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Commit 4593df29 authored by Ulf Hansson's avatar Ulf Hansson
Browse files

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: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent 363b8b46

drivers/mmc/host/mmci.c

+14 −20
Original line number Original line Diff line number Diff line
@@ -1287,7 +1287,7 @@ static void mmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) 
		 * indicating signal direction for the signals in

		 * indicating signal direction for the signals in

		 * the SD/MMC bus and feedback-clock usage.

		 * 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)

		if (ios->bus_width == MMC_BUS_WIDTH_4)

			pwr &= ~MCI_ST_DATA74DIREN;

			pwr &= ~MCI_ST_DATA74DIREN;
@@ -1386,29 +1386,26 @@ static struct mmc_host_ops mmci_ops = { 
	.start_signal_voltage_switch = mmci_sig_volt_switch,

	.start_signal_voltage_switch = mmci_sig_volt_switch,

};

};





static void mmci_dt_populate_generic_pdata(struct device_node *np,

static int mmci_of_parse(struct device_node *np, struct mmc_host *mmc)

					struct mmci_platform_data *pdata)

{

{

	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))

	if (of_get_property(np, "st,sig-dir-dat0", NULL))

		pdata->sigdir |= MCI_ST_DATA0DIREN;

		host->pwr_reg_add |= MCI_ST_DATA0DIREN;

	if (of_get_property(np, "st,sig-dir-dat2", NULL))

	if (of_get_property(np, "st,sig-dir-dat2", NULL))

		pdata->sigdir |= MCI_ST_DATA2DIREN;

		host->pwr_reg_add |= MCI_ST_DATA2DIREN;

	if (of_get_property(np, "st,sig-dir-dat31", NULL))

	if (of_get_property(np, "st,sig-dir-dat31", NULL))

		pdata->sigdir |= MCI_ST_DATA31DIREN;

		host->pwr_reg_add |= MCI_ST_DATA31DIREN;

	if (of_get_property(np, "st,sig-dir-dat74", NULL))

	if (of_get_property(np, "st,sig-dir-dat74", NULL))

		pdata->sigdir |= MCI_ST_DATA74DIREN;

		host->pwr_reg_add |= MCI_ST_DATA74DIREN;

	if (of_get_property(np, "st,sig-dir-cmd", NULL))

	if (of_get_property(np, "st,sig-dir-cmd", NULL))

		pdata->sigdir |= MCI_ST_CMDDIREN;

		host->pwr_reg_add |= MCI_ST_CMDDIREN;

	if (of_get_property(np, "st,sig-pin-fbclk", NULL))

	if (of_get_property(np, "st,sig-pin-fbclk", NULL))

		pdata->sigdir |= MCI_ST_FBCLKEN;

		host->pwr_reg_add |= MCI_ST_FBCLKEN;

}



static int mmci_of_parse(struct device_node *np, struct mmc_host *mmc)

{

	int ret = mmc_of_parse(mmc);



	if (ret)

		return ret;





	if (of_get_property(np, "mmc-cap-mmc-highspeed", NULL))

	if (of_get_property(np, "mmc-cap-mmc-highspeed", NULL))

		mmc->caps |= MMC_CAP_MMC_HIGHSPEED;

		mmc->caps |= MMC_CAP_MMC_HIGHSPEED;
@@ -1440,9 +1437,6 @@ static int mmci_probe(struct amba_device *dev, 
			return -ENOMEM;

			return -ENOMEM;

	}

	}





	if (np)

		mmci_dt_populate_generic_pdata(np, plat);



	mmc = mmc_alloc_host(sizeof(struct mmci_host), &dev->dev);

	mmc = mmc_alloc_host(sizeof(struct mmci_host), &dev->dev);

	if (!mmc)

	if (!mmc)

		return -ENOMEM;

		return -ENOMEM;

drivers/mmc/host/mmci.h

+11 −0
Original line number Original line Diff line number Diff line
@@ -13,6 +13,16 @@ 
#define MCI_PWR_ON		0x03

#define MCI_PWR_ON		0x03

#define MCI_OD			(1 << 6)

#define MCI_OD			(1 << 6)

#define MCI_ROD			(1 << 7)

#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 MMCICLOCK		0x004

#define MCI_CLK_ENABLE		(1 << 8)

#define MCI_CLK_ENABLE		(1 << 8)
@@ -183,6 +193,7 @@ struct mmci_host { 
	unsigned int		mclk;

	unsigned int		mclk;

	unsigned int		cclk;

	unsigned int		cclk;

	u32			pwr_reg;

	u32			pwr_reg;

	u32			pwr_reg_add;

	u32			clk_reg;

	u32			clk_reg;

	u32			datactrl_reg;

	u32			datactrl_reg;

	u32			busy_status;

	u32			busy_status;

include/linux/amba/mmci.h

+0 −16
Original line number Original line Diff line number Diff line
@@ -6,19 +6,6 @@ 




#include <linux/mmc/host.h>

#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 */

/* Just some dummy forwarding */

struct dma_chan;

struct dma_chan;
@@ -45,8 +32,6 @@ struct dma_chan; 
 * @capabilities: the capabilities of the block as implemented in

 * @capabilities: the capabilities of the block as implemented in

 * this platform, signify anything MMC_CAP_* from mmc/host.h

 * this platform, signify anything MMC_CAP_* from mmc/host.h

 * @capabilities2: more capabilities, MMC_CAP2_* 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_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

 * DMA channel to be used for DMA, if and only if you're deploying the

 * generic DMA engine

 * generic DMA engine
@@ -69,7 +54,6 @@ struct mmci_platform_data { 
	bool	cd_invert;

	bool	cd_invert;

	unsigned long capabilities;

	unsigned long capabilities;

	unsigned long capabilities2;

	unsigned long capabilities2;

	u32 sigdir;

	bool (*dma_filter)(struct dma_chan *chan, void *filter_param);

	bool (*dma_filter)(struct dma_chan *chan, void *filter_param);

	void *dma_rx_param;

	void *dma_rx_param;

	void *dma_tx_param;

	void *dma_tx_param;