From 056876f6c73406c06d530d16d020177f5ec4a0bd Mon Sep 17 00:00:00 2001 From: Barry Song Date: Thu, 23 Aug 2012 10:47:54 +0800 Subject: [PATCH] pinctrl: sirf: add DT-binding pinmux mapping support This makes us possible to define pinmux mapping in board-specific DTS. prima2.dtsi provides all possible (groups,functions) configuration, and device in .dts select configurations from dtsi files. Signed-off-by: Barry Song Acked-by: Linus Walleij --- arch/arm/boot/dts/prima2-evb.dts | 37 +++++ arch/arm/boot/dts/prima2.dtsi | 221 ++++++++++++++++++++++++++++- arch/arm/mach-prima2/Makefile.boot | 2 + drivers/pinctrl/pinctrl-sirf.c | 58 +++++++- 4 files changed, 315 insertions(+), 3 deletions(-) create mode 100644 arch/arm/boot/dts/prima2-evb.dts diff --git a/arch/arm/boot/dts/prima2-evb.dts b/arch/arm/boot/dts/prima2-evb.dts new file mode 100644 index 000000000000..57286b4e7b87 --- /dev/null +++ b/arch/arm/boot/dts/prima2-evb.dts @@ -0,0 +1,37 @@ +/* + * DTS file for CSR SiRFprimaII Evaluation Board + * + * Copyright (c) 2012 Cambridge Silicon Radio Limited, a CSR plc group company. + * + * Licensed under GPLv2 or later. + */ + +/dts-v1/; + +/include/ "prima2.dtsi" + +/ { + model = "CSR SiRFprimaII Evaluation Board"; + compatible = "sirf,prima2", "sirf,prima2-cb"; + + memory { + reg = <0x00000000 0x20000000>; + }; + + axi { + peri-iobg { + uart@b0060000 { + pinctrl-names = "default"; + pinctrl-0 = <&uart1_pins_a>; + }; + spi@b00d0000 { + pinctrl-names = "default"; + pinctrl-0 = <&spi0_pins_a>; + }; + spi@b0170000 { + pinctrl-names = "default"; + pinctrl-0 = <&spi1_pins_a>; + }; + }; + }; +}; diff --git a/arch/arm/boot/dts/prima2.dtsi b/arch/arm/boot/dts/prima2.dtsi index 1b716aae64f7..055fca542120 100644 --- a/arch/arm/boot/dts/prima2.dtsi +++ b/arch/arm/boot/dts/prima2.dtsi @@ -277,14 +277,231 @@ interrupts = <33>; }; - gpio: gpio-controller@b0120000 { + gpio: pinctrl@b0120000 { #gpio-cells = <2>; #interrupt-cells = <2>; - compatible = "sirf,prima2-gpio-pinmux"; + compatible = "sirf,prima2-pinctrl"; reg = <0xb0120000 0x10000>; interrupts = <43 44 45 46 47>; gpio-controller; interrupt-controller; + + lcd_16pins_a: lcd0@0 { + lcd { + sirf,pins = "lcd_16bitsgrp"; + sirf,function = "lcd_16bits"; + }; + }; + lcd_18pins_a: lcd0@1 { + lcd { + sirf,pins = "lcd_18bitsgrp"; + sirf,function = "lcd_18bits"; + }; + }; + lcd_24pins_a: lcd0@2 { + lcd { + sirf,pins = "lcd_24bitsgrp"; + sirf,function = "lcd_24bits"; + }; + }; + lcdrom_pins_a: lcdrom0@0 { + lcd { + sirf,pins = "lcdromgrp"; + sirf,function = "lcdrom"; + }; + }; + uart0_pins_a: uart0@0 { + uart { + sirf,pins = "uart0grp"; + sirf,function = "uart0"; + }; + }; + uart1_pins_a: uart1@0 { + uart { + sirf,pins = "uart1grp"; + sirf,function = "uart1"; + }; + }; + uart2_pins_a: uart2@0 { + uart { + sirf,pins = "uart2grp"; + sirf,function = "uart2"; + }; + }; + uart2_noflow_pins_a: uart2@1 { + uart { + sirf,pins = "uart2_nostreamctrlgrp"; + sirf,function = "uart2_nostreamctrl"; + }; + }; + spi0_pins_a: spi0@0 { + spi { + sirf,pins = "spi0grp"; + sirf,function = "spi0"; + }; + }; + spi1_pins_a: spi1@0 { + spi { + sirf,pins = "spi1grp"; + sirf,function = "spi1"; + }; + }; + i2c0_pins_a: i2c0@0 { + i2c { + sirf,pins = "i2c0grp"; + sirf,function = "i2c0"; + }; + }; + i2c1_pins_a: i2c1@0 { + i2c { + sirf,pins = "i2c1grp"; + sirf,function = "i2c1"; + }; + }; + pwm0_pins_a: pwm0@0 { + pwm { + sirf,pins = "pwm0grp"; + sirf,function = "pwm0"; + }; + }; + pwm1_pins_a: pwm1@0 { + pwm { + sirf,pins = "pwm1grp"; + sirf,function = "pwm1"; + }; + }; + pwm2_pins_a: pwm2@0 { + pwm { + sirf,pins = "pwm2grp"; + sirf,function = "pwm2"; + }; + }; + pwm3_pins_a: pwm3@0 { + pwm { + sirf,pins = "pwm3grp"; + sirf,function = "pwm3"; + }; + }; + gps_pins_a: gps@0 { + gps { + sirf,pins = "gpsgrp"; + sirf,function = "gps"; + }; + }; + vip_pins_a: vip@0 { + vip { + sirf,pins = "vipgrp"; + sirf,function = "vip"; + }; + }; + sdmmc0_pins_a: sdmmc0@0 { + sdmmc0 { + sirf,pins = "sdmmc0grp"; + sirf,function = "sdmmc0"; + }; + }; + sdmmc1_pins_a: sdmmc1@0 { + sdmmc1 { + sirf,pins = "sdmmc1grp"; + sirf,function = "sdmmc1"; + }; + }; + sdmmc2_pins_a: sdmmc2@0 { + sdmmc2 { + sirf,pins = "sdmmc2grp"; + sirf,function = "sdmmc2"; + }; + }; + sdmmc3_pins_a: sdmmc3@0 { + sdmmc3 { + sirf,pins = "sdmmc3grp"; + sirf,function = "sdmmc3"; + }; + }; + sdmmc4_pins_a: sdmmc4@0 { + sdmmc4 { + sirf,pins = "sdmmc4grp"; + sirf,function = "sdmmc4"; + }; + }; + sdmmc5_pins_a: sdmmc5@0 { + sdmmc5 { + sirf,pins = "sdmmc5grp"; + sirf,function = "sdmmc5"; + }; + }; + i2s_pins_a: i2s@0 { + i2s { + sirf,pins = "i2sgrp"; + sirf,function = "i2s"; + }; + }; + ac97_pins_a: ac97@0 { + ac97 { + sirf,pins = "ac97grp"; + sirf,function = "ac97"; + }; + }; + nand_pins_a: nand@0 { + nand { + sirf,pins = "nandgrp"; + sirf,function = "nand"; + }; + }; + usp0_pins_a: usp0@0 { + usp0 { + sirf,pins = "usp0grp"; + sirf,function = "usp0"; + }; + }; + usp1_pins_a: usp1@0 { + usp1 { + sirf,pins = "usp1grp"; + sirf,function = "usp1"; + }; + }; + usp2_pins_a: usp2@0 { + usp2 { + sirf,pins = "usp2grp"; + sirf,function = "usp2"; + }; + }; + usb0_utmi_drvbus_pins_a: usb0_utmi_drvbus@0 { + usb0_utmi_drvbus { + sirf,pins = "usb0_utmi_drvbusgrp"; + sirf,function = "usb0_utmi_drvbus"; + }; + }; + usb1_utmi_drvbus_pins_a: usb1_utmi_drvbus@0 { + usb1_utmi_drvbus { + sirf,pins = "usb1_utmi_drvbusgrp"; + sirf,function = "usb1_utmi_drvbus"; + }; + }; + warm_rst_pins_a: warm_rst@0 { + warm_rst { + sirf,pins = "warm_rstgrp"; + sirf,function = "warm_rst"; + }; + }; + pulse_count_pins_a: pulse_count@0 { + pulse_count { + sirf,pins = "pulse_countgrp"; + sirf,function = "pulse_count"; + }; + }; + cko0_rst_pins_a: cko0_rst@0 { + cko0_rst { + sirf,pins = "cko0_rstgrp"; + sirf,function = "cko0_rst"; + }; + }; + cko1_rst_pins_a: cko1_rst@0 { + cko1_rst { + sirf,pins = "cko1_rstgrp"; + sirf,function = "cko1_rst"; + }; + }; }; pwm@b0130000 { diff --git a/arch/arm/mach-prima2/Makefile.boot b/arch/arm/mach-prima2/Makefile.boot index c77a4883a4ee..98167da874c9 100644 --- a/arch/arm/mach-prima2/Makefile.boot +++ b/arch/arm/mach-prima2/Makefile.boot @@ -1,3 +1,5 @@ zreladdr-y += 0x00008000 params_phys-y := 0x00000100 initrd_phys-y := 0x00800000 + +dtb-$(CONFIG_ARCH_PRIMA2) += prima2-evb.dtb diff --git a/drivers/pinctrl/pinctrl-sirf.c b/drivers/pinctrl/pinctrl-sirf.c index 7fca6ce5952b..304360cd213e 100644 --- a/drivers/pinctrl/pinctrl-sirf.c +++ b/drivers/pinctrl/pinctrl-sirf.c @@ -17,6 +17,7 @@ #include #include #include +#include #include #include #include @@ -916,11 +917,66 @@ static void sirfsoc_pin_dbg_show(struct pinctrl_dev *pctldev, struct seq_file *s seq_printf(s, " " DRIVER_NAME); } +static int sirfsoc_dt_node_to_map(struct pinctrl_dev *pctldev, + struct device_node *np_config, + struct pinctrl_map **map, unsigned *num_maps) +{ + struct sirfsoc_pmx *spmx = pinctrl_dev_get_drvdata(pctldev); + struct device_node *np; + struct property *prop; + const char *function, *group; + int ret, index = 0, count = 0; + + /* calculate number of maps required */ + for_each_child_of_node(np_config, np) { + ret = of_property_read_string(np, "sirf,function", &function); + if (ret < 0) + return ret; + + ret = of_property_count_strings(np, "sirf,pins"); + if (ret < 0) + return ret; + + count += ret; + } + + if (!count) { + dev_err(spmx->dev, "No child nodes passed via DT\n"); + return -ENODEV; + } + + *map = kzalloc(sizeof(**map) * count, GFP_KERNEL); + if (!*map) + return -ENOMEM; + + for_each_child_of_node(np_config, np) { + of_property_read_string(np, "sirf,function", &function); + of_property_for_each_string(np, "sirf,pins", prop, group) { + (*map)[index].type = PIN_MAP_TYPE_MUX_GROUP; + (*map)[index].data.mux.group = group; + (*map)[index].data.mux.function = function; + index++; + } + } + + *num_maps = count; + + return 0; +} + +static void sirfsoc_dt_free_map(struct pinctrl_dev *pctldev, + struct pinctrl_map *map, unsigned num_maps) +{ + kfree(map); +} + static struct pinctrl_ops sirfsoc_pctrl_ops = { .get_groups_count = sirfsoc_get_groups_count, .get_group_name = sirfsoc_get_group_name, .get_group_pins = sirfsoc_get_group_pins, .pin_dbg_show = sirfsoc_pin_dbg_show, + .dt_node_to_map = sirfsoc_dt_node_to_map, + .dt_free_map = sirfsoc_dt_free_map, }; struct sirfsoc_pmx_func { @@ -1221,7 +1277,7 @@ out_no_gpio_remap: } static const struct of_device_id pinmux_ids[] __devinitconst = { - { .compatible = "sirf,prima2-gpio-pinmux" }, + { .compatible = "sirf,prima2-pinctrl" }, {} };