[ARM] pxa/cm-x270: add libertas device registration (a2099e49) · Commits · 戴 / test

arch/arm/mach-pxa/cm-x270.c

+108 −2

Original line number	Diff line number	Diff line
		@@ -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 */
		@@ -287,6 +298,100 @@ static void __init cmx270_init_mmc(void)
		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,

		};

		static int cm_x270_libertas_setup(struct spi_device *spi)
		{
		int err = gpio_request(GPIO19_WLAN_STRAP, "WLAN STRAP");
		if (err)
		return err;

		err = gpio_request(GPIO102_WLAN_RST, "WLAN RST");
		if (err)
		goto err_free_strap;

		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 int cm_x270_libertas_teardown(struct spi_device *spi)
		{
		gpio_set_value(GPIO102_WLAN_RST, 0);
		gpio_free(GPIO102_WLAN_RST);
		gpio_free(GPIO19_WLAN_STRAP);

		return 0;
		}

		struct libertas_spi_platform_data cm_x270_libertas_pdata = {
		.use_dummy_writes = 1,
		.setup = cm_x270_libertas_setup,
		.teardown = cm_x270_libertas_teardown,
		};

		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)
		{
		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_spi(void) {}
		#endif

		void __init cmx270_init(void)
		{
		pxa2xx_mfp_config(ARRAY_AND_SIZE(cmx270_pin_config));
		@@ -299,4 +404,5 @@ void __init cmx270_init(void)
		cmx270_init_mmc();
		cmx270_init_ohci();
		cmx270_init_2700G();
		cmx270_init_spi();
		}

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