diff options
Diffstat (limited to 'arch/arm/mach-pxa/em-x270.c')
| -rw-r--r-- | arch/arm/mach-pxa/em-x270.c | 86 |
1 files changed, 78 insertions, 8 deletions
diff --git a/arch/arm/mach-pxa/em-x270.c b/arch/arm/mach-pxa/em-x270.c index 920dfb8d36d..67611dadb44 100644 --- a/arch/arm/mach-pxa/em-x270.c +++ b/arch/arm/mach-pxa/em-x270.c @@ -25,8 +25,10 @@ #include <linux/regulator/machine.h> #include <linux/spi/spi.h> #include <linux/spi/tdo24m.h> +#include <linux/spi/libertas_spi.h> #include <linux/power_supply.h> #include <linux/apm-emulation.h> +#include <linux/delay.h> #include <media/soc_camera.h> @@ -62,6 +64,8 @@ #define GPIO93_CAM_RESET (93) #define GPIO41_ETHIRQ (41) #define EM_X270_ETHIRQ IRQ_GPIO(GPIO41_ETHIRQ) +#define GPIO115_WLAN_PWEN (115) +#define GPIO19_WLAN_STRAP (19) static int mmc_cd; static int nand_rb; @@ -159,8 +163,8 @@ static unsigned long common_pin_config[] = { GPIO57_SSP1_TXD, /* SSP2 */ - GPIO19_SSP2_SCLK, - GPIO14_SSP2_SFRM, + GPIO19_GPIO, /* SSP2 clock is used as GPIO for Libertas pin-strap */ + GPIO14_GPIO, GPIO89_SSP2_TXD, GPIO88_SSP2_RXD, @@ -648,20 +652,86 @@ static struct tdo24m_platform_data em_x270_tdo24m_pdata = { .model = TDO35S, }; +static struct pxa2xx_spi_master em_x270_spi_2_info = { + .num_chipselect = 1, + .enable_dma = 1, +}; + +static struct pxa2xx_spi_chip em_x270_libertas_chip = { + .rx_threshold = 1, + .tx_threshold = 1, + .timeout = 1000, +}; + +static unsigned long em_x270_libertas_pin_config[] = { + /* SSP2 */ + GPIO19_SSP2_SCLK, + GPIO14_GPIO, + GPIO89_SSP2_TXD, + GPIO88_SSP2_RXD, +}; + +static int em_x270_libertas_setup(struct spi_device *spi) +{ + int err = gpio_request(GPIO115_WLAN_PWEN, "WLAN PWEN"); + if (err) + return err; + + gpio_direction_output(GPIO19_WLAN_STRAP, 1); + mdelay(100); + + pxa2xx_mfp_config(ARRAY_AND_SIZE(em_x270_libertas_pin_config)); + + gpio_direction_output(GPIO115_WLAN_PWEN, 0); + mdelay(100); + gpio_set_value(GPIO115_WLAN_PWEN, 1); + mdelay(100); + + spi->bits_per_word = 16; + spi_setup(spi); + + return 0; +} + +static int em_x270_libertas_teardown(struct spi_device *spi) +{ + gpio_set_value(GPIO115_WLAN_PWEN, 0); + gpio_free(GPIO115_WLAN_PWEN); + + return 0; +} + +struct libertas_spi_platform_data em_x270_libertas_pdata = { + .use_dummy_writes = 1, + .gpio_cs = 14, + .setup = em_x270_libertas_setup, + .teardown = em_x270_libertas_teardown, +}; + static struct spi_board_info em_x270_spi_devices[] __initdata = { { - .modalias = "tdo24m", - .max_speed_hz = 1000000, - .bus_num = 1, - .chip_select = 0, - .controller_data = &em_x270_tdo24m_chip, - .platform_data = &em_x270_tdo24m_pdata, + .modalias = "tdo24m", + .max_speed_hz = 1000000, + .bus_num = 1, + .chip_select = 0, + .controller_data = &em_x270_tdo24m_chip, + .platform_data = &em_x270_tdo24m_pdata, + }, + { + .modalias = "libertas_spi", + .max_speed_hz = 13000000, + .bus_num = 2, + .irq = IRQ_GPIO(116), + .chip_select = 0, + .controller_data = &em_x270_libertas_chip, + .platform_data = &em_x270_libertas_pdata, }, }; static void __init em_x270_init_spi(void) { pxa2xx_set_spi_info(1, &em_x270_spi_info); + pxa2xx_set_spi_info(2, &em_x270_spi_2_info); spi_register_board_info(ARRAY_AND_SIZE(em_x270_spi_devices)); } #else |