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authorLinus Torvalds <torvalds@linux-foundation.org>2012-01-09 23:39:22 +0100
committerLinus Torvalds <torvalds@linux-foundation.org>2012-01-09 23:39:22 +0100
commit2ac9d7aaccbd598b5bd19ac40761b723bb675442 (patch)
tree09132a44e33798aaa5e80f10bf025b510015cab3 /arch/arm/mach-s5p64x0/setup-sdhci-gpio.c
parentMerge tag 'devel' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc (diff)
parentMerge branch 'samsung/driver' into next/drivers (diff)
downloadlinux-2ac9d7aaccbd598b5bd19ac40761b723bb675442.tar.xz
linux-2ac9d7aaccbd598b5bd19ac40761b723bb675442.zip
Merge tag 'drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Driver specific changes Again, a lot of platforms have changes in here: pxa, samsung, omap, at91, imx, ... * tag 'drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (54 commits) ARM: sa1100: clean up of the clock support ARM: pxa: add dummy clock for sa1100-rtc RTC: sa1100: support sa1100, pxa and mmp soc families RTC: sa1100: remove redundant code of setting alarm RTC: sa1100: Clean out ost register Input: zylonite-wm97xx - replace IRQ_GPIO() with gpio_to_irq() pcmcia: pxa: replace IRQ_GPIO() with gpio_to_irq() ARM: EXYNOS: Modified files for SPI consolidation work ARM: S5P64X0: Enable SDHCI support ARM: S5P64X0: Add lookup of sdhci-s3c clocks using generic names ARM: S5P64X0: Add HSMMC setup for host Controller ARM: EXYNOS: Add USB OHCI support to ORIGEN board USB: Add Samsung Exynos OHCI diver ARM: EXYNOS: Add USB OHCI support to SMDKV310 board ARM: EXYNOS: Add USB OHCI device net: macb: fix build break with !CONFIG_OF i2c: tegra: Support DVC controller in device tree i2c: tegra: Add __devinit/exit to probe/remove net/at91_ether: use gpio_is_valid for phy IRQ line ARM: at91/net: add macb ethernet controller in 9g45/9g20 DT ...
Diffstat (limited to 'arch/arm/mach-s5p64x0/setup-sdhci-gpio.c')
-rw-r--r--arch/arm/mach-s5p64x0/setup-sdhci-gpio.c104
1 files changed, 104 insertions, 0 deletions
diff --git a/arch/arm/mach-s5p64x0/setup-sdhci-gpio.c b/arch/arm/mach-s5p64x0/setup-sdhci-gpio.c
new file mode 100644
index 000000000000..8410af0d12bf
--- /dev/null
+++ b/arch/arm/mach-s5p64x0/setup-sdhci-gpio.c
@@ -0,0 +1,104 @@
+/* linux/arch/arm/mach-s5p64x0/setup-sdhci-gpio.c
+ *
+ * Copyright (c) 2011 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com/
+ *
+ * S5P64X0 - Helper functions for setting up SDHCI device(s) GPIO (HSMMC)
+ *
+ * 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/platform_device.h>
+#include <linux/io.h>
+#include <linux/gpio.h>
+
+#include <mach/regs-gpio.h>
+#include <mach/regs-clock.h>
+
+#include <plat/gpio-cfg.h>
+#include <plat/sdhci.h>
+#include <plat/cpu.h>
+
+void s5p64x0_setup_sdhci0_cfg_gpio(struct platform_device *dev, int width)
+{
+ struct s3c_sdhci_platdata *pdata = dev->dev.platform_data;
+
+ /* Set all the necessary GPG pins to special-function 2 */
+ if (soc_is_s5p6450())
+ s3c_gpio_cfgrange_nopull(S5P6450_GPG(0), 2 + width,
+ S3C_GPIO_SFN(2));
+ else
+ s3c_gpio_cfgrange_nopull(S5P6440_GPG(0), 2 + width,
+ S3C_GPIO_SFN(2));
+
+ /* Set GPG[6] pin to special-function 2 - MMC0 CDn */
+ if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) {
+ if (soc_is_s5p6450()) {
+ s3c_gpio_setpull(S5P6450_GPG(6), S3C_GPIO_PULL_UP);
+ s3c_gpio_cfgpin(S5P6450_GPG(6), S3C_GPIO_SFN(2));
+ } else {
+ s3c_gpio_setpull(S5P6440_GPG(6), S3C_GPIO_PULL_UP);
+ s3c_gpio_cfgpin(S5P6440_GPG(6), S3C_GPIO_SFN(2));
+ }
+ }
+}
+
+void s5p64x0_setup_sdhci1_cfg_gpio(struct platform_device *dev, int width)
+{
+ struct s3c_sdhci_platdata *pdata = dev->dev.platform_data;
+
+ /* Set GPH[0:1] pins to special-function 2 - CLK and CMD */
+ if (soc_is_s5p6450())
+ s3c_gpio_cfgrange_nopull(S5P6450_GPH(0), 2, S3C_GPIO_SFN(2));
+ else
+ s3c_gpio_cfgrange_nopull(S5P6440_GPH(0), 2 , S3C_GPIO_SFN(2));
+
+ switch (width) {
+ case 8:
+ /* Set data pins GPH[6:9] special-function 2 */
+ if (soc_is_s5p6450())
+ s3c_gpio_cfgrange_nopull(S5P6450_GPH(6), 4,
+ S3C_GPIO_SFN(2));
+ else
+ s3c_gpio_cfgrange_nopull(S5P6440_GPH(6), 4,
+ S3C_GPIO_SFN(2));
+ case 4:
+ /* set data pins GPH[2:5] special-function 2 */
+ if (soc_is_s5p6450())
+ s3c_gpio_cfgrange_nopull(S5P6450_GPH(2), 4,
+ S3C_GPIO_SFN(2));
+ else
+ s3c_gpio_cfgrange_nopull(S5P6440_GPH(2), 4,
+ S3C_GPIO_SFN(2));
+ default:
+ break;
+ }
+
+ /* Set GPG[6] pin to special-funtion 3 : MMC1 CDn */
+ if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) {
+ if (soc_is_s5p6450()) {
+ s3c_gpio_setpull(S5P6450_GPG(6), S3C_GPIO_PULL_UP);
+ s3c_gpio_cfgpin(S5P6450_GPG(6), S3C_GPIO_SFN(3));
+ } else {
+ s3c_gpio_setpull(S5P6440_GPG(6), S3C_GPIO_PULL_UP);
+ s3c_gpio_cfgpin(S5P6440_GPG(6), S3C_GPIO_SFN(3));
+ }
+ }
+}
+
+void s5p6440_setup_sdhci2_cfg_gpio(struct platform_device *dev, int width)
+{
+ /* Set GPC[4:5] pins to special-function 3 - CLK and CMD */
+ s3c_gpio_cfgrange_nopull(S5P6440_GPC(4), 2, S3C_GPIO_SFN(3));
+
+ /* Set data pins GPH[6:9] pins to special-function 3 */
+ s3c_gpio_cfgrange_nopull(S5P6440_GPH(6), 4, S3C_GPIO_SFN(3));
+}
+
+void s5p6450_setup_sdhci2_cfg_gpio(struct platform_device *dev, int width)
+{
+ /* Set all the necessary GPG pins to special-function 3 */
+ s3c_gpio_cfgrange_nopull(S5P6450_GPG(7), 2 + width, S3C_GPIO_SFN(3));
+}