#include <linux/mmc/mmc.h>
#include <linux/mmc/sdio.h>
#include <linux/mmc/sh_mmcif.h>
+#include <linux/mmc/slot-gpio.h>
+#include <linux/mod_devicetable.h>
#include <linux/pagemap.h>
#include <linux/platform_device.h>
#include <linux/pm_qos.h>
struct mmc_host *mmc;
struct mmc_request *mrq;
struct platform_device *pd;
- struct sh_dmae_slave dma_slave_tx;
- struct sh_dmae_slave dma_slave_rx;
struct clk *hclk;
unsigned int clk;
int bus_width;
desc, cookie);
}
-static bool sh_mmcif_filter(struct dma_chan *chan, void *arg)
-{
- dev_dbg(chan->device->dev, "%s: slave data %p\n", __func__, arg);
- chan->private = arg;
- return true;
-}
-
static void sh_mmcif_request_dma(struct sh_mmcif_host *host,
struct sh_mmcif_plat_data *pdata)
{
- struct sh_dmae_slave *tx, *rx;
+ struct resource *res = platform_get_resource(host->pd, IORESOURCE_MEM, 0);
+ struct dma_slave_config cfg;
+ dma_cap_mask_t mask;
+ int ret;
+
host->dma_active = false;
+ if (!pdata)
+ return;
+
+ if (pdata->slave_id_tx <= 0 || pdata->slave_id_rx <= 0)
+ return;
+
/* We can only either use DMA for both Tx and Rx or not use it at all */
- if (pdata->dma) {
- dev_warn(&host->pd->dev,
- "Update your platform to use embedded DMA slave IDs\n");
- tx = &pdata->dma->chan_priv_tx;
- rx = &pdata->dma->chan_priv_rx;
- } else {
- tx = &host->dma_slave_tx;
- tx->slave_id = pdata->slave_id_tx;
- rx = &host->dma_slave_rx;
- rx->slave_id = pdata->slave_id_rx;
- }
- if (tx->slave_id > 0 && rx->slave_id > 0) {
- dma_cap_mask_t mask;
+ dma_cap_zero(mask);
+ dma_cap_set(DMA_SLAVE, mask);
- dma_cap_zero(mask);
- dma_cap_set(DMA_SLAVE, mask);
+ host->chan_tx = dma_request_channel(mask, shdma_chan_filter,
+ (void *)pdata->slave_id_tx);
+ dev_dbg(&host->pd->dev, "%s: TX: got channel %p\n", __func__,
+ host->chan_tx);
- host->chan_tx = dma_request_channel(mask, sh_mmcif_filter, tx);
- dev_dbg(&host->pd->dev, "%s: TX: got channel %p\n", __func__,
- host->chan_tx);
+ if (!host->chan_tx)
+ return;
- if (!host->chan_tx)
- return;
+ cfg.slave_id = pdata->slave_id_tx;
+ cfg.direction = DMA_MEM_TO_DEV;
+ cfg.dst_addr = res->start + MMCIF_CE_DATA;
+ cfg.src_addr = 0;
+ ret = dmaengine_slave_config(host->chan_tx, &cfg);
+ if (ret < 0)
+ goto ecfgtx;
- host->chan_rx = dma_request_channel(mask, sh_mmcif_filter, rx);
- dev_dbg(&host->pd->dev, "%s: RX: got channel %p\n", __func__,
- host->chan_rx);
+ host->chan_rx = dma_request_channel(mask, shdma_chan_filter,
+ (void *)pdata->slave_id_rx);
+ dev_dbg(&host->pd->dev, "%s: RX: got channel %p\n", __func__,
+ host->chan_rx);
- if (!host->chan_rx) {
- dma_release_channel(host->chan_tx);
- host->chan_tx = NULL;
- return;
- }
+ if (!host->chan_rx)
+ goto erqrx;
- init_completion(&host->dma_complete);
- }
+ cfg.slave_id = pdata->slave_id_rx;
+ cfg.direction = DMA_DEV_TO_MEM;
+ cfg.dst_addr = 0;
+ cfg.src_addr = res->start + MMCIF_CE_DATA;
+ ret = dmaengine_slave_config(host->chan_rx, &cfg);
+ if (ret < 0)
+ goto ecfgrx;
+
+ init_completion(&host->dma_complete);
+
+ return;
+
+ecfgrx:
+ dma_release_channel(host->chan_rx);
+ host->chan_rx = NULL;
+erqrx:
+ecfgtx:
+ dma_release_channel(host->chan_tx);
+ host->chan_tx = NULL;
}
static void sh_mmcif_release_dma(struct sh_mmcif_host *host)
static void sh_mmcif_clock_control(struct sh_mmcif_host *host, unsigned int clk)
{
struct sh_mmcif_plat_data *p = host->pd->dev.platform_data;
+ bool sup_pclk = p ? p->sup_pclk : false;
sh_mmcif_bitclr(host, MMCIF_CE_CLK_CTRL, CLK_ENABLE);
sh_mmcif_bitclr(host, MMCIF_CE_CLK_CTRL, CLK_CLEAR);
if (!clk)
return;
- if (p->sup_pclk && clk == host->clk)
+ if (sup_pclk && clk == host->clk)
sh_mmcif_bitset(host, MMCIF_CE_CLK_CTRL, CLK_SUP_PCLK);
else
sh_mmcif_bitset(host, MMCIF_CE_CLK_CTRL, CLK_CLEAR &
switch (mrq->cmd->opcode) {
/* MMCIF does not support SD/SDIO command */
- case SD_IO_SEND_OP_COND:
+ case MMC_SLEEP_AWAKE: /* = SD_IO_SEND_OP_COND (5) */
+ case MMC_SEND_EXT_CSD: /* = SD_SEND_IF_COND (8) */
+ if ((mrq->cmd->flags & MMC_CMD_MASK) != MMC_CMD_BCR)
+ break;
case MMC_APP_CMD:
host->state = STATE_IDLE;
mrq->cmd->error = -ETIMEDOUT;
mmc_request_done(mmc, mrq);
return;
- case MMC_SEND_EXT_CSD: /* = SD_SEND_IF_COND (8) */
- if (!mrq->data) {
- /* send_if_cond cmd (not support) */
- host->state = STATE_IDLE;
- mrq->cmd->error = -ETIMEDOUT;
- mmc_request_done(mmc, mrq);
- return;
- }
- break;
default:
break;
}
sh_mmcif_start_cmd(host, mrq);
}
+static int sh_mmcif_clk_update(struct sh_mmcif_host *host)
+{
+ int ret = clk_enable(host->hclk);
+
+ if (!ret) {
+ host->clk = clk_get_rate(host->hclk);
+ host->mmc->f_max = host->clk / 2;
+ host->mmc->f_min = host->clk / 512;
+ }
+
+ return ret;
+}
+
+static void sh_mmcif_set_power(struct sh_mmcif_host *host, struct mmc_ios *ios)
+{
+ struct sh_mmcif_plat_data *pd = host->pd->dev.platform_data;
+ struct mmc_host *mmc = host->mmc;
+
+ if (pd && pd->set_pwr)
+ pd->set_pwr(host->pd, ios->power_mode != MMC_POWER_OFF);
+ if (!IS_ERR(mmc->supply.vmmc))
+ /* Errors ignored... */
+ mmc_regulator_set_ocr(mmc, mmc->supply.vmmc,
+ ios->power_mode ? ios->vdd : 0);
+}
+
static void sh_mmcif_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
{
struct sh_mmcif_host *host = mmc_priv(mmc);
- struct sh_mmcif_plat_data *p = host->pd->dev.platform_data;
unsigned long flags;
spin_lock_irqsave(&host->lock, flags);
sh_mmcif_request_dma(host, host->pd->dev.platform_data);
host->card_present = true;
}
+ sh_mmcif_set_power(host, ios);
} else if (ios->power_mode == MMC_POWER_OFF || !ios->clock) {
/* clock stop */
sh_mmcif_clock_control(host, 0);
}
if (host->power) {
pm_runtime_put(&host->pd->dev);
+ clk_disable(host->hclk);
host->power = false;
- if (p->down_pwr && ios->power_mode == MMC_POWER_OFF)
- p->down_pwr(host->pd);
+ if (ios->power_mode == MMC_POWER_OFF)
+ sh_mmcif_set_power(host, ios);
}
host->state = STATE_IDLE;
return;
if (ios->clock) {
if (!host->power) {
- if (p->set_pwr)
- p->set_pwr(host->pd, ios->power_mode);
+ sh_mmcif_clk_update(host);
pm_runtime_get_sync(&host->pd->dev);
host->power = true;
sh_mmcif_sync_reset(host);
{
struct sh_mmcif_host *host = mmc_priv(mmc);
struct sh_mmcif_plat_data *p = host->pd->dev.platform_data;
+ int ret = mmc_gpio_get_cd(mmc);
+
+ if (ret >= 0)
+ return ret;
- if (!p->get_cd)
+ if (!p || !p->get_cd)
return -ENOSYS;
else
return p->get_cd(host->pd);
mmc_request_done(host->mmc, mrq);
}
+static void sh_mmcif_init_ocr(struct sh_mmcif_host *host)
+{
+ struct sh_mmcif_plat_data *pd = host->pd->dev.platform_data;
+ struct mmc_host *mmc = host->mmc;
+
+ mmc_regulator_get_supply(mmc);
+
+ if (!pd)
+ return;
+
+ if (!mmc->ocr_avail)
+ mmc->ocr_avail = pd->ocr;
+ else if (pd->ocr)
+ dev_warn(mmc_dev(mmc), "Platform OCR mask is ignored\n");
+}
+
static int __devinit sh_mmcif_probe(struct platform_device *pdev)
{
int ret = 0, irq[2];
struct mmc_host *mmc;
struct sh_mmcif_host *host;
- struct sh_mmcif_plat_data *pd;
+ struct sh_mmcif_plat_data *pd = pdev->dev.platform_data;
struct resource *res;
void __iomem *reg;
char clk_name[8];
dev_err(&pdev->dev, "ioremap error.\n");
return -ENOMEM;
}
- pd = pdev->dev.platform_data;
- if (!pd) {
- dev_err(&pdev->dev, "sh_mmcif plat data error.\n");
- ret = -ENXIO;
- goto clean_up;
- }
+
mmc = mmc_alloc_host(sizeof(struct sh_mmcif_host), &pdev->dev);
if (!mmc) {
ret = -ENOMEM;
- goto clean_up;
+ goto ealloch;
}
host = mmc_priv(mmc);
host->mmc = mmc;
host->addr = reg;
host->timeout = 1000;
- snprintf(clk_name, sizeof(clk_name), "mmc%d", pdev->id);
- host->hclk = clk_get(&pdev->dev, clk_name);
- if (IS_ERR(host->hclk)) {
- dev_err(&pdev->dev, "cannot get clock \"%s\"\n", clk_name);
- ret = PTR_ERR(host->hclk);
- goto clean_up1;
- }
- clk_enable(host->hclk);
- host->clk = clk_get_rate(host->hclk);
host->pd = pdev;
spin_lock_init(&host->lock);
mmc->ops = &sh_mmcif_ops;
- mmc->f_max = host->clk / 2;
- mmc->f_min = host->clk / 512;
- if (pd->ocr)
- mmc->ocr_avail = pd->ocr;
+ sh_mmcif_init_ocr(host);
+
mmc->caps = MMC_CAP_MMC_HIGHSPEED;
- if (pd->caps)
+ if (pd && pd->caps)
mmc->caps |= pd->caps;
mmc->max_segs = 32;
mmc->max_blk_size = 512;
mmc->max_blk_count = mmc->max_req_size / mmc->max_blk_size;
mmc->max_seg_size = mmc->max_req_size;
- sh_mmcif_sync_reset(host);
platform_set_drvdata(pdev, host);
pm_runtime_enable(&pdev->dev);
host->power = false;
+ snprintf(clk_name, sizeof(clk_name), "mmc%d", pdev->id);
+ host->hclk = clk_get(&pdev->dev, clk_name);
+ if (IS_ERR(host->hclk)) {
+ ret = PTR_ERR(host->hclk);
+ dev_err(&pdev->dev, "cannot get clock \"%s\": %d\n", clk_name, ret);
+ goto eclkget;
+ }
+ ret = sh_mmcif_clk_update(host);
+ if (ret < 0)
+ goto eclkupdate;
+
ret = pm_runtime_resume(&pdev->dev);
if (ret < 0)
- goto clean_up2;
+ goto eresume;
INIT_DELAYED_WORK(&host->timeout_work, mmcif_timeout_work);
+ sh_mmcif_sync_reset(host);
sh_mmcif_writel(host->addr, MMCIF_CE_INT_MASK, MASK_ALL);
ret = request_threaded_irq(irq[0], sh_mmcif_intr, sh_mmcif_irqt, 0, "sh_mmc:error", host);
if (ret) {
dev_err(&pdev->dev, "request_irq error (sh_mmc:error)\n");
- goto clean_up3;
+ goto ereqirq0;
}
ret = request_threaded_irq(irq[1], sh_mmcif_intr, sh_mmcif_irqt, 0, "sh_mmc:int", host);
if (ret) {
dev_err(&pdev->dev, "request_irq error (sh_mmc:int)\n");
- goto clean_up4;
+ goto ereqirq1;
+ }
+
+ if (pd && pd->use_cd_gpio) {
+ ret = mmc_gpio_request_cd(mmc, pd->cd_gpio);
+ if (ret < 0)
+ goto erqcd;
}
+ clk_disable(host->hclk);
ret = mmc_add_host(mmc);
if (ret < 0)
- goto clean_up5;
+ goto emmcaddh;
dev_pm_qos_expose_latency_limit(&pdev->dev, 100);
sh_mmcif_readl(host->addr, MMCIF_CE_VERSION) & 0x0000ffff);
return ret;
-clean_up5:
+emmcaddh:
+ if (pd && pd->use_cd_gpio)
+ mmc_gpio_free_cd(mmc);
+erqcd:
free_irq(irq[1], host);
-clean_up4:
+ereqirq1:
free_irq(irq[0], host);
-clean_up3:
+ereqirq0:
pm_runtime_suspend(&pdev->dev);
-clean_up2:
- pm_runtime_disable(&pdev->dev);
+eresume:
clk_disable(host->hclk);
-clean_up1:
+eclkupdate:
+ clk_put(host->hclk);
+eclkget:
+ pm_runtime_disable(&pdev->dev);
mmc_free_host(mmc);
-clean_up:
- if (reg)
- iounmap(reg);
+ealloch:
+ iounmap(reg);
return ret;
}
static int __devexit sh_mmcif_remove(struct platform_device *pdev)
{
struct sh_mmcif_host *host = platform_get_drvdata(pdev);
+ struct sh_mmcif_plat_data *pd = pdev->dev.platform_data;
int irq[2];
host->dying = true;
+ clk_enable(host->hclk);
pm_runtime_get_sync(&pdev->dev);
dev_pm_qos_hide_latency_limit(&pdev->dev);
+ if (pd && pd->use_cd_gpio)
+ mmc_gpio_free_cd(host->mmc);
+
mmc_remove_host(host->mmc);
sh_mmcif_writel(host->addr, MMCIF_CE_INT_MASK, MASK_ALL);
platform_set_drvdata(pdev, NULL);
- clk_disable(host->hclk);
mmc_free_host(host->mmc);
pm_runtime_put_sync(&pdev->dev);
+ clk_disable(host->hclk);
pm_runtime_disable(&pdev->dev);
return 0;
#ifdef CONFIG_PM
static int sh_mmcif_suspend(struct device *dev)
{
- struct platform_device *pdev = to_platform_device(dev);
- struct sh_mmcif_host *host = platform_get_drvdata(pdev);
+ struct sh_mmcif_host *host = dev_get_drvdata(dev);
int ret = mmc_suspend_host(host->mmc);
- if (!ret) {
+ if (!ret)
sh_mmcif_writel(host->addr, MMCIF_CE_INT_MASK, MASK_ALL);
- clk_disable(host->hclk);
- }
return ret;
}
static int sh_mmcif_resume(struct device *dev)
{
- struct platform_device *pdev = to_platform_device(dev);
- struct sh_mmcif_host *host = platform_get_drvdata(pdev);
-
- clk_enable(host->hclk);
+ struct sh_mmcif_host *host = dev_get_drvdata(dev);
return mmc_resume_host(host->mmc);
}
#define sh_mmcif_resume NULL
#endif /* CONFIG_PM */
+static const struct of_device_id mmcif_of_match[] = {
+ { .compatible = "renesas,sh-mmcif" },
+ { }
+};
+MODULE_DEVICE_TABLE(of, mmcif_of_match);
+
static const struct dev_pm_ops sh_mmcif_dev_pm_ops = {
.suspend = sh_mmcif_suspend,
.resume = sh_mmcif_resume,
.driver = {
.name = DRIVER_NAME,
.pm = &sh_mmcif_dev_pm_ops,
+ .owner = THIS_MODULE,
+ .of_match_table = mmcif_of_match,
},
};
projects / platform / adaptation / renesas_rcar / renesas_kernel.git / blobdiff