Re: [PATCH 06/12] mmc: Remove msm_sdcc driver

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On 13 March 2015 at 19:09, Stephen Boyd <sboyd@xxxxxxxxxxxxxx> wrote:
> This driver is orphaned now that mach-msm has been removed.
> Delete it.
>
> Cc: Ulf Hansson <ulf.hansson@xxxxxxxxxx>
> Cc: Chris Ball <chris@xxxxxxxxxx>
> Cc: David Brown <davidb@xxxxxxxxxxxxxx>
> Cc: Bryan Huntsman <bryanh@xxxxxxxxxxxxxx>
> Cc: Daniel Walker <dwalker@xxxxxxxxxx>
> Signed-off-by: Stephen Boyd <sboyd@xxxxxxxxxxxxxx>

Acked-by: Ulf Hansson <ulf.hansson@xxxxxxxxxx>

> ---
>
> I'd appreciate an ack here from mmc maintainers so this can go with patch 1
> through arm-soc.
>
>  drivers/mmc/host/Kconfig                   |    8 -
>  drivers/mmc/host/Makefile                  |    1 -
>  drivers/mmc/host/msm_sdcc.c                | 1474 ----------------------------
>  drivers/mmc/host/msm_sdcc.h                |  256 -----
>  include/linux/platform_data/mmc-msm_sdcc.h |   27 -
>  5 files changed, 1766 deletions(-)
>  delete mode 100644 drivers/mmc/host/msm_sdcc.c
>  delete mode 100644 drivers/mmc/host/msm_sdcc.h
>  delete mode 100644 include/linux/platform_data/mmc-msm_sdcc.h
>
> diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig
> index 61ac63a3776a..37d1d80fdf04 100644
> --- a/drivers/mmc/host/Kconfig
> +++ b/drivers/mmc/host/Kconfig
> @@ -393,14 +393,6 @@ config MMC_SDHCI_MSM
>
>           If unsure, say N.
>
> -config MMC_MSM
> -       tristate "Qualcomm SDCC Controller Support"
> -       depends on MMC && (ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50)
> -       help
> -         This provides support for the SD/MMC cell found in the
> -         MSM and QSD SOCs from Qualcomm. The controller also has
> -         support for SDIO devices.
> -
>  config MMC_MXC
>         tristate "Freescale i.MX21/27/31 or MPC512x Multimedia Card support"
>         depends on ARCH_MXC || PPC_MPC512x
> diff --git a/drivers/mmc/host/Makefile b/drivers/mmc/host/Makefile
> index 6a7cfe0de332..47f9421d0281 100644
> --- a/drivers/mmc/host/Makefile
> +++ b/drivers/mmc/host/Makefile
> @@ -24,7 +24,6 @@ obj-$(CONFIG_MMC_OMAP)                += omap.o
>  obj-$(CONFIG_MMC_OMAP_HS)      += omap_hsmmc.o
>  obj-$(CONFIG_MMC_ATMELMCI)     += atmel-mci.o
>  obj-$(CONFIG_MMC_TIFM_SD)      += tifm_sd.o
> -obj-$(CONFIG_MMC_MSM)          += msm_sdcc.o
>  obj-$(CONFIG_MMC_MVSDIO)       += mvsdio.o
>  obj-$(CONFIG_MMC_DAVINCI)       += davinci_mmc.o
>  obj-$(CONFIG_MMC_GOLDFISH)     += android-goldfish.o
> diff --git a/drivers/mmc/host/msm_sdcc.c b/drivers/mmc/host/msm_sdcc.c
> deleted file mode 100644
> index 90c60fd4ff6e..000000000000
> --- a/drivers/mmc/host/msm_sdcc.c
> +++ /dev/null
> @@ -1,1474 +0,0 @@
> -/*
> - *  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@xxxxxxxxxxx)
> - *
> - */
> -
> -#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");
> diff --git a/drivers/mmc/host/msm_sdcc.h b/drivers/mmc/host/msm_sdcc.h
> deleted file mode 100644
> index 402028d16b86..000000000000
> --- a/drivers/mmc/host/msm_sdcc.h
> +++ /dev/null
> @@ -1,256 +0,0 @@
> -/*
> - *  linux/drivers/mmc/host/msmsdcc.h - QCT MSM7K SDC Controller
> - *
> - *  Copyright (C) 2008 Google, 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.h
> - */
> -
> -#ifndef _MSM_SDCC_H
> -#define _MSM_SDCC_H
> -
> -#define MSMSDCC_CRCI_SDC1      6
> -#define MSMSDCC_CRCI_SDC2      7
> -#define MSMSDCC_CRCI_SDC3      12
> -#define MSMSDCC_CRCI_SDC4      13
> -
> -#define MMCIPOWER              0x000
> -#define MCI_PWR_OFF            0x00
> -#define MCI_PWR_UP             0x02
> -#define MCI_PWR_ON             0x03
> -#define MCI_OD                 (1 << 6)
> -
> -#define MMCICLOCK              0x004
> -#define MCI_CLK_ENABLE         (1 << 8)
> -#define MCI_CLK_PWRSAVE                (1 << 9)
> -#define MCI_CLK_WIDEBUS                (1 << 10)
> -#define MCI_CLK_FLOWENA                (1 << 12)
> -#define MCI_CLK_INVERTOUT      (1 << 13)
> -#define MCI_CLK_SELECTIN       (1 << 14)
> -
> -#define MMCIARGUMENT           0x008
> -#define MMCICOMMAND            0x00c
> -#define MCI_CPSM_RESPONSE      (1 << 6)
> -#define MCI_CPSM_LONGRSP       (1 << 7)
> -#define MCI_CPSM_INTERRUPT     (1 << 8)
> -#define MCI_CPSM_PENDING       (1 << 9)
> -#define MCI_CPSM_ENABLE                (1 << 10)
> -#define MCI_CPSM_PROGENA       (1 << 11)
> -#define MCI_CSPM_DATCMD                (1 << 12)
> -#define MCI_CSPM_MCIABORT      (1 << 13)
> -#define MCI_CSPM_CCSENABLE     (1 << 14)
> -#define MCI_CSPM_CCSDISABLE    (1 << 15)
> -
> -
> -#define MMCIRESPCMD            0x010
> -#define MMCIRESPONSE0          0x014
> -#define MMCIRESPONSE1          0x018
> -#define MMCIRESPONSE2          0x01c
> -#define MMCIRESPONSE3          0x020
> -#define MMCIDATATIMER          0x024
> -#define MMCIDATALENGTH         0x028
> -
> -#define MMCIDATACTRL           0x02c
> -#define MCI_DPSM_ENABLE                (1 << 0)
> -#define MCI_DPSM_DIRECTION     (1 << 1)
> -#define MCI_DPSM_MODE          (1 << 2)
> -#define MCI_DPSM_DMAENABLE     (1 << 3)
> -
> -#define MMCIDATACNT            0x030
> -#define MMCISTATUS             0x034
> -#define MCI_CMDCRCFAIL         (1 << 0)
> -#define MCI_DATACRCFAIL                (1 << 1)
> -#define MCI_CMDTIMEOUT         (1 << 2)
> -#define MCI_DATATIMEOUT                (1 << 3)
> -#define MCI_TXUNDERRUN         (1 << 4)
> -#define MCI_RXOVERRUN          (1 << 5)
> -#define MCI_CMDRESPEND         (1 << 6)
> -#define MCI_CMDSENT            (1 << 7)
> -#define MCI_DATAEND            (1 << 8)
> -#define MCI_DATABLOCKEND       (1 << 10)
> -#define MCI_CMDACTIVE          (1 << 11)
> -#define MCI_TXACTIVE           (1 << 12)
> -#define MCI_RXACTIVE           (1 << 13)
> -#define MCI_TXFIFOHALFEMPTY    (1 << 14)
> -#define MCI_RXFIFOHALFFULL     (1 << 15)
> -#define MCI_TXFIFOFULL         (1 << 16)
> -#define MCI_RXFIFOFULL         (1 << 17)
> -#define MCI_TXFIFOEMPTY                (1 << 18)
> -#define MCI_RXFIFOEMPTY                (1 << 19)
> -#define MCI_TXDATAAVLBL                (1 << 20)
> -#define MCI_RXDATAAVLBL                (1 << 21)
> -#define MCI_SDIOINTR           (1 << 22)
> -#define MCI_PROGDONE           (1 << 23)
> -#define MCI_ATACMDCOMPL                (1 << 24)
> -#define MCI_SDIOINTOPER                (1 << 25)
> -#define MCI_CCSTIMEOUT         (1 << 26)
> -
> -#define MMCICLEAR              0x038
> -#define MCI_CMDCRCFAILCLR      (1 << 0)
> -#define MCI_DATACRCFAILCLR     (1 << 1)
> -#define MCI_CMDTIMEOUTCLR      (1 << 2)
> -#define MCI_DATATIMEOUTCLR     (1 << 3)
> -#define MCI_TXUNDERRUNCLR      (1 << 4)
> -#define MCI_RXOVERRUNCLR       (1 << 5)
> -#define MCI_CMDRESPENDCLR      (1 << 6)
> -#define MCI_CMDSENTCLR         (1 << 7)
> -#define MCI_DATAENDCLR         (1 << 8)
> -#define MCI_DATABLOCKENDCLR    (1 << 10)
> -
> -#define MMCIMASK0              0x03c
> -#define MCI_CMDCRCFAILMASK     (1 << 0)
> -#define MCI_DATACRCFAILMASK    (1 << 1)
> -#define MCI_CMDTIMEOUTMASK     (1 << 2)
> -#define MCI_DATATIMEOUTMASK    (1 << 3)
> -#define MCI_TXUNDERRUNMASK     (1 << 4)
> -#define MCI_RXOVERRUNMASK      (1 << 5)
> -#define MCI_CMDRESPENDMASK     (1 << 6)
> -#define MCI_CMDSENTMASK                (1 << 7)
> -#define MCI_DATAENDMASK                (1 << 8)
> -#define MCI_DATABLOCKENDMASK   (1 << 10)
> -#define MCI_CMDACTIVEMASK      (1 << 11)
> -#define MCI_TXACTIVEMASK       (1 << 12)
> -#define MCI_RXACTIVEMASK       (1 << 13)
> -#define MCI_TXFIFOHALFEMPTYMASK        (1 << 14)
> -#define MCI_RXFIFOHALFFULLMASK (1 << 15)
> -#define MCI_TXFIFOFULLMASK     (1 << 16)
> -#define MCI_RXFIFOFULLMASK     (1 << 17)
> -#define MCI_TXFIFOEMPTYMASK    (1 << 18)
> -#define MCI_RXFIFOEMPTYMASK    (1 << 19)
> -#define MCI_TXDATAAVLBLMASK    (1 << 20)
> -#define MCI_RXDATAAVLBLMASK    (1 << 21)
> -#define MCI_SDIOINTMASK                (1 << 22)
> -#define MCI_PROGDONEMASK       (1 << 23)
> -#define MCI_ATACMDCOMPLMASK    (1 << 24)
> -#define MCI_SDIOINTOPERMASK    (1 << 25)
> -#define MCI_CCSTIMEOUTMASK     (1 << 26)
> -
> -#define MMCIMASK1              0x040
> -#define MMCIFIFOCNT            0x044
> -#define MCICCSTIMER            0x058
> -
> -#define MMCIFIFO               0x080 /* to 0x0bc */
> -
> -#define MCI_IRQENABLE  \
> -       (MCI_CMDCRCFAILMASK|MCI_DATACRCFAILMASK|MCI_CMDTIMEOUTMASK|     \
> -       MCI_DATATIMEOUTMASK|MCI_TXUNDERRUNMASK|MCI_RXOVERRUNMASK|       \
> -       MCI_CMDRESPENDMASK|MCI_CMDSENTMASK|MCI_DATAENDMASK|MCI_PROGDONEMASK)
> -
> -#define MCI_IRQ_PIO \
> -       (MCI_RXDATAAVLBLMASK | MCI_TXDATAAVLBLMASK | MCI_RXFIFOEMPTYMASK | \
> -        MCI_TXFIFOEMPTYMASK | MCI_RXFIFOFULLMASK | MCI_TXFIFOFULLMASK | \
> -        MCI_RXFIFOHALFFULLMASK | MCI_TXFIFOHALFEMPTYMASK | \
> -        MCI_RXACTIVEMASK | MCI_TXACTIVEMASK)
> -/*
> - * The size of the FIFO in bytes.
> - */
> -#define MCI_FIFOSIZE   (16*4)
> -
> -#define MCI_FIFOHALFSIZE (MCI_FIFOSIZE / 2)
> -
> -#define NR_SG          32
> -
> -struct clk;
> -
> -struct msmsdcc_nc_dmadata {
> -       dmov_box        cmd[NR_SG];
> -       uint32_t        cmdptr;
> -};
> -
> -struct msmsdcc_dma_data {
> -       struct msmsdcc_nc_dmadata       *nc;
> -       dma_addr_t                      nc_busaddr;
> -       dma_addr_t                      cmd_busaddr;
> -       dma_addr_t                      cmdptr_busaddr;
> -
> -       struct msm_dmov_cmd             hdr;
> -       enum dma_data_direction         dir;
> -
> -       struct scatterlist              *sg;
> -       int                             num_ents;
> -
> -       int                             channel;
> -       struct msmsdcc_host             *host;
> -       int                             busy; /* Set if DM is busy */
> -       int                             active;
> -       unsigned int                    result;
> -       struct msm_dmov_errdata         err;
> -};
> -
> -struct msmsdcc_pio_data {
> -       struct scatterlist      *sg;
> -       unsigned int            sg_len;
> -       unsigned int            sg_off;
> -};
> -
> -struct msmsdcc_curr_req {
> -       struct mmc_request      *mrq;
> -       struct mmc_command      *cmd;
> -       struct mmc_data         *data;
> -       unsigned int            xfer_size;      /* Total data size */
> -       unsigned int            xfer_remain;    /* Bytes remaining to send */
> -       unsigned int            data_xfered;    /* Bytes acked by BLKEND irq */
> -       int                     got_dataend;
> -       int                     user_pages;
> -};
> -
> -struct msmsdcc_stats {
> -       unsigned int reqs;
> -       unsigned int cmds;
> -       unsigned int cmdpoll_hits;
> -       unsigned int cmdpoll_misses;
> -};
> -
> -struct msmsdcc_host {
> -       struct resource         *cmd_irqres;
> -       struct resource         *memres;
> -       struct resource         *dmares;
> -       void __iomem            *base;
> -       int                     pdev_id;
> -       unsigned int            stat_irq;
> -
> -       struct msmsdcc_curr_req curr;
> -
> -       struct mmc_host         *mmc;
> -       struct clk              *clk;           /* main MMC bus clock */
> -       struct clk              *pclk;          /* SDCC peripheral bus clock */
> -       unsigned int            clks_on;        /* set if clocks are enabled */
> -       struct timer_list       busclk_timer;
> -
> -       unsigned int            eject;          /* eject state */
> -
> -       spinlock_t              lock;
> -
> -       unsigned int            clk_rate;       /* Current clock rate */
> -       unsigned int            pclk_rate;
> -
> -       u32                     pwr;
> -       u32                     saved_irq0mask; /* MMCIMASK0 reg value */
> -       struct msm_mmc_platform_data *plat;
> -
> -       struct timer_list       timer;
> -       unsigned int            oldstat;
> -
> -       struct msmsdcc_dma_data dma;
> -       struct msmsdcc_pio_data pio;
> -       int                     cmdpoll;
> -       struct msmsdcc_stats    stats;
> -
> -       struct tasklet_struct   dma_tlet;
> -       /* Command parameters */
> -       unsigned int            cmd_timeout;
> -       unsigned int            cmd_pio_irqmask;
> -       unsigned int            cmd_datactrl;
> -       struct mmc_command      *cmd_cmd;
> -       u32                     cmd_c;
> -       bool                    gpio_config_status;
> -
> -       bool prog_scan;
> -       bool prog_enable;
> -};
> -
> -#endif
> diff --git a/include/linux/platform_data/mmc-msm_sdcc.h b/include/linux/platform_data/mmc-msm_sdcc.h
> deleted file mode 100644
> index 55aa873c9396..000000000000
> --- a/include/linux/platform_data/mmc-msm_sdcc.h
> +++ /dev/null
> @@ -1,27 +0,0 @@
> -#ifndef __MMC_MSM_SDCC_H
> -#define __MMC_MSM_SDCC_H
> -
> -#include <linux/mmc/host.h>
> -#include <linux/mmc/card.h>
> -#include <linux/mmc/sdio_func.h>
> -
> -struct msm_mmc_gpio {
> -       unsigned no;
> -       const char *name;
> -};
> -
> -struct msm_mmc_gpio_data {
> -       struct msm_mmc_gpio *gpio;
> -       u8 size;
> -};
> -
> -struct msm_mmc_platform_data {
> -       unsigned int ocr_mask;                  /* available voltages */
> -       u32 (*translate_vdd)(struct device *, unsigned int);
> -       unsigned int (*status)(struct device *);
> -       int (*register_status_notify)(void (*callback)(int card_present, void *dev_id), void *dev_id);
> -       struct msm_mmc_gpio_data *gpio_data;
> -       void (*init_card)(struct mmc_card *card);
> -};
> -
> -#endif
> --
> The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
> a Linux Foundation Collaborative Project
>
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