[U-Boot] [PATCH v2 08/15] dm: mmc: sunxi: Pass private data around explicitly
Simon Glass
sjg at chromium.org
Tue Jul 4 19:31:25 UTC 2017
At present the driver-private data is obtained in various functions by
various means. With driver model this is provided automatically. Without
driver model it comes from a C array declared at the top of the file.
Adjust internal functions so that they are passed the private data as
a parameter, allowing the caller to obtain it using either means.
Signed-off-by: Simon Glass <sjg at chromium.org>
---
Changes in v2: None
drivers/mmc/sunxi_mmc.c | 71 +++++++++++++++++++++++++++++--------------------
1 file changed, 42 insertions(+), 29 deletions(-)
diff --git a/drivers/mmc/sunxi_mmc.c b/drivers/mmc/sunxi_mmc.c
index 9276a29d76..bd41fbb752 100644
--- a/drivers/mmc/sunxi_mmc.c
+++ b/drivers/mmc/sunxi_mmc.c
@@ -176,9 +176,8 @@ static int mmc_clk_io_on(int sdc_no)
return mmc_set_mod_clk(priv, 24000000);
}
-static int mmc_update_clk(struct mmc *mmc)
+static int mmc_update_clk(struct sunxi_mmc_priv *priv)
{
- struct sunxi_mmc_priv *priv = mmc->priv;
unsigned int cmd;
unsigned timeout_msecs = 2000;
@@ -198,15 +197,14 @@ static int mmc_update_clk(struct mmc *mmc)
return 0;
}
-static int mmc_config_clock(struct mmc *mmc)
+static int mmc_config_clock(struct sunxi_mmc_priv *priv, struct mmc *mmc)
{
- struct sunxi_mmc_priv *priv = mmc->priv;
unsigned rval = readl(&priv->reg->clkcr);
/* Disable Clock */
rval &= ~SUNXI_MMC_CLK_ENABLE;
writel(rval, &priv->reg->clkcr);
- if (mmc_update_clk(mmc))
+ if (mmc_update_clk(priv))
return -1;
/* Set mod_clk to new rate */
@@ -220,21 +218,20 @@ static int mmc_config_clock(struct mmc *mmc)
/* Re-enable Clock */
rval |= SUNXI_MMC_CLK_ENABLE;
writel(rval, &priv->reg->clkcr);
- if (mmc_update_clk(mmc))
+ if (mmc_update_clk(priv))
return -1;
return 0;
}
-static int sunxi_mmc_set_ios(struct mmc *mmc)
+static int sunxi_mmc_set_ios_common(struct sunxi_mmc_priv *priv,
+ struct mmc *mmc)
{
- struct sunxi_mmc_priv *priv = mmc->priv;
-
debug("set ios: bus_width: %x, clock: %d\n",
mmc->bus_width, mmc->clock);
/* Change clock first */
- if (mmc->clock && mmc_config_clock(mmc) != 0) {
+ if (mmc->clock && mmc_config_clock(priv, mmc) != 0) {
priv->fatal_err = 1;
return -EINVAL;
}
@@ -261,9 +258,9 @@ static int sunxi_mmc_core_init(struct mmc *mmc)
return 0;
}
-static int mmc_trans_data_by_cpu(struct mmc *mmc, struct mmc_data *data)
+static int mmc_trans_data_by_cpu(struct sunxi_mmc_priv *priv, struct mmc *mmc,
+ struct mmc_data *data)
{
- struct sunxi_mmc_priv *priv = mmc->priv;
const int reading = !!(data->flags & MMC_DATA_READ);
const uint32_t status_bit = reading ? SUNXI_MMC_STATUS_FIFO_EMPTY :
SUNXI_MMC_STATUS_FIFO_FULL;
@@ -293,10 +290,9 @@ static int mmc_trans_data_by_cpu(struct mmc *mmc, struct mmc_data *data)
return 0;
}
-static int mmc_rint_wait(struct mmc *mmc, unsigned int timeout_msecs,
- unsigned int done_bit, const char *what)
+static int mmc_rint_wait(struct sunxi_mmc_priv *priv, struct mmc *mmc,
+ uint timeout_msecs, uint done_bit, const char *what)
{
- struct sunxi_mmc_priv *priv = mmc->priv;
unsigned int status;
do {
@@ -313,10 +309,10 @@ static int mmc_rint_wait(struct mmc *mmc, unsigned int timeout_msecs,
return 0;
}
-static int sunxi_mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
- struct mmc_data *data)
+static int sunxi_mmc_send_cmd_common(struct sunxi_mmc_priv *priv,
+ struct mmc *mmc, struct mmc_cmd *cmd,
+ struct mmc_data *data)
{
- struct sunxi_mmc_priv *priv = mmc->priv;
unsigned int cmdval = SUNXI_MMC_CMD_START;
unsigned int timeout_msecs;
int error = 0;
@@ -372,7 +368,7 @@ static int sunxi_mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
bytecnt = data->blocksize * data->blocks;
debug("trans data %d bytes\n", bytecnt);
writel(cmdval | cmd->cmdidx, &priv->reg->cmd);
- ret = mmc_trans_data_by_cpu(mmc, data);
+ ret = mmc_trans_data_by_cpu(priv, mmc, data);
if (ret) {
error = readl(&priv->reg->rint) &
SUNXI_MMC_RINT_INTERRUPT_ERROR_BIT;
@@ -381,14 +377,15 @@ static int sunxi_mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
}
}
- error = mmc_rint_wait(mmc, 1000, SUNXI_MMC_RINT_COMMAND_DONE, "cmd");
+ error = mmc_rint_wait(priv, mmc, 1000, SUNXI_MMC_RINT_COMMAND_DONE,
+ "cmd");
if (error)
goto out;
if (data) {
timeout_msecs = 120;
debug("cacl timeout %x msec\n", timeout_msecs);
- error = mmc_rint_wait(mmc, timeout_msecs,
+ error = mmc_rint_wait(priv, mmc, timeout_msecs,
data->blocks > 1 ?
SUNXI_MMC_RINT_AUTO_COMMAND_DONE :
SUNXI_MMC_RINT_DATA_OVER,
@@ -425,7 +422,7 @@ static int sunxi_mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
out:
if (error < 0) {
writel(SUNXI_MMC_GCTRL_RESET, &priv->reg->gctrl);
- mmc_update_clk(mmc);
+ mmc_update_clk(priv);
}
writel(0xffffffff, &priv->reg->rint);
writel(readl(&priv->reg->gctrl) | SUNXI_MMC_GCTRL_FIFO_RESET,
@@ -434,7 +431,22 @@ out:
return error;
}
-static int sunxi_mmc_getcd(struct mmc *mmc)
+static int sunxi_mmc_set_ios_legacy(struct mmc *mmc)
+{
+ struct sunxi_mmc_priv *priv = mmc->priv;
+
+ return sunxi_mmc_set_ios_common(priv, mmc);
+}
+
+static int sunxi_mmc_send_cmd_legacy(struct mmc *mmc, struct mmc_cmd *cmd,
+ struct mmc_data *data)
+{
+ struct sunxi_mmc_priv *priv = mmc->priv;
+
+ return sunxi_mmc_send_cmd_common(priv, mmc, cmd, data);
+}
+
+static int sunxi_mmc_getcd_legacy(struct mmc *mmc)
{
struct sunxi_mmc_priv *priv = mmc->priv;
int cd_pin;
@@ -447,17 +459,18 @@ static int sunxi_mmc_getcd(struct mmc *mmc)
}
static const struct mmc_ops sunxi_mmc_ops = {
- .send_cmd = sunxi_mmc_send_cmd,
- .set_ios = sunxi_mmc_set_ios,
+ .send_cmd = sunxi_mmc_send_cmd_legacy,
+ .set_ios = sunxi_mmc_set_ios_legacy,
.init = sunxi_mmc_core_init,
- .getcd = sunxi_mmc_getcd,
+ .getcd = sunxi_mmc_getcd_legacy,
};
struct mmc *sunxi_mmc_init(int sdc_no)
{
- struct mmc_config *cfg = &mmc_host[sdc_no].cfg;
+ struct sunxi_mmc_priv *priv = &mmc_host[sdc_no];
+ struct mmc_config *cfg = &priv->cfg;
- memset(&mmc_host[sdc_no], 0, sizeof(struct sunxi_mmc_priv));
+ memset(priv, '\0', sizeof(struct sunxi_mmc_priv));
cfg->name = "SUNXI SD/MMC";
cfg->ops = &sunxi_mmc_ops;
@@ -479,5 +492,5 @@ struct mmc *sunxi_mmc_init(int sdc_no)
mmc_clk_io_on(sdc_no);
- return mmc_create(cfg, &mmc_host[sdc_no]);
+ return mmc_create(cfg, mmc_host);
}
--
2.13.2.725.g09c95d1e9-goog
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