[ARM] pxa/em-x270: add libertas device registration
Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Signed-off-by: Eric Miao <eric.miao@marvell.com>
diff --git a/arch/arm/mach-pxa/em-x270.c b/arch/arm/mach-pxa/em-x270.c
index 920dfb8..67611da 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 @@
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 @@
.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