mmc: core: Replace the argument of mmc_sd_switch() with defines

Replace with already defined values for readability. While at it, let's
also change the mode-parameter from an int to bool, as the only used values
are 0 or 1.
Signed-off-by: Chanwoo Lee <cw9316.lee@samsung.com>
Link: https://lore.kernel.org/r/20240829024709.402285-1-cw9316.lee@samsung.comSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>

drivers/mmc/core/sd.c

@@ -346,7 +346,7 @@ static int mmc_read_switch(struct mmc_card *card)
 	 * The argument does not matter, as the support bits do not
 	 * change with the arguments.
 	 */
-	err = mmc_sd_switch(card, 0, 0, 0, status);
+	err = mmc_sd_switch(card, SD_SWITCH_CHECK, 0, 0, status);
 	if (err) {
 		/*
 		 * If the host or the card can't do the switch,
@@ -402,7 +402,8 @@ int mmc_sd_switch_hs(struct mmc_card *card)
 	if (!status)
 		return -ENOMEM;
 
-	err = mmc_sd_switch(card, 1, 0, HIGH_SPEED_BUS_SPEED, status);
+	err = mmc_sd_switch(card, SD_SWITCH_SET, 0,
+			HIGH_SPEED_BUS_SPEED, status);
 	if (err)
 		goto out;
 
@@ -434,7 +435,8 @@ static int sd_select_driver_type(struct mmc_card *card, u8 *status)
 						   card_drv_type, &drv_type);
 
 	if (drive_strength) {
-		err = mmc_sd_switch(card, 1, 2, drive_strength, status);
+		err = mmc_sd_switch(card, SD_SWITCH_SET, 2,
+				drive_strength, status);
 		if (err)
 			return err;
 		if ((status[15] & 0xF) != drive_strength) {
@@ -514,7 +516,7 @@ static int sd_set_bus_speed_mode(struct mmc_card *card, u8 *status)
 		return 0;
 	}
 
-	err = mmc_sd_switch(card, 1, 0, card->sd_bus_speed, status);
+	err = mmc_sd_switch(card, SD_SWITCH_SET, 0, card->sd_bus_speed, status);
 	if (err)
 		return err;
 
@@ -605,7 +607,8 @@ static int sd_set_current_limit(struct mmc_card *card, u8 *status)
 		current_limit = SD_SET_CURRENT_LIMIT_200;
 
 	if (current_limit != SD_SET_CURRENT_NO_CHANGE) {
-		err = mmc_sd_switch(card, 1, 3, current_limit, status);
+		err = mmc_sd_switch(card, SD_SWITCH_SET, 3,
+				current_limit, status);
 		if (err)
 			return err;
 

drivers/mmc/core/sd_ops.c

@@ -336,14 +336,13 @@ int mmc_app_send_scr(struct mmc_card *card)
 	return 0;
 }
 
-int mmc_sd_switch(struct mmc_card *card, int mode, int group,
+int mmc_sd_switch(struct mmc_card *card, bool mode, int group,
 	u8 value, u8 *resp)
 {
 	u32 cmd_args;
 
 	/* NOTE: caller guarantees resp is heap-allocated */
 
-	mode = !!mode;
 	value &= 0xF;
 	cmd_args = mode << 31 | 0x00FFFFFF;
 	cmd_args &= ~(0xF << (group * 4));

include/linux/mmc/host.h

@@ -648,7 +648,8 @@ static inline void mmc_debugfs_err_stats_inc(struct mmc_host *host,
 	host->err_stats[stat] += 1;
 }
 
-int mmc_sd_switch(struct mmc_card *card, int mode, int group, u8 value, u8 *resp);
+int mmc_sd_switch(struct mmc_card *card, bool mode, int group,
+		u8 value, u8 *resp);
 int mmc_send_status(struct mmc_card *card, u32 *status);
 int mmc_send_tuning(struct mmc_host *host, u32 opcode, int *cmd_error);
 int mmc_send_abort_tuning(struct mmc_host *host, u32 opcode);