pinctrl: sirf: add DT-binding pinmux mapping support
authorBarry Song <Baohua.Song@csr.com>
Thu, 23 Aug 2012 02:47:54 +0000 (10:47 +0800)
committerBarry Song <Barry.Song@csr.com>
Wed, 5 Sep 2012 06:48:10 +0000 (14:48 +0800)
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 <Baohua.Song@csr.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
arch/arm/boot/dts/prima2-evb.dts [new file with mode: 0644]
arch/arm/boot/dts/prima2.dtsi
arch/arm/mach-prima2/Makefile.boot
drivers/pinctrl/pinctrl-sirf.c

diff --git a/arch/arm/boot/dts/prima2-evb.dts b/arch/arm/boot/dts/prima2-evb.dts
new file mode 100644 (file)
index 0000000..57286b4
--- /dev/null
@@ -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>;
+                       };
+               };
+       };
+};
index 1b716aa..055fca5 100644 (file)
                                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 {
index c77a488..98167da 100644 (file)
@@ -1,3 +1,5 @@
 zreladdr-y             += 0x00008000
 params_phys-y          := 0x00000100
 initrd_phys-y          := 0x00800000
+
+dtb-$(CONFIG_ARCH_PRIMA2) += prima2-evb.dtb
index 7fca6ce..304360c 100644 (file)
@@ -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" },
        {}
 };