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mmc: mmci: Enforce DT for signal direction and feedback clock 

Remove the option to provide signal direction configuration and
feeback clock as platform data, enforce it through DT.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Ulf Hansson 2014-03-21 10:13:05 +01:00
parent 363b8b46da
commit 4593df29b9
3 changed files with 26 additions and 37 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

36
drivers/mmc/host/mmci.c
View File

@ -1287,7 +1287,7 @@ static void mmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
* indicating signal direction for the signals in
* the SD/MMC bus and feedback-clock usage.
*/
pwr |= host->plat->sigdir;
pwr |= host->pwr_reg_add;
if (ios->bus_width == MMC_BUS_WIDTH_4)
pwr &= ~MCI_ST_DATA74DIREN;
@ -1386,30 +1386,27 @@ static struct mmc_host_ops mmci_ops = {
.start_signal_voltage_switch = mmci_sig_volt_switch,
};
static void mmci_dt_populate_generic_pdata(struct device_node *np,
struct mmci_platform_data *pdata)
{
if (of_get_property(np, "st,sig-dir-dat0", NULL))
pdata->sigdir |= MCI_ST_DATA0DIREN;
if (of_get_property(np, "st,sig-dir-dat2", NULL))
pdata->sigdir |= MCI_ST_DATA2DIREN;
if (of_get_property(np, "st,sig-dir-dat31", NULL))
pdata->sigdir |= MCI_ST_DATA31DIREN;
if (of_get_property(np, "st,sig-dir-dat74", NULL))
pdata->sigdir |= MCI_ST_DATA74DIREN;
if (of_get_property(np, "st,sig-dir-cmd", NULL))
pdata->sigdir |= MCI_ST_CMDDIREN;
if (of_get_property(np, "st,sig-pin-fbclk", NULL))
pdata->sigdir |= MCI_ST_FBCLKEN;
}
static int mmci_of_parse(struct device_node *np, struct mmc_host *mmc)
{
struct mmci_host *host = mmc_priv(mmc);
int ret = mmc_of_parse(mmc);
if (ret)
return ret;
if (of_get_property(np, "st,sig-dir-dat0", NULL))
host->pwr_reg_add |= MCI_ST_DATA0DIREN;
if (of_get_property(np, "st,sig-dir-dat2", NULL))
host->pwr_reg_add |= MCI_ST_DATA2DIREN;
if (of_get_property(np, "st,sig-dir-dat31", NULL))
host->pwr_reg_add |= MCI_ST_DATA31DIREN;
if (of_get_property(np, "st,sig-dir-dat74", NULL))
host->pwr_reg_add |= MCI_ST_DATA74DIREN;
if (of_get_property(np, "st,sig-dir-cmd", NULL))
host->pwr_reg_add |= MCI_ST_CMDDIREN;
if (of_get_property(np, "st,sig-pin-fbclk", NULL))
host->pwr_reg_add |= MCI_ST_FBCLKEN;
if (of_get_property(np, "mmc-cap-mmc-highspeed", NULL))
mmc->caps |= MMC_CAP_MMC_HIGHSPEED;
if (of_get_property(np, "mmc-cap-sd-highspeed", NULL))
@ -1440,9 +1437,6 @@ static int mmci_probe(struct amba_device *dev,
return -ENOMEM;
}
if (np)
mmci_dt_populate_generic_pdata(np, plat);
mmc = mmc_alloc_host(sizeof(struct mmci_host), &dev->dev);
if (!mmc)
return -ENOMEM;

11
drivers/mmc/host/mmci.h
View File

@ -13,6 +13,16 @@
#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)
@ -183,6 +193,7 @@ struct mmci_host {
unsigned int mclk;
unsigned int cclk;
u32 pwr_reg;
u32 pwr_reg_add;
u32 clk_reg;
u32 datactrl_reg;
u32 busy_status;

16
include/linux/amba/mmci.h
View File

@ -6,19 +6,6 @@
#include <linux/mmc/host.h>
/*
* These defines is places here due to access is needed from machine
* configuration files. 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)
/* Just some dummy forwarding */
struct dma_chan;
@ -45,8 +32,6 @@ struct dma_chan;
* @capabilities: the capabilities of the block as implemented in
* this platform, signify anything MMC_CAP_* from mmc/host.h
* @capabilities2: more capabilities, MMC_CAP2_* from mmc/host.h
* @sigdir: a bit field indicating for what bits in the MMC bus the host
* should enable signal direction indication.
* @dma_filter: function used to select an appropriate RX and TX
* DMA channel to be used for DMA, if and only if you're deploying the
* generic DMA engine
@ -69,7 +54,6 @@ struct mmci_platform_data {
bool cd_invert;
unsigned long capabilities;
unsigned long capabilities2;
u32 sigdir;
bool (*dma_filter)(struct dma_chan *chan, void *filter_param);
void *dma_rx_param;
void *dma_tx_param;