Commit 36f8dafe authored by Linus Torvalds's avatar Linus Torvalds

Merge tag 'mmc-v4.3-rc3' of git://git.linaro.org/people/ulf.hansson/mmc

Pull MMC fixes from Ulf Hansson:
 "Here are some mmc fixes intended for v4.3 rc4:

  MMC core:
   - Allow users of mmc_of_parse() to succeed when CONFIG_GPIOLIB is
     unset
   - Prevent infinite loop of re-tuning for CRC-errors for CMD19 and
     CMD21

   MMC host:
   - pxamci: Fix issues with card detect
   - sunxi: Fix clk-delay settings"

* tag 'mmc-v4.3-rc3' of git://git.linaro.org/people/ulf.hansson/mmc:
  mmc: core: fix dead loop of mmc_retune
  mmc: pxamci: fix card detect with slot-gpio API
  mmc: sunxi: Fix clk-delay settings
  mmc: core: Don't return an error for CD/WP GPIOs when GPIOLIB is unset
parents 8c25ab8b 031277d4
......@@ -134,9 +134,11 @@ void mmc_request_done(struct mmc_host *host, struct mmc_request *mrq)
int err = cmd->error;
/* Flag re-tuning needed on CRC errors */
if (err == -EILSEQ || (mrq->sbc && mrq->sbc->error == -EILSEQ) ||
if ((cmd->opcode != MMC_SEND_TUNING_BLOCK &&
cmd->opcode != MMC_SEND_TUNING_BLOCK_HS200) &&
(err == -EILSEQ || (mrq->sbc && mrq->sbc->error == -EILSEQ) ||
(mrq->data && mrq->data->error == -EILSEQ) ||
(mrq->stop && mrq->stop->error == -EILSEQ))
(mrq->stop && mrq->stop->error == -EILSEQ)))
mmc_retune_needed(host);
if (err && cmd->retries && mmc_host_is_spi(host)) {
......
......@@ -457,7 +457,7 @@ int mmc_of_parse(struct mmc_host *host)
0, &cd_gpio_invert);
if (!ret)
dev_info(host->parent, "Got CD GPIO\n");
else if (ret != -ENOENT)
else if (ret != -ENOENT && ret != -ENOSYS)
return ret;
/*
......@@ -481,7 +481,7 @@ int mmc_of_parse(struct mmc_host *host)
ret = mmc_gpiod_request_ro(host, "wp", 0, false, 0, &ro_gpio_invert);
if (!ret)
dev_info(host->parent, "Got WP GPIO\n");
else if (ret != -ENOENT)
else if (ret != -ENOENT && ret != -ENOSYS)
return ret;
if (of_property_read_bool(np, "disable-wp"))
......
......@@ -28,6 +28,7 @@
#include <linux/clk.h>
#include <linux/err.h>
#include <linux/mmc/host.h>
#include <linux/mmc/slot-gpio.h>
#include <linux/io.h>
#include <linux/regulator/consumer.h>
#include <linux/gpio.h>
......@@ -454,12 +455,8 @@ static int pxamci_get_ro(struct mmc_host *mmc)
{
struct pxamci_host *host = mmc_priv(mmc);
if (host->pdata && gpio_is_valid(host->pdata->gpio_card_ro)) {
if (host->pdata->gpio_card_ro_invert)
return !gpio_get_value(host->pdata->gpio_card_ro);
else
return gpio_get_value(host->pdata->gpio_card_ro);
}
if (host->pdata && gpio_is_valid(host->pdata->gpio_card_ro))
return mmc_gpio_get_ro(mmc);
if (host->pdata && host->pdata->get_ro)
return !!host->pdata->get_ro(mmc_dev(mmc));
/*
......@@ -551,6 +548,7 @@ static void pxamci_enable_sdio_irq(struct mmc_host *host, int enable)
static const struct mmc_host_ops pxamci_ops = {
.request = pxamci_request,
.get_cd = mmc_gpio_get_cd,
.get_ro = pxamci_get_ro,
.set_ios = pxamci_set_ios,
.enable_sdio_irq = pxamci_enable_sdio_irq,
......@@ -790,37 +788,31 @@ static int pxamci_probe(struct platform_device *pdev)
gpio_power = host->pdata->gpio_power;
}
if (gpio_is_valid(gpio_power)) {
ret = gpio_request(gpio_power, "mmc card power");
ret = devm_gpio_request(&pdev->dev, gpio_power,
"mmc card power");
if (ret) {
dev_err(&pdev->dev, "Failed requesting gpio_power %d\n", gpio_power);
dev_err(&pdev->dev, "Failed requesting gpio_power %d\n",
gpio_power);
goto out;
}
gpio_direction_output(gpio_power,
host->pdata->gpio_power_invert);
}
if (gpio_is_valid(gpio_ro)) {
ret = gpio_request(gpio_ro, "mmc card read only");
if (ret) {
dev_err(&pdev->dev, "Failed requesting gpio_ro %d\n", gpio_ro);
goto err_gpio_ro;
}
gpio_direction_input(gpio_ro);
if (gpio_is_valid(gpio_ro))
ret = mmc_gpio_request_ro(mmc, gpio_ro);
if (ret) {
dev_err(&pdev->dev, "Failed requesting gpio_ro %d\n", gpio_ro);
goto out;
} else {
mmc->caps |= host->pdata->gpio_card_ro_invert ?
MMC_CAP2_RO_ACTIVE_HIGH : 0;
}
if (gpio_is_valid(gpio_cd)) {
ret = gpio_request(gpio_cd, "mmc card detect");
if (ret) {
dev_err(&pdev->dev, "Failed requesting gpio_cd %d\n", gpio_cd);
goto err_gpio_cd;
}
gpio_direction_input(gpio_cd);
ret = request_irq(gpio_to_irq(gpio_cd), pxamci_detect_irq,
IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
"mmc card detect", mmc);
if (ret) {
dev_err(&pdev->dev, "failed to request card detect IRQ\n");
goto err_request_irq;
}
if (gpio_is_valid(gpio_cd))
ret = mmc_gpio_request_cd(mmc, gpio_cd, 0);
if (ret) {
dev_err(&pdev->dev, "Failed requesting gpio_cd %d\n", gpio_cd);
goto out;
}
if (host->pdata && host->pdata->init)
......@@ -835,13 +827,7 @@ static int pxamci_probe(struct platform_device *pdev)
return 0;
err_request_irq:
gpio_free(gpio_cd);
err_gpio_cd:
gpio_free(gpio_ro);
err_gpio_ro:
gpio_free(gpio_power);
out:
out:
if (host) {
if (host->dma_chan_rx)
dma_release_channel(host->dma_chan_rx);
......@@ -873,14 +859,6 @@ static int pxamci_remove(struct platform_device *pdev)
gpio_ro = host->pdata->gpio_card_ro;
gpio_power = host->pdata->gpio_power;
}
if (gpio_is_valid(gpio_cd)) {
free_irq(gpio_to_irq(gpio_cd), mmc);
gpio_free(gpio_cd);
}
if (gpio_is_valid(gpio_ro))
gpio_free(gpio_ro);
if (gpio_is_valid(gpio_power))
gpio_free(gpio_power);
if (host->vcc)
regulator_put(host->vcc);
......
......@@ -210,6 +210,16 @@
#define SDXC_IDMAC_DES0_CES BIT(30) /* card error summary */
#define SDXC_IDMAC_DES0_OWN BIT(31) /* 1-idma owns it, 0-host owns it */
#define SDXC_CLK_400K 0
#define SDXC_CLK_25M 1
#define SDXC_CLK_50M 2
#define SDXC_CLK_50M_DDR 3
struct sunxi_mmc_clk_delay {
u32 output;
u32 sample;
};
struct sunxi_idma_des {
u32 config;
u32 buf_size;
......@@ -229,6 +239,7 @@ struct sunxi_mmc_host {
struct clk *clk_mmc;
struct clk *clk_sample;
struct clk *clk_output;
const struct sunxi_mmc_clk_delay *clk_delays;
/* irq */
spinlock_t lock;
......@@ -654,25 +665,19 @@ static int sunxi_mmc_clk_set_rate(struct sunxi_mmc_host *host,
/* determine delays */
if (rate <= 400000) {
oclk_dly = 180;
sclk_dly = 42;
oclk_dly = host->clk_delays[SDXC_CLK_400K].output;
sclk_dly = host->clk_delays[SDXC_CLK_400K].sample;
} else if (rate <= 25000000) {
oclk_dly = 180;
sclk_dly = 75;
oclk_dly = host->clk_delays[SDXC_CLK_25M].output;
sclk_dly = host->clk_delays[SDXC_CLK_25M].sample;
} else if (rate <= 50000000) {
if (ios->timing == MMC_TIMING_UHS_DDR50) {
oclk_dly = 60;
sclk_dly = 120;
oclk_dly = host->clk_delays[SDXC_CLK_50M_DDR].output;
sclk_dly = host->clk_delays[SDXC_CLK_50M_DDR].sample;
} else {
oclk_dly = 90;
sclk_dly = 150;
oclk_dly = host->clk_delays[SDXC_CLK_50M].output;
sclk_dly = host->clk_delays[SDXC_CLK_50M].sample;
}
} else if (rate <= 100000000) {
oclk_dly = 6;
sclk_dly = 24;
} else if (rate <= 200000000) {
oclk_dly = 3;
sclk_dly = 12;
} else {
return -EINVAL;
}
......@@ -871,6 +876,7 @@ static void sunxi_mmc_request(struct mmc_host *mmc, struct mmc_request *mrq)
static const struct of_device_id sunxi_mmc_of_match[] = {
{ .compatible = "allwinner,sun4i-a10-mmc", },
{ .compatible = "allwinner,sun5i-a13-mmc", },
{ .compatible = "allwinner,sun9i-a80-mmc", },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, sunxi_mmc_of_match);
......@@ -884,6 +890,20 @@ static struct mmc_host_ops sunxi_mmc_ops = {
.hw_reset = sunxi_mmc_hw_reset,
};
static const struct sunxi_mmc_clk_delay sunxi_mmc_clk_delays[] = {
[SDXC_CLK_400K] = { .output = 180, .sample = 180 },
[SDXC_CLK_25M] = { .output = 180, .sample = 75 },
[SDXC_CLK_50M] = { .output = 90, .sample = 120 },
[SDXC_CLK_50M_DDR] = { .output = 60, .sample = 120 },
};
static const struct sunxi_mmc_clk_delay sun9i_mmc_clk_delays[] = {
[SDXC_CLK_400K] = { .output = 180, .sample = 180 },
[SDXC_CLK_25M] = { .output = 180, .sample = 75 },
[SDXC_CLK_50M] = { .output = 150, .sample = 120 },
[SDXC_CLK_50M_DDR] = { .output = 90, .sample = 120 },
};
static int sunxi_mmc_resource_request(struct sunxi_mmc_host *host,
struct platform_device *pdev)
{
......@@ -895,6 +915,11 @@ static int sunxi_mmc_resource_request(struct sunxi_mmc_host *host,
else
host->idma_des_size_bits = 16;
if (of_device_is_compatible(np, "allwinner,sun9i-a80-mmc"))
host->clk_delays = sun9i_mmc_clk_delays;
else
host->clk_delays = sunxi_mmc_clk_delays;
ret = mmc_regulator_get_supply(host->mmc);
if (ret) {
if (ret != -EPROBE_DEFER)
......
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