Merge branch 'msm-sdcc' into for-next

* msm-sdcc:
  msm: 8x50: Add initial support for SDCC
  mmc: msm_sdcc: Add gpio handling function to driver
  drivers: mmc: msm: remove clock disable in probe
  mmc: msm: fix dma usage not to use internal APIs

7 files changed, 376 insertions, 36 deletions

diff --git a/arch/arm/mach-msm/board-qsd8x50.c b/arch/arm/mach-msm/board-qsd8x50.c
index 6dde8185205f..29ef683c8048 100644
--- a/arch/arm/mach-msm/board-qsd8x50.c
+++ b/arch/arm/mach-msm/board-qsd8x50.c
@@ -1,4 +1,4 @@
-/* Copyright (c) 2008-2009, Code Aurora Forum. All rights reserved.
+/* Copyright (c) 2009-2011, Code Aurora Forum. All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 and
@@ -21,6 +21,7 @@
 #include <linux/platform_device.h>
 #include <linux/delay.h>
 #include <linux/usb/msm_hsusb.h>
+#include <linux/err.h>
 
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
@@ -31,6 +32,8 @@
 #include <mach/irqs.h>
 #include <mach/sirc.h>
 #include <mach/gpio.h>
+#include <mach/vreg.h>
+#include <mach/mmc.h>
 
 #include "devices.h"
 
@@ -95,6 +98,81 @@ static struct platform_device *devices[] __initdata = {
         &msm_device_hsusb_host,
 };
 
+static struct msm_mmc_gpio sdc1_gpio_cfg[] = {
+        {51, "sdc1_dat_3"},
+        {52, "sdc1_dat_2"},
+        {53, "sdc1_dat_1"},
+        {54, "sdc1_dat_0"},
+        {55, "sdc1_cmd"},
+        {56, "sdc1_clk"}
+};
+
+static struct vreg *vreg_mmc;
+static unsigned long vreg_sts;
+
+static uint32_t msm_sdcc_setup_power(struct device *dv, unsigned int vdd)
+{
+        int rc = 0;
+        struct platform_device *pdev;
+
+        pdev = container_of(dv, struct platform_device, dev);
+
+        if (vdd == 0) {
+                if (!vreg_sts)
+                        return 0;
+
+                clear_bit(pdev->id, &vreg_sts);
+
+                if (!vreg_sts) {
+                        rc = vreg_disable(vreg_mmc);
+                        if (rc)
+                                pr_err("vreg_mmc disable failed for slot "
+                                                "%d: %d\n", pdev->id, rc);
+                }
+                return 0;
+        }
+
+        if (!vreg_sts) {
+                rc = vreg_set_level(vreg_mmc, 2900);
+                if (rc)
+                        pr_err("vreg_mmc set level failed for slot %d: %d\n",
+                                        pdev->id, rc);
+                rc = vreg_enable(vreg_mmc);
+                if (rc)
+                        pr_err("vreg_mmc enable failed for slot %d: %d\n",
+                                        pdev->id, rc);
+        }
+        set_bit(pdev->id, &vreg_sts);
+        return 0;
+}
+
+static struct msm_mmc_gpio_data sdc1_gpio = {
+        .gpio = sdc1_gpio_cfg,
+        .size = ARRAY_SIZE(sdc1_gpio_cfg),
+};
+
+static struct msm_mmc_platform_data qsd8x50_sdc1_data = {
+        .ocr_mask       = MMC_VDD_27_28 | MMC_VDD_28_29,
+        .translate_vdd  = msm_sdcc_setup_power,
+        .gpio_data = &sdc1_gpio,
+};
+
+static void __init qsd8x50_init_mmc(void)
+{
+        if (machine_is_qsd8x50_ffa() || machine_is_qsd8x50a_ffa())
+                vreg_mmc = vreg_get(NULL, "gp6");
+        else
+                vreg_mmc = vreg_get(NULL, "gp5");
+
+        if (IS_ERR(vreg_mmc)) {
+                pr_err("vreg get for vreg_mmc failed (%ld)\n",
+                                PTR_ERR(vreg_mmc));
+                return;
+        }
+
+        msm_add_sdcc(1, &qsd8x50_sdc1_data, 0, 0);
+}
+
 static void __init qsd8x50_map_io(void)
 {
         msm_map_qsd8x50_io();
@@ -113,6 +191,7 @@ static void __init qsd8x50_init(void)
         msm_device_hsusb.dev.parent = &msm_device_otg.dev;
         msm_device_hsusb_host.dev.parent = &msm_device_otg.dev;
         platform_add_devices(devices, ARRAY_SIZE(devices));
+        qsd8x50_init_mmc();
 }
 
 MACHINE_START(QSD8X50_SURF, "QCT QSD8X50 SURF")
diff --git a/arch/arm/mach-msm/devices-qsd8x50.c b/arch/arm/mach-msm/devices-qsd8x50.c
index 93bddacad904..c9fa6552ff7d 100644
--- a/arch/arm/mach-msm/devices-qsd8x50.c
+++ b/arch/arm/mach-msm/devices-qsd8x50.c
@@ -125,6 +125,194 @@ struct platform_device msm_device_hsusb_host = {
         },
 };
 
+static struct resource resources_sdc1[] = {
+        {
+                .start  = MSM_SDC1_PHYS,
+                .end    = MSM_SDC1_PHYS + MSM_SDC1_SIZE - 1,
+                .flags  = IORESOURCE_MEM,
+        },
+        {
+                .start  = INT_SDC1_0,
+                .end    = INT_SDC1_0,
+                .flags  = IORESOURCE_IRQ,
+                .name   = "cmd_irq",
+        },
+        {
+                .start  = INT_SDC1_1,
+                .end    = INT_SDC1_1,
+                .flags  = IORESOURCE_IRQ,
+                .name   = "pio_irq",
+        },
+        {
+                .flags  = IORESOURCE_IRQ | IORESOURCE_DISABLED,
+                .name   = "status_irq"
+        },
+        {
+                .start  = 8,
+                .end    = 8,
+                .flags  = IORESOURCE_DMA,
+        },
+};
+
+static struct resource resources_sdc2[] = {
+        {
+                .start  = MSM_SDC2_PHYS,
+                .end    = MSM_SDC2_PHYS + MSM_SDC2_SIZE - 1,
+                .flags  = IORESOURCE_MEM,
+        },
+        {
+                .start  = INT_SDC2_0,
+                .end    = INT_SDC2_0,
+                .flags  = IORESOURCE_IRQ,
+                .name   = "cmd_irq",
+        },
+                {
+                .start  = INT_SDC2_1,
+                .end    = INT_SDC2_1,
+                .flags  = IORESOURCE_IRQ,
+                .name   = "pio_irq",
+        },
+        {
+                .flags  = IORESOURCE_IRQ | IORESOURCE_DISABLED,
+                .name   = "status_irq"
+        },
+        {
+                .start  = 8,
+                .end    = 8,
+                .flags  = IORESOURCE_DMA,
+        },
+};
+
+static struct resource resources_sdc3[] = {
+        {
+                .start  = MSM_SDC3_PHYS,
+                .end    = MSM_SDC3_PHYS + MSM_SDC3_SIZE - 1,
+                .flags  = IORESOURCE_MEM,
+        },
+        {
+                .start  = INT_SDC3_0,
+                .end    = INT_SDC3_0,
+                .flags  = IORESOURCE_IRQ,
+                .name   = "cmd_irq",
+        },
+                {
+                .start  = INT_SDC3_1,
+                .end    = INT_SDC3_1,
+                .flags  = IORESOURCE_IRQ,
+                .name   = "pio_irq",
+        },
+        {
+                .flags  = IORESOURCE_IRQ | IORESOURCE_DISABLED,
+                .name   = "status_irq"
+        },
+        {
+                .start  = 8,
+                .end    = 8,
+                .flags  = IORESOURCE_DMA,
+        },
+};
+
+static struct resource resources_sdc4[] = {
+        {
+                .start  = MSM_SDC4_PHYS,
+                .end    = MSM_SDC4_PHYS + MSM_SDC4_SIZE - 1,
+                .flags  = IORESOURCE_MEM,
+        },
+        {
+                .start  = INT_SDC4_0,
+                .end    = INT_SDC4_0,
+                .flags  = IORESOURCE_IRQ,
+                .name   = "cmd_irq",
+        },
+                {
+                .start  = INT_SDC4_1,
+                .end    = INT_SDC4_1,
+                .flags  = IORESOURCE_IRQ,
+                .name   = "pio_irq",
+        },
+        {
+                .flags  = IORESOURCE_IRQ | IORESOURCE_DISABLED,
+                .name   = "status_irq"
+        },
+        {
+                .start  = 8,
+                .end    = 8,
+                .flags  = IORESOURCE_DMA,
+        },
+};
+
+struct platform_device msm_device_sdc1 = {
+        .name           = "msm_sdcc",
+        .id             = 1,
+        .num_resources  = ARRAY_SIZE(resources_sdc1),
+        .resource       = resources_sdc1,
+        .dev            = {
+                .coherent_dma_mask      = 0xffffffff,
+        },
+};
+
+struct platform_device msm_device_sdc2 = {
+        .name           = "msm_sdcc",
+        .id             = 2,
+        .num_resources  = ARRAY_SIZE(resources_sdc2),
+        .resource       = resources_sdc2,
+        .dev            = {
+                .coherent_dma_mask      = 0xffffffff,
+        },
+};
+
+struct platform_device msm_device_sdc3 = {
+        .name           = "msm_sdcc",
+        .id             = 3,
+        .num_resources  = ARRAY_SIZE(resources_sdc3),
+        .resource       = resources_sdc3,
+        .dev            = {
+                .coherent_dma_mask      = 0xffffffff,
+        },
+};
+
+struct platform_device msm_device_sdc4 = {
+        .name           = "msm_sdcc",
+        .id             = 4,
+        .num_resources  = ARRAY_SIZE(resources_sdc4),
+        .resource       = resources_sdc4,
+        .dev            = {
+                .coherent_dma_mask      = 0xffffffff,
+        },
+};
+
+static struct platform_device *msm_sdcc_devices[] __initdata = {
+        &msm_device_sdc1,
+        &msm_device_sdc2,
+        &msm_device_sdc3,
+        &msm_device_sdc4,
+};
+
+int __init msm_add_sdcc(unsigned int controller,
+                        struct msm_mmc_platform_data *plat,
+                        unsigned int stat_irq, unsigned long stat_irq_flags)
+{
+        struct platform_device  *pdev;
+        struct resource *res;
+
+        if (controller < 1 || controller > 4)
+                return -EINVAL;
+
+        pdev = msm_sdcc_devices[controller-1];
+        pdev->dev.platform_data = plat;
+
+        res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "status_irq");
+        if (!res)
+                return -EINVAL;
+        else if (stat_irq) {
+                res->start = res->end = stat_irq;
+                res->flags &= ~IORESOURCE_DISABLED;
+                res->flags |= stat_irq_flags;
+        }
+
+        return platform_device_register(pdev);
+}
+
 struct clk msm_clocks_8x50[] = {
         CLK_PCOM("adm_clk",     ADM_CLK,        NULL, 0),
         CLK_PCOM("ebi1_clk",    EBI1_CLK,       NULL, CLK_MIN),
@@ -145,6 +333,14 @@ struct clk msm_clocks_8x50[] = {
         CLK_PCOM("pbus_clk",    PBUS_CLK,       NULL, CLK_MIN),
         CLK_PCOM("pcm_clk",     PCM_CLK,        NULL, 0),
         CLK_PCOM("sdac_clk",    SDAC_CLK,       NULL, OFF),
+        CLK_PCOM("sdc_clk",     SDC1_CLK,       &msm_device_sdc1.dev, OFF),
+        CLK_PCOM("sdc_pclk",    SDC1_P_CLK,     &msm_device_sdc1.dev, OFF),
+        CLK_PCOM("sdc_clk",     SDC2_CLK,       &msm_device_sdc2.dev, OFF),
+        CLK_PCOM("sdc_pclk",    SDC2_P_CLK,     &msm_device_sdc2.dev, OFF),
+        CLK_PCOM("sdc_clk",     SDC3_CLK,       &msm_device_sdc3.dev, OFF),
+        CLK_PCOM("sdc_pclk",    SDC3_P_CLK,     &msm_device_sdc3.dev, OFF),
+        CLK_PCOM("sdc_clk",     SDC4_CLK,       &msm_device_sdc4.dev, OFF),
+        CLK_PCOM("sdc_pclk",    SDC4_P_CLK,     &msm_device_sdc4.dev, OFF),
         CLK_PCOM("spi_clk",     SPI_CLK,        NULL, 0),
         CLK_PCOM("tsif_clk",    TSIF_CLK,       NULL, 0),
         CLK_PCOM("tsif_ref_clk",        TSIF_REF_CLK,   NULL, 0),
diff --git a/arch/arm/mach-msm/gpiomux-8x50.c b/arch/arm/mach-msm/gpiomux-8x50.c
index 4406e0f4ae95..f7a4ea593c95 100644
--- a/arch/arm/mach-msm/gpiomux-8x50.c
+++ b/arch/arm/mach-msm/gpiomux-8x50.c
@@ -16,6 +16,19 @@
  */
 #include "gpiomux.h"
 
+#if defined(CONFIG_MMC_MSM) || defined(CONFIG_MMC_MSM_MODULE)
+        #define SDCC_DAT_0_3_CMD_ACTV_CFG (GPIOMUX_VALID | GPIOMUX_PULL_UP\
+                                        | GPIOMUX_FUNC_1 | GPIOMUX_DRV_8MA)
+        #define SDCC_CLK_ACTV_CFG (GPIOMUX_VALID | GPIOMUX_PULL_NONE\
+                                        | GPIOMUX_FUNC_1 | GPIOMUX_DRV_8MA)
+#else
+        #define SDCC_DAT_0_3_CMD_ACTV_CFG 0
+        #define SDCC_CLK_ACTV_CFG 0
+#endif
+
+#define SDC1_SUSPEND_CONFIG (GPIOMUX_VALID | GPIOMUX_PULL_DOWN\
+                                | GPIOMUX_FUNC_GPIO | GPIOMUX_DRV_2MA)
+
 struct msm_gpiomux_config msm_gpiomux_configs[GPIOMUX_NGPIOS] = {
         [86] = { /* UART3 RX */
                 .suspended = GPIOMUX_DRV_2MA | GPIOMUX_PULL_DOWN |
@@ -25,4 +38,14 @@ struct msm_gpiomux_config msm_gpiomux_configs[GPIOMUX_NGPIOS] = {
                 .suspended = GPIOMUX_DRV_2MA | GPIOMUX_PULL_DOWN |
                              GPIOMUX_FUNC_1 | GPIOMUX_VALID,
         },
+        /* SDC1 data[3:0] & CMD */
+        [51 ... 55] = {
+                .active = SDCC_DAT_0_3_CMD_ACTV_CFG,
+                .suspended = SDC1_SUSPEND_CONFIG
+        },
+        /* SDC1 CLK */
+        [56] = {
+                .active = SDCC_CLK_ACTV_CFG,
+                .suspended = SDC1_SUSPEND_CONFIG
+        },
 };
diff --git a/arch/arm/mach-msm/include/mach/mmc.h b/arch/arm/mach-msm/include/mach/mmc.h
index d54b6b086cff..5631b51cec46 100644
--- a/arch/arm/mach-msm/include/mach/mmc.h
+++ b/arch/arm/mach-msm/include/mach/mmc.h
@@ -15,12 +15,23 @@ struct embedded_sdio_data {
         int num_funcs;
 };
 
+struct msm_mmc_gpio {
+        unsigned no;
+        const char *name;
+};
+
+struct msm_mmc_gpio_data {
+        struct msm_mmc_gpio *gpio;
+        u8 size;
+};
+
 struct msm_mmc_platform_data {
         unsigned int ocr_mask;                  /* available voltages */
         u32 (*translate_vdd)(struct device *, unsigned int);
         unsigned int (*status)(struct device *);
         struct embedded_sdio_data *embedded_sdio;
         int (*register_status_notify)(void (*callback)(int card_present, void *dev_id), void *dev_id);
+        struct msm_mmc_gpio_data *gpio_data;
 };
 
 #endif
diff --git a/arch/arm/mach-msm/include/mach/msm_iomap-8x50.h b/arch/arm/mach-msm/include/mach/msm_iomap-8x50.h
index cf1c2df1d953..d4143201999f 100644
--- a/arch/arm/mach-msm/include/mach/msm_iomap-8x50.h
+++ b/arch/arm/mach-msm/include/mach/msm_iomap-8x50.h
@@ -124,16 +124,16 @@
 #define MSM_UART2DM_PHYS      0xA0900000
 
 
-#define MSM_SDC1_PHYS          0xA0400000
+#define MSM_SDC1_PHYS          0xA0300000
 #define MSM_SDC1_SIZE          SZ_4K
 
-#define MSM_SDC2_PHYS          0xA0500000
+#define MSM_SDC2_PHYS          0xA0400000
 #define MSM_SDC2_SIZE          SZ_4K
 
-#define MSM_SDC3_PHYS          0xA0600000
+#define MSM_SDC3_PHYS          0xA0500000
 #define MSM_SDC3_SIZE           SZ_4K
 
-#define MSM_SDC4_PHYS          0xA0700000
+#define MSM_SDC4_PHYS          0xA0600000
 #define MSM_SDC4_SIZE          SZ_4K
 
 #endif
diff --git a/drivers/mmc/host/msm_sdcc.c b/drivers/mmc/host/msm_sdcc.c
index 5decfd0bd61d..97c9b3638d57 100644
--- a/drivers/mmc/host/msm_sdcc.c
+++ b/drivers/mmc/host/msm_sdcc.c
@@ -36,6 +36,7 @@
 #include <linux/io.h>
 #include <linux/memory.h>
 #include <linux/gfp.h>
+#include <linux/gpio.h>
 
 #include <asm/cacheflush.h>
 #include <asm/div64.h>
@@ -383,14 +384,30 @@ static int msmsdcc_config_dma(struct msmsdcc_host *host, struct mmc_data *data)
         host->curr.user_pages = 0;
 
         box = &nc->cmd[0];
-        for (i = 0; i < host->dma.num_ents; i++) {
-                box->cmd = CMD_MODE_BOX;
 
-        /* Initialize sg dma address */
-        sg->dma_address = page_to_dma(mmc_dev(host->mmc), sg_page(sg))
-                                + sg->offset;
+        /* location of command block must be 64 bit aligned */
+        BUG_ON(host->dma.cmd_busaddr & 0x07);
+
+        nc->cmdptr = (host->dma.cmd_busaddr >> 3) | CMD_PTR_LP;
+        host->dma.hdr.cmdptr = DMOV_CMD_PTR_LIST |
+                               DMOV_CMD_ADDR(host->dma.cmdptr_busaddr);
+        host->dma.hdr.complete_func = msmsdcc_dma_complete_func;
 
-        if (i == (host->dma.num_ents - 1))
+        n = dma_map_sg(mmc_dev(host->mmc), host->dma.sg,
+                        host->dma.num_ents, host->dma.dir);
+        if (n == 0) {
+                printk(KERN_ERR "%s: Unable to map in all sg elements\n",
+                        mmc_hostname(host->mmc));
+                host->dma.sg = NULL;
+                host->dma.num_ents = 0;
+                return -ENOMEM;
+        }
+
+        for_each_sg(host->dma.sg, sg, n, i) {
+
+                box->cmd = CMD_MODE_BOX;
+
+                if (i == n - 1)
                         box->cmd |= CMD_LC;
                 rows = (sg_dma_len(sg) % MCI_FIFOSIZE) ?
                         (sg_dma_len(sg) / MCI_FIFOSIZE) + 1 :
@@ -418,27 +435,6 @@ static int msmsdcc_config_dma(struct msmsdcc_host *host, struct mmc_data *data)
                         box->cmd |= CMD_DST_CRCI(crci);
                 }
                 box++;
-                sg++;
-        }
-
-        /* location of command block must be 64 bit aligned */
-        BUG_ON(host->dma.cmd_busaddr & 0x07);
-
-        nc->cmdptr = (host->dma.cmd_busaddr >> 3) | CMD_PTR_LP;
-        host->dma.hdr.cmdptr = DMOV_CMD_PTR_LIST |
-                               DMOV_CMD_ADDR(host->dma.cmdptr_busaddr);
-        host->dma.hdr.complete_func = msmsdcc_dma_complete_func;
-
-        n = dma_map_sg(mmc_dev(host->mmc), host->dma.sg,
-                        host->dma.num_ents, host->dma.dir);
-/* dsb inside dma_map_sg will write nc out to mem as well */
-
-        if (n != host->dma.num_ents) {
-                printk(KERN_ERR "%s: Unable to map in all sg elements\n",
-                        mmc_hostname(host->mmc));
-                host->dma.sg = NULL;
-                host->dma.num_ents = 0;
-                return -ENOMEM;
         }
 
         return 0;
@@ -946,6 +942,38 @@ msmsdcc_request(struct mmc_host *mmc, struct mmc_request *mrq)
         spin_unlock_irqrestore(&host->lock, flags);
 }
 
+static void msmsdcc_setup_gpio(struct msmsdcc_host *host, bool enable)
+{
+        struct msm_mmc_gpio_data *curr;
+        int i, rc = 0;
+
+        if (!host->plat->gpio_data && host->gpio_config_status == enable)
+                return;
+
+        curr = host->plat->gpio_data;
+        for (i = 0; i < curr->size; i++) {
+                if (enable) {
+                        rc = gpio_request(curr->gpio[i].no,
+                                                curr->gpio[i].name);
+                        if (rc) {
+                                pr_err("%s: gpio_request(%d, %s) failed %d\n",
+                                        mmc_hostname(host->mmc),
+                                        curr->gpio[i].no,
+                                        curr->gpio[i].name, rc);
+                                goto free_gpios;
+                        }
+                } else {
+                        gpio_free(curr->gpio[i].no);
+                }
+        }
+        host->gpio_config_status = enable;
+        return;
+
+free_gpios:
+        for (; i >= 0; i--)
+                gpio_free(curr->gpio[i].no);
+}
+
 static void
 msmsdcc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
 {
@@ -958,6 +986,8 @@ msmsdcc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
 
         msmsdcc_enable_clocks(host);
 
+        spin_unlock_irqrestore(&host->lock, flags);
+
         if (ios->clock) {
                 if (ios->clock != host->clk_rate) {
                         rc = clk_set_rate(host->clk, ios->clock);
@@ -984,9 +1014,11 @@ msmsdcc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
 
         switch (ios->power_mode) {
         case MMC_POWER_OFF:
+                msmsdcc_setup_gpio(host, false);
                 break;
         case MMC_POWER_UP:
                 pwr |= MCI_PWR_UP;
+                msmsdcc_setup_gpio(host, true);
                 break;
         case MMC_POWER_ON:
                 pwr |= MCI_PWR_ON;
@@ -1003,9 +1035,10 @@ msmsdcc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
                 msmsdcc_writel(host, pwr, MMCIPOWER);
         }
 #if BUSCLK_PWRSAVE
+        spin_lock_irqsave(&host->lock, flags);
         msmsdcc_disable_clocks(host, 1);
-#endif
         spin_unlock_irqrestore(&host->lock, flags);
+#endif
 }
 
 static void msmsdcc_enable_sdio_irq(struct mmc_host *mmc, int enable)
@@ -1331,9 +1364,6 @@ msmsdcc_probe(struct platform_device *pdev)
         if (host->timer.function)
                 pr_info("%s: Polling status mode enabled\n", mmc_hostname(mmc));
 
-#if BUSCLK_PWRSAVE
-        msmsdcc_disable_clocks(host, 1);
-#endif
         return 0;
  cmd_irq_free:
         free_irq(cmd_irqres->start, host);
diff --git a/drivers/mmc/host/msm_sdcc.h b/drivers/mmc/host/msm_sdcc.h
index 939557af266d..42d7bbc977c5 100644
--- a/drivers/mmc/host/msm_sdcc.h
+++ b/drivers/mmc/host/msm_sdcc.h
@@ -243,6 +243,7 @@ struct msmsdcc_host {
         unsigned int            cmd_datactrl;
         struct mmc_command      *cmd_cmd;
         u32                     cmd_c;
+        bool                    gpio_config_status;
 
         bool prog_scan;
         bool prog_enable;