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mmc: dw_mmc: move mci_send_cmd forward to avoid declaration 

No functional change intended.

Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Shawn Lin 2017-02-17 10:59:44 +08:00 committed by Ulf Hansson
parent 132b3b6aa6
commit 4dba18defb
1 changed files with 40 additions and 41 deletions
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81
drivers/mmc/host/dw_mmc.c
View File

@ -230,7 +230,6 @@ static void dw_mci_init_debugfs(struct dw_mci_slot *slot)
}
#endif /* defined(CONFIG_DEBUG_FS) */
static void mci_send_cmd(struct dw_mci_slot *slot, u32 cmd, u32 arg);
static bool dw_mci_ctrl_reset(struct dw_mci *host, u32 reset)
{
u32 ctrl;
@ -252,6 +251,46 @@ static bool dw_mci_ctrl_reset(struct dw_mci *host, u32 reset)
return true;
}
static void dw_mci_wait_while_busy(struct dw_mci *host, u32 cmd_flags)
{
u32 status;
/*
* Databook says that before issuing a new data transfer command
* we need to check to see if the card is busy. Data transfer commands
* all have SDMMC_CMD_PRV_DAT_WAIT set, so we'll key off that.
*
* ...also allow sending for SDMMC_CMD_VOLT_SWITCH where busy is
* expected.
*/
if ((cmd_flags & SDMMC_CMD_PRV_DAT_WAIT) &&
!(cmd_flags & SDMMC_CMD_VOLT_SWITCH)) {
if (readl_poll_timeout_atomic(host->regs + SDMMC_STATUS,
status,
!(status & SDMMC_STATUS_BUSY),
10, 500 * USEC_PER_MSEC))
dev_err(host->dev, "Busy; trying anyway\n");
}
}
static void mci_send_cmd(struct dw_mci_slot *slot, u32 cmd, u32 arg)
{
struct dw_mci *host = slot->host;
unsigned int cmd_status = 0;
mci_writel(host, CMDARG, arg);
wmb(); /* drain writebuffer */
dw_mci_wait_while_busy(host, cmd);
mci_writel(host, CMD, SDMMC_CMD_START | cmd);
if (readl_poll_timeout_atomic(host->regs + SDMMC_CMD, cmd_status,
!(cmd_status & SDMMC_CMD_START),
1, 500 * USEC_PER_MSEC))
dev_err(&slot->mmc->class_dev,
"Timeout sending command (cmd %#x arg %#x status %#x)\n",
cmd, arg, cmd_status);
}
static u32 dw_mci_prepare_command(struct mmc_host *mmc, struct mmc_command *cmd)
{
struct dw_mci_slot *slot = mmc_priv(mmc);
@ -359,28 +398,6 @@ static u32 dw_mci_prep_stop_abort(struct dw_mci *host, struct mmc_command *cmd)
return cmdr;
}
static void dw_mci_wait_while_busy(struct dw_mci *host, u32 cmd_flags)
{
u32 status;
/*
* Databook says that before issuing a new data transfer command
* we need to check to see if the card is busy. Data transfer commands
* all have SDMMC_CMD_PRV_DAT_WAIT set, so we'll key off that.
*
* ...also allow sending for SDMMC_CMD_VOLT_SWITCH where busy is
* expected.
*/
if ((cmd_flags & SDMMC_CMD_PRV_DAT_WAIT) &&
!(cmd_flags & SDMMC_CMD_VOLT_SWITCH)) {
if (readl_poll_timeout_atomic(host->regs + SDMMC_STATUS,
status,
!(status & SDMMC_STATUS_BUSY),
10, 500 * USEC_PER_MSEC))
dev_err(host->dev, "Busy; trying anyway\n");
}
}
static void dw_mci_start_command(struct dw_mci *host,
struct mmc_command *cmd, u32 cmd_flags)
{
@ -1185,24 +1202,6 @@ static void dw_mci_submit_data(struct dw_mci *host, struct mmc_data *data)
}
}
static void mci_send_cmd(struct dw_mci_slot *slot, u32 cmd, u32 arg)
{
struct dw_mci *host = slot->host;
unsigned int cmd_status = 0;
mci_writel(host, CMDARG, arg);
wmb(); /* drain writebuffer */
dw_mci_wait_while_busy(host, cmd);
mci_writel(host, CMD, SDMMC_CMD_START | cmd);
if (readl_poll_timeout_atomic(host->regs + SDMMC_CMD, cmd_status,
!(cmd_status & SDMMC_CMD_START),
1, 500 * USEC_PER_MSEC))
dev_err(&slot->mmc->class_dev,
"Timeout sending command (cmd %#x arg %#x status %#x)\n",
cmd, arg, cmd_status);
}
static void dw_mci_setup_bus(struct dw_mci_slot *slot, bool force_clkinit)
{
struct dw_mci *host = slot->host;