Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit ae7b0061 authored by Srinivas Kandagatla's avatar Srinivas Kandagatla Committed by Ulf Hansson
Browse files

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: default avatarSrinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent e8740644

drivers/mmc/host/mmci.c

+5 −0
Original line number Diff line number Diff line
@@ -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);