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Commit c9be0e39 authored by Mike Rapoport's avatar Mike Rapoport Committed by Eric Miao
Browse files

[ARM] pxa/em-x270: add libertas device registration 



Signed-off-by: default avatarMike Rapoport <mike@compulab.co.il>
Signed-off-by: default avatarEric Miao <eric.miao@marvell.com>
parent eb650b9e

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

+78 −8
Original line number Diff line number Diff line
@@ -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,
@@ -648,6 +652,62 @@ 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",
@@ -657,11 +717,21 @@ static struct spi_board_info em_x270_spi_devices[] __initdata = { 
		.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