ARM: OMAP3: Add basic support for Pandora handheld console

This patch adds support for basic features: uarts, i2c,
and rtc. Also includes defconfig.

Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

1 files changed, 180 insertions, 0 deletions

diff --git a/arch/arm/mach-omap2/board-omap3pandora.c b/arch/arm/mach-omap2/board-omap3pandora.c
new file mode 100644
index 000000000000..7236c7be05b3
--- /dev/null
+++ b/arch/arm/mach-omap2/board-omap3pandora.c
@@ -0,0 +1,180 @@
+/*
+ * board-omap3pandora.c (Pandora Handheld Console)
+ *
+ * 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/init.h>
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+
+#include <linux/spi/spi.h>
+#include <linux/spi/ads7846.h>
+#include <linux/i2c/twl4030.h>
+
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+
+#include <mach/board.h>
+#include <mach/common.h>
+#include <mach/gpio.h>
+#include <mach/hardware.h>
+#include <mach/mcspi.h>
+
+#define OMAP3_PANDORA_TS_GPIO           94
+
+static struct omap_uart_config omap3pandora_uart_config __initdata = {
+        .enabled_uarts  = (1 << 2), /* UART3 */
+};
+
+static struct twl4030_gpio_platform_data omap3pandora_gpio_data = {
+        .gpio_base      = OMAP_MAX_GPIO_LINES,
+        .irq_base       = TWL4030_GPIO_IRQ_BASE,
+        .irq_end        = TWL4030_GPIO_IRQ_END,
+};
+
+static struct twl4030_usb_data omap3pandora_usb_data = {
+        .usb_mode       = T2_USB_MODE_ULPI,
+};
+
+static struct twl4030_platform_data omap3pandora_twldata = {
+        .irq_base       = TWL4030_IRQ_BASE,
+        .irq_end        = TWL4030_IRQ_END,
+        .gpio           = &omap3pandora_gpio_data,
+        .usb            = &omap3pandora_usb_data,
+};
+
+static struct i2c_board_info __initdata omap3pandora_i2c_boardinfo[] = {
+        {
+                I2C_BOARD_INFO("tps65950", 0x48),
+                .flags = I2C_CLIENT_WAKE,
+                .irq = INT_34XX_SYS_NIRQ,
+                .platform_data = &omap3pandora_twldata,
+        },
+};
+
+static int __init omap3pandora_i2c_init(void)
+{
+        omap_register_i2c_bus(1, 2600, omap3pandora_i2c_boardinfo,
+                        ARRAY_SIZE(omap3pandora_i2c_boardinfo));
+        /* i2c2 pins are not connected */
+        omap_register_i2c_bus(3, 400, NULL, 0);
+        return 0;
+}
+
+static void __init omap3pandora_init_irq(void)
+{
+        omap2_init_common_hw();
+        omap_init_irq();
+        omap_gpio_init();
+}
+
+static void __init omap3pandora_ads7846_init(void)
+{
+        int gpio = OMAP3_PANDORA_TS_GPIO;
+        int ret;
+
+        ret = gpio_request(gpio, "ads7846_pen_down");
+        if (ret < 0) {
+                printk(KERN_ERR "Failed to request GPIO %d for "
+                                "ads7846 pen down IRQ\n", gpio);
+                return;
+        }
+
+        gpio_direction_input(gpio);
+}
+
+static int ads7846_get_pendown_state(void)
+{
+        return !gpio_get_value(OMAP3_PANDORA_TS_GPIO);
+}
+
+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 omap2_mcspi_device_config ads7846_mcspi_config = {
+        .turbo_mode     = 0,
+        .single_channel = 1,    /* 0: slave, 1: master */
+};
+
+static struct spi_board_info omap3pandora_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(OMAP3_PANDORA_TS_GPIO),
+                .platform_data          = &ads7846_config,
+        }
+};
+
+static struct platform_device omap3pandora_lcd_device = {
+        .name           = "pandora_lcd",
+        .id             = -1,
+};
+
+static struct omap_lcd_config omap3pandora_lcd_config __initdata = {
+        .ctrl_name      = "internal",
+};
+
+static struct omap_board_config_kernel omap3pandora_config[] __initdata = {
+        { OMAP_TAG_UART,        &omap3pandora_uart_config },
+        { OMAP_TAG_LCD,         &omap3pandora_lcd_config },
+};
+
+static struct platform_device *omap3pandora_devices[] __initdata = {
+        &omap3pandora_lcd_device,
+};
+
+static void __init omap3pandora_init(void)
+{
+        omap3pandora_i2c_init();
+        platform_add_devices(omap3pandora_devices,
+                        ARRAY_SIZE(omap3pandora_devices));
+        omap_board_config = omap3pandora_config;
+        omap_board_config_size = ARRAY_SIZE(omap3pandora_config);
+        omap_serial_init();
+        spi_register_board_info(omap3pandora_spi_board_info,
+                        ARRAY_SIZE(omap3pandora_spi_board_info));
+        omap3pandora_ads7846_init();
+}
+
+static void __init omap3pandora_map_io(void)
+{
+        omap2_set_globals_343x();
+        omap2_map_common_io();
+}
+
+MACHINE_START(OMAP3_PANDORA, "Pandora Handheld Console")
+        .phys_io        = 0x48000000,
+        .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
+        .boot_params    = 0x80000100,
+        .map_io         = omap3pandora_map_io,
+        .init_irq       = omap3pandora_init_irq,
+        .init_machine   = omap3pandora_init,
+        .timer          = &omap_timer,
+MACHINE_END