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path: root/drivers/mmc/host
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Diffstat (limited to 'drivers/mmc/host')
-rw-r--r--drivers/mmc/host/dw_mmc.c14
-rw-r--r--drivers/mmc/host/dw_mmc.h3
-rw-r--r--drivers/mmc/host/omap.c18
-rw-r--r--drivers/mmc/host/omap_hsmmc.c16
-rw-r--r--drivers/mmc/host/sdhci-st.c15
5 files changed, 44 insertions, 22 deletions
diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index 32380d5d4f6b..767af2026f8b 100644
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -1112,11 +1112,12 @@ static void dw_mci_setup_bus(struct dw_mci_slot *slot, bool force_clkinit)
div = (host->bus_hz != clock) ? DIV_ROUND_UP(div, 2) : 0;
- dev_info(&slot->mmc->class_dev,
- "Bus speed (slot %d) = %dHz (slot req %dHz, actual %dHZ div = %d)\n",
- slot->id, host->bus_hz, clock,
- div ? ((host->bus_hz / div) >> 1) :
- host->bus_hz, div);
+ if (clock != slot->__clk_old || force_clkinit)
+ dev_info(&slot->mmc->class_dev,
+ "Bus speed (slot %d) = %dHz (slot req %dHz, actual %dHZ div = %d)\n",
+ slot->id, host->bus_hz, clock,
+ div ? ((host->bus_hz / div) >> 1) :
+ host->bus_hz, div);
/* disable clock */
mci_writel(host, CLKENA, 0);
@@ -1139,6 +1140,9 @@ static void dw_mci_setup_bus(struct dw_mci_slot *slot, bool force_clkinit)
/* inform CIU */
mci_send_cmd(slot, sdmmc_cmd_bits, 0);
+
+ /* keep the last clock value that was requested from core */
+ slot->__clk_old = clock;
}
host->current_speed = clock;
diff --git a/drivers/mmc/host/dw_mmc.h b/drivers/mmc/host/dw_mmc.h
index 9e740bc232a8..e8cd2dec3263 100644
--- a/drivers/mmc/host/dw_mmc.h
+++ b/drivers/mmc/host/dw_mmc.h
@@ -249,6 +249,8 @@ extern int dw_mci_resume(struct dw_mci *host);
* @queue_node: List node for placing this node in the @queue list of
* &struct dw_mci.
* @clock: Clock rate configured by set_ios(). Protected by host->lock.
+ * @__clk_old: The last clock value that was requested from core.
+ * Keeping track of this helps us to avoid spamming the console.
* @flags: Random state bits associated with the slot.
* @id: Number of this slot.
* @sdio_id: Number of this slot in the SDIO interrupt registers.
@@ -263,6 +265,7 @@ struct dw_mci_slot {
struct list_head queue_node;
unsigned int clock;
+ unsigned int __clk_old;
unsigned long flags;
#define DW_MMC_CARD_PRESENT 0
diff --git a/drivers/mmc/host/omap.c b/drivers/mmc/host/omap.c
index f23d65eb070d..be3c49fa7382 100644
--- a/drivers/mmc/host/omap.c
+++ b/drivers/mmc/host/omap.c
@@ -1016,14 +1016,16 @@ mmc_omap_prepare_data(struct mmc_omap_host *host, struct mmc_request *req)
/* Only reconfigure if we have a different burst size */
if (*bp != burst) {
- struct dma_slave_config cfg;
-
- cfg.src_addr = host->phys_base + OMAP_MMC_REG(host, DATA);
- cfg.dst_addr = host->phys_base + OMAP_MMC_REG(host, DATA);
- cfg.src_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
- cfg.dst_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
- cfg.src_maxburst = burst;
- cfg.dst_maxburst = burst;
+ struct dma_slave_config cfg = {
+ .src_addr = host->phys_base +
+ OMAP_MMC_REG(host, DATA),
+ .dst_addr = host->phys_base +
+ OMAP_MMC_REG(host, DATA),
+ .src_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES,
+ .dst_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES,
+ .src_maxburst = burst,
+ .dst_maxburst = burst,
+ };
if (dmaengine_slave_config(c, &cfg))
goto use_pio;
diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index 24ebc9a8de89..5f2f24a7360d 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -1409,11 +1409,18 @@ static int omap_hsmmc_pre_dma_transfer(struct omap_hsmmc_host *host,
static int omap_hsmmc_setup_dma_transfer(struct omap_hsmmc_host *host,
struct mmc_request *req)
{
- struct dma_slave_config cfg;
struct dma_async_tx_descriptor *tx;
int ret = 0, i;
struct mmc_data *data = req->data;
struct dma_chan *chan;
+ struct dma_slave_config cfg = {
+ .src_addr = host->mapbase + OMAP_HSMMC_DATA,
+ .dst_addr = host->mapbase + OMAP_HSMMC_DATA,
+ .src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES,
+ .dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES,
+ .src_maxburst = data->blksz / 4,
+ .dst_maxburst = data->blksz / 4,
+ };
/* Sanity check: all the SG entries must be aligned by block size. */
for (i = 0; i < data->sg_len; i++) {
@@ -1433,13 +1440,6 @@ static int omap_hsmmc_setup_dma_transfer(struct omap_hsmmc_host *host,
chan = omap_hsmmc_get_dma_chan(host, data);
- cfg.src_addr = host->mapbase + OMAP_HSMMC_DATA;
- cfg.dst_addr = host->mapbase + OMAP_HSMMC_DATA;
- cfg.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
- cfg.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
- cfg.src_maxburst = data->blksz / 4;
- cfg.dst_maxburst = data->blksz / 4;
-
ret = dmaengine_slave_config(chan, &cfg);
if (ret)
return ret;
diff --git a/drivers/mmc/host/sdhci-st.c b/drivers/mmc/host/sdhci-st.c
index c95ba83366a0..ed92ce729dde 100644
--- a/drivers/mmc/host/sdhci-st.c
+++ b/drivers/mmc/host/sdhci-st.c
@@ -28,6 +28,7 @@
struct st_mmc_platform_data {
struct reset_control *rstc;
+ struct clk *icnclk;
void __iomem *top_ioaddr;
};
@@ -353,7 +354,7 @@ static int sdhci_st_probe(struct platform_device *pdev)
struct sdhci_host *host;
struct st_mmc_platform_data *pdata;
struct sdhci_pltfm_host *pltfm_host;
- struct clk *clk;
+ struct clk *clk, *icnclk;
int ret = 0;
u16 host_version;
struct resource *res;
@@ -365,6 +366,11 @@ static int sdhci_st_probe(struct platform_device *pdev)
return PTR_ERR(clk);
}
+ /* ICN clock isn't compulsory, but use it if it's provided. */
+ icnclk = devm_clk_get(&pdev->dev, "icn");
+ if (IS_ERR(icnclk))
+ icnclk = NULL;
+
rstc = devm_reset_control_get(&pdev->dev, NULL);
if (IS_ERR(rstc))
rstc = NULL;
@@ -389,6 +395,7 @@ static int sdhci_st_probe(struct platform_device *pdev)
}
clk_prepare_enable(clk);
+ clk_prepare_enable(icnclk);
/* Configure the FlashSS Top registers for setting eMMC TX/RX delay */
res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
@@ -400,6 +407,7 @@ static int sdhci_st_probe(struct platform_device *pdev)
}
pltfm_host->clk = clk;
+ pdata->icnclk = icnclk;
/* Configure the Arasan HC inside the flashSS */
st_mmcss_cconfig(np, host);
@@ -422,6 +430,7 @@ static int sdhci_st_probe(struct platform_device *pdev)
return 0;
err_out:
+ clk_disable_unprepare(icnclk);
clk_disable_unprepare(clk);
err_of:
sdhci_pltfm_free(pdev);
@@ -442,6 +451,8 @@ static int sdhci_st_remove(struct platform_device *pdev)
ret = sdhci_pltfm_unregister(pdev);
+ clk_disable_unprepare(pdata->icnclk);
+
if (rstc)
reset_control_assert(rstc);
@@ -462,6 +473,7 @@ static int sdhci_st_suspend(struct device *dev)
if (pdata->rstc)
reset_control_assert(pdata->rstc);
+ clk_disable_unprepare(pdata->icnclk);
clk_disable_unprepare(pltfm_host->clk);
out:
return ret;
@@ -475,6 +487,7 @@ static int sdhci_st_resume(struct device *dev)
struct device_node *np = dev->of_node;
clk_prepare_enable(pltfm_host->clk);
+ clk_prepare_enable(pdata->icnclk);
if (pdata->rstc)
reset_control_deassert(pdata->rstc);
generated by cgit v1.2.3-58-ga151 (git 2.39.0) at 2024-12-25 04:03:23 +0000