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MMC core: 

- Fix pwrseq for WILC1000/WILC3000 SDIO card
 
 MMC host:
  - vub300: Fix invalid response handling
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Merge tag 'mmc-v6.4-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc

Pull MMC fixes from Ulf Hansson:
 "MMC core:
   - Fix pwrseq for WILC1000/WILC3000 SDIO card

  MMC host:
   - vub300: Fix invalid response handling"

* tag 'mmc-v6.4-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
  mmc: pwrseq: sd8787: Fix WILC CHIP_EN and RESETN toggling order
  mmc: vub300: fix invalid response handling
This commit is contained in:
Linus Torvalds 2023-06-02 08:35:13 -04:00
parent 7bdecc2672 0b5d5c436a
commit 921bdc72a0
2 changed files with 29 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

34
drivers/mmc/core/pwrseq_sd8787.c
View File

@ -28,7 +28,6 @@ struct mmc_pwrseq_sd8787 {
struct mmc_pwrseq pwrseq;
struct gpio_desc *reset_gpio;
struct gpio_desc *pwrdn_gpio;
u32 reset_pwrdwn_delay_ms;
};
#define to_pwrseq_sd8787(p) container_of(p, struct mmc_pwrseq_sd8787, pwrseq)
@ -39,7 +38,7 @@ static void mmc_pwrseq_sd8787_pre_power_on(struct mmc_host *host)
gpiod_set_value_cansleep(pwrseq->reset_gpio, 1);
msleep(pwrseq->reset_pwrdwn_delay_ms);
msleep(300);
gpiod_set_value_cansleep(pwrseq->pwrdn_gpio, 1);
}
@ -51,17 +50,37 @@ static void mmc_pwrseq_sd8787_power_off(struct mmc_host *host)
gpiod_set_value_cansleep(pwrseq->reset_gpio, 0);
}
static void mmc_pwrseq_wilc1000_pre_power_on(struct mmc_host *host)
{
struct mmc_pwrseq_sd8787 *pwrseq = to_pwrseq_sd8787(host->pwrseq);
/* The pwrdn_gpio is really CHIP_EN, reset_gpio is RESETN */
gpiod_set_value_cansleep(pwrseq->pwrdn_gpio, 1);
msleep(5);
gpiod_set_value_cansleep(pwrseq->reset_gpio, 1);
}
static void mmc_pwrseq_wilc1000_power_off(struct mmc_host *host)
{
struct mmc_pwrseq_sd8787 *pwrseq = to_pwrseq_sd8787(host->pwrseq);
gpiod_set_value_cansleep(pwrseq->reset_gpio, 0);
gpiod_set_value_cansleep(pwrseq->pwrdn_gpio, 0);
}
static const struct mmc_pwrseq_ops mmc_pwrseq_sd8787_ops = {
.pre_power_on = mmc_pwrseq_sd8787_pre_power_on,
.power_off = mmc_pwrseq_sd8787_power_off,
};
static const u32 sd8787_delay_ms = 300;
static const u32 wilc1000_delay_ms = 5;
static const struct mmc_pwrseq_ops mmc_pwrseq_wilc1000_ops = {
.pre_power_on = mmc_pwrseq_wilc1000_pre_power_on,
.power_off = mmc_pwrseq_wilc1000_power_off,
};
static const struct of_device_id mmc_pwrseq_sd8787_of_match[] = {
{ .compatible = "mmc-pwrseq-sd8787", .data = &sd8787_delay_ms },
{ .compatible = "mmc-pwrseq-wilc1000", .data = &wilc1000_delay_ms },
{ .compatible = "mmc-pwrseq-sd8787", .data = &mmc_pwrseq_sd8787_ops },
{ .compatible = "mmc-pwrseq-wilc1000", .data = &mmc_pwrseq_wilc1000_ops },
{/* sentinel */},
};
MODULE_DEVICE_TABLE(of, mmc_pwrseq_sd8787_of_match);
@ -77,7 +96,6 @@ static int mmc_pwrseq_sd8787_probe(struct platform_device *pdev)
return -ENOMEM;
match = of_match_node(mmc_pwrseq_sd8787_of_match, pdev->dev.of_node);
pwrseq->reset_pwrdwn_delay_ms = *(u32 *)match->data;
pwrseq->pwrdn_gpio = devm_gpiod_get(dev, "powerdown", GPIOD_OUT_LOW);
if (IS_ERR(pwrseq->pwrdn_gpio))
@ -88,7 +106,7 @@ static int mmc_pwrseq_sd8787_probe(struct platform_device *pdev)
return PTR_ERR(pwrseq->reset_gpio);
pwrseq->pwrseq.dev = dev;
pwrseq->pwrseq.ops = &mmc_pwrseq_sd8787_ops;
pwrseq->pwrseq.ops = match->data;
pwrseq->pwrseq.owner = THIS_MODULE;
platform_set_drvdata(pdev, pwrseq);

3
drivers/mmc/host/vub300.c
View File

@ -1713,6 +1713,9 @@ static void construct_request_response(struct vub300_mmc_host *vub300,
int bytes = 3 & less_cmd;
int words = less_cmd >> 2;
u8 *r = vub300->resp.response.command_response;
if (!resp_len)
return;
if (bytes == 3) {
cmd->resp[words] = (r[1 + (words << 2)] << 24)
| (r[2 + (words << 2)] << 16)