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linux/arch/arm/mach-omap2/board-overo.c
Steve Sakoman 172ef27544 ARM: Add SMSC911X support to Overo platform (V2) 
Gumstix will soon be shipping a variant of their Summit board that
includes an SMSC LAN9221 ethernet interface.  This patch provides
support via the smsc911x driver when enabled in kernel config.

The Overo defconfig is not updated since the LAN9221 is an option
not present on all systems.

Signed-off-by: Steve Sakoman <steve@sakoman.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Acked-by: Steve Glendinning <steve.glendinning@smsc.com>
2009-04-02 18:32:28 +01:00

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/*
* board-overo.c (Gumstix Overo)
*
* Initial code: Steve Sakoman <steve@sakoman.com>
*
* 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.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*
*/
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/err.h>
#include <linux/init.h>
#include <linux/io.h>
#include <linux/kernel.h>
#include <linux/platform_device.h>
#include <linux/i2c/twl4030.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/nand.h>
#include <linux/mtd/partitions.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/flash.h>
#include <asm/mach/map.h>
#include <mach/board.h>
#include <mach/common.h>
#include <mach/gpio.h>
#include <mach/gpmc.h>
#include <mach/hardware.h>
#include <mach/nand.h>
#include <mach/usb.h>
#include "mmc-twl4030.h"
#define OVERO_GPIO_BT_XGATE 15
#define OVERO_GPIO_W2W_NRESET 16
#define OVERO_GPIO_BT_NRESET 164
#define OVERO_GPIO_USBH_CPEN 168
#define OVERO_GPIO_USBH_NRESET 183
#define NAND_BLOCK_SIZE SZ_128K
#define GPMC_CS0_BASE 0x60
#define GPMC_CS_SIZE 0x30
#define OVERO_SMSC911X_CS 5
#define OVERO_SMSC911X_GPIO 176
#if defined(CONFIG_TOUCHSCREEN_ADS7846) || \
defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
#include <mach/mcspi.h>
#include <linux/spi/spi.h>
#include <linux/spi/ads7846.h>
static struct omap2_mcspi_device_config ads7846_mcspi_config = {
.turbo_mode = 0,
.single_channel = 1, /* 0: slave, 1: master */
};
static int ads7846_get_pendown_state(void)
{
return !gpio_get_value(OVERO_GPIO_PENDOWN);
}
static struct ads7846_platform_data ads7846_config = {
.x_max = 0x0fff,
.y_max = 0x0fff,
.x_plate_ohms = 180,
.pressure_max = 255,
.debounce_max = 10,
.debounce_tol = 3,
.debounce_rep = 1,
.get_pendown_state = ads7846_get_pendown_state,
.keep_vref_on = 1,
};
static struct spi_board_info overo_spi_board_info[] __initdata = {
{
.modalias = "ads7846",
.bus_num = 1,
.chip_select = 0,
.max_speed_hz = 1500000,
.controller_data = &ads7846_mcspi_config,
.irq = OMAP_GPIO_IRQ(OVERO_GPIO_PENDOWN),
.platform_data = &ads7846_config,
}
};
static void __init overo_ads7846_init(void)
{
if ((gpio_request(OVERO_GPIO_PENDOWN, "ADS7846_PENDOWN") == 0) &&
(gpio_direction_input(OVERO_GPIO_PENDOWN) == 0)) {
gpio_export(OVERO_GPIO_PENDOWN, 0);
} else {
printk(KERN_ERR "could not obtain gpio for ADS7846_PENDOWN\n");
return;
}
spi_register_board_info(overo_spi_board_info,
ARRAY_SIZE(overo_spi_board_info));
}
#else
static inline void __init overo_ads7846_init(void) { return; }
#endif
#if defined(CONFIG_SMSC911X) || defined(CONFIG_SMSC911X_MODULE)
#include <linux/smsc911x.h>
static struct resource overo_smsc911x_resources[] = {
{
.name = "smsc911x-memory",
.flags = IORESOURCE_MEM,
},
{
.flags = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
},
};
static struct smsc911x_platform_config overo_smsc911x_config = {
.irq_polarity = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
.irq_type = SMSC911X_IRQ_TYPE_OPEN_DRAIN,
.flags = SMSC911X_USE_32BIT ,
.phy_interface = PHY_INTERFACE_MODE_MII,
};
static struct platform_device overo_smsc911x_device = {
.name = "smsc911x",
.id = -1,
.num_resources = ARRAY_SIZE(overo_smsc911x_resources),
.resource = &overo_smsc911x_resources,
.dev = {
.platform_data = &overo_smsc911x_config,
},
};
static inline void __init overo_init_smsc911x(void)
{
unsigned long cs_mem_base;
if (gpmc_cs_request(OVERO_SMSC911X_CS, SZ_16M, &cs_mem_base) < 0) {
printk(KERN_ERR "Failed request for GPMC mem for smsc911x\n");
return;
}
overo_smsc911x_resources[0].start = cs_mem_base + 0x0;
overo_smsc911x_resources[0].end = cs_mem_base + 0xff;
if ((gpio_request(OVERO_SMSC911X_GPIO, "SMSC911X IRQ") == 0) &&
(gpio_direction_input(OVERO_SMSC911X_GPIO) == 0)) {
gpio_export(OVERO_SMSC911X_GPIO, 0);
} else {
printk(KERN_ERR "could not obtain gpio for SMSC911X IRQ\n");
return;
}
overo_smsc911x_resources[1].start = OMAP_GPIO_IRQ(OVERO_SMSC911X_GPIO);
overo_smsc911x_resources[1].end = 0;
platform_device_register(&overo_smsc911x_device);
}
#else
static inline void __init overo_init_smsc911x(void) { return; }
#endif
static struct mtd_partition overo_nand_partitions[] = {
{
.name = "xloader",
.offset = 0, /* Offset = 0x00000 */
.size = 4 * NAND_BLOCK_SIZE,
.mask_flags = MTD_WRITEABLE
},
{
.name = "uboot",
.offset = MTDPART_OFS_APPEND, /* Offset = 0x80000 */
.size = 14 * NAND_BLOCK_SIZE,
},
{
.name = "uboot environment",
.offset = MTDPART_OFS_APPEND, /* Offset = 0x240000 */
.size = 2 * NAND_BLOCK_SIZE,
},
{
.name = "linux",
.offset = MTDPART_OFS_APPEND, /* Offset = 0x280000 */
.size = 32 * NAND_BLOCK_SIZE,
},
{
.name = "rootfs",
.offset = MTDPART_OFS_APPEND, /* Offset = 0x680000 */
.size = MTDPART_SIZ_FULL,
},
};
static struct omap_nand_platform_data overo_nand_data = {
.parts = overo_nand_partitions,
.nr_parts = ARRAY_SIZE(overo_nand_partitions),
.dma_channel = -1, /* disable DMA in OMAP NAND driver */
};
static struct resource overo_nand_resource = {
.flags = IORESOURCE_MEM,
};
static struct platform_device overo_nand_device = {
.name = "omap2-nand",
.id = -1,
.dev = {
.platform_data = &overo_nand_data,
},
.num_resources = 1,
.resource = &overo_nand_resource,
};
static void __init overo_flash_init(void)
{
u8 cs = 0;
u8 nandcs = GPMC_CS_NUM + 1;
u32 gpmc_base_add = OMAP34XX_GPMC_VIRT;
/* find out the chip-select on which NAND exists */
while (cs < GPMC_CS_NUM) {
u32 ret = 0;
ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1);
if ((ret & 0xC00) == 0x800) {
printk(KERN_INFO "Found NAND on CS%d\n", cs);
if (nandcs > GPMC_CS_NUM)
nandcs = cs;
}
cs++;
}
if (nandcs > GPMC_CS_NUM) {
printk(KERN_INFO "NAND: Unable to find configuration "
"in GPMC\n ");
return;
}
if (nandcs < GPMC_CS_NUM) {
overo_nand_data.cs = nandcs;
overo_nand_data.gpmc_cs_baseaddr = (void *)
(gpmc_base_add + GPMC_CS0_BASE + nandcs * GPMC_CS_SIZE);
overo_nand_data.gpmc_baseaddr = (void *) (gpmc_base_add);
printk(KERN_INFO "Registering NAND on CS%d\n", nandcs);
if (platform_device_register(&overo_nand_device) < 0)
printk(KERN_ERR "Unable to register NAND device\n");
}
}
static struct omap_uart_config overo_uart_config __initdata = {
.enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
};
static struct twl4030_gpio_platform_data overo_gpio_data = {
.gpio_base = OMAP_MAX_GPIO_LINES,
.irq_base = TWL4030_GPIO_IRQ_BASE,
.irq_end = TWL4030_GPIO_IRQ_END,
};
static struct twl4030_platform_data overo_twldata = {
.irq_base = TWL4030_IRQ_BASE,
.irq_end = TWL4030_IRQ_END,
.gpio = &overo_gpio_data,
};
static struct i2c_board_info __initdata overo_i2c_boardinfo[] = {
{
I2C_BOARD_INFO("twl4030", 0x48),
.flags = I2C_CLIENT_WAKE,
.irq = INT_34XX_SYS_NIRQ,
.platform_data = &overo_twldata,
},
};
static int __init overo_i2c_init(void)
{
omap_register_i2c_bus(1, 2600, overo_i2c_boardinfo,
ARRAY_SIZE(overo_i2c_boardinfo));
/* i2c2 pins are used for gpio */
omap_register_i2c_bus(3, 400, NULL, 0);
return 0;
}
static void __init overo_init_irq(void)
{
omap2_init_common_hw(NULL);
omap_init_irq();
omap_gpio_init();
}
static struct platform_device overo_lcd_device = {
.name = "overo_lcd",
.id = -1,
};
static struct omap_lcd_config overo_lcd_config __initdata = {
.ctrl_name = "internal",
};
static struct omap_board_config_kernel overo_config[] __initdata = {
{ OMAP_TAG_UART, &overo_uart_config },
{ OMAP_TAG_LCD, &overo_lcd_config },
};
static struct platform_device *overo_devices[] __initdata = {
&overo_lcd_device,
};
static struct twl4030_hsmmc_info mmc[] __initdata = {
{
.mmc = 1,
.wires = 4,
.gpio_cd = -EINVAL,
.gpio_wp = -EINVAL,
},
{
.mmc = 2,
.wires = 4,
.gpio_cd = -EINVAL,
.gpio_wp = -EINVAL,
.transceiver = true,
},
{} /* Terminator */
};
static void __init overo_init(void)
{
overo_i2c_init();
platform_add_devices(overo_devices, ARRAY_SIZE(overo_devices));
omap_board_config = overo_config;
omap_board_config_size = ARRAY_SIZE(overo_config);
omap_serial_init();
twl4030_mmc_init(mmc);
overo_flash_init();
usb_musb_init();
overo_ads7846_init();
overo_init_smsc911x();
if ((gpio_request(OVERO_GPIO_W2W_NRESET,
"OVERO_GPIO_W2W_NRESET") == 0) &&
(gpio_direction_output(OVERO_GPIO_W2W_NRESET, 1) == 0)) {
gpio_export(OVERO_GPIO_W2W_NRESET, 0);
gpio_set_value(OVERO_GPIO_W2W_NRESET, 0);
udelay(10);
gpio_set_value(OVERO_GPIO_W2W_NRESET, 1);
} else {
printk(KERN_ERR "could not obtain gpio for "
"OVERO_GPIO_W2W_NRESET\n");
}
if ((gpio_request(OVERO_GPIO_BT_XGATE, "OVERO_GPIO_BT_XGATE") == 0) &&
(gpio_direction_output(OVERO_GPIO_BT_XGATE, 0) == 0))
gpio_export(OVERO_GPIO_BT_XGATE, 0);
else
printk(KERN_ERR "could not obtain gpio for OVERO_GPIO_BT_XGATE\n");
if ((gpio_request(OVERO_GPIO_BT_NRESET, "OVERO_GPIO_BT_NRESET") == 0) &&
(gpio_direction_output(OVERO_GPIO_BT_NRESET, 1) == 0)) {
gpio_export(OVERO_GPIO_BT_NRESET, 0);
gpio_set_value(OVERO_GPIO_BT_NRESET, 0);
mdelay(6);
gpio_set_value(OVERO_GPIO_BT_NRESET, 1);
} else {
printk(KERN_ERR "could not obtain gpio for "
"OVERO_GPIO_BT_NRESET\n");
}
if ((gpio_request(OVERO_GPIO_USBH_CPEN, "OVERO_GPIO_USBH_CPEN") == 0) &&
(gpio_direction_output(OVERO_GPIO_USBH_CPEN, 1) == 0))
gpio_export(OVERO_GPIO_USBH_CPEN, 0);
else
printk(KERN_ERR "could not obtain gpio for "
"OVERO_GPIO_USBH_CPEN\n");
if ((gpio_request(OVERO_GPIO_USBH_NRESET,
"OVERO_GPIO_USBH_NRESET") == 0) &&
(gpio_direction_output(OVERO_GPIO_USBH_NRESET, 1) == 0))
gpio_export(OVERO_GPIO_USBH_NRESET, 0);
else
printk(KERN_ERR "could not obtain gpio for "
"OVERO_GPIO_USBH_NRESET\n");
}
static void __init overo_map_io(void)
{
omap2_set_globals_343x();
omap2_map_common_io();
}
MACHINE_START(OVERO, "Gumstix Overo")
.phys_io = 0x48000000,
.io_pg_offst = ((0xd8000000) >> 18) & 0xfffc,
.boot_params = 0x80000100,
.map_io = overo_map_io,
.init_irq = overo_init_irq,
.init_machine = overo_init,
.timer = &omap_timer,
MACHINE_END
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