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mmc: core: Prepare mmc_send_cxd_data() to be re-used for additional cmds

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The function mmc_send_cxd_data() sends a data read command of ADTC type and
prepares to receive an R1 response. To make it even more re-usable, let's
extend it with another in-parameter for the command argument. While at it,
let's also rename the function to mmc_send_adtc_data() as it better
describes its purpose.

Note that, this change doesn't add any new users of the function. Instead
that is done from subsequent changes.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Shawn Lin <shawn.lin@rock-chips.com>
Acked-by: Avri Altman <avri.altman@wdc.com>
Link: https://lore.kernel.org/r/20210504161222.101536-7-ulf.hansson@linaro.org
This commit is contained in:
Ulf Hansson 2021-05-04 18:12:17 +02:00
parent 6fa79651cc
commit cec18ad93e
2 changed files with 7 additions and 6 deletions
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11
drivers/mmc/core/mmc_ops.c
View file

@ -252,9 +252,8 @@ mmc_send_cxd_native(struct mmc_host *host, u32 arg, u32 *cxd, int opcode)
* NOTE: void *buf, caller for the buf is required to use DMA-capable
* buffer or on-stack buffer (with some overhead in callee).
*/
static int
mmc_send_cxd_data(struct mmc_card *card, struct mmc_host *host,
u32 opcode, void *buf, unsigned len)
int mmc_send_adtc_data(struct mmc_card *card, struct mmc_host *host, u32 opcode,
u32 args, void *buf, unsigned len)
{
struct mmc_request mrq = {};
struct mmc_command cmd = {};
@ -265,7 +264,7 @@ mmc_send_cxd_data(struct mmc_card *card, struct mmc_host *host,
mrq.data = &data;
cmd.opcode = opcode;
cmd.arg = 0;
cmd.arg = args;
/* NOTE HACK: the MMC_RSP_SPI_R1 is always correct here, but we
* rely on callers to never use this with "native" calls for reading
@ -311,7 +310,7 @@ static int mmc_spi_send_cxd(struct mmc_host *host, u32 *cxd, u32 opcode)
if (!cxd_tmp)
return -ENOMEM;
ret = mmc_send_cxd_data(NULL, host, opcode, cxd_tmp, 16);
ret = mmc_send_adtc_data(NULL, host, opcode, 0, cxd_tmp, 16);
if (ret)
goto err;
@ -359,7 +358,7 @@ int mmc_get_ext_csd(struct mmc_card *card, u8 **new_ext_csd)
if (!ext_csd)
return -ENOMEM;
err = mmc_send_cxd_data(card, card->host, MMC_SEND_EXT_CSD, ext_csd,
err = mmc_send_adtc_data(card, card->host, MMC_SEND_EXT_CSD, 0, ext_csd,
512);
if (err)
kfree(ext_csd);

2
drivers/mmc/core/mmc_ops.h
View file

@ -26,6 +26,8 @@ int mmc_set_dsr(struct mmc_host *host);
int mmc_go_idle(struct mmc_host *host);
int mmc_send_op_cond(struct mmc_host *host, u32 ocr, u32 *rocr);
int mmc_set_relative_addr(struct mmc_card *card);
int mmc_send_adtc_data(struct mmc_card *card, struct mmc_host *host, u32 opcode,
u32 args, void *buf, unsigned len);
int mmc_send_csd(struct mmc_card *card, u32 *csd);
int __mmc_send_status(struct mmc_card *card, u32 *status, unsigned int retries);
int mmc_send_status(struct mmc_card *card, u32 *status);