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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>
This commit is contained in:
Srinivas Kandagatla 2014-06-02 10:09:39 +01:00 committed by Ulf Hansson
parent e8740644ab
commit ae7b0061f6
1 changed files with 5 additions and 0 deletions
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5
drivers/mmc/host/mmci.c
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@ -59,6 +59,7 @@ static unsigned int fmax = 515633;
* is asserted (likewise for RX) * is asserted (likewise for RX)
* @fifohalfsize: number of bytes that can be written when MCI_TXFIFOHALFEMPTY * @fifohalfsize: number of bytes that can be written when MCI_TXFIFOHALFEMPTY
* is asserted (likewise for RX) * is asserted (likewise for RX)
* @data_cmd_enable: enable value for data commands.
* @sdio: variant supports SDIO * @sdio: variant supports SDIO
* @st_clkdiv: true if using a ST-specific clock divider algorithm * @st_clkdiv: true if using a ST-specific clock divider algorithm
* @datactrl_mask_ddrmode: ddr mode mask in datactrl register. * @datactrl_mask_ddrmode: ddr mode mask in datactrl register.
@ -79,6 +80,7 @@ struct variant_data {
unsigned int datalength_bits; unsigned int datalength_bits;
unsigned int fifosize; unsigned int fifosize;
unsigned int fifohalfsize; unsigned int fifohalfsize;
unsigned int data_cmd_enable;
unsigned int datactrl_mask_ddrmode; unsigned int datactrl_mask_ddrmode;
bool sdio; bool sdio;
bool st_clkdiv; bool st_clkdiv;
@ -841,6 +843,9 @@ mmci_start_command(struct mmci_host *host, struct mmc_command *cmd, u32 c)
if (/*interrupt*/0) if (/*interrupt*/0)
c |= MCI_CPSM_INTERRUPT; c |= MCI_CPSM_INTERRUPT;
if (mmc_cmd_type(cmd) == MMC_CMD_ADTC)
c |= host->variant->data_cmd_enable;
host->cmd = cmd; host->cmd = cmd;
writel(cmd->arg, base + MMCIARGUMENT); writel(cmd->arg, base + MMCIARGUMENT);