diff options
author | Olof Johansson <olof@lixom.net> | 2015-08-11 14:59:02 +0200 |
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committer | Olof Johansson <olof@lixom.net> | 2015-08-11 14:59:02 +0200 |
commit | 28d250c4ed03e148ea98db6e5bb614002606adc2 (patch) | |
tree | c0728a977cac706ba59617f712897543cb0e3f50 /arch/arm/mach-s3c24xx/setup-camif.c | |
parent | fc293f5f2a2d94b889666c3dc3faa09f6b55e3e3 (diff) | |
parent | d306d08f07183fe1504257101b25b5b33d77bae9 (diff) |
Merge tag 'samsung-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into next/cleanup
Samsung cleanup for v4.3
- make the following headers local
watchdog-reset, onenand-core, irq-uart, backlight,
ata-core, regs-usb-hsotg-phy, spi-core, nand-core,
fb-core and regs-srom headers
- make the following c file local
s5p-dev-mfc, dev-backlight and setup-camif c file
- remove keypad-core.h file
- drop owner assignment in pmu.c
- remove duplicated define of SLEEP_MAGIC
- make exynos5420_powerdown_conf() staic
* tag 'samsung-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
ARM: SAMSUNG: remove keypad-core header in plat-samsung
ARM: SAMSUNG: local watchdog-reset header in mach-s3c64xx
ARM: SAMSUNG: local onenand-core header in mach-s3c64xx
ARM: SAMSUNG: local irq-uart header in mach-s3c64xx
ARM: SAMSUNG: local backlight header in mach-s3c64xx
ARM: SAMSUNG: local ata-core header in mach-s3c64xx
ARM: SAMSUNG: local regs-usb-hsotg-phy header in mach-s3c64xx
ARM: SAMSUNG: local spi-core header in mach-s3c24xx
ARM: SAMSUNG: local nand-core header in mach-s3c24xx
ARM: SAMSUNG: local fb-core header in mach-s3c24xx
ARM: SAMSUNG: local regs-srom header in mach-exynos
ARM: SAMSUNG: make local s5p-dev-mfc in mach-exynos
ARM: SAMSUNG: make local dev-backlight in mach-s3c64xx
ARM: SAMSUNG: make local setup-camif in mach-s3c24xx
ARM: EXYNOS: Drop owner assignment in pmu.c
ARM: EXYNOS: Remove duplicated define of SLEEP_MAGIC
ARM: EXYNOS: Make local function static
Signed-off-by: Olof Johansson <olof@lixom.net>
Diffstat (limited to 'arch/arm/mach-s3c24xx/setup-camif.c')
-rw-r--r-- | arch/arm/mach-s3c24xx/setup-camif.c | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/arch/arm/mach-s3c24xx/setup-camif.c b/arch/arm/mach-s3c24xx/setup-camif.c new file mode 100644 index 000000000000..72d8edb8927a --- /dev/null +++ b/arch/arm/mach-s3c24xx/setup-camif.c @@ -0,0 +1,71 @@ +/* + * Copyright (C) 2012 Sylwester Nawrocki <sylvester.nawrocki@gmail.com> + * + * Helper functions for S3C24XX/S3C64XX SoC series CAMIF driver + * + * 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/gpio.h> +#include <plat/gpio-cfg.h> +#include <mach/gpio-samsung.h> + +/* Number of camera port pins, without FIELD */ +#define S3C_CAMIF_NUM_GPIOS 13 + +/* Default camera port configuration helpers. */ + +static void camif_get_gpios(int *gpio_start, int *gpio_reset) +{ +#ifdef CONFIG_ARCH_S3C24XX + *gpio_start = S3C2410_GPJ(0); + *gpio_reset = S3C2410_GPJ(12); +#else + /* s3c64xx */ + *gpio_start = S3C64XX_GPF(0); + *gpio_reset = S3C64XX_GPF(3); +#endif +} + +int s3c_camif_gpio_get(void) +{ + int gpio_start, gpio_reset; + int ret, i; + + camif_get_gpios(&gpio_start, &gpio_reset); + + for (i = 0; i < S3C_CAMIF_NUM_GPIOS; i++) { + int gpio = gpio_start + i; + + if (gpio == gpio_reset) + continue; + + ret = gpio_request(gpio, "camif"); + if (!ret) + ret = s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2)); + if (ret) { + pr_err("failed to configure GPIO %d\n", gpio); + for (--i; i >= 0; i--) + gpio_free(gpio--); + return ret; + } + s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE); + } + + return 0; +} + +void s3c_camif_gpio_put(void) +{ + int i, gpio_start, gpio_reset; + + camif_get_gpios(&gpio_start, &gpio_reset); + + for (i = 0; i < S3C_CAMIF_NUM_GPIOS; i++) { + int gpio = gpio_start + i; + if (gpio != gpio_reset) + gpio_free(gpio); + } +} |