From: Abraham Arce <x0066660@xxxxxx>
Enable Micrel KS8851 SPI network chip for OMAP4430
Signed-off-by: Abraham Arce <x0066660@xxxxxx>
Signed-off-by: Tony Lindgren <tony@xxxxxxxxxxx>
---
arch/arm/mach-omap2/board-4430sdp.c | 81 +++++++++++++++++++++++++++++++++++
1 files changed, 81 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-omap2/board-4430sdp.c b/arch/arm/mach-omap2/board-4430sdp.c
index b88f28c..be7a786 100644
--- a/arch/arm/mach-omap2/board-4430sdp.c
+++ b/arch/arm/mach-omap2/board-4430sdp.c
@@ -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)
--
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