diff options
| author | Pedro Perez de Heredia <pedro.perez@digi.com> | 2012-02-27 02:24:17 +0100 |
|---|---|---|
| committer | Pedro Perez de Heredia <pedro.perez@digi.com> | 2012-02-27 02:24:17 +0100 |
| commit | 9fdc22b9339b1346834e3ecd07e514016f211c66 (patch) | |
| tree | dbd678e7de6d212418f2abafa4d78eac09b361a4 | |
| parent | f2f651fb097fed944ca6f52ad4fc11cc7979c5f4 (diff) | |
ccxmx53 gpio: configure wifi SD interface as gpio on remove
This commit configures the SD pins connected to the wireless
module as gpios inputs when the driver is removed. This is
needed to avoid some kind of current feedback that happens
through the SD pins that causes that the reset level of the
redpine module doesnt go low enough causing module reload
problems (at least in WinCE).
Configuring the pins as inputs seems to solve the problem.
Signed-off-by: Pedro Perez de Heredia <pedro.perez@digi.com>
| -rw-r--r-- | arch/arm/mach-mx5/mx53_ccwmx53js_gpio.c | 40 |
1 files changed, 37 insertions, 3 deletions
diff --git a/arch/arm/mach-mx5/mx53_ccwmx53js_gpio.c b/arch/arm/mach-mx5/mx53_ccwmx53js_gpio.c index 54cd008ff859..633bc356695d 100644 --- a/arch/arm/mach-mx5/mx53_ccwmx53js_gpio.c +++ b/arch/arm/mach-mx5/mx53_ccwmx53js_gpio.c @@ -148,7 +148,8 @@ EXPORT_SYMBOL(gpio_uart_active); EXPORT_SYMBOL(gpio_uart_inactive); -#if defined(CONFIG_ESDHCI_MXC_SELECT1) +#if defined(CONFIG_ESDHCI_MXC_SELECT1) || defined(CONFIG_MACH_CCWMX53JS) || \ + defined(CONFIG_MACH_CCWMX53JS) static iomux_v3_cfg_t ccwmx53_mmc1_pads[] = { MX53_PAD_SD1_CLK__ESDHC1_CLK, MX53_PAD_SD1_CMD__ESDHC1_CMD, @@ -226,7 +227,8 @@ static iomux_v3_cfg_t ccwmx53_mmc3_pads[] = { void gpio_sdhc_active(int interface) { switch (interface) { -#if defined(CONFIG_ESDHCI_MXC_SELECT1) +#if defined(CONFIG_ESDHCI_MXC_SELECT1) || defined(CONFIG_MACH_CCWMX53JS) || \ + defined(CONFIG_MACH_CCWMX53JS) case 0: mxc_iomux_v3_setup_multiple_pads(ccwmx53_mmc1_pads, ARRAY_SIZE(ccwmx53_mmc1_pads)); @@ -253,7 +255,39 @@ void gpio_sdhc_active(int interface) } } EXPORT_SYMBOL(gpio_sdhc_active); -void gpio_sdhc_inactive(int module) {} + +#if defined(CONFIG_ESDHCI_MXC_SELECT1) || defined(CONFIG_MACH_CCWMX53JS) || \ + defined(CONFIG_MACH_CCWMX53JS) +static iomux_v3_cfg_t ccwmx53_mmc1_gpio_pads[] = { + MX53_PAD_SD1_DATA0__GPIO1_16, + MX53_PAD_SD1_CMD__GPIO1_18, + MX53_PAD_SD1_DATA0__GPIO1_16, +#if defined(ESDHCI_MXC_SELECT1_8BIT_PORT) || defined(ESDHCI_MXC_SELECT1_4BIT_PORT) + MX53_PAD_SD1_DATA1__GPIO1_17, + MX53_PAD_SD1_DATA2__GPIO1_19, + MX53_PAD_SD1_DATA3__GPIO1_21, +#endif /* (ESDHCI_MXC_SELECT1_8BIT_PORT) || (ESDHCI_MXC_SELECT1_4BIT_PORT) */ +#ifdef ESDHCI_MXC_SELECT1_8BIT_PORT + MX53_PAD_PATA_DATA8__GPIO2_8, + MX53_PAD_PATA_DATA9__GPIO2_9, + MX53_PAD_PATA_DATA10__GPIO2_10, + MX53_PAD_PATA_DATA11__GPIO2_11, +#endif /* ESDHCI_MXC_SELECT1_8BIT_PORT */ +}; +#endif /* ESDHCI_MXC_SELECT1 */ + +void gpio_sdhc_inactive(int interface) +{ + switch (interface) { +#if defined(CONFIG_ESDHCI_MXC_SELECT1) || defined(CONFIG_MACH_CCWMX53JS) || \ + defined(CONFIG_MACH_CCWMX53JS) + case 0: + mxc_iomux_v3_setup_multiple_pads(ccwmx53_mmc1_gpio_pads, + ARRAY_SIZE(ccwmx53_mmc1_gpio_pads)); + break; +#endif /* CONFIG_ESDHCI_MXC_SELECT1 */ + } +} EXPORT_SYMBOL(gpio_sdhc_inactive); |