[ARM] pxa: add initial support for Cogent CSB726 board

Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: Eric Miao <eric.miao@marvell.com>

5 files changed, 355 insertions, 1 deletions

diff --git a/arch/arm/mach-pxa/Kconfig b/arch/arm/mach-pxa/Kconfig
index 33214c1e0607..ff1872db5b3d 100644
--- a/arch/arm/mach-pxa/Kconfig
+++ b/arch/arm/mach-pxa/Kconfig
@@ -393,6 +393,14 @@ config PCM990_DISPLAY_NONE
 
 endchoice
 
+config MACH_CSB726
+	bool "Enable Cogent CSB726 System On a Module"
+	select PXA27x
+	select IWMMXT
+	help
+	  Say Y here if you intend to run this kernel on a Cogent
+	  CSB726 System On Module.
+
 config PXA_EZX
 	bool "Motorola EZX Platform"
 	select PXA27x
diff --git a/arch/arm/mach-pxa/Makefile b/arch/arm/mach-pxa/Makefile
index 361fcfa7531a..96a72f02c136 100644
--- a/arch/arm/mach-pxa/Makefile
+++ b/arch/arm/mach-pxa/Makefile
@@ -75,6 +75,7 @@ obj-$(CONFIG_MACH_CM_X300)      += cm-x300.o
 obj-$(CONFIG_PXA_EZX)           += ezx.o
 
 obj-$(CONFIG_MACH_INTELMOTE2)   += imote2.o
+obj-$(CONFIG_MACH_CSB726)	+= csb726.o
 
 # Support for blinky lights
 led-y := leds.o
diff --git a/arch/arm/mach-pxa/csb726.c b/arch/arm/mach-pxa/csb726.c
new file mode 100644
index 000000000000..2b289f83a61a
--- /dev/null
+++ b/arch/arm/mach-pxa/csb726.c
@@ -0,0 +1,318 @@
+/*
+ *  Support for Cogent CSB726
+ *
+ *  Copyright (c) 2008 Dmitry Eremin-Solenikov
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2 as
+ *  published by the Free Software Foundation.
+ *
+ */
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/gpio.h>
+#include <linux/platform_device.h>
+#include <linux/mtd/physmap.h>
+#include <linux/mtd/partitions.h>
+#include <linux/sm501.h>
+
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+#include <mach/csb726.h>
+#include <mach/mfp-pxa27x.h>
+#include <mach/i2c.h>
+#include <mach/mmc.h>
+#include <mach/ohci.h>
+#include <mach/pxa2xx-regs.h>
+
+#include "generic.h"
+#include "devices.h"
+
+/*
+ * n/a: 2, 5, 6, 7, 8, 23, 24, 25, 26, 27, 87, 88, 89,
+ * nu: 58 -- 77, 90, 91, 93, 102, 105-108, 114-116,
+ * XXX: 21,
+ * XXX: 79 CS_3 for LAN9215 or PSKTSEL on R2, R3
+ * XXX: 33 CS_5 for LAN9215 on R1
+ */
+
+static unsigned long csb726_pin_config[] = {
+	GPIO78_nCS_2, /* EXP_CS */
+	GPIO79_nCS_3, /* SMSC9215 */
+	GPIO80_nCS_4, /* SM501 */
+
+	GPIO52_GPIO, /* #SMSC9251 int */
+	GPIO53_GPIO, /* SM501 int */
+
+	GPIO1_GPIO, /* GPIO0 */
+	GPIO11_GPIO, /* GPIO1 */
+	GPIO9_GPIO, /* GPIO2 */
+	GPIO10_GPIO, /* GPIO3 */
+	GPIO16_PWM0_OUT, /* or GPIO4 */
+	GPIO17_PWM1_OUT, /* or GPIO5 */
+	GPIO94_GPIO, /* GPIO6 */
+	GPIO95_GPIO, /* GPIO7 */
+	GPIO96_GPIO, /* GPIO8 */
+	GPIO97_GPIO, /* GPIO9 */
+	GPIO15_GPIO, /* EXP_IRQ */
+	GPIO18_RDY, /* EXP_WAIT */
+
+	GPIO0_GPIO, /* PWR_INT */
+	GPIO104_GPIO, /* PWR_OFF */
+
+	GPIO12_GPIO, /* touch irq */
+
+	GPIO13_SSP2_TXD,
+	GPIO14_SSP2_SFRM,
+	MFP_CFG_OUT(GPIO19, AF1, DRIVE_LOW),/* SSP2_SYSCLK */
+	GPIO22_SSP2_SCLK,
+
+	GPIO81_SSP3_TXD,
+	GPIO82_SSP3_RXD,
+	GPIO83_SSP3_SFRM,
+	GPIO84_SSP3_SCLK,
+
+	GPIO20_GPIO, /* SDIO int */
+	GPIO32_MMC_CLK,
+	GPIO92_MMC_DAT_0,
+	GPIO109_MMC_DAT_1,
+	GPIO110_MMC_DAT_2,
+	GPIO111_MMC_DAT_3,
+	GPIO112_MMC_CMD,
+	GPIO100_GPIO, /* SD CD */
+	GPIO101_GPIO, /* SD WP */
+
+	GPIO28_AC97_BITCLK,
+	GPIO29_AC97_SDATA_IN_0,
+	GPIO30_AC97_SDATA_OUT,
+	GPIO31_AC97_SYNC,
+	GPIO113_AC97_nRESET,
+
+	GPIO34_FFUART_RXD,
+	GPIO35_FFUART_CTS,
+	GPIO36_FFUART_DCD,
+	GPIO37_FFUART_DSR,
+	GPIO38_FFUART_RI,
+	GPIO39_FFUART_TXD,
+	GPIO40_FFUART_DTR,
+	GPIO41_FFUART_RTS,
+
+	GPIO42_BTUART_RXD,
+	GPIO43_BTUART_TXD,
+	GPIO44_BTUART_CTS,
+	GPIO45_BTUART_RTS,
+
+	GPIO46_STUART_RXD,
+	GPIO47_STUART_TXD,
+
+	GPIO48_nPOE,
+	GPIO49_nPWE,
+	GPIO50_nPIOR,
+	GPIO51_nPIOW,
+	GPIO54_nPCE_2,
+	GPIO55_nPREG,
+	GPIO56_nPWAIT,
+	GPIO57_nIOIS16, /* maybe unused */
+	GPIO85_nPCE_1,
+	GPIO98_GPIO, /* CF IRQ */
+	GPIO99_GPIO, /* CF CD */
+	GPIO103_GPIO, /* Reset */
+
+	GPIO117_I2C_SCL,
+	GPIO118_I2C_SDA,
+};
+
+static struct pxamci_platform_data csb726_mci_data;
+
+static int csb726_mci_init(struct device *dev,
+		irq_handler_t detect, void *data)
+{
+	int err;
+
+	csb726_mci_data.detect_delay = msecs_to_jiffies(500);
+
+	err = gpio_request(CSB726_GPIO_MMC_DETECT, "MMC detect");
+	if (err)
+		goto err_det_req;
+
+	err = gpio_direction_input(CSB726_GPIO_MMC_DETECT);
+	if (err)
+		goto err_det_dir;
+
+	err = gpio_request(CSB726_GPIO_MMC_RO, "MMC ro");
+	if (err)
+		goto err_ro_req;
+
+	err = gpio_direction_input(CSB726_GPIO_MMC_RO);
+	if (err)
+		goto err_ro_dir;
+
+	err = request_irq(gpio_to_irq(CSB726_GPIO_MMC_DETECT), detect,
+			IRQF_DISABLED, "MMC card detect", data);
+	if (err)
+		goto err_irq;
+
+	return 0;
+
+err_irq:
+err_ro_dir:
+	gpio_free(CSB726_GPIO_MMC_RO);
+err_ro_req:
+err_det_dir:
+	gpio_free(CSB726_GPIO_MMC_DETECT);
+err_det_req:
+	return err;
+}
+
+static int csb726_mci_get_ro(struct device *dev)
+{
+	return gpio_get_value(CSB726_GPIO_MMC_RO);
+}
+
+static void csb726_mci_exit(struct device *dev, void *data)
+{
+	free_irq(gpio_to_irq(CSB726_GPIO_MMC_DETECT), data);
+	gpio_free(CSB726_GPIO_MMC_RO);
+	gpio_free(CSB726_GPIO_MMC_DETECT);
+}
+
+static struct pxamci_platform_data csb726_mci = {
+	.ocr_mask	= MMC_VDD_32_33|MMC_VDD_33_34,
+	.init		= csb726_mci_init,
+	.get_ro		= csb726_mci_get_ro,
+	/* FIXME setpower */
+	.exit		= csb726_mci_exit,
+};
+
+static struct pxaohci_platform_data csb726_ohci_platform_data = {
+	.port_mode	= PMM_NPS_MODE,
+	.flags		= ENABLE_PORT1 | NO_OC_PROTECTION,
+};
+
+static struct mtd_partition csb726_flash_partitions[] = {
+	{
+		.name		= "Bootloader",
+		.offset		= 0,
+		.size		= CSB726_FLASH_uMON,
+		.mask_flags	= MTD_WRITEABLE  /* force read-only */
+	},
+	{
+		.name		= "root",
+		.offset		= MTDPART_OFS_APPEND,
+		.size		= MTDPART_SIZ_FULL,
+	}
+};
+
+static struct physmap_flash_data csb726_flash_data = {
+	.width		= 2,
+	.parts		= csb726_flash_partitions,
+	.nr_parts	= ARRAY_SIZE(csb726_flash_partitions),
+};
+
+static struct resource csb726_flash_resources[] = {
+	{
+		.start          = PXA_CS0_PHYS,
+		.end            = PXA_CS0_PHYS + CSB726_FLASH_SIZE - 1 ,
+		.flags          = IORESOURCE_MEM,
+	}
+};
+
+static struct platform_device csb726_flash = {
+	.name           = "physmap-flash",
+	.dev            = {
+		.platform_data  = &csb726_flash_data,
+	},
+	.resource       = csb726_flash_resources,
+	.num_resources  = ARRAY_SIZE(csb726_flash_resources),
+};
+
+static struct resource csb726_sm501_resources[] = {
+	{
+		.start          = PXA_CS4_PHYS,
+		.end            = PXA_CS4_PHYS + SZ_8M - 1,
+		.flags          = IORESOURCE_MEM,
+		.name		= "sm501-localmem",
+	},
+	{
+		.start          = PXA_CS4_PHYS + SZ_64M - SZ_2M,
+		.end            = PXA_CS4_PHYS + SZ_64M - 1,
+		.flags          = IORESOURCE_MEM,
+		.name		= "sm501-regs",
+	},
+	{
+		.start		= CSB726_IRQ_SM501,
+		.end		= CSB726_IRQ_SM501,
+		.flags		= IORESOURCE_IRQ,
+	},
+};
+
+static struct sm501_initdata csb726_sm501_initdata = {
+/*	.devices	= SM501_USE_USB_HOST, */
+	.devices	= SM501_USE_USB_HOST | SM501_USE_UART0 | SM501_USE_UART1,
+};
+
+static struct sm501_platdata csb726_sm501_platdata = {
+	.init		= &csb726_sm501_initdata,
+};
+
+static struct platform_device csb726_sm501 = {
+	.name		= "sm501",
+	.id		= 0,
+	.num_resources	= ARRAY_SIZE(csb726_sm501_resources),
+	.resource	= csb726_sm501_resources,
+	.dev		= {
+		.platform_data = &csb726_sm501_platdata,
+	},
+};
+
+static struct resource csb726_lan_resources[] = {
+	{
+		.start	= PXA_CS3_PHYS,
+		.end	= PXA_CS3_PHYS + SZ_64K - 1,
+		.flags	= IORESOURCE_MEM,
+	},
+	{
+		.start	= CSB726_IRQ_LAN,
+		.end	= CSB726_IRQ_LAN,
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+static struct platform_device csb726_lan = {
+	.name		= "smc911x",
+	.id		= -1,
+	.num_resources	= ARRAY_SIZE(csb726_lan_resources),
+	.resource	= csb726_lan_resources,
+};
+
+static struct platform_device *devices[] __initdata = {
+	&csb726_flash,
+	&csb726_sm501,
+	&csb726_lan,
+};
+
+static void __init csb726_init(void)
+{
+	pxa2xx_mfp_config(ARRAY_AND_SIZE(csb726_pin_config));
+/*	MSC1 = 0x7ffc3ffc; *//* LAN9215/EXP_CS */
+/*	MSC2 = 0x06697ff4; *//* none/SM501 */
+	MSC2 = (MSC2 & ~0xffff) | 0x7ff4; /* SM501 */
+
+	pxa_set_i2c_info(NULL);
+	pxa27x_set_i2c_power_info(NULL);
+	pxa_set_mci_info(&csb726_mci);
+	pxa_set_ohci_info(&csb726_ohci_platform_data);
+
+	platform_add_devices(devices, ARRAY_SIZE(devices));
+}
+
+MACHINE_START(CSB726, "Cogent CSB726")
+	.phys_io	= 0x40000000,
+	.boot_params	= 0xa0000100,
+	.io_pg_offst	= (io_p2v(0x40000000) >> 18) & 0xfffc,
+	.map_io         = pxa_map_io,
+	.init_irq       = pxa27x_init_irq,
+	.init_machine   = csb726_init,
+	.timer          = &pxa_timer,
+MACHINE_END
diff --git a/arch/arm/mach-pxa/include/mach/csb726.h b/arch/arm/mach-pxa/include/mach/csb726.h
new file mode 100644
index 000000000000..747ab1a71f2f
--- /dev/null
+++ b/arch/arm/mach-pxa/include/mach/csb726.h
@@ -0,0 +1,26 @@
+/*
+ *  Support for Cogent CSB726
+ *
+ *  Copyright (c) 2008 Dmitry Baryshkov
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2 as
+ *  published by the Free Software Foundation.
+ *
+ */
+#ifndef CSB726_H
+#define CSB726_H
+
+#define CSB726_GPIO_IRQ_LAN	52
+#define CSB726_GPIO_IRQ_SM501	53
+#define CSB726_GPIO_MMC_DETECT	100
+#define CSB726_GPIO_MMC_RO	101
+
+#define CSB726_FLASH_SIZE	(64 * 1024 * 1024)
+#define CSB726_FLASH_uMON	(8 * 1024 * 1024)
+
+#define CSB726_IRQ_LAN		gpio_to_irq(CSB726_GPIO_IRQ_LAN)
+#define CSB726_IRQ_SM501	gpio_to_irq(CSB726_GPIO_IRQ_SM501)
+
+#endif
+
diff --git a/arch/arm/mach-pxa/include/mach/uncompress.h b/arch/arm/mach-pxa/include/mach/uncompress.h
index f4b029c03957..5706cea95d11 100644
--- a/arch/arm/mach-pxa/include/mach/uncompress.h
+++ b/arch/arm/mach-pxa/include/mach/uncompress.h
@@ -35,7 +35,8 @@ static inline void flush(void)
 
 static inline void arch_decomp_setup(void)
 {
-	if (machine_is_littleton() || machine_is_intelmote2())
+	if (machine_is_littleton() || machine_is_intelmote2()
+			|| machine_is_csb726())
 		UART = STUART;
 }