mirror of https://gitee.com/openkylin/linux.git
ARM: S5PC1xx: add platform helpers for SDHCI host controllers
Samsung S5PC100 has 3 SDHCI controllers compatible with the one known from previous SoCs series. Add required platform setup and support code that the devices can be used with sdhci-s3c driver. Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
This commit is contained in:
Kyungmin Park
Ben Dooks
parent
067f131d09
commit
86cd4f5f83
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@ -14,6 +14,12 @@ config CPU_S5PC100
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help
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Enable S5PC100 CPU support
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config S5PC100_SETUP_SDHCI
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bool
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select S5PC1XX_SETUP_SDHCI_GPIO
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help
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Internal helper functions for S5PC100 based SDHCI systems
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config MACH_SMDKC100
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bool "SMDKC100"
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select CPU_S5PC100
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@ -13,5 +13,9 @@ obj- :=
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obj-$(CONFIG_CPU_S5PC100) += cpu.o
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# Helper and device support
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obj-$(CONFIG_S5PC100_SETUP_SDHCI) += setup-sdhci.o
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# machine support
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obj-$(CONFIG_MACH_SMDKC100) += mach-smdkc100.o
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@ -75,6 +75,9 @@ void __init s5pc100_map_io(void)
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iotable_init(s5pc100_iodesc, ARRAY_SIZE(s5pc100_iodesc));
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/* initialise device information early */
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s5pc100_default_sdhci0();
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s5pc100_default_sdhci1();
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s5pc100_default_sdhci2();
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/* the i2c devices are directly compatible with s3c2440 */
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s3c_i2c0_setname("s3c2440-i2c");
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@ -0,0 +1,65 @@
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/* linux/arch/arm/mach-s5pc100/setup-sdhci.c
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*
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* Copyright 2008 Samsung Electronics
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*
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* S5PC100 - Helper functions for settign up SDHCI device(s) (HSMMC)
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*
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* Based on mach-s3c6410/setup-sdhci.c
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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/kernel.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <linux/platform_device.h>
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#include <linux/io.h>
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#include <linux/mmc/card.h>
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#include <linux/mmc/host.h>
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#include <plat/regs-sdhci.h>
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#include <plat/sdhci.h>
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/* clock sources for the mmc bus clock, order as for the ctrl2[5..4] */
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char *s5pc100_hsmmc_clksrcs[4] = {
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[0] = "hsmmc",
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[1] = "hsmmc",
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/* [2] = "mmc_bus", not yet succesfuuly used yet */
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/* [3] = "48m", - note not succesfully used yet */
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};
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void s5pc100_setup_sdhci0_cfg_card(struct platform_device *dev,
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void __iomem *r,
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struct mmc_ios *ios,
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struct mmc_card *card)
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{
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u32 ctrl2, ctrl3;
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/* don't need to alter anything acording to card-type */
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writel(S3C64XX_SDHCI_CONTROL4_DRIVE_9mA, r + S3C64XX_SDHCI_CONTROL4);
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ctrl2 = readl(r + S3C_SDHCI_CONTROL2);
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ctrl2 &= S3C_SDHCI_CTRL2_SELBASECLK_MASK;
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ctrl2 |= (S3C64XX_SDHCI_CTRL2_ENSTAASYNCCLR |
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S3C64XX_SDHCI_CTRL2_ENCMDCNFMSK |
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S3C_SDHCI_CTRL2_ENFBCLKRX |
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S3C_SDHCI_CTRL2_DFCNT_NONE |
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S3C_SDHCI_CTRL2_ENCLKOUTHOLD);
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if (ios->clock < 25 * 1000000)
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ctrl3 = (S3C_SDHCI_CTRL3_FCSEL3 |
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S3C_SDHCI_CTRL3_FCSEL2 |
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S3C_SDHCI_CTRL3_FCSEL1 |
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S3C_SDHCI_CTRL3_FCSEL0);
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else
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ctrl3 = (S3C_SDHCI_CTRL3_FCSEL1 | S3C_SDHCI_CTRL3_FCSEL0);
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writel(ctrl2, r + S3C_SDHCI_CONTROL2);
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writel(ctrl3, r + S3C_SDHCI_CONTROL3);
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}
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@ -184,6 +184,11 @@ config S3C_DEV_HSMMC1
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help
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Compile in platform device definitions for HSMMC channel 1
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config S3C_DEV_HSMMC2
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bool
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help
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Compile in platform device definitions for HSMMC channel 2
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config S3C_DEV_I2C1
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bool
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help
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@ -36,6 +36,7 @@ obj-$(CONFIG_HAVE_PWM) += pwm.o
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obj-$(CONFIG_S3C_DEV_HSMMC) += dev-hsmmc.o
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obj-$(CONFIG_S3C_DEV_HSMMC1) += dev-hsmmc1.o
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obj-$(CONFIG_S3C_DEV_HSMMC2) += dev-hsmmc2.o
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obj-y += dev-i2c0.o
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obj-$(CONFIG_S3C_DEV_I2C1) += dev-i2c1.o
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obj-$(CONFIG_S3C_DEV_FB) += dev-fb.o
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@ -0,0 +1,65 @@
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/* linux/arch/arm/plat-s3c/dev-hsmmc2.c
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*
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* Copyright (c) 2009 Samsung Electronics
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*
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* S3C series device definition for hsmmc device 2
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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/kernel.h>
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#include <linux/platform_device.h>
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#include <linux/mmc/host.h>
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#include <mach/map.h>
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#include <plat/sdhci.h>
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#include <plat/devs.h>
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#define S3C_SZ_HSMMC (0x1000)
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static struct resource s3c_hsmmc2_resource[] = {
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[0] = {
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.start = S3C_PA_HSMMC2,
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.end = S3C_PA_HSMMC2 + S3C_SZ_HSMMC - 1,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = IRQ_HSMMC2,
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.end = IRQ_HSMMC2,
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.flags = IORESOURCE_IRQ,
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}
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};
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static u64 s3c_device_hsmmc2_dmamask = 0xffffffffUL;
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struct s3c_sdhci_platdata s3c_hsmmc2_def_platdata = {
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.max_width = 4,
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.host_caps = (MMC_CAP_4_BIT_DATA |
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MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED),
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};
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struct platform_device s3c_device_hsmmc2 = {
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.name = "s3c-sdhci",
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.id = 2,
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.num_resources = ARRAY_SIZE(s3c_hsmmc2_resource),
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.resource = s3c_hsmmc2_resource,
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.dev = {
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.dma_mask = &s3c_device_hsmmc2_dmamask,
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.coherent_dma_mask = 0xffffffffUL,
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.platform_data = &s3c_hsmmc2_def_platdata,
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},
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};
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void s3c_sdhci2_set_platdata(struct s3c_sdhci_platdata *pd)
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{
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struct s3c_sdhci_platdata *set = &s3c_hsmmc2_def_platdata;
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set->max_width = pd->max_width;
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if (pd->cfg_gpio)
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set->cfg_gpio = pd->cfg_gpio;
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if (pd->cfg_card)
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set->cfg_card = pd->cfg_card;
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}
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@ -57,6 +57,7 @@ struct s3c_sdhci_platdata {
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*/
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extern void s3c_sdhci0_set_platdata(struct s3c_sdhci_platdata *pd);
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extern void s3c_sdhci1_set_platdata(struct s3c_sdhci_platdata *pd);
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extern void s3c_sdhci2_set_platdata(struct s3c_sdhci_platdata *pd);
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/* Default platform data, exported so that per-cpu initialisation can
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* set the correct one when there are more than one cpu type selected.
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@ -64,11 +65,15 @@ extern void s3c_sdhci1_set_platdata(struct s3c_sdhci_platdata *pd);
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extern struct s3c_sdhci_platdata s3c_hsmmc0_def_platdata;
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extern struct s3c_sdhci_platdata s3c_hsmmc1_def_platdata;
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extern struct s3c_sdhci_platdata s3c_hsmmc2_def_platdata;
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/* Helper function availablity */
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extern void s3c64xx_setup_sdhci0_cfg_gpio(struct platform_device *, int w);
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extern void s3c64xx_setup_sdhci1_cfg_gpio(struct platform_device *, int w);
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extern void s5pc100_setup_sdhci0_cfg_gpio(struct platform_device *, int w);
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extern void s5pc100_setup_sdhci1_cfg_gpio(struct platform_device *, int w);
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extern void s5pc100_setup_sdhci2_cfg_gpio(struct platform_device *, int w);
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/* S3C6400 SDHCI setup */
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@ -145,4 +150,54 @@ static inline void s3c6410_default_sdhci0(void) { }
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static inline void s3c6410_default_sdhci1(void) { }
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#endif /* CONFIG_S3C6410_SETUP_SDHCI */
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/* S5PC100 SDHCI setup */
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#ifdef CONFIG_S5PC100_SETUP_SDHCI
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extern char *s5pc100_hsmmc_clksrcs[4];
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extern void s5pc100_setup_sdhci0_cfg_card(struct platform_device *dev,
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void __iomem *r,
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struct mmc_ios *ios,
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struct mmc_card *card);
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#ifdef CONFIG_S3C_DEV_HSMMC
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static inline void s5pc100_default_sdhci0(void)
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{
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s3c_hsmmc0_def_platdata.clocks = s5pc100_hsmmc_clksrcs;
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s3c_hsmmc0_def_platdata.cfg_gpio = s5pc100_setup_sdhci0_cfg_gpio;
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s3c_hsmmc0_def_platdata.cfg_card = s5pc100_setup_sdhci0_cfg_card;
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}
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#else
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static inline void s5pc100_default_sdhci0(void) { }
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#endif /* CONFIG_S3C_DEV_HSMMC */
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#ifdef CONFIG_S3C_DEV_HSMMC1
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static inline void s5pc100_default_sdhci1(void)
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{
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s3c_hsmmc1_def_platdata.clocks = s5pc100_hsmmc_clksrcs;
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s3c_hsmmc1_def_platdata.cfg_gpio = s5pc100_setup_sdhci1_cfg_gpio;
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s3c_hsmmc1_def_platdata.cfg_card = s5pc100_setup_sdhci0_cfg_card;
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}
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#else
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static inline void s5pc100_default_sdhci1(void) { }
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#endif /* CONFIG_S3C_DEV_HSMMC1 */
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#ifdef CONFIG_S3C_DEV_HSMMC2
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static inline void s5pc100_default_sdhci2(void)
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{
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s3c_hsmmc2_def_platdata.clocks = s5pc100_hsmmc_clksrcs;
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s3c_hsmmc2_def_platdata.cfg_gpio = s5pc100_setup_sdhci2_cfg_gpio;
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s3c_hsmmc2_def_platdata.cfg_card = s5pc100_setup_sdhci0_cfg_card;
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}
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#else
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static inline void s5pc100_default_sdhci2(void) { }
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#endif /* CONFIG_S3C_DEV_HSMMC1 */
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#else
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static inline void s5pc100_default_sdhci0(void) { }
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static inline void s5pc100_default_sdhci1(void) { }
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static inline void s5pc100_default_sdhci2(void) { }
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#endif /* CONFIG_S5PC100_SETUP_SDHCI */
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#endif /* __PLAT_S3C_SDHCI_H */
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@ -55,4 +55,10 @@ config S5PC1XX_SETUP_I2C1
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bool
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help
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Common setup code for i2c bus 1.
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config S5PC1XX_SETUP_SDHCI_GPIO
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bool
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help
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Common setup code for SDHCI gpio.
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endif
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@ -28,3 +28,4 @@ obj-$(CONFIG_S5P_GPIO_CFG_S5PC1XX) += gpio-config.o
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obj-$(CONFIG_S5PC1XX_SETUP_FB_24BPP) += setup-fb-24bpp.o
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obj-$(CONFIG_S5PC1XX_SETUP_I2C0) += setup-i2c0.o
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obj-$(CONFIG_S5PC1XX_SETUP_I2C1) += setup-i2c1.o
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obj-$(CONFIG_S5PC1XX_SETUP_SDHCI_GPIO) += setup-sdhci-gpio.o
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@ -0,0 +1,86 @@
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/* linux/arch/arm/plat-s5pc1xx/setup-sdhci-gpio.c
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*
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* Copyright 2009 Samsung Eletronics
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*
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* S5PC1XX - Helper functions for setting up SDHCI device(s) GPIO (HSMMC)
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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/kernel.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <linux/platform_device.h>
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#include <linux/io.h>
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#include <linux/gpio.h>
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#include <linux/mmc/host.h>
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#include <linux/mmc/card.h>
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#include <plat/gpio-cfg.h>
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#include <plat/regs-sdhci.h>
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void s5pc100_setup_sdhci0_cfg_gpio(struct platform_device *dev, int width)
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{
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unsigned int gpio;
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unsigned int end;
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unsigned int num;
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num = width;
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/* In case of 8 width, we should decrease the 2 */
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if (width == 8)
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num = width - 2;
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end = S5PC100_GPG0(2 + num);
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/* Set all the necessary GPG0/GPG1 pins to special-function 0 */
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for (gpio = S5PC100_GPG0(0); gpio < end; gpio++) {
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s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2));
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s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
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}
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if (width == 8) {
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for (gpio = S5PC100_GPG1(0); gpio <= S5PC100_GPG1(1); gpio++) {
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s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2));
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s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
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}
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}
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s3c_gpio_setpull(S5PC100_GPG1(2), S3C_GPIO_PULL_UP);
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s3c_gpio_cfgpin(S5PC100_GPG1(2), S3C_GPIO_SFN(2));
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}
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void s5pc100_setup_sdhci1_cfg_gpio(struct platform_device *dev, int width)
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{
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unsigned int gpio;
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unsigned int end;
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end = S5PC100_GPG2(2 + width);
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/* Set all the necessary GPG2 pins to special-function 2 */
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for (gpio = S5PC100_GPG2(0); gpio < end; gpio++) {
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s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2));
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s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
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}
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s3c_gpio_setpull(S5PC100_GPG2(6), S3C_GPIO_PULL_UP);
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s3c_gpio_cfgpin(S5PC100_GPG2(6), S3C_GPIO_SFN(2));
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}
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void s5pc100_setup_sdhci2_cfg_gpio(struct platform_device *dev, int width)
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{
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unsigned int gpio;
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unsigned int end;
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end = S5PC100_GPG3(2 + width);
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/* Set all the necessary GPG3 pins to special-function 2 */
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for (gpio = S5PC100_GPG3(0); gpio < end; gpio++) {
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s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2));
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s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
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}
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s3c_gpio_setpull(S5PC100_GPG3(6), S3C_GPIO_PULL_UP);
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s3c_gpio_cfgpin(S5PC100_GPG3(6), S3C_GPIO_SFN(2));
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}
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