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mmc: sdhci: move FSL ESDHC reset handling quirk into esdhc code 

The Freescale esdhc driver is the only driver which needs the interrupt
registers restored after a reset.  Move this quirk to be part of the
ESDHC driver implementation.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Tested-by: Markus Pargmann <mpa@pengutronix.de>
Tested-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Chris Ball <chris@printf.net>
This commit is contained in:
Russell King 2014-04-25 12:57:18 +01:00 committed by Chris Ball
parent 03231f9b78
commit 0718e59ae2
4 changed files with 10 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
drivers/mmc/host/sdhci-esdhc-imx.c
View File

@ -876,6 +876,14 @@ static int esdhc_set_uhs_signaling(struct sdhci_host *host, unsigned int uhs)
return esdhc_change_pinstate(host, uhs);
}
static void esdhc_reset(struct sdhci_host *host, u8 mask)
{
sdhci_reset(host, mask);
sdhci_writel(host, host->ier, SDHCI_INT_ENABLE);
sdhci_writel(host, host->ier, SDHCI_SIGNAL_ENABLE);
}
static struct sdhci_ops sdhci_esdhc_ops = {
.read_l = esdhc_readl_le,
.read_w = esdhc_readw_le,
@ -888,7 +896,7 @@ static struct sdhci_ops sdhci_esdhc_ops = {
.get_ro = esdhc_pltfm_get_ro,
.set_bus_width = esdhc_pltfm_set_bus_width,
.set_uhs_signaling = esdhc_set_uhs_signaling,
.reset = sdhci_reset,
.reset = esdhc_reset,
};
static const struct sdhci_pltfm_data sdhci_esdhc_imx_pdata = {

3
drivers/mmc/host/sdhci-esdhc.h
View File

@ -22,8 +22,7 @@
SDHCI_QUIRK_NO_BUSY_IRQ | \
SDHCI_QUIRK_NONSTANDARD_CLOCK | \
SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK | \
SDHCI_QUIRK_PIO_NEEDS_DELAY | \
SDHCI_QUIRK_RESTORE_IRQS_AFTER_RESET)
SDHCI_QUIRK_PIO_NEEDS_DELAY)
#define ESDHC_SYSTEM_CONTROL 0x2c
#define ESDHC_CLOCK_MASK 0x0000fff0

5
drivers/mmc/host/sdhci.c
View File

@ -203,11 +203,6 @@ static void sdhci_do_reset(struct sdhci_host *host, u8 mask)
host->ops->reset(host, mask);
if (host->quirks & SDHCI_QUIRK_RESTORE_IRQS_AFTER_RESET) {
sdhci_writel(host, host->ier, SDHCI_INT_ENABLE);
sdhci_writel(host, host->ier, SDHCI_SIGNAL_ENABLE);
}
if (host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA)) {
if ((host->ops->enable_dma) && (mask & SDHCI_RESET_ALL))
host->ops->enable_dma(host);

2
include/linux/mmc/sdhci.h
View File

@ -61,8 +61,6 @@ struct sdhci_host {
#define SDHCI_QUIRK_NONSTANDARD_CLOCK (1<<17)
/* Controller does not like fast PIO transfers */
#define SDHCI_QUIRK_PIO_NEEDS_DELAY (1<<18)
/* Controller losing signal/interrupt enable states after reset */
#define SDHCI_QUIRK_RESTORE_IRQS_AFTER_RESET (1<<19)
/* Controller has to be forced to use block size of 2048 bytes */
#define SDHCI_QUIRK_FORCE_BLK_SZ_2048 (1<<20)
/* Controller cannot do multi-block transfers */