/* arch/arm/plat-s3c64xx/gpiolib.c * * Copyright 2008 Openmoko, Inc. * Copyright 2008 Simtec Electronics * Ben Dooks <ben@simtec.co.uk> * http://armlinux.simtec.co.uk/ * * S3C64XX - GPIOlib support * * 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 <linux/kernel.h> #include <linux/irq.h> #include <linux/io.h> #include <linux/gpio.h> #include <mach/map.h> #include <plat/gpio-core.h> #include <plat/gpio-cfg.h> #include <plat/gpio-cfg-helpers.h> #include <mach/regs-gpio.h> /* GPIO bank summary: * * Bank GPIOs Style SlpCon ExtInt Group * A 8 4Bit Yes 1 * B 7 4Bit Yes 1 * C 8 4Bit Yes 2 * D 5 4Bit Yes 3 * E 5 4Bit Yes None * F 16 2Bit Yes 4 [1] * G 7 4Bit Yes 5 * H 10 4Bit[2] Yes 6 * I 16 2Bit Yes None * J 12 2Bit Yes None * K 16 4Bit[2] No None * L 15 4Bit[2] No None * M 6 4Bit No IRQ_EINT * N 16 2Bit No IRQ_EINT * O 16 2Bit Yes 7 * P 15 2Bit Yes 8 * Q 9 2Bit Yes 9 * * [1] BANKF pins 14,15 do not form part of the external interrupt sources * [2] BANK has two control registers, GPxCON0 and GPxCON1 */ static struct s3c_gpio_cfg gpio_4bit_cfg_noint = { .set_config = s3c_gpio_setcfg_s3c64xx_4bit, .get_config = s3c_gpio_getcfg_s3c64xx_4bit, .set_pull = s3c_gpio_setpull_updown, .get_pull = s3c_gpio_getpull_updown, }; static struct s3c_gpio_cfg gpio_4bit_cfg_eint0111 = { .cfg_eint = 7, .set_config = s3c_gpio_setcfg_s3c64xx_4bit, .get_config = s3c_gpio_getcfg_s3c64xx_4bit, .set_pull = s3c_gpio_setpull_updown, .get_pull = s3c_gpio_getpull_updown, }; static struct s3c_gpio_cfg gpio_4bit_cfg_eint0011 = { .cfg_eint = 3, .get_config = s3c_gpio_getcfg_s3c64xx_4bit, .set_config = s3c_gpio_setcfg_s3c64xx_4bit, .set_pull = s3c_gpio_setpull_updown, .get_pull = s3c_gpio_getpull_updown, }; static int s3c64xx_gpio2int_gpm(struct gpio_chip *chip, unsigned pin) { return pin < 5 ? IRQ_EINT(23) + pin : -ENXIO; } static struct s3c_gpio_chip gpio_4bit[] = { { .base = S3C64XX_GPA_BASE, .config = &gpio_4bit_cfg_eint0111, .chip = { .base = S3C64XX_GPA(0), .ngpio = S3C64XX_GPIO_A_NR, .label = "GPA", }, }, { .base = S3C64XX_GPB_BASE, .config = &gpio_4bit_cfg_eint0111, .chip = { .base = S3C64XX_GPB(0), .ngpio = S3C64XX_GPIO_B_NR, .label = "GPB", }, }, { .base = S3C64XX_GPC_BASE, .config = &gpio_4bit_cfg_eint0111, .chip = { .base = S3C64XX_GPC(0), .ngpio = S3C64XX_GPIO_C_NR, .label = "GPC", }, }, { .base = S3C64XX_GPD_BASE, .config = &gpio_4bit_cfg_eint0111, .chip = { .base = S3C64XX_GPD(0), .ngpio = S3C64XX_GPIO_D_NR, .label = "GPD", }, }, { .base = S3C64XX_GPE_BASE, .config = &gpio_4bit_cfg_noint, .chip = { .base = S3C64XX_GPE(0), .ngpio = S3C64XX_GPIO_E_NR, .label = "GPE", }, }, { .base = S3C64XX_GPG_BASE, .config = &gpio_4bit_cfg_eint0111, .chip = { .base = S3C64XX_GPG(0), .ngpio = S3C64XX_GPIO_G_NR, .label = "GPG", }, }, { .base = S3C64XX_GPM_BASE, .config = &gpio_4bit_cfg_eint0011, .chip = { .base = S3C64XX_GPM(0), .ngpio = S3C64XX_GPIO_M_NR, .label = "GPM", .to_irq = s3c64xx_gpio2int_gpm, }, }, }; static int s3c64xx_gpio2int_gpl(struct gpio_chip *chip, unsigned pin) { return pin >= 8 ? IRQ_EINT(16) + pin - 8 : -ENXIO; } static struct s3c_gpio_chip gpio_4bit2[] = { { .base = S3C64XX_GPH_BASE + 0x4, .config = &gpio_4bit_cfg_eint0111, .chip = { .base = S3C64XX_GPH(0), .ngpio = S3C64XX_GPIO_H_NR, .label = "GPH", }, }, { .base = S3C64XX_GPK_BASE + 0x4, .config = &gpio_4bit_cfg_noint, .chip = { .base = S3C64XX_GPK(0), .ngpio = S3C64XX_GPIO_K_NR, .label = "GPK", }, }, { .base = S3C64XX_GPL_BASE + 0x4, .config = &gpio_4bit_cfg_eint0011, .chip = { .base = S3C64XX_GPL(0), .ngpio = S3C64XX_GPIO_L_NR, .label = "GPL", .to_irq = s3c64xx_gpio2int_gpl, }, }, }; static struct s3c_gpio_cfg gpio_2bit_cfg_noint = { .set_config = s3c_gpio_setcfg_s3c24xx, .get_config = s3c_gpio_getcfg_s3c24xx, .set_pull = s3c_gpio_setpull_updown, .get_pull = s3c_gpio_getpull_updown, }; static struct s3c_gpio_cfg gpio_2bit_cfg_eint10 = { .cfg_eint = 2, .set_config = s3c_gpio_setcfg_s3c24xx, .get_config = s3c_gpio_getcfg_s3c24xx, .set_pull = s3c_gpio_setpull_updown, .get_pull = s3c_gpio_getpull_updown, }; static struct s3c_gpio_cfg gpio_2bit_cfg_eint11 = { .cfg_eint = 3, .set_config = s3c_gpio_setcfg_s3c24xx, .get_config = s3c_gpio_getcfg_s3c24xx, .set_pull = s3c_gpio_setpull_updown, .get_pull = s3c_gpio_getpull_updown, }; static struct s3c_gpio_chip gpio_2bit[] = { { .base = S3C64XX_GPF_BASE, .config = &gpio_2bit_cfg_eint11, .chip = { .base = S3C64XX_GPF(0), .ngpio = S3C64XX_GPIO_F_NR, .label = "GPF", }, }, { .base = S3C64XX_GPI_BASE, .config = &gpio_2bit_cfg_noint, .chip = { .base = S3C64XX_GPI(0), .ngpio = S3C64XX_GPIO_I_NR, .label = "GPI", }, }, { .base = S3C64XX_GPJ_BASE, .config = &gpio_2bit_cfg_noint, .chip = { .base = S3C64XX_GPJ(0), .ngpio = S3C64XX_GPIO_J_NR, .label = "GPJ", }, }, { .base = S3C64XX_GPN_BASE, .irq_base = IRQ_EINT(0), .config = &gpio_2bit_cfg_eint10, .chip = { .base = S3C64XX_GPN(0), .ngpio = S3C64XX_GPIO_N_NR, .label = "GPN", .to_irq = samsung_gpiolib_to_irq, }, }, { .base = S3C64XX_GPO_BASE, .config = &gpio_2bit_cfg_eint11, .chip = { .base = S3C64XX_GPO(0), .ngpio = S3C64XX_GPIO_O_NR, .label = "GPO", }, }, { .base = S3C64XX_GPP_BASE, .config = &gpio_2bit_cfg_eint11, .chip = { .base = S3C64XX_GPP(0), .ngpio = S3C64XX_GPIO_P_NR, .label = "GPP", }, }, { .base = S3C64XX_GPQ_BASE, .config = &gpio_2bit_cfg_eint11, .chip = { .base = S3C64XX_GPQ(0), .ngpio = S3C64XX_GPIO_Q_NR, .label = "GPQ", }, }, }; static __init void s3c64xx_gpiolib_add_2bit(struct s3c_gpio_chip *chip) { chip->pm = __gpio_pm(&s3c_gpio_pm_2bit); } static __init void s3c64xx_gpiolib_add(struct s3c_gpio_chip *chips, int nr_chips, void (*fn)(struct s3c_gpio_chip *)) { for (; nr_chips > 0; nr_chips--, chips++) { if (fn) (fn)(chips); s3c_gpiolib_add(chips); } } static __init int s3c64xx_gpiolib_init(void) { s3c64xx_gpiolib_add(gpio_4bit, ARRAY_SIZE(gpio_4bit), samsung_gpiolib_add_4bit); s3c64xx_gpiolib_add(gpio_4bit2, ARRAY_SIZE(gpio_4bit2), samsung_gpiolib_add_4bit2); s3c64xx_gpiolib_add(gpio_2bit, ARRAY_SIZE(gpio_2bit), s3c64xx_gpiolib_add_2bit); return 0; } core_initcall(s3c64xx_gpiolib_init);