From: Marek Vasut Date: Sat, 21 Jul 2012 05:02:23 +0000 (+0000) Subject: dm: Move OMAP GPIO driver to drivers/gpio/ X-Git-Tag: v2012.10-rc1~297 X-Git-Url: https://git.sur5r.net/?a=commitdiff_plain;h=308252adaf090335fcc0c8bc8b49668f9d98022f;p=u-boot dm: Move OMAP GPIO driver to drivers/gpio/ Signed-off-by: Marek Vasut Cc: Wolfgang Denk Cc: Albert Aribaud Cc: U-Boot DM Cc: Tom Rini Acked-by: Tom Rini Signed-off-by: Tom Rini --- diff --git a/arch/arm/cpu/armv7/omap-common/Makefile b/arch/arm/cpu/armv7/omap-common/Makefile index 1394c3f0f3..d37b22d98a 100644 --- a/arch/arm/cpu/armv7/omap-common/Makefile +++ b/arch/arm/cpu/armv7/omap-common/Makefile @@ -29,9 +29,6 @@ SOBJS := reset.o COBJS := timer.o COBJS += utils.o -ifneq ($(CONFIG_AM33XX)$(CONFIG_OMAP),) -COBJS += gpio.o -endif ifneq ($(CONFIG_OMAP44XX)$(CONFIG_OMAP54XX),) COBJS += hwinit-common.o diff --git a/arch/arm/cpu/armv7/omap-common/gpio.c b/arch/arm/cpu/armv7/omap-common/gpio.c deleted file mode 100644 index fc89f2a42b..0000000000 --- a/arch/arm/cpu/armv7/omap-common/gpio.c +++ /dev/null @@ -1,243 +0,0 @@ -/* - * Copyright (c) 2009 Wind River Systems, Inc. - * Tom Rix - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, - * MA 02111-1307 USA - * - * This work is derived from the linux 2.6.27 kernel source - * To fetch, use the kernel repository - * git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git - * Use the v2.6.27 tag. - * - * Below is the original's header including its copyright - * - * linux/arch/arm/plat-omap/gpio.c - * - * Support functions for OMAP GPIO - * - * Copyright (C) 2003-2005 Nokia Corporation - * Written by Juha Yrjölä - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ -#include -#include -#include -#include - -#define OMAP_GPIO_DIR_OUT 0 -#define OMAP_GPIO_DIR_IN 1 - -static inline const struct gpio_bank *get_gpio_bank(int gpio) -{ - return &omap_gpio_bank[gpio >> 5]; -} - -static inline int get_gpio_index(int gpio) -{ - return gpio & 0x1f; -} - -static inline int gpio_valid(int gpio) -{ - if (gpio < 0) - return -1; - if (gpio < 192) - return 0; - return -1; -} - -static int check_gpio(int gpio) -{ - if (gpio_valid(gpio) < 0) { - printf("ERROR : check_gpio: invalid GPIO %d\n", gpio); - return -1; - } - return 0; -} - -static void _set_gpio_direction(const struct gpio_bank *bank, int gpio, - int is_input) -{ - void *reg = bank->base; - u32 l; - - switch (bank->method) { - case METHOD_GPIO_24XX: - reg += OMAP_GPIO_OE; - break; - default: - return; - } - l = __raw_readl(reg); - if (is_input) - l |= 1 << gpio; - else - l &= ~(1 << gpio); - __raw_writel(l, reg); -} - -/** - * Get the direction of the GPIO by reading the GPIO_OE register - * corresponding to the specified bank. - */ -static int _get_gpio_direction(const struct gpio_bank *bank, int gpio) -{ - void *reg = bank->base; - u32 v; - - switch (bank->method) { - case METHOD_GPIO_24XX: - reg += OMAP_GPIO_OE; - break; - default: - return -1; - } - - v = __raw_readl(reg); - - if (v & (1 << gpio)) - return OMAP_GPIO_DIR_IN; - else - return OMAP_GPIO_DIR_OUT; -} - -static void _set_gpio_dataout(const struct gpio_bank *bank, int gpio, - int enable) -{ - void *reg = bank->base; - u32 l = 0; - - switch (bank->method) { - case METHOD_GPIO_24XX: - if (enable) - reg += OMAP_GPIO_SETDATAOUT; - else - reg += OMAP_GPIO_CLEARDATAOUT; - l = 1 << gpio; - break; - default: - printf("omap3-gpio unknown bank method %s %d\n", - __FILE__, __LINE__); - return; - } - __raw_writel(l, reg); -} - -/** - * Set value of the specified gpio - */ -int gpio_set_value(unsigned gpio, int value) -{ - const struct gpio_bank *bank; - - if (check_gpio(gpio) < 0) - return -1; - bank = get_gpio_bank(gpio); - _set_gpio_dataout(bank, get_gpio_index(gpio), value); - - return 0; -} - -/** - * Get value of the specified gpio - */ -int gpio_get_value(unsigned gpio) -{ - const struct gpio_bank *bank; - void *reg; - int input; - - if (check_gpio(gpio) < 0) - return -1; - bank = get_gpio_bank(gpio); - reg = bank->base; - switch (bank->method) { - case METHOD_GPIO_24XX: - input = _get_gpio_direction(bank, get_gpio_index(gpio)); - switch (input) { - case OMAP_GPIO_DIR_IN: - reg += OMAP_GPIO_DATAIN; - break; - case OMAP_GPIO_DIR_OUT: - reg += OMAP_GPIO_DATAOUT; - break; - default: - return -1; - } - break; - default: - return -1; - } - return (__raw_readl(reg) - & (1 << get_gpio_index(gpio))) != 0; -} - -/** - * Set gpio direction as input - */ -int gpio_direction_input(unsigned gpio) -{ - const struct gpio_bank *bank; - - if (check_gpio(gpio) < 0) - return -1; - - bank = get_gpio_bank(gpio); - _set_gpio_direction(bank, get_gpio_index(gpio), 1); - - return 0; -} - -/** - * Set gpio direction as output - */ -int gpio_direction_output(unsigned gpio, int value) -{ - const struct gpio_bank *bank; - - if (check_gpio(gpio) < 0) - return -1; - - bank = get_gpio_bank(gpio); - _set_gpio_dataout(bank, get_gpio_index(gpio), value); - _set_gpio_direction(bank, get_gpio_index(gpio), 0); - - return 0; -} - -/** - * Request a gpio before using it. - * - * NOTE: Argument 'label' is unused. - */ -int gpio_request(unsigned gpio, const char *label) -{ - if (check_gpio(gpio) < 0) - return -1; - - return 0; -} - -/** - * Reset and free the gpio after using it. - */ -int gpio_free(unsigned gpio) -{ - return 0; -} diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile index 106549dc2c..c77c631be7 100644 --- a/drivers/gpio/Makefile +++ b/drivers/gpio/Makefile @@ -41,6 +41,7 @@ COBJS-$(CONFIG_DA8XX_GPIO) += da8xx_gpio.o COBJS-$(CONFIG_ALTERA_PIO) += altera_pio.o COBJS-$(CONFIG_MPC83XX_GPIO) += mpc83xx_gpio.o COBJS-$(CONFIG_SH_GPIO_PFC) += sh_pfc.o +COBJS-$(CONFIG_OMAP_GPIO) += omap_gpio.o COBJS := $(COBJS-y) SRCS := $(COBJS:.o=.c) diff --git a/drivers/gpio/omap_gpio.c b/drivers/gpio/omap_gpio.c new file mode 100644 index 0000000000..fc89f2a42b --- /dev/null +++ b/drivers/gpio/omap_gpio.c @@ -0,0 +1,243 @@ +/* + * Copyright (c) 2009 Wind River Systems, Inc. + * Tom Rix + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + * + * This work is derived from the linux 2.6.27 kernel source + * To fetch, use the kernel repository + * git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git + * Use the v2.6.27 tag. + * + * Below is the original's header including its copyright + * + * linux/arch/arm/plat-omap/gpio.c + * + * Support functions for OMAP GPIO + * + * Copyright (C) 2003-2005 Nokia Corporation + * Written by Juha Yrjölä + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#include +#include +#include +#include + +#define OMAP_GPIO_DIR_OUT 0 +#define OMAP_GPIO_DIR_IN 1 + +static inline const struct gpio_bank *get_gpio_bank(int gpio) +{ + return &omap_gpio_bank[gpio >> 5]; +} + +static inline int get_gpio_index(int gpio) +{ + return gpio & 0x1f; +} + +static inline int gpio_valid(int gpio) +{ + if (gpio < 0) + return -1; + if (gpio < 192) + return 0; + return -1; +} + +static int check_gpio(int gpio) +{ + if (gpio_valid(gpio) < 0) { + printf("ERROR : check_gpio: invalid GPIO %d\n", gpio); + return -1; + } + return 0; +} + +static void _set_gpio_direction(const struct gpio_bank *bank, int gpio, + int is_input) +{ + void *reg = bank->base; + u32 l; + + switch (bank->method) { + case METHOD_GPIO_24XX: + reg += OMAP_GPIO_OE; + break; + default: + return; + } + l = __raw_readl(reg); + if (is_input) + l |= 1 << gpio; + else + l &= ~(1 << gpio); + __raw_writel(l, reg); +} + +/** + * Get the direction of the GPIO by reading the GPIO_OE register + * corresponding to the specified bank. + */ +static int _get_gpio_direction(const struct gpio_bank *bank, int gpio) +{ + void *reg = bank->base; + u32 v; + + switch (bank->method) { + case METHOD_GPIO_24XX: + reg += OMAP_GPIO_OE; + break; + default: + return -1; + } + + v = __raw_readl(reg); + + if (v & (1 << gpio)) + return OMAP_GPIO_DIR_IN; + else + return OMAP_GPIO_DIR_OUT; +} + +static void _set_gpio_dataout(const struct gpio_bank *bank, int gpio, + int enable) +{ + void *reg = bank->base; + u32 l = 0; + + switch (bank->method) { + case METHOD_GPIO_24XX: + if (enable) + reg += OMAP_GPIO_SETDATAOUT; + else + reg += OMAP_GPIO_CLEARDATAOUT; + l = 1 << gpio; + break; + default: + printf("omap3-gpio unknown bank method %s %d\n", + __FILE__, __LINE__); + return; + } + __raw_writel(l, reg); +} + +/** + * Set value of the specified gpio + */ +int gpio_set_value(unsigned gpio, int value) +{ + const struct gpio_bank *bank; + + if (check_gpio(gpio) < 0) + return -1; + bank = get_gpio_bank(gpio); + _set_gpio_dataout(bank, get_gpio_index(gpio), value); + + return 0; +} + +/** + * Get value of the specified gpio + */ +int gpio_get_value(unsigned gpio) +{ + const struct gpio_bank *bank; + void *reg; + int input; + + if (check_gpio(gpio) < 0) + return -1; + bank = get_gpio_bank(gpio); + reg = bank->base; + switch (bank->method) { + case METHOD_GPIO_24XX: + input = _get_gpio_direction(bank, get_gpio_index(gpio)); + switch (input) { + case OMAP_GPIO_DIR_IN: + reg += OMAP_GPIO_DATAIN; + break; + case OMAP_GPIO_DIR_OUT: + reg += OMAP_GPIO_DATAOUT; + break; + default: + return -1; + } + break; + default: + return -1; + } + return (__raw_readl(reg) + & (1 << get_gpio_index(gpio))) != 0; +} + +/** + * Set gpio direction as input + */ +int gpio_direction_input(unsigned gpio) +{ + const struct gpio_bank *bank; + + if (check_gpio(gpio) < 0) + return -1; + + bank = get_gpio_bank(gpio); + _set_gpio_direction(bank, get_gpio_index(gpio), 1); + + return 0; +} + +/** + * Set gpio direction as output + */ +int gpio_direction_output(unsigned gpio, int value) +{ + const struct gpio_bank *bank; + + if (check_gpio(gpio) < 0) + return -1; + + bank = get_gpio_bank(gpio); + _set_gpio_dataout(bank, get_gpio_index(gpio), value); + _set_gpio_direction(bank, get_gpio_index(gpio), 0); + + return 0; +} + +/** + * Request a gpio before using it. + * + * NOTE: Argument 'label' is unused. + */ +int gpio_request(unsigned gpio, const char *label) +{ + if (check_gpio(gpio) < 0) + return -1; + + return 0; +} + +/** + * Reset and free the gpio after using it. + */ +int gpio_free(unsigned gpio) +{ + return 0; +} diff --git a/include/configs/am335x_evm.h b/include/configs/am335x_evm.h index 41a3032897..69ab076df9 100644 --- a/include/configs/am335x_evm.h +++ b/include/configs/am335x_evm.h @@ -167,6 +167,8 @@ #define CONFIG_SYS_I2C_EEPROM_ADDR_LEN 2 #define CONFIG_SYS_I2C_MULTI_EEPROMS +#define CONFIG_OMAP_GPIO + #define CONFIG_BAUDRATE 115200 #define CONFIG_SYS_BAUDRATE_TABLE { 110, 300, 600, 1200, 2400, \ 4800, 9600, 14400, 19200, 28800, 38400, 56000, 57600, 115200 } diff --git a/include/configs/cm_t35.h b/include/configs/cm_t35.h index ee4bce5d34..6eeb2d3b7d 100644 --- a/include/configs/cm_t35.h +++ b/include/configs/cm_t35.h @@ -37,6 +37,7 @@ */ #define CONFIG_OMAP /* in a TI OMAP core */ #define CONFIG_OMAP34XX /* which is a 34XX */ +#define CONFIG_OMAP_GPIO #define CONFIG_CM_T3X /* working with CM-T35 and CM-T3730 */ #define CONFIG_SYS_TEXT_BASE 0x80008000 diff --git a/include/configs/devkit8000.h b/include/configs/devkit8000.h index 5df946bf6a..1f44a42810 100644 --- a/include/configs/devkit8000.h +++ b/include/configs/devkit8000.h @@ -36,6 +36,8 @@ #define CONFIG_OMAP34XX 1 /* which is a 34XX */ #define CONFIG_OMAP3_DEVKIT8000 1 /* working with DevKit8000 */ #define CONFIG_MACH_TYPE MACH_TYPE_DEVKIT8000 +#define CONFIG_OMAP_GPIO + /* * 1MB into the SDRAM to allow for SPL's bss at the beginning of SDRAM * 64 bytes before this address should be set aside for u-boot.img's diff --git a/include/configs/dig297.h b/include/configs/dig297.h index 4845d5198a..f123675aad 100644 --- a/include/configs/dig297.h +++ b/include/configs/dig297.h @@ -45,6 +45,7 @@ */ #define CONFIG_OMAP /* in a TI OMAP core */ #define CONFIG_OMAP34XX /* which is a 34XX */ +#define CONFIG_OMAP_GPIO #define CONFIG_SYS_TEXT_BASE 0x80008000 diff --git a/include/configs/igep00x0.h b/include/configs/igep00x0.h index 91e5de65d1..af793e199b 100644 --- a/include/configs/igep00x0.h +++ b/include/configs/igep00x0.h @@ -30,6 +30,7 @@ */ #define CONFIG_OMAP 1 /* in a TI OMAP core */ #define CONFIG_OMAP34XX 1 /* which is a 34XX */ +#define CONFIG_OMAP_GPIO #define CONFIG_SDRC /* The chip has SDRC controller */ diff --git a/include/configs/mcx.h b/include/configs/mcx.h index ad7078c0f5..c14cb851c5 100644 --- a/include/configs/mcx.h +++ b/include/configs/mcx.h @@ -27,6 +27,7 @@ #define CONFIG_OMAP /* in a TI OMAP core */ #define CONFIG_OMAP34XX /* which is a 34XX */ #define CONFIG_OMAP3_MCX /* working with mcx */ +#define CONFIG_OMAP_GPIO #define MACH_TYPE_MCX 3656 #define CONFIG_MACH_TYPE MACH_TYPE_MCX diff --git a/include/configs/omap3_beagle.h b/include/configs/omap3_beagle.h index 6e2a4ec6ce..e974824191 100644 --- a/include/configs/omap3_beagle.h +++ b/include/configs/omap3_beagle.h @@ -34,6 +34,7 @@ #define CONFIG_OMAP 1 /* in a TI OMAP core */ #define CONFIG_OMAP34XX 1 /* which is a 34XX */ #define CONFIG_OMAP3_BEAGLE 1 /* working with BEAGLE */ +#define CONFIG_OMAP_GPIO #define CONFIG_SDRC /* The chip has SDRC controller */ diff --git a/include/configs/omap3_evm_common.h b/include/configs/omap3_evm_common.h index 20192a90a7..b12ce2e4d9 100644 --- a/include/configs/omap3_evm_common.h +++ b/include/configs/omap3_evm_common.h @@ -22,6 +22,7 @@ */ #define CONFIG_OMAP /* This is TI OMAP core */ #define CONFIG_OMAP34XX /* belonging to 34XX family */ +#define CONFIG_OMAP_GPIO #define CONFIG_SDRC /* The chip has SDRC controller */ diff --git a/include/configs/omap3_logic.h b/include/configs/omap3_logic.h index 2e1e6b901d..6d4faed085 100644 --- a/include/configs/omap3_logic.h +++ b/include/configs/omap3_logic.h @@ -33,6 +33,7 @@ #define CONFIG_OMAP /* in a TI OMAP core */ #define CONFIG_OMAP34XX /* which is a 34XX */ #define CONFIG_OMAP3_LOGIC /* working with Logic OMAP boards */ +#define CONFIG_OMAP_GPIO #undef CONFIG_USE_IRQ /* no support for IRQs */ diff --git a/include/configs/omap3_mvblx.h b/include/configs/omap3_mvblx.h index 6a1304681a..30ca312931 100644 --- a/include/configs/omap3_mvblx.h +++ b/include/configs/omap3_mvblx.h @@ -39,6 +39,7 @@ #define CONFIG_OMAP34XX 1 /* which is a 34XX */ #define CONFIG_MVBLX 1 /* working with mvBlueLYNX-X */ #define CONFIG_MACH_TYPE MACH_TYPE_MVBLX +#define CONFIG_OMAP_GPIO #define CONFIG_SDRC /* The chip has SDRC controller */ diff --git a/include/configs/omap3_overo.h b/include/configs/omap3_overo.h index 15f67fcafd..92bd8fcafc 100644 --- a/include/configs/omap3_overo.h +++ b/include/configs/omap3_overo.h @@ -25,6 +25,7 @@ #define CONFIG_OMAP /* in a TI OMAP core */ #define CONFIG_OMAP34XX /* which is a 34XX */ #define CONFIG_OMAP3_OVERO /* working with overo */ +#define CONFIG_OMAP_GPIO #define CONFIG_SDRC /* The chip has SDRC controller */ diff --git a/include/configs/omap3_pandora.h b/include/configs/omap3_pandora.h index 604b53d3cb..28f8a3ee42 100644 --- a/include/configs/omap3_pandora.h +++ b/include/configs/omap3_pandora.h @@ -29,6 +29,7 @@ #define CONFIG_OMAP 1 /* in a TI OMAP core */ #define CONFIG_OMAP34XX 1 /* which is a 34XX */ #define CONFIG_OMAP3_PANDORA 1 /* working with pandora */ +#define CONFIG_OMAP_GPIO #define CONFIG_SDRC /* The chip has SDRC controller */ diff --git a/include/configs/omap3_zoom2.h b/include/configs/omap3_zoom2.h index b60ece3c53..98b93f8c76 100644 --- a/include/configs/omap3_zoom2.h +++ b/include/configs/omap3_zoom2.h @@ -36,6 +36,7 @@ #define CONFIG_OMAP 1 /* in a TI OMAP core */ #define CONFIG_OMAP34XX 1 /* which is a 34XX */ #define CONFIG_OMAP3_ZOOM2 1 /* working with Zoom II */ +#define CONFIG_OMAP_GPIO #define CONFIG_SDRC /* The chip has SDRC controller */ diff --git a/include/configs/omap4_common.h b/include/configs/omap4_common.h index b2e5cc6b72..6f298a1f7d 100644 --- a/include/configs/omap4_common.h +++ b/include/configs/omap4_common.h @@ -35,6 +35,7 @@ #define CONFIG_OMAP 1 /* in a TI OMAP core */ #define CONFIG_OMAP44XX 1 /* which is a 44XX */ #define CONFIG_OMAP4430 1 /* which is in a 4430 */ +#define CONFIG_OMAP_GPIO /* Get CPU defs */ #include diff --git a/include/configs/omap5_evm.h b/include/configs/omap5_evm.h index c5874bbf67..088428035d 100644 --- a/include/configs/omap5_evm.h +++ b/include/configs/omap5_evm.h @@ -38,6 +38,7 @@ #define CONFIG_OMAP54XX /* which is a 54XX */ #define CONFIG_OMAP5430 /* which is in a 5430 */ #define CONFIG_5430EVM /* working with EVM */ +#define CONFIG_OMAP_GPIO /* Get CPU defs */ #include diff --git a/include/configs/tam3517-common.h b/include/configs/tam3517-common.h index 0751a9cbca..24f6f7e952 100644 --- a/include/configs/tam3517-common.h +++ b/include/configs/tam3517-common.h @@ -27,6 +27,7 @@ */ #define CONFIG_OMAP /* in a TI OMAP core */ #define CONFIG_OMAP34XX /* which is a 34XX */ +#define CONFIG_OMAP_GPIO #define CONFIG_SYS_TEXT_BASE 0x80008000