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authorLinus Torvalds <torvalds@linux-foundation.org>2012-03-23 17:36:29 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-03-23 17:36:29 -0700
commit0d19eac12031680dc5f5402921fb0c388e42f619 (patch)
tree57302fb8778b6527c35175cc1edf228dd9f7abb9 /drivers
parent56c10bf82c10588b743e75a13a7949e11b9fc942 (diff)
parentbba1594d348b59d6172e02bf74fba837c8273989 (diff)
Merge branch 'amba' of git://git.linaro.org/people/rmk/linux-arm
Pull #2 ARM updates from Russell King: "Further ARM AMBA primecell updates which aren't included directly in the previous commit. I wanted to keep these separate as they're touching stuff outside arch/arm/." * 'amba' of git://git.linaro.org/people/rmk/linux-arm: ARM: 7362/1: AMBA: Add module_amba_driver() helper macro for amba_driver ARM: 7335/1: mach-u300: do away with MMC config files ARM: 7280/1: mmc: mmci: Cache MMCICLOCK and MMCIPOWER register ARM: 7309/1: realview: fix unconnected interrupts on EB11MP ARM: 7230/1: mmc: mmci: Fix PIO read for small SDIO packets ARM: 7227/1: mmc: mmci: Prepare for SDIO before setting up DMA job ARM: 7223/1: mmc: mmci: Fixup use of runtime PM and use autosuspend ARM: 7221/1: mmc: mmci: Change from using legacy suspend ARM: 7219/1: mmc: mmci: Change vdd_handler to a generic ios_handler ARM: 7218/1: mmc: mmci: Provide option to configure bus signal direction ARM: 7217/1: mmc: mmci: Put power register deviations in variant data ARM: 7216/1: mmc: mmci: Do not release spinlock in request_end ARM: 7215/1: mmc: mmci: Increase max_segs from 16 to 128
Diffstat (limited to 'drivers')
-rw-r--r--drivers/char/hw_random/nomadik-rng.c13
-rw-r--r--drivers/dma/pl330.c13
-rw-r--r--drivers/input/serio/ambakmi.c13
-rw-r--r--drivers/mmc/host/mmci.c178
-rw-r--r--drivers/mmc/host/mmci.h15
-rw-r--r--drivers/rtc/rtc-pl030.c13
-rw-r--r--drivers/rtc/rtc-pl031.c13
-rw-r--r--drivers/watchdog/sp805_wdt.c12
8 files changed, 131 insertions, 139 deletions
diff --git a/drivers/char/hw_random/nomadik-rng.c b/drivers/char/hw_random/nomadik-rng.c
index 3d3c1e6703b..96de0249e59 100644
--- a/drivers/char/hw_random/nomadik-rng.c
+++ b/drivers/char/hw_random/nomadik-rng.c
@@ -107,17 +107,6 @@ static struct amba_driver nmk_rng_driver = {
.id_table = nmk_rng_ids,
};
-static int __init nmk_rng_init(void)
-{
- return amba_driver_register(&nmk_rng_driver);
-}
-
-static void __devexit nmk_rng_exit(void)
-{
- amba_driver_unregister(&nmk_rng_driver);
-}
-
-module_init(nmk_rng_init);
-module_exit(nmk_rng_exit);
+module_amba_driver(nmk_rng_driver);
MODULE_LICENSE("GPL");
diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c
index b8ec03ee8e2..16b66c827f1 100644
--- a/drivers/dma/pl330.c
+++ b/drivers/dma/pl330.c
@@ -1035,18 +1035,7 @@ static struct amba_driver pl330_driver = {
.remove = pl330_remove,
};
-static int __init pl330_init(void)
-{
- return amba_driver_register(&pl330_driver);
-}
-module_init(pl330_init);
-
-static void __exit pl330_exit(void)
-{
- amba_driver_unregister(&pl330_driver);
- return;
-}
-module_exit(pl330_exit);
+module_amba_driver(pl330_driver);
MODULE_AUTHOR("Jaswinder Singh <jassi.brar@samsung.com>");
MODULE_DESCRIPTION("API Driver for PL330 DMAC");
diff --git a/drivers/input/serio/ambakmi.c b/drivers/input/serio/ambakmi.c
index 8407d5b0ced..2ffd110bd5b 100644
--- a/drivers/input/serio/ambakmi.c
+++ b/drivers/input/serio/ambakmi.c
@@ -208,18 +208,7 @@ static struct amba_driver ambakmi_driver = {
.resume = amba_kmi_resume,
};
-static int __init amba_kmi_init(void)
-{
- return amba_driver_register(&ambakmi_driver);
-}
-
-static void __exit amba_kmi_exit(void)
-{
- amba_driver_unregister(&ambakmi_driver);
-}
-
-module_init(amba_kmi_init);
-module_exit(amba_kmi_exit);
+module_amba_driver(ambakmi_driver);
MODULE_AUTHOR("Russell King <rmk@arm.linux.org.uk>");
MODULE_DESCRIPTION("AMBA KMI controller driver");
diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
index bdfd05517dd..983e244eca7 100644
--- a/drivers/mmc/host/mmci.c
+++ b/drivers/mmc/host/mmci.c
@@ -53,6 +53,8 @@ static unsigned int fmax = 515633;
* @sdio: variant supports SDIO
* @st_clkdiv: true if using a ST-specific clock divider algorithm
* @blksz_datactrl16: true if Block size is at b16..b30 position in datactrl register
+ * @pwrreg_powerup: power up value for MMCIPOWER register
+ * @signal_direction: input/out direction of bus signals can be indicated
*/
struct variant_data {
unsigned int clkreg;
@@ -63,18 +65,22 @@ struct variant_data {
bool sdio;
bool st_clkdiv;
bool blksz_datactrl16;
+ u32 pwrreg_powerup;
+ bool signal_direction;
};
static struct variant_data variant_arm = {
.fifosize = 16 * 4,
.fifohalfsize = 8 * 4,
.datalength_bits = 16,
+ .pwrreg_powerup = MCI_PWR_UP,
};
static struct variant_data variant_arm_extended_fifo = {
.fifosize = 128 * 4,
.fifohalfsize = 64 * 4,
.datalength_bits = 16,
+ .pwrreg_powerup = MCI_PWR_UP,
};
static struct variant_data variant_u300 = {
@@ -83,6 +89,8 @@ static struct variant_data variant_u300 = {
.clkreg_enable = MCI_ST_U300_HWFCEN,
.datalength_bits = 16,
.sdio = true,
+ .pwrreg_powerup = MCI_PWR_ON,
+ .signal_direction = true,
};
static struct variant_data variant_ux500 = {
@@ -93,6 +101,8 @@ static struct variant_data variant_ux500 = {
.datalength_bits = 24,
.sdio = true,
.st_clkdiv = true,
+ .pwrreg_powerup = MCI_PWR_ON,
+ .signal_direction = true,
};
static struct variant_data variant_ux500v2 = {
@@ -104,11 +114,35 @@ static struct variant_data variant_ux500v2 = {
.sdio = true,
.st_clkdiv = true,
.blksz_datactrl16 = true,
+ .pwrreg_powerup = MCI_PWR_ON,
+ .signal_direction = true,
};
/*
* This must be called with host->lock held
*/
+static void mmci_write_clkreg(struct mmci_host *host, u32 clk)
+{
+ if (host->clk_reg != clk) {
+ host->clk_reg = clk;
+ writel(clk, host->base + MMCICLOCK);
+ }
+}
+
+/*
+ * This must be called with host->lock held
+ */
+static void mmci_write_pwrreg(struct mmci_host *host, u32 pwr)
+{
+ if (host->pwr_reg != pwr) {
+ host->pwr_reg = pwr;
+ writel(pwr, host->base + MMCIPOWER);
+ }
+}
+
+/*
+ * This must be called with host->lock held
+ */
static void mmci_set_clkreg(struct mmci_host *host, unsigned int desired)
{
struct variant_data *variant = host->variant;
@@ -153,7 +187,7 @@ static void mmci_set_clkreg(struct mmci_host *host, unsigned int desired)
if (host->mmc->ios.bus_width == MMC_BUS_WIDTH_8)
clk |= MCI_ST_8BIT_BUS;
- writel(clk, host->base + MMCICLOCK);
+ mmci_write_clkreg(host, clk);
}
static void
@@ -166,14 +200,10 @@ mmci_request_end(struct mmci_host *host, struct mmc_request *mrq)
host->mrq = NULL;
host->cmd = NULL;
- /*
- * Need to drop the host lock here; mmc_request_done may call
- * back into the driver...
- */
- spin_unlock(&host->lock);
- pm_runtime_put(mmc_dev(host->mmc));
mmc_request_done(host->mmc, mrq);
- spin_lock(&host->lock);
+
+ pm_runtime_mark_last_busy(mmc_dev(host->mmc));
+ pm_runtime_put_autosuspend(mmc_dev(host->mmc));
}
static void mmci_set_mask1(struct mmci_host *host, unsigned int mask)
@@ -607,6 +637,11 @@ static void mmci_start_data(struct mmci_host *host, struct mmc_data *data)
if (data->flags & MMC_DATA_READ)
datactrl |= MCI_DPSM_DIRECTION;
+ /* The ST Micro variants has a special bit to enable SDIO */
+ if (variant->sdio && host->mmc->card)
+ if (mmc_card_sdio(host->mmc->card))
+ datactrl |= MCI_ST_DPSM_SDIOEN;
+
/*
* Attempt to use DMA operation mode, if this
* should fail, fall back to PIO mode
@@ -635,11 +670,6 @@ static void mmci_start_data(struct mmci_host *host, struct mmc_data *data)
irqmask = MCI_TXFIFOHALFEMPTYMASK;
}
- /* The ST Micro variants has a special bit to enable SDIO */
- if (variant->sdio && host->mmc->card)
- if (mmc_card_sdio(host->mmc->card))
- datactrl |= MCI_ST_DPSM_SDIOEN;
-
writel(datactrl, base + MMCIDATACTRL);
writel(readl(base + MMCIMASK0) & ~MCI_DATAENDMASK, base + MMCIMASK0);
mmci_set_mask1(host, irqmask);
@@ -786,7 +816,24 @@ static int mmci_pio_read(struct mmci_host *host, char *buffer, unsigned int rema
if (count <= 0)
break;
- readsl(base + MMCIFIFO, ptr, count >> 2);
+ /*
+ * SDIO especially may want to send something that is
+ * not divisible by 4 (as opposed to card sectors
+ * etc). Therefore make sure to always read the last bytes
+ * while only doing full 32-bit reads towards the FIFO.
+ */
+ if (unlikely(count & 0x3)) {
+ if (count < 4) {
+ unsigned char buf[4];
+ readsl(base + MMCIFIFO, buf, 1);
+ memcpy(ptr, buf, count);
+ } else {
+ readsl(base + MMCIFIFO, ptr, count >> 2);
+ count &= ~0x3;
+ }
+ } else {
+ readsl(base + MMCIFIFO, ptr, count >> 2);
+ }
ptr += count;
remain -= count;
@@ -821,14 +868,13 @@ static int mmci_pio_write(struct mmci_host *host, char *buffer, unsigned int rem
*/
if (variant->sdio &&
mmc_card_sdio(host->mmc->card)) {
+ u32 clk;
if (count < 8)
- writel(readl(host->base + MMCICLOCK) &
- ~variant->clkreg_enable,
- host->base + MMCICLOCK);
+ clk = host->clk_reg & ~variant->clkreg_enable;
else
- writel(readl(host->base + MMCICLOCK) |
- variant->clkreg_enable,
- host->base + MMCICLOCK);
+ clk = host->clk_reg | variant->clkreg_enable;
+
+ mmci_write_clkreg(host, clk);
}
/*
@@ -1015,10 +1061,17 @@ static void mmci_request(struct mmc_host *mmc, struct mmc_request *mrq)
static void mmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
{
struct mmci_host *host = mmc_priv(mmc);
+ struct variant_data *variant = host->variant;
u32 pwr = 0;
unsigned long flags;
int ret;
+ pm_runtime_get_sync(mmc_dev(mmc));
+
+ if (host->plat->ios_handler &&
+ host->plat->ios_handler(mmc_dev(mmc), ios))
+ dev_err(mmc_dev(mmc), "platform ios_handler failed\n");
+
switch (ios->power_mode) {
case MMC_POWER_OFF:
if (host->vcc)
@@ -1035,22 +1088,38 @@ static void mmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
* power should be rare so we print an error
* and return here.
*/
- return;
+ goto out;
}
}
- if (host->plat->vdd_handler)
- pwr |= host->plat->vdd_handler(mmc_dev(mmc), ios->vdd,
- ios->power_mode);
- /* The ST version does not have this, fall through to POWER_ON */
- if (host->hw_designer != AMBA_VENDOR_ST) {
- pwr |= MCI_PWR_UP;
- break;
- }
+ /*
+ * The ST Micro variant doesn't have the PL180s MCI_PWR_UP
+ * and instead uses MCI_PWR_ON so apply whatever value is
+ * configured in the variant data.
+ */
+ pwr |= variant->pwrreg_powerup;
+
+ break;
case MMC_POWER_ON:
pwr |= MCI_PWR_ON;
break;
}
+ if (variant->signal_direction && ios->power_mode != MMC_POWER_OFF) {
+ /*
+ * The ST Micro variant has some additional bits
+ * indicating signal direction for the signals in
+ * the SD/MMC bus and feedback-clock usage.
+ */
+ pwr |= host->plat->sigdir;
+
+ if (ios->bus_width == MMC_BUS_WIDTH_4)
+ pwr &= ~MCI_ST_DATA74DIREN;
+ else if (ios->bus_width == MMC_BUS_WIDTH_1)
+ pwr &= (~MCI_ST_DATA74DIREN &
+ ~MCI_ST_DATA31DIREN &
+ ~MCI_ST_DATA2DIREN);
+ }
+
if (ios->bus_mode == MMC_BUSMODE_OPENDRAIN) {
if (host->hw_designer != AMBA_VENDOR_ST)
pwr |= MCI_ROD;
@@ -1066,13 +1135,13 @@ static void mmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
spin_lock_irqsave(&host->lock, flags);
mmci_set_clkreg(host, ios->clock);
-
- if (host->pwr != pwr) {
- host->pwr = pwr;
- writel(pwr, host->base + MMCIPOWER);
- }
+ mmci_write_pwrreg(host, pwr);
spin_unlock_irqrestore(&host->lock, flags);
+
+ out:
+ pm_runtime_mark_last_busy(mmc_dev(mmc));
+ pm_runtime_put_autosuspend(mmc_dev(mmc));
}
static int mmci_get_ro(struct mmc_host *mmc)
@@ -1346,6 +1415,8 @@ static int __devinit mmci_probe(struct amba_device *dev,
mmci_dma_setup(host);
+ pm_runtime_set_autosuspend_delay(&dev->dev, 50);
+ pm_runtime_use_autosuspend(&dev->dev);
pm_runtime_put(&dev->dev);
mmc_add_host(mmc);
@@ -1430,43 +1501,49 @@ static int __devexit mmci_remove(struct amba_device *dev)
return 0;
}
-#ifdef CONFIG_PM
-static int mmci_suspend(struct amba_device *dev, pm_message_t state)
+#ifdef CONFIG_SUSPEND
+static int mmci_suspend(struct device *dev)
{
- struct mmc_host *mmc = amba_get_drvdata(dev);
+ struct amba_device *adev = to_amba_device(dev);
+ struct mmc_host *mmc = amba_get_drvdata(adev);
int ret = 0;
if (mmc) {
struct mmci_host *host = mmc_priv(mmc);
ret = mmc_suspend_host(mmc);
- if (ret == 0)
+ if (ret == 0) {
+ pm_runtime_get_sync(dev);
writel(0, host->base + MMCIMASK0);
+ }
}
return ret;
}
-static int mmci_resume(struct amba_device *dev)
+static int mmci_resume(struct device *dev)
{
- struct mmc_host *mmc = amba_get_drvdata(dev);
+ struct amba_device *adev = to_amba_device(dev);
+ struct mmc_host *mmc = amba_get_drvdata(adev);
int ret = 0;
if (mmc) {
struct mmci_host *host = mmc_priv(mmc);
writel(MCI_IRQENABLE, host->base + MMCIMASK0);
+ pm_runtime_put(dev);
ret = mmc_resume_host(mmc);
}
return ret;
}
-#else
-#define mmci_suspend NULL
-#define mmci_resume NULL
#endif
+static const struct dev_pm_ops mmci_dev_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(mmci_suspend, mmci_resume)
+};
+
static struct amba_id mmci_ids[] = {
{
.id = 0x00041180,
@@ -1512,26 +1589,15 @@ MODULE_DEVICE_TABLE(amba, mmci_ids);
static struct amba_driver mmci_driver = {
.drv = {
.name = DRIVER_NAME,
+ .pm = &mmci_dev_pm_ops,
},
.probe = mmci_probe,
.remove = __devexit_p(mmci_remove),
- .suspend = mmci_suspend,
- .resume = mmci_resume,
.id_table = mmci_ids,
};
-static int __init mmci_init(void)
-{
- return amba_driver_register(&mmci_driver);
-}
-
-static void __exit mmci_exit(void)
-{
- amba_driver_unregister(&mmci_driver);
-}
+module_amba_driver(mmci_driver);
-module_init(mmci_init);
-module_exit(mmci_exit);
module_param(fmax, uint, 0444);
MODULE_DESCRIPTION("ARM PrimeCell PL180/181 Multimedia Card Interface driver");
diff --git a/drivers/mmc/host/mmci.h b/drivers/mmc/host/mmci.h
index 79e4143ab9d..d437ccf62d6 100644
--- a/drivers/mmc/host/mmci.h
+++ b/drivers/mmc/host/mmci.h
@@ -13,16 +13,6 @@
#define MCI_PWR_ON 0x03
#define MCI_OD (1 << 6)
#define MCI_ROD (1 << 7)
-/*
- * The ST Micro version does not have ROD and reuse the voltage registers
- * for direction settings
- */
-#define MCI_ST_DATA2DIREN (1 << 2)
-#define MCI_ST_CMDDIREN (1 << 3)
-#define MCI_ST_DATA0DIREN (1 << 4)
-#define MCI_ST_DATA31DIREN (1 << 5)
-#define MCI_ST_FBCLKEN (1 << 7)
-#define MCI_ST_DATA74DIREN (1 << 8)
#define MMCICLOCK 0x004
#define MCI_CLK_ENABLE (1 << 8)
@@ -160,7 +150,7 @@
(MCI_RXFIFOHALFFULLMASK | MCI_RXDATAAVLBLMASK | \
MCI_TXFIFOHALFEMPTYMASK)
-#define NR_SG 16
+#define NR_SG 128
struct clk;
struct variant_data;
@@ -189,7 +179,8 @@ struct mmci_host {
unsigned int mclk;
unsigned int cclk;
- u32 pwr;
+ u32 pwr_reg;
+ u32 clk_reg;
struct mmci_platform_data *plat;
struct variant_data *variant;
diff --git a/drivers/rtc/rtc-pl030.c b/drivers/rtc/rtc-pl030.c
index a4a1e534ed4..22bacdbf913 100644
--- a/drivers/rtc/rtc-pl030.c
+++ b/drivers/rtc/rtc-pl030.c
@@ -185,18 +185,7 @@ static struct amba_driver pl030_driver = {
.id_table = pl030_ids,
};
-static int __init pl030_init(void)
-{
- return amba_driver_register(&pl030_driver);
-}
-
-static void __exit pl030_exit(void)
-{
- amba_driver_unregister(&pl030_driver);
-}
-
-module_init(pl030_init);
-module_exit(pl030_exit);
+module_amba_driver(pl030_driver);
MODULE_AUTHOR("Russell King <rmk@arm.linux.org.uk>");
MODULE_DESCRIPTION("ARM AMBA PL030 RTC Driver");
diff --git a/drivers/rtc/rtc-pl031.c b/drivers/rtc/rtc-pl031.c
index 3a470e29128..692de7360e9 100644
--- a/drivers/rtc/rtc-pl031.c
+++ b/drivers/rtc/rtc-pl031.c
@@ -431,18 +431,7 @@ static struct amba_driver pl031_driver = {
.remove = pl031_remove,
};
-static int __init pl031_init(void)
-{
- return amba_driver_register(&pl031_driver);
-}
-
-static void __exit pl031_exit(void)
-{
- amba_driver_unregister(&pl031_driver);
-}
-
-module_init(pl031_init);
-module_exit(pl031_exit);
+module_amba_driver(pl031_driver);
MODULE_AUTHOR("Deepak Saxena <dsaxena@plexity.net");
MODULE_DESCRIPTION("ARM AMBA PL031 RTC Driver");
diff --git a/drivers/watchdog/sp805_wdt.c b/drivers/watchdog/sp805_wdt.c
index eef1524ae52..3ff9e47bd21 100644
--- a/drivers/watchdog/sp805_wdt.c
+++ b/drivers/watchdog/sp805_wdt.c
@@ -370,17 +370,7 @@ static struct amba_driver sp805_wdt_driver = {
.remove = __devexit_p(sp805_wdt_remove),
};
-static int __init sp805_wdt_init(void)
-{
- return amba_driver_register(&sp805_wdt_driver);
-}
-module_init(sp805_wdt_init);
-
-static void __exit sp805_wdt_exit(void)
-{
- amba_driver_unregister(&sp805_wdt_driver);
-}
-module_exit(sp805_wdt_exit);
+module_amba_driver(sp805_wdt_driver);
module_param(nowayout, int, 0);
MODULE_PARM_DESC(nowayout,