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path: root/drivers/mmc/host/sh_mmcif.c
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Diffstat (limited to 'drivers/mmc/host/sh_mmcif.c')
-rw-r--r--drivers/mmc/host/sh_mmcif.c141
1 files changed, 68 insertions, 73 deletions
diff --git a/drivers/mmc/host/sh_mmcif.c b/drivers/mmc/host/sh_mmcif.c
index 36629a024aa..656fbba4c42 100644
--- a/drivers/mmc/host/sh_mmcif.c
+++ b/drivers/mmc/host/sh_mmcif.c
@@ -381,73 +381,75 @@ static void sh_mmcif_start_dma_tx(struct sh_mmcif_host *host)
desc, cookie);
}
-static void sh_mmcif_request_dma(struct sh_mmcif_host *host,
- struct sh_mmcif_plat_data *pdata)
+static struct dma_chan *
+sh_mmcif_request_dma_one(struct sh_mmcif_host *host,
+ struct sh_mmcif_plat_data *pdata,
+ enum dma_transfer_direction direction)
{
- struct resource *res = platform_get_resource(host->pd, IORESOURCE_MEM, 0);
struct dma_slave_config cfg;
+ struct dma_chan *chan;
+ unsigned int slave_id;
+ struct resource *res;
dma_cap_mask_t mask;
int ret;
- host->dma_active = false;
-
- if (pdata) {
- if (pdata->slave_id_tx <= 0 || pdata->slave_id_rx <= 0)
- return;
- } else if (!host->pd->dev.of_node) {
- return;
- }
-
- /* We can only either use DMA for both Tx and Rx or not use it at all */
dma_cap_zero(mask);
dma_cap_set(DMA_SLAVE, mask);
- host->chan_tx = dma_request_slave_channel_compat(mask, shdma_chan_filter,
- pdata ? (void *)pdata->slave_id_tx : NULL,
- &host->pd->dev, "tx");
- dev_dbg(&host->pd->dev, "%s: TX: got channel %p\n", __func__,
- host->chan_tx);
+ if (pdata)
+ slave_id = direction == DMA_MEM_TO_DEV
+ ? pdata->slave_id_tx : pdata->slave_id_rx;
+ else
+ slave_id = 0;
+
+ chan = dma_request_slave_channel_compat(mask, shdma_chan_filter,
+ (void *)(unsigned long)slave_id, &host->pd->dev,
+ direction == DMA_MEM_TO_DEV ? "tx" : "rx");
- if (!host->chan_tx)
- return;
+ dev_dbg(&host->pd->dev, "%s: %s: got channel %p\n", __func__,
+ direction == DMA_MEM_TO_DEV ? "TX" : "RX", chan);
+
+ if (!chan)
+ return NULL;
+
+ res = platform_get_resource(host->pd, IORESOURCE_MEM, 0);
/* In the OF case the driver will get the slave ID from the DT */
- if (pdata)
- cfg.slave_id = pdata->slave_id_tx;
- cfg.direction = DMA_MEM_TO_DEV;
+ cfg.slave_id = slave_id;
+ cfg.direction = direction;
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;
+ ret = dmaengine_slave_config(chan, &cfg);
+ if (ret < 0) {
+ dma_release_channel(chan);
+ return NULL;
+ }
- host->chan_rx = dma_request_slave_channel_compat(mask, shdma_chan_filter,
- pdata ? (void *)pdata->slave_id_rx : NULL,
- &host->pd->dev, "rx");
- dev_dbg(&host->pd->dev, "%s: RX: got channel %p\n", __func__,
- host->chan_rx);
+ return chan;
+}
- if (!host->chan_rx)
- goto erqrx;
+static void sh_mmcif_request_dma(struct sh_mmcif_host *host,
+ struct sh_mmcif_plat_data *pdata)
+{
+ host->dma_active = false;
- if (pdata)
- 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;
+ if (pdata) {
+ if (pdata->slave_id_tx <= 0 || pdata->slave_id_rx <= 0)
+ return;
+ } else if (!host->pd->dev.of_node) {
+ return;
+ }
- return;
+ /* We can only either use DMA for both Tx and Rx or not use it at all */
+ host->chan_tx = sh_mmcif_request_dma_one(host, pdata, DMA_MEM_TO_DEV);
+ if (!host->chan_tx)
+ return;
-ecfgrx:
- dma_release_channel(host->chan_rx);
- host->chan_rx = NULL;
-erqrx:
-ecfgtx:
- dma_release_channel(host->chan_tx);
- host->chan_tx = NULL;
+ host->chan_rx = sh_mmcif_request_dma_one(host, pdata, DMA_DEV_TO_MEM);
+ if (!host->chan_rx) {
+ dma_release_channel(host->chan_tx);
+ host->chan_tx = NULL;
+ }
}
static void sh_mmcif_release_dma(struct sh_mmcif_host *host)
@@ -801,12 +803,13 @@ static u32 sh_mmcif_set_cmd(struct sh_mmcif_host *host,
break;
}
switch (host->timing) {
- case MMC_TIMING_UHS_DDR50:
+ case MMC_TIMING_MMC_DDR52:
/*
* MMC core will only set this timing, if the host
- * advertises the MMC_CAP_UHS_DDR50 capability. MMCIF
- * implementations with this capability, e.g. sh73a0,
- * will have to set it in their platform data.
+ * advertises the MMC_CAP_1_8V_DDR/MMC_CAP_1_2V_DDR
+ * capability. MMCIF implementations with this
+ * capability, e.g. sh73a0, will have to set it
+ * in their platform data.
*/
tmp |= CMD_SET_DARS;
break;
@@ -964,7 +967,7 @@ static void sh_mmcif_request(struct mmc_host *mmc, struct mmc_request *mrq)
static int sh_mmcif_clk_update(struct sh_mmcif_host *host)
{
- int ret = clk_enable(host->hclk);
+ int ret = clk_prepare_enable(host->hclk);
if (!ret) {
host->clk = clk_get_rate(host->hclk);
@@ -1018,7 +1021,7 @@ static void sh_mmcif_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
}
if (host->power) {
pm_runtime_put_sync(&host->pd->dev);
- clk_disable(host->hclk);
+ clk_disable_unprepare(host->hclk);
host->power = false;
if (ios->power_mode == MMC_POWER_OFF)
sh_mmcif_set_power(host, ios);
@@ -1466,7 +1469,7 @@ static int sh_mmcif_probe(struct platform_device *pdev)
mutex_init(&host->thread_lock);
- clk_disable(host->hclk);
+ clk_disable_unprepare(host->hclk);
ret = mmc_add_host(mmc);
if (ret < 0)
goto emmcaddh;
@@ -1487,7 +1490,7 @@ ereqirq1:
ereqirq0:
pm_runtime_suspend(&pdev->dev);
eresume:
- clk_disable(host->hclk);
+ clk_disable_unprepare(host->hclk);
eclkupdate:
clk_put(host->hclk);
eclkget:
@@ -1505,7 +1508,7 @@ static int sh_mmcif_remove(struct platform_device *pdev)
int irq[2];
host->dying = true;
- clk_enable(host->hclk);
+ clk_prepare_enable(host->hclk);
pm_runtime_get_sync(&pdev->dev);
dev_pm_qos_hide_latency_limit(&pdev->dev);
@@ -1530,7 +1533,7 @@ static int sh_mmcif_remove(struct platform_device *pdev)
if (irq[1] >= 0)
free_irq(irq[1], host);
- clk_disable(host->hclk);
+ clk_disable_unprepare(host->hclk);
mmc_free_host(host->mmc);
pm_runtime_put_sync(&pdev->dev);
pm_runtime_disable(&pdev->dev);
@@ -1538,28 +1541,21 @@ static int sh_mmcif_remove(struct platform_device *pdev)
return 0;
}
-#ifdef CONFIG_PM
+#ifdef CONFIG_PM_SLEEP
static int sh_mmcif_suspend(struct device *dev)
{
struct sh_mmcif_host *host = dev_get_drvdata(dev);
- int ret = mmc_suspend_host(host->mmc);
- if (!ret)
- sh_mmcif_writel(host->addr, MMCIF_CE_INT_MASK, MASK_ALL);
+ sh_mmcif_writel(host->addr, MMCIF_CE_INT_MASK, MASK_ALL);
- return ret;
+ return 0;
}
static int sh_mmcif_resume(struct device *dev)
{
- struct sh_mmcif_host *host = dev_get_drvdata(dev);
-
- return mmc_resume_host(host->mmc);
+ return 0;
}
-#else
-#define sh_mmcif_suspend NULL
-#define sh_mmcif_resume NULL
-#endif /* CONFIG_PM */
+#endif
static const struct of_device_id mmcif_of_match[] = {
{ .compatible = "renesas,sh-mmcif" },
@@ -1568,8 +1564,7 @@ static const struct of_device_id mmcif_of_match[] = {
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,
+ SET_SYSTEM_SLEEP_PM_OPS(sh_mmcif_suspend, sh_mmcif_resume)
};
static struct platform_driver sh_mmcif_driver = {
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-04 07:52:39 +0000