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linux/drivers/clk/qcom/videocc-sm8350.c
Konrad Dybcio fd0b5b106f clk: qcom: Introduce SM8350 VIDEOCC 
Add support for the Video Clock Controller found on the SM8350 SoC.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230413-topic-lahaina_vidcc-v4-2-86c714a66a81@linaro.org
2023-05-24 21:47:16 -07:00

553 lines
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// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2019-2020, The Linux Foundation. All rights reserved.
* Copyright (c) 2023, Linaro Limited
*/
#include <linux/clk-provider.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/pm_clock.h>
#include <linux/pm_runtime.h>
#include <linux/regmap.h>
#include <dt-bindings/clock/qcom,sm8350-videocc.h>
#include <dt-bindings/reset/qcom,sm8350-videocc.h>
#include "clk-alpha-pll.h"
#include "clk-branch.h"
#include "clk-rcg.h"
#include "clk-regmap.h"
#include "clk-regmap-divider.h"
#include "common.h"
#include "reset.h"
#include "gdsc.h"
enum {
DT_BI_TCXO,
DT_BI_TCXO_AO,
DT_SLEEP_CLK,
};
enum {
P_BI_TCXO,
P_BI_TCXO_AO,
P_SLEEP_CLK,
P_VIDEO_PLL0_OUT_MAIN,
P_VIDEO_PLL1_OUT_MAIN,
};
static const struct pll_vco lucid_5lpe_vco[] = {
{ 249600000, 1750000000, 0 },
};
static const struct alpha_pll_config video_pll0_config = {
.l = 0x25,
.alpha = 0x8000,
.config_ctl_val = 0x20485699,
.config_ctl_hi_val = 0x00002261,
.config_ctl_hi1_val = 0x2a9a699c,
.test_ctl_val = 0x00000000,
.test_ctl_hi_val = 0x00000000,
.test_ctl_hi1_val = 0x01800000,
.user_ctl_val = 0x00000000,
.user_ctl_hi_val = 0x00000805,
.user_ctl_hi1_val = 0x00000000,
};
static struct clk_alpha_pll video_pll0 = {
.offset = 0x42c,
.vco_table = lucid_5lpe_vco,
.num_vco = ARRAY_SIZE(lucid_5lpe_vco),
.regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_LUCID],
.clkr = {
.hw.init = &(const struct clk_init_data) {
.name = "video_pll0",
.parent_data = &(const struct clk_parent_data){
.index = DT_BI_TCXO,
},
.num_parents = 1,
.ops = &clk_alpha_pll_lucid_5lpe_ops,
},
},
};
static const struct alpha_pll_config video_pll1_config = {
.l = 0x2b,
.alpha = 0xc000,
.config_ctl_val = 0x20485699,
.config_ctl_hi_val = 0x00002261,
.config_ctl_hi1_val = 0x2a9a699c,
.test_ctl_val = 0x00000000,
.test_ctl_hi_val = 0x00000000,
.test_ctl_hi1_val = 0x01800000,
.user_ctl_val = 0x00000000,
.user_ctl_hi_val = 0x00000805,
.user_ctl_hi1_val = 0x00000000,
};
static struct clk_alpha_pll video_pll1 = {
.offset = 0x7d0,
.vco_table = lucid_5lpe_vco,
.num_vco = ARRAY_SIZE(lucid_5lpe_vco),
.regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_LUCID],
.clkr = {
.hw.init = &(const struct clk_init_data) {
.name = "video_pll1",
.parent_data = &(const struct clk_parent_data){
.index = DT_BI_TCXO,
},
.num_parents = 1,
.ops = &clk_alpha_pll_lucid_5lpe_ops,
},
},
};
static const struct parent_map video_cc_parent_map_0[] = {
{ P_BI_TCXO_AO, 0 },
};
static const struct clk_parent_data video_cc_parent_data_0[] = {
{ .index = DT_BI_TCXO_AO },
};
static const struct parent_map video_cc_parent_map_1[] = {
{ P_BI_TCXO, 0 },
{ P_VIDEO_PLL0_OUT_MAIN, 1 },
};
static const struct clk_parent_data video_cc_parent_data_1[] = {
{ .index = DT_BI_TCXO },
{ .hw = &video_pll0.clkr.hw },
};
static const struct parent_map video_cc_parent_map_2[] = {
{ P_BI_TCXO, 0 },
{ P_VIDEO_PLL1_OUT_MAIN, 1 },
};
static const struct clk_parent_data video_cc_parent_data_2[] = {
{ .index = DT_BI_TCXO },
{ .hw = &video_pll1.clkr.hw },
};
static const struct freq_tbl ftbl_video_cc_ahb_clk_src[] = {
F(19200000, P_BI_TCXO, 1, 0, 0),
{ }
};
static struct clk_rcg2 video_cc_ahb_clk_src = {
.cmd_rcgr = 0xbd4,
.mnd_width = 0,
.hid_width = 5,
.parent_map = video_cc_parent_map_0,
.freq_tbl = ftbl_video_cc_ahb_clk_src,
.clkr.hw.init = &(const struct clk_init_data) {
.name = "video_cc_ahb_clk_src",
.parent_data = video_cc_parent_data_0,
.num_parents = ARRAY_SIZE(video_cc_parent_data_0),
.flags = CLK_SET_RATE_PARENT,
.ops = &clk_rcg2_shared_ops,
},
};
static const struct freq_tbl ftbl_video_cc_mvs0_clk_src[] = {
F(720000000, P_VIDEO_PLL0_OUT_MAIN, 1, 0, 0),
F(1014000000, P_VIDEO_PLL0_OUT_MAIN, 1, 0, 0),
F(1098000000, P_VIDEO_PLL0_OUT_MAIN, 1, 0, 0),
F(1332000000, P_VIDEO_PLL0_OUT_MAIN, 1, 0, 0),
{ }
};
static struct clk_rcg2 video_cc_mvs0_clk_src = {
.cmd_rcgr = 0xb94,
.mnd_width = 0,
.hid_width = 5,
.parent_map = video_cc_parent_map_1,
.freq_tbl = ftbl_video_cc_mvs0_clk_src,
.clkr.hw.init = &(const struct clk_init_data) {
.name = "video_cc_mvs0_clk_src",
.parent_data = video_cc_parent_data_1,
.num_parents = ARRAY_SIZE(video_cc_parent_data_1),
.flags = CLK_SET_RATE_PARENT,
.ops = &clk_rcg2_shared_ops,
},
};
static const struct freq_tbl ftbl_video_cc_mvs1_clk_src[] = {
F(840000000, P_VIDEO_PLL1_OUT_MAIN, 1, 0, 0),
F(1098000000, P_VIDEO_PLL1_OUT_MAIN, 1, 0, 0),
F(1332000000, P_VIDEO_PLL1_OUT_MAIN, 1, 0, 0),
{ }
};
static struct clk_rcg2 video_cc_mvs1_clk_src = {
.cmd_rcgr = 0xbb4,
.mnd_width = 0,
.hid_width = 5,
.parent_map = video_cc_parent_map_2,
.freq_tbl = ftbl_video_cc_mvs1_clk_src,
.clkr.hw.init = &(const struct clk_init_data) {
.name = "video_cc_mvs1_clk_src",
.parent_data = video_cc_parent_data_2,
.num_parents = ARRAY_SIZE(video_cc_parent_data_2),
.flags = CLK_SET_RATE_PARENT,
.ops = &clk_rcg2_shared_ops,
},
};
static const struct freq_tbl ftbl_video_cc_sleep_clk_src[] = {
F(32000, P_SLEEP_CLK, 1, 0, 0),
{ }
};
static struct clk_rcg2 video_cc_sleep_clk_src = {
.cmd_rcgr = 0xef0,
.mnd_width = 0,
.hid_width = 5,
.freq_tbl = ftbl_video_cc_sleep_clk_src,
.clkr.hw.init = &(const struct clk_init_data) {
.name = "video_cc_sleep_clk_src",
.parent_data = &(const struct clk_parent_data){
.index = DT_SLEEP_CLK,
},
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
.ops = &clk_rcg2_ops,
},
};
static struct clk_rcg2 video_cc_xo_clk_src = {
.cmd_rcgr = 0xecc,
.mnd_width = 0,
.hid_width = 5,
.parent_map = video_cc_parent_map_0,
.freq_tbl = ftbl_video_cc_ahb_clk_src,
.clkr.hw.init = &(const struct clk_init_data) {
.name = "video_cc_xo_clk_src",
.parent_data = video_cc_parent_data_0,
.num_parents = ARRAY_SIZE(video_cc_parent_data_0),
.flags = CLK_SET_RATE_PARENT,
.ops = &clk_rcg2_ops,
},
};
static struct clk_regmap_div video_cc_mvs0_div_clk_src = {
.reg = 0xd54,
.shift = 0,
.width = 4,
.clkr.hw.init = &(const struct clk_init_data) {
.name = "video_cc_mvs0_div_clk_src",
.parent_hws = (const struct clk_hw*[]){
&video_cc_mvs0_clk_src.clkr.hw,
},
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
.ops = &clk_regmap_div_ro_ops,
},
};
static struct clk_regmap_div video_cc_mvs0c_div2_div_clk_src = {
.reg = 0xc54,
.shift = 0,
.width = 4,
.clkr.hw.init = &(const struct clk_init_data) {
.name = "video_cc_mvs0c_div2_div_clk_src",
.parent_hws = (const struct clk_hw*[]){
&video_cc_mvs0_clk_src.clkr.hw,
},
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
.ops = &clk_regmap_div_ro_ops,
},
};
static struct clk_regmap_div video_cc_mvs1_div_clk_src = {
.reg = 0xdd4,
.shift = 0,
.width = 4,
.clkr.hw.init = &(const struct clk_init_data) {
.name = "video_cc_mvs1_div_clk_src",
.parent_hws = (const struct clk_hw*[]){
&video_cc_mvs1_clk_src.clkr.hw,
},
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
.ops = &clk_regmap_div_ro_ops,
},
};
static struct clk_regmap_div video_cc_mvs1c_div2_div_clk_src = {
.reg = 0xcf4,
.shift = 0,
.width = 4,
.clkr.hw.init = &(const struct clk_init_data) {
.name = "video_cc_mvs1c_div2_div_clk_src",
.parent_hws = (const struct clk_hw*[]){
&video_cc_mvs1_clk_src.clkr.hw,
},
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
.ops = &clk_regmap_div_ro_ops,
},
};
static struct clk_branch video_cc_mvs0_clk = {
.halt_reg = 0xd34,
.halt_check = BRANCH_HALT_VOTED,
.hwcg_reg = 0xd34,
.hwcg_bit = 1,
.clkr = {
.enable_reg = 0xd34,
.enable_mask = BIT(0),
.hw.init = &(const struct clk_init_data) {
.name = "video_cc_mvs0_clk",
.parent_hws = (const struct clk_hw*[]){
&video_cc_mvs0_div_clk_src.clkr.hw,
},
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
.ops = &clk_branch2_ops,
},
},
};
static struct clk_branch video_cc_mvs0c_clk = {
.halt_reg = 0xc34,
.halt_check = BRANCH_HALT,
.clkr = {
.enable_reg = 0xc34,
.enable_mask = BIT(0),
.hw.init = &(const struct clk_init_data) {
.name = "video_cc_mvs0c_clk",
.parent_hws = (const struct clk_hw*[]){
&video_cc_mvs0c_div2_div_clk_src.clkr.hw,
},
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
.ops = &clk_branch2_ops,
},
},
};
static struct clk_branch video_cc_mvs1_clk = {
.halt_reg = 0xdb4,
.halt_check = BRANCH_HALT_VOTED,
.hwcg_reg = 0xdb4,
.hwcg_bit = 1,
.clkr = {
.enable_reg = 0xdb4,
.enable_mask = BIT(0),
.hw.init = &(const struct clk_init_data) {
.name = "video_cc_mvs1_clk",
.parent_hws = (const struct clk_hw*[]){
&video_cc_mvs1_div_clk_src.clkr.hw,
},
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
.ops = &clk_branch2_ops,
},
},
};
static struct clk_branch video_cc_mvs1_div2_clk = {
.halt_reg = 0xdf4,
.halt_check = BRANCH_HALT_VOTED,
.hwcg_reg = 0xdf4,
.hwcg_bit = 1,
.clkr = {
.enable_reg = 0xdf4,
.enable_mask = BIT(0),
.hw.init = &(const struct clk_init_data) {
.name = "video_cc_mvs1_div2_clk",
.parent_hws = (const struct clk_hw*[]){
&video_cc_mvs1c_div2_div_clk_src.clkr.hw,
},
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
.ops = &clk_branch2_ops,
},
},
};
static struct clk_branch video_cc_mvs1c_clk = {
.halt_reg = 0xcd4,
.halt_check = BRANCH_HALT,
.clkr = {
.enable_reg = 0xcd4,
.enable_mask = BIT(0),
.hw.init = &(const struct clk_init_data) {
.name = "video_cc_mvs1c_clk",
.parent_hws = (const struct clk_hw*[]){
&video_cc_mvs1c_div2_div_clk_src.clkr.hw,
},
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
.ops = &clk_branch2_ops,
},
},
};
static struct clk_branch video_cc_sleep_clk = {
.halt_reg = 0xf10,
.halt_check = BRANCH_HALT,
.clkr = {
.enable_reg = 0xf10,
.enable_mask = BIT(0),
.hw.init = &(const struct clk_init_data) {
.name = "video_cc_sleep_clk",
.parent_hws = (const struct clk_hw*[]){
&video_cc_sleep_clk_src.clkr.hw,
},
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
.ops = &clk_branch2_ops,
},
},
};
static struct gdsc mvs0c_gdsc = {
.gdscr = 0xbf8,
.pd = {
.name = "mvs0c_gdsc",
},
.flags = RETAIN_FF_ENABLE,
.pwrsts = PWRSTS_OFF_ON,
};
static struct gdsc mvs1c_gdsc = {
.gdscr = 0xc98,
.pd = {
.name = "mvs1c_gdsc",
},
.flags = RETAIN_FF_ENABLE,
.pwrsts = PWRSTS_OFF_ON,
};
static struct gdsc mvs0_gdsc = {
.gdscr = 0xd18,
.pd = {
.name = "mvs0_gdsc",
},
.flags = HW_CTRL | RETAIN_FF_ENABLE,
.pwrsts = PWRSTS_OFF_ON,
};
static struct gdsc mvs1_gdsc = {
.gdscr = 0xd98,
.pd = {
.name = "mvs1_gdsc",
},
.flags = HW_CTRL | RETAIN_FF_ENABLE,
.pwrsts = PWRSTS_OFF_ON,
};
static struct clk_regmap *video_cc_sm8350_clocks[] = {
[VIDEO_CC_AHB_CLK_SRC] = &video_cc_ahb_clk_src.clkr,
[VIDEO_CC_MVS0_CLK] = &video_cc_mvs0_clk.clkr,
[VIDEO_CC_MVS0_CLK_SRC] = &video_cc_mvs0_clk_src.clkr,
[VIDEO_CC_MVS0_DIV_CLK_SRC] = &video_cc_mvs0_div_clk_src.clkr,
[VIDEO_CC_MVS0C_CLK] = &video_cc_mvs0c_clk.clkr,
[VIDEO_CC_MVS0C_DIV2_DIV_CLK_SRC] = &video_cc_mvs0c_div2_div_clk_src.clkr,
[VIDEO_CC_MVS1_CLK] = &video_cc_mvs1_clk.clkr,
[VIDEO_CC_MVS1_CLK_SRC] = &video_cc_mvs1_clk_src.clkr,
[VIDEO_CC_MVS1_DIV2_CLK] = &video_cc_mvs1_div2_clk.clkr,
[VIDEO_CC_MVS1_DIV_CLK_SRC] = &video_cc_mvs1_div_clk_src.clkr,
[VIDEO_CC_MVS1C_CLK] = &video_cc_mvs1c_clk.clkr,
[VIDEO_CC_MVS1C_DIV2_DIV_CLK_SRC] = &video_cc_mvs1c_div2_div_clk_src.clkr,
[VIDEO_CC_SLEEP_CLK] = &video_cc_sleep_clk.clkr,
[VIDEO_CC_SLEEP_CLK_SRC] = &video_cc_sleep_clk_src.clkr,
[VIDEO_CC_XO_CLK_SRC] = &video_cc_xo_clk_src.clkr,
[VIDEO_PLL0] = &video_pll0.clkr,
[VIDEO_PLL1] = &video_pll1.clkr,
};
static const struct qcom_reset_map video_cc_sm8350_resets[] = {
[VIDEO_CC_CVP_INTERFACE_BCR] = { 0xe54 },
[VIDEO_CC_CVP_MVS0_BCR] = { 0xd14 },
[VIDEO_CC_MVS0C_CLK_ARES] = { 0xc34, 2 },
[VIDEO_CC_CVP_MVS0C_BCR] = { 0xbf4 },
[VIDEO_CC_CVP_MVS1_BCR] = { 0xd94 },
[VIDEO_CC_MVS1C_CLK_ARES] = { 0xcd4, 2 },
[VIDEO_CC_CVP_MVS1C_BCR] = { 0xc94 },
};
static struct gdsc *video_cc_sm8350_gdscs[] = {
[MVS0C_GDSC] = &mvs0c_gdsc,
[MVS1C_GDSC] = &mvs1c_gdsc,
[MVS0_GDSC] = &mvs0_gdsc,
[MVS1_GDSC] = &mvs1_gdsc,
};
static const struct regmap_config video_cc_sm8350_regmap_config = {
.reg_bits = 32,
.reg_stride = 4,
.val_bits = 32,
.max_register = 0x10000,
.fast_io = true,
};
static struct qcom_cc_desc video_cc_sm8350_desc = {
.config = &video_cc_sm8350_regmap_config,
.clks = video_cc_sm8350_clocks,
.num_clks = ARRAY_SIZE(video_cc_sm8350_clocks),
.resets = video_cc_sm8350_resets,
.num_resets = ARRAY_SIZE(video_cc_sm8350_resets),
.gdscs = video_cc_sm8350_gdscs,
.num_gdscs = ARRAY_SIZE(video_cc_sm8350_gdscs),
};
static int video_cc_sm8350_probe(struct platform_device *pdev)
{
struct regmap *regmap;
int ret;
ret = devm_pm_runtime_enable(&pdev->dev);
if (ret)
return ret;
ret = pm_runtime_resume_and_get(&pdev->dev);
if (ret)
return ret;
regmap = qcom_cc_map(pdev, &video_cc_sm8350_desc);
if (IS_ERR(regmap)) {
pm_runtime_put(&pdev->dev);
return PTR_ERR(regmap);
}
clk_lucid_pll_configure(&video_pll0, regmap, &video_pll0_config);
clk_lucid_pll_configure(&video_pll1, regmap, &video_pll1_config);
/*
* Keep clocks always enabled:
* video_cc_ahb_clk
* video_cc_xo_clk
*/
regmap_update_bits(regmap, 0xe58, BIT(0), BIT(0));
regmap_update_bits(regmap, 0xeec, BIT(0), BIT(0));
ret = qcom_cc_really_probe(pdev, &video_cc_sm8350_desc, regmap);
pm_runtime_put(&pdev->dev);
return ret;
}
static const struct of_device_id video_cc_sm8350_match_table[] = {
{ .compatible = "qcom,sm8350-videocc" },
{ }
};
MODULE_DEVICE_TABLE(of, video_cc_sm8350_match_table);
static struct platform_driver video_cc_sm8350_driver = {
.probe = video_cc_sm8350_probe,
.driver = {
.name = "sm8350-videocc",
.of_match_table = video_cc_sm8350_match_table,
},
};
module_platform_driver(video_cc_sm8350_driver);
MODULE_DESCRIPTION("QTI SM8350 VIDEOCC Driver");
MODULE_LICENSE("GPL");
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