From ae7b0061f61e7c96884f4080b4e28544a0cedd76 Mon Sep 17 00:00:00 2001
From: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Date: Mon, 2 Jun 2014 10:09:39 +0100
Subject: [PATCH] mmc: mmci: Add support to data commands via variant
structure.
On some SOCs like Qcom there are explicit bits in the command register
to specify if its a data transfer command or not. So this patch adds
support to such bits in variant data, giving more flexibility to the
driver.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
---
drivers/mmc/host/mmci.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
index 5228c5de334d..0a8cdac1f59c 100644
--- a/drivers/mmc/host/mmci.c
+++ b/drivers/mmc/host/mmci.c
@@ -59,6 +59,7 @@ static unsigned int fmax = 515633;
* is asserted (likewise for RX)
* @fifohalfsize: number of bytes that can be written when MCI_TXFIFOHALFEMPTY
* is asserted (likewise for RX)
+ * @data_cmd_enable: enable value for data commands.
* @sdio: variant supports SDIO
* @st_clkdiv: true if using a ST-specific clock divider algorithm
* @datactrl_mask_ddrmode: ddr mode mask in datactrl register.
@@ -79,6 +80,7 @@ struct variant_data {
unsigned int datalength_bits;
unsigned int fifosize;
unsigned int fifohalfsize;
+ unsigned int data_cmd_enable;
unsigned int datactrl_mask_ddrmode;
bool sdio;
bool st_clkdiv;
@@ -841,6 +843,9 @@ mmci_start_command(struct mmci_host *host, struct mmc_command *cmd, u32 c)
if (/*interrupt*/0)
c |= MCI_CPSM_INTERRUPT;
+ if (mmc_cmd_type(cmd) == MMC_CMD_ADTC)
+ c |= host->variant->data_cmd_enable;
+
host->cmd = cmd;
writel(cmd->arg, base + MMCIARGUMENT);