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Commit 33fa108e authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc 

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc:
  sdhci-of: Fix the wrong accessor to HOSTVER register
  mvsdio: fix config failure with some high speed SDHC cards
  mvsdio: ignore high speed timing requests from the core
  mmc/omap: Use disable_irq_nosync() from within irq handlers.
  sdhci-of: Add fsl,esdhc as a valid compatible to bind against
  mvsdio: allow automatic loading when modular
  mxcmmc: Fix missing return value checking in DMA setup code.
  mxcmmc : Reset the SDHC hardware if software timeout occurs.
  omap_hsmmc: Trivial fix for a typo in comment
  mxcmmc: decrease minimum frequency to make MMC cards work
parents ccc0d38e fbf6a5fc

drivers/mmc/host/mvsdio.c

+35 −0
Original line number Diff line number Diff line
@@ -64,6 +64,31 @@ static int mvsd_setup_data(struct mvsd_host *host, struct mmc_data *data) 
	unsigned int tmout;

	int tmout_index;



	/*

	 * Hardware weirdness.  The FIFO_EMPTY bit of the HW_STATE

	 * register is sometimes not set before a while when some

	 * "unusual" data block sizes are used (such as with the SWITCH

	 * command), even despite the fact that the XFER_DONE interrupt

	 * was raised.  And if another data transfer starts before

	 * this bit comes to good sense (which eventually happens by

	 * itself) then the new transfer simply fails with a timeout.

	 */

	if (!(mvsd_read(MVSD_HW_STATE) & (1 << 13))) {

		unsigned long t = jiffies + HZ;

		unsigned int hw_state,  count = 0;

		do {

			if (time_after(jiffies, t)) {

				dev_warn(host->dev, "FIFO_EMPTY bit missing\n");

				break;

			}

			hw_state = mvsd_read(MVSD_HW_STATE);

			count++;

		} while (!(hw_state & (1 << 13)));

		dev_dbg(host->dev, "*** wait for FIFO_EMPTY bit "

				   "(hw=0x%04x, count=%d, jiffies=%ld)\n",

				   hw_state, count, jiffies - (t - HZ));

	}



	/* If timeout=0 then maximum timeout index is used. */

	tmout = DIV_ROUND_UP(data->timeout_ns, host->ns_per_clk);

	tmout += data->timeout_clks;
@@ -620,9 +645,18 @@ static void mvsd_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) 
	if (ios->bus_width == MMC_BUS_WIDTH_4)

		ctrl_reg |= MVSD_HOST_CTRL_DATA_WIDTH_4_BITS;



	/*

	 * The HI_SPEED_EN bit is causing trouble with many (but not all)

	 * high speed SD, SDHC and SDIO cards.  Not enabling that bit

	 * makes all cards work.  So let's just ignore that bit for now

	 * and revisit this issue if problems for not enabling this bit

	 * are ever reported.

	 */

#if 0

	if (ios->timing == MMC_TIMING_MMC_HS ||

	    ios->timing == MMC_TIMING_SD_HS)

		ctrl_reg |= MVSD_HOST_CTRL_HI_SPEED_EN;

#endif



	host->ctrl = ctrl_reg;

	mvsd_write(MVSD_HOST_CTRL, ctrl_reg);
@@ -882,3 +916,4 @@ module_param(nodma, int, 0); 
MODULE_AUTHOR("Maen Suleiman, Nicolas Pitre");

MODULE_DESCRIPTION("Marvell MMC,SD,SDIO Host Controller driver");

MODULE_LICENSE("GPL");

MODULE_ALIAS("platform:mvsdio");

drivers/mmc/host/mxcmmc.c

+35 −12
Original line number Diff line number Diff line
@@ -140,6 +140,8 @@ struct mxcmci_host { 
	struct work_struct	datawork;

};



static void mxcmci_set_clk_rate(struct mxcmci_host *host, unsigned int clk_ios);



static inline int mxcmci_use_dma(struct mxcmci_host *host)

{

	return host->do_dma;
@@ -160,7 +162,7 @@ static void mxcmci_softreset(struct mxcmci_host *host) 
	writew(0xff, host->base + MMC_REG_RES_TO);

}



static void mxcmci_setup_data(struct mxcmci_host *host, struct mmc_data *data)

static int mxcmci_setup_data(struct mxcmci_host *host, struct mmc_data *data)

{

	unsigned int nob = data->blocks;

	unsigned int blksz = data->blksz;
@@ -168,6 +170,7 @@ static void mxcmci_setup_data(struct mxcmci_host *host, struct mmc_data *data) 
#ifdef HAS_DMA

	struct scatterlist *sg;

	int i;

	int ret;

#endif

	if (data->flags & MMC_DATA_STREAM)

		nob = 0xffff;
@@ -183,7 +186,7 @@ static void mxcmci_setup_data(struct mxcmci_host *host, struct mmc_data *data) 
	for_each_sg(data->sg, sg, data->sg_len, i) {

		if (sg->offset & 3 || sg->length & 3) {

			host->do_dma = 0;

			return;

			return 0;

		}

	}
@@ -192,7 +195,8 @@ static void mxcmci_setup_data(struct mxcmci_host *host, struct mmc_data *data) 
		host->dma_nents = dma_map_sg(mmc_dev(host->mmc), data->sg,

					     data->sg_len,  host->dma_dir);



		imx_dma_setup_sg(host->dma, data->sg, host->dma_nents, datasize,

		ret = imx_dma_setup_sg(host->dma, data->sg, host->dma_nents,

				datasize,

				host->res->start + MMC_REG_BUFFER_ACCESS,

				DMA_MODE_READ);

	} else {
@@ -200,15 +204,21 @@ static void mxcmci_setup_data(struct mxcmci_host *host, struct mmc_data *data) 
		host->dma_nents = dma_map_sg(mmc_dev(host->mmc), data->sg,

					     data->sg_len,  host->dma_dir);



		imx_dma_setup_sg(host->dma, data->sg, host->dma_nents, datasize,

		ret = imx_dma_setup_sg(host->dma, data->sg, host->dma_nents,

				datasize,

				host->res->start + MMC_REG_BUFFER_ACCESS,

				DMA_MODE_WRITE);

	}



	if (ret) {

		dev_err(mmc_dev(host->mmc), "failed to setup DMA : %d\n", ret);

		return ret;

	}

	wmb();



	imx_dma_enable(host->dma);

#endif /* HAS_DMA */

	return 0;

}



static int mxcmci_start_cmd(struct mxcmci_host *host, struct mmc_command *cmd,
@@ -345,8 +355,11 @@ static int mxcmci_poll_status(struct mxcmci_host *host, u32 mask) 
		stat = readl(host->base + MMC_REG_STATUS);

		if (stat & STATUS_ERR_MASK)

			return stat;

		if (time_after(jiffies, timeout))

		if (time_after(jiffies, timeout)) {

			mxcmci_softreset(host);

			mxcmci_set_clk_rate(host, host->clock);

			return STATUS_TIME_OUT_READ;

		}

		if (stat & mask)

			return 0;

		cpu_relax();
@@ -531,6 +544,7 @@ static void mxcmci_request(struct mmc_host *mmc, struct mmc_request *req) 
{

	struct mxcmci_host *host = mmc_priv(mmc);

	unsigned int cmdat = host->cmdat;

	int error;



	WARN_ON(host->req != NULL);
@@ -540,7 +554,12 @@ static void mxcmci_request(struct mmc_host *mmc, struct mmc_request *req) 
	host->do_dma = 1;

#endif

	if (req->data) {

		mxcmci_setup_data(host, req->data);

		error = mxcmci_setup_data(host, req->data);

		if (error) {

			req->cmd->error = error;

			goto out;

		}





		cmdat |= CMD_DAT_CONT_DATA_ENABLE;
@@ -548,7 +567,9 @@ static void mxcmci_request(struct mmc_host *mmc, struct mmc_request *req) 
			cmdat |= CMD_DAT_CONT_WRITE;

	}



	if (mxcmci_start_cmd(host, req->cmd, cmdat))

	error = mxcmci_start_cmd(host, req->cmd, cmdat);

out:

	if (error)

		mxcmci_finish_request(host, req);

}
@@ -724,7 +745,9 @@ static int mxcmci_probe(struct platform_device *pdev) 
		goto out_clk_put;

	}



	mmc->f_min = clk_get_rate(host->clk) >> 7;

	mmc->f_min = clk_get_rate(host->clk) >> 16;

	if (mmc->f_min < 400000)

		mmc->f_min = 400000;

	mmc->f_max = clk_get_rate(host->clk) >> 1;



	/* recommended in data sheet */

drivers/mmc/host/omap.c

+1 −1
Original line number Diff line number Diff line
@@ -822,7 +822,7 @@ static irqreturn_t mmc_omap_irq(int irq, void *dev_id) 
		del_timer(&host->cmd_abort_timer);

		host->abort = 1;

		OMAP_MMC_WRITE(host, IE, 0);

		disable_irq(host->irq);

		disable_irq_nosync(host->irq);

		schedule_work(&host->cmd_abort_work);

		return IRQ_HANDLED;

	}

drivers/mmc/host/omap_hsmmc.c

+1 −1
Original line number Diff line number Diff line
@@ -680,7 +680,7 @@ static void mmc_omap_dma_cb(int lch, u16 ch_status, void *data) 
	host->dma_ch = -1;

	/*

	 * DMA Callback: run in interrupt context.

	 * mutex_unlock will through a kernel warning if used.

	 * mutex_unlock will throw a kernel warning if used.

	 */

	up(&host->sem);

}

drivers/mmc/host/sdhci-of.c

+8 −1
Original line number Diff line number Diff line
@@ -55,7 +55,13 @@ static u32 esdhc_readl(struct sdhci_host *host, int reg) 


static u16 esdhc_readw(struct sdhci_host *host, int reg)

{

	return in_be16(host->ioaddr + (reg ^ 0x2));

	u16 ret;



	if (unlikely(reg == SDHCI_HOST_VERSION))

		ret = in_be16(host->ioaddr + reg);

	else

		ret = in_be16(host->ioaddr + (reg ^ 0x2));

	return ret;

}



static u8 esdhc_readb(struct sdhci_host *host, int reg)
@@ -277,6 +283,7 @@ static int __devexit sdhci_of_remove(struct of_device *ofdev) 
static const struct of_device_id sdhci_of_match[] = {

	{ .compatible = "fsl,mpc8379-esdhc", .data = &sdhci_esdhc, },

	{ .compatible = "fsl,mpc8536-esdhc", .data = &sdhci_esdhc, },

	{ .compatible = "fsl,esdhc", .data = &sdhci_esdhc, },

	{ .compatible = "generic-sdhci", },

	{},

};