X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=arch%2Farm%2Fmach-kirkwood%2Fopenrd-setup.c;h=c9d77fad10ab854a517f78ec7c01adc35cf85c76;hb=b9da0571050c09863e59f94d0b8594a290d61b88;hp=fd06be6188159da478ba8311dbec6f6b167e3df9;hpb=608307e6de2631e37f55f106a7cbbc560cb12751;p=pandora-kernel.git

diff --git a/arch/arm/mach-kirkwood/openrd-setup.c b/arch/arm/mach-kirkwood/openrd-setup.c
index fd06be618815..c9d77fad10ab 100644
--- a/arch/arm/mach-kirkwood/openrd-setup.c
+++ b/arch/arm/mach-kirkwood/openrd-setup.c
@@ -16,6 +16,7 @@
 #include <linux/ata_platform.h>
 #include <linux/mv643xx_eth.h>
 #include <linux/i2c.h>
+#include <linux/gpio.h>
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
 #include <mach/kirkwood.h>
@@ -57,7 +58,22 @@ static struct mvsdio_platform_data openrd_mvsdio_data = {
 };
 
 static unsigned int openrd_mpp_config[] __initdata = {
+	MPP12_SD_CLK,
+	MPP13_SD_CMD,
+	MPP14_SD_D0,
+	MPP15_SD_D1,
+	MPP16_SD_D2,
+	MPP17_SD_D3,
+	MPP28_GPIO,
 	MPP29_GPIO,
+	MPP34_GPIO,
+	0
+};
+
+/* Configure MPP for UART1 */
+static unsigned int openrd_uart1_mpp_config[] __initdata = {
+	MPP13_UART1_TXD,
+	MPP14_UART1_RXD,
 	0
 };
 
@@ -67,6 +83,68 @@ static struct i2c_board_info i2c_board_info[] __initdata = {
 	},
 };
 
+static int __initdata uart1;
+
+static int __init sd_uart_selection(char *str)
+{
+	uart1 = -EINVAL;
+
+	/* Default is SD. Change if required, for UART */
+	if (!str)
+		return 0;
+
+	if (!strncmp(str, "232", 3)) {
+		uart1 = 232;
+	} else if (!strncmp(str, "485", 3)) {
+		/* OpenRD-Base doesn't have RS485. Treat is as an
+		 * unknown argument & just have default setting -
+		 * which is SD */
+		if (machine_is_openrd_base()) {
+			uart1 = -ENODEV;
+			return 1;
+		}
+
+		uart1 = 485;
+	}
+	return 1;
+}
+/* Parse boot_command_line string kw_openrd_init_uart1=232/485 */
+__setup("kw_openrd_init_uart1=", sd_uart_selection);
+
+static int __init uart1_mpp_config(void)
+{
+	kirkwood_mpp_conf(openrd_uart1_mpp_config);
+
+	if (gpio_request(34, "SD_UART1_SEL")) {
+		printk(KERN_ERR "GPIO request failed for SD/UART1 selection"
+				", gpio: 34\n");
+		return -EIO;
+	}
+
+	if (gpio_request(28, "RS232_RS485_SEL")) {
+		printk(KERN_ERR "GPIO request failed for RS232/RS485 selection"
+				", gpio# 28\n");
+		gpio_free(34);
+		return -EIO;
+	}
+
+	/* Select UART1
+	 * Pin # 34: 0 => UART1, 1 => SD */
+	gpio_direction_output(34, 0);
+
+	/* Select RS232 OR RS485
+	 * Pin # 28: 0 => RS232, 1 => RS485 */
+	if (uart1 == 232)
+		gpio_direction_output(28, 0);
+	else
+		gpio_direction_output(28, 1);
+
+	gpio_free(34);
+	gpio_free(28);
+
+	return 0;
+}
+
 static void __init openrd_init(void)
 {
 	/*
@@ -90,7 +168,6 @@ static void __init openrd_init(void)
 		kirkwood_ge01_init(&openrd_ge01_data);
 
 	kirkwood_sata_init(&openrd_sata_data);
-	kirkwood_sdio_init(&openrd_mvsdio_data);
 
 	kirkwood_i2c_init();
 
@@ -99,6 +176,28 @@ static void __init openrd_init(void)
 			ARRAY_SIZE(i2c_board_info));
 		kirkwood_audio_init();
 	}
+
+	if (uart1 <= 0) {
+		if (uart1 < 0)
+			printk(KERN_ERR "Invalid kernel parameter to select "
+				"UART1. Defaulting to SD. ERROR CODE: %d\n",
+				uart1);
+
+		/* Select SD
+		 * Pin # 34: 0 => UART1, 1 => SD */
+		if (gpio_request(34, "SD_UART1_SEL")) {
+			printk(KERN_ERR "GPIO request failed for SD/UART1 "
+					"selection, gpio: 34\n");
+		} else {
+
+			gpio_direction_output(34, 1);
+			gpio_free(34);
+			kirkwood_sdio_init(&openrd_mvsdio_data);
+		}
+	} else {
+		if (!uart1_mpp_config())
+			kirkwood_uart1_init();
+	}
 }
 
 static int __init openrd_pci_init(void)
@@ -115,8 +214,6 @@ subsys_initcall(openrd_pci_init);
 #ifdef CONFIG_MACH_OPENRD_BASE
 MACHINE_START(OPENRD_BASE, "Marvell OpenRD Base Board")
 	/* Maintainer: Dhaval Vasa <dhaval.vasa@einfochips.com> */
-	.phys_io	= KIRKWOOD_REGS_PHYS_BASE,
-	.io_pg_offst	= ((KIRKWOOD_REGS_VIRT_BASE) >> 18) & 0xfffc,
 	.boot_params	= 0x00000100,
 	.init_machine	= openrd_init,
 	.map_io		= kirkwood_map_io,
@@ -128,8 +225,6 @@ MACHINE_END
 #ifdef CONFIG_MACH_OPENRD_CLIENT
 MACHINE_START(OPENRD_CLIENT, "Marvell OpenRD Client Board")
 	/* Maintainer: Dhaval Vasa <dhaval.vasa@einfochips.com> */
-	.phys_io	= KIRKWOOD_REGS_PHYS_BASE,
-	.io_pg_offst	= ((KIRKWOOD_REGS_VIRT_BASE) >> 18) & 0xfffc,
 	.boot_params	= 0x00000100,
 	.init_machine	= openrd_init,
 	.map_io		= kirkwood_map_io,
@@ -141,8 +236,6 @@ MACHINE_END
 #ifdef CONFIG_MACH_OPENRD_ULTIMATE
 MACHINE_START(OPENRD_ULTIMATE, "Marvell OpenRD Ultimate Board")
 	/* Maintainer: Dhaval Vasa <dhaval.vasa@einfochips.com> */
-	.phys_io	= KIRKWOOD_REGS_PHYS_BASE,
-	.io_pg_offst	= ((KIRKWOOD_REGS_VIRT_BASE) >> 18) & 0xfffc,
 	.boot_params	= 0x00000100,
 	.init_machine	= openrd_init,
 	.map_io		= kirkwood_map_io,