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