+++ /dev/null
-/*
- * linux/drivers/mmc/host/msm_sdcc.c - Qualcomm MSM 7X00A SDCC Driver
- *
- * Copyright (C) 2007 Google Inc,
- * Copyright (C) 2003 Deep Blue Solutions, Ltd, All Rights Reserved.
- * Copyright (C) 2009, Code Aurora Forum. 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.
- *
- * Based on mmci.c
- *
- * Author: San Mehat (san@android.com)
- *
- */
-
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/init.h>
-#include <linux/ioport.h>
-#include <linux/device.h>
-#include <linux/interrupt.h>
-#include <linux/delay.h>
-#include <linux/err.h>
-#include <linux/highmem.h>
-#include <linux/log2.h>
-#include <linux/mmc/host.h>
-#include <linux/mmc/card.h>
-#include <linux/mmc/sdio.h>
-#include <linux/clk.h>
-#include <linux/scatterlist.h>
-#include <linux/platform_device.h>
-#include <linux/dma-mapping.h>
-#include <linux/debugfs.h>
-#include <linux/io.h>
-#include <linux/memory.h>
-#include <linux/gfp.h>
-#include <linux/gpio.h>
-
-#include <asm/cacheflush.h>
-#include <asm/div64.h>
-#include <asm/sizes.h>
-
-#include <linux/platform_data/mmc-msm_sdcc.h>
-#include <mach/dma.h>
-#include <mach/clk.h>
-
-#include "msm_sdcc.h"
-
-#define DRIVER_NAME "msm-sdcc"
-
-#define BUSCLK_PWRSAVE 1
-#define BUSCLK_TIMEOUT (HZ)
-static unsigned int msmsdcc_fmin = 144000;
-static unsigned int msmsdcc_fmax = 50000000;
-static unsigned int msmsdcc_4bit = 1;
-static unsigned int msmsdcc_pwrsave = 1;
-static unsigned int msmsdcc_piopoll = 1;
-static unsigned int msmsdcc_sdioirq;
-
-#define PIO_SPINMAX 30
-#define CMD_SPINMAX 20
-
-
-static inline void
-msmsdcc_disable_clocks(struct msmsdcc_host *host, int deferr)
-{
- WARN_ON(!host->clks_on);
-
- BUG_ON(host->curr.mrq);
-
- if (deferr) {
- mod_timer(&host->busclk_timer, jiffies + BUSCLK_TIMEOUT);
- } else {
- del_timer_sync(&host->busclk_timer);
- /* Need to check clks_on again in case the busclk
- * timer fired
- */
- if (host->clks_on) {
- clk_disable(host->clk);
- clk_disable(host->pclk);
- host->clks_on = 0;
- }
- }
-}
-
-static inline int
-msmsdcc_enable_clocks(struct msmsdcc_host *host)
-{
- int rc;
-
- del_timer_sync(&host->busclk_timer);
-
- if (!host->clks_on) {
- rc = clk_enable(host->pclk);
- if (rc)
- return rc;
- rc = clk_enable(host->clk);
- if (rc) {
- clk_disable(host->pclk);
- return rc;
- }
- udelay(1 + ((3 * USEC_PER_SEC) /
- (host->clk_rate ? host->clk_rate : msmsdcc_fmin)));
- host->clks_on = 1;
- }
- return 0;
-}
-
-static inline unsigned int
-msmsdcc_readl(struct msmsdcc_host *host, unsigned int reg)
-{
- return readl(host->base + reg);
-}
-
-static inline void
-msmsdcc_writel(struct msmsdcc_host *host, u32 data, unsigned int reg)
-{
- writel(data, host->base + reg);
- /* 3 clk delay required! */
- udelay(1 + ((3 * USEC_PER_SEC) /
- (host->clk_rate ? host->clk_rate : msmsdcc_fmin)));
-}
-
-static void
-msmsdcc_start_command(struct msmsdcc_host *host, struct mmc_command *cmd,
- u32 c);
-
-static void msmsdcc_reset_and_restore(struct msmsdcc_host *host)
-{
- u32 mci_clk = 0;
- u32 mci_mask0 = 0;
- int ret = 0;
-
- /* Save the controller state */
- mci_clk = readl(host->base + MMCICLOCK);
- mci_mask0 = readl(host->base + MMCIMASK0);
-
- /* Reset the controller */
- ret = clk_reset(host->clk, CLK_RESET_ASSERT);
- if (ret)
- pr_err("%s: Clock assert failed at %u Hz with err %d\n",
- mmc_hostname(host->mmc), host->clk_rate, ret);
-
- ret = clk_reset(host->clk, CLK_RESET_DEASSERT);
- if (ret)
- pr_err("%s: Clock deassert failed at %u Hz with err %d\n",
- mmc_hostname(host->mmc), host->clk_rate, ret);
-
- pr_info("%s: Controller has been re-initialiazed\n",
- mmc_hostname(host->mmc));
-
- /* Restore the contoller state */
- writel(host->pwr, host->base + MMCIPOWER);
- writel(mci_clk, host->base + MMCICLOCK);
- writel(mci_mask0, host->base + MMCIMASK0);
- ret = clk_set_rate(host->clk, host->clk_rate);
- if (ret)
- pr_err("%s: Failed to set clk rate %u Hz (%d)\n",
- mmc_hostname(host->mmc), host->clk_rate, ret);
-}
-
-static void
-msmsdcc_request_end(struct msmsdcc_host *host, struct mmc_request *mrq)
-{
- BUG_ON(host->curr.data);
-
- host->curr.mrq = NULL;
- host->curr.cmd = NULL;
-
- if (mrq->data)
- mrq->data->bytes_xfered = host->curr.data_xfered;
- if (mrq->cmd->error == -ETIMEDOUT)
- mdelay(5);
-
-#if BUSCLK_PWRSAVE
- msmsdcc_disable_clocks(host, 1);
-#endif
- /*
- * Need to drop the host lock here; mmc_request_done may call
- * back into the driver...
- */
- spin_unlock(&host->lock);
- mmc_request_done(host->mmc, mrq);
- spin_lock(&host->lock);
-}
-
-static void
-msmsdcc_stop_data(struct msmsdcc_host *host)
-{
- host->curr.data = NULL;
- host->curr.got_dataend = 0;
-}
-
-uint32_t msmsdcc_fifo_addr(struct msmsdcc_host *host)
-{
- return host->memres->start + MMCIFIFO;
-}
-
-static inline void
-msmsdcc_start_command_exec(struct msmsdcc_host *host, u32 arg, u32 c) {
- msmsdcc_writel(host, arg, MMCIARGUMENT);
- msmsdcc_writel(host, c, MMCICOMMAND);
-}
-
-static void
-msmsdcc_dma_exec_func(struct msm_dmov_cmd *cmd)
-{
- struct msmsdcc_host *host = (struct msmsdcc_host *)cmd->data;
-
- msmsdcc_writel(host, host->cmd_timeout, MMCIDATATIMER);
- msmsdcc_writel(host, (unsigned int)host->curr.xfer_size,
- MMCIDATALENGTH);
- msmsdcc_writel(host, (msmsdcc_readl(host, MMCIMASK0) &
- (~MCI_IRQ_PIO)) | host->cmd_pio_irqmask, MMCIMASK0);
- msmsdcc_writel(host, host->cmd_datactrl, MMCIDATACTRL);
-
- if (host->cmd_cmd) {
- msmsdcc_start_command_exec(host,
- (u32) host->cmd_cmd->arg,
- (u32) host->cmd_c);
- }
- host->dma.active = 1;
-}
-
-static void
-msmsdcc_dma_complete_tlet(unsigned long data)
-{
- struct msmsdcc_host *host = (struct msmsdcc_host *)data;
- unsigned long flags;
- struct mmc_request *mrq;
- struct msm_dmov_errdata err;
-
- spin_lock_irqsave(&host->lock, flags);
- host->dma.active = 0;
-
- err = host->dma.err;
- mrq = host->curr.mrq;
- BUG_ON(!mrq);
- WARN_ON(!mrq->data);
-
- if (!(host->dma.result & DMOV_RSLT_VALID)) {
- pr_err("msmsdcc: Invalid DataMover result\n");
- goto out;
- }
-
- if (host->dma.result & DMOV_RSLT_DONE) {
- host->curr.data_xfered = host->curr.xfer_size;
- } else {
- /* Error or flush */
- if (host->dma.result & DMOV_RSLT_ERROR)
- pr_err("%s: DMA error (0x%.8x)\n",
- mmc_hostname(host->mmc), host->dma.result);
- if (host->dma.result & DMOV_RSLT_FLUSH)
- pr_err("%s: DMA channel flushed (0x%.8x)\n",
- mmc_hostname(host->mmc), host->dma.result);
-
- pr_err("Flush data: %.8x %.8x %.8x %.8x %.8x %.8x\n",
- err.flush[0], err.flush[1], err.flush[2],
- err.flush[3], err.flush[4], err.flush[5]);
-
- msmsdcc_reset_and_restore(host);
- if (!mrq->data->error)
- mrq->data->error = -EIO;
- }
- dma_unmap_sg(mmc_dev(host->mmc), host->dma.sg, host->dma.num_ents,
- host->dma.dir);
-
- host->dma.sg = NULL;
- host->dma.busy = 0;
-
- if (host->curr.got_dataend || mrq->data->error) {
-
- /*
- * If we've already gotten our DATAEND / DATABLKEND
- * for this request, then complete it through here.
- */
- msmsdcc_stop_data(host);
-
- if (!mrq->data->error)
- host->curr.data_xfered = host->curr.xfer_size;
- if (!mrq->data->stop || mrq->cmd->error) {
- host->curr.mrq = NULL;
- host->curr.cmd = NULL;
- mrq->data->bytes_xfered = host->curr.data_xfered;
-
- spin_unlock_irqrestore(&host->lock, flags);
-#if BUSCLK_PWRSAVE
- msmsdcc_disable_clocks(host, 1);
-#endif
- mmc_request_done(host->mmc, mrq);
- return;
- } else
- msmsdcc_start_command(host, mrq->data->stop, 0);
- }
-
-out:
- spin_unlock_irqrestore(&host->lock, flags);
- return;
-}
-
-static void
-msmsdcc_dma_complete_func(struct msm_dmov_cmd *cmd,
- unsigned int result,
- struct msm_dmov_errdata *err)
-{
- struct msmsdcc_dma_data *dma_data =
- container_of(cmd, struct msmsdcc_dma_data, hdr);
- struct msmsdcc_host *host = dma_data->host;
-
- dma_data->result = result;
- if (err)
- memcpy(&dma_data->err, err, sizeof(struct msm_dmov_errdata));
-
- tasklet_schedule(&host->dma_tlet);
-}
-
-static int validate_dma(struct msmsdcc_host *host, struct mmc_data *data)
-{
- if (host->dma.channel == -1)
- return -ENOENT;
-
- if ((data->blksz * data->blocks) < MCI_FIFOSIZE)
- return -EINVAL;
- if ((data->blksz * data->blocks) % MCI_FIFOSIZE)
- return -EINVAL;
- return 0;
-}
-
-static int msmsdcc_config_dma(struct msmsdcc_host *host, struct mmc_data *data)
-{
- struct msmsdcc_nc_dmadata *nc;
- dmov_box *box;
- uint32_t rows;
- uint32_t crci;
- unsigned int n;
- int i, rc;
- struct scatterlist *sg = data->sg;
-
- rc = validate_dma(host, data);
- if (rc)
- return rc;
-
- host->dma.sg = data->sg;
- host->dma.num_ents = data->sg_len;
-
- BUG_ON(host->dma.num_ents > NR_SG); /* Prevent memory corruption */
-
- nc = host->dma.nc;
-
- switch (host->pdev_id) {
- case 1:
- crci = MSMSDCC_CRCI_SDC1;
- break;
- case 2:
- crci = MSMSDCC_CRCI_SDC2;
- break;
- case 3:
- crci = MSMSDCC_CRCI_SDC3;
- break;
- case 4:
- crci = MSMSDCC_CRCI_SDC4;
- break;
- default:
- host->dma.sg = NULL;
- host->dma.num_ents = 0;
- return -ENOENT;
- }
-
- if (data->flags & MMC_DATA_READ)
- host->dma.dir = DMA_FROM_DEVICE;
- else
- host->dma.dir = DMA_TO_DEVICE;
-
- host->curr.user_pages = 0;
-
- box = &nc->cmd[0];
-
- /* location of command block must be 64 bit aligned */
- BUG_ON(host->dma.cmd_busaddr & 0x07);
-
- nc->cmdptr = (host->dma.cmd_busaddr >> 3) | CMD_PTR_LP;
- host->dma.hdr.cmdptr = DMOV_CMD_PTR_LIST |
- DMOV_CMD_ADDR(host->dma.cmdptr_busaddr);
- host->dma.hdr.complete_func = msmsdcc_dma_complete_func;
-
- n = dma_map_sg(mmc_dev(host->mmc), host->dma.sg,
- host->dma.num_ents, host->dma.dir);
- if (n == 0) {
- pr_err("%s: Unable to map in all sg elements\n",
- mmc_hostname(host->mmc));
- host->dma.sg = NULL;
- host->dma.num_ents = 0;
- return -ENOMEM;
- }
-
- for_each_sg(host->dma.sg, sg, n, i) {
-
- box->cmd = CMD_MODE_BOX;
-
- if (i == n - 1)
- box->cmd |= CMD_LC;
- rows = (sg_dma_len(sg) % MCI_FIFOSIZE) ?
- (sg_dma_len(sg) / MCI_FIFOSIZE) + 1 :
- (sg_dma_len(sg) / MCI_FIFOSIZE) ;
-
- if (data->flags & MMC_DATA_READ) {
- box->src_row_addr = msmsdcc_fifo_addr(host);
- box->dst_row_addr = sg_dma_address(sg);
-
- box->src_dst_len = (MCI_FIFOSIZE << 16) |
- (MCI_FIFOSIZE);
- box->row_offset = MCI_FIFOSIZE;
-
- box->num_rows = rows * ((1 << 16) + 1);
- box->cmd |= CMD_SRC_CRCI(crci);
- } else {
- box->src_row_addr = sg_dma_address(sg);
- box->dst_row_addr = msmsdcc_fifo_addr(host);
-
- box->src_dst_len = (MCI_FIFOSIZE << 16) |
- (MCI_FIFOSIZE);
- box->row_offset = (MCI_FIFOSIZE << 16);
-
- box->num_rows = rows * ((1 << 16) + 1);
- box->cmd |= CMD_DST_CRCI(crci);
- }
- box++;
- }
-
- return 0;
-}
-
-static int
-snoop_cccr_abort(struct mmc_command *cmd)
-{
- if ((cmd->opcode == 52) &&
- (cmd->arg & 0x80000000) &&
- (((cmd->arg >> 9) & 0x1ffff) == SDIO_CCCR_ABORT))
- return 1;
- return 0;
-}
-
-static void
-msmsdcc_start_command_deferred(struct msmsdcc_host *host,
- struct mmc_command *cmd, u32 *c)
-{
- *c |= (cmd->opcode | MCI_CPSM_ENABLE);
-
- if (cmd->flags & MMC_RSP_PRESENT) {
- if (cmd->flags & MMC_RSP_136)
- *c |= MCI_CPSM_LONGRSP;
- *c |= MCI_CPSM_RESPONSE;
- }
-
- if (/*interrupt*/0)
- *c |= MCI_CPSM_INTERRUPT;
-
- if ((((cmd->opcode == 17) || (cmd->opcode == 18)) ||
- ((cmd->opcode == 24) || (cmd->opcode == 25))) ||
- (cmd->opcode == 53))
- *c |= MCI_CSPM_DATCMD;
-
- if (host->prog_scan && (cmd->opcode == 12)) {
- *c |= MCI_CPSM_PROGENA;
- host->prog_enable = true;
- }
-
- if (cmd == cmd->mrq->stop)
- *c |= MCI_CSPM_MCIABORT;
-
- if (snoop_cccr_abort(cmd))
- *c |= MCI_CSPM_MCIABORT;
-
- if (host->curr.cmd != NULL) {
- pr_err("%s: Overlapping command requests\n",
- mmc_hostname(host->mmc));
- }
- host->curr.cmd = cmd;
-}
-
-static void
-msmsdcc_start_data(struct msmsdcc_host *host, struct mmc_data *data,
- struct mmc_command *cmd, u32 c)
-{
- unsigned int datactrl, timeout;
- unsigned long long clks;
- unsigned int pio_irqmask = 0;
-
- host->curr.data = data;
- host->curr.xfer_size = data->blksz * data->blocks;
- host->curr.xfer_remain = host->curr.xfer_size;
- host->curr.data_xfered = 0;
- host->curr.got_dataend = 0;
-
- memset(&host->pio, 0, sizeof(host->pio));
-
- datactrl = MCI_DPSM_ENABLE | (data->blksz << 4);
-
- if (!msmsdcc_config_dma(host, data))
- datactrl |= MCI_DPSM_DMAENABLE;
- else {
- host->pio.sg = data->sg;
- host->pio.sg_len = data->sg_len;
- host->pio.sg_off = 0;
-
- if (data->flags & MMC_DATA_READ) {
- pio_irqmask = MCI_RXFIFOHALFFULLMASK;
- if (host->curr.xfer_remain < MCI_FIFOSIZE)
- pio_irqmask |= MCI_RXDATAAVLBLMASK;
- } else
- pio_irqmask = MCI_TXFIFOHALFEMPTYMASK;
- }
-
- if (data->flags & MMC_DATA_READ)
- datactrl |= MCI_DPSM_DIRECTION;
-
- clks = (unsigned long long)data->timeout_ns * host->clk_rate;
- do_div(clks, NSEC_PER_SEC);
- timeout = data->timeout_clks + (unsigned int)clks*2 ;
-
- if (datactrl & MCI_DPSM_DMAENABLE) {
- /* Save parameters for the exec function */
- host->cmd_timeout = timeout;
- host->cmd_pio_irqmask = pio_irqmask;
- host->cmd_datactrl = datactrl;
- host->cmd_cmd = cmd;
-
- host->dma.hdr.execute_func = msmsdcc_dma_exec_func;
- host->dma.hdr.data = (void *)host;
- host->dma.busy = 1;
-
- if (cmd) {
- msmsdcc_start_command_deferred(host, cmd, &c);
- host->cmd_c = c;
- }
- msm_dmov_enqueue_cmd(host->dma.channel, &host->dma.hdr);
- if (data->flags & MMC_DATA_WRITE)
- host->prog_scan = true;
- } else {
- msmsdcc_writel(host, timeout, MMCIDATATIMER);
-
- msmsdcc_writel(host, host->curr.xfer_size, MMCIDATALENGTH);
-
- msmsdcc_writel(host, (msmsdcc_readl(host, MMCIMASK0) &
- (~MCI_IRQ_PIO)) | pio_irqmask, MMCIMASK0);
-
- msmsdcc_writel(host, datactrl, MMCIDATACTRL);
-
- if (cmd) {
- /* Daisy-chain the command if requested */
- msmsdcc_start_command(host, cmd, c);
- }
- }
-}
-
-static void
-msmsdcc_start_command(struct msmsdcc_host *host, struct mmc_command *cmd, u32 c)
-{
- if (cmd == cmd->mrq->stop)
- c |= MCI_CSPM_MCIABORT;
-
- host->stats.cmds++;
-
- msmsdcc_start_command_deferred(host, cmd, &c);
- msmsdcc_start_command_exec(host, cmd->arg, c);
-}
-
-static void
-msmsdcc_data_err(struct msmsdcc_host *host, struct mmc_data *data,
- unsigned int status)
-{
- if (status & MCI_DATACRCFAIL) {
- pr_err("%s: Data CRC error\n", mmc_hostname(host->mmc));
- pr_err("%s: opcode 0x%.8x\n", __func__,
- data->mrq->cmd->opcode);
- pr_err("%s: blksz %d, blocks %d\n", __func__,
- data->blksz, data->blocks);
- data->error = -EILSEQ;
- } else if (status & MCI_DATATIMEOUT) {
- pr_err("%s: Data timeout\n", mmc_hostname(host->mmc));
- data->error = -ETIMEDOUT;
- } else if (status & MCI_RXOVERRUN) {
- pr_err("%s: RX overrun\n", mmc_hostname(host->mmc));
- data->error = -EIO;
- } else if (status & MCI_TXUNDERRUN) {
- pr_err("%s: TX underrun\n", mmc_hostname(host->mmc));
- data->error = -EIO;
- } else {
- pr_err("%s: Unknown error (0x%.8x)\n",
- mmc_hostname(host->mmc), status);
- data->error = -EIO;
- }
-}
-
-
-static int
-msmsdcc_pio_read(struct msmsdcc_host *host, char *buffer, unsigned int remain)
-{
- uint32_t *ptr = (uint32_t *) buffer;
- int count = 0;
-
- if (remain % 4)
- remain = ((remain >> 2) + 1) << 2;
-
- while (msmsdcc_readl(host, MMCISTATUS) & MCI_RXDATAAVLBL) {
- *ptr = msmsdcc_readl(host, MMCIFIFO + (count % MCI_FIFOSIZE));
- ptr++;
- count += sizeof(uint32_t);
-
- remain -= sizeof(uint32_t);
- if (remain == 0)
- break;
- }
- return count;
-}
-
-static int
-msmsdcc_pio_write(struct msmsdcc_host *host, char *buffer,
- unsigned int remain, u32 status)
-{
- void __iomem *base = host->base;
- char *ptr = buffer;
-
- do {
- unsigned int count, maxcnt, sz;
-
- maxcnt = status & MCI_TXFIFOEMPTY ? MCI_FIFOSIZE :
- MCI_FIFOHALFSIZE;
- count = min(remain, maxcnt);
-
- sz = count % 4 ? (count >> 2) + 1 : (count >> 2);
- writesl(base + MMCIFIFO, ptr, sz);
- ptr += count;
- remain -= count;
-
- if (remain == 0)
- break;
-
- status = msmsdcc_readl(host, MMCISTATUS);
- } while (status & MCI_TXFIFOHALFEMPTY);
-
- return ptr - buffer;
-}
-
-static int
-msmsdcc_spin_on_status(struct msmsdcc_host *host, uint32_t mask, int maxspin)
-{
- while (maxspin) {
- if ((msmsdcc_readl(host, MMCISTATUS) & mask))
- return 0;
- udelay(1);
- --maxspin;
- }
- return -ETIMEDOUT;
-}
-
-static irqreturn_t
-msmsdcc_pio_irq(int irq, void *dev_id)
-{
- struct msmsdcc_host *host = dev_id;
- uint32_t status;
- u32 mci_mask0;
-
- status = msmsdcc_readl(host, MMCISTATUS);
- mci_mask0 = msmsdcc_readl(host, MMCIMASK0);
-
- if (((mci_mask0 & status) & MCI_IRQ_PIO) == 0)
- return IRQ_NONE;
-
- do {
- unsigned long flags;
- unsigned int remain, len;
- char *buffer;
-
- if (!(status & (MCI_TXFIFOHALFEMPTY | MCI_RXDATAAVLBL))) {
- if (host->curr.xfer_remain == 0 || !msmsdcc_piopoll)
- break;
-
- if (msmsdcc_spin_on_status(host,
- (MCI_TXFIFOHALFEMPTY |
- MCI_RXDATAAVLBL),
- PIO_SPINMAX)) {
- break;
- }
- }
-
- /* Map the current scatter buffer */
- local_irq_save(flags);
- buffer = kmap_atomic(sg_page(host->pio.sg))
- + host->pio.sg->offset;
- buffer += host->pio.sg_off;
- remain = host->pio.sg->length - host->pio.sg_off;
- len = 0;
- if (status & MCI_RXACTIVE)
- len = msmsdcc_pio_read(host, buffer, remain);
- if (status & MCI_TXACTIVE)
- len = msmsdcc_pio_write(host, buffer, remain, status);
-
- /* Unmap the buffer */
- kunmap_atomic(buffer);
- local_irq_restore(flags);
-
- host->pio.sg_off += len;
- host->curr.xfer_remain -= len;
- host->curr.data_xfered += len;
- remain -= len;
-
- if (remain == 0) {
- /* This sg page is full - do some housekeeping */
- if (status & MCI_RXACTIVE && host->curr.user_pages)
- flush_dcache_page(sg_page(host->pio.sg));
-
- if (!--host->pio.sg_len) {
- memset(&host->pio, 0, sizeof(host->pio));
- break;
- }
-
- /* Advance to next sg */
- host->pio.sg++;
- host->pio.sg_off = 0;
- }
-
- status = msmsdcc_readl(host, MMCISTATUS);
- } while (1);
-
- if (status & MCI_RXACTIVE && host->curr.xfer_remain < MCI_FIFOSIZE)
- msmsdcc_writel(host, (mci_mask0 & (~MCI_IRQ_PIO)) |
- MCI_RXDATAAVLBLMASK, MMCIMASK0);
-
- if (!host->curr.xfer_remain)
- msmsdcc_writel(host, (mci_mask0 & (~MCI_IRQ_PIO)) | 0,
- MMCIMASK0);
-
- return IRQ_HANDLED;
-}
-
-static void msmsdcc_do_cmdirq(struct msmsdcc_host *host, uint32_t status)
-{
- struct mmc_command *cmd = host->curr.cmd;
-
- host->curr.cmd = NULL;
- cmd->resp[0] = msmsdcc_readl(host, MMCIRESPONSE0);
- cmd->resp[1] = msmsdcc_readl(host, MMCIRESPONSE1);
- cmd->resp[2] = msmsdcc_readl(host, MMCIRESPONSE2);
- cmd->resp[3] = msmsdcc_readl(host, MMCIRESPONSE3);
-
- if (status & MCI_CMDTIMEOUT) {
- cmd->error = -ETIMEDOUT;
- } else if (status & MCI_CMDCRCFAIL &&
- cmd->flags & MMC_RSP_CRC) {
- pr_err("%s: Command CRC error\n", mmc_hostname(host->mmc));
- cmd->error = -EILSEQ;
- }
-
- if (!cmd->data || cmd->error) {
- if (host->curr.data && host->dma.sg)
- msm_dmov_stop_cmd(host->dma.channel,
- &host->dma.hdr, 0);
- else if (host->curr.data) { /* Non DMA */
- msmsdcc_reset_and_restore(host);
- msmsdcc_stop_data(host);
- msmsdcc_request_end(host, cmd->mrq);
- } else { /* host->data == NULL */
- if (!cmd->error && host->prog_enable) {
- if (status & MCI_PROGDONE) {
- host->prog_scan = false;
- host->prog_enable = false;
- msmsdcc_request_end(host, cmd->mrq);
- } else {
- host->curr.cmd = cmd;
- }
- } else {
- if (host->prog_enable) {
- host->prog_scan = false;
- host->prog_enable = false;
- }
- msmsdcc_request_end(host, cmd->mrq);
- }
- }
- } else if (cmd->data)
- if (!(cmd->data->flags & MMC_DATA_READ))
- msmsdcc_start_data(host, cmd->data,
- NULL, 0);
-}
-
-static void
-msmsdcc_handle_irq_data(struct msmsdcc_host *host, u32 status,
- void __iomem *base)
-{
- struct mmc_data *data = host->curr.data;
-
- if (status & (MCI_CMDSENT | MCI_CMDRESPEND | MCI_CMDCRCFAIL |
- MCI_CMDTIMEOUT | MCI_PROGDONE) && host->curr.cmd) {
- msmsdcc_do_cmdirq(host, status);
- }
-
- if (!data)
- return;
-
- /* Check for data errors */
- if (status & (MCI_DATACRCFAIL | MCI_DATATIMEOUT |
- MCI_TXUNDERRUN | MCI_RXOVERRUN)) {
- msmsdcc_data_err(host, data, status);
- host->curr.data_xfered = 0;
- if (host->dma.sg)
- msm_dmov_stop_cmd(host->dma.channel,
- &host->dma.hdr, 0);
- else {
- msmsdcc_reset_and_restore(host);
- if (host->curr.data)
- msmsdcc_stop_data(host);
- if (!data->stop)
- msmsdcc_request_end(host, data->mrq);
- else
- msmsdcc_start_command(host, data->stop, 0);
- }
- }
-
- /* Check for data done */
- if (!host->curr.got_dataend && (status & MCI_DATAEND))
- host->curr.got_dataend = 1;
-
- /*
- * If DMA is still in progress, we complete via the completion handler
- */
- if (host->curr.got_dataend && !host->dma.busy) {
- /*
- * There appears to be an issue in the controller where
- * if you request a small block transfer (< fifo size),
- * you may get your DATAEND/DATABLKEND irq without the
- * PIO data irq.
- *
- * Check to see if there is still data to be read,
- * and simulate a PIO irq.
- */
- if (readl(base + MMCISTATUS) & MCI_RXDATAAVLBL)
- msmsdcc_pio_irq(1, host);
-
- msmsdcc_stop_data(host);
- if (!data->error)
- host->curr.data_xfered = host->curr.xfer_size;
-
- if (!data->stop)
- msmsdcc_request_end(host, data->mrq);
- else
- msmsdcc_start_command(host, data->stop, 0);
- }
-}
-
-static irqreturn_t
-msmsdcc_irq(int irq, void *dev_id)
-{
- struct msmsdcc_host *host = dev_id;
- void __iomem *base = host->base;
- u32 status;
- int ret = 0;
- int cardint = 0;
-
- spin_lock(&host->lock);
-
- do {
- status = msmsdcc_readl(host, MMCISTATUS);
- status &= msmsdcc_readl(host, MMCIMASK0);
- if ((status & (~MCI_IRQ_PIO)) == 0)
- break;
- msmsdcc_writel(host, status, MMCICLEAR);
-
- if (status & MCI_SDIOINTR)
- status &= ~MCI_SDIOINTR;
-
- if (!status)
- break;
-
- msmsdcc_handle_irq_data(host, status, base);
-
- if (status & MCI_SDIOINTOPER) {
- cardint = 1;
- status &= ~MCI_SDIOINTOPER;
- }
- ret = 1;
- } while (status);
-
- spin_unlock(&host->lock);
-
- /*
- * We have to delay handling the card interrupt as it calls
- * back into the driver.
- */
- if (cardint)
- mmc_signal_sdio_irq(host->mmc);
-
- return IRQ_RETVAL(ret);
-}
-
-static void
-msmsdcc_request(struct mmc_host *mmc, struct mmc_request *mrq)
-{
- struct msmsdcc_host *host = mmc_priv(mmc);
- unsigned long flags;
-
- WARN_ON(host->curr.mrq != NULL);
- WARN_ON(host->pwr == 0);
-
- spin_lock_irqsave(&host->lock, flags);
-
- host->stats.reqs++;
-
- if (host->eject) {
- if (mrq->data && !(mrq->data->flags & MMC_DATA_READ)) {
- mrq->cmd->error = 0;
- mrq->data->bytes_xfered = mrq->data->blksz *
- mrq->data->blocks;
- } else
- mrq->cmd->error = -ENOMEDIUM;
-
- spin_unlock_irqrestore(&host->lock, flags);
- mmc_request_done(mmc, mrq);
- return;
- }
-
- msmsdcc_enable_clocks(host);
-
- host->curr.mrq = mrq;
-
- if (mrq->data && mrq->data->flags & MMC_DATA_READ)
- /* Queue/read data, daisy-chain command when data starts */
- msmsdcc_start_data(host, mrq->data, mrq->cmd, 0);
- else
- msmsdcc_start_command(host, mrq->cmd, 0);
-
- if (host->cmdpoll && !msmsdcc_spin_on_status(host,
- MCI_CMDRESPEND|MCI_CMDCRCFAIL|MCI_CMDTIMEOUT,
- CMD_SPINMAX)) {
- uint32_t status = msmsdcc_readl(host, MMCISTATUS);
- msmsdcc_do_cmdirq(host, status);
- msmsdcc_writel(host,
- MCI_CMDRESPEND | MCI_CMDCRCFAIL | MCI_CMDTIMEOUT,
- MMCICLEAR);
- host->stats.cmdpoll_hits++;
- } else {
- host->stats.cmdpoll_misses++;
- }
- spin_unlock_irqrestore(&host->lock, flags);
-}
-
-static void msmsdcc_setup_gpio(struct msmsdcc_host *host, bool enable)
-{
- struct msm_mmc_gpio_data *curr;
- int i, rc = 0;
-
- if (!host->plat->gpio_data || host->gpio_config_status == enable)
- return;
-
- curr = host->plat->gpio_data;
- for (i = 0; i < curr->size; i++) {
- if (enable) {
- rc = gpio_request(curr->gpio[i].no,
- curr->gpio[i].name);
- if (rc) {
- pr_err("%s: gpio_request(%d, %s) failed %d\n",
- mmc_hostname(host->mmc),
- curr->gpio[i].no,
- curr->gpio[i].name, rc);
- goto free_gpios;
- }
- } else {
- gpio_free(curr->gpio[i].no);
- }
- }
- host->gpio_config_status = enable;
- return;
-
-free_gpios:
- for (; i >= 0; i--)
- gpio_free(curr->gpio[i].no);
-}
-
-static void
-msmsdcc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
-{
- struct msmsdcc_host *host = mmc_priv(mmc);
- u32 clk = 0, pwr = 0;
- int rc;
- unsigned long flags;
-
- spin_lock_irqsave(&host->lock, flags);
-
- msmsdcc_enable_clocks(host);
-
- spin_unlock_irqrestore(&host->lock, flags);
-
- if (ios->clock) {
- if (ios->clock != host->clk_rate) {
- rc = clk_set_rate(host->clk, ios->clock);
- if (rc < 0)
- pr_err("%s: Error setting clock rate (%d)\n",
- mmc_hostname(host->mmc), rc);
- else
- host->clk_rate = ios->clock;
- }
- clk |= MCI_CLK_ENABLE;
- }
-
- if (ios->bus_width == MMC_BUS_WIDTH_4)
- clk |= (2 << 10); /* Set WIDEBUS */
-
- if (ios->clock > 400000 && msmsdcc_pwrsave)
- clk |= (1 << 9); /* PWRSAVE */
-
- clk |= (1 << 12); /* FLOW_ENA */
- clk |= (1 << 15); /* feedback clock */
-
- if (host->plat->translate_vdd)
- pwr |= host->plat->translate_vdd(mmc_dev(mmc), ios->vdd);
-
- switch (ios->power_mode) {
- case MMC_POWER_OFF:
- msmsdcc_setup_gpio(host, false);
- break;
- case MMC_POWER_UP:
- pwr |= MCI_PWR_UP;
- msmsdcc_setup_gpio(host, true);
- break;
- case MMC_POWER_ON:
- pwr |= MCI_PWR_ON;
- break;
- }
-
- if (ios->bus_mode == MMC_BUSMODE_OPENDRAIN)
- pwr |= MCI_OD;
-
- msmsdcc_writel(host, clk, MMCICLOCK);
-
- if (host->pwr != pwr) {
- host->pwr = pwr;
- msmsdcc_writel(host, pwr, MMCIPOWER);
- }
-#if BUSCLK_PWRSAVE
- spin_lock_irqsave(&host->lock, flags);
- msmsdcc_disable_clocks(host, 1);
- spin_unlock_irqrestore(&host->lock, flags);
-#endif
-}
-
-static void msmsdcc_enable_sdio_irq(struct mmc_host *mmc, int enable)
-{
- struct msmsdcc_host *host = mmc_priv(mmc);
- unsigned long flags;
- u32 status;
-
- spin_lock_irqsave(&host->lock, flags);
- if (msmsdcc_sdioirq == 1) {
- status = msmsdcc_readl(host, MMCIMASK0);
- if (enable)
- status |= MCI_SDIOINTOPERMASK;
- else
- status &= ~MCI_SDIOINTOPERMASK;
- host->saved_irq0mask = status;
- msmsdcc_writel(host, status, MMCIMASK0);
- }
- spin_unlock_irqrestore(&host->lock, flags);
-}
-
-static void msmsdcc_init_card(struct mmc_host *mmc, struct mmc_card *card)
-{
- struct msmsdcc_host *host = mmc_priv(mmc);
-
- if (host->plat->init_card)
- host->plat->init_card(card);
-}
-
-static const struct mmc_host_ops msmsdcc_ops = {
- .request = msmsdcc_request,
- .set_ios = msmsdcc_set_ios,
- .enable_sdio_irq = msmsdcc_enable_sdio_irq,
- .init_card = msmsdcc_init_card,
-};
-
-static void
-msmsdcc_check_status(unsigned long data)
-{
- struct msmsdcc_host *host = (struct msmsdcc_host *)data;
- unsigned int status;
-
- if (!host->plat->status) {
- mmc_detect_change(host->mmc, 0);
- goto out;
- }
-
- status = host->plat->status(mmc_dev(host->mmc));
- host->eject = !status;
- if (status ^ host->oldstat) {
- pr_info("%s: Slot status change detected (%d -> %d)\n",
- mmc_hostname(host->mmc), host->oldstat, status);
- if (status)
- mmc_detect_change(host->mmc, (5 * HZ) / 2);
- else
- mmc_detect_change(host->mmc, 0);
- }
-
- host->oldstat = status;
-
-out:
- if (host->timer.function)
- mod_timer(&host->timer, jiffies + HZ);
-}
-
-static irqreturn_t
-msmsdcc_platform_status_irq(int irq, void *dev_id)
-{
- struct msmsdcc_host *host = dev_id;
-
- pr_debug("%s: %d\n", __func__, irq);
- msmsdcc_check_status((unsigned long) host);
- return IRQ_HANDLED;
-}
-
-static void
-msmsdcc_status_notify_cb(int card_present, void *dev_id)
-{
- struct msmsdcc_host *host = dev_id;
-
- pr_debug("%s: card_present %d\n", mmc_hostname(host->mmc),
- card_present);
- msmsdcc_check_status((unsigned long) host);
-}
-
-static void
-msmsdcc_busclk_expired(unsigned long _data)
-{
- struct msmsdcc_host *host = (struct msmsdcc_host *) _data;
-
- if (host->clks_on)
- msmsdcc_disable_clocks(host, 0);
-}
-
-static int
-msmsdcc_init_dma(struct msmsdcc_host *host)
-{
- memset(&host->dma, 0, sizeof(struct msmsdcc_dma_data));
- host->dma.host = host;
- host->dma.channel = -1;
-
- if (!host->dmares)
- return -ENODEV;
-
- host->dma.nc = dma_alloc_coherent(NULL,
- sizeof(struct msmsdcc_nc_dmadata),
- &host->dma.nc_busaddr,
- GFP_KERNEL);
- if (host->dma.nc == NULL) {
- pr_err("Unable to allocate DMA buffer\n");
- return -ENOMEM;
- }
- memset(host->dma.nc, 0x00, sizeof(struct msmsdcc_nc_dmadata));
- host->dma.cmd_busaddr = host->dma.nc_busaddr;
- host->dma.cmdptr_busaddr = host->dma.nc_busaddr +
- offsetof(struct msmsdcc_nc_dmadata, cmdptr);
- host->dma.channel = host->dmares->start;
-
- return 0;
-}
-
-static int
-msmsdcc_probe(struct platform_device *pdev)
-{
- struct msm_mmc_platform_data *plat = pdev->dev.platform_data;
- struct msmsdcc_host *host;
- struct mmc_host *mmc;
- struct resource *cmd_irqres = NULL;
- struct resource *stat_irqres = NULL;
- struct resource *memres = NULL;
- struct resource *dmares = NULL;
- int ret;
-
- /* must have platform data */
- if (!plat) {
- pr_err("%s: Platform data not available\n", __func__);
- ret = -EINVAL;
- goto out;
- }
-
- if (pdev->id < 1 || pdev->id > 4)
- return -EINVAL;
-
- if (pdev->resource == NULL || pdev->num_resources < 2) {
- pr_err("%s: Invalid resource\n", __func__);
- return -ENXIO;
- }
-
- memres = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- dmares = platform_get_resource(pdev, IORESOURCE_DMA, 0);
- cmd_irqres = platform_get_resource_byname(pdev, IORESOURCE_IRQ,
- "cmd_irq");
- stat_irqres = platform_get_resource_byname(pdev, IORESOURCE_IRQ,
- "status_irq");
-
- if (!cmd_irqres || !memres) {
- pr_err("%s: Invalid resource\n", __func__);
- return -ENXIO;
- }
-
- /*
- * Setup our host structure
- */
-
- mmc = mmc_alloc_host(sizeof(struct msmsdcc_host), &pdev->dev);
- if (!mmc) {
- ret = -ENOMEM;
- goto out;
- }
-
- host = mmc_priv(mmc);
- host->pdev_id = pdev->id;
- host->plat = plat;
- host->mmc = mmc;
- host->curr.cmd = NULL;
- init_timer(&host->busclk_timer);
- host->busclk_timer.data = (unsigned long) host;
- host->busclk_timer.function = msmsdcc_busclk_expired;
-
-
- host->cmdpoll = 1;
-
- host->base = ioremap(memres->start, PAGE_SIZE);
- if (!host->base) {
- ret = -ENOMEM;
- goto host_free;
- }
-
- host->cmd_irqres = cmd_irqres;
- host->memres = memres;
- host->dmares = dmares;
- spin_lock_init(&host->lock);
-
- tasklet_init(&host->dma_tlet, msmsdcc_dma_complete_tlet,
- (unsigned long)host);
-
- /*
- * Setup DMA
- */
- if (host->dmares) {
- ret = msmsdcc_init_dma(host);
- if (ret)
- goto ioremap_free;
- } else {
- host->dma.channel = -1;
- }
-
- /* Get our clocks */
- host->pclk = clk_get(&pdev->dev, "sdc_pclk");
- if (IS_ERR(host->pclk)) {
- ret = PTR_ERR(host->pclk);
- goto dma_free;
- }
-
- host->clk = clk_get(&pdev->dev, "sdc_clk");
- if (IS_ERR(host->clk)) {
- ret = PTR_ERR(host->clk);
- goto pclk_put;
- }
-
- ret = clk_set_rate(host->clk, msmsdcc_fmin);
- if (ret) {
- pr_err("%s: Clock rate set failed (%d)\n", __func__, ret);
- goto clk_put;
- }
-
- ret = clk_prepare(host->pclk);
- if (ret)
- goto clk_put;
-
- ret = clk_prepare(host->clk);
- if (ret)
- goto clk_unprepare_p;
-
- /* Enable clocks */
- ret = msmsdcc_enable_clocks(host);
- if (ret)
- goto clk_unprepare;
-
- host->pclk_rate = clk_get_rate(host->pclk);
- host->clk_rate = clk_get_rate(host->clk);
-
- /*
- * Setup MMC host structure
- */
- mmc->ops = &msmsdcc_ops;
- mmc->f_min = msmsdcc_fmin;
- mmc->f_max = msmsdcc_fmax;
- mmc->ocr_avail = plat->ocr_mask;
-
- if (msmsdcc_4bit)
- mmc->caps |= MMC_CAP_4_BIT_DATA;
- if (msmsdcc_sdioirq)
- mmc->caps |= MMC_CAP_SDIO_IRQ;
- mmc->caps |= MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED;
-
- mmc->max_segs = NR_SG;
- mmc->max_blk_size = 4096; /* MCI_DATA_CTL BLOCKSIZE up to 4096 */
- mmc->max_blk_count = 65536;
-
- mmc->max_req_size = 33554432; /* MCI_DATA_LENGTH is 25 bits */
- mmc->max_seg_size = mmc->max_req_size;
-
- msmsdcc_writel(host, 0, MMCIMASK0);
- msmsdcc_writel(host, 0x5e007ff, MMCICLEAR);
-
- msmsdcc_writel(host, MCI_IRQENABLE, MMCIMASK0);
- host->saved_irq0mask = MCI_IRQENABLE;
-
- /*
- * Setup card detect change
- */
-
- memset(&host->timer, 0, sizeof(host->timer));
-
- if (stat_irqres && !(stat_irqres->flags & IORESOURCE_DISABLED)) {
- unsigned long irqflags = IRQF_SHARED |
- (stat_irqres->flags & IRQF_TRIGGER_MASK);
-
- host->stat_irq = stat_irqres->start;
- ret = request_irq(host->stat_irq,
- msmsdcc_platform_status_irq,
- irqflags,
- DRIVER_NAME " (slot)",
- host);
- if (ret) {
- pr_err("%s: Unable to get slot IRQ %d (%d)\n",
- mmc_hostname(mmc), host->stat_irq, ret);
- goto clk_disable;
- }
- } else if (plat->register_status_notify) {
- plat->register_status_notify(msmsdcc_status_notify_cb, host);
- } else if (!plat->status)
- pr_err("%s: No card detect facilities available\n",
- mmc_hostname(mmc));
- else {
- init_timer(&host->timer);
- host->timer.data = (unsigned long)host;
- host->timer.function = msmsdcc_check_status;
- host->timer.expires = jiffies + HZ;
- add_timer(&host->timer);
- }
-
- if (plat->status) {
- host->oldstat = host->plat->status(mmc_dev(host->mmc));
- host->eject = !host->oldstat;
- }
-
- ret = request_irq(cmd_irqres->start, msmsdcc_irq, IRQF_SHARED,
- DRIVER_NAME " (cmd)", host);
- if (ret)
- goto stat_irq_free;
-
- ret = request_irq(cmd_irqres->start, msmsdcc_pio_irq, IRQF_SHARED,
- DRIVER_NAME " (pio)", host);
- if (ret)
- goto cmd_irq_free;
-
- platform_set_drvdata(pdev, mmc);
- mmc_add_host(mmc);
-
- pr_info("%s: Qualcomm MSM SDCC at 0x%016llx irq %d,%d dma %d\n",
- mmc_hostname(mmc), (unsigned long long)memres->start,
- (unsigned int) cmd_irqres->start,
- (unsigned int) host->stat_irq, host->dma.channel);
- pr_info("%s: 4 bit data mode %s\n", mmc_hostname(mmc),
- (mmc->caps & MMC_CAP_4_BIT_DATA ? "enabled" : "disabled"));
- pr_info("%s: MMC clock %u -> %u Hz, PCLK %u Hz\n",
- mmc_hostname(mmc), msmsdcc_fmin, msmsdcc_fmax, host->pclk_rate);
- pr_info("%s: Slot eject status = %d\n", mmc_hostname(mmc), host->eject);
- pr_info("%s: Power save feature enable = %d\n",
- mmc_hostname(mmc), msmsdcc_pwrsave);
-
- if (host->dma.channel != -1) {
- pr_info("%s: DM non-cached buffer at %p, dma_addr 0x%.8x\n",
- mmc_hostname(mmc), host->dma.nc, host->dma.nc_busaddr);
- pr_info("%s: DM cmd busaddr 0x%.8x, cmdptr busaddr 0x%.8x\n",
- mmc_hostname(mmc), host->dma.cmd_busaddr,
- host->dma.cmdptr_busaddr);
- } else
- pr_info("%s: PIO transfer enabled\n", mmc_hostname(mmc));
- if (host->timer.function)
- pr_info("%s: Polling status mode enabled\n", mmc_hostname(mmc));
-
- return 0;
- cmd_irq_free:
- free_irq(cmd_irqres->start, host);
- stat_irq_free:
- if (host->stat_irq)
- free_irq(host->stat_irq, host);
- clk_disable:
- msmsdcc_disable_clocks(host, 0);
- clk_unprepare:
- clk_unprepare(host->clk);
- clk_unprepare_p:
- clk_unprepare(host->pclk);
- clk_put:
- clk_put(host->clk);
- pclk_put:
- clk_put(host->pclk);
-dma_free:
- if (host->dmares)
- dma_free_coherent(NULL, sizeof(struct msmsdcc_nc_dmadata),
- host->dma.nc, host->dma.nc_busaddr);
-ioremap_free:
- tasklet_kill(&host->dma_tlet);
- iounmap(host->base);
- host_free:
- mmc_free_host(mmc);
- out:
- return ret;
-}
-
-#ifdef CONFIG_PM
-static int
-msmsdcc_suspend(struct platform_device *dev, pm_message_t state)
-{
- struct mmc_host *mmc = platform_get_drvdata(dev);
-
- if (mmc) {
- struct msmsdcc_host *host = mmc_priv(mmc);
-
- if (host->stat_irq)
- disable_irq(host->stat_irq);
-
- msmsdcc_writel(host, 0, MMCIMASK0);
- if (host->clks_on)
- msmsdcc_disable_clocks(host, 0);
- }
- return 0;
-}
-
-static int
-msmsdcc_resume(struct platform_device *dev)
-{
- struct mmc_host *mmc = platform_get_drvdata(dev);
-
- if (mmc) {
- struct msmsdcc_host *host = mmc_priv(mmc);
-
- msmsdcc_enable_clocks(host);
-
- msmsdcc_writel(host, host->saved_irq0mask, MMCIMASK0);
-
- if (host->stat_irq)
- enable_irq(host->stat_irq);
-#if BUSCLK_PWRSAVE
- msmsdcc_disable_clocks(host, 1);
-#endif
- }
- return 0;
-}
-#else
-#define msmsdcc_suspend 0
-#define msmsdcc_resume 0
-#endif
-
-static struct platform_driver msmsdcc_driver = {
- .probe = msmsdcc_probe,
- .suspend = msmsdcc_suspend,
- .resume = msmsdcc_resume,
- .driver = {
- .name = "msm_sdcc",
- },
-};
-
-module_platform_driver(msmsdcc_driver);
-
-MODULE_DESCRIPTION("Qualcomm MSM 7X00A Multimedia Card Interface driver");
-MODULE_LICENSE("GPL");
OSDN Git Service
