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mmc: mediatek: drop too much code of tuning method 

the tuning code is becoming more and more bloated, let's make the
set cmd/data delay to inline function to avoid too much redundant code.

Signed-off-by: Chaotian Jing <chaotian.jing@mediatek.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Chaotian Jing 2018-10-13 15:20:50 +08:00 committed by Ulf Hansson
parent a2e6d1f6b3
commit fd82cc3020
1 changed files with 38 additions and 95 deletions
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133
drivers/mmc/host/mtk-sd.c
View File

@ -1661,6 +1661,30 @@ static struct msdc_delay_phase get_best_delay(struct msdc_host *host, u32 delay)
return delay_phase;
}
static inline void msdc_set_cmd_delay(struct msdc_host *host, u32 value)
{
u32 tune_reg = host->dev_comp->pad_tune_reg;
if (host->top_base)
sdr_set_field(host->top_base + EMMC_TOP_CMD, PAD_CMD_RXDLY,
value);
else
sdr_set_field(host->base + tune_reg, MSDC_PAD_TUNE_CMDRDLY,
value);
}
static inline void msdc_set_data_delay(struct msdc_host *host, u32 value)
{
u32 tune_reg = host->dev_comp->pad_tune_reg;
if (host->top_base)
sdr_set_field(host->top_base + EMMC_TOP_CONTROL,
PAD_DAT_RD_RXDLY, value);
else
sdr_set_field(host->base + tune_reg, MSDC_PAD_TUNE_DATRRDLY,
value);
}
static int msdc_tune_response(struct mmc_host *mmc, u32 opcode)
{
struct msdc_host *host = mmc_priv(mmc);
@ -1681,12 +1705,7 @@ static int msdc_tune_response(struct mmc_host *mmc, u32 opcode)
sdr_clr_bits(host->base + MSDC_IOCON, MSDC_IOCON_RSPL);
for (i = 0 ; i < PAD_DELAY_MAX; i++) {
if (host->top_base)
sdr_set_field(host->top_base + EMMC_TOP_CMD,
PAD_CMD_RXDLY, i);
else
sdr_set_field(host->base + tune_reg,
MSDC_PAD_TUNE_CMDRDLY, i);
msdc_set_cmd_delay(host, i);
/*
* Using the same parameters, it may sometimes pass the test,
* but sometimes it may fail. To make sure the parameters are
@ -1710,12 +1729,7 @@ static int msdc_tune_response(struct mmc_host *mmc, u32 opcode)
sdr_set_bits(host->base + MSDC_IOCON, MSDC_IOCON_RSPL);
for (i = 0; i < PAD_DELAY_MAX; i++) {
if (host->top_base)
sdr_set_field(host->top_base + EMMC_TOP_CMD,
PAD_CMD_RXDLY, i);
else
sdr_set_field(host->base + tune_reg,
MSDC_PAD_TUNE_CMDRDLY, i);
msdc_set_cmd_delay(host, i);
/*
* Using the same parameters, it may sometimes pass the test,
* but sometimes it may fail. To make sure the parameters are
@ -1739,25 +1753,13 @@ skip_fall:
final_maxlen = final_fall_delay.maxlen;
if (final_maxlen == final_rise_delay.maxlen) {
sdr_clr_bits(host->base + MSDC_IOCON, MSDC_IOCON_RSPL);
if (host->top_base)
sdr_set_field(host->base + EMMC_TOP_CMD, PAD_CMD_RXDLY,
final_rise_delay.final_phase);
else
sdr_set_field(host->base + tune_reg,
MSDC_PAD_TUNE_CMDRDLY,
final_rise_delay.final_phase);
final_delay = final_rise_delay.final_phase;
} else {
sdr_set_bits(host->base + MSDC_IOCON, MSDC_IOCON_RSPL);
if (host->top_base)
sdr_set_field(host->base + EMMC_TOP_CMD, PAD_CMD_RXDLY,
final_fall_delay.final_phase);
else
sdr_set_field(host->base + tune_reg,
MSDC_PAD_TUNE_CMDRDLY,
final_fall_delay.final_phase);
final_delay = final_fall_delay.final_phase;
}
msdc_set_cmd_delay(host, final_delay);
if (host->dev_comp->async_fifo || host->hs200_cmd_int_delay)
goto skip_internal;
@ -1832,7 +1834,6 @@ static int msdc_tune_data(struct mmc_host *mmc, u32 opcode)
u32 rise_delay = 0, fall_delay = 0;
struct msdc_delay_phase final_rise_delay, final_fall_delay = { 0,};
u8 final_delay, final_maxlen;
u32 tune_reg = host->dev_comp->pad_tune_reg;
int i, ret;
sdr_set_field(host->base + MSDC_PATCH_BIT, MSDC_INT_DAT_LATCH_CK_SEL,
@ -1840,12 +1841,7 @@ static int msdc_tune_data(struct mmc_host *mmc, u32 opcode)
sdr_clr_bits(host->base + MSDC_IOCON, MSDC_IOCON_DSPL);
sdr_clr_bits(host->base + MSDC_IOCON, MSDC_IOCON_W_DSPL);
for (i = 0 ; i < PAD_DELAY_MAX; i++) {
if (host->top_base)
sdr_set_field(host->top_base + EMMC_TOP_CONTROL,
PAD_DAT_RD_RXDLY, i);
else
sdr_set_field(host->base + tune_reg,
MSDC_PAD_TUNE_DATRRDLY, i);
msdc_set_data_delay(host, i);
ret = mmc_send_tuning(mmc, opcode, NULL);
if (!ret)
rise_delay |= (1 << i);
@ -1859,12 +1855,7 @@ static int msdc_tune_data(struct mmc_host *mmc, u32 opcode)
sdr_set_bits(host->base + MSDC_IOCON, MSDC_IOCON_DSPL);
sdr_set_bits(host->base + MSDC_IOCON, MSDC_IOCON_W_DSPL);
for (i = 0; i < PAD_DELAY_MAX; i++) {
if (host->top_base)
sdr_set_field(host->top_base + EMMC_TOP_CONTROL,
PAD_DAT_RD_RXDLY, i);
else
sdr_set_field(host->base + tune_reg,
MSDC_PAD_TUNE_DATRRDLY, i);
msdc_set_data_delay(host, i);
ret = mmc_send_tuning(mmc, opcode, NULL);
if (!ret)
fall_delay |= (1 << i);
@ -1876,28 +1867,13 @@ skip_fall:
if (final_maxlen == final_rise_delay.maxlen) {
sdr_clr_bits(host->base + MSDC_IOCON, MSDC_IOCON_DSPL);
sdr_clr_bits(host->base + MSDC_IOCON, MSDC_IOCON_W_DSPL);
if (host->top_base)
sdr_set_field(host->top_base + EMMC_TOP_CONTROL,
PAD_DAT_RD_RXDLY,
final_rise_delay.final_phase);
else
sdr_set_field(host->base + tune_reg,
MSDC_PAD_TUNE_DATRRDLY,
final_rise_delay.final_phase);
final_delay = final_rise_delay.final_phase;
} else {
sdr_set_bits(host->base + MSDC_IOCON, MSDC_IOCON_DSPL);
sdr_set_bits(host->base + MSDC_IOCON, MSDC_IOCON_W_DSPL);
if (host->top_base)
sdr_set_field(host->top_base + EMMC_TOP_CONTROL,
PAD_DAT_RD_RXDLY,
final_fall_delay.final_phase);
else
sdr_set_field(host->base + tune_reg,
MSDC_PAD_TUNE_DATRRDLY,
final_fall_delay.final_phase);
final_delay = final_fall_delay.final_phase;
}
msdc_set_data_delay(host, final_delay);
dev_dbg(host->dev, "Final data pad delay: %x\n", final_delay);
return final_delay == 0xff ? -EIO : 0;
@ -1913,7 +1889,6 @@ static int msdc_tune_together(struct mmc_host *mmc, u32 opcode)
u32 rise_delay = 0, fall_delay = 0;
struct msdc_delay_phase final_rise_delay, final_fall_delay = { 0,};
u8 final_delay, final_maxlen;
u32 tune_reg = host->dev_comp->pad_tune_reg;
int i, ret;
sdr_set_field(host->base + MSDC_PATCH_BIT, MSDC_INT_DAT_LATCH_CK_SEL,
@ -1923,17 +1898,8 @@ static int msdc_tune_together(struct mmc_host *mmc, u32 opcode)
sdr_clr_bits(host->base + MSDC_IOCON,
MSDC_IOCON_DSPL | MSDC_IOCON_W_DSPL);
for (i = 0 ; i < PAD_DELAY_MAX; i++) {
if (host->top_base) {
sdr_set_field(host->top_base + EMMC_TOP_CMD,
PAD_CMD_RXDLY, i);
sdr_set_field(host->top_base + EMMC_TOP_CONTROL,
PAD_DAT_RD_RXDLY, i);
} else {
sdr_set_field(host->base + tune_reg,
MSDC_PAD_TUNE_CMDRDLY, i);
sdr_set_field(host->base + tune_reg,
MSDC_PAD_TUNE_DATRRDLY, i);
}
msdc_set_cmd_delay(host, i);
msdc_set_data_delay(host, i);
ret = mmc_send_tuning(mmc, opcode, NULL);
if (!ret)
rise_delay |= (1 << i);
@ -1948,17 +1914,8 @@ static int msdc_tune_together(struct mmc_host *mmc, u32 opcode)
sdr_set_bits(host->base + MSDC_IOCON,
MSDC_IOCON_DSPL | MSDC_IOCON_W_DSPL);
for (i = 0; i < PAD_DELAY_MAX; i++) {
if (host->top_base) {
sdr_set_field(host->top_base + EMMC_TOP_CMD,
PAD_CMD_RXDLY, i);
sdr_set_field(host->top_base + EMMC_TOP_CONTROL,
PAD_DAT_RD_RXDLY, i);
} else {
sdr_set_field(host->base + tune_reg,
MSDC_PAD_TUNE_CMDRDLY, i);
sdr_set_field(host->base + tune_reg,
MSDC_PAD_TUNE_DATRRDLY, i);
}
msdc_set_cmd_delay(host, i);
msdc_set_data_delay(host, i);
ret = mmc_send_tuning(mmc, opcode, NULL);
if (!ret)
fall_delay |= (1 << i);
@ -1979,17 +1936,8 @@ skip_fall:
final_delay = final_fall_delay.final_phase;
}
if (host->top_base) {
sdr_set_field(host->top_base + EMMC_TOP_CMD,
PAD_CMD_RXDLY, final_delay);
sdr_set_field(host->top_base + EMMC_TOP_CONTROL,
PAD_DAT_RD_RXDLY, final_delay);
} else {
sdr_set_field(host->base + tune_reg, MSDC_PAD_TUNE_CMDRDLY,
final_delay);
sdr_set_field(host->base + tune_reg,
MSDC_PAD_TUNE_DATRRDLY, final_delay);
}
msdc_set_cmd_delay(host, final_delay);
msdc_set_data_delay(host, final_delay);
dev_dbg(host->dev, "Final pad delay: %x\n", final_delay);
return final_delay == 0xff ? -EIO : 0;
@ -2006,12 +1954,7 @@ static int msdc_execute_tuning(struct mmc_host *mmc, u32 opcode)
if (host->hs400_mode) {
sdr_clr_bits(host->base + MSDC_IOCON,
MSDC_IOCON_DSPL | MSDC_IOCON_W_DSPL);
if (host->top_base)
sdr_set_field(host->top_base + EMMC_TOP_CONTROL,
PAD_DAT_RD_RXDLY, 0);
else
sdr_set_field(host->base + tune_reg,
MSDC_PAD_TUNE_DATRRDLY, 0);
msdc_set_data_delay(host, 0);
}
goto tune_done;
}