summaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-davinci/board-dm646x-evm.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/mach-davinci/board-dm646x-evm.c')
-rw-r--r--arch/arm/mach-davinci/board-dm646x-evm.c262
1 files changed, 262 insertions, 0 deletions
diff --git a/arch/arm/mach-davinci/board-dm646x-evm.c b/arch/arm/mach-davinci/board-dm646x-evm.c
new file mode 100644
index 000000000000..e17de6352624
--- /dev/null
+++ b/arch/arm/mach-davinci/board-dm646x-evm.c
@@ -0,0 +1,262 @@
+/*
+ * TI DaVinci DM646X EVM board
+ *
+ * Derived from: arch/arm/mach-davinci/board-evm.c
+ * Copyright (C) 2006 Texas Instruments.
+ *
+ * (C) 2007-2008, MontaVista Software, Inc.
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2. This program is licensed "as is" without any warranty of any
+ * kind, whether express or implied.
+ *
+ */
+
+/**************************************************************************
+ * Included Files
+ **************************************************************************/
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/fs.h>
+#include <linux/major.h>
+#include <linux/root_dev.h>
+#include <linux/dma-mapping.h>
+#include <linux/serial.h>
+#include <linux/serial_8250.h>
+#include <linux/leds.h>
+#include <linux/gpio.h>
+#include <linux/io.h>
+#include <linux/platform_device.h>
+#include <linux/i2c.h>
+#include <linux/i2c/at24.h>
+#include <linux/i2c/pcf857x.h>
+#include <linux/etherdevice.h>
+
+#include <asm/setup.h>
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/flash.h>
+
+#include <mach/dm646x.h>
+#include <mach/common.h>
+#include <mach/psc.h>
+#include <mach/serial.h>
+#include <mach/i2c.h>
+#include <mach/mmc.h>
+#include <mach/emac.h>
+#include <mach/common.h>
+
+#define DM646X_EVM_PHY_MASK (0x2)
+#define DM646X_EVM_MDIO_FREQUENCY (2200000) /* PHY bus frequency */
+
+static struct davinci_uart_config uart_config __initdata = {
+ .enabled_uarts = (1 << 0),
+};
+
+/* LEDS */
+
+static struct gpio_led evm_leds[] = {
+ { .name = "DS1", .active_low = 1, },
+ { .name = "DS2", .active_low = 1, },
+ { .name = "DS3", .active_low = 1, },
+ { .name = "DS4", .active_low = 1, },
+};
+
+static __initconst struct gpio_led_platform_data evm_led_data = {
+ .num_leds = ARRAY_SIZE(evm_leds),
+ .leds = evm_leds,
+};
+
+static struct platform_device *evm_led_dev;
+
+static int evm_led_setup(struct i2c_client *client, int gpio,
+ unsigned int ngpio, void *c)
+{
+ struct gpio_led *leds = evm_leds;
+ int status;
+
+ while (ngpio--) {
+ leds->gpio = gpio++;
+ leds++;
+ };
+
+ evm_led_dev = platform_device_alloc("leds-gpio", 0);
+ platform_device_add_data(evm_led_dev, &evm_led_data,
+ sizeof(evm_led_data));
+
+ evm_led_dev->dev.parent = &client->dev;
+ status = platform_device_add(evm_led_dev);
+ if (status < 0) {
+ platform_device_put(evm_led_dev);
+ evm_led_dev = NULL;
+ }
+ return status;
+}
+
+static int evm_led_teardown(struct i2c_client *client, int gpio,
+ unsigned ngpio, void *c)
+{
+ if (evm_led_dev) {
+ platform_device_unregister(evm_led_dev);
+ evm_led_dev = NULL;
+ }
+ return 0;
+}
+
+static int evm_sw_gpio[4] = { -EINVAL, -EINVAL, -EINVAL, -EINVAL };
+
+static int evm_sw_setup(struct i2c_client *client, int gpio,
+ unsigned ngpio, void *c)
+{
+ int status;
+ int i;
+ char label[10];
+
+ for (i = 0; i < 4; ++i) {
+ snprintf(label, 10, "user_sw%d", i);
+ status = gpio_request(gpio, label);
+ if (status)
+ goto out_free;
+ evm_sw_gpio[i] = gpio++;
+
+ status = gpio_direction_input(evm_sw_gpio[i]);
+ if (status) {
+ gpio_free(evm_sw_gpio[i]);
+ evm_sw_gpio[i] = -EINVAL;
+ goto out_free;
+ }
+
+ status = gpio_export(evm_sw_gpio[i], 0);
+ if (status) {
+ gpio_free(evm_sw_gpio[i]);
+ evm_sw_gpio[i] = -EINVAL;
+ goto out_free;
+ }
+ }
+ return status;
+out_free:
+ for (i = 0; i < 4; ++i) {
+ if (evm_sw_gpio[i] != -EINVAL) {
+ gpio_free(evm_sw_gpio[i]);
+ evm_sw_gpio[i] = -EINVAL;
+ }
+ }
+ return status;
+}
+
+static int evm_sw_teardown(struct i2c_client *client, int gpio,
+ unsigned ngpio, void *c)
+{
+ int i;
+
+ for (i = 0; i < 4; ++i) {
+ if (evm_sw_gpio[i] != -EINVAL) {
+ gpio_unexport(evm_sw_gpio[i]);
+ gpio_free(evm_sw_gpio[i]);
+ evm_sw_gpio[i] = -EINVAL;
+ }
+ }
+ return 0;
+}
+
+static int evm_pcf_setup(struct i2c_client *client, int gpio,
+ unsigned int ngpio, void *c)
+{
+ int status;
+
+ if (ngpio < 8)
+ return -EINVAL;
+
+ status = evm_sw_setup(client, gpio, 4, c);
+ if (status)
+ return status;
+
+ return evm_led_setup(client, gpio+4, 4, c);
+}
+
+static int evm_pcf_teardown(struct i2c_client *client, int gpio,
+ unsigned int ngpio, void *c)
+{
+ BUG_ON(ngpio < 8);
+
+ evm_sw_teardown(client, gpio, 4, c);
+ evm_led_teardown(client, gpio+4, 4, c);
+
+ return 0;
+}
+
+static struct pcf857x_platform_data pcf_data = {
+ .gpio_base = DAVINCI_N_GPIO+1,
+ .setup = evm_pcf_setup,
+ .teardown = evm_pcf_teardown,
+};
+
+/* Most of this EEPROM is unused, but U-Boot uses some data:
+ * - 0x7f00, 6 bytes Ethernet Address
+ * - ... newer boards may have more
+ */
+
+static struct at24_platform_data eeprom_info = {
+ .byte_len = (256*1024) / 8,
+ .page_size = 64,
+ .flags = AT24_FLAG_ADDR16,
+ .setup = davinci_get_mac_addr,
+ .context = (void *)0x7f00,
+};
+
+static struct i2c_board_info __initdata i2c_info[] = {
+ {
+ I2C_BOARD_INFO("24c256", 0x50),
+ .platform_data = &eeprom_info,
+ },
+ {
+ I2C_BOARD_INFO("pcf8574a", 0x38),
+ .platform_data = &pcf_data,
+ },
+};
+
+static struct davinci_i2c_platform_data i2c_pdata = {
+ .bus_freq = 100 /* kHz */,
+ .bus_delay = 0 /* usec */,
+};
+
+static void __init evm_init_i2c(void)
+{
+ davinci_init_i2c(&i2c_pdata);
+ i2c_register_board_info(1, i2c_info, ARRAY_SIZE(i2c_info));
+}
+
+static void __init davinci_map_io(void)
+{
+ dm646x_init();
+}
+
+static __init void evm_init(void)
+{
+ struct davinci_soc_info *soc_info = &davinci_soc_info;
+
+ evm_init_i2c();
+ davinci_serial_init(&uart_config);
+
+ soc_info->emac_pdata->phy_mask = DM646X_EVM_PHY_MASK;
+ soc_info->emac_pdata->mdio_max_freq = DM646X_EVM_MDIO_FREQUENCY;
+}
+
+static __init void davinci_dm646x_evm_irq_init(void)
+{
+ davinci_irq_init();
+}
+
+MACHINE_START(DAVINCI_DM6467_EVM, "DaVinci DM646x EVM")
+ .phys_io = IO_PHYS,
+ .io_pg_offst = (__IO_ADDRESS(IO_PHYS) >> 18) & 0xfffc,
+ .boot_params = (0x80000100),
+ .map_io = davinci_map_io,
+ .init_irq = davinci_dm646x_evm_irq_init,
+ .timer = &davinci_timer,
+ .init_machine = evm_init,
+MACHINE_END
+
OpenPOWER on IntegriCloud