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Commit b2aa5e57 authored by Abraham Arce's avatar Abraham Arce Committed by Tony Lindgren
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OMAP4: Ethernet: KS8851 Board Support 



Enable Micrel KS8851 SPI network chip for OMAP4430

Signed-off-by: default avatarAbraham Arce <x0066660@ti.com>
Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
parent 8ebeb545

arch/arm/mach-omap2/board-4430sdp.c

+81 −0
Original line number Diff line number Diff line
@@ -18,6 +18,7 @@ 
#include <linux/io.h>

#include <linux/gpio.h>

#include <linux/usb/otg.h>

#include <linux/spi/spi.h>



#include <mach/hardware.h>

#include <asm/mach-types.h>
@@ -32,6 +33,75 @@ 
#include <asm/hardware/gic.h>

#include <asm/hardware/cache-l2x0.h>



#define ETH_KS8851_IRQ			34

#define ETH_KS8851_POWER_ON		48

#define ETH_KS8851_QUART		138



static struct spi_board_info sdp4430_spi_board_info[] __initdata = {

	{

		.modalias               = "ks8851",

		.bus_num                = 1,

		.chip_select            = 0,

		.max_speed_hz           = 24000000,

		.irq                    = ETH_KS8851_IRQ,

	},

};



static int omap_ethernet_init(void)

{

	int status;



	/* Request of GPIO lines */



	status = gpio_request(ETH_KS8851_POWER_ON, "eth_power");

	if (status) {

		pr_err("Cannot request GPIO %d\n", ETH_KS8851_POWER_ON);

		return status;

	}



	status = gpio_request(ETH_KS8851_QUART, "quart");

	if (status) {

		pr_err("Cannot request GPIO %d\n", ETH_KS8851_QUART);

		goto error1;

	}



	status = gpio_request(ETH_KS8851_IRQ, "eth_irq");

	if (status) {

		pr_err("Cannot request GPIO %d\n", ETH_KS8851_IRQ);

		goto error2;

	}



	/* Configuration of requested GPIO lines */



	status = gpio_direction_output(ETH_KS8851_POWER_ON, 1);

	if (status) {

		pr_err("Cannot set output GPIO %d\n", ETH_KS8851_IRQ);

		goto error3;

	}



	status = gpio_direction_output(ETH_KS8851_QUART, 1);

	if (status) {

		pr_err("Cannot set output GPIO %d\n", ETH_KS8851_QUART);

		goto error3;

	}



	status = gpio_direction_input(ETH_KS8851_IRQ);

	if (status) {

		pr_err("Cannot set input GPIO %d\n", ETH_KS8851_IRQ);

		goto error3;

	}



	return 0;



error3:

	gpio_free(ETH_KS8851_IRQ);

error2:

	gpio_free(ETH_KS8851_QUART);

error1:

	gpio_free(ETH_KS8851_POWER_ON);

	return status;

}



static struct platform_device sdp4430_lcd_device = {

	.name		= "sdp4430_lcd",

	.id		= -1,
@@ -113,6 +183,8 @@ static struct omap_musb_board_data musb_board_data = { 


static void __init omap_4430sdp_init(void)

{

	int status;



	platform_add_devices(sdp4430_devices, ARRAY_SIZE(sdp4430_devices));

	omap_serial_init();

	/* OMAP4 SDP uses internal transceiver so register nop transceiver */
@@ -120,6 +192,15 @@ static void __init omap_4430sdp_init(void) 
	/* FIXME: allow multi-omap to boot until musb is updated for omap4 */

	if (!cpu_is_omap44xx())

		usb_musb_init(&musb_board_data);



	status = omap_ethernet_init();

	if (status) {

		pr_err("Ethernet initialization failed: %d\n", status);

	} else {

		sdp4430_spi_board_info[0].irq = gpio_to_irq(ETH_KS8851_IRQ);

		spi_register_board_info(sdp4430_spi_board_info,

				ARRAY_SIZE(sdp4430_spi_board_info));

	}

}



static void __init omap_4430sdp_map_io(void)