c67d0f2926
This isolates the custom S3C24xx GPIO definition table to <linux/platform_data/gpio-samsung-s3x24xx.h> as this is used in a few different places in the kernel, removing the need to depend on the implicit inclusion of <mach/gpio.h> from <linux/gpio.h> and thus getting rid of a few nasty cross-dependencies. We also delete the nifty CONFIG_S3C24XX_GPIO_EXTRA stuff. The biggest this can ever be for the S3C24XX is CONFIG_S3C24XX_GPIO_EXTRA = 128, and then for CPU_S3C2443 or CPU_S3C2416 32*12 GPIOs are added, so 32*12+128 = 512 is the absolute roof value on this platform. So we set the size of ARCH_NR_GPIO to this and the GPIOs array will fit any S3C24XX platform, as per pattern from other archs. ChangeLog v2->v3: - Move the movement of the S3C64XX gpio.h file out of this patch and into the follow-up patch where it belongs. ChangeLog v1->v2: - Added an #ifdef ARCH_S3C24XX around the header inclusion in drivers/gpio/gpio-samsung.c as we would otherwise have colliding definitions when compiling S3C64XX. - Rename inclusion guard in the header file. Cc: Tomasz Figa <tomasz.figa@gmail.com> Cc: Sylwester Nawrocki <sylvester.nawrocki@gmail.com> Cc: Ben Dooks <ben-linux@fluff.org> Cc: linux-samsung-soc@vger.kernel.org Acked-by: Kukjin Kim <kgene.kim@samsung.com> Acked-by: Heiko Stuebner <heiko@sntech.de> Tested-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
71 lines
1.5 KiB
C
71 lines
1.5 KiB
C
/*
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* Copyright (C) 2012 Sylwester Nawrocki <sylvester.nawrocki@gmail.com>
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*
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* Helper functions for S3C24XX/S3C64XX SoC series CAMIF driver
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/gpio.h>
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#include <linux/platform_data/gpio-samsung-s3c24xx.h>
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#include <plat/gpio-cfg.h>
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/* Number of camera port pins, without FIELD */
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#define S3C_CAMIF_NUM_GPIOS 13
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/* Default camera port configuration helpers. */
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static void camif_get_gpios(int *gpio_start, int *gpio_reset)
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{
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#ifdef CONFIG_ARCH_S3C24XX
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*gpio_start = S3C2410_GPJ(0);
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*gpio_reset = S3C2410_GPJ(12);
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#else
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/* s3c64xx */
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*gpio_start = S3C64XX_GPF(0);
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*gpio_reset = S3C64XX_GPF(3);
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#endif
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}
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int s3c_camif_gpio_get(void)
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{
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int gpio_start, gpio_reset;
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int ret, i;
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camif_get_gpios(&gpio_start, &gpio_reset);
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for (i = 0; i < S3C_CAMIF_NUM_GPIOS; i++) {
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int gpio = gpio_start + i;
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if (gpio == gpio_reset)
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continue;
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ret = gpio_request(gpio, "camif");
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if (!ret)
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ret = s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2));
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if (ret) {
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pr_err("failed to configure GPIO %d\n", gpio);
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for (--i; i >= 0; i--)
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gpio_free(gpio--);
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return ret;
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}
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s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
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}
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return 0;
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}
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void s3c_camif_gpio_put(void)
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{
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int i, gpio_start, gpio_reset;
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camif_get_gpios(&gpio_start, &gpio_reset);
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for (i = 0; i < S3C_CAMIF_NUM_GPIOS; i++) {
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int gpio = gpio_start + i;
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if (gpio != gpio_reset)
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gpio_free(gpio);
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}
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}
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