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ARM: pxa: propagate errors from regulator_enable() to pxamci

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The em_x270_mci_setpower() and em_x270_usb_hub_init() functions
call regulator_enable(), which may return an error that must
be checked.

This changes the em_x270_usb_hub_init() function to bail out
if it fails, and changes the pxamci_platform_data->setpower
callback so that the a failed em_x270_mci_setpower call
can be propagated by the pxamci driver into the mmc core.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Mike Rapoport <mike@compulab.co.il>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: Haojian Zhuang <haojian.zhuang@gmail.com>
Acked-by: Chris Ball <cjb@laptop.org>
[olof: fixed order of regulator_enable() and test in em_x270_usb_hub_init]
Signed-off-by: Olof Johansson <olof@lixom.net>
This commit is contained in:
Arnd Bergmann 2013-07-05 17:51:20 +02:00 committed by Olof Johansson
parent fe08bf9f46
commit a829abf8da
8 changed files with 27 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
arch/arm/mach-pxa/em-x270.c
View File

@ -477,16 +477,24 @@ static int em_x270_usb_hub_init(void)
/* USB Hub power-on and reset */
gpio_direction_output(usb_hub_reset, 1);
gpio_direction_output(GPIO9_USB_VBUS_EN, 0);
regulator_enable(em_x270_usb_ldo);
err = regulator_enable(em_x270_usb_ldo);
if (err)
goto err_free_rst_gpio;
gpio_set_value(usb_hub_reset, 0);
gpio_set_value(usb_hub_reset, 1);
regulator_disable(em_x270_usb_ldo);
regulator_enable(em_x270_usb_ldo);
err = regulator_enable(em_x270_usb_ldo);
if (err)
goto err_free_rst_gpio;
gpio_set_value(usb_hub_reset, 0);
gpio_set_value(GPIO9_USB_VBUS_EN, 1);
return 0;
err_free_rst_gpio:
gpio_free(usb_hub_reset);
err_free_vbus_gpio:
gpio_free(GPIO9_USB_VBUS_EN);
err_free_usb_ldo:
@ -592,7 +600,7 @@ err_irq:
return err;
}
static void em_x270_mci_setpower(struct device *dev, unsigned int vdd)
static int em_x270_mci_setpower(struct device *dev, unsigned int vdd)
{
struct pxamci_platform_data* p_d = dev->platform_data;
@ -600,10 +608,11 @@ static void em_x270_mci_setpower(struct device *dev, unsigned int vdd)
int vdd_uV = (2000 + (vdd - __ffs(MMC_VDD_20_21)) * 100) * 1000;
regulator_set_voltage(em_x270_sdio_ldo, vdd_uV, vdd_uV);
regulator_enable(em_x270_sdio_ldo);
return regulator_enable(em_x270_sdio_ldo);
} else {
regulator_disable(em_x270_sdio_ldo);
}
return 0;
}
static void em_x270_mci_exit(struct device *dev, void *data)

3
arch/arm/mach-pxa/mainstone.c
View File

@ -408,7 +408,7 @@ static int mainstone_mci_init(struct device *dev, irq_handler_t mstone_detect_in
return err;
}
static void mainstone_mci_setpower(struct device *dev, unsigned int vdd)
static int mainstone_mci_setpower(struct device *dev, unsigned int vdd)
{
struct pxamci_platform_data* p_d = dev->platform_data;
@ -420,6 +420,7 @@ static void mainstone_mci_setpower(struct device *dev, unsigned int vdd)
printk(KERN_DEBUG "%s: off\n", __func__);
MST_MSCWR1 &= ~MST_MSCWR1_MMC_ON;
}
return 0;
}
static void mainstone_mci_exit(struct device *dev, void *data)

3
arch/arm/mach-pxa/pcm990-baseboard.c
View File

@ -335,7 +335,7 @@ static int pcm990_mci_init(struct device *dev, irq_handler_t mci_detect_int,
return err;
}
static void pcm990_mci_setpower(struct device *dev, unsigned int vdd)
static int pcm990_mci_setpower(struct device *dev, unsigned int vdd)
{
struct pxamci_platform_data *p_d = dev->platform_data;
u8 val;
@ -348,6 +348,7 @@ static void pcm990_mci_setpower(struct device *dev, unsigned int vdd)
val &= ~PCM990_CTRL_MMC2PWR;
pcm990_cpld_writeb(PCM990_CTRL_MMC2PWR, PCM990_CTRL_REG5);
return 0;
}
static void pcm990_mci_exit(struct device *dev, void *data)

4
arch/arm/mach-pxa/poodle.c
View File

@ -258,7 +258,7 @@ err_free_2:
return err;
}
static void poodle_mci_setpower(struct device *dev, unsigned int vdd)
static int poodle_mci_setpower(struct device *dev, unsigned int vdd)
{
struct pxamci_platform_data* p_d = dev->platform_data;
@ -270,6 +270,8 @@ static void poodle_mci_setpower(struct device *dev, unsigned int vdd)
gpio_set_value(POODLE_GPIO_SD_PWR1, 0);
gpio_set_value(POODLE_GPIO_SD_PWR, 0);
}
return 0;
}
static void poodle_mci_exit(struct device *dev, void *data)

4
arch/arm/mach-pxa/spitz.c
View File

@ -598,7 +598,7 @@ static inline void spitz_spi_init(void) {}
* NOTE: The card detect interrupt isn't debounced so we delay it by 250ms to
* give the card a chance to fully insert/eject.
*/
static void spitz_mci_setpower(struct device *dev, unsigned int vdd)
static int spitz_mci_setpower(struct device *dev, unsigned int vdd)
{
struct pxamci_platform_data* p_d = dev->platform_data;
@ -606,6 +606,8 @@ static void spitz_mci_setpower(struct device *dev, unsigned int vdd)
spitz_card_pwr_ctrl(SCOOP_CPR_SD_3V, SCOOP_CPR_SD_3V);
else
spitz_card_pwr_ctrl(SCOOP_CPR_SD_3V, 0x0);
return 0;
}
static struct pxamci_platform_data spitz_mci_platform_data = {

3
arch/arm/mach-pxa/stargate2.c
View File

@ -734,9 +734,10 @@ static int stargate2_mci_init(struct device *dev,
*
* Very simple control. Either it is on or off and is controlled by
* a gpio pin */
static void stargate2_mci_setpower(struct device *dev, unsigned int vdd)
static int stargate2_mci_setpower(struct device *dev, unsigned int vdd)
{
gpio_set_value(SG2_SD_POWER_ENABLE, !!vdd);
return 0;
}
static void stargate2_mci_exit(struct device *dev, void *data)

2
drivers/mmc/host/pxamci.c
View File

@ -128,7 +128,7 @@ static inline int pxamci_set_power(struct pxamci_host *host,
!!on ^ host->pdata->gpio_power_invert);
}
if (!host->vcc && host->pdata && host->pdata->setpower)
host->pdata->setpower(mmc_dev(host->mmc), vdd);
return host->pdata->setpower(mmc_dev(host->mmc), vdd);
return 0;
}

2
include/linux/platform_data/mmc-pxamci.h
View File

@ -12,7 +12,7 @@ struct pxamci_platform_data {
unsigned long detect_delay_ms; /* delay in millisecond before detecting cards after interrupt */
int (*init)(struct device *, irq_handler_t , void *);
int (*get_ro)(struct device *);
void (*setpower)(struct device *, unsigned int);
int (*setpower)(struct device *, unsigned int);
void (*exit)(struct device *, void *);
int gpio_card_detect; /* gpio detecting card insertion */
int gpio_card_ro; /* gpio detecting read only toggle */