Merge tag 'soc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC platform updates from Olof Johansson:
 "This branch contains part 1 of the platform updates for 3.10.  Among
  the highlights:

   - Support for the new Atmel Cortex-A5 based platforms (SAMA5D3)
   - New support for CSR SiRFatlas6 SoCs
   - A handful of updates for NVidia T114 (a.k.a. Tegra 4)
   - A bunch of updates for the shmobile platforms
   - A handful of updates for davinci
   - A few updates for Qualcomm MSM
   - Plus a handful of other patches, defconfig updates, etc."

* tag 'soc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (135 commits)
  ARM: tegra: pm: fix build error w/o PM_SLEEP
  ARM: davinci: ensure global variables are declared
  ARM: davinci: sram.c: fix incorrect type in assignment
  ARM: davinci: da8xx dt: make file local symbols static
  ARM: davinci: da8xx: add remoteproc support
  ARM: socfpga: Upgrade clk driver for socfpga to make use of dts clock entries
  ARM: socfpga: Add clock entries into device tree
  ARM: socfpga: Enable soft reset
  ARM: EXYNOS: replace cpumask by the corresponding macro
  ARM: EXYNOS: handle properly the return values
  ARM: EXYNOS: factor out the idle states
  ARM: OMAP4: Enable fix for Cortex-A9 erratas
  ARM: OMAP2+: Export SoC information to userspace
  ARM: OMAP2+: SoC name and revision unification
  ARM: OMAP2+: Move common part of late init into common function
  ARM: tegra: pm: remove duplicated include from pm.c
  ARM: davinci: da850: override mmc DT node device name
  ARM: davinci: da850: add mmc DT entries
  mmc: davinci_mmc: add DT support
  ARM: SAMSUNG: check processor type before cache restoration in resume
  ...

1 files changed, 83 insertions, 5 deletions

diff --git a/drivers/mmc/host/davinci_mmc.c b/drivers/mmc/host/davinci_mmc.c
index 20636772c09b..f8a96d652e9e 100644
--- a/drivers/mmc/host/davinci_mmc.c
+++ b/drivers/mmc/host/davinci_mmc.c
@@ -34,6 +34,8 @@
 #include <linux/dma-mapping.h>
 #include <linux/edma.h>
 #include <linux/mmc/mmc.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
 
 #include <linux/platform_data/mmc-davinci.h>
 
@@ -522,14 +524,16 @@ static int __init davinci_acquire_dma_channels(struct mmc_davinci_host *host)
         dma_cap_set(DMA_SLAVE, mask);
 
         host->dma_tx =
-                dma_request_channel(mask, edma_filter_fn, &host->txdma);
+                dma_request_slave_channel_compat(mask, edma_filter_fn,
+                                &host->txdma, mmc_dev(host->mmc), "tx");
         if (!host->dma_tx) {
                 dev_err(mmc_dev(host->mmc), "Can't get dma_tx channel\n");
                 return -ENODEV;
         }
 
         host->dma_rx =
-                dma_request_channel(mask, edma_filter_fn, &host->rxdma);
+                dma_request_slave_channel_compat(mask, edma_filter_fn,
+                                &host->rxdma, mmc_dev(host->mmc), "rx");
         if (!host->dma_rx) {
                 dev_err(mmc_dev(host->mmc), "Can't get dma_rx channel\n");
                 r = -ENODEV;
@@ -1157,16 +1161,86 @@ static void __init init_mmcsd_host(struct mmc_davinci_host *host)
         mmc_davinci_reset_ctrl(host, 0);
 }
 
-static int __init davinci_mmcsd_probe(struct platform_device *pdev)
+static struct platform_device_id davinci_mmc_devtype[] = {
+        {
+                .name   = "dm6441-mmc",
+                .driver_data = MMC_CTLR_VERSION_1,
+        }, {
+                .name   = "da830-mmc",
+                .driver_data = MMC_CTLR_VERSION_2,
+        },
+        {},
+};
+MODULE_DEVICE_TABLE(platform, davinci_mmc_devtype);
+
+static const struct of_device_id davinci_mmc_dt_ids[] = {
+        {
+                .compatible = "ti,dm6441-mmc",
+                .data = &davinci_mmc_devtype[MMC_CTLR_VERSION_1],
+        },
+        {
+                .compatible = "ti,da830-mmc",
+                .data = &davinci_mmc_devtype[MMC_CTLR_VERSION_2],
+        },
+        {},
+};
+MODULE_DEVICE_TABLE(of, davinci_mmc_dt_ids);
+
+static struct davinci_mmc_config
+        *mmc_parse_pdata(struct platform_device *pdev)
 {
+        struct device_node *np;
         struct davinci_mmc_config *pdata = pdev->dev.platform_data;
+        const struct of_device_id *match =
+                of_match_device(of_match_ptr(davinci_mmc_dt_ids), &pdev->dev);
+        u32 data;
+
+        np = pdev->dev.of_node;
+        if (!np)
+                return pdata;
+
+        pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
+        if (!pdata) {
+                dev_err(&pdev->dev, "Failed to allocate memory for struct davinci_mmc_config\n");
+                goto nodata;
+        }
+
+        if (match)
+                pdev->id_entry = match->data;
+
+        if (of_property_read_u32(np, "max-frequency", &pdata->max_freq))
+                dev_info(&pdev->dev, "'max-frequency' property not specified, defaulting to 25MHz\n");
+
+        of_property_read_u32(np, "bus-width", &data);
+        switch (data) {
+        case 1:
+        case 4:
+        case 8:
+                pdata->wires = data;
+                break;
+        default:
+                pdata->wires = 1;
+                dev_info(&pdev->dev, "Unsupported buswidth, defaulting to 1 bit\n");
+        }
+nodata:
+        return pdata;
+}
+
+static int __init davinci_mmcsd_probe(struct platform_device *pdev)
+{
+        struct davinci_mmc_config *pdata = NULL;
         struct mmc_davinci_host *host = NULL;
         struct mmc_host *mmc = NULL;
         struct resource *r, *mem = NULL;
         int ret = 0, irq = 0;
         size_t mem_size;
+        const struct platform_device_id *id_entry;
 
-        /* REVISIT:  when we're fully converted, fail if pdata is NULL */
+        pdata = mmc_parse_pdata(pdev);
+        if (pdata == NULL) {
+                dev_err(&pdev->dev, "Couldn't get platform data\n");
+                return -ENOENT;
+        }
 
         ret = -ENODEV;
         r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
@@ -1237,7 +1311,9 @@ static int __init davinci_mmcsd_probe(struct platform_device *pdev)
         if (pdata && (pdata->wires == 8))
                 mmc->caps |= (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA);
 
-        host->version = pdata->version;
+        id_entry = platform_get_device_id(pdev);
+        if (id_entry)
+                host->version = id_entry->driver_data;
 
         mmc->ops = &mmc_davinci_ops;
         mmc->f_min = 312500;
@@ -1406,8 +1482,10 @@ static struct platform_driver davinci_mmcsd_driver = {
                 .name   = "davinci_mmc",
                 .owner  = THIS_MODULE,
                 .pm     = davinci_mmcsd_pm_ops,
+                .of_match_table = of_match_ptr(davinci_mmc_dt_ids),
         },
         .remove         = __exit_p(davinci_mmcsd_remove),
+        .id_table       = davinci_mmc_devtype,
 };
 
 static int __init davinci_mmcsd_init(void)