Release 4.7 drivers/mmc/host/sh_mmcif.c

/*
 * MMCIF eMMC driver.
 *
 * Copyright (C) 2010 Renesas Solutions Corp.
 * Yusuke Goda <yusuke.goda.sx@renesas.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License.
 *
 *
 * TODO
 *  1. DMA
 *  2. Power management
 *  3. Handle MMC errors better
 *
 */

/*
 * The MMCIF driver is now processing MMC requests asynchronously, according
 * to the Linux MMC API requirement.
 *
 * The MMCIF driver processes MMC requests in up to 3 stages: command, optional
 * data, and optional stop. To achieve asynchronous processing each of these
 * stages is split into two halves: a top and a bottom half. The top half
 * initialises the hardware, installs a timeout handler to handle completion
 * timeouts, and returns. In case of the command stage this immediately returns
 * control to the caller, leaving all further processing to run asynchronously.
 * All further request processing is performed by the bottom halves.
 *
 * The bottom half further consists of a "hard" IRQ handler, an IRQ handler
 * thread, a DMA completion callback, if DMA is used, a timeout work, and
 * request- and stage-specific handler methods.
 *
 * Each bottom half run begins with either a hardware interrupt, a DMA callback
 * invocation, or a timeout work run. In case of an error or a successful
 * processing completion, the MMC core is informed and the request processing is
 * finished. In case processing has to continue, i.e., if data has to be read
 * from or written to the card, or if a stop command has to be sent, the next
 * top half is called, which performs the necessary hardware handling and
 * reschedules the timeout work. This returns the driver state machine into the
 * bottom half waiting state.
 */

#include <linux/bitops.h>
#include <linux/clk.h>
#include <linux/completion.h>
#include <linux/delay.h>
#include <linux/dma-mapping.h>
#include <linux/dmaengine.h>
#include <linux/mmc/card.h>
#include <linux/mmc/core.h>
#include <linux/mmc/host.h>
#include <linux/mmc/mmc.h>
#include <linux/mmc/sdio.h>
#include <linux/mmc/sh_mmcif.h>
#include <linux/mmc/slot-gpio.h>
#include <linux/mod_devicetable.h>
#include <linux/mutex.h>
#include <linux/of_device.h>
#include <linux/pagemap.h>
#include <linux/platform_device.h>
#include <linux/pm_qos.h>
#include <linux/pm_runtime.h>
#include <linux/sh_dma.h>
#include <linux/spinlock.h>
#include <linux/module.h>


#define DRIVER_NAME	"sh_mmcif"

#define DRIVER_VERSION	"2010-04-28"

/* CE_CMD_SET */

#define CMD_MASK		0x3f000000

#define CMD_SET_RTYP_NO		((0 << 23) | (0 << 22))

#define CMD_SET_RTYP_6B		((0 << 23) | (1 << 22)) 
/* R1/R1b/R3/R4/R5 */

#define CMD_SET_RTYP_17B	((1 << 23) | (0 << 22)) 
/* R2 */

#define CMD_SET_RBSY		(1 << 21) 
/* R1b */

#define CMD_SET_CCSEN		(1 << 20)

#define CMD_SET_WDAT		(1 << 19) 
/* 1: on data, 0: no data */

#define CMD_SET_DWEN		(1 << 18) 
/* 1: write, 0: read */

#define CMD_SET_CMLTE		(1 << 17) 
/* 1: multi block trans, 0: single */

#define CMD_SET_CMD12EN		(1 << 16) 
/* 1: CMD12 auto issue */

#define CMD_SET_RIDXC_INDEX	((0 << 15) | (0 << 14)) 
/* index check */

#define CMD_SET_RIDXC_BITS	((0 << 15) | (1 << 14)) 
/* check bits check */

#define CMD_SET_RIDXC_NO	((1 << 15) | (0 << 14)) 
/* no check */

#define CMD_SET_CRC7C		((0 << 13) | (0 << 12)) 
/* CRC7 check*/

#define CMD_SET_CRC7C_BITS	((0 << 13) | (1 << 12)) 
/* check bits check*/

#define CMD_SET_CRC7C_INTERNAL	((1 << 13) | (0 << 12)) 
/* internal CRC7 check*/

#define CMD_SET_CRC16C		(1 << 10) 
/* 0: CRC16 check*/

#define CMD_SET_CRCSTE		(1 << 8) 
/* 1: not receive CRC status */

#define CMD_SET_TBIT		(1 << 7) 
/* 1: tran mission bit "Low" */

#define CMD_SET_OPDM		(1 << 6) 
/* 1: open/drain */

#define CMD_SET_CCSH		(1 << 5)

#define CMD_SET_DARS		(1 << 2) 
/* Dual Data Rate */

#define CMD_SET_DATW_1		((0 << 1) | (0 << 0)) 
/* 1bit */

#define CMD_SET_DATW_4		((0 << 1) | (1 << 0)) 
/* 4bit */

#define CMD_SET_DATW_8		((1 << 1) | (0 << 0)) 
/* 8bit */

/* CE_CMD_CTRL */

#define CMD_CTRL_BREAK		(1 << 0)

/* CE_BLOCK_SET */

#define BLOCK_SIZE_MASK		0x0000ffff

/* CE_INT */

#define INT_CCSDE		(1 << 29)

#define INT_CMD12DRE		(1 << 26)

#define INT_CMD12RBE		(1 << 25)

#define INT_CMD12CRE		(1 << 24)

#define INT_DTRANE		(1 << 23)

#define INT_BUFRE		(1 << 22)

#define INT_BUFWEN		(1 << 21)

#define INT_BUFREN		(1 << 20)

#define INT_CCSRCV		(1 << 19)

#define INT_RBSYE		(1 << 17)

#define INT_CRSPE		(1 << 16)

#define INT_CMDVIO		(1 << 15)

#define INT_BUFVIO		(1 << 14)

#define INT_WDATERR		(1 << 11)

#define INT_RDATERR		(1 << 10)

#define INT_RIDXERR		(1 << 9)

#define INT_RSPERR		(1 << 8)

#define INT_CCSTO		(1 << 5)

#define INT_CRCSTO		(1 << 4)

#define INT_WDATTO		(1 << 3)

#define INT_RDATTO		(1 << 2)

#define INT_RBSYTO		(1 << 1)

#define INT_RSPTO		(1 << 0)

#define INT_ERR_STS		(INT_CMDVIO | INT_BUFVIO | INT_WDATERR |  \
                                 INT_RDATERR | INT_RIDXERR | INT_RSPERR | \
                                 INT_CCSTO | INT_CRCSTO | INT_WDATTO |    \
                                 INT_RDATTO | INT_RBSYTO | INT_RSPTO)


#define INT_ALL			(INT_RBSYE | INT_CRSPE | INT_BUFREN |    \
                                 INT_BUFWEN | INT_CMD12DRE | INT_BUFRE | \
                                 INT_DTRANE | INT_CMD12RBE | INT_CMD12CRE)


#define INT_CCS			(INT_CCSTO | INT_CCSRCV | INT_CCSDE)

/* CE_INT_MASK */

#define MASK_ALL		0x00000000

#define MASK_MCCSDE		(1 << 29)

#define MASK_MCMD12DRE		(1 << 26)

#define MASK_MCMD12RBE		(1 << 25)

#define MASK_MCMD12CRE		(1 << 24)

#define MASK_MDTRANE		(1 << 23)

#define MASK_MBUFRE		(1 << 22)

#define MASK_MBUFWEN		(1 << 21)

#define MASK_MBUFREN		(1 << 20)

#define MASK_MCCSRCV		(1 << 19)

#define MASK_MRBSYE		(1 << 17)

#define MASK_MCRSPE		(1 << 16)

#define MASK_MCMDVIO		(1 << 15)

#define MASK_MBUFVIO		(1 << 14)

#define MASK_MWDATERR		(1 << 11)

#define MASK_MRDATERR		(1 << 10)

#define MASK_MRIDXERR		(1 << 9)

#define MASK_MRSPERR		(1 << 8)

#define MASK_MCCSTO		(1 << 5)

#define MASK_MCRCSTO		(1 << 4)

#define MASK_MWDATTO		(1 << 3)

#define MASK_MRDATTO		(1 << 2)

#define MASK_MRBSYTO		(1 << 1)

#define MASK_MRSPTO		(1 << 0)


#define MASK_START_CMD		(MASK_MCMDVIO | MASK_MBUFVIO | MASK_MWDATERR | \
                                 MASK_MRDATERR | MASK_MRIDXERR | MASK_MRSPERR | \
                                 MASK_MCRCSTO | MASK_MWDATTO | \
                                 MASK_MRDATTO | MASK_MRBSYTO | MASK_MRSPTO)


#define MASK_CLEAN		(INT_ERR_STS | MASK_MRBSYE | MASK_MCRSPE |      \
                                 MASK_MBUFREN | MASK_MBUFWEN |                  \
                                 MASK_MCMD12DRE | MASK_MBUFRE | MASK_MDTRANE |  \
                                 MASK_MCMD12RBE | MASK_MCMD12CRE)

/* CE_HOST_STS1 */

#define STS1_CMDSEQ		(1 << 31)

/* CE_HOST_STS2 */

#define STS2_CRCSTE		(1 << 31)

#define STS2_CRC16E		(1 << 30)

#define STS2_AC12CRCE		(1 << 29)

#define STS2_RSPCRC7E		(1 << 28)

#define STS2_CRCSTEBE		(1 << 27)

#define STS2_RDATEBE		(1 << 26)

#define STS2_AC12REBE		(1 << 25)

#define STS2_RSPEBE		(1 << 24)

#define STS2_AC12IDXE		(1 << 23)

#define STS2_RSPIDXE		(1 << 22)

#define STS2_CCSTO		(1 << 15)

#define STS2_RDATTO		(1 << 14)

#define STS2_DATBSYTO		(1 << 13)

#define STS2_CRCSTTO		(1 << 12)

#define STS2_AC12BSYTO		(1 << 11)

#define STS2_RSPBSYTO		(1 << 10)

#define STS2_AC12RSPTO		(1 << 9)

#define STS2_RSPTO		(1 << 8)

#define STS2_CRC_ERR		(STS2_CRCSTE | STS2_CRC16E |            \
                                 STS2_AC12CRCE | STS2_RSPCRC7E | STS2_CRCSTEBE)

#define STS2_TIMEOUT_ERR	(STS2_CCSTO | STS2_RDATTO |             \
                                 STS2_DATBSYTO | STS2_CRCSTTO |         \
                                 STS2_AC12BSYTO | STS2_RSPBSYTO |       \
                                 STS2_AC12RSPTO | STS2_RSPTO)


#define CLKDEV_EMMC_DATA	52000000 
/* 52MHz */

#define CLKDEV_MMC_DATA		20000000 
/* 20MHz */

#define CLKDEV_INIT		400000   
/* 400 KHz */


enum sh_mmcif_state {
	
STATE_IDLE,
	
STATE_REQUEST,
	
STATE_IOS,
	
STATE_TIMEOUT,
};


enum sh_mmcif_wait_for {
	
MMCIF_WAIT_FOR_REQUEST,
	
MMCIF_WAIT_FOR_CMD,
	
MMCIF_WAIT_FOR_MREAD,
	
MMCIF_WAIT_FOR_MWRITE,
	
MMCIF_WAIT_FOR_READ,
	
MMCIF_WAIT_FOR_WRITE,
	
MMCIF_WAIT_FOR_READ_END,
	
MMCIF_WAIT_FOR_WRITE_END,
	
MMCIF_WAIT_FOR_STOP,
};

/*
 * difference for each SoC
 */

struct sh_mmcif_host {
	
struct mmc_host *mmc;
	
struct mmc_request *mrq;
	
struct platform_device *pd;
	
struct clk *clk;
	
int bus_width;
	
unsigned char timing;
	
bool sd_error;
	
bool dying;
	
long timeout;
	
void __iomem *addr;
	
u32 *pio_ptr;
	
spinlock_t lock;		/* protect sh_mmcif_host::state */
	
enum sh_mmcif_state state;
	
enum sh_mmcif_wait_for wait_for;
	
struct delayed_work timeout_work;
	
size_t blocksize;
	
int sg_idx;
	
int sg_blkidx;
	
bool power;
	
bool ccs_enable;		/* Command Completion Signal support */
	
bool clk_ctrl2_enable;
	
struct mutex thread_lock;
	
u32 clkdiv_map;         /* see CE_CLK_CTRL::CLKDIV */

	/* DMA support */
	
struct dma_chan		*chan_rx;
	
struct dma_chan		*chan_tx;
	
struct completion	dma_complete;
	
bool			dma_active;
};


static const struct of_device_id sh_mmcif_of_match[] = {
	{ .compatible = "renesas,sh-mmcif" },
	{ }
};
MODULE_DEVICE_TABLE(of, sh_mmcif_of_match);


#define sh_mmcif_host_to_dev(host) (&host->pd->dev)



static inline void sh_mmcif_bitset(struct sh_mmcif_host *host,
					unsigned int reg, u32 val)
{
	writel(val | readl(host->addr + reg), host->addr + reg);
}

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static inline void sh_mmcif_bitclr(struct sh_mmcif_host *host,
					unsigned int reg, u32 val)
{
	writel(~val & readl(host->addr + reg), host->addr + reg);
}

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static void sh_mmcif_dma_complete(void *arg)
{
	struct sh_mmcif_host *host = arg;
	struct mmc_request *mrq = host->mrq;
	struct device *dev = sh_mmcif_host_to_dev(host);

	dev_dbg(dev, "Command completed\n");

	if (WARN(!mrq || !mrq->data, "%s: NULL data in DMA completion!\n",
		 dev_name(dev)))
		return;

	complete(&host->dma_complete);
}

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static void sh_mmcif_start_dma_rx(struct sh_mmcif_host *host)
{
	struct mmc_data *data = host->mrq->data;
	struct scatterlist *sg = data->sg;
	struct dma_async_tx_descriptor *desc = NULL;
	struct dma_chan *chan = host->chan_rx;
	struct device *dev = sh_mmcif_host_to_dev(host);
	dma_cookie_t cookie = -EINVAL;
	int ret;

	ret = dma_map_sg(chan->device->dev, sg, data->sg_len,
			 DMA_FROM_DEVICE);
	if (ret > 0) {
		host->dma_active = true;
		desc = dmaengine_prep_slave_sg(chan, sg, ret,
			DMA_DEV_TO_MEM, DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
	}

	if (desc) {
		desc->callback = sh_mmcif_dma_complete;
		desc->callback_param = host;
		cookie = dmaengine_submit(desc);
		sh_mmcif_bitset(host, MMCIF_CE_BUF_ACC, BUF_ACC_DMAREN);
		dma_async_issue_pending(chan);
	}
	dev_dbg(dev, "%s(): mapped %d -> %d, cookie %d\n",
		__func__, data->sg_len, ret, cookie);

	if (!desc) {
		/* DMA failed, fall back to PIO */
		if (ret >= 0)
			ret = -EIO;
		host->chan_rx = NULL;
		host->dma_active = false;
		dma_release_channel(chan);
		/* Free the Tx channel too */
		chan = host->chan_tx;
		if (chan) {
			host->chan_tx = NULL;
			dma_release_channel(chan);
		}
		dev_warn(dev,
			 "DMA failed: %d, falling back to PIO\n", ret);
		sh_mmcif_bitclr(host, MMCIF_CE_BUF_ACC, BUF_ACC_DMAREN | BUF_ACC_DMAWEN);
	}

	dev_dbg(dev, "%s(): desc %p, cookie %d, sg[%d]\n", __func__,
		desc, cookie, data->sg_len);
}

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static void sh_mmcif_start_dma_tx(struct sh_mmcif_host *host)
{
	struct mmc_data *data = host->mrq->data;
	struct scatterlist *sg = data->sg;
	struct dma_async_tx_descriptor *desc = NULL;
	struct dma_chan *chan = host->chan_tx;
	struct device *dev = sh_mmcif_host_to_dev(host);
	dma_cookie_t cookie = -EINVAL;
	int ret;

	ret = dma_map_sg(chan->device->dev, sg, data->sg_len,
			 DMA_TO_DEVICE);
	if (ret > 0) {
		host->dma_active = true;
		desc = dmaengine_prep_slave_sg(chan, sg, ret,
			DMA_MEM_TO_DEV, DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
	}

	if (desc) {
		desc->callback = sh_mmcif_dma_complete;
		desc->callback_param = host;
		cookie = dmaengine_submit(desc);
		sh_mmcif_bitset(host, MMCIF_CE_BUF_ACC, BUF_ACC_DMAWEN);
		dma_async_issue_pending(chan);
	}
	dev_dbg(dev, "%s(): mapped %d -> %d, cookie %d\n",
		__func__, data->sg_len, ret, cookie);

	if (!desc) {
		/* DMA failed, fall back to PIO */
		if (ret >= 0)
			ret = -EIO;
		host->chan_tx = NULL;
		host->dma_active = false;
		dma_release_channel(chan);
		/* Free the Rx channel too */
		chan = host->chan_rx;
		if (chan) {
			host->chan_rx = NULL;
			dma_release_channel(chan);
		}
		dev_warn(dev,
			 "DMA failed: %d, falling back to PIO\n", ret);
		sh_mmcif_bitclr(host, MMCIF_CE_BUF_ACC, BUF_ACC_DMAREN | BUF_ACC_DMAWEN);
	}

	dev_dbg(dev, "%s(): desc %p, cookie %d\n", __func__,
		desc, cookie);
}

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3
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vinod koul
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0.38%
1
11.11%
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alexandre bounine
1
0.38%
1
11.11%
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static struct dma_chan *

sh_mmcif_request_dma_pdata(struct sh_mmcif_host *host, uintptr_t slave_id)
{
	dma_cap_mask_t mask;

	dma_cap_zero(mask);
	dma_cap_set(DMA_SLAVE, mask);
	if (slave_id <= 0)
		return NULL;

	return dma_request_channel(mask, shdma_chan_filter, (void *)slave_id);
}

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static int sh_mmcif_dma_slave_config(struct sh_mmcif_host *host,
				     struct dma_chan *chan,
				     enum dma_transfer_direction direction)
{
	struct resource *res;
	struct dma_slave_config cfg = { 0, };

	res = platform_get_resource(host->pd, IORESOURCE_MEM, 0);
	cfg.direction = direction;

	if (direction == DMA_DEV_TO_MEM) {
		cfg.src_addr = res->start + MMCIF_CE_DATA;
		cfg.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
	} else {
		cfg.dst_addr = res->start + MMCIF_CE_DATA;
		cfg.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
	}

	return dmaengine_slave_config(chan, &cfg);
}

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static void sh_mmcif_request_dma(struct sh_mmcif_host *host)
{
	struct device *dev = sh_mmcif_host_to_dev(host);
	host->dma_active = false;

	/* We can only either use DMA for both Tx and Rx or not use it at all */
	if (IS_ENABLED(CONFIG_SUPERH) && dev->platform_data) {
		struct sh_mmcif_plat_data *pdata = dev->platform_data;

		host->chan_tx = sh_mmcif_request_dma_pdata(host,
							pdata->slave_id_tx);
		host->chan_rx = sh_mmcif_request_dma_pdata(host,
							pdata->slave_id_rx);
	} else {
		host->chan_tx = dma_request_slave_channel(dev, "tx");
		host->chan_rx = dma_request_slave_channel(dev, "rx");
	}
	dev_dbg(dev, "%s: got channel TX %p RX %p\n", __func__, host->chan_tx,
		host->chan_rx);

	if (!host->chan_tx || !host->chan_rx ||
	    sh_mmcif_dma_slave_config(host, host->chan_tx, DMA_MEM_TO_DEV) ||
	    sh_mmcif_dma_slave_config(host, host->chan_rx, DMA_DEV_TO_MEM))
		goto error;

	return;

error:
	if (host->chan_tx)
		dma_release_channel(host->chan_tx);
	if (host->chan_rx)
		dma_release_channel(host->chan_rx);
	host->chan_tx = host->chan_rx = NULL;
}

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laurent pinchart
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16.49%
1
14.29%
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kuninori morimoto
10
5.15%
1
14.29%
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chris paterson
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0.52%
1
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static void sh_mmcif_release_dma(struct sh_mmcif_host *host)
{
	sh_mmcif_bitclr(host, MMCIF_CE_BUF_ACC, BUF_ACC_DMAREN | BUF_ACC_DMAWEN);
	/* Descriptors are freed automatically */
	if (host->chan_tx) {
		struct dma_chan *chan = host->chan_tx;
		host->chan_tx = NULL;
		dma_release_channel(chan);
	}
	if (host->chan_rx) {
		struct dma_chan *chan = host->chan_rx;
		host->chan_rx = NULL;
		dma_release_channel(chan);
	}

	host->dma_active = false;
}

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static void sh_mmcif_clock_control(struct sh_mmcif_host *host, unsigned int clk)
{
	struct device *dev = sh_mmcif_host_to_dev(host);
	struct sh_mmcif_plat_data *p = dev->platform_data;
	bool sup_pclk = p ? p->sup_pclk : false;
	unsigned int current_clk = clk_get_rate(host->clk);
	unsigned int clkdiv;

	sh_mmcif_bitclr(host, MMCIF_CE_CLK_CTRL, CLK_ENABLE);
	sh_mmcif_bitclr(host, MMCIF_CE_CLK_CTRL, CLK_CLEAR);

	if (!clk)
		return;

	if (host->clkdiv_map) {
		unsigned int freq, best_freq, myclk, div, diff_min, diff;
		int i;

		clkdiv = 0;
		diff_min = ~0;
		best_freq = 0;
		for (i = 31; i >= 0; i--) {
			if (!((1 << i) & host->clkdiv_map))
				continue;

			/*
                         * clk = parent_freq / div
                         * -> parent_freq = clk x div
                         */

			div = 1 << (i + 1);
			freq = clk_round_rate(host->clk, clk * div);
			myclk = freq / div;
			diff = (myclk > clk) ? myclk - clk : clk - myclk;

			if (diff <= diff_min) {
				best_freq = freq;
				clkdiv = i;
				diff_min = diff;
			}
		}

		dev_dbg(dev, "clk %u/%u (%u, 0x%x)\n",
			(best_freq / (1 << (clkdiv + 1))), clk,
			best_freq, clkdiv);

		clk_set_rate(host->clk, best_freq);
		clkdiv = clkdiv << 16;
	} else if (sup_pclk && clk == current_clk) {
		clkdiv = CLK_SUP_PCLK;
	} else {
		clkdiv = (fls(DIV_ROUND_UP(current_clk, clk) - 1) - 1) << 16;
	}

	sh_mmcif_bitset(host, MMCIF_CE_CLK_CTRL, CLK_CLEAR & clkdiv);
	sh_mmcif_bitset(host, MMCIF_CE_CLK_CTRL, CLK_ENABLE);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
kuninori morimoto
kuninori morimoto
222
69.59%
3
42.86%
yusuke goda
yusuke goda
75
23.51%
1
14.29%
guennadi liakhovetski
guennadi liakhovetski
16
5.02%
2
28.57%
simon horman
simon horman
6
1.88%
1
14.29%
Total
319
100.00%
7
100.00%



static void sh_mmcif_sync_reset(struct sh_mmcif_host *host)
{
	u32 tmp;

	tmp = 0x010f0000 & sh_mmcif_readl(host->addr, MMCIF_CE_CLK_CTRL);

	sh_mmcif_writel(host->addr, MMCIF_CE_VERSION, SOFT_RST_ON);
	sh_mmcif_writel(host->addr, MMCIF_CE_VERSION, SOFT_RST_OFF);
	if (host->ccs_enable)
		tmp |= SCCSTO_29;
	if (host->clk_ctrl2_enable)
		sh_mmcif_writel(host->addr, MMCIF_CE_CLK_CTRL2, 0x0F0F0000);
	sh_mmcif_bitset(host, MMCIF_CE_CLK_CTRL, tmp |
		SRSPTO_256 | SRBSYTO_29 | SRWDTO_29);
	/* byte swap on */
	sh_mmcif_bitset(host, MMCIF_CE_BUF_ACC, BUF_ACC_ATYP);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
yusuke goda
yusuke goda
68
67.33%
1
25.00%
guennadi liakhovetski
guennadi liakhovetski
27
26.73%
2
50.00%
magnus damm
magnus damm
6
5.94%
1
25.00%
Total
101
100.00%
4
100.00%



static int sh_mmcif_error_manage(struct sh_mmcif_host *host)
{
	struct device *dev = sh_mmcif_host_to_dev(host);
	u32 state1, state2;
	int ret, timeout;

	host->sd_error = false;

	state1 = sh_mmcif_readl(host->addr, MMCIF_CE_HOST_STS1);
	state2 = sh_mmcif_readl(host->addr, MMCIF_CE_HOST_STS2);
	dev_dbg(dev, "ERR HOST_STS1 = %08x\n", state1);
	dev_dbg(dev, "ERR HOST_STS2 = %08x\n", state2);

	if (state1 & STS1_CMDSEQ) {
		sh_mmcif_bitset(host, MMCIF_CE_CMD_CTRL, CMD_CTRL_BREAK);
		sh_mmcif_bitset(host, MMCIF_CE_CMD_CTRL, ~CMD_CTRL_BREAK);
		for (timeout = 10000000; timeout; timeout--) {
			if (!(sh_mmcif_readl(host->addr, MMCIF_CE_HOST_STS1)
			      & STS1_CMDSEQ))
				break;
			mdelay(1);
		}
		if (!timeout) {
			dev_err(dev,
				"Forced end of command sequence timeout err\n");
			return -EIO;
		}
		sh_mmcif_sync_reset(host);
		dev_dbg(dev, "Forced end of command sequence\n");
		return -EIO;
	}

	if (state2 & STS2_CRC_ERR) {
		dev_err(dev, " CRC error: state %u, wait %u\n",
			host->state, host->wait_for);
		ret = -EIO;
	} else if (state2 & STS2_TIMEOUT_ERR) {
		dev_err(dev, " Timeout: state %u, wait %u\n",
			host->state, host->wait_for);
		ret = -ETIMEDOUT;
	} else {
		dev_dbg(dev, " End/Index error: state %u, wait %u\n",
			host->state, host->wait_for);
		ret = -EIO;
	}
	return ret;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
yusuke goda
yusuke goda
164
64.06%
1
14.29%
guennadi liakhovetski
guennadi liakhovetski
45
17.58%
3
42.86%
teppei kamijou
teppei kamijou
29
11.33%
1
14.29%
kuninori morimoto
kuninori morimoto
10
3.91%
1
14.29%
magnus damm
magnus damm
8
3.12%
1
14.29%
Total
256
100.00%
7
100.00%



static bool sh_mmcif_next_block(struct sh_mmcif_host *host, u32 *p)
{
	struct mmc_data *data = host->mrq->data;

	host->sg_blkidx += host->blocksize;

	/* data->sg->length must be a multiple of host->blocksize? */
	BUG_ON(host->sg_blkidx > data->sg->length);

	if (host->sg_blkidx == data->sg->length) {
		host->sg_blkidx = 0;
		if (++host->sg_idx < data->sg_len)
			host->pio_ptr = sg_virt(++data->sg);
	} else {
		host->pio_ptr = p;
	}

	return host->sg_idx != data->sg_len;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
guennadi liakhovetski
guennadi liakhovetski
73
66.97%
2
66.67%
yusuke goda
yusuke goda
36
33.03%
1
33.33%
Total
109
100.00%
3
100.00%



static void sh_mmcif_single_read(struct sh_mmcif_host *host,
				 struct mmc_request *mrq)
{
	host->blocksize = (sh_mmcif_readl(host->addr, MMCIF_CE_BLOCK_SET) &
			   BLOCK_SIZE_MASK) + 3;

	host->wait_for = MMCIF_WAIT_FOR_READ;

	/* buf read enable */
	sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MBUFREN);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
guennadi liakhovetski
guennadi liakhovetski
29
56.86%
1
33.33%
yusuke goda
yusuke goda
19
37.25%
1
33.33%
magnus damm
magnus damm
3
5.88%
1
33.33%
Total
51
100.00%
3
100.00%



static bool sh_mmcif_read_block(struct sh_mmcif_host *host)
{
	struct device *dev = sh_mmcif_host_to_dev(host);
	struct mmc_data *data = host->mrq->data;
	u32 *p = sg_virt(data->sg);
	int i;

	if (host->sd_error) {
		data->error = sh_mmcif_error_manage(host);
		dev_dbg(dev, "%s(): %d\n", __func__, data->error);
		return false;
	}

	for (i = 0; i < host->blocksize / 4; i++)
		*p++ = sh_mmcif_readl(host->addr, MMCIF_CE_DATA);

	/* buffer read end */
	sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MBUFRE);
	host->wait_for = MMCIF_WAIT_FOR_READ_END;

	return true;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
yusuke goda
yusuke goda
67
52.34%
1
20.00%
guennadi liakhovetski
guennadi liakhovetski
36
28.12%
1
20.00%
teppei kamijou
teppei kamijou
13
10.16%
1
20.00%
kuninori morimoto
kuninori morimoto
10
7.81%
1
20.00%
magnus damm
magnus damm
2
1.56%
1
20.00%
Total
128
100.00%
5
100.00%



static void sh_mmcif_multi_read(struct sh_mmcif_host *host,
				struct mmc_request *mrq)
{
	struct mmc_data *data = mrq->data;

	if (!data->sg_len || !data->sg->length)
		return;

	host->blocksize = sh_mmcif_readl(host->addr, MMCIF_CE_BLOCK_SET) &
		BLOCK_SIZE_MASK;

	host->wait_for = MMCIF_WAIT_FOR_MREAD;
	host->sg_idx = 0;
	host->sg_blkidx = 0;
	host->pio_ptr = sg_virt(data->sg);

	sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MBUFREN);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
yusuke goda
yusuke goda
48
51.61%
1
33.33%
guennadi liakhovetski
guennadi liakhovetski
42
45.16%
1
33.33%
magnus damm
magnus damm
3
3.23%
1
33.33%
Total
93
100.00%
3
100.00%



static bool sh_mmcif_mread_block(struct sh_mmcif_host *host)
{
	struct device *dev = sh_mmcif_host_to_dev(host);
	struct mmc_data *data = host->mrq->data;
	u32 *p = host->pio_ptr;
	int i;

	if (host->sd_error) {
		data->error = sh_mmcif_error_manage(host);
		dev_dbg(dev, "%s(): %d\n", __func__, data->error);
		return false;
	}

	BUG_ON(!data->sg->length);

	for (i = 0; i < host->blocksize / 4; i++)
		*p++ = sh_mmcif_readl(host->addr, MMCIF_CE_DATA);

	if (!sh_mmcif_next_block(host, p))
		return false;

	sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MBUFREN);

	return true;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
guennadi liakhovetski
guennadi liakhovetski
67
47.52%
1
20.00%
yusuke goda
yusuke goda
50
35.46%
1
20.00%
teppei kamijou
teppei kamijou
13
9.22%
1
20.00%
kuninori morimoto
kuninori morimoto
10
7.09%
1
20.00%
magnus damm
magnus damm
1
0.71%
1
20.00%
Total
141
100.00%
5
100.00%



static void sh_mmcif_single_write(struct sh_mmcif_host *host,
					struct mmc_request *mrq)
{
	host->blocksize = (sh_mmcif_readl(host->addr, MMCIF_CE_BLOCK_SET) &
			   BLOCK_SIZE_MASK) + 3;

	host->wait_for = MMCIF_WAIT_FOR_WRITE;

	/* buf write enable */
	sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MBUFWEN);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
guennadi liakhovetski
guennadi liakhovetski
50
98.04%
1
50.00%
yusuke goda
yusuke goda
1
1.96%
1
50.00%
Total
51
100.00%
2
100.00%



static bool sh_mmcif_write_block(struct sh_mmcif_host *host)
{
	struct device *dev = sh_mmcif_host_to_dev(host);
	struct mmc_data *data = host->mrq->data;
	u32 *p = sg_virt(data->sg);
	int i;

	if (host->sd_error) {
		data->error = sh_mmcif_error_manage(host);
		dev_dbg(dev, "%s(): %d\n", __func__, data->error);
		return false;
	}

	for (i = 0; i < host->blocksize / 4; i++)
		sh_mmcif_writel(host->addr, MMCIF_CE_DATA, *p++);

	/* buffer write end */
	sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MDTRANE);
	host->wait_for = MMCIF_WAIT_FOR_WRITE_END;

	return true;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
guennadi liakhovetski
guennadi liakhovetski
61
47.66%
1
20.00%
yusuke goda
yusuke goda
42
32.81%
1
20.00%
teppei kamijou
teppei kamijou
13
10.16%
1
20.00%
kuninori morimoto
kuninori morimoto
10
7.81%
1
20.00%
magnus damm
magnus damm
2
1.56%
1
20.00%
Total
128
100.00%
5
100.00%



static void sh_mmcif_multi_write(struct sh_mmcif_host *host,
				struct mmc_request *mrq)
{
	struct mmc_data *data = mrq->data;

	if (!data->sg_len || !data->sg->length)
		return;

	host->blocksize = sh_mmcif_readl(host->addr, MMCIF_CE_BLOCK_SET) &
		BLOCK_SIZE_MASK;

	host->wait_for = MMCIF_WAIT_FOR_MWRITE;
	host->sg_idx = 0;
	host->sg_blkidx = 0;
	host->pio_ptr = sg_virt(data->sg);

	sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MBUFWEN);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
guennadi liakhovetski
guennadi liakhovetski
83
89.25%
1
50.00%
yusuke goda
yusuke goda
10
10.75%
1
50.00%
Total
93
100.00%
2
100.00%



static bool sh_mmcif_mwrite_block(struct sh_mmcif_host *host)
{
	struct device *dev = sh_mmcif_host_to_dev(host);
	struct mmc_data *data = host->mrq->data;
	u32 *p = host->pio_ptr;
	int i;

	if (host->sd_error) {
		data->error = sh_mmcif_error_manage(host);
		dev_dbg(dev, "%s(): %d\n", __func__, data->error);
		return false;
	}

	BUG_ON(!data->sg->length);

	for (i = 0; i < host->blocksize / 4; i++)
		sh_mmcif_writel(host->addr, MMCIF_CE_DATA, *p++);

	if (!sh_mmcif_next_block(host, p))
		return false;

	sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MBUFWEN);

	return true;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
guennadi liakhovetski
guennadi liakhovetski
118
83.69%
1
33.33%
teppei kamijou
teppei kamijou
13
9.22%
1
33.33%
kuninori morimoto
kuninori morimoto
10
7.09%
1
33.33%
Total
141
100.00%
3
100.00%



static void sh_mmcif_get_response(struct sh_mmcif_host *host,
						struct mmc_command *cmd)
{
	if (cmd->flags & MMC_RSP_136) {
		cmd->resp[0] = sh_mmcif_readl(host->addr, MMCIF_CE_RESP3);
		cmd->resp[1] = sh_mmcif_readl(host->addr, MMCIF_CE_RESP2);
		cmd->resp[2] = sh_mmcif_readl(host->addr, MMCIF_CE_RESP1);
		cmd->resp[3] = sh_mmcif_readl(host->addr, MMCIF_CE_RESP0);
	} else
		cmd->resp[0] = sh_mmcif_readl(host->addr, MMCIF_CE_RESP0);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
yusuke goda
yusuke goda
84
78.50%
1
33.33%
guennadi liakhovetski
guennadi liakhovetski
13
12.15%
1
33.33%
magnus damm
magnus damm
10
9.35%
1
33.33%
Total
107
100.00%
3
100.00%



static void sh_mmcif_get_cmd12response(struct sh_mmcif_host *host,
						struct mmc_command *cmd)
{
	cmd->resp[0] = sh_mmcif_readl(host->addr, MMCIF_CE_RESP_CMD12);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
yusuke goda
yusuke goda
30
93.75%
1
50.00%
magnus damm
magnus damm
2
6.25%
1
50.00%
Total
32
100.00%
2
100.00%



static u32 sh_mmcif_set_cmd(struct sh_mmcif_host *host,
			    struct mmc_request *mrq)
{
	struct device *dev = sh_mmcif_host_to_dev(host);
	struct mmc_data *data = mrq->data;
	struct mmc_command *cmd = mrq->cmd;
	u32 opc = cmd->opcode;
	u32 tmp = 0;

	/* Response Type check */
	switch (mmc_resp_type(cmd)) {
	case MMC_RSP_NONE:
		tmp |= CMD_SET_RTYP_NO;
		break;
	case MMC_RSP_R1:
	case MMC_RSP_R1B:
	case MMC_RSP_R3:
		tmp |= CMD_SET_RTYP_6B;
		break;
	case MMC_RSP_R2:
		tmp |= CMD_SET_RTYP_17B;
		break;
	default:
		dev_err(dev, "Unsupported response type.\n");
		break;
	}
	switch (opc) {
	/* RBSY */
	case MMC_SLEEP_AWAKE:
	case MMC_SWITCH:
	case MMC_STOP_TRANSMISSION:
	case MMC_SET_WRITE_PROT:
	case MMC_CLR_WRITE_PROT:
	case MMC_ERASE:
		tmp |= CMD_SET_RBSY;
		break;
	}
	/* WDAT / DATW */
	if (data) {
		tmp |= CMD_SET_WDAT;
		switch (host->bus_width) {
		case MMC_BUS_WIDTH_1:
			tmp |= CMD_SET_DATW_1;
			break;
		case MMC_BUS_WIDTH_4:
			tmp |= CMD_SET_DATW_4;
			break;
		case MMC_BUS_WIDTH_8:
			tmp |= CMD_SET_DATW_8;
			break;
		default:
			dev_err(dev, "Unsupported bus width.\n");
			break;
		}
		switch (host->timing) {
		case MMC_TIMING_MMC_DDR52:
			/*
                         * MMC core will only set this timing, if the host
                         * advertises the MMC_CAP_1_8V_DDR/MMC_CAP_1_2V_DDR
                         * capability. MMCIF implementations with this
                         * capability, e.g. sh73a0, will have to set it
                         * in their platform data.
                         */
			tmp |= CMD_SET_DARS;
			break;
		}
	}
	/* DWEN */
	if (opc == MMC_WRITE_BLOCK || opc == MMC_WRITE_MULTIPLE_BLOCK)
		tmp |= CMD_SET_DWEN;
	/* CMLTE/CMD12EN */
	if (opc == MMC_READ_MULTIPLE_BLOCK || opc == MMC_WRITE_MULTIPLE_BLOCK) {
		tmp |= CMD_SET_CMLTE | CMD_SET_CMD12EN;
		sh_mmcif_bitset(host, MMCIF_CE_BLOCK_SET,
				data->blocks << 16);
	}
	/* RIDXC[1:0] check bits */
	if (opc == MMC_SEND_OP_COND || opc == MMC_ALL_SEND_CID ||
	    opc == MMC_SEND_CSD || opc == MMC_SEND_CID)
		tmp |= CMD_SET_RIDXC_BITS;
	/* RCRC7C[1:0] check bits */
	if (opc == MMC_SEND_OP_COND)
		tmp |= CMD_SET_CRC7C_BITS;
	/* RCRC7C[1:0] internal CRC7 */
	if (opc == MMC_ALL_SEND_CID ||
		opc == MMC_SEND_CSD || opc == MMC_SEND_CID)
		tmp |= CMD_SET_CRC7C_INTERNAL;

	return (opc << 24) | tmp;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
yusuke goda
yusuke goda
254
81.15%
1
14.29%
guennadi liakhovetski
guennadi liakhovetski
29
9.27%
2
28.57%
teppei kamijou
teppei kamijou
18
5.75%
2
28.57%
kuninori morimoto
kuninori morimoto
10
3.19%
1
14.29%
seungwon jeon
seungwon jeon
2
0.64%
1
14.29%
Total
313
100.00%
7
100.00%



static int sh_mmcif_data_trans(struct sh_mmcif_host *host,
			       struct mmc_request *mrq, u32 opc)
{
	struct device *dev = sh_mmcif_host_to_dev(host);

	switch (opc) {
	case MMC_READ_MULTIPLE_BLOCK:
		sh_mmcif_multi_read(host, mrq);
		return 0;
	case MMC_WRITE_MULTIPLE_BLOCK:
		sh_mmcif_multi_write(host, mrq);
		return 0;
	case MMC_WRITE_BLOCK:
		sh_mmcif_single_write(host, mrq);
		return 0;
	case MMC_READ_SINGLE_BLOCK:
	case MMC_SEND_EXT_CSD:
		sh_mmcif_single_read(host, mrq);
		return 0;
	default:
		dev_err(dev, "Unsupported CMD%d\n", opc);
		return -EINVAL;
	}
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
yusuke goda
yusuke goda
71
68.27%
1
16.67%
guennadi liakhovetski
guennadi liakhovetski
22
21.15%
3
50.00%
kuninori morimoto
kuninori morimoto
10
9.62%
1
16.67%
teppei kamijou
teppei kamijou
1
0.96%
1
16.67%
Total
104
100.00%
6
100.00%



static void sh_mmcif_start_cmd(struct sh_mmcif_host *host,
			       struct mmc_request *mrq)
{
	struct mmc_command *cmd = mrq->cmd;
	u32 opc = cmd->opcode;
	u32 mask;
	unsigned long flags;

	switch (opc) {
	/* response busy check */
	case MMC_SLEEP_AWAKE:
	case MMC_SWITCH:
	case MMC_STOP_TRANSMISSION:
	case MMC_SET_WRITE_PROT:
	case MMC_CLR_WRITE_PROT:
	case MMC_ERASE:
		mask = MASK_START_CMD | MASK_MRBSYE;
		break;
	default:
		mask = MASK_START_CMD | MASK_MCRSPE;
		break;
	}

	if (host->ccs_enable)
		mask |= MASK_MCCSTO;

	if (mrq->data) {
		sh_mmcif_writel(host->addr, MMCIF_CE_BLOCK_SET, 0);
		sh_mmcif_writel(host->addr, MMCIF_CE_BLOCK_SET,
				mrq->data->blksz);
	}
	opc = sh_mmcif_set_cmd(host, mrq);

	if (host->ccs_enable)
		sh_mmcif_writel(host->addr, MMCIF_CE_INT, 0xD80430C0);
	else
		sh_mmcif_writel(host->addr, MMCIF_CE_INT, 0xD80430C0 | INT_CCS);
	sh_mmcif_writel(host->addr, MMCIF_CE_INT_MASK, mask);
	/* set arg */
	sh_mmcif_writel(host->addr, MMCIF_CE_ARG, cmd->arg);
	/* set cmd */
	spin_lock_irqsave(&host->lock, flags);
	sh_mmcif_writel(host->addr, MMCIF_CE_CMD_SET, opc);

	host->wait_for = MMCIF_WAIT_FOR_CMD;
	schedule_delayed_work(&host->timeout_work, host->timeout);
	spin_unlock_irqrestore(&host->lock, flags);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
yusuke goda
yusuke goda
136
57.14%
1
11.11%
guennadi liakhovetski
guennadi liakhovetski
63
26.47%
5
55.56%
kouichi tomita
kouichi tomita
24
10.08%
1
11.11%
magnus damm
magnus damm
12
5.04%
1
11.11%
teppei kamijou
teppei kamijou
3
1.26%
1
11.11%
Total
238
100.00%
9
100.00%



static void sh_mmcif_stop_cmd(struct sh_mmcif_host *host,
			      struct mmc_request *mrq)
{
	struct device *dev = sh_mmcif_host_to_dev(host);

	switch (mrq->cmd->opcode) {
	case MMC_READ_MULTIPLE_BLOCK:
		sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MCMD12DRE);
		break;
	case MMC_WRITE_MULTIPLE_BLOCK:
		sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MCMD12RBE);
		break;
	default:
		dev_err(dev, "unsupported stop cmd\n");
		mrq->stop->error = sh_mmcif_error_manage(host);
		return;
	}

	host->wait_for = MMCIF_WAIT_FOR_STOP;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
yusuke goda
yusuke goda
54
61.36%
1
16.67%
guennadi liakhovetski
guennadi liakhovetski
24
27.27%
4
66.67%
kuninori morimoto
kuninori morimoto
10
11.36%
1
16.67%
Total
88
100.00%
6
100.00%



static void sh_mmcif_request(struct mmc_host *mmc, struct mmc_request *mrq)
{
	struct sh_mmcif_host *host = mmc_priv(mmc);
	struct device *dev = sh_mmcif_host_to_dev(host);
	unsigned long flags;

	spin_lock_irqsave(&host->lock, flags);
	if (host->state != STATE_IDLE) {
		dev_dbg(dev, "%s() rejected, state %u\n",
			__func__, host->state);
		spin_unlock_irqrestore(&host->lock, flags);
		mrq->cmd->error = -EAGAIN;
		mmc_request_done(mmc, mrq);
		return;
	}

	host->state = STATE_REQUEST;
	spin_unlock_irqrestore(&host->lock, flags);

	switch (mrq->cmd->opcode) {
	/* MMCIF does not support SD/SDIO command */
	case MMC_SLEEP_AWAKE: /* = SD_IO_SEND_OP_COND (5) */
	case MMC_SEND_EXT_CSD: /* = SD_SEND_IF_COND (8) */
		if ((mrq->cmd->flags & MMC_CMD_MASK) != MMC_CMD_BCR)
			break;
	case MMC_APP_CMD:
	case SD_IO_RW_DIRECT:
		host->state = STATE_IDLE;
		mrq->cmd->error = -ETIMEDOUT;
		mmc_request_done(mmc, mrq);
		return;
	default:
		break;
	}

	host->mrq = mrq;

	sh_mmcif_start_cmd(host, mrq);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
yusuke goda
yusuke goda
79
40.72%
1
14.29%
guennadi liakhovetski
guennadi liakhovetski
74
38.14%
2
28.57%
teppei kamijou
teppei kamijou
16
8.25%
2
28.57%
laurent pinchart
laurent pinchart
15
7.73%
1
14.29%
kuninori morimoto
kuninori morimoto
10
5.15%
1
14.29%
Total
194
100.00%
7
100.00%



static void sh_mmcif_clk_setup(struct sh_mmcif_host *host)
{
	struct device *dev = sh_mmcif_host_to_dev(host);

	if (host->mmc->f_max) {
		unsigned int f_max, f_min = 0, f_min_old;

		f_max = host->mmc->f_max;
		for (f_min_old = f_max; f_min_old > 2;) {
			f_min = clk_round_rate(host->clk, f_min_old / 2);
			if (f_min == f_min_old)
				break;
			f_min_old = f_min;
		}

		/*
                 * This driver assumes this SoC is R-Car Gen2 or later
                 */
		host->clkdiv_map = 0x3ff;

		host->mmc->f_max = f_max / (1 << ffs(host->clkdiv_map));
		host->mmc->f_min = f_min / (1 << fls(host->clkdiv_map));
	} else {
		unsigned int clk = clk_get_rate(host->clk);

		host->mmc->f_max = clk / 2;
		host->mmc->f_min = clk / 512;
	}

	dev_dbg(dev, "clk max/min = %d/%d\n",
		host->mmc->f_max, host->mmc->f_min);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
kuninori morimoto
kuninori morimoto
149
80.98%
3
75.00%
guennadi liakhovetski
guennadi liakhovetski
35
19.02%
1
25.00%
Total
184
100.00%
4
100.00%



static void sh_mmcif_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
{
	struct sh_mmcif_host *host = mmc_priv(mmc);
	struct device *dev = sh_mmcif_host_to_dev(host);
	unsigned long flags;

	spin_lock_irqsave(&host->lock, flags);
	if (host->state != STATE_IDLE) {
		dev_dbg(dev, "%s() rejected, state %u\n",
			__func__, host->state);
		spin_unlock_irqrestore(&host->lock, flags);
		return;
	}

	host->state = STATE_IOS;
	spin_unlock_irqrestore(&host->lock, flags);

	switch (ios->power_mode) {
	case MMC_POWER_UP:
		if (!IS_ERR(mmc->supply.vmmc))
			mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, ios->vdd);
		if (!host->power) {
			clk_prepare_enable(host->clk);
			pm_runtime_get_sync(dev);
			sh_mmcif_sync_reset(host);
			sh_mmcif_request_dma(host);
			host->power = true;
		}
		break;
	case MMC_POWER_OFF:
		if (!IS_ERR(mmc->supply.vmmc))
			mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, 0);
		if (host->power) {
			sh_mmcif_clock_control(host, 0);
			sh_mmcif_release_dma(host);
			pm_runtime_put(dev);
			clk_disable_unprepare(host->clk);
			host->power = false;
		}
		break;
	case MMC_POWER_ON:
		sh_mmcif_clock_control(host, ios->clock);
		break;
	}

	host->timing = ios->timing;
	host->bus_width = ios->bus_width;
	host->state = STATE_IDLE;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
guennadi liakhovetski
guennadi liakhovetski
107
38.49%
8
57.14%
ulf hansson
ulf hansson
84
30.22%
2
14.29%
yusuke goda
yusuke goda
56
20.14%
1
7.14%
teppei kamijou
teppei kamijou
21
7.55%
2
14.29%
kuninori morimoto
kuninori morimoto
10
3.60%
1
7.14%
Total
278
100.00%
14
100.00%



static int sh_mmcif_get_cd(struct mmc_host *mmc)
{
	struct sh_mmcif_host *host = mmc_priv(mmc);
	struct device *dev = sh_mmcif_host_to_dev(host);
	struct sh_mmcif_plat_data *p = dev->platform_data;
	int ret = mmc_gpio_get_cd(mmc);

	if (ret >= 0)
		return ret;

	if (!p || !p->get_cd)
		return -ENOSYS;
	else
		return p->get_cd(host->pd);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
guennadi liakhovetski
guennadi liakhovetski
40
48.78%
3
60.00%
arnd hannemann
arnd hannemann
31
37.80%
1
20.00%
kuninori morimoto
kuninori morimoto
11
13.41%
1
20.00%
Total
82
100.00%
5
100.00%


static struct mmc_host_ops sh_mmcif_ops = {
	.request	= sh_mmcif_request,
	.set_ios	= sh_mmcif_set_ios,
	.get_cd		= sh_mmcif_get_cd,
};



static bool sh_mmcif_end_cmd(struct sh_mmcif_host *host)
{
	struct mmc_command *cmd = host->mrq->cmd;
	struct mmc_data *data = host->mrq->data;
	struct device *dev = sh_mmcif_host_to_dev(host);
	long time;

	if (host->sd_error) {
		switch (cmd->opcode) {
		case MMC_ALL_SEND_CID:
		case MMC_SELECT_CARD:
		case MMC_APP_CMD:
			cmd->error = -ETIMEDOUT;
			break;
		default:
			cmd->error = sh_mmcif_error_manage(host);
			break;
		}
		dev_dbg(dev, "CMD%d error %d\n",
			cmd->opcode, cmd->error);
		host->sd_error = false;
		return false;
	}
	if (!(cmd->flags & MMC_RSP_PRESENT)) {
		cmd->error = 0;
		return false;
	}

	sh_mmcif_get_response(host, cmd);

	if (!data)
		return false;

	/*
         * Completion can be signalled from DMA callback and error, so, have to
         * reset here, before setting .dma_active
         */
	init_completion(&host->dma_complete);

	if (data->flags & MMC_DATA_READ) {
		if (host->chan_rx)
			sh_mmcif_start_dma_rx(host);
	} else {
		if (host->chan_tx)
			sh_mmcif_start_dma_tx(host);
	}

	if (!host->dma_active) {
		data->error = sh_mmcif_data_trans(host, host->mrq, cmd->opcode);
		return !data->error;
	}

	/* Running in the IRQ thread, can sleep */
	time = wait_for_completion_interruptible_timeout(&host->dma_complete,
							 host->timeout);

	if (data->flags & MMC_DATA_READ)
		dma_unmap_sg(host->chan_rx->device->dev,
			     data->sg, data->sg_len,
			     DMA_FROM_DEVICE);
	else
		dma_unmap_sg(host->chan_tx->device->dev,
			     data->sg, data->sg_len,
			     DMA_TO_DEVICE);

	if (host->sd_error) {
		dev_err(host->mmc->parent,
			"Error IRQ while waiting for DMA completion!\n");
		/* Woken up by an error IRQ: abort DMA */
		data->error = sh_mmcif_error_manage(host);
	} else if (!time) {
		dev_err(host->mmc->parent, "DMA timeout!\n");
		data->error = -ETIMEDOUT;
	} else if (time < 0) {
		dev_err(host->mmc->parent,
			"wait_for_completion_...() error %ld!\n", time);
		data->error = time;
	}
	sh_mmcif_bitclr(host, MMCIF_CE_BUF_ACC,
			BUF_ACC_DMAREN | BUF_ACC_DMAWEN);
	host->dma_active = false;

	if (data->error) {
		data->bytes_xfered = 0;
		/* Abort DMA */
		if (data->flags & MMC_DATA_READ)
			dmaengine_terminate_all(host->chan_rx);
		else
			dmaengine_terminate_all(host->chan_tx);
	}

	return false;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
guennadi liakhovetski
guennadi liakhovetski
322
74.19%
5
62.50%
teppei kamijou
teppei kamijou
102
23.50%
2
25.00%
kuninori morimoto
kuninori morimoto
10
2.30%
1
12.50%
Total
434
100.00%
8
100.00%



static irqreturn_t sh_mmcif_irqt(int irq, void *dev_id)
{
	struct sh_mmcif_host *host = dev_id;
	struct mmc_request *mrq;
	struct device *dev = sh_mmcif_host_to_dev(host);
	bool wait = false;
	unsigned long flags;
	int wait_work;

	spin_lock_irqsave(&host->lock, flags);
	wait_work = host->wait_for;
	spin_unlock_irqrestore(&host->lock, flags);

	cancel_delayed_work_sync(&host->timeout_work);

	mutex_lock(&host->thread_lock);

	mrq = host->mrq;
	if (!mrq) {
		dev_dbg(dev, "IRQ thread state %u, wait %u: NULL mrq!\n",
			host->state, host->wait_for);
		mutex_unlock(&host->thread_lock);
		return IRQ_HANDLED;
	}

	/*
         * All handlers return true, if processing continues, and false, if the
         * request has to be completed - successfully or not
         */
	switch (wait_work) {
	case MMCIF_WAIT_FOR_REQUEST:
		/* We're too late, the timeout has already kicked in */
		mutex_unlock(&host->thread_lock);
		return IRQ_HANDLED;
	case MMCIF_WAIT_FOR_CMD:
		/* Wait for data? */
		wait = sh_mmcif_end_cmd(host);
		break;
	case MMCIF_WAIT_FOR_MREAD:
		/* Wait for more data? */
		wait = sh_mmcif_mread_block(host);
		break;
	case MMCIF_WAIT_FOR_READ:
		/* Wait for data end? */
		wait = sh_mmcif_read_block(host);
		break;
	case MMCIF_WAIT_FOR_MWRITE:
		/* Wait data to write? */
		wait = sh_mmcif_mwrite_block(host);
		break;
	case MMCIF_WAIT_FOR_WRITE:
		/* Wait for data end? */
		wait = sh_mmcif_write_block(host);
		break;
	case MMCIF_WAIT_FOR_STOP:
		if (host->sd_error) {
			mrq->stop->error = sh_mmcif_error_manage(host);
			dev_dbg(dev, "%s(): %d\n", __func__, mrq->stop->error);
			break;
		}
		sh_mmcif_get_cmd12response(host, mrq->stop);
		mrq->stop->error = 0;
		break;
	case MMCIF_WAIT_FOR_READ_END:
	case MMCIF_WAIT_FOR_WRITE_END:
		if (host->sd_error) {
			mrq->data->error = sh_mmcif_error_manage(host);
			dev_dbg(dev, "%s(): %d\n", __func__, mrq->data->error);
		}
		break;
	default:
		BUG();
	}

	if (wait) {
		schedule_delayed_work(&host->timeout_work, host->timeout);
		/* Wait for more data */
		mutex_unlock(&host->thread_lock);
		return IRQ_HANDLED;
	}

	if (host->wait_for != MMCIF_WAIT_FOR_STOP) {
		struct mmc_data *data = mrq->data;
		if (!mrq->cmd->error && data && !data->error)
			data->bytes_xfered =
				data->blocks * data->blksz;

		if (mrq->stop && !mrq->cmd->error && (!data || !data->error)) {
			sh_mmcif_stop_cmd(host, mrq);
			if (!mrq->stop->error) {
				schedule_delayed_work(&host->timeout_work, host->timeout);
				mutex_unlock(&host->thread_lock);
				return IRQ_HANDLED;
			}
		}
	}

	host->wait_for = MMCIF_WAIT_FOR_REQUEST;
	host->state = STATE_IDLE;
	host->mrq = NULL;
	mmc_request_done(host->mmc, mrq);

	mutex_unlock(&host->thread_lock);

	return IRQ_HANDLED;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
guennadi liakhovetski
guennadi liakhovetski
405
82.32%
5
55.56%
kouichi tomita
kouichi tomita
34
6.91%
1
11.11%
teppei kamijou
teppei kamijou
32
6.50%
1
11.11%
arnd hannemann
arnd hannemann
11
2.24%
1
11.11%
kuninori morimoto
kuninori morimoto
10
2.03%
1
11.11%
Total
492
100.00%
9
100.00%



static irqreturn_t sh_mmcif_intr(int irq, void *dev_id)
{
	struct sh_mmcif_host *host = dev_id;
	struct device *dev = sh_mmcif_host_to_dev(host);
	u32 state, mask;

	state = sh_mmcif_readl(host->addr, MMCIF_CE_INT);
	mask = sh_mmcif_readl(host->addr, MMCIF_CE_INT_MASK);
	if (host->ccs_enable)
		sh_mmcif_writel(host->addr, MMCIF_CE_INT, ~(state & mask));
	else
		sh_mmcif_writel(host->addr, MMCIF_CE_INT, INT_CCS | ~(state & mask));
	sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, state & MASK_CLEAN);

	if (state & ~MASK_CLEAN)
		dev_dbg(dev, "IRQ state = 0x%08x incompletely cleared\n",
			state);

	if (state & INT_ERR_STS || state & ~INT_ALL) {
		host->sd_error = true;
		dev_dbg(dev, "int err state = 0x%08x\n", state);
	}
	if (state & ~(INT_CMD12RBE | INT_CMD12CRE)) {
		if (!host->mrq)
			dev_dbg(dev, "NULL IRQ state = 0x%08x\n", state);
		if (!host->dma_active)
			return IRQ_WAKE_THREAD;
		else if (host->sd_error)
			sh_mmcif_dma_complete(host);
	} else {
		dev_dbg(dev, "Unexpected IRQ 0x%x\n", state);
	}

	return IRQ_HANDLED;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
guennadi liakhovetski
guennadi liakhovetski
114
52.05%
7
63.64%
yusuke goda
yusuke goda
91
41.55%
1
9.09%
kuninori morimoto
kuninori morimoto
11
5.02%
2
18.18%
magnus damm
magnus damm
3
1.37%
1
9.09%
Total
219
100.00%
11
100.00%



static void sh_mmcif_timeout_work(struct work_struct *work)
{
	struct delayed_work *d = to_delayed_work(work);
	struct sh_mmcif_host *host = container_of(d, struct sh_mmcif_host, timeout_work);
	struct mmc_request *mrq = host->mrq;
	struct device *dev = sh_mmcif_host_to_dev(host);
	unsigned long flags;

	if (host->dying)
		/* Don't run after mmc_remove_host() */
		return;

	spin_lock_irqsave(&host->lock, flags);
	if (host->state == STATE_IDLE) {
		spin_unlock_irqrestore(&host->lock, flags);
		return;
	}

	dev_err(dev, "Timeout waiting for %u on CMD%u\n",
		host->wait_for, mrq->cmd->opcode);

	host->state = STATE_TIMEOUT;
	spin_unlock_irqrestore(&host->lock, flags);

	/*
         * Handle races with cancel_delayed_work(), unless
         * cancel_delayed_work_sync() is used
         */
	switch (host->wait_for) {
	case MMCIF_WAIT_FOR_CMD:
		mrq->cmd->error = sh_mmcif_error_manage(host);
		break;
	case MMCIF_WAIT_FOR_STOP:
		mrq->stop->error = sh_mmcif_error_manage(host);
		break;
	case MMCIF_WAIT_FOR_MREAD:
	case MMCIF_WAIT_FOR_MWRITE:
	case MMCIF_WAIT_FOR_READ:
	case MMCIF_WAIT_FOR_WRITE:
	case MMCIF_WAIT_FOR_READ_END:
	case MMCIF_WAIT_FOR_WRITE_END:
		mrq->data->error = sh_mmcif_error_manage(host);
		break;
	default:
		BUG();
	}

	host->state = STATE_IDLE;
	host->wait_for = MMCIF_WAIT_FOR_REQUEST;
	host->mrq = NULL;
	mmc_request_done(host->mmc, mrq);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
guennadi liakhovetski
guennadi liakhovetski
202
87.45%
3
42.86%
kouichi tomita
kouichi tomita
17
7.36%
1
14.29%
kuninori morimoto
kuninori morimoto
11
4.76%
2
28.57%
geliang tang
geliang tang
1
0.43%
1
14.29%
Total
231
100.00%
7
100.00%



static void sh_mmcif_init_ocr(struct sh_mmcif_host *host)
{
	struct device *dev = sh_mmcif_host_to_dev(host);
	struct sh_mmcif_plat_data *pd = dev->platform_data;
	struct mmc_host *mmc = host->mmc;

	mmc_regulator_get_supply(mmc);

	if (!pd)
		return;

	if (!mmc->ocr_avail)
		mmc->ocr_avail = pd->ocr;
	else if (pd->ocr)
		dev_warn(mmc_dev(mmc), "Platform OCR mask is ignored\n");
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
guennadi liakhovetski
guennadi liakhovetski
71
86.59%
2
66.67%
kuninori morimoto
kuninori morimoto
11
13.41%
1
33.33%
Total
82
100.00%
3
100.00%



static int sh_mmcif_probe(struct platform_device *pdev)
{
	int ret = 0, irq[2];
	struct mmc_host *mmc;
	struct sh_mmcif_host *host;
	struct device *dev = &pdev->dev;
	struct sh_mmcif_plat_data *pd = dev->platform_data;
	struct resource *res;
	void __iomem *reg;
	const char *name;

	irq[0] = platform_get_irq(pdev, 0);
	irq[1] = platform_get_irq(pdev, 1);
	if (irq[0] < 0) {
		dev_err(dev, "Get irq error\n");
		return -ENXIO;
	}

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	reg = devm_ioremap_resource(dev, res);
	if (IS_ERR(reg))
		return PTR_ERR(reg);

	mmc = mmc_alloc_host(sizeof(struct sh_mmcif_host), dev);
	if (!mmc)
		return -ENOMEM;

	ret = mmc_of_parse(mmc);
	if (ret < 0)
		goto err_host;

	host		= mmc_priv(mmc);
	host->mmc	= mmc;
	host->addr	= reg;
	host->timeout	= msecs_to_jiffies(10000);
	host->ccs_enable = !pd || !pd->ccs_unsupported;
	host->clk_ctrl2_enable = pd && pd->clk_ctrl2_present;

	host->pd = pdev;

	spin_lock_init(&host->lock);

	mmc->ops = &sh_mmcif_ops;
	sh_mmcif_init_ocr(host);

	mmc->caps |= MMC_CAP_MMC_HIGHSPEED | MMC_CAP_WAIT_WHILE_BUSY;
	if (pd && pd->caps)
		mmc->caps |= pd->caps;
	mmc->max_segs = 32;
	mmc->max_blk_size = 512;
	mmc->max_req_size = PAGE_SIZE * mmc->max_segs;
	mmc->max_blk_count = mmc->max_req_size / mmc->max_blk_size;
	mmc->max_seg_size = mmc->max_req_size;

	platform_set_drvdata(pdev, host);

	host->clk = devm_clk_get(dev, NULL);
	if (IS_ERR(host->clk)) {
		ret = PTR_ERR(host->clk);
		dev_err(dev, "cannot get clock: %d\n", ret);
		goto err_host;
	}

	ret = clk_prepare_enable(host->clk);
	if (ret < 0)
		goto err_host;

	sh_mmcif_clk_setup(host);

	pm_runtime_enable(dev);
	host->power = false;

	ret = pm_runtime_get_sync(dev);
	if (ret < 0)
		goto err_clk;

	INIT_DELAYED_WORK(&host->timeout_work, sh_mmcif_timeout_work);

	sh_mmcif_sync_reset(host);
	sh_mmcif_writel(host->addr, MMCIF_CE_INT_MASK, MASK_ALL);

	name = irq[1] < 0 ? dev_name(dev) : "sh_mmc:error";
	ret = devm_request_threaded_irq(dev, irq[0], sh_mmcif_intr,
					sh_mmcif_irqt, 0, name, host);
	if (ret) {
		dev_err(dev, "request_irq error (%s)\n", name);
		goto err_clk;
	}
	if (irq[1] >= 0) {
		ret = devm_request_threaded_irq(dev, irq[1],
						sh_mmcif_intr, sh_mmcif_irqt,
						0, "sh_mmc:int", host);
		if (ret) {
			dev_err(dev, "request_irq error (sh_mmc:int)\n");
			goto err_clk;
		}
	}

	if (pd && pd->use_cd_gpio) {
		ret = mmc_gpio_request_cd(mmc, pd->cd_gpio, 0);
		if (ret < 0)
			goto err_clk;
	}

	mutex_init(&host->thread_lock);

	ret = mmc_add_host(mmc);
	if (ret < 0)
		goto err_clk;

	dev_pm_qos_expose_latency_limit(dev, 100);

	dev_info(dev, "Chip version 0x%04x, clock rate %luMHz\n",
		 sh_mmcif_readl(host->addr, MMCIF_CE_VERSION) & 0xffff,
		 clk_get_rate(host->clk) / 1000000UL);

	pm_runtime_put(dev);
	clk_disable_unprepare(host->clk);
	return ret;

err_clk:
	clk_disable_unprepare(host->clk);
	pm_runtime_put_sync(dev);
	pm_runtime_disable(dev);
err_host:
	mmc_free_host(mmc);
	return ret;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
yusuke goda
yusuke goda
310
44.99%
1
2.50%
guennadi liakhovetski
guennadi liakhovetski
220
31.93%
17
42.50%
ben dooks
ben dooks
42
6.10%
6
15.00%
shinya kuribayashi
shinya kuribayashi
36
5.22%
1
2.50%
kuninori morimoto
kuninori morimoto
26
3.77%
4
10.00%
ulf hansson
ulf hansson
25
3.63%
2
5.00%
simon baatz
simon baatz
11
1.60%
1
2.50%
rafael j. wysocki
rafael j. wysocki
7
1.02%
1
2.50%
teppei kamijou
teppei kamijou
5
0.73%
2
5.00%
magnus damm
magnus damm
2
0.29%
1
2.50%
laurent pinchart
laurent pinchart
2
0.29%
1
2.50%
kirill a. shutemov
kirill a. shutemov
1
0.15%
1
2.50%
martin k. petersen
martin k. petersen
1
0.15%
1
2.50%
takeshi kihara
takeshi kihara
1
0.15%
1
2.50%
Total
689
100.00%
40
100.00%



static int sh_mmcif_remove(struct platform_device *pdev)
{
	struct sh_mmcif_host *host = platform_get_drvdata(pdev);

	host->dying = true;
	clk_prepare_enable(host->clk);
	pm_runtime_get_sync(&pdev->dev);

	dev_pm_qos_hide_latency_limit(&pdev->dev);

	mmc_remove_host(host->mmc);
	sh_mmcif_writel(host->addr, MMCIF_CE_INT_MASK, MASK_ALL);

	/*
         * FIXME: cancel_delayed_work(_sync)() and free_irq() race with the
         * mmc_remove_host() call above. But swapping order doesn't help either
         * (a query on the linux-mmc mailing list didn't bring any replies).
         */
	cancel_delayed_work_sync(&host->timeout_work);

	clk_disable_unprepare(host->clk);
	mmc_free_host(host->mmc);
	pm_runtime_put_sync(&pdev->dev);
	pm_runtime_disable(&pdev->dev);

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
guennadi liakhovetski
guennadi liakhovetski
67
60.91%
7
63.64%
yusuke goda
yusuke goda
31
28.18%
1
9.09%
rafael j. wysocki
rafael j. wysocki
8
7.27%
1
9.09%
kuninori morimoto
kuninori morimoto
2
1.82%
1
9.09%
ulf hansson
ulf hansson
2
1.82%
1
9.09%
Total
110
100.00%
11
100.00%

#ifdef CONFIG_PM_SLEEP


static int sh_mmcif_suspend(struct device *dev)
{
	struct sh_mmcif_host *host = dev_get_drvdata(dev);

	pm_runtime_get_sync(dev);
	sh_mmcif_writel(host->addr, MMCIF_CE_INT_MASK, MASK_ALL);
	pm_runtime_put(dev);

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
guennadi liakhovetski
guennadi liakhovetski
34
75.56%
2
50.00%
koji matsuoka
koji matsuoka
10
22.22%
1
25.00%
ulf hansson
ulf hansson
1
2.22%
1
25.00%
Total
45
100.00%
4
100.00%



static int sh_mmcif_resume(struct device *dev)
{
	return 0;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
guennadi liakhovetski
guennadi liakhovetski
13
92.86%
1
50.00%
ulf hansson
ulf hansson
1
7.14%
1
50.00%
Total
14
100.00%
2
100.00%

#endif


static const struct dev_pm_ops sh_mmcif_dev_pm_ops = {
	SET_SYSTEM_SLEEP_PM_OPS(sh_mmcif_suspend, sh_mmcif_resume)
};


static struct platform_driver sh_mmcif_driver = {
	.probe		= sh_mmcif_probe,
	.remove		= sh_mmcif_remove,
	.driver		= {
		.name	= DRIVER_NAME,
		.pm	= &sh_mmcif_dev_pm_ops,
		.of_match_table = sh_mmcif_of_match,
        },
};


module_platform_driver(sh_mmcif_driver);

MODULE_DESCRIPTION("SuperH on-chip MMC/eMMC interface driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:" DRIVER_NAME);
MODULE_AUTHOR("Yusuke Goda <yusuke.goda.sx@renesas.com>");
Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
guennadi liakhovetski
guennadi liakhovetski
3494
46.74%
37
40.66%
yusuke goda
yusuke goda
2329
31.16%
1
1.10%
kuninori morimoto
kuninori morimoto
651
8.71%
7
7.69%
teppei kamijou
teppei kamijou
288
3.85%
6
6.59%
arnd bergmann
arnd bergmann
160
2.14%
1
1.10%
ulf hansson
ulf hansson
121
1.62%
6
6.59%
laurent pinchart
laurent pinchart
101
1.35%
5
5.49%
kouichi tomita
kouichi tomita
75
1.00%
2
2.20%
magnus damm
magnus damm
55
0.74%
1
1.10%
ben dooks
ben dooks
42
0.56%
6
6.59%
arnd hannemann
arnd hannemann
42
0.56%
1
1.10%
shinya kuribayashi
shinya kuribayashi
36
0.48%
1
1.10%
linus walleij
linus walleij
20
0.27%
3
3.30%
rafael j. wysocki
rafael j. wysocki
18
0.24%
1
1.10%
simon baatz
simon baatz
11
0.15%
1
1.10%
koji matsuoka
koji matsuoka
10
0.13%
1
1.10%
simon horman
simon horman
6
0.08%
1
1.10%
paul gortmaker
paul gortmaker
3
0.04%
1
1.10%
alexandre bounine
alexandre bounine
2
0.03%
1
1.10%
axel lin
axel lin
2
0.03%
1
1.10%
seungwon jeon
seungwon jeon
2
0.03%
1
1.10%
vinod koul
vinod koul
2
0.03%
1
1.10%
geliang tang
geliang tang
1
0.01%
1
1.10%
kirill a. shutemov
kirill a. shutemov
1
0.01%
1
1.10%
takeshi kihara
takeshi kihara
1
0.01%
1
1.10%
martin k. petersen
martin k. petersen
1
0.01%
1
1.10%
chris paterson
chris paterson
1
0.01%
1
1.10%
Total
7475
100.00%
91
100.00%
  
Directory: drivers/mmc/host

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