diff options
Diffstat (limited to 'arch/arm/mach-pxa/cm-x270.c')
| -rw-r--r-- | arch/arm/mach-pxa/cm-x270.c | 146 |
1 files changed, 104 insertions, 42 deletions
diff --git a/arch/arm/mach-pxa/cm-x270.c b/arch/arm/mach-pxa/cm-x270.c index 1d2cec25391d..eea78b6c2bc5 100644 --- a/arch/arm/mach-pxa/cm-x270.c +++ b/arch/arm/mach-pxa/cm-x270.c @@ -13,13 +13,18 @@ #include <linux/sysdev.h> #include <linux/irq.h> #include <linux/gpio.h> +#include <linux/delay.h> #include <linux/rtc-v3020.h> #include <video/mbxfb.h> +#include <linux/spi/spi.h> +#include <linux/spi/libertas_spi.h> + #include <mach/pxa27x.h> #include <mach/ohci.h> #include <mach/mmc.h> +#include <mach/pxa2xx_spi.h> #include "generic.h" @@ -34,6 +39,10 @@ /* MMC power enable */ #define GPIO105_MMC_POWER (105) +/* WLAN GPIOS */ +#define GPIO19_WLAN_STRAP (19) +#define GPIO102_WLAN_RST (102) + static unsigned long cmx270_pin_config[] = { /* AC'97 */ GPIO28_AC97_BITCLK, @@ -94,8 +103,8 @@ static unsigned long cmx270_pin_config[] = { GPIO26_SSP1_RXD, /* SSP2 */ - GPIO19_SSP2_SCLK, - GPIO14_SSP2_SFRM, + GPIO19_GPIO, /* SSP2 clock is used as GPIO for Libertas pin-strap */ + GPIO14_GPIO, GPIO87_SSP2_TXD, GPIO88_SSP2_RXD, @@ -123,6 +132,7 @@ static unsigned long cmx270_pin_config[] = { GPIO0_GPIO | WAKEUP_ON_EDGE_BOTH, GPIO105_GPIO | MFP_LPM_DRIVE_HIGH, /* MMC/SD power */ GPIO53_GPIO, /* PC card reset */ + GPIO102_GPIO, /* WLAN reset */ /* NAND controls */ GPIO11_GPIO | MFP_LPM_DRIVE_HIGH, /* NAND CE# */ @@ -131,6 +141,7 @@ static unsigned long cmx270_pin_config[] = { /* interrupts */ GPIO10_GPIO, /* DM9000 interrupt */ GPIO83_GPIO, /* MMC card detect */ + GPIO95_GPIO, /* WLAN interrupt */ }; /* V3020 RTC */ @@ -271,64 +282,114 @@ static inline void cmx270_init_ohci(void) {} #endif #if defined(CONFIG_MMC) || defined(CONFIG_MMC_MODULE) -static int cmx270_mci_init(struct device *dev, - irq_handler_t cmx270_detect_int, - void *data) +static struct pxamci_platform_data cmx270_mci_platform_data = { + .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34, + .gpio_card_detect = GPIO83_MMC_IRQ, + .gpio_card_ro = -1, + .gpio_power = GPIO105_MMC_POWER, + .gpio_power_invert = 1, +}; + +static void __init cmx270_init_mmc(void) { - int err; + pxa_set_mci_info(&cmx270_mci_platform_data); +} +#else +static inline void cmx270_init_mmc(void) {} +#endif + +#if defined(CONFIG_SPI_PXA2XX) || defined(CONFIG_SPI_PXA2XX_MODULE) +static struct pxa2xx_spi_master cm_x270_spi_info = { + .num_chipselect = 1, + .enable_dma = 1, +}; + +static struct pxa2xx_spi_chip cm_x270_libertas_chip = { + .rx_threshold = 1, + .tx_threshold = 1, + .timeout = 1000, + .gpio_cs = 14, +}; + +static unsigned long cm_x270_libertas_pin_config[] = { + /* SSP2 */ + GPIO19_SSP2_SCLK, + GPIO14_GPIO, + GPIO87_SSP2_TXD, + GPIO88_SSP2_RXD, + +}; - err = gpio_request(GPIO105_MMC_POWER, "MMC/SD power"); - if (err) { - dev_warn(dev, "power gpio unavailable\n"); +static int cm_x270_libertas_setup(struct spi_device *spi) +{ + int err = gpio_request(GPIO19_WLAN_STRAP, "WLAN STRAP"); + if (err) return err; - } - gpio_direction_output(GPIO105_MMC_POWER, 0); + err = gpio_request(GPIO102_WLAN_RST, "WLAN RST"); + if (err) + goto err_free_strap; - err = request_irq(CMX270_MMC_IRQ, cmx270_detect_int, - IRQF_DISABLED | IRQF_TRIGGER_FALLING, - "MMC card detect", data); - if (err) { - gpio_free(GPIO105_MMC_POWER); - dev_err(dev, "cmx270_mci_init: MMC/SD: can't" - " request MMC card detect IRQ\n"); - } + err = gpio_direction_output(GPIO102_WLAN_RST, 0); + if (err) + goto err_free_strap; + msleep(100); + + err = gpio_direction_output(GPIO19_WLAN_STRAP, 1); + if (err) + goto err_free_strap; + msleep(100); + + pxa2xx_mfp_config(ARRAY_AND_SIZE(cm_x270_libertas_pin_config)); + + gpio_set_value(GPIO102_WLAN_RST, 1); + msleep(100); + + spi->bits_per_word = 16; + spi_setup(spi); + + return 0; + +err_free_strap: + gpio_free(GPIO19_WLAN_STRAP); return err; } -static void cmx270_mci_setpower(struct device *dev, unsigned int vdd) +static int cm_x270_libertas_teardown(struct spi_device *spi) { - struct pxamci_platform_data *p_d = dev->platform_data; - - if ((1 << vdd) & p_d->ocr_mask) { - dev_dbg(dev, "power on\n"); - gpio_set_value(GPIO105_MMC_POWER, 0); - } else { - gpio_set_value(GPIO105_MMC_POWER, 1); - dev_dbg(dev, "power off\n"); - } -} + gpio_set_value(GPIO102_WLAN_RST, 0); + gpio_free(GPIO102_WLAN_RST); + gpio_free(GPIO19_WLAN_STRAP); -static void cmx270_mci_exit(struct device *dev, void *data) -{ - free_irq(CMX270_MMC_IRQ, data); - gpio_free(GPIO105_MMC_POWER); + return 0; } -static struct pxamci_platform_data cmx270_mci_platform_data = { - .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34, - .init = cmx270_mci_init, - .setpower = cmx270_mci_setpower, - .exit = cmx270_mci_exit, +struct libertas_spi_platform_data cm_x270_libertas_pdata = { + .use_dummy_writes = 1, + .setup = cm_x270_libertas_setup, + .teardown = cm_x270_libertas_teardown, }; -static void __init cmx270_init_mmc(void) +static struct spi_board_info cm_x270_spi_devices[] __initdata = { + { + .modalias = "libertas_spi", + .max_speed_hz = 13000000, + .bus_num = 2, + .irq = gpio_to_irq(95), + .chip_select = 0, + .controller_data = &cm_x270_libertas_chip, + .platform_data = &cm_x270_libertas_pdata, + }, +}; + +static void __init cmx270_init_spi(void) { - pxa_set_mci_info(&cmx270_mci_platform_data); + pxa2xx_set_spi_info(2, &cm_x270_spi_info); + spi_register_board_info(ARRAY_AND_SIZE(cm_x270_spi_devices)); } #else -static inline void cmx270_init_mmc(void) {} +static inline void cmx270_init_spi(void) {} #endif void __init cmx270_init(void) @@ -343,4 +404,5 @@ void __init cmx270_init(void) cmx270_init_mmc(); cmx270_init_ohci(); cmx270_init_2700G(); + cmx270_init_spi(); } |