pinctrl: Add SPEAr3xx pinctrl drivers

This adds pinctrl driver for SPEAr3xx family. SPEAr3xx family supports three
families: SPEAr300, SPEAr310 and SPEAr320.

Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Stephen Warren <swarren@wwwdotorg.org>

Documentation/devicetree/bindings/pinctrl/pinctrl_spear.txt

@@ -0,0 +1,108 @@
+ST Microelectronics, SPEAr pinmux controller
+
+Required properties:
+- compatible	: "st,spear300-pinmux"
+		: "st,spear310-pinmux"
+		: "st,spear320-pinmux"
+- reg		: Address range of the pinctrl registers
+- st,pinmux-mode: Mandatory for SPEAr300 and SPEAr320 and invalid for others.
+	- Its values for SPEAr300:
+		- NAND_MODE		: <0>
+		- NOR_MODE		: <1>
+		- PHOTO_FRAME_MODE	: <2>
+		- LEND_IP_PHONE_MODE	: <3>
+		- HEND_IP_PHONE_MODE	: <4>
+		- LEND_WIFI_PHONE_MODE	: <5>
+		- HEND_WIFI_PHONE_MODE	: <6>
+		- ATA_PABX_WI2S_MODE	: <7>
+		- ATA_PABX_I2S_MODE	: <8>
+		- CAML_LCDW_MODE	: <9>
+		- CAMU_LCD_MODE		: <10>
+		- CAMU_WLCD_MODE	: <11>
+		- CAML_LCD_MODE		: <12>
+	- Its values for SPEAr320:
+		- AUTO_NET_SMII_MODE	: <0>
+		- AUTO_NET_MII_MODE	: <1>
+		- AUTO_EXP_MODE		: <2>
+		- SMALL_PRINTERS_MODE	: <3>
+		- EXTENDED_MODE		: <4>
+
+Please refer to pinctrl-bindings.txt in this directory for details of the common
+pinctrl bindings used by client devices.
+
+SPEAr's pinmux nodes act as a container for an abitrary number of subnodes. Each
+of these subnodes represents muxing for a pin, a group, or a list of pins or
+groups.
+
+The name of each subnode is not important; all subnodes should be enumerated
+and processed purely based on their content.
+
+Required subnode-properties:
+- st,pins : An array of strings. Each string contains the name of a pin or
+  group.
+- st,function: A string containing the name of the function to mux to the pin or
+  group. See the SPEAr's TRM to determine which are valid for each pin or group.
+
+  Valid values for group and function names can be found from looking at the
+  group and function arrays in driver files:
+  drivers/pinctrl/spear/pinctrl-spear3*0.c
+
+Valid values for group names are:
+For All SPEAr3xx machines:
+	"firda_grp", "i2c0_grp", "ssp_cs_grp", "ssp0_grp", "mii0_grp",
+	"gpio0_pin0_grp", "gpio0_pin1_grp", "gpio0_pin2_grp", "gpio0_pin3_grp",
+	"gpio0_pin4_grp", "gpio0_pin5_grp", "uart0_ext_grp", "uart0_grp",
+	"timer_0_1_grp", timer_0_1_pins, "timer_2_3_grp"
+
+For SPEAr300 machines:
+	"fsmc_2chips_grp", "fsmc_4chips_grp", "clcd_lcdmode_grp",
+	"clcd_pfmode_grp", "tdm_grp", "i2c_clk_grp_grp", "caml_grp", "camu_grp",
+	"dac_grp", "i2s_grp", "sdhci_4bit_grp", "sdhci_8bit_grp",
+	"gpio1_0_to_3_grp", "gpio1_4_to_7_grp"
+
+For SPEAr310 machines:
+	"emi_cs_0_to_5_grp", "uart1_grp", "uart2_grp", "uart3_grp", "uart4_grp",
+	"uart5_grp", "fsmc_grp", "rs485_0_grp", "rs485_1_grp", "tdm_grp"
+
+For SPEAr320 machines:
+	"clcd_grp", "emi_grp", "fsmc_8bit_grp", "fsmc_16bit_grp", "spp_grp",
+	"sdhci_led_grp", "sdhci_cd_12_grp", "sdhci_cd_51_grp", "i2s_grp",
+	"uart1_grp", "uart1_modem_2_to_7_grp", "uart1_modem_31_to_36_grp",
+	"uart1_modem_34_to_45_grp", "uart1_modem_80_to_85_grp", "uart2_grp",
+	"uart3_8_9_grp", "uart3_15_16_grp", "uart3_41_42_grp",
+	"uart3_52_53_grp", "uart3_73_74_grp", "uart3_94_95_grp",
+	"uart3_98_99_grp", "uart4_6_7_grp", "uart4_13_14_grp",
+	"uart4_39_40_grp", "uart4_71_72_grp", "uart4_92_93_grp",
+	"uart4_100_101_grp", "uart5_4_5_grp", "uart5_37_38_grp",
+	"uart5_69_70_grp", "uart5_90_91_grp", "uart6_2_3_grp",
+	"uart6_88_89_grp", "rs485_grp", "touchscreen_grp", "can0_grp",
+	"can1_grp", "pwm0_1_pin_8_9_grp", "pwm0_1_pin_14_15_grp",
+	"pwm0_1_pin_30_31_grp", "pwm0_1_pin_37_38_grp", "pwm0_1_pin_42_43_grp",
+	"pwm0_1_pin_59_60_grp", "pwm0_1_pin_88_89_grp", "pwm2_pin_7_grp",
+	"pwm2_pin_13_grp", "pwm2_pin_29_grp", "pwm2_pin_34_grp",
+	"pwm2_pin_41_grp", "pwm2_pin_58_grp", "pwm2_pin_87_grp",
+	"pwm3_pin_6_grp", "pwm3_pin_12_grp", "pwm3_pin_28_grp",
+	"pwm3_pin_40_grp", "pwm3_pin_57_grp", "pwm3_pin_86_grp",
+	"ssp1_17_20_grp", "ssp1_36_39_grp", "ssp1_48_51_grp", "ssp1_65_68_grp",
+	"ssp1_94_97_grp", "ssp2_13_16_grp", "ssp2_32_35_grp", "ssp2_44_47_grp",
+	"ssp2_61_64_grp", "ssp2_90_93_grp", "mii2_grp", "smii0_1_grp",
+	"rmii0_1_grp", "i2c1_8_9_grp", "i2c1_98_99_grp", "i2c2_0_1_grp",
+	"i2c2_2_3_grp", "i2c2_19_20_grp", "i2c2_75_76_grp", "i2c2_96_97_grp"
+
+Valid values for function names are:
+For All SPEAr3xx machines:
+	"firda", "i2c0", "ssp_cs", "ssp0", "mii0", "gpio0", "uart0_ext",
+	"uart0", "timer_0_1", "timer_2_3"
+
+For SPEAr300 machines:
+	"fsmc", "clcd", "tdm", "i2c1", "cam", "dac", "i2s", "sdhci", "gpio1"
+
+For SPEAr310 machines:
+	"emi", "uart1", "uart2", "uart3", "uart4", "uart5", "fsmc", "rs485_0",
+	"rs485_1", "tdm"
+
+For SPEAr320 machines:
+	"clcd", "emi", "fsmc", "spp", "sdhci", "i2s", "uart1", "uart1_modem",
+	"uart2", "uart3", "uart4", "uart5", "uart6", "rs485", "touchscreen",
+	"can0", "can1", "pwm0_1", "pwm2", "pwm3", "ssp1", "ssp2", "mii2",
+	"mii0_1", "i2c1", "i2c2"

drivers/pinctrl/spear/Kconfig

@@ -11,4 +11,24 @@ config PINCTRL_SPEAR
 	help
 	  This enables pin control drivers for SPEAr Platform
 
+config PINCTRL_SPEAR3XX
+	bool
+	depends on ARCH_SPEAR3XX
+	select PINCTRL_SPEAR
+
+config PINCTRL_SPEAR300
+	bool "ST Microelectronics SPEAr300 SoC pin controller driver"
+	depends on MACH_SPEAR300
+	select PINCTRL_SPEAR3XX
+
+config PINCTRL_SPEAR310
+	bool "ST Microelectronics SPEAr310 SoC pin controller driver"
+	depends on MACH_SPEAR310
+	select PINCTRL_SPEAR3XX
+
+config PINCTRL_SPEAR320
+	bool "ST Microelectronics SPEAr320 SoC pin controller driver"
+	depends on MACH_SPEAR320
+	select PINCTRL_SPEAR3XX
+
 endif

drivers/pinctrl/spear/Makefile

@@ -1,3 +1,7 @@
 # SPEAr pinmux support
 
 obj-$(CONFIG_PINCTRL_SPEAR)	+= pinctrl-spear.o
+obj-$(CONFIG_PINCTRL_SPEAR3XX)	+= pinctrl-spear3xx.o
+obj-$(CONFIG_PINCTRL_SPEAR300)	+= pinctrl-spear300.o
+obj-$(CONFIG_PINCTRL_SPEAR310)	+= pinctrl-spear310.o
+obj-$(CONFIG_PINCTRL_SPEAR320)	+= pinctrl-spear320.o