[PATCH 06/11] mmc: core: Prepare mmc_send_cxd_data() to be re-used for additional cmds

From: Ulf Hansson
Date: Tue May 04 2021 - 12:13:05 EST

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@xxxxxxxxxx>
drivers/mmc/core/mmc_ops.c | 11 +++++------
drivers/mmc/core/mmc_ops.h | 2 ++
2 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/drivers/mmc/core/mmc_ops.c b/drivers/mmc/core/mmc_ops.c
index 653627fe02a3..b1da8f1950ee 100644
--- a/drivers/mmc/core/mmc_ops.c
+++ b/drivers/mmc/core/mmc_ops.c
@@ -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,
if (err)
diff --git a/drivers/mmc/core/mmc_ops.h b/drivers/mmc/core/mmc_ops.h
index aca66c128804..2b1d730e56bf 100644
--- a/drivers/mmc/core/mmc_ops.h
+++ b/drivers/mmc/core/mmc_ops.h
@@ -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);