mmc: sh-mmcif: add OF support, make platform data optional
Add primitive OF support to the sh-mmcif driver, which also makes it necessary to be able to run without platform data. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Chris Ball <cjb@laptop.org>
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@ -54,6 +54,7 @@
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#include <linux/mmc/mmc.h>
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#include <linux/mmc/sdio.h>
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#include <linux/mmc/sh_mmcif.h>
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#include <linux/mod_devicetable.h>
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#include <linux/pagemap.h>
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#include <linux/platform_device.h>
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#include <linux/pm_qos.h>
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@ -384,6 +385,9 @@ static void sh_mmcif_request_dma(struct sh_mmcif_host *host,
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struct sh_dmae_slave *tx, *rx;
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host->dma_active = false;
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if (!pdata)
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return;
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/* We can only either use DMA for both Tx and Rx or not use it at all */
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if (pdata->dma) {
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dev_warn(&host->pd->dev,
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@ -444,13 +448,14 @@ static void sh_mmcif_release_dma(struct sh_mmcif_host *host)
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static void sh_mmcif_clock_control(struct sh_mmcif_host *host, unsigned int clk)
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{
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struct sh_mmcif_plat_data *p = host->pd->dev.platform_data;
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bool sup_pclk = p ? p->sup_pclk : false;
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sh_mmcif_bitclr(host, MMCIF_CE_CLK_CTRL, CLK_ENABLE);
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sh_mmcif_bitclr(host, MMCIF_CE_CLK_CTRL, CLK_CLEAR);
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if (!clk)
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return;
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if (p->sup_pclk && clk == host->clk)
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if (sup_pclk && clk == host->clk)
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sh_mmcif_bitset(host, MMCIF_CE_CLK_CTRL, CLK_SUP_PCLK);
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else
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sh_mmcif_bitset(host, MMCIF_CE_CLK_CTRL, CLK_CLEAR &
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@ -928,7 +933,7 @@ static void sh_mmcif_set_power(struct sh_mmcif_host *host, struct mmc_ios *ios)
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struct sh_mmcif_plat_data *pd = host->pd->dev.platform_data;
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struct mmc_host *mmc = host->mmc;
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if (pd->set_pwr)
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if (pd && pd->set_pwr)
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pd->set_pwr(host->pd, ios->power_mode != MMC_POWER_OFF);
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if (!IS_ERR(mmc->supply.vmmc))
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/* Errors ignored... */
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@ -996,7 +1001,7 @@ static int sh_mmcif_get_cd(struct mmc_host *mmc)
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struct sh_mmcif_host *host = mmc_priv(mmc);
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struct sh_mmcif_plat_data *p = host->pd->dev.platform_data;
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if (!p->get_cd)
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if (!p || !p->get_cd)
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return -ENOSYS;
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else
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return p->get_cd(host->pd);
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@ -1269,6 +1274,9 @@ static void sh_mmcif_init_ocr(struct sh_mmcif_host *host)
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mmc_regulator_get_supply(mmc);
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if (!pd)
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return;
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if (!mmc->ocr_avail)
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mmc->ocr_avail = pd->ocr;
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else if (pd->ocr)
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@ -1285,11 +1293,6 @@ static int __devinit sh_mmcif_probe(struct platform_device *pdev)
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void __iomem *reg;
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char clk_name[8];
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if (!pd) {
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dev_err(&pdev->dev, "sh_mmcif plat data error.\n");
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return -ENXIO;
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}
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irq[0] = platform_get_irq(pdev, 0);
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irq[1] = platform_get_irq(pdev, 1);
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if (irq[0] < 0 || irq[1] < 0) {
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@ -1325,7 +1328,7 @@ static int __devinit sh_mmcif_probe(struct platform_device *pdev)
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sh_mmcif_init_ocr(host);
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mmc->caps = MMC_CAP_MMC_HIGHSPEED;
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if (pd->caps)
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if (pd && pd->caps)
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mmc->caps |= pd->caps;
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mmc->max_segs = 32;
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mmc->max_blk_size = 512;
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@ -1462,6 +1465,12 @@ static int sh_mmcif_resume(struct device *dev)
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#define sh_mmcif_resume NULL
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#endif /* CONFIG_PM */
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static const struct of_device_id mmcif_of_match[] = {
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{ .compatible = "renesas,sh-mmcif" },
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{ }
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};
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MODULE_DEVICE_TABLE(of, mmcif_of_match);
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static const struct dev_pm_ops sh_mmcif_dev_pm_ops = {
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.suspend = sh_mmcif_suspend,
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.resume = sh_mmcif_resume,
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@ -1473,6 +1482,8 @@ static struct platform_driver sh_mmcif_driver = {
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.driver = {
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.name = DRIVER_NAME,
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.pm = &sh_mmcif_dev_pm_ops,
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.owner = THIS_MODULE,
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.of_match_table = mmcif_of_match,
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},
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};
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