[PATCH 3/3] pinctrl: sirf: add DT-binding pinmux mapping support
Barry Song
Barry.Song at csr.com
Wed Aug 22 22:47:54 EDT 2012
From: Barry Song <Baohua.Song at csr.com>
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 <Barry.Song at csr.com>
---
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 0000000..57286b4
--- /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 at b0060000 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&uart1_pins_a>;
+ };
+ spi at b00d0000 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&spi0_pins_a>;
+ };
+ spi at 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 1b716aa..055fca5 100644
--- a/arch/arm/boot/dts/prima2.dtsi
+++ b/arch/arm/boot/dts/prima2.dtsi
@@ -277,14 +277,231 @@
interrupts = <33>;
};
- gpio: gpio-controller at b0120000 {
+ gpio: pinctrl at 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 at 0 {
+ lcd {
+ sirf,pins = "lcd_16bitsgrp";
+ sirf,function = "lcd_16bits";
+ };
+ };
+ lcd_18pins_a: lcd0 at 1 {
+ lcd {
+ sirf,pins = "lcd_18bitsgrp";
+ sirf,function = "lcd_18bits";
+ };
+ };
+ lcd_24pins_a: lcd0 at 2 {
+ lcd {
+ sirf,pins = "lcd_24bitsgrp";
+ sirf,function = "lcd_24bits";
+ };
+ };
+ lcdrom_pins_a: lcdrom0 at 0 {
+ lcd {
+ sirf,pins = "lcdromgrp";
+ sirf,function = "lcdrom";
+ };
+ };
+ uart0_pins_a: uart0 at 0 {
+ uart {
+ sirf,pins = "uart0grp";
+ sirf,function = "uart0";
+ };
+ };
+ uart1_pins_a: uart1 at 0 {
+ uart {
+ sirf,pins = "uart1grp";
+ sirf,function = "uart1";
+ };
+ };
+ uart2_pins_a: uart2 at 0 {
+ uart {
+ sirf,pins = "uart2grp";
+ sirf,function = "uart2";
+ };
+ };
+ uart2_noflow_pins_a: uart2 at 1 {
+ uart {
+ sirf,pins = "uart2_nostreamctrlgrp";
+ sirf,function = "uart2_nostreamctrl";
+ };
+ };
+ spi0_pins_a: spi0 at 0 {
+ spi {
+ sirf,pins = "spi0grp";
+ sirf,function = "spi0";
+ };
+ };
+ spi1_pins_a: spi1 at 0 {
+ spi {
+ sirf,pins = "spi1grp";
+ sirf,function = "spi1";
+ };
+ };
+ i2c0_pins_a: i2c0 at 0 {
+ i2c {
+ sirf,pins = "i2c0grp";
+ sirf,function = "i2c0";
+ };
+ };
+ i2c1_pins_a: i2c1 at 0 {
+ i2c {
+ sirf,pins = "i2c1grp";
+ sirf,function = "i2c1";
+ };
+ };
+ pwm0_pins_a: pwm0 at 0 {
+ pwm {
+ sirf,pins = "pwm0grp";
+ sirf,function = "pwm0";
+ };
+ };
+ pwm1_pins_a: pwm1 at 0 {
+ pwm {
+ sirf,pins = "pwm1grp";
+ sirf,function = "pwm1";
+ };
+ };
+ pwm2_pins_a: pwm2 at 0 {
+ pwm {
+ sirf,pins = "pwm2grp";
+ sirf,function = "pwm2";
+ };
+ };
+ pwm3_pins_a: pwm3 at 0 {
+ pwm {
+ sirf,pins = "pwm3grp";
+ sirf,function = "pwm3";
+ };
+ };
+ gps_pins_a: gps at 0 {
+ gps {
+ sirf,pins = "gpsgrp";
+ sirf,function = "gps";
+ };
+ };
+ vip_pins_a: vip at 0 {
+ vip {
+ sirf,pins = "vipgrp";
+ sirf,function = "vip";
+ };
+ };
+ sdmmc0_pins_a: sdmmc0 at 0 {
+ sdmmc0 {
+ sirf,pins = "sdmmc0grp";
+ sirf,function = "sdmmc0";
+ };
+ };
+ sdmmc1_pins_a: sdmmc1 at 0 {
+ sdmmc1 {
+ sirf,pins = "sdmmc1grp";
+ sirf,function = "sdmmc1";
+ };
+ };
+ sdmmc2_pins_a: sdmmc2 at 0 {
+ sdmmc2 {
+ sirf,pins = "sdmmc2grp";
+ sirf,function = "sdmmc2";
+ };
+ };
+ sdmmc3_pins_a: sdmmc3 at 0 {
+ sdmmc3 {
+ sirf,pins = "sdmmc3grp";
+ sirf,function = "sdmmc3";
+ };
+ };
+ sdmmc4_pins_a: sdmmc4 at 0 {
+ sdmmc4 {
+ sirf,pins = "sdmmc4grp";
+ sirf,function = "sdmmc4";
+ };
+ };
+ sdmmc5_pins_a: sdmmc5 at 0 {
+ sdmmc5 {
+ sirf,pins = "sdmmc5grp";
+ sirf,function = "sdmmc5";
+ };
+ };
+ i2s_pins_a: i2s at 0 {
+ i2s {
+ sirf,pins = "i2sgrp";
+ sirf,function = "i2s";
+ };
+ };
+ ac97_pins_a: ac97 at 0 {
+ ac97 {
+ sirf,pins = "ac97grp";
+ sirf,function = "ac97";
+ };
+ };
+ nand_pins_a: nand at 0 {
+ nand {
+ sirf,pins = "nandgrp";
+ sirf,function = "nand";
+ };
+ };
+ usp0_pins_a: usp0 at 0 {
+ usp0 {
+ sirf,pins = "usp0grp";
+ sirf,function = "usp0";
+ };
+ };
+ usp1_pins_a: usp1 at 0 {
+ usp1 {
+ sirf,pins = "usp1grp";
+ sirf,function = "usp1";
+ };
+ };
+ usp2_pins_a: usp2 at 0 {
+ usp2 {
+ sirf,pins = "usp2grp";
+ sirf,function = "usp2";
+ };
+ };
+ usb0_utmi_drvbus_pins_a: usb0_utmi_drvbus at 0 {
+ usb0_utmi_drvbus {
+ sirf,pins = "usb0_utmi_drvbusgrp";
+ sirf,function = "usb0_utmi_drvbus";
+ };
+ };
+ usb1_utmi_drvbus_pins_a: usb1_utmi_drvbus at 0 {
+ usb1_utmi_drvbus {
+ sirf,pins = "usb1_utmi_drvbusgrp";
+ sirf,function = "usb1_utmi_drvbus";
+ };
+ };
+ warm_rst_pins_a: warm_rst at 0 {
+ warm_rst {
+ sirf,pins = "warm_rstgrp";
+ sirf,function = "warm_rst";
+ };
+ };
+ pulse_count_pins_a: pulse_count at 0 {
+ pulse_count {
+ sirf,pins = "pulse_countgrp";
+ sirf,function = "pulse_count";
+ };
+ };
+ cko0_rst_pins_a: cko0_rst at 0 {
+ cko0_rst {
+ sirf,pins = "cko0_rstgrp";
+ sirf,function = "cko0_rst";
+ };
+ };
+ cko1_rst_pins_a: cko1_rst at 0 {
+ cko1_rst {
+ sirf,pins = "cko1_rstgrp";
+ sirf,function = "cko1_rst";
+ };
+ };
};
pwm at b0130000 {
diff --git a/arch/arm/mach-prima2/Makefile.boot b/arch/arm/mach-prima2/Makefile.boot
index c77a488..98167da 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 7fca6ce..304360c 100644
--- a/drivers/pinctrl/pinctrl-sirf.c
+++ b/drivers/pinctrl/pinctrl-sirf.c
@@ -17,6 +17,7 @@
#include <linux/pinctrl/pinctrl.h>
#include <linux/pinctrl/pinmux.h>
#include <linux/pinctrl/consumer.h>
+#include <linux/pinctrl/machine.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/of_device.h>
@@ -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" },
{}
};
--
1.7.0.4
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