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-rw-r--r--drivers/mmc/card/queue.c3
-rw-r--r--drivers/mmc/host/mmci.c78
-rw-r--r--drivers/mmc/host/mmci.h4
-rw-r--r--drivers/mmc/host/sdhci-acpi.c5
4 files changed, 66 insertions, 24 deletions
diff --git a/drivers/mmc/card/queue.c b/drivers/mmc/card/queue.c
index fa9632eb63f..357bbc54fe4 100644
--- a/drivers/mmc/card/queue.c
+++ b/drivers/mmc/card/queue.c
@@ -15,6 +15,7 @@
#include <linux/freezer.h>
#include <linux/kthread.h>
#include <linux/scatterlist.h>
+#include <linux/dma-mapping.h>
#include <linux/mmc/card.h>
#include <linux/mmc/host.h>
@@ -196,7 +197,7 @@ int mmc_init_queue(struct mmc_queue *mq, struct mmc_card *card,
struct mmc_queue_req *mqrq_prev = &mq->mqrq[1];
if (mmc_dev(host)->dma_mask && *mmc_dev(host)->dma_mask)
- limit = *mmc_dev(host)->dma_mask;
+ limit = dma_max_pfn(mmc_dev(host)) << PAGE_SHIFT;
mq->card = card;
mq->queue = blk_init_queue(mmc_request_fn, lock);
diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
index c3785edc0e9..d135c76c485 100644
--- a/drivers/mmc/host/mmci.c
+++ b/drivers/mmc/host/mmci.c
@@ -62,6 +62,7 @@ static unsigned int fmax = 515633;
* @signal_direction: input/out direction of bus signals can be indicated
* @pwrreg_clkgate: MMCIPOWER register must be used to gate the clock
* @busy_detect: true if busy detection on dat0 is supported
+ * @pwrreg_nopower: bits in MMCIPOWER don't controls ext. power supply
*/
struct variant_data {
unsigned int clkreg;
@@ -76,6 +77,7 @@ struct variant_data {
bool signal_direction;
bool pwrreg_clkgate;
bool busy_detect;
+ bool pwrreg_nopower;
};
static struct variant_data variant_arm = {
@@ -109,6 +111,7 @@ static struct variant_data variant_u300 = {
.pwrreg_powerup = MCI_PWR_ON,
.signal_direction = true,
.pwrreg_clkgate = true,
+ .pwrreg_nopower = true,
};
static struct variant_data variant_nomadik = {
@@ -121,6 +124,7 @@ static struct variant_data variant_nomadik = {
.pwrreg_powerup = MCI_PWR_ON,
.signal_direction = true,
.pwrreg_clkgate = true,
+ .pwrreg_nopower = true,
};
static struct variant_data variant_ux500 = {
@@ -135,6 +139,7 @@ static struct variant_data variant_ux500 = {
.signal_direction = true,
.pwrreg_clkgate = true,
.busy_detect = true,
+ .pwrreg_nopower = true,
};
static struct variant_data variant_ux500v2 = {
@@ -150,6 +155,7 @@ static struct variant_data variant_ux500v2 = {
.signal_direction = true,
.pwrreg_clkgate = true,
.busy_detect = true,
+ .pwrreg_nopower = true,
};
static int mmci_card_busy(struct mmc_host *mmc)
@@ -189,6 +195,21 @@ static int mmci_validate_data(struct mmci_host *host,
return 0;
}
+static void mmci_reg_delay(struct mmci_host *host)
+{
+ /*
+ * According to the spec, at least three feedback clock cycles
+ * of max 52 MHz must pass between two writes to the MMCICLOCK reg.
+ * Three MCLK clock cycles must pass between two MMCIPOWER reg writes.
+ * Worst delay time during card init is at 100 kHz => 30 us.
+ * Worst delay time when up and running is at 25 MHz => 120 ns.
+ */
+ if (host->cclk < 25000000)
+ udelay(30);
+ else
+ ndelay(120);
+}
+
/*
* This must be called with host->lock held
*/
@@ -1264,6 +1285,7 @@ static void mmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
mmci_set_clkreg(host, ios->clock);
mmci_write_pwrreg(host, pwr);
+ mmci_reg_delay(host);
spin_unlock_irqrestore(&host->lock, flags);
@@ -1510,23 +1532,6 @@ static int mmci_probe(struct amba_device *dev,
mmc->f_max = min(host->mclk, fmax);
dev_dbg(mmc_dev(mmc), "clocking block at %u Hz\n", mmc->f_max);
- host->pinctrl = devm_pinctrl_get(&dev->dev);
- if (IS_ERR(host->pinctrl)) {
- ret = PTR_ERR(host->pinctrl);
- goto clk_disable;
- }
-
- host->pins_default = pinctrl_lookup_state(host->pinctrl,
- PINCTRL_STATE_DEFAULT);
-
- /* enable pins to be muxed in and configured */
- if (!IS_ERR(host->pins_default)) {
- ret = pinctrl_select_state(host->pinctrl, host->pins_default);
- if (ret)
- dev_warn(&dev->dev, "could not set default pins\n");
- } else
- dev_warn(&dev->dev, "could not get default pinstate\n");
-
/* Get regulators and the supported OCR mask */
mmc_regulator_get_supply(mmc);
if (!mmc->ocr_avail)
@@ -1760,6 +1765,41 @@ static int mmci_resume(struct device *dev)
#endif
#ifdef CONFIG_PM_RUNTIME
+static void mmci_save(struct mmci_host *host)
+{
+ unsigned long flags;
+
+ if (host->variant->pwrreg_nopower) {
+ spin_lock_irqsave(&host->lock, flags);
+
+ writel(0, host->base + MMCIMASK0);
+ writel(0, host->base + MMCIDATACTRL);
+ writel(0, host->base + MMCIPOWER);
+ writel(0, host->base + MMCICLOCK);
+ mmci_reg_delay(host);
+
+ spin_unlock_irqrestore(&host->lock, flags);
+ }
+
+}
+
+static void mmci_restore(struct mmci_host *host)
+{
+ unsigned long flags;
+
+ if (host->variant->pwrreg_nopower) {
+ spin_lock_irqsave(&host->lock, flags);
+
+ writel(host->clk_reg, host->base + MMCICLOCK);
+ writel(host->datactrl_reg, host->base + MMCIDATACTRL);
+ writel(host->pwr_reg, host->base + MMCIPOWER);
+ writel(MCI_IRQENABLE, host->base + MMCIMASK0);
+ mmci_reg_delay(host);
+
+ spin_unlock_irqrestore(&host->lock, flags);
+ }
+}
+
static int mmci_runtime_suspend(struct device *dev)
{
struct amba_device *adev = to_amba_device(dev);
@@ -1767,6 +1807,8 @@ static int mmci_runtime_suspend(struct device *dev)
if (mmc) {
struct mmci_host *host = mmc_priv(mmc);
+ pinctrl_pm_select_sleep_state(dev);
+ mmci_save(host);
clk_disable_unprepare(host->clk);
}
@@ -1781,6 +1823,8 @@ static int mmci_runtime_resume(struct device *dev)
if (mmc) {
struct mmci_host *host = mmc_priv(mmc);
clk_prepare_enable(host->clk);
+ mmci_restore(host);
+ pinctrl_pm_select_default_state(dev);
}
return 0;
diff --git a/drivers/mmc/host/mmci.h b/drivers/mmc/host/mmci.h
index 69080fab637..168bc72f7a9 100644
--- a/drivers/mmc/host/mmci.h
+++ b/drivers/mmc/host/mmci.h
@@ -200,10 +200,6 @@ struct mmci_host {
struct sg_mapping_iter sg_miter;
unsigned int size;
- /* pinctrl handles */
- struct pinctrl *pinctrl;
- struct pinctrl_state *pins_default;
-
#ifdef CONFIG_DMA_ENGINE
/* DMA stuff */
struct dma_chan *dma_current;
diff --git a/drivers/mmc/host/sdhci-acpi.c b/drivers/mmc/host/sdhci-acpi.c
index cdd4ce0d7c9..ef19874fcd1 100644
--- a/drivers/mmc/host/sdhci-acpi.c
+++ b/drivers/mmc/host/sdhci-acpi.c
@@ -310,8 +310,9 @@ static int sdhci_acpi_probe(struct platform_device *pdev)
dma_mask = DMA_BIT_MASK(32);
}
- dev->dma_mask = &dev->coherent_dma_mask;
- dev->coherent_dma_mask = dma_mask;
+ err = dma_coerce_mask_and_coherent(dev, dma_mask);
+ if (err)
+ goto err_free;
}
if (c->slot) {
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-14 07:33:32 +0000