Waiting for data busy is a logically separate operation and should be implemented as a separate routine. Follow Linux kernel example and extract it from dwmci_send_cmd(). This way it doesn't clutter dwmci_send_cmd() function, and can be reused later in other cases.
No functional change.
Signed-off-by: Sam Protsenko semen.protsenko@linaro.org Reviewed-by: Quentin Schulz quentin.schulz@cherry.de --- Changes in v3: - (none)
Changes in v2: - Added R-b tag from Quentin
drivers/mmc/dw_mmc.c | 25 ++++++++++++++++--------- 1 file changed, 16 insertions(+), 9 deletions(-)
diff --git a/drivers/mmc/dw_mmc.c b/drivers/mmc/dw_mmc.c index 9d668b3d8813..a82f6a96db39 100644 --- a/drivers/mmc/dw_mmc.c +++ b/drivers/mmc/dw_mmc.c @@ -246,6 +246,21 @@ static int dwmci_set_transfer_mode(struct dwmci_host *host, return mode; }
+static void dwmci_wait_while_busy(struct dwmci_host *host, struct mmc_cmd *cmd) +{ + unsigned int timeout = 500; /* msec */ + ulong start; + + start = get_timer(0); + while (dwmci_readl(host, DWMCI_STATUS) & DWMCI_BUSY) { + if (get_timer(start) > timeout) { + debug("%s: Timeout on data busy, continue anyway\n", + __func__); + break; + } + } +} + #ifdef CONFIG_DM_MMC static int dwmci_send_cmd(struct udevice *dev, struct mmc_cmd *cmd, struct mmc_data *data) @@ -260,19 +275,11 @@ static int dwmci_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, ALLOC_CACHE_ALIGN_BUFFER(struct dwmci_idmac, cur_idmac, data ? DIV_ROUND_UP(data->blocks, 8) : 0); int ret = 0, flags = 0, i; - unsigned int timeout = 500; u32 retry = 100000; u32 mask, ctrl; - ulong start = get_timer(0); struct bounce_buffer bbstate;
- while (dwmci_readl(host, DWMCI_STATUS) & DWMCI_BUSY) { - if (get_timer(start) > timeout) { - debug("%s: Timeout on data busy, continue anyway\n", __func__); - break; - } - } - + dwmci_wait_while_busy(host, cmd); dwmci_writel(host, DWMCI_RINTSTS, DWMCI_INTMSK_ALL);
if (data) {