Instead of having a local hack taking care of sending the tuning
command and as well to verify the response pattern, let's convert to
the common mmc_send_tuning() API.
This change affects the Exynos variant, since it's the only one which
support the dw_mmc's ->execute_tuning() callback.
Signed-off-by: Ulf Hansson <ulf.hansson@xxxxxxxxxx>
---
Changes in v3:
Fix return value from dw_mci_exynos_execute_tuning() according to
comment from Jaehoon Chung.
---
drivers/mmc/host/dw_mmc-exynos.c | 48 +++-------------------------------------
drivers/mmc/host/dw_mmc.c | 22 +-----------------
drivers/mmc/host/dw_mmc.h | 8 +------
3 files changed, 5 insertions(+), 73 deletions(-)
diff --git a/drivers/mmc/host/dw_mmc-exynos.c b/drivers/mmc/host/dw_mmc-exynos.c
index 74eb081..12a5eaa 100644
--- a/drivers/mmc/host/dw_mmc-exynos.c
+++ b/drivers/mmc/host/dw_mmc-exynos.c
@@ -340,64 +340,23 @@ out:
return loc;
}
-static int dw_mci_exynos_execute_tuning(struct dw_mci_slot *slot, u32 opcode,
- struct dw_mci_tuning_data *tuning_data)
+static int dw_mci_exynos_execute_tuning(struct dw_mci_slot *slot)
{
struct dw_mci *host = slot->host;
struct mmc_host *mmc = slot->mmc;
- const u8 *blk_pattern = tuning_data->blk_pattern;
- u8 *blk_test;
- unsigned int blksz = tuning_data->blksz;
u8 start_smpl, smpl, candiates = 0;
s8 found = -1;
int ret = 0;
- blk_test = kmalloc(blksz, GFP_KERNEL);
- if (!blk_test)
- return -ENOMEM;
-
start_smpl = dw_mci_exynos_get_clksmpl(host);
do {
- struct mmc_request mrq = {NULL};
- struct mmc_command cmd = {0};
- struct mmc_command stop = {0};
- struct mmc_data data = {0};
- struct scatterlist sg;
-
- cmd.opcode = opcode;
- cmd.arg = 0;
- cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
-
- stop.opcode = MMC_STOP_TRANSMISSION;
- stop.arg = 0;
- stop.flags = MMC_RSP_R1B | MMC_CMD_AC;
-
- data.blksz = blksz;
- data.blocks = 1;
- data.flags = MMC_DATA_READ;
- data.sg = &sg;
- data.sg_len = 1;
-
- sg_init_one(&sg, blk_test, blksz);
- mrq.cmd = &cmd;
- mrq.stop = &stop;
- mrq.data = &data;
- host->mrq = &mrq;
-
mci_writel(host, TMOUT, ~0);
smpl = dw_mci_exynos_move_next_clksmpl(host);
- mmc_wait_for_req(mmc, &mrq);
+ if (!mmc_send_tuning(mmc))
+ candiates |= (1 << smpl);
- if (!cmd.error && !data.error) {
- if (!memcmp(blk_pattern, blk_test, blksz))
- candiates |= (1 << smpl);
- } else {
- dev_dbg(host->dev,
- "Tuning error: cmd.error:%d, data.error:%d\n",
- cmd.error, data.error);
- }
} while (start_smpl != smpl);
found = dw_mci_exynos_get_best_clksmpl(candiates);
@@ -406,7 +365,6 @@ static int dw_mci_exynos_execute_tuning(struct dw_mci_slot *slot, u32 opcode,
else
ret = -EIO;
- kfree(blk_test);
return ret;
}
diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index 6e4d864..88dc50f 100644
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -1312,30 +1312,10 @@ static int dw_mci_execute_tuning(struct mmc_host *mmc, u32 opcode)
struct dw_mci_slot *slot = mmc_priv(mmc);
struct dw_mci *host = slot->host;
const struct dw_mci_drv_data *drv_data = host->drv_data;
- struct dw_mci_tuning_data tuning_data;
int err = -ENOSYS;
- if (opcode == MMC_SEND_TUNING_BLOCK_HS200) {
- if (mmc->ios.bus_width == MMC_BUS_WIDTH_8) {
- tuning_data.blk_pattern = tuning_blk_pattern_8bit;
- tuning_data.blksz = sizeof(tuning_blk_pattern_8bit);
- } else if (mmc->ios.bus_width == MMC_BUS_WIDTH_4) {
- tuning_data.blk_pattern = tuning_blk_pattern_4bit;
- tuning_data.blksz = sizeof(tuning_blk_pattern_4bit);
- } else {
- return -EINVAL;
- }
- } else if (opcode == MMC_SEND_TUNING_BLOCK) {
- tuning_data.blk_pattern = tuning_blk_pattern_4bit;
- tuning_data.blksz = sizeof(tuning_blk_pattern_4bit);
- } else {
- dev_err(host->dev,
- "Undefined command(%d) for tuning\n", opcode);
- return -EINVAL;
- }
-
if (drv_data && drv_data->execute_tuning)
- err = drv_data->execute_tuning(slot, opcode, &tuning_data);
+ err = drv_data->execute_tuning(slot);
return err;
}
diff --git a/drivers/mmc/host/dw_mmc.h b/drivers/mmc/host/dw_mmc.h
index d27d4c0..18c4afe 100644
--- a/drivers/mmc/host/dw_mmc.h
+++ b/drivers/mmc/host/dw_mmc.h
@@ -249,11 +249,6 @@ struct dw_mci_slot {
int sdio_id;
};
-struct dw_mci_tuning_data {
- const u8 *blk_pattern;
- unsigned int blksz;
-};
-
/**
* dw_mci driver data - dw-mshc implementation specific driver data.
* @caps: mmc subsystem specified capabilities of the controller(s).
@@ -275,7 +270,6 @@ struct dw_mci_drv_data {
void (*prepare_command)(struct dw_mci *host, u32 *cmdr);
void (*set_ios)(struct dw_mci *host, struct mmc_ios *ios);
int (*parse_dt)(struct dw_mci *host);
- int (*execute_tuning)(struct dw_mci_slot *slot, u32 opcode,
- struct dw_mci_tuning_data *tuning_data);
+ int (*execute_tuning)(struct dw_mci_slot *slot);
};
#endif /* _DW_MMC_H_ */
--
1.9.1
--
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