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Release 4.14 drivers/mmc/host/pxamci.c

Directory: drivers/mmc/host
/*
 *  linux/drivers/mmc/host/pxa.c - PXA MMCI driver
 *
 *  Copyright (C) 2003 Russell King, All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 *  This hardware is really sick:
 *   - No way to clear interrupts.
 *   - Have to turn off the clock whenever we touch the device.
 *   - Doesn't tell you how many data blocks were transferred.
 *  Yuck!
 *
 *      1 and 3 byte data transfers not supported
 *      max block length up to 1023
 */
#include <linux/module.h>
#include <linux/init.h>
#include <linux/ioport.h>
#include <linux/platform_device.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/dmaengine.h>
#include <linux/dma-mapping.h>
#include <linux/dma/pxa-dma.h>
#include <linux/clk.h>
#include <linux/err.h>
#include <linux/mmc/host.h>
#include <linux/mmc/slot-gpio.h>
#include <linux/io.h>
#include <linux/regulator/consumer.h>
#include <linux/gpio.h>
#include <linux/gfp.h>
#include <linux/of.h>
#include <linux/of_gpio.h>
#include <linux/of_device.h>

#include <asm/sizes.h>

#include <mach/hardware.h>
#include <linux/platform_data/mmc-pxamci.h>

#include "pxamci.h"


#define DRIVER_NAME	"pxa2xx-mci"


#define NR_SG	1

#define CLKRT_OFF	(~0)


#define mmc_has_26MHz()		(cpu_is_pxa300() || cpu_is_pxa310() \
                                || cpu_is_pxa935())


struct pxamci_host {
	
struct mmc_host		*mmc;
	
spinlock_t		lock;
	
struct resource		*res;
	
void __iomem		*base;
	
struct clk		*clk;
	
unsigned long		clkrate;
	
int			irq;
	
unsigned int		clkrt;
	
unsigned int		cmdat;
	
unsigned int		imask;
	
unsigned int		power_mode;
	
struct pxamci_platform_data *pdata;

	
struct mmc_request	*mrq;
	
struct mmc_command	*cmd;
	
struct mmc_data		*data;

	
struct dma_chan		*dma_chan_rx;
	
struct dma_chan		*dma_chan_tx;
	
dma_cookie_t		dma_cookie;
	
dma_addr_t		sg_dma;
	
unsigned int		dma_len;

	
unsigned int		dma_dir;
	
unsigned int		dma_drcmrrx;
	
unsigned int		dma_drcmrtx;

	
struct regulator	*vcc;
};


static inline void pxamci_init_ocr(struct pxamci_host *host) { #ifdef CONFIG_REGULATOR host->vcc = devm_regulator_get_optional(mmc_dev(host->mmc), "vmmc"); if (IS_ERR(host->vcc)) host->vcc = NULL; else { host->mmc->ocr_avail = mmc_regulator_get_ocrmask(host->vcc); if (host->pdata && host->pdata->ocr_mask) dev_warn(mmc_dev(host->mmc), "ocr_mask/setpower will not be used\n"); } #endif if (host->vcc == NULL) { /* fall-back to platform data */ host->mmc->ocr_avail = host->pdata ? host->pdata->ocr_mask : MMC_VDD_32_33 | MMC_VDD_33_34; } }

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static inline int pxamci_set_power(struct pxamci_host *host, unsigned char power_mode, unsigned int vdd) { int on; if (host->vcc) { int ret; if (power_mode == MMC_POWER_UP) { ret = mmc_regulator_set_ocr(host->mmc, host->vcc, vdd); if (ret) return ret; } else if (power_mode == MMC_POWER_OFF) { ret = mmc_regulator_set_ocr(host->mmc, host->vcc, 0); if (ret) return ret; } } if (!host->vcc && host->pdata && gpio_is_valid(host->pdata->gpio_power)) { on = ((1 << vdd) & host->pdata->ocr_mask); gpio_set_value(host->pdata->gpio_power, !!on ^ host->pdata->gpio_power_invert); } if (!host->vcc && host->pdata && host->pdata->setpower) return host->pdata->setpower(mmc_dev(host->mmc), vdd); return 0; }

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static void pxamci_stop_clock(struct pxamci_host *host) { if (readl(host->base + MMC_STAT) & STAT_CLK_EN) { unsigned long timeout = 10000; unsigned int v; writel(STOP_CLOCK, host->base + MMC_STRPCL); do { v = readl(host->base + MMC_STAT); if (!(v & STAT_CLK_EN)) break; udelay(1); } while (timeout--); if (v & STAT_CLK_EN) dev_err(mmc_dev(host->mmc), "unable to stop clock\n"); } }

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static void pxamci_enable_irq(struct pxamci_host *host, unsigned int mask) { unsigned long flags; spin_lock_irqsave(&host->lock, flags); host->imask &= ~mask; writel(host->imask, host->base + MMC_I_MASK); spin_unlock_irqrestore(&host->lock, flags); }

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static void pxamci_disable_irq(struct pxamci_host *host, unsigned int mask) { unsigned long flags; spin_lock_irqsave(&host->lock, flags); host->imask |= mask; writel(host->imask, host->base + MMC_I_MASK); spin_unlock_irqrestore(&host->lock, flags); }

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static void pxamci_dma_irq(void *param);
static void pxamci_setup_data(struct pxamci_host *host, struct mmc_data *data) { struct dma_async_tx_descriptor *tx; enum dma_data_direction direction; struct dma_slave_config config; struct dma_chan *chan; unsigned int nob = data->blocks; unsigned long long clks; unsigned int timeout; int ret; host->data = data; writel(nob, host->base + MMC_NOB); writel(data->blksz, host->base + MMC_BLKLEN); clks = (unsigned long long)data->timeout_ns * host->clkrate; do_div(clks, 1000000000UL); timeout = (unsigned int)clks + (data->timeout_clks << host->clkrt); writel((timeout + 255) / 256, host->base + MMC_RDTO); memset(&config, 0, sizeof(config)); config.src_addr_width = DMA_SLAVE_BUSWIDTH_1_BYTE; config.dst_addr_width = DMA_SLAVE_BUSWIDTH_1_BYTE; config.src_addr = host->res->start + MMC_RXFIFO; config.dst_addr = host->res->start + MMC_TXFIFO; config.src_maxburst = 32; config.dst_maxburst = 32; if (data->flags & MMC_DATA_READ) { host->dma_dir = DMA_FROM_DEVICE; direction = DMA_DEV_TO_MEM; chan = host->dma_chan_rx; } else { host->dma_dir = DMA_TO_DEVICE; direction = DMA_MEM_TO_DEV; chan = host->dma_chan_tx; } config.direction = direction; ret = dmaengine_slave_config(chan, &config); if (ret < 0) { dev_err(mmc_dev(host->mmc), "dma slave config failed\n"); return; } host->dma_len = dma_map_sg(chan->device->dev, data->sg, data->sg_len, host->dma_dir); tx = dmaengine_prep_slave_sg(chan, data->sg, host->dma_len, direction, DMA_PREP_INTERRUPT); if (!tx) { dev_err(mmc_dev(host->mmc), "prep_slave_sg() failed\n"); return; } if (!(data->flags & MMC_DATA_READ)) { tx->callback = pxamci_dma_irq; tx->callback_param = host; } host->dma_cookie = dmaengine_submit(tx); /* * workaround for erratum #91: * only start DMA now if we are doing a read, * otherwise we wait until CMD/RESP has finished * before starting DMA. */ if (!cpu_is_pxa27x() || data->flags & MMC_DATA_READ) dma_async_issue_pending(chan); }

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static void pxamci_start_cmd(struct pxamci_host *host, struct mmc_command *cmd, unsigned int cmdat) { WARN_ON(host->cmd != NULL); host->cmd = cmd; if (cmd->flags & MMC_RSP_BUSY) cmdat |= CMDAT_BUSY; #define RSP_TYPE(x) ((x) & ~(MMC_RSP_BUSY|MMC_RSP_OPCODE)) switch (RSP_TYPE(mmc_resp_type(cmd))) { case RSP_TYPE(MMC_RSP_R1): /* r1, r1b, r6, r7 */ cmdat |= CMDAT_RESP_SHORT; break; case RSP_TYPE(MMC_RSP_R3): cmdat |= CMDAT_RESP_R3; break; case RSP_TYPE(MMC_RSP_R2): cmdat |= CMDAT_RESP_R2; break; default: break; } writel(cmd->opcode, host->base + MMC_CMD); writel(cmd->arg >> 16, host->base + MMC_ARGH); writel(cmd->arg & 0xffff, host->base + MMC_ARGL); writel(cmdat, host->base + MMC_CMDAT); writel(host->clkrt, host->base + MMC_CLKRT); writel(START_CLOCK, host->base + MMC_STRPCL); pxamci_enable_irq(host, END_CMD_RES); }

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static void pxamci_finish_request(struct pxamci_host *host, struct mmc_request *mrq) { host->mrq = NULL; host->cmd = NULL; host->data = NULL; mmc_request_done(host->mmc, mrq); }

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static int pxamci_cmd_done(struct pxamci_host *host, unsigned int stat) { struct mmc_command *cmd = host->cmd; int i; u32 v; if (!cmd) return 0; host->cmd = NULL; /* * Did I mention this is Sick. We always need to * discard the upper 8 bits of the first 16-bit word. */ v = readl(host->base + MMC_RES) & 0xffff; for (i = 0; i < 4; i++) { u32 w1 = readl(host->base + MMC_RES) & 0xffff; u32 w2 = readl(host->base + MMC_RES) & 0xffff; cmd->resp[i] = v << 24 | w1 << 8 | w2 >> 8; v = w2; } if (stat & STAT_TIME_OUT_RESPONSE) { cmd->error = -ETIMEDOUT; } else if (stat & STAT_RES_CRC_ERR && cmd->flags & MMC_RSP_CRC) { /* * workaround for erratum #42: * Intel PXA27x Family Processor Specification Update Rev 001 * A bogus CRC error can appear if the msb of a 136 bit * response is a one. */ if (cpu_is_pxa27x() && (cmd->flags & MMC_RSP_136 && cmd->resp[0] & 0x80000000)) pr_debug("ignoring CRC from command %d - *risky*\n", cmd->opcode); else cmd->error = -EILSEQ; } pxamci_disable_irq(host, END_CMD_RES); if (host->data && !cmd->error) { pxamci_enable_irq(host, DATA_TRAN_DONE); /* * workaround for erratum #91, if doing write * enable DMA late */ if (cpu_is_pxa27x() && host->data->flags & MMC_DATA_WRITE) dma_async_issue_pending(host->dma_chan_tx); } else { pxamci_finish_request(host, host->mrq); } return 1; }

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static int pxamci_data_done(struct pxamci_host *host, unsigned int stat) { struct mmc_data *data = host->data; struct dma_chan *chan; if (!data) return 0; if (data->flags & MMC_DATA_READ) chan = host->dma_chan_rx; else chan = host->dma_chan_tx; dma_unmap_sg(chan->device->dev, data->sg, data->sg_len, host->dma_dir); if (stat & STAT_READ_TIME_OUT) data->error = -ETIMEDOUT; else if (stat & (STAT_CRC_READ_ERROR|STAT_CRC_WRITE_ERROR)) data->error = -EILSEQ; /* * There appears to be a hardware design bug here. There seems to * be no way to find out how much data was transferred to the card. * This means that if there was an error on any block, we mark all * data blocks as being in error. */ if (!data->error) data->bytes_xfered = data->blocks * data->blksz; else data->bytes_xfered = 0; pxamci_disable_irq(host, DATA_TRAN_DONE); host->data = NULL; if (host->mrq->stop) { pxamci_stop_clock(host); pxamci_start_cmd(host, host->mrq->stop, host->cmdat); } else { pxamci_finish_request(host, host->mrq); } return 1; }

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Vernon Sauder21.03%110.00%
Total195100.00%10100.00%


static irqreturn_t pxamci_irq(int irq, void *devid) { struct pxamci_host *host = devid; unsigned int ireg; int handled = 0; ireg = readl(host->base + MMC_I_REG) & ~readl(host->base + MMC_I_MASK); if (ireg) { unsigned stat = readl(host->base + MMC_STAT); pr_debug("PXAMCI: irq %08x stat %08x\n", ireg, stat); if (ireg & END_CMD_RES) handled |= pxamci_cmd_done(host, stat); if (ireg & DATA_TRAN_DONE) handled |= pxamci_data_done(host, stat); if (ireg & SDIO_INT) { mmc_signal_sdio_irq(host->mmc); handled = 1; } } return IRQ_RETVAL(handled); }

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static void pxamci_request(struct mmc_host *mmc, struct mmc_request *mrq) { struct pxamci_host *host = mmc_priv(mmc); unsigned int cmdat; WARN_ON(host->mrq != NULL); host->mrq = mrq; pxamci_stop_clock(host); cmdat = host->cmdat; host->cmdat &= ~CMDAT_INIT; if (mrq->data) { pxamci_setup_data(host, mrq->data); cmdat &= ~CMDAT_BUSY; cmdat |= CMDAT_DATAEN | CMDAT_DMAEN; if (mrq->data->flags & MMC_DATA_WRITE) cmdat |= CMDAT_WRITE; } pxamci_start_cmd(host, mrq->cmd, cmdat); }

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static int pxamci_get_ro(struct mmc_host *mmc) { struct pxamci_host *host = mmc_priv(mmc); if (host->pdata && gpio_is_valid(host->pdata->gpio_card_ro)) return mmc_gpio_get_ro(mmc); if (host->pdata && host->pdata->get_ro) return !!host->pdata->get_ro(mmc_dev(mmc)); /* * Board doesn't support read only detection; let the mmc core * decide what to do. */ return -ENOSYS; }

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static void pxamci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) { struct pxamci_host *host = mmc_priv(mmc); if (ios->clock) { unsigned long rate = host->clkrate; unsigned int clk = rate / ios->clock; if (host->clkrt == CLKRT_OFF) clk_prepare_enable(host->clk); if (ios->clock == 26000000) { /* to support 26MHz */ host->clkrt = 7; } else { /* to handle (19.5MHz, 26MHz) */ if (!clk) clk = 1; /* * clk might result in a lower divisor than we * desire. check for that condition and adjust * as appropriate. */ if (rate / clk > ios->clock) clk <<= 1; host->clkrt = fls(clk) - 1; } /* * we write clkrt on the next command */ } else { pxamci_stop_clock(host); if (host->clkrt != CLKRT_OFF) { host->clkrt = CLKRT_OFF; clk_disable_unprepare(host->clk); } } if (host->power_mode != ios->power_mode) { int ret; host->power_mode = ios->power_mode; ret = pxamci_set_power(host, ios->power_mode, ios->vdd); if (ret) { dev_err(mmc_dev(mmc), "unable to set power\n"); /* * The .set_ios() function in the mmc_host_ops * struct return void, and failing to set the * power should be rare so we print an error and * return here. */ return; } if (ios->power_mode == MMC_POWER_ON) host->cmdat |= CMDAT_INIT; } if (ios->bus_width == MMC_BUS_WIDTH_4) host->cmdat |= CMDAT_SD_4DAT; else host->cmdat &= ~CMDAT_SD_4DAT; dev_dbg(mmc_dev(mmc), "PXAMCI: clkrt = %x cmdat = %x\n", host->clkrt, host->cmdat); }

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Robert Jarzmik20.75%17.69%
Daniel Ribeiro20.75%17.69%
Haojian Zhuang10.38%17.69%
Sascha Hauer10.38%17.69%
Total265100.00%13100.00%


static void pxamci_enable_sdio_irq(struct mmc_host *host, int enable) { struct pxamci_host *pxa_host = mmc_priv(host); if (enable) pxamci_enable_irq(pxa_host, SDIO_INT); else pxamci_disable_irq(pxa_host, SDIO_INT); }

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static const struct mmc_host_ops pxamci_ops = { .request = pxamci_request, .get_cd = mmc_gpio_get_cd, .get_ro = pxamci_get_ro, .set_ios = pxamci_set_ios, .enable_sdio_irq = pxamci_enable_sdio_irq, };
static void pxamci_dma_irq(void *param) { struct pxamci_host *host = param; struct dma_tx_state state; enum dma_status status; struct dma_chan *chan; unsigned long flags; spin_lock_irqsave(&host->lock, flags); if (!host->data) goto out_unlock; if (host->data->flags & MMC_DATA_READ) chan = host->dma_chan_rx; else chan = host->dma_chan_tx; status = dmaengine_tx_status(chan, host->dma_cookie, &state); if (likely(status == DMA_COMPLETE)) { writel(BUF_PART_FULL, host->base + MMC_PRTBUF); } else { pr_err("%s: DMA error on %s channel\n", mmc_hostname(host->mmc), host->data->flags & MMC_DATA_READ ? "rx" : "tx"); host->data->error = -EIO; pxamci_data_done(host, 0); } out_unlock: spin_unlock_irqrestore(&host->lock, flags); }

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static irqreturn_t pxamci_detect_irq(int irq, void *devid) { struct pxamci_host *host = mmc_priv(devid); mmc_detect_change(devid, msecs_to_jiffies(host->pdata->detect_delay_ms)); return IRQ_HANDLED; }

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#ifdef CONFIG_OF static const struct of_device_id pxa_mmc_dt_ids[] = { { .compatible = "marvell,pxa-mmc" }, { } }; MODULE_DEVICE_TABLE(of, pxa_mmc_dt_ids);
static int pxamci_of_init(struct platform_device *pdev) { struct device_node *np = pdev->dev.of_node; struct pxamci_platform_data *pdata; u32 tmp; if (!np) return 0; pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); if (!pdata) return -ENOMEM; pdata->gpio_card_detect = of_get_named_gpio(np, "cd-gpios", 0); pdata->gpio_card_ro = of_get_named_gpio(np, "wp-gpios", 0); /* pxa-mmc specific */ pdata->gpio_power = of_get_named_gpio(np, "pxa-mmc,gpio-power", 0); if (of_property_read_u32(np, "pxa-mmc,detect-delay-ms", &tmp) == 0) pdata->detect_delay_ms = tmp; pdev->dev.platform_data = pdata; return 0; }

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#else
static int pxamci_of_init(struct platform_device *pdev) { return 0; }

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Total14100.00%1100.00%

#endif
static int pxamci_probe(struct platform_device *pdev) { struct mmc_host *mmc; struct pxamci_host *host = NULL; struct resource *r, *dmarx, *dmatx; struct pxad_param param_rx, param_tx; int ret, irq, gpio_cd = -1, gpio_ro = -1, gpio_power = -1; dma_cap_mask_t mask; ret = pxamci_of_init(pdev); if (ret) return ret; r = platform_get_resource(pdev, IORESOURCE_MEM, 0); irq = platform_get_irq(pdev, 0); if (irq < 0) return irq; mmc = mmc_alloc_host(sizeof(struct pxamci_host), &pdev->dev); if (!mmc) { ret = -ENOMEM; goto out; } mmc->ops = &pxamci_ops; /* * We can do SG-DMA, but we don't because we never know how much * data we successfully wrote to the card. */ mmc->max_segs = NR_SG; /* * Our hardware DMA can handle a maximum of one page per SG entry. */ mmc->max_seg_size = PAGE_SIZE; /* * Block length register is only 10 bits before PXA27x. */ mmc->max_blk_size = cpu_is_pxa25x() ? 1023 : 2048; /* * Block count register is 16 bits. */ mmc->max_blk_count = 65535; host = mmc_priv(mmc); host->mmc = mmc; host->pdata = pdev->dev.platform_data; host->clkrt = CLKRT_OFF; host->clk = devm_clk_get(&pdev->dev, NULL); if (IS_ERR(host->clk)) { ret = PTR_ERR(host->clk); host->clk = NULL; goto out; } host->clkrate = clk_get_rate(host->clk); /* * Calculate minimum clock rate, rounding up. */ mmc->f_min = (host->clkrate + 63) / 64; mmc->f_max = (mmc_has_26MHz()) ? 26000000 : host->clkrate; pxamci_init_ocr(host); mmc->caps = 0; host->cmdat = 0; if (!cpu_is_pxa25x()) { mmc->caps |= MMC_CAP_4_BIT_DATA | MMC_CAP_SDIO_IRQ; host->cmdat |= CMDAT_SDIO_INT_EN; if (mmc_has_26MHz()) mmc->caps |= MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED; } spin_lock_init(&host->lock); host->res = r; host->irq = irq; host->imask = MMC_I_MASK_ALL; host->base = devm_ioremap_resource(&pdev->dev, r); if (IS_ERR(host->base)) { ret = PTR_ERR(host->base); goto out; } /* * Ensure that the host controller is shut down, and setup * with our defaults. */ pxamci_stop_clock(host); writel(0, host->base + MMC_SPI); writel(64, host->base + MMC_RESTO); writel(host->imask, host->base + MMC_I_MASK); ret = devm_request_irq(&pdev->dev, host->irq, pxamci_irq, 0, DRIVER_NAME, host); if (ret) goto out; platform_set_drvdata(pdev, mmc); if (!pdev->dev.of_node) { dmarx = platform_get_resource(pdev, IORESOURCE_DMA, 0); dmatx = platform_get_resource(pdev, IORESOURCE_DMA, 1); if (!dmarx || !dmatx) { ret = -ENXIO; goto out; } param_rx.prio = PXAD_PRIO_LOWEST; param_rx.drcmr = dmarx->start; param_tx.prio = PXAD_PRIO_LOWEST; param_tx.drcmr = dmatx->start; } dma_cap_zero(mask); dma_cap_set(DMA_SLAVE, mask); host->dma_chan_rx = dma_request_slave_channel_compat(mask, pxad_filter_fn, &param_rx, &pdev->dev, "rx"); if (host->dma_chan_rx == NULL) { dev_err(&pdev->dev, "unable to request rx dma channel\n"); ret = -ENODEV; goto out; } host->dma_chan_tx = dma_request_slave_channel_compat(mask, pxad_filter_fn, &param_tx, &pdev->dev, "tx"); if (host->dma_chan_tx == NULL) { dev_err(&pdev->dev, "unable to request tx dma channel\n"); ret = -ENODEV; goto out; } if (host->pdata) { gpio_cd = host->pdata->gpio_card_detect; gpio_ro = host->pdata->gpio_card_ro; gpio_power = host->pdata->gpio_power; } if (gpio_is_valid(gpio_power)) { ret = devm_gpio_request(&pdev->dev, gpio_power, "mmc card power"); if (ret) { dev_err(&pdev->dev, "Failed requesting gpio_power %d\n", gpio_power); goto out; } gpio_direction_output(gpio_power, host->pdata->gpio_power_invert); } if (gpio_is_valid(gpio_ro)) { ret = mmc_gpio_request_ro(mmc, gpio_ro); if (ret) { dev_err(&pdev->dev, "Failed requesting gpio_ro %d\n", gpio_ro); goto out; } else { mmc->caps2 |= host->pdata->gpio_card_ro_invert ? 0 : MMC_CAP2_RO_ACTIVE_HIGH; } } if (gpio_is_valid(gpio_cd)) ret = mmc_gpio_request_cd(mmc, gpio_cd, 0); if (ret) { dev_err(&pdev->dev, "Failed requesting gpio_cd %d\n", gpio_cd); goto out; } if (host->pdata && host->pdata->init) host->pdata->init(&pdev->dev, pxamci_detect_irq, mmc); if (gpio_is_valid(gpio_power) && host->pdata->setpower) dev_warn(&pdev->dev, "gpio_power and setpower() both defined\n"); if (gpio_is_valid(gpio_ro) && host->pdata->get_ro) dev_warn(&pdev->dev, "gpio_ro and get_ro() both defined\n"); mmc_add_host(mmc); return 0; out: if (host) { if (host->dma_chan_rx) dma_release_channel(host->dma_chan_rx); if (host->dma_chan_tx) dma_release_channel(host->dma_chan_tx); } if (mmc) mmc_free_host(mmc); return ret; }

Contributors

PersonTokensPropCommitsCommitProp
Russell King41442.20%1031.25%
Robert Jarzmik26326.81%618.75%
Daniel Mack16316.62%26.25%
Bridge Wu11011.21%412.50%
Pierre Ossman131.33%26.25%
Nico Pitre70.71%26.25%
Daniel Ribeiro30.31%13.12%
Haojian Zhuang20.20%13.12%
Antonio Ospite20.20%13.12%
David Vrabel20.20%13.12%
Martin K. Petersen10.10%13.12%
Linus Walleij10.10%13.12%
Total981100.00%32100.00%


static int pxamci_remove(struct platform_device *pdev) { struct mmc_host *mmc = platform_get_drvdata(pdev); int gpio_cd = -1, gpio_ro = -1, gpio_power = -1; if (mmc) { struct pxamci_host *host = mmc_priv(mmc); mmc_remove_host(mmc); if (host->pdata) { gpio_cd = host->pdata->gpio_card_detect; gpio_ro = host->pdata->gpio_card_ro; gpio_power = host->pdata->gpio_power; } if (host->pdata && host->pdata->exit) host->pdata->exit(&pdev->dev, mmc); pxamci_stop_clock(host); writel(TXFIFO_WR_REQ|RXFIFO_RD_REQ|CLK_IS_OFF|STOP_CMD| END_CMD_RES|PRG_DONE|DATA_TRAN_DONE, host->base + MMC_I_MASK); dmaengine_terminate_all(host->dma_chan_rx); dmaengine_terminate_all(host->dma_chan_tx); dma_release_channel(host->dma_chan_rx); dma_release_channel(host->dma_chan_tx); mmc_free_host(mmc); } return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Russell King11463.33%337.50%
Robert Jarzmik4826.67%112.50%
Daniel Mack137.22%225.00%
Bridge Wu42.22%112.50%
Nico Pitre10.56%112.50%
Total180100.00%8100.00%

static struct platform_driver pxamci_driver = { .probe = pxamci_probe, .remove = pxamci_remove, .driver = { .name = DRIVER_NAME, .of_match_table = of_match_ptr(pxa_mmc_dt_ids), }, }; module_platform_driver(pxamci_driver); MODULE_DESCRIPTION("PXA Multimedia Card Interface Driver"); MODULE_LICENSE("GPL"); MODULE_ALIAS("platform:pxa2xx-mci");

Overall Contributors

PersonTokensPropCommitsCommitProp
Russell King214952.63%2027.78%
Daniel Mack68816.85%34.17%
Robert Jarzmik4069.94%79.72%
Bridge Wu2586.32%56.94%
Daniel Ribeiro1934.73%11.39%
Nico Pitre1102.69%68.33%
Linus Walleij992.42%22.78%
Richard Purdie651.59%34.17%
Cliff Brake370.91%22.78%
Pierre Ossman240.59%45.56%
Haojian Zhuang80.20%11.39%
Kay Sievers70.17%11.39%
Anton Vorontsov50.12%11.39%
Philipp Zabel40.10%11.39%
Sascha Hauer40.10%11.39%
Eric Miao40.10%11.39%
Pavel Pisa30.07%11.39%
Tejun Heo30.07%11.39%
Arnd Bergmann30.07%22.78%
Axel Lin20.05%11.39%
David Vrabel20.05%11.39%
Vernon Sauder20.05%11.39%
Antonio Ospite20.05%11.39%
David Brownell10.02%11.39%
Girish K.S10.02%11.39%
Philip Langdale10.02%11.39%
Ulf Hansson10.02%11.39%
Martin K. Petersen10.02%11.39%
Total4083100.00%72100.00%
Directory: drivers/mmc/host
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