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linux/drivers/clk/samsung/clk.c

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treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 Based on 2 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Enrico Weigelt <info@metux.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-04 11:11:33 +03:00
// SPDX-License-Identifier: GPL-2.0-only
clk: samsung: add common clock framework helper functions for Samsung platforms All Samsung platforms include different types of clock including fixed-rate, mux, divider and gate clock types. There are typically hundreds of such clocks on each of the Samsung platforms. To enable Samsung platforms to register these clocks using the common clock framework, a bunch of utility functions are introduced here which simplify the clock registration process. The clocks are usually statically instantiated and registered with common clock framework. Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Tested-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-03-09 12:02:44 +04:00
/*
* Copyright (c) 2013 Samsung Electronics Co., Ltd.
* Copyright (c) 2013 Linaro Ltd.
* Author: Thomas Abraham <thomas.ab@samsung.com>
*
* This file includes utility functions to register clocks to common
* clock framework for Samsung platforms.
*/
clk: samsung: Properly include clk.h and clkdev.h Clock provider drivers generally shouldn't include clk.h because it's the consumer API. Only include clk.h in files that are using it. The clkdev.h header isn't always used either, so remove it and add in slab.h where files were relying on it to include slab for them. Cc: Chanwoo Choi <cw00.choi@samsung.com> Cc: Sylwester Nawrocki <s.nawrocki@samsung.com> Cc: Krzysztof Kozlowski <k.kozlowski@samsung.com> Cc: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-06-20 01:00:46 +03:00
#include <linux/slab.h>
#include <linux/clkdev.h>
#include <linux/clk.h>
#include <linux/clk-provider.h>
clk: Remove io.h from clk-provider.h Now that we've gotten rid of clk_readl() we can remove io.h from the clk-provider header and push out the io.h include to any code that isn't already including the io.h header but using things like readl/writel, etc. Found with this grep: git grep -l clk-provider.h | grep '.c$' | xargs git grep -L 'linux/io.h' | \ xargs git grep -l \ -e '\<__iowrite32_copy\>' --or \ -e '\<__ioread32_copy\>' --or \ -e '\<__iowrite64_copy\>' --or \ -e '\<ioremap_page_range\>' --or \ -e '\<ioremap_huge_init\>' --or \ -e '\<arch_ioremap_pud_supported\>' --or \ -e '\<arch_ioremap_pmd_supported\>' --or \ -e '\<devm_ioport_map\>' --or \ -e '\<devm_ioport_unmap\>' --or \ -e '\<IOMEM_ERR_PTR\>' --or \ -e '\<devm_ioremap\>' --or \ -e '\<devm_ioremap_nocache\>' --or \ -e '\<devm_ioremap_wc\>' --or \ -e '\<devm_iounmap\>' --or \ -e '\<devm_ioremap_release\>' --or \ -e '\<devm_memremap\>' --or \ -e '\<devm_memunmap\>' --or \ -e '\<__devm_memremap_pages\>' --or \ -e '\<pci_remap_cfgspace\>' --or \ -e '\<arch_has_dev_port\>' --or \ -e '\<arch_phys_wc_add\>' --or \ -e '\<arch_phys_wc_del\>' --or \ -e '\<memremap\>' --or \ -e '\<memunmap\>' --or \ -e '\<arch_io_reserve_memtype_wc\>' --or \ -e '\<arch_io_free_memtype_wc\>' --or \ -e '\<__io_aw\>' --or \ -e '\<__io_pbw\>' --or \ -e '\<__io_paw\>' --or \ -e '\<__io_pbr\>' --or \ -e '\<__io_par\>' --or \ -e '\<__raw_readb\>' --or \ -e '\<__raw_readw\>' --or \ -e '\<__raw_readl\>' --or \ -e '\<__raw_readq\>' --or \ -e '\<__raw_writeb\>' --or \ -e '\<__raw_writew\>' --or \ -e '\<__raw_writel\>' --or \ -e '\<__raw_writeq\>' --or \ -e '\<readb\>' --or \ -e '\<readw\>' --or \ -e '\<readl\>' --or \ -e '\<readq\>' --or \ -e '\<writeb\>' --or \ -e '\<writew\>' --or \ -e '\<writel\>' --or \ -e '\<writeq\>' --or \ -e '\<readb_relaxed\>' --or \ -e '\<readw_relaxed\>' --or \ -e '\<readl_relaxed\>' --or \ -e '\<readq_relaxed\>' --or \ -e '\<writeb_relaxed\>' --or \ -e '\<writew_relaxed\>' --or \ -e '\<writel_relaxed\>' --or \ -e '\<writeq_relaxed\>' --or \ -e '\<readsb\>' --or \ -e '\<readsw\>' --or \ -e '\<readsl\>' --or \ -e '\<readsq\>' --or \ -e '\<writesb\>' --or \ -e '\<writesw\>' --or \ -e '\<writesl\>' --or \ -e '\<writesq\>' --or \ -e '\<inb\>' --or \ -e '\<inw\>' --or \ -e '\<inl\>' --or \ -e '\<outb\>' --or \ -e '\<outw\>' --or \ -e '\<outl\>' --or \ -e '\<inb_p\>' --or \ -e '\<inw_p\>' --or \ -e '\<inl_p\>' --or \ -e '\<outb_p\>' --or \ -e '\<outw_p\>' --or \ -e '\<outl_p\>' --or \ -e '\<insb\>' --or \ -e '\<insw\>' --or \ -e '\<insl\>' --or \ -e '\<outsb\>' --or \ -e '\<outsw\>' --or \ -e '\<outsl\>' --or \ -e '\<insb_p\>' --or \ -e '\<insw_p\>' --or \ -e '\<insl_p\>' --or \ -e '\<outsb_p\>' --or \ -e '\<outsw_p\>' --or \ -e '\<outsl_p\>' --or \ -e '\<ioread8\>' --or \ -e '\<ioread16\>' --or \ -e '\<ioread32\>' --or \ -e '\<ioread64\>' --or \ -e '\<iowrite8\>' --or \ -e '\<iowrite16\>' --or \ -e '\<iowrite32\>' --or \ -e '\<iowrite64\>' --or \ -e '\<ioread16be\>' --or \ -e '\<ioread32be\>' --or \ -e '\<ioread64be\>' --or \ -e '\<iowrite16be\>' --or \ -e '\<iowrite32be\>' --or \ -e '\<iowrite64be\>' --or \ -e '\<ioread8_rep\>' --or \ -e '\<ioread16_rep\>' --or \ -e '\<ioread32_rep\>' --or \ -e '\<ioread64_rep\>' --or \ -e '\<iowrite8_rep\>' --or \ -e '\<iowrite16_rep\>' --or \ -e '\<iowrite32_rep\>' --or \ -e '\<iowrite64_rep\>' --or \ -e '\<__io_virt\>' --or \ -e '\<pci_iounmap\>' --or \ -e '\<virt_to_phys\>' --or \ -e '\<phys_to_virt\>' --or \ -e '\<ioremap_uc\>' --or \ -e '\<ioremap\>' --or \ -e '\<__ioremap\>' --or \ -e '\<iounmap\>' --or \ -e '\<ioremap\>' --or \ -e '\<ioremap_nocache\>' --or \ -e '\<ioremap_uc\>' --or \ -e '\<ioremap_wc\>' --or \ -e '\<ioremap_wc\>' --or \ -e '\<ioremap_wt\>' --or \ -e '\<ioport_map\>' --or \ -e '\<ioport_unmap\>' --or \ -e '\<ioport_map\>' --or \ -e '\<ioport_unmap\>' --or \ -e '\<xlate_dev_kmem_ptr\>' --or \ -e '\<xlate_dev_mem_ptr\>' --or \ -e '\<unxlate_dev_mem_ptr\>' --or \ -e '\<virt_to_bus\>' --or \ -e '\<bus_to_virt\>' --or \ -e '\<memset_io\>' --or \ -e '\<memcpy_fromio\>' --or \ -e '\<memcpy_toio\>' I also reordered a couple includes when they weren't alphabetical and removed clk.h from kona, replacing it with clk-provider.h because that driver doesn't use clk consumer APIs. Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Cc: Chen-Yu Tsai <wens@csie.org> Acked-by: Maxime Ripard <maxime.ripard@bootlin.com> Acked-by: Tero Kristo <t-kristo@ti.com> Acked-by: Sekhar Nori <nsekhar@ti.com> Cc: Krzysztof Kozlowski <krzk@kernel.org> Acked-by: Mark Brown <broonie@kernel.org> Cc: Chris Zankel <chris@zankel.net> Acked-by: Max Filippov <jcmvbkbc@gmail.com> Acked-by: John Crispin <john@phrozen.org> Acked-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2019-04-19 01:20:22 +03:00
#include <linux/io.h>
clk: samsung: remove unnecessary inclusion of header files from clk.h Let's remove unnecessary include of header files from clk.h and add required one in clk.c Signed-off-by: Pankaj Dubey <pankaj.dubey@samsung.com> [s.nawrocki@samsung.com: dropped removal of '#include <linux/syscore_ops.h>'] Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2014-09-29 11:47:48 +04:00
#include <linux/of_address.h>
clk: samsung: add common clock framework helper functions for Samsung platforms All Samsung platforms include different types of clock including fixed-rate, mux, divider and gate clock types. There are typically hundreds of such clocks on each of the Samsung platforms. To enable Samsung platforms to register these clocks using the common clock framework, a bunch of utility functions are introduced here which simplify the clock registration process. The clocks are usually statically instantiated and registered with common clock framework. Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Tested-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-03-09 12:02:44 +04:00
#include <linux/syscore_ops.h>
clk: samsung: remove unnecessary inclusion of header files from clk.h Let's remove unnecessary include of header files from clk.h and add required one in clk.c Signed-off-by: Pankaj Dubey <pankaj.dubey@samsung.com> [s.nawrocki@samsung.com: dropped removal of '#include <linux/syscore_ops.h>'] Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2014-09-29 11:47:48 +04:00
clk: samsung: add common clock framework helper functions for Samsung platforms All Samsung platforms include different types of clock including fixed-rate, mux, divider and gate clock types. There are typically hundreds of such clocks on each of the Samsung platforms. To enable Samsung platforms to register these clocks using the common clock framework, a bunch of utility functions are introduced here which simplify the clock registration process. The clocks are usually statically instantiated and registered with common clock framework. Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Tested-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-03-09 12:02:44 +04:00
#include "clk.h"
clk: samsung: Factor out the common code to clk.c While adding clock support for Exynos5260, the infrastructure to register multiple clock controllers was introduced. Factor out the support for registering multiple clock controller from Exynos5260 clock code to common samsung clock code so that it can be used by other Exynos SoC which have multiple clock controllers. Signed-off-by: Naveen Krishna Ch <naveenkrishna.ch@gmail.com> Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com> Reviewed-by: Thomas Abraham <thomas.ab@samsung.com> Tested-by: Thomas Abraham <thomas.ab@samsung.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2014-09-22 08:47:02 +04:00
static LIST_HEAD(clock_reg_cache_list);
clk: samsung: Provide common helpers for register save/restore As suspend/resume handlers are being moved to SoC specific code, due to differencies in suspend/resume handling of particular SoCs, to minimize code duplication this patch provides common register save/restore helpers that save/restore given list of registers of clock controller. Signed-off-by: Tomasz Figa <t.figa@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Heiko Stuebner <heiko@sntech.de> Reviewed-by: Thomas Abraham <thomas.ab@samsung.com> Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2014-02-14 03:16:00 +04:00
void samsung_clk_save(void __iomem *base,
struct samsung_clk_reg_dump *rd,
unsigned int num_regs)
{
for (; num_regs > 0; --num_regs, ++rd)
rd->value = readl(base + rd->offset);
}
void samsung_clk_restore(void __iomem *base,
const struct samsung_clk_reg_dump *rd,
unsigned int num_regs)
{
for (; num_regs > 0; --num_regs, ++rd)
writel(rd->value, base + rd->offset);
}
clk: samsung: exynos5250: Move suspend/resume handling to SoC driver Since there are multiple differences in how suspend/resume of particular Exynos SoCs must be handled, SoC driver is better place for suspend/resume handlers and so this patch moves them. Signed-off-by: Tomasz Figa <t.figa@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Reviewed-by: Thomas Abraham <thomas.ab@samsung.com> Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2014-02-14 03:16:00 +04:00
struct samsung_clk_reg_dump *samsung_clk_alloc_reg_dump(
const unsigned long *rdump,
unsigned long nr_rdump)
clk: samsung: Provide common helpers for register save/restore As suspend/resume handlers are being moved to SoC specific code, due to differencies in suspend/resume handling of particular SoCs, to minimize code duplication this patch provides common register save/restore helpers that save/restore given list of registers of clock controller. Signed-off-by: Tomasz Figa <t.figa@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Heiko Stuebner <heiko@sntech.de> Reviewed-by: Thomas Abraham <thomas.ab@samsung.com> Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2014-02-14 03:16:00 +04:00
{
struct samsung_clk_reg_dump *rd;
unsigned int i;
rd = kcalloc(nr_rdump, sizeof(*rd), GFP_KERNEL);
if (!rd)
return NULL;
for (i = 0; i < nr_rdump; ++i)
rd[i].offset = rdump[i];
return rd;
}
clk: samsung: add common clock framework helper functions for Samsung platforms All Samsung platforms include different types of clock including fixed-rate, mux, divider and gate clock types. There are typically hundreds of such clocks on each of the Samsung platforms. To enable Samsung platforms to register these clocks using the common clock framework, a bunch of utility functions are introduced here which simplify the clock registration process. The clocks are usually statically instantiated and registered with common clock framework. Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Tested-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-03-09 12:02:44 +04:00
/* setup the essentials required to support clock lookup using ccf */
clk/samsung: add support for multiple clock providers Samsung CCF helper functions do not provide support to register multiple Clock Providers for a given SoC. Due to this limitation, SoC platforms are not able to use these helpers for registering multiple clock providers and are forced to bypass this layer. This layer is modified accordingly to enable the support for multiple clock providers. Clock file for exynos4, exynos5250, exynos5420, exynos5440, S3c64xx, S3c24xx are also modified as per changed helper functions. Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com> [t.figa: Modified s3c2410 clock driver as well] Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-03-12 18:56:44 +04:00
struct samsung_clk_provider *__init samsung_clk_init(struct device_node *np,
void __iomem *base, unsigned long nr_clks)
clk: samsung: add common clock framework helper functions for Samsung platforms All Samsung platforms include different types of clock including fixed-rate, mux, divider and gate clock types. There are typically hundreds of such clocks on each of the Samsung platforms. To enable Samsung platforms to register these clocks using the common clock framework, a bunch of utility functions are introduced here which simplify the clock registration process. The clocks are usually statically instantiated and registered with common clock framework. Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Tested-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-03-09 12:02:44 +04:00
{
clk/samsung: add support for multiple clock providers Samsung CCF helper functions do not provide support to register multiple Clock Providers for a given SoC. Due to this limitation, SoC platforms are not able to use these helpers for registering multiple clock providers and are forced to bypass this layer. This layer is modified accordingly to enable the support for multiple clock providers. Clock file for exynos4, exynos5250, exynos5420, exynos5440, S3c64xx, S3c24xx are also modified as per changed helper functions. Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com> [t.figa: Modified s3c2410 clock driver as well] Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-03-12 18:56:44 +04:00
struct samsung_clk_provider *ctx;
clk: samsung: Initialize clock table with error pointers Before this patch, the driver was simply zeroing the clock table, which is incorrect, because invalid clock numbers returned NULL instead of error pointers. This patch fixes this by changing the driver to initialize the array with PTR_ERR(-ENOENT). Signed-off-by: Tomasz Figa <t.figa@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
2014-02-06 22:33:11 +04:00
int i;
drivers/clk: convert VL struct to struct_size There are a few manually-calculated variable-length struct allocations left, this converts them to use struct_size. Found with the following git grep command git grep -A1 'kzalloc.*sizeof[^_].*+' Signed-off-by: Stephen Kitt <steve@sk2.org> Link: https://lkml.kernel.org/r/20190927185110.29897-1-steve@sk2.org Acked-by: Gustavo A. R. Silva <gustavo@embeddedor.com> [sboyd@kernel.org: Add grep command] Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2019-09-27 21:51:10 +03:00
ctx = kzalloc(struct_size(ctx, clk_data.hws, nr_clks), GFP_KERNEL);
clk/samsung: add support for multiple clock providers Samsung CCF helper functions do not provide support to register multiple Clock Providers for a given SoC. Due to this limitation, SoC platforms are not able to use these helpers for registering multiple clock providers and are forced to bypass this layer. This layer is modified accordingly to enable the support for multiple clock providers. Clock file for exynos4, exynos5250, exynos5420, exynos5440, S3c64xx, S3c24xx are also modified as per changed helper functions. Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com> [t.figa: Modified s3c2410 clock driver as well] Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-03-12 18:56:44 +04:00
if (!ctx)
panic("could not allocate clock provider context.\n");
clk: samsung: add common clock framework helper functions for Samsung platforms All Samsung platforms include different types of clock including fixed-rate, mux, divider and gate clock types. There are typically hundreds of such clocks on each of the Samsung platforms. To enable Samsung platforms to register these clocks using the common clock framework, a bunch of utility functions are introduced here which simplify the clock registration process. The clocks are usually statically instantiated and registered with common clock framework. Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Tested-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-03-09 12:02:44 +04:00
clk: samsung: Initialize clock table with error pointers Before this patch, the driver was simply zeroing the clock table, which is incorrect, because invalid clock numbers returned NULL instead of error pointers. This patch fixes this by changing the driver to initialize the array with PTR_ERR(-ENOENT). Signed-off-by: Tomasz Figa <t.figa@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
2014-02-06 22:33:11 +04:00
for (i = 0; i < nr_clks; ++i)
clk: samsung: Convert common drivers to the new clk_hw API Clock providers should use the new struct clk_hw based API, so convert Samsung clock providers and their helper functions to the new approach. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2017-04-24 09:42:20 +03:00
ctx->clk_data.hws[i] = ERR_PTR(-ENOENT);
clk: samsung: Initialize clock table with error pointers Before this patch, the driver was simply zeroing the clock table, which is incorrect, because invalid clock numbers returned NULL instead of error pointers. This patch fixes this by changing the driver to initialize the array with PTR_ERR(-ENOENT). Signed-off-by: Tomasz Figa <t.figa@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
2014-02-06 22:33:11 +04:00
clk/samsung: add support for multiple clock providers Samsung CCF helper functions do not provide support to register multiple Clock Providers for a given SoC. Due to this limitation, SoC platforms are not able to use these helpers for registering multiple clock providers and are forced to bypass this layer. This layer is modified accordingly to enable the support for multiple clock providers. Clock file for exynos4, exynos5250, exynos5420, exynos5440, S3c64xx, S3c24xx are also modified as per changed helper functions. Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com> [t.figa: Modified s3c2410 clock driver as well] Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-03-12 18:56:44 +04:00
ctx->reg_base = base;
clk: samsung: Convert common drivers to the new clk_hw API Clock providers should use the new struct clk_hw based API, so convert Samsung clock providers and their helper functions to the new approach. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2017-04-24 09:42:20 +03:00
ctx->clk_data.num = nr_clks;
clk/samsung: add support for multiple clock providers Samsung CCF helper functions do not provide support to register multiple Clock Providers for a given SoC. Due to this limitation, SoC platforms are not able to use these helpers for registering multiple clock providers and are forced to bypass this layer. This layer is modified accordingly to enable the support for multiple clock providers. Clock file for exynos4, exynos5250, exynos5420, exynos5440, S3c64xx, S3c24xx are also modified as per changed helper functions. Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com> [t.figa: Modified s3c2410 clock driver as well] Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-03-12 18:56:44 +04:00
spin_lock_init(&ctx->lock);
return ctx;
clk: samsung: Register clk provider only after registering its all clocks Ensure the clock provider is not registered until after all its related clocks were created and are ready to use. Currently there are races possible and any (of_)clk_get() call right after a clock provider's clk_init_cb callback call may fail. Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-06-18 19:46:52 +04:00
}
void __init samsung_clk_of_add_provider(struct device_node *np,
struct samsung_clk_provider *ctx)
{
if (np) {
clk: samsung: Convert common drivers to the new clk_hw API Clock providers should use the new struct clk_hw based API, so convert Samsung clock providers and their helper functions to the new approach. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2017-04-24 09:42:20 +03:00
if (of_clk_add_hw_provider(np, of_clk_hw_onecell_get,
clk: samsung: Register clk provider only after registering its all clocks Ensure the clock provider is not registered until after all its related clocks were created and are ready to use. Currently there are races possible and any (of_)clk_get() call right after a clock provider's clk_init_cb callback call may fail. Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-06-18 19:46:52 +04:00
&ctx->clk_data))
panic("could not register clk provider\n");
}
clk: samsung: add common clock framework helper functions for Samsung platforms All Samsung platforms include different types of clock including fixed-rate, mux, divider and gate clock types. There are typically hundreds of such clocks on each of the Samsung platforms. To enable Samsung platforms to register these clocks using the common clock framework, a bunch of utility functions are introduced here which simplify the clock registration process. The clocks are usually statically instantiated and registered with common clock framework. Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Tested-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-03-09 12:02:44 +04:00
}
/* add a clock instance to the clock lookup table used for dt based lookup */
clk: samsung: Convert common drivers to the new clk_hw API Clock providers should use the new struct clk_hw based API, so convert Samsung clock providers and their helper functions to the new approach. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2017-04-24 09:42:20 +03:00
void samsung_clk_add_lookup(struct samsung_clk_provider *ctx,
struct clk_hw *clk_hw, unsigned int id)
clk: samsung: add common clock framework helper functions for Samsung platforms All Samsung platforms include different types of clock including fixed-rate, mux, divider and gate clock types. There are typically hundreds of such clocks on each of the Samsung platforms. To enable Samsung platforms to register these clocks using the common clock framework, a bunch of utility functions are introduced here which simplify the clock registration process. The clocks are usually statically instantiated and registered with common clock framework. Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Tested-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-03-09 12:02:44 +04:00
{
clk: samsung: Convert common drivers to the new clk_hw API Clock providers should use the new struct clk_hw based API, so convert Samsung clock providers and their helper functions to the new approach. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2017-04-24 09:42:20 +03:00
if (id)
ctx->clk_data.hws[id] = clk_hw;
clk: samsung: add common clock framework helper functions for Samsung platforms All Samsung platforms include different types of clock including fixed-rate, mux, divider and gate clock types. There are typically hundreds of such clocks on each of the Samsung platforms. To enable Samsung platforms to register these clocks using the common clock framework, a bunch of utility functions are introduced here which simplify the clock registration process. The clocks are usually statically instantiated and registered with common clock framework. Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Tested-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-03-09 12:02:44 +04:00
}
clk: samsung: add infrastructure to add separate aliases The current code adds aliases, if necessary, directly when adding the clock, limiting the number of possible aliases to one. Some platforms need more than one alias, like the hsmmc pclocks on s3c2416 which need a "hsmmc" and "mmc_busclk.0" alias for the s3c- sdhci driver. Therefore add the possibility to separately add clock aliases for previously created clocks. Signed-off-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-03-18 08:43:56 +04:00
/* register a list of aliases */
clk/samsung: add support for multiple clock providers Samsung CCF helper functions do not provide support to register multiple Clock Providers for a given SoC. Due to this limitation, SoC platforms are not able to use these helpers for registering multiple clock providers and are forced to bypass this layer. This layer is modified accordingly to enable the support for multiple clock providers. Clock file for exynos4, exynos5250, exynos5420, exynos5440, S3c64xx, S3c24xx are also modified as per changed helper functions. Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com> [t.figa: Modified s3c2410 clock driver as well] Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-03-12 18:56:44 +04:00
void __init samsung_clk_register_alias(struct samsung_clk_provider *ctx,
clk: make several parent names const Since commit 2893c379461a ("clk: make strings in parent name arrays const") the name of parent clocks can be const. So add more const in several clock drivers. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Acked-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-05-28 11:45:51 +03:00
const struct samsung_clock_alias *list,
clk/samsung: add support for multiple clock providers Samsung CCF helper functions do not provide support to register multiple Clock Providers for a given SoC. Due to this limitation, SoC platforms are not able to use these helpers for registering multiple clock providers and are forced to bypass this layer. This layer is modified accordingly to enable the support for multiple clock providers. Clock file for exynos4, exynos5250, exynos5420, exynos5440, S3c64xx, S3c24xx are also modified as per changed helper functions. Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com> [t.figa: Modified s3c2410 clock driver as well] Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-03-12 18:56:44 +04:00
unsigned int nr_clk)
clk: samsung: add infrastructure to add separate aliases The current code adds aliases, if necessary, directly when adding the clock, limiting the number of possible aliases to one. Some platforms need more than one alias, like the hsmmc pclocks on s3c2416 which need a "hsmmc" and "mmc_busclk.0" alias for the s3c- sdhci driver. Therefore add the possibility to separately add clock aliases for previously created clocks. Signed-off-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-03-18 08:43:56 +04:00
{
clk: samsung: Convert common drivers to the new clk_hw API Clock providers should use the new struct clk_hw based API, so convert Samsung clock providers and their helper functions to the new approach. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2017-04-24 09:42:20 +03:00
struct clk_hw *clk_hw;
clk: samsung: add infrastructure to add separate aliases The current code adds aliases, if necessary, directly when adding the clock, limiting the number of possible aliases to one. Some platforms need more than one alias, like the hsmmc pclocks on s3c2416 which need a "hsmmc" and "mmc_busclk.0" alias for the s3c- sdhci driver. Therefore add the possibility to separately add clock aliases for previously created clocks. Signed-off-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-03-18 08:43:56 +04:00
unsigned int idx, ret;
for (idx = 0; idx < nr_clk; idx++, list++) {
if (!list->id) {
pr_err("%s: clock id missing for index %d\n", __func__,
idx);
continue;
}
clk: samsung: Convert common drivers to the new clk_hw API Clock providers should use the new struct clk_hw based API, so convert Samsung clock providers and their helper functions to the new approach. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2017-04-24 09:42:20 +03:00
clk_hw = ctx->clk_data.hws[list->id];
if (!clk_hw) {
clk: samsung: add infrastructure to add separate aliases The current code adds aliases, if necessary, directly when adding the clock, limiting the number of possible aliases to one. Some platforms need more than one alias, like the hsmmc pclocks on s3c2416 which need a "hsmmc" and "mmc_busclk.0" alias for the s3c- sdhci driver. Therefore add the possibility to separately add clock aliases for previously created clocks. Signed-off-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-03-18 08:43:56 +04:00
pr_err("%s: failed to find clock %d\n", __func__,
list->id);
continue;
}
clk: samsung: Convert common drivers to the new clk_hw API Clock providers should use the new struct clk_hw based API, so convert Samsung clock providers and their helper functions to the new approach. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2017-04-24 09:42:20 +03:00
ret = clk_hw_register_clkdev(clk_hw, list->alias,
list->dev_name);
clk: samsung: add infrastructure to add separate aliases The current code adds aliases, if necessary, directly when adding the clock, limiting the number of possible aliases to one. Some platforms need more than one alias, like the hsmmc pclocks on s3c2416 which need a "hsmmc" and "mmc_busclk.0" alias for the s3c- sdhci driver. Therefore add the possibility to separately add clock aliases for previously created clocks. Signed-off-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-03-18 08:43:56 +04:00
if (ret)
pr_err("%s: failed to register lookup %s\n",
__func__, list->alias);
}
}
clk: samsung: add common clock framework helper functions for Samsung platforms All Samsung platforms include different types of clock including fixed-rate, mux, divider and gate clock types. There are typically hundreds of such clocks on each of the Samsung platforms. To enable Samsung platforms to register these clocks using the common clock framework, a bunch of utility functions are introduced here which simplify the clock registration process. The clocks are usually statically instantiated and registered with common clock framework. Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Tested-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-03-09 12:02:44 +04:00
/* register a list of fixed clocks */
clk/samsung: add support for multiple clock providers Samsung CCF helper functions do not provide support to register multiple Clock Providers for a given SoC. Due to this limitation, SoC platforms are not able to use these helpers for registering multiple clock providers and are forced to bypass this layer. This layer is modified accordingly to enable the support for multiple clock providers. Clock file for exynos4, exynos5250, exynos5420, exynos5440, S3c64xx, S3c24xx are also modified as per changed helper functions. Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com> [t.figa: Modified s3c2410 clock driver as well] Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-03-12 18:56:44 +04:00
void __init samsung_clk_register_fixed_rate(struct samsung_clk_provider *ctx,
clk: make several parent names const Since commit 2893c379461a ("clk: make strings in parent name arrays const") the name of parent clocks can be const. So add more const in several clock drivers. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Acked-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-05-28 11:45:51 +03:00
const struct samsung_fixed_rate_clock *list,
unsigned int nr_clk)
clk: samsung: add common clock framework helper functions for Samsung platforms All Samsung platforms include different types of clock including fixed-rate, mux, divider and gate clock types. There are typically hundreds of such clocks on each of the Samsung platforms. To enable Samsung platforms to register these clocks using the common clock framework, a bunch of utility functions are introduced here which simplify the clock registration process. The clocks are usually statically instantiated and registered with common clock framework. Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Tested-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-03-09 12:02:44 +04:00
{
clk: samsung: Convert common drivers to the new clk_hw API Clock providers should use the new struct clk_hw based API, so convert Samsung clock providers and their helper functions to the new approach. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2017-04-24 09:42:20 +03:00
struct clk_hw *clk_hw;
clk: samsung: add common clock framework helper functions for Samsung platforms All Samsung platforms include different types of clock including fixed-rate, mux, divider and gate clock types. There are typically hundreds of such clocks on each of the Samsung platforms. To enable Samsung platforms to register these clocks using the common clock framework, a bunch of utility functions are introduced here which simplify the clock registration process. The clocks are usually statically instantiated and registered with common clock framework. Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Tested-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-03-09 12:02:44 +04:00
unsigned int idx, ret;
for (idx = 0; idx < nr_clk; idx++, list++) {
clk: samsung: Add support for runtime PM This patch adds struct device pointer to samsung_clk_provider and forwarding it to clk_register_* functions, so drivers can register clocks, which use runtime pm feature. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com> Tested-by: Chanwoo Choi <cw00.choi@samsung.com> Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Michael Turquette <mturquette@baylibre.com> Link: lkml.kernel.org/r/1503302703-13801-3-git-send-email-m.szyprowski@samsung.com
2017-08-21 11:05:00 +03:00
clk_hw = clk_hw_register_fixed_rate(ctx->dev, list->name,
clk: samsung: add common clock framework helper functions for Samsung platforms All Samsung platforms include different types of clock including fixed-rate, mux, divider and gate clock types. There are typically hundreds of such clocks on each of the Samsung platforms. To enable Samsung platforms to register these clocks using the common clock framework, a bunch of utility functions are introduced here which simplify the clock registration process. The clocks are usually statically instantiated and registered with common clock framework. Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Tested-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-03-09 12:02:44 +04:00
list->parent_name, list->flags, list->fixed_rate);
clk: samsung: Convert common drivers to the new clk_hw API Clock providers should use the new struct clk_hw based API, so convert Samsung clock providers and their helper functions to the new approach. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2017-04-24 09:42:20 +03:00
if (IS_ERR(clk_hw)) {
clk: samsung: add common clock framework helper functions for Samsung platforms All Samsung platforms include different types of clock including fixed-rate, mux, divider and gate clock types. There are typically hundreds of such clocks on each of the Samsung platforms. To enable Samsung platforms to register these clocks using the common clock framework, a bunch of utility functions are introduced here which simplify the clock registration process. The clocks are usually statically instantiated and registered with common clock framework. Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Tested-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-03-09 12:02:44 +04:00
pr_err("%s: failed to register clock %s\n", __func__,
list->name);
continue;
}
clk: samsung: Convert common drivers to the new clk_hw API Clock providers should use the new struct clk_hw based API, so convert Samsung clock providers and their helper functions to the new approach. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2017-04-24 09:42:20 +03:00
samsung_clk_add_lookup(ctx, clk_hw, list->id);
clk: samsung: add common clock framework helper functions for Samsung platforms All Samsung platforms include different types of clock including fixed-rate, mux, divider and gate clock types. There are typically hundreds of such clocks on each of the Samsung platforms. To enable Samsung platforms to register these clocks using the common clock framework, a bunch of utility functions are introduced here which simplify the clock registration process. The clocks are usually statically instantiated and registered with common clock framework. Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Tested-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-03-09 12:02:44 +04:00
/*
* Unconditionally add a clock lookup for the fixed rate clocks.
* There are not many of these on any of Samsung platforms.
*/
clk: samsung: Convert common drivers to the new clk_hw API Clock providers should use the new struct clk_hw based API, so convert Samsung clock providers and their helper functions to the new approach. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2017-04-24 09:42:20 +03:00
ret = clk_hw_register_clkdev(clk_hw, list->name, NULL);
clk: samsung: add common clock framework helper functions for Samsung platforms All Samsung platforms include different types of clock including fixed-rate, mux, divider and gate clock types. There are typically hundreds of such clocks on each of the Samsung platforms. To enable Samsung platforms to register these clocks using the common clock framework, a bunch of utility functions are introduced here which simplify the clock registration process. The clocks are usually statically instantiated and registered with common clock framework. Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Tested-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-03-09 12:02:44 +04:00
if (ret)
pr_err("%s: failed to register clock lookup for %s",
__func__, list->name);
}
}
/* register a list of fixed factor clocks */
clk/samsung: add support for multiple clock providers Samsung CCF helper functions do not provide support to register multiple Clock Providers for a given SoC. Due to this limitation, SoC platforms are not able to use these helpers for registering multiple clock providers and are forced to bypass this layer. This layer is modified accordingly to enable the support for multiple clock providers. Clock file for exynos4, exynos5250, exynos5420, exynos5440, S3c64xx, S3c24xx are also modified as per changed helper functions. Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com> [t.figa: Modified s3c2410 clock driver as well] Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-03-12 18:56:44 +04:00
void __init samsung_clk_register_fixed_factor(struct samsung_clk_provider *ctx,
clk: make several parent names const Since commit 2893c379461a ("clk: make strings in parent name arrays const") the name of parent clocks can be const. So add more const in several clock drivers. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Acked-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-05-28 11:45:51 +03:00
const struct samsung_fixed_factor_clock *list, unsigned int nr_clk)
clk: samsung: add common clock framework helper functions for Samsung platforms All Samsung platforms include different types of clock including fixed-rate, mux, divider and gate clock types. There are typically hundreds of such clocks on each of the Samsung platforms. To enable Samsung platforms to register these clocks using the common clock framework, a bunch of utility functions are introduced here which simplify the clock registration process. The clocks are usually statically instantiated and registered with common clock framework. Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Tested-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-03-09 12:02:44 +04:00
{
clk: samsung: Convert common drivers to the new clk_hw API Clock providers should use the new struct clk_hw based API, so convert Samsung clock providers and their helper functions to the new approach. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2017-04-24 09:42:20 +03:00
struct clk_hw *clk_hw;
clk: samsung: add common clock framework helper functions for Samsung platforms All Samsung platforms include different types of clock including fixed-rate, mux, divider and gate clock types. There are typically hundreds of such clocks on each of the Samsung platforms. To enable Samsung platforms to register these clocks using the common clock framework, a bunch of utility functions are introduced here which simplify the clock registration process. The clocks are usually statically instantiated and registered with common clock framework. Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Tested-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-03-09 12:02:44 +04:00
unsigned int idx;
for (idx = 0; idx < nr_clk; idx++, list++) {
clk: samsung: Add support for runtime PM This patch adds struct device pointer to samsung_clk_provider and forwarding it to clk_register_* functions, so drivers can register clocks, which use runtime pm feature. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com> Tested-by: Chanwoo Choi <cw00.choi@samsung.com> Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Michael Turquette <mturquette@baylibre.com> Link: lkml.kernel.org/r/1503302703-13801-3-git-send-email-m.szyprowski@samsung.com
2017-08-21 11:05:00 +03:00
clk_hw = clk_hw_register_fixed_factor(ctx->dev, list->name,
clk: samsung: add common clock framework helper functions for Samsung platforms All Samsung platforms include different types of clock including fixed-rate, mux, divider and gate clock types. There are typically hundreds of such clocks on each of the Samsung platforms. To enable Samsung platforms to register these clocks using the common clock framework, a bunch of utility functions are introduced here which simplify the clock registration process. The clocks are usually statically instantiated and registered with common clock framework. Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Tested-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-03-09 12:02:44 +04:00
list->parent_name, list->flags, list->mult, list->div);
clk: samsung: Convert common drivers to the new clk_hw API Clock providers should use the new struct clk_hw based API, so convert Samsung clock providers and their helper functions to the new approach. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2017-04-24 09:42:20 +03:00
if (IS_ERR(clk_hw)) {
clk: samsung: add common clock framework helper functions for Samsung platforms All Samsung platforms include different types of clock including fixed-rate, mux, divider and gate clock types. There are typically hundreds of such clocks on each of the Samsung platforms. To enable Samsung platforms to register these clocks using the common clock framework, a bunch of utility functions are introduced here which simplify the clock registration process. The clocks are usually statically instantiated and registered with common clock framework. Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Tested-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-03-09 12:02:44 +04:00
pr_err("%s: failed to register clock %s\n", __func__,
list->name);
continue;
}
clk: samsung: Convert common drivers to the new clk_hw API Clock providers should use the new struct clk_hw based API, so convert Samsung clock providers and their helper functions to the new approach. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2017-04-24 09:42:20 +03:00
samsung_clk_add_lookup(ctx, clk_hw, list->id);
clk: samsung: add common clock framework helper functions for Samsung platforms All Samsung platforms include different types of clock including fixed-rate, mux, divider and gate clock types. There are typically hundreds of such clocks on each of the Samsung platforms. To enable Samsung platforms to register these clocks using the common clock framework, a bunch of utility functions are introduced here which simplify the clock registration process. The clocks are usually statically instantiated and registered with common clock framework. Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Tested-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-03-09 12:02:44 +04:00
}
}
/* register a list of mux clocks */
clk/samsung: add support for multiple clock providers Samsung CCF helper functions do not provide support to register multiple Clock Providers for a given SoC. Due to this limitation, SoC platforms are not able to use these helpers for registering multiple clock providers and are forced to bypass this layer. This layer is modified accordingly to enable the support for multiple clock providers. Clock file for exynos4, exynos5250, exynos5420, exynos5440, S3c64xx, S3c24xx are also modified as per changed helper functions. Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com> [t.figa: Modified s3c2410 clock driver as well] Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-03-12 18:56:44 +04:00
void __init samsung_clk_register_mux(struct samsung_clk_provider *ctx,
clk: make several parent names const Since commit 2893c379461a ("clk: make strings in parent name arrays const") the name of parent clocks can be const. So add more const in several clock drivers. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Acked-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-05-28 11:45:51 +03:00
const struct samsung_mux_clock *list,
clk/samsung: add support for multiple clock providers Samsung CCF helper functions do not provide support to register multiple Clock Providers for a given SoC. Due to this limitation, SoC platforms are not able to use these helpers for registering multiple clock providers and are forced to bypass this layer. This layer is modified accordingly to enable the support for multiple clock providers. Clock file for exynos4, exynos5250, exynos5420, exynos5440, S3c64xx, S3c24xx are also modified as per changed helper functions. Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com> [t.figa: Modified s3c2410 clock driver as well] Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-03-12 18:56:44 +04:00
unsigned int nr_clk)
clk: samsung: add common clock framework helper functions for Samsung platforms All Samsung platforms include different types of clock including fixed-rate, mux, divider and gate clock types. There are typically hundreds of such clocks on each of the Samsung platforms. To enable Samsung platforms to register these clocks using the common clock framework, a bunch of utility functions are introduced here which simplify the clock registration process. The clocks are usually statically instantiated and registered with common clock framework. Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Tested-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-03-09 12:02:44 +04:00
{
clk: samsung: Convert common drivers to the new clk_hw API Clock providers should use the new struct clk_hw based API, so convert Samsung clock providers and their helper functions to the new approach. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2017-04-24 09:42:20 +03:00
struct clk_hw *clk_hw;
clk: samsung: Remove obsolete clkdev alias support Remove support for obsolete clkdev alias definition in generic helper macros for MUX, DIV, GATE and PLL clocks. clkdev aliases can be still created using samsung_clk_register_alias() function if given platform still needs them. All current drivers have been converted not to use *_A-style macros and checked if there are any clients for the PLL clocks, which had aliases created unconditionally. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2017-10-03 13:00:16 +03:00
unsigned int idx;
clk: samsung: add common clock framework helper functions for Samsung platforms All Samsung platforms include different types of clock including fixed-rate, mux, divider and gate clock types. There are typically hundreds of such clocks on each of the Samsung platforms. To enable Samsung platforms to register these clocks using the common clock framework, a bunch of utility functions are introduced here which simplify the clock registration process. The clocks are usually statically instantiated and registered with common clock framework. Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Tested-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-03-09 12:02:44 +04:00
for (idx = 0; idx < nr_clk; idx++, list++) {
clk: samsung: Add support for runtime PM This patch adds struct device pointer to samsung_clk_provider and forwarding it to clk_register_* functions, so drivers can register clocks, which use runtime pm feature. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com> Tested-by: Chanwoo Choi <cw00.choi@samsung.com> Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Michael Turquette <mturquette@baylibre.com> Link: lkml.kernel.org/r/1503302703-13801-3-git-send-email-m.szyprowski@samsung.com
2017-08-21 11:05:00 +03:00
clk_hw = clk_hw_register_mux(ctx->dev, list->name,
clk: samsung: Convert common drivers to the new clk_hw API Clock providers should use the new struct clk_hw based API, so convert Samsung clock providers and their helper functions to the new approach. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2017-04-24 09:42:20 +03:00
list->parent_names, list->num_parents, list->flags,
clk/samsung: add support for multiple clock providers Samsung CCF helper functions do not provide support to register multiple Clock Providers for a given SoC. Due to this limitation, SoC platforms are not able to use these helpers for registering multiple clock providers and are forced to bypass this layer. This layer is modified accordingly to enable the support for multiple clock providers. Clock file for exynos4, exynos5250, exynos5420, exynos5440, S3c64xx, S3c24xx are also modified as per changed helper functions. Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com> [t.figa: Modified s3c2410 clock driver as well] Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-03-12 18:56:44 +04:00
ctx->reg_base + list->offset,
list->shift, list->width, list->mux_flags, &ctx->lock);
clk: samsung: Convert common drivers to the new clk_hw API Clock providers should use the new struct clk_hw based API, so convert Samsung clock providers and their helper functions to the new approach. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2017-04-24 09:42:20 +03:00
if (IS_ERR(clk_hw)) {
clk: samsung: add common clock framework helper functions for Samsung platforms All Samsung platforms include different types of clock including fixed-rate, mux, divider and gate clock types. There are typically hundreds of such clocks on each of the Samsung platforms. To enable Samsung platforms to register these clocks using the common clock framework, a bunch of utility functions are introduced here which simplify the clock registration process. The clocks are usually statically instantiated and registered with common clock framework. Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Tested-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-03-09 12:02:44 +04:00
pr_err("%s: failed to register clock %s\n", __func__,
list->name);
continue;
}
clk: samsung: Convert common drivers to the new clk_hw API Clock providers should use the new struct clk_hw based API, so convert Samsung clock providers and their helper functions to the new approach. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2017-04-24 09:42:20 +03:00
samsung_clk_add_lookup(ctx, clk_hw, list->id);
clk: samsung: add common clock framework helper functions for Samsung platforms All Samsung platforms include different types of clock including fixed-rate, mux, divider and gate clock types. There are typically hundreds of such clocks on each of the Samsung platforms. To enable Samsung platforms to register these clocks using the common clock framework, a bunch of utility functions are introduced here which simplify the clock registration process. The clocks are usually statically instantiated and registered with common clock framework. Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Tested-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-03-09 12:02:44 +04:00
}
}
/* register a list of div clocks */
clk/samsung: add support for multiple clock providers Samsung CCF helper functions do not provide support to register multiple Clock Providers for a given SoC. Due to this limitation, SoC platforms are not able to use these helpers for registering multiple clock providers and are forced to bypass this layer. This layer is modified accordingly to enable the support for multiple clock providers. Clock file for exynos4, exynos5250, exynos5420, exynos5440, S3c64xx, S3c24xx are also modified as per changed helper functions. Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com> [t.figa: Modified s3c2410 clock driver as well] Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-03-12 18:56:44 +04:00
void __init samsung_clk_register_div(struct samsung_clk_provider *ctx,
clk: make several parent names const Since commit 2893c379461a ("clk: make strings in parent name arrays const") the name of parent clocks can be const. So add more const in several clock drivers. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Acked-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-05-28 11:45:51 +03:00
const struct samsung_div_clock *list,
clk/samsung: add support for multiple clock providers Samsung CCF helper functions do not provide support to register multiple Clock Providers for a given SoC. Due to this limitation, SoC platforms are not able to use these helpers for registering multiple clock providers and are forced to bypass this layer. This layer is modified accordingly to enable the support for multiple clock providers. Clock file for exynos4, exynos5250, exynos5420, exynos5440, S3c64xx, S3c24xx are also modified as per changed helper functions. Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com> [t.figa: Modified s3c2410 clock driver as well] Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-03-12 18:56:44 +04:00
unsigned int nr_clk)
clk: samsung: add common clock framework helper functions for Samsung platforms All Samsung platforms include different types of clock including fixed-rate, mux, divider and gate clock types. There are typically hundreds of such clocks on each of the Samsung platforms. To enable Samsung platforms to register these clocks using the common clock framework, a bunch of utility functions are introduced here which simplify the clock registration process. The clocks are usually statically instantiated and registered with common clock framework. Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Tested-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-03-09 12:02:44 +04:00
{
clk: samsung: Convert common drivers to the new clk_hw API Clock providers should use the new struct clk_hw based API, so convert Samsung clock providers and their helper functions to the new approach. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2017-04-24 09:42:20 +03:00
struct clk_hw *clk_hw;
clk: samsung: Remove obsolete clkdev alias support Remove support for obsolete clkdev alias definition in generic helper macros for MUX, DIV, GATE and PLL clocks. clkdev aliases can be still created using samsung_clk_register_alias() function if given platform still needs them. All current drivers have been converted not to use *_A-style macros and checked if there are any clients for the PLL clocks, which had aliases created unconditionally. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2017-10-03 13:00:16 +03:00
unsigned int idx;
clk: samsung: add common clock framework helper functions for Samsung platforms All Samsung platforms include different types of clock including fixed-rate, mux, divider and gate clock types. There are typically hundreds of such clocks on each of the Samsung platforms. To enable Samsung platforms to register these clocks using the common clock framework, a bunch of utility functions are introduced here which simplify the clock registration process. The clocks are usually statically instantiated and registered with common clock framework. Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Tested-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-03-09 12:02:44 +04:00
for (idx = 0; idx < nr_clk; idx++, list++) {
clk: samsung: register clk_div_tables for divider clocks On some Samsung platforms divider clocks only use specific divider combinations like the armdiv on s3c2443 and s3c2416. For these usecases the generic divider clock already provides the option of providing a lookup table mapping register values to divider values. Therefore add a new field to samsung_div_clock and if filled with a table, use clk_register_divider_table instead of clk_register_divider to register a divider clock Signed-off-by: Heiko Stuebner <heiko@sntech.de> Reviewed-by: Thomas Abraham <thomas.abraham@linaro.org> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-03-18 08:43:52 +04:00
if (list->table)
clk: samsung: Add support for runtime PM This patch adds struct device pointer to samsung_clk_provider and forwarding it to clk_register_* functions, so drivers can register clocks, which use runtime pm feature. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com> Tested-by: Chanwoo Choi <cw00.choi@samsung.com> Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Michael Turquette <mturquette@baylibre.com> Link: lkml.kernel.org/r/1503302703-13801-3-git-send-email-m.szyprowski@samsung.com
2017-08-21 11:05:00 +03:00
clk_hw = clk_hw_register_divider_table(ctx->dev,
clk: samsung: Convert common drivers to the new clk_hw API Clock providers should use the new struct clk_hw based API, so convert Samsung clock providers and their helper functions to the new approach. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2017-04-24 09:42:20 +03:00
list->name, list->parent_name, list->flags,
clk/samsung: add support for multiple clock providers Samsung CCF helper functions do not provide support to register multiple Clock Providers for a given SoC. Due to this limitation, SoC platforms are not able to use these helpers for registering multiple clock providers and are forced to bypass this layer. This layer is modified accordingly to enable the support for multiple clock providers. Clock file for exynos4, exynos5250, exynos5420, exynos5440, S3c64xx, S3c24xx are also modified as per changed helper functions. Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com> [t.figa: Modified s3c2410 clock driver as well] Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-03-12 18:56:44 +04:00
ctx->reg_base + list->offset,
list->shift, list->width, list->div_flags,
list->table, &ctx->lock);
clk: samsung: register clk_div_tables for divider clocks On some Samsung platforms divider clocks only use specific divider combinations like the armdiv on s3c2443 and s3c2416. For these usecases the generic divider clock already provides the option of providing a lookup table mapping register values to divider values. Therefore add a new field to samsung_div_clock and if filled with a table, use clk_register_divider_table instead of clk_register_divider to register a divider clock Signed-off-by: Heiko Stuebner <heiko@sntech.de> Reviewed-by: Thomas Abraham <thomas.abraham@linaro.org> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-03-18 08:43:52 +04:00
else
clk: samsung: Add support for runtime PM This patch adds struct device pointer to samsung_clk_provider and forwarding it to clk_register_* functions, so drivers can register clocks, which use runtime pm feature. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com> Tested-by: Chanwoo Choi <cw00.choi@samsung.com> Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Michael Turquette <mturquette@baylibre.com> Link: lkml.kernel.org/r/1503302703-13801-3-git-send-email-m.szyprowski@samsung.com
2017-08-21 11:05:00 +03:00
clk_hw = clk_hw_register_divider(ctx->dev, list->name,
clk/samsung: add support for multiple clock providers Samsung CCF helper functions do not provide support to register multiple Clock Providers for a given SoC. Due to this limitation, SoC platforms are not able to use these helpers for registering multiple clock providers and are forced to bypass this layer. This layer is modified accordingly to enable the support for multiple clock providers. Clock file for exynos4, exynos5250, exynos5420, exynos5440, S3c64xx, S3c24xx are also modified as per changed helper functions. Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com> [t.figa: Modified s3c2410 clock driver as well] Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-03-12 18:56:44 +04:00
list->parent_name, list->flags,
ctx->reg_base + list->offset, list->shift,
list->width, list->div_flags, &ctx->lock);
clk: samsung: Convert common drivers to the new clk_hw API Clock providers should use the new struct clk_hw based API, so convert Samsung clock providers and their helper functions to the new approach. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2017-04-24 09:42:20 +03:00
if (IS_ERR(clk_hw)) {
clk: samsung: add common clock framework helper functions for Samsung platforms All Samsung platforms include different types of clock including fixed-rate, mux, divider and gate clock types. There are typically hundreds of such clocks on each of the Samsung platforms. To enable Samsung platforms to register these clocks using the common clock framework, a bunch of utility functions are introduced here which simplify the clock registration process. The clocks are usually statically instantiated and registered with common clock framework. Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Tested-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-03-09 12:02:44 +04:00
pr_err("%s: failed to register clock %s\n", __func__,
list->name);
continue;
}
clk: samsung: Convert common drivers to the new clk_hw API Clock providers should use the new struct clk_hw based API, so convert Samsung clock providers and their helper functions to the new approach. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2017-04-24 09:42:20 +03:00
samsung_clk_add_lookup(ctx, clk_hw, list->id);
clk: samsung: add common clock framework helper functions for Samsung platforms All Samsung platforms include different types of clock including fixed-rate, mux, divider and gate clock types. There are typically hundreds of such clocks on each of the Samsung platforms. To enable Samsung platforms to register these clocks using the common clock framework, a bunch of utility functions are introduced here which simplify the clock registration process. The clocks are usually statically instantiated and registered with common clock framework. Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Tested-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-03-09 12:02:44 +04:00
}
}
/* register a list of gate clocks */
clk/samsung: add support for multiple clock providers Samsung CCF helper functions do not provide support to register multiple Clock Providers for a given SoC. Due to this limitation, SoC platforms are not able to use these helpers for registering multiple clock providers and are forced to bypass this layer. This layer is modified accordingly to enable the support for multiple clock providers. Clock file for exynos4, exynos5250, exynos5420, exynos5440, S3c64xx, S3c24xx are also modified as per changed helper functions. Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com> [t.figa: Modified s3c2410 clock driver as well] Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-03-12 18:56:44 +04:00
void __init samsung_clk_register_gate(struct samsung_clk_provider *ctx,
clk: make several parent names const Since commit 2893c379461a ("clk: make strings in parent name arrays const") the name of parent clocks can be const. So add more const in several clock drivers. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Acked-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-05-28 11:45:51 +03:00
const struct samsung_gate_clock *list,
clk/samsung: add support for multiple clock providers Samsung CCF helper functions do not provide support to register multiple Clock Providers for a given SoC. Due to this limitation, SoC platforms are not able to use these helpers for registering multiple clock providers and are forced to bypass this layer. This layer is modified accordingly to enable the support for multiple clock providers. Clock file for exynos4, exynos5250, exynos5420, exynos5440, S3c64xx, S3c24xx are also modified as per changed helper functions. Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com> [t.figa: Modified s3c2410 clock driver as well] Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-03-12 18:56:44 +04:00
unsigned int nr_clk)
clk: samsung: add common clock framework helper functions for Samsung platforms All Samsung platforms include different types of clock including fixed-rate, mux, divider and gate clock types. There are typically hundreds of such clocks on each of the Samsung platforms. To enable Samsung platforms to register these clocks using the common clock framework, a bunch of utility functions are introduced here which simplify the clock registration process. The clocks are usually statically instantiated and registered with common clock framework. Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Tested-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-03-09 12:02:44 +04:00
{
clk: samsung: Convert common drivers to the new clk_hw API Clock providers should use the new struct clk_hw based API, so convert Samsung clock providers and their helper functions to the new approach. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2017-04-24 09:42:20 +03:00
struct clk_hw *clk_hw;
clk: samsung: Remove obsolete clkdev alias support Remove support for obsolete clkdev alias definition in generic helper macros for MUX, DIV, GATE and PLL clocks. clkdev aliases can be still created using samsung_clk_register_alias() function if given platform still needs them. All current drivers have been converted not to use *_A-style macros and checked if there are any clients for the PLL clocks, which had aliases created unconditionally. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2017-10-03 13:00:16 +03:00
unsigned int idx;
clk: samsung: add common clock framework helper functions for Samsung platforms All Samsung platforms include different types of clock including fixed-rate, mux, divider and gate clock types. There are typically hundreds of such clocks on each of the Samsung platforms. To enable Samsung platforms to register these clocks using the common clock framework, a bunch of utility functions are introduced here which simplify the clock registration process. The clocks are usually statically instantiated and registered with common clock framework. Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Tested-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-03-09 12:02:44 +04:00
for (idx = 0; idx < nr_clk; idx++, list++) {
clk: samsung: Add support for runtime PM This patch adds struct device pointer to samsung_clk_provider and forwarding it to clk_register_* functions, so drivers can register clocks, which use runtime pm feature. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com> Tested-by: Chanwoo Choi <cw00.choi@samsung.com> Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Michael Turquette <mturquette@baylibre.com> Link: lkml.kernel.org/r/1503302703-13801-3-git-send-email-m.szyprowski@samsung.com
2017-08-21 11:05:00 +03:00
clk_hw = clk_hw_register_gate(ctx->dev, list->name, list->parent_name,
clk/samsung: add support for multiple clock providers Samsung CCF helper functions do not provide support to register multiple Clock Providers for a given SoC. Due to this limitation, SoC platforms are not able to use these helpers for registering multiple clock providers and are forced to bypass this layer. This layer is modified accordingly to enable the support for multiple clock providers. Clock file for exynos4, exynos5250, exynos5420, exynos5440, S3c64xx, S3c24xx are also modified as per changed helper functions. Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com> [t.figa: Modified s3c2410 clock driver as well] Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-03-12 18:56:44 +04:00
list->flags, ctx->reg_base + list->offset,
list->bit_idx, list->gate_flags, &ctx->lock);
clk: samsung: Convert common drivers to the new clk_hw API Clock providers should use the new struct clk_hw based API, so convert Samsung clock providers and their helper functions to the new approach. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2017-04-24 09:42:20 +03:00
if (IS_ERR(clk_hw)) {
clk: samsung: add common clock framework helper functions for Samsung platforms All Samsung platforms include different types of clock including fixed-rate, mux, divider and gate clock types. There are typically hundreds of such clocks on each of the Samsung platforms. To enable Samsung platforms to register these clocks using the common clock framework, a bunch of utility functions are introduced here which simplify the clock registration process. The clocks are usually statically instantiated and registered with common clock framework. Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Tested-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-03-09 12:02:44 +04:00
pr_err("%s: failed to register clock %s\n", __func__,
list->name);
continue;
}
clk: samsung: Convert common drivers to the new clk_hw API Clock providers should use the new struct clk_hw based API, so convert Samsung clock providers and their helper functions to the new approach. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2017-04-24 09:42:20 +03:00
samsung_clk_add_lookup(ctx, clk_hw, list->id);
clk: samsung: add common clock framework helper functions for Samsung platforms All Samsung platforms include different types of clock including fixed-rate, mux, divider and gate clock types. There are typically hundreds of such clocks on each of the Samsung platforms. To enable Samsung platforms to register these clocks using the common clock framework, a bunch of utility functions are introduced here which simplify the clock registration process. The clocks are usually statically instantiated and registered with common clock framework. Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Tested-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-03-09 12:02:44 +04:00
}
}
/*
* obtain the clock speed of all external fixed clock sources from device
* tree and register it
*/
clk/samsung: add support for multiple clock providers Samsung CCF helper functions do not provide support to register multiple Clock Providers for a given SoC. Due to this limitation, SoC platforms are not able to use these helpers for registering multiple clock providers and are forced to bypass this layer. This layer is modified accordingly to enable the support for multiple clock providers. Clock file for exynos4, exynos5250, exynos5420, exynos5440, S3c64xx, S3c24xx are also modified as per changed helper functions. Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com> [t.figa: Modified s3c2410 clock driver as well] Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-03-12 18:56:44 +04:00
void __init samsung_clk_of_register_fixed_ext(struct samsung_clk_provider *ctx,
clk: samsung: add common clock framework helper functions for Samsung platforms All Samsung platforms include different types of clock including fixed-rate, mux, divider and gate clock types. There are typically hundreds of such clocks on each of the Samsung platforms. To enable Samsung platforms to register these clocks using the common clock framework, a bunch of utility functions are introduced here which simplify the clock registration process. The clocks are usually statically instantiated and registered with common clock framework. Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Tested-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-03-09 12:02:44 +04:00
struct samsung_fixed_rate_clock *fixed_rate_clk,
unsigned int nr_fixed_rate_clk,
clk: samsung: Make of_device_id array const Array of struct of_device_id may be be const as expected by of_match_table field and of_find_matching_node_and_match() function. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Reviewed-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-06-26 16:00:06 +04:00
const struct of_device_id *clk_matches)
clk: samsung: add common clock framework helper functions for Samsung platforms All Samsung platforms include different types of clock including fixed-rate, mux, divider and gate clock types. There are typically hundreds of such clocks on each of the Samsung platforms. To enable Samsung platforms to register these clocks using the common clock framework, a bunch of utility functions are introduced here which simplify the clock registration process. The clocks are usually statically instantiated and registered with common clock framework. Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Tested-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-03-09 12:02:44 +04:00
{
const struct of_device_id *match;
clk/samsung: add support for multiple clock providers Samsung CCF helper functions do not provide support to register multiple Clock Providers for a given SoC. Due to this limitation, SoC platforms are not able to use these helpers for registering multiple clock providers and are forced to bypass this layer. This layer is modified accordingly to enable the support for multiple clock providers. Clock file for exynos4, exynos5250, exynos5420, exynos5440, S3c64xx, S3c24xx are also modified as per changed helper functions. Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com> [t.figa: Modified s3c2410 clock driver as well] Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-03-12 18:56:44 +04:00
struct device_node *clk_np;
clk: samsung: add common clock framework helper functions for Samsung platforms All Samsung platforms include different types of clock including fixed-rate, mux, divider and gate clock types. There are typically hundreds of such clocks on each of the Samsung platforms. To enable Samsung platforms to register these clocks using the common clock framework, a bunch of utility functions are introduced here which simplify the clock registration process. The clocks are usually statically instantiated and registered with common clock framework. Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Tested-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-03-09 12:02:44 +04:00
u32 freq;
clk/samsung: add support for multiple clock providers Samsung CCF helper functions do not provide support to register multiple Clock Providers for a given SoC. Due to this limitation, SoC platforms are not able to use these helpers for registering multiple clock providers and are forced to bypass this layer. This layer is modified accordingly to enable the support for multiple clock providers. Clock file for exynos4, exynos5250, exynos5420, exynos5440, S3c64xx, S3c24xx are also modified as per changed helper functions. Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com> [t.figa: Modified s3c2410 clock driver as well] Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-03-12 18:56:44 +04:00
for_each_matching_node_and_match(clk_np, clk_matches, &match) {
if (of_property_read_u32(clk_np, "clock-frequency", &freq))
clk: samsung: add common clock framework helper functions for Samsung platforms All Samsung platforms include different types of clock including fixed-rate, mux, divider and gate clock types. There are typically hundreds of such clocks on each of the Samsung platforms. To enable Samsung platforms to register these clocks using the common clock framework, a bunch of utility functions are introduced here which simplify the clock registration process. The clocks are usually statically instantiated and registered with common clock framework. Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Tested-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-03-09 12:02:44 +04:00
continue;
clk: samsung: fixed compiler warning [-Wpointer-to-int-cast] When compiled using ARM64 cross compiler, gcc complains as drivers/clk/samsung/clk.c:293:18: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] Signed-off-by: Pankaj Dubey <pankaj.dubey@samsung.com> Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-02-26 06:42:41 +04:00
fixed_rate_clk[(unsigned long)match->data].fixed_rate = freq;
clk: samsung: add common clock framework helper functions for Samsung platforms All Samsung platforms include different types of clock including fixed-rate, mux, divider and gate clock types. There are typically hundreds of such clocks on each of the Samsung platforms. To enable Samsung platforms to register these clocks using the common clock framework, a bunch of utility functions are introduced here which simplify the clock registration process. The clocks are usually statically instantiated and registered with common clock framework. Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Tested-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-03-09 12:02:44 +04:00
}
clk/samsung: add support for multiple clock providers Samsung CCF helper functions do not provide support to register multiple Clock Providers for a given SoC. Due to this limitation, SoC platforms are not able to use these helpers for registering multiple clock providers and are forced to bypass this layer. This layer is modified accordingly to enable the support for multiple clock providers. Clock file for exynos4, exynos5250, exynos5420, exynos5440, S3c64xx, S3c24xx are also modified as per changed helper functions. Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com> [t.figa: Modified s3c2410 clock driver as well] Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-03-12 18:56:44 +04:00
samsung_clk_register_fixed_rate(ctx, fixed_rate_clk, nr_fixed_rate_clk);
clk: samsung: add common clock framework helper functions for Samsung platforms All Samsung platforms include different types of clock including fixed-rate, mux, divider and gate clock types. There are typically hundreds of such clocks on each of the Samsung platforms. To enable Samsung platforms to register these clocks using the common clock framework, a bunch of utility functions are introduced here which simplify the clock registration process. The clocks are usually statically instantiated and registered with common clock framework. Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Tested-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-03-09 12:02:44 +04:00
}
clk: samsung: Factor out the common code to clk.c While adding clock support for Exynos5260, the infrastructure to register multiple clock controllers was introduced. Factor out the support for registering multiple clock controller from Exynos5260 clock code to common samsung clock code so that it can be used by other Exynos SoC which have multiple clock controllers. Signed-off-by: Naveen Krishna Ch <naveenkrishna.ch@gmail.com> Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com> Reviewed-by: Thomas Abraham <thomas.ab@samsung.com> Tested-by: Thomas Abraham <thomas.ab@samsung.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2014-09-22 08:47:02 +04:00
#ifdef CONFIG_PM_SLEEP
static int samsung_clk_suspend(void)
{
struct samsung_clock_reg_cache *reg_cache;
clk: samsung: Add support for setting registers state before suspend Some registers of clock controller have to be set to certain values before entering system suspend state. Till now drivers did that on their own, but it will be easier to handle it by generic code and let drivers simply to provide the list of registers and their state. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Sylwester Nawrocki <snawrocki@kernel.org>
2018-09-06 18:55:30 +03:00
list_for_each_entry(reg_cache, &clock_reg_cache_list, node) {
clk: samsung: Factor out the common code to clk.c While adding clock support for Exynos5260, the infrastructure to register multiple clock controllers was introduced. Factor out the support for registering multiple clock controller from Exynos5260 clock code to common samsung clock code so that it can be used by other Exynos SoC which have multiple clock controllers. Signed-off-by: Naveen Krishna Ch <naveenkrishna.ch@gmail.com> Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com> Reviewed-by: Thomas Abraham <thomas.ab@samsung.com> Tested-by: Thomas Abraham <thomas.ab@samsung.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2014-09-22 08:47:02 +04:00
samsung_clk_save(reg_cache->reg_base, reg_cache->rdump,
reg_cache->rd_num);
clk: samsung: Add support for setting registers state before suspend Some registers of clock controller have to be set to certain values before entering system suspend state. Till now drivers did that on their own, but it will be easier to handle it by generic code and let drivers simply to provide the list of registers and their state. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Sylwester Nawrocki <snawrocki@kernel.org>
2018-09-06 18:55:30 +03:00
samsung_clk_restore(reg_cache->reg_base, reg_cache->rsuspend,
reg_cache->rsuspend_num);
}
clk: samsung: Factor out the common code to clk.c While adding clock support for Exynos5260, the infrastructure to register multiple clock controllers was introduced. Factor out the support for registering multiple clock controller from Exynos5260 clock code to common samsung clock code so that it can be used by other Exynos SoC which have multiple clock controllers. Signed-off-by: Naveen Krishna Ch <naveenkrishna.ch@gmail.com> Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com> Reviewed-by: Thomas Abraham <thomas.ab@samsung.com> Tested-by: Thomas Abraham <thomas.ab@samsung.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2014-09-22 08:47:02 +04:00
return 0;
}
static void samsung_clk_resume(void)
{
struct samsung_clock_reg_cache *reg_cache;
list_for_each_entry(reg_cache, &clock_reg_cache_list, node)
samsung_clk_restore(reg_cache->reg_base, reg_cache->rdump,
reg_cache->rd_num);
}
static struct syscore_ops samsung_clk_syscore_ops = {
.suspend = samsung_clk_suspend,
.resume = samsung_clk_resume,
};
clk: samsung: Add support for setting registers state before suspend Some registers of clock controller have to be set to certain values before entering system suspend state. Till now drivers did that on their own, but it will be easier to handle it by generic code and let drivers simply to provide the list of registers and their state. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Sylwester Nawrocki <snawrocki@kernel.org>
2018-09-06 18:55:30 +03:00
void samsung_clk_extended_sleep_init(void __iomem *reg_base,
clk: samsung: exynos5433: prepare for adding CPU clocks Open-code samsung_cmu_register_one() calls for CMU_APOLLO and CMU_ATLAS setup code as a preparation for adding CPU clocks support for Exynos5433. There should be no functional change resulting from this patch. Cc: Kukjin Kim <kgene@kernel.org> CC: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2016-05-24 16:19:15 +03:00
const unsigned long *rdump,
clk: samsung: Add support for setting registers state before suspend Some registers of clock controller have to be set to certain values before entering system suspend state. Till now drivers did that on their own, but it will be easier to handle it by generic code and let drivers simply to provide the list of registers and their state. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Sylwester Nawrocki <snawrocki@kernel.org>
2018-09-06 18:55:30 +03:00
unsigned long nr_rdump,
const struct samsung_clk_reg_dump *rsuspend,
unsigned long nr_rsuspend)
clk: samsung: Factor out the common code to clk.c While adding clock support for Exynos5260, the infrastructure to register multiple clock controllers was introduced. Factor out the support for registering multiple clock controller from Exynos5260 clock code to common samsung clock code so that it can be used by other Exynos SoC which have multiple clock controllers. Signed-off-by: Naveen Krishna Ch <naveenkrishna.ch@gmail.com> Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com> Reviewed-by: Thomas Abraham <thomas.ab@samsung.com> Tested-by: Thomas Abraham <thomas.ab@samsung.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2014-09-22 08:47:02 +04:00
{
struct samsung_clock_reg_cache *reg_cache;
reg_cache = kzalloc(sizeof(struct samsung_clock_reg_cache),
GFP_KERNEL);
if (!reg_cache)
panic("could not allocate register reg_cache.\n");
reg_cache->rdump = samsung_clk_alloc_reg_dump(rdump, nr_rdump);
if (!reg_cache->rdump)
panic("could not allocate register dump storage.\n");
if (list_empty(&clock_reg_cache_list))
register_syscore_ops(&samsung_clk_syscore_ops);
reg_cache->reg_base = reg_base;
reg_cache->rd_num = nr_rdump;
clk: samsung: Add support for setting registers state before suspend Some registers of clock controller have to be set to certain values before entering system suspend state. Till now drivers did that on their own, but it will be easier to handle it by generic code and let drivers simply to provide the list of registers and their state. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Sylwester Nawrocki <snawrocki@kernel.org>
2018-09-06 18:55:30 +03:00
reg_cache->rsuspend = rsuspend;
reg_cache->rsuspend_num = nr_rsuspend;
clk: samsung: Factor out the common code to clk.c While adding clock support for Exynos5260, the infrastructure to register multiple clock controllers was introduced. Factor out the support for registering multiple clock controller from Exynos5260 clock code to common samsung clock code so that it can be used by other Exynos SoC which have multiple clock controllers. Signed-off-by: Naveen Krishna Ch <naveenkrishna.ch@gmail.com> Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com> Reviewed-by: Thomas Abraham <thomas.ab@samsung.com> Tested-by: Thomas Abraham <thomas.ab@samsung.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2014-09-22 08:47:02 +04:00
list_add_tail(&reg_cache->node, &clock_reg_cache_list);
}
#endif
/*
* Common function which registers plls, muxes, dividers and gates
* for each CMU. It also add CMU register list to register cache.
*/
clk: samsung: Change the return value of samsung_cmu_register_one() This patch changes the return value of samsung_cmu_register_one() from 'void' to 'samsung_clk_provider structure' pointer type because samsung_clk_provider may be used in each clock driver. Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2014-12-23 10:40:21 +03:00
struct samsung_clk_provider * __init samsung_cmu_register_one(
struct device_node *np,
clk: samsung: Constify clock init data with clock arrays samsung_cmu_register_one() can accept pointer to const initialization data: struct samsung_cmu_info. The members of the latter can also be pointers to const data. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2016-05-11 15:01:57 +03:00
const struct samsung_cmu_info *cmu)
clk: samsung: Factor out the common code to clk.c While adding clock support for Exynos5260, the infrastructure to register multiple clock controllers was introduced. Factor out the support for registering multiple clock controller from Exynos5260 clock code to common samsung clock code so that it can be used by other Exynos SoC which have multiple clock controllers. Signed-off-by: Naveen Krishna Ch <naveenkrishna.ch@gmail.com> Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com> Reviewed-by: Thomas Abraham <thomas.ab@samsung.com> Tested-by: Thomas Abraham <thomas.ab@samsung.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2014-09-22 08:47:02 +04:00
{
void __iomem *reg_base;
struct samsung_clk_provider *ctx;
reg_base = of_iomap(np, 0);
clk: samsung: Change the return value of samsung_cmu_register_one() This patch changes the return value of samsung_cmu_register_one() from 'void' to 'samsung_clk_provider structure' pointer type because samsung_clk_provider may be used in each clock driver. Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2014-12-23 10:40:21 +03:00
if (!reg_base) {
clk: samsung: Factor out the common code to clk.c While adding clock support for Exynos5260, the infrastructure to register multiple clock controllers was introduced. Factor out the support for registering multiple clock controller from Exynos5260 clock code to common samsung clock code so that it can be used by other Exynos SoC which have multiple clock controllers. Signed-off-by: Naveen Krishna Ch <naveenkrishna.ch@gmail.com> Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com> Reviewed-by: Thomas Abraham <thomas.ab@samsung.com> Tested-by: Thomas Abraham <thomas.ab@samsung.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2014-09-22 08:47:02 +04:00
panic("%s: failed to map registers\n", __func__);
clk: samsung: Change the return value of samsung_cmu_register_one() This patch changes the return value of samsung_cmu_register_one() from 'void' to 'samsung_clk_provider structure' pointer type because samsung_clk_provider may be used in each clock driver. Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2014-12-23 10:40:21 +03:00
return NULL;
}
clk: samsung: Factor out the common code to clk.c While adding clock support for Exynos5260, the infrastructure to register multiple clock controllers was introduced. Factor out the support for registering multiple clock controller from Exynos5260 clock code to common samsung clock code so that it can be used by other Exynos SoC which have multiple clock controllers. Signed-off-by: Naveen Krishna Ch <naveenkrishna.ch@gmail.com> Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com> Reviewed-by: Thomas Abraham <thomas.ab@samsung.com> Tested-by: Thomas Abraham <thomas.ab@samsung.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2014-09-22 08:47:02 +04:00
ctx = samsung_clk_init(np, reg_base, cmu->nr_clk_ids);
if (cmu->pll_clks)
samsung_clk_register_pll(ctx, cmu->pll_clks, cmu->nr_pll_clks,
reg_base);
if (cmu->mux_clks)
samsung_clk_register_mux(ctx, cmu->mux_clks,
cmu->nr_mux_clks);
if (cmu->div_clks)
samsung_clk_register_div(ctx, cmu->div_clks, cmu->nr_div_clks);
if (cmu->gate_clks)
samsung_clk_register_gate(ctx, cmu->gate_clks,
cmu->nr_gate_clks);
if (cmu->fixed_clks)
samsung_clk_register_fixed_rate(ctx, cmu->fixed_clks,
cmu->nr_fixed_clks);
clk: samsung: Add fixed_factor_clocks field to struct exynos_cmu_info Add the fields "fixed_factor_clks" and "nr_fixed_factor_clks" to "struct exynos_cmu_info" to allow registering of fixed factor clocks as well with exynos_cmu_register_one(). Signed-off-by: Naveen Krishna Ch <naveenkrishna.ch@gmail.com> Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com> Reviewed-by: Thomas Abraham <thomas.ab@samsung.com> Tested-by: Thomas Abraham <thomas.ab@samsung.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2014-09-22 08:47:03 +04:00
if (cmu->fixed_factor_clks)
samsung_clk_register_fixed_factor(ctx, cmu->fixed_factor_clks,
cmu->nr_fixed_factor_clks);
clk: samsung: Factor out the common code to clk.c While adding clock support for Exynos5260, the infrastructure to register multiple clock controllers was introduced. Factor out the support for registering multiple clock controller from Exynos5260 clock code to common samsung clock code so that it can be used by other Exynos SoC which have multiple clock controllers. Signed-off-by: Naveen Krishna Ch <naveenkrishna.ch@gmail.com> Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com> Reviewed-by: Thomas Abraham <thomas.ab@samsung.com> Tested-by: Thomas Abraham <thomas.ab@samsung.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2014-09-22 08:47:02 +04:00
if (cmu->clk_regs)
clk: samsung: Add support for setting registers state before suspend Some registers of clock controller have to be set to certain values before entering system suspend state. Till now drivers did that on their own, but it will be easier to handle it by generic code and let drivers simply to provide the list of registers and their state. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Sylwester Nawrocki <snawrocki@kernel.org>
2018-09-06 18:55:30 +03:00
samsung_clk_extended_sleep_init(reg_base,
cmu->clk_regs, cmu->nr_clk_regs,
cmu->suspend_regs, cmu->nr_suspend_regs);
clk: samsung: add support for CPU clocks Adds 'struct samsung_cpu_clock' and corresponding CPU clock registration function to the samsung common clk driver. This allows samsung clock drivers to register their CPU clocks with the samsung_cmu_register_one() API. Currently the exynos5433 apollo and atlas clks have their own custom init functions to handle registering their CPU clocks. With this patch we can drop their custom CLK_OF_DECLARE functions and directly call samsung_cmu_register_one(). Signed-off-by: Will McVicker <willmcvicker@google.com> Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Link: https://lore.kernel.org/r/20211014195347.3635601-2-willmcvicker@google.com Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2021-10-14 22:53:45 +03:00
if (cmu->cpu_clks)
samsung_clk_register_cpu(ctx, cmu->cpu_clks, cmu->nr_cpu_clks);
clk: samsung: Factor out the common code to clk.c While adding clock support for Exynos5260, the infrastructure to register multiple clock controllers was introduced. Factor out the support for registering multiple clock controller from Exynos5260 clock code to common samsung clock code so that it can be used by other Exynos SoC which have multiple clock controllers. Signed-off-by: Naveen Krishna Ch <naveenkrishna.ch@gmail.com> Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com> Reviewed-by: Thomas Abraham <thomas.ab@samsung.com> Tested-by: Thomas Abraham <thomas.ab@samsung.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2014-09-22 08:47:02 +04:00
samsung_clk_of_add_provider(np, ctx);
clk: samsung: Change the return value of samsung_cmu_register_one() This patch changes the return value of samsung_cmu_register_one() from 'void' to 'samsung_clk_provider structure' pointer type because samsung_clk_provider may be used in each clock driver. Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2014-12-23 10:40:21 +03:00
return ctx;
clk: samsung: Factor out the common code to clk.c While adding clock support for Exynos5260, the infrastructure to register multiple clock controllers was introduced. Factor out the support for registering multiple clock controller from Exynos5260 clock code to common samsung clock code so that it can be used by other Exynos SoC which have multiple clock controllers. Signed-off-by: Naveen Krishna Ch <naveenkrishna.ch@gmail.com> Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com> Reviewed-by: Thomas Abraham <thomas.ab@samsung.com> Tested-by: Thomas Abraham <thomas.ab@samsung.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2014-09-22 08:47:02 +04:00
}
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