590 lines
15 KiB
C
590 lines
15 KiB
C
/*
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* linux/arch/arm/mach-omap1/board-osk.c
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*
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* Board specific init for OMAP5912 OSK
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*
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* Written by Dirk Behme <dirk.behme@de.bosch.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
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* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <linux/interrupt.h>
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#include <linux/irq.h>
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#include <linux/i2c.h>
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#include <linux/leds.h>
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#include <linux/smc91x.h>
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#include <linux/mtd/mtd.h>
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#include <linux/mtd/partitions.h>
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#include <linux/mtd/physmap.h>
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#include <linux/i2c/tps65010.h>
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#include <mach/hardware.h>
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#include <asm/gpio.h>
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#include <asm/mach-types.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/map.h>
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#include <plat/flash.h>
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#include <plat/usb.h>
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#include <plat/mux.h>
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#include <plat/tc.h>
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#include <plat/common.h>
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/* At OMAP5912 OSK the Ethernet is directly connected to CS1 */
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#define OMAP_OSK_ETHR_START 0x04800300
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/* TPS65010 has four GPIOs. nPG and LED2 can be treated like GPIOs with
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* alternate pin configurations for hardware-controlled blinking.
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*/
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#define OSK_TPS_GPIO_BASE (OMAP_MAX_GPIO_LINES + 16 /* MPUIO */)
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# define OSK_TPS_GPIO_USB_PWR_EN (OSK_TPS_GPIO_BASE + 0)
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# define OSK_TPS_GPIO_LED_D3 (OSK_TPS_GPIO_BASE + 1)
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# define OSK_TPS_GPIO_LAN_RESET (OSK_TPS_GPIO_BASE + 2)
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# define OSK_TPS_GPIO_DSP_PWR_EN (OSK_TPS_GPIO_BASE + 3)
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# define OSK_TPS_GPIO_LED_D9 (OSK_TPS_GPIO_BASE + 4)
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# define OSK_TPS_GPIO_LED_D2 (OSK_TPS_GPIO_BASE + 5)
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static struct mtd_partition osk_partitions[] = {
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/* bootloader (U-Boot, etc) in first sector */
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{
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.name = "bootloader",
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.offset = 0,
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.size = SZ_128K,
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.mask_flags = MTD_WRITEABLE, /* force read-only */
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},
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/* bootloader params in the next sector */
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{
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.name = "params",
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.offset = MTDPART_OFS_APPEND,
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.size = SZ_128K,
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.mask_flags = 0,
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}, {
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.name = "kernel",
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.offset = MTDPART_OFS_APPEND,
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.size = SZ_2M,
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.mask_flags = 0
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}, {
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.name = "filesystem",
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.offset = MTDPART_OFS_APPEND,
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.size = MTDPART_SIZ_FULL,
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.mask_flags = 0
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}
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};
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static struct physmap_flash_data osk_flash_data = {
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.width = 2,
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.set_vpp = omap1_set_vpp,
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.parts = osk_partitions,
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.nr_parts = ARRAY_SIZE(osk_partitions),
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};
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static struct resource osk_flash_resource = {
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/* this is on CS3, wherever it's mapped */
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.flags = IORESOURCE_MEM,
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};
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static struct platform_device osk5912_flash_device = {
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.name = "physmap-flash",
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.id = 0,
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.dev = {
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.platform_data = &osk_flash_data,
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},
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.num_resources = 1,
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.resource = &osk_flash_resource,
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};
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static struct smc91x_platdata osk5912_smc91x_info = {
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.flags = SMC91X_USE_16BIT | SMC91X_NOWAIT,
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.leda = RPC_LED_100_10,
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.ledb = RPC_LED_TX_RX,
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};
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static struct resource osk5912_smc91x_resources[] = {
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[0] = {
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.start = OMAP_OSK_ETHR_START, /* Physical */
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.end = OMAP_OSK_ETHR_START + 0xf,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = OMAP_GPIO_IRQ(0),
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.end = OMAP_GPIO_IRQ(0),
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.flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
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},
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};
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static struct platform_device osk5912_smc91x_device = {
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.name = "smc91x",
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.id = -1,
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.dev = {
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.platform_data = &osk5912_smc91x_info,
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},
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.num_resources = ARRAY_SIZE(osk5912_smc91x_resources),
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.resource = osk5912_smc91x_resources,
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};
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static struct resource osk5912_cf_resources[] = {
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[0] = {
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.start = OMAP_GPIO_IRQ(62),
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.end = OMAP_GPIO_IRQ(62),
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct platform_device osk5912_cf_device = {
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.name = "omap_cf",
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.id = -1,
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.dev = {
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.platform_data = (void *) 2 /* CS2 */,
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},
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.num_resources = ARRAY_SIZE(osk5912_cf_resources),
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.resource = osk5912_cf_resources,
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};
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static struct platform_device *osk5912_devices[] __initdata = {
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&osk5912_flash_device,
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&osk5912_smc91x_device,
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&osk5912_cf_device,
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};
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static struct gpio_led tps_leds[] = {
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/* NOTE: D9 and D2 have hardware blink support.
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* Also, D9 requires non-battery power.
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*/
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{ .gpio = OSK_TPS_GPIO_LED_D9, .name = "d9",
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.default_trigger = "ide-disk", },
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{ .gpio = OSK_TPS_GPIO_LED_D2, .name = "d2", },
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{ .gpio = OSK_TPS_GPIO_LED_D3, .name = "d3", .active_low = 1,
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.default_trigger = "heartbeat", },
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};
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static struct gpio_led_platform_data tps_leds_data = {
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.num_leds = 3,
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.leds = tps_leds,
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};
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static struct platform_device osk5912_tps_leds = {
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.name = "leds-gpio",
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.id = 0,
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.dev.platform_data = &tps_leds_data,
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};
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static int osk_tps_setup(struct i2c_client *client, void *context)
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{
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/* Set GPIO 1 HIGH to disable VBUS power supply;
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* OHCI driver powers it up/down as needed.
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*/
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gpio_request(OSK_TPS_GPIO_USB_PWR_EN, "n_vbus_en");
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gpio_direction_output(OSK_TPS_GPIO_USB_PWR_EN, 1);
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/* Set GPIO 2 high so LED D3 is off by default */
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tps65010_set_gpio_out_value(GPIO2, HIGH);
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/* Set GPIO 3 low to take ethernet out of reset */
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gpio_request(OSK_TPS_GPIO_LAN_RESET, "smc_reset");
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gpio_direction_output(OSK_TPS_GPIO_LAN_RESET, 0);
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/* GPIO4 is VDD_DSP */
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gpio_request(OSK_TPS_GPIO_DSP_PWR_EN, "dsp_power");
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gpio_direction_output(OSK_TPS_GPIO_DSP_PWR_EN, 1);
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/* REVISIT if DSP support isn't configured, power it off ... */
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/* Let LED1 (D9) blink; leds-gpio may override it */
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tps65010_set_led(LED1, BLINK);
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/* Set LED2 off by default */
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tps65010_set_led(LED2, OFF);
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/* Enable LOW_PWR handshake */
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tps65010_set_low_pwr(ON);
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/* Switch VLDO2 to 3.0V for AIC23 */
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tps65010_config_vregs1(TPS_LDO2_ENABLE | TPS_VLDO2_3_0V
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| TPS_LDO1_ENABLE);
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/* register these three LEDs */
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osk5912_tps_leds.dev.parent = &client->dev;
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platform_device_register(&osk5912_tps_leds);
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return 0;
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}
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static struct tps65010_board tps_board = {
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.base = OSK_TPS_GPIO_BASE,
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.outmask = 0x0f,
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.setup = osk_tps_setup,
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};
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static struct i2c_board_info __initdata osk_i2c_board_info[] = {
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{
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I2C_BOARD_INFO("tps65010", 0x48),
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.irq = OMAP_GPIO_IRQ(OMAP_MPUIO(1)),
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.platform_data = &tps_board,
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},
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{
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I2C_BOARD_INFO("tlv320aic23", 0x1B),
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},
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/* TODO when driver support is ready:
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* - optionally on Mistral, ov9640 camera sensor at 0x30
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*/
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};
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static void __init osk_init_smc91x(void)
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{
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u32 l;
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if ((gpio_request(0, "smc_irq")) < 0) {
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printk("Error requesting gpio 0 for smc91x irq\n");
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return;
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}
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/* Check EMIFS wait states to fix errors with SMC_GET_PKT_HDR */
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l = omap_readl(EMIFS_CCS(1));
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l |= 0x3;
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omap_writel(l, EMIFS_CCS(1));
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}
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static void __init osk_init_cf(void)
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{
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omap_cfg_reg(M7_1610_GPIO62);
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if ((gpio_request(62, "cf_irq")) < 0) {
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printk("Error requesting gpio 62 for CF irq\n");
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return;
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}
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/* the CF I/O IRQ is really active-low */
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set_irq_type(gpio_to_irq(62), IRQ_TYPE_EDGE_FALLING);
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}
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static void __init osk_init_irq(void)
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{
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omap1_init_common_hw();
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omap_init_irq();
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omap_gpio_init();
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osk_init_smc91x();
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osk_init_cf();
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}
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static struct omap_usb_config osk_usb_config __initdata = {
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/* has usb host connector (A) ... for development it can also
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* be used, with a NONSTANDARD gender-bending cable/dongle, as
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* a peripheral.
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*/
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#ifdef CONFIG_USB_GADGET_OMAP
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.register_dev = 1,
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.hmc_mode = 0,
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#else
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.register_host = 1,
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.hmc_mode = 16,
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.rwc = 1,
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#endif
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.pins[0] = 2,
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};
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#ifdef CONFIG_OMAP_OSK_MISTRAL
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static struct omap_lcd_config osk_lcd_config __initdata = {
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.ctrl_name = "internal",
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};
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#endif
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static struct omap_board_config_kernel osk_config[] __initdata = {
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#ifdef CONFIG_OMAP_OSK_MISTRAL
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{ OMAP_TAG_LCD, &osk_lcd_config },
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#endif
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};
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#ifdef CONFIG_OMAP_OSK_MISTRAL
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#include <linux/input.h>
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#include <linux/i2c/at24.h>
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#include <linux/spi/spi.h>
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#include <linux/spi/ads7846.h>
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#include <plat/keypad.h>
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static struct at24_platform_data at24c04 = {
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.byte_len = SZ_4K / 8,
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.page_size = 16,
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};
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static struct i2c_board_info __initdata mistral_i2c_board_info[] = {
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{
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/* NOTE: powered from LCD supply */
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I2C_BOARD_INFO("24c04", 0x50),
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.platform_data = &at24c04,
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},
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/* TODO when driver support is ready:
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* - optionally ov9640 camera sensor at 0x30
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*/
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};
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static const int osk_keymap[] = {
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/* KEY(col, row, code) */
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KEY(0, 0, KEY_F1), /* SW4 */
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KEY(0, 3, KEY_UP), /* (sw2/up) */
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KEY(1, 1, KEY_LEFTCTRL), /* SW5 */
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KEY(1, 2, KEY_LEFT), /* (sw2/left) */
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KEY(2, 0, KEY_SPACE), /* SW3 */
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KEY(2, 1, KEY_ESC), /* SW6 */
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KEY(2, 2, KEY_DOWN), /* (sw2/down) */
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KEY(3, 2, KEY_ENTER), /* (sw2/select) */
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KEY(3, 3, KEY_RIGHT), /* (sw2/right) */
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0
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};
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static struct omap_kp_platform_data osk_kp_data = {
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.rows = 8,
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.cols = 8,
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.keymap = (int *) osk_keymap,
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.keymapsize = ARRAY_SIZE(osk_keymap),
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.delay = 9,
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};
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static struct resource osk5912_kp_resources[] = {
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[0] = {
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.start = INT_KEYBOARD,
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.end = INT_KEYBOARD,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct platform_device osk5912_kp_device = {
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.name = "omap-keypad",
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.id = -1,
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.dev = {
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.platform_data = &osk_kp_data,
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},
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.num_resources = ARRAY_SIZE(osk5912_kp_resources),
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.resource = osk5912_kp_resources,
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};
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static struct omap_backlight_config mistral_bl_data = {
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.default_intensity = 0xa0,
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};
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static struct platform_device mistral_bl_device = {
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.name = "omap-bl",
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.id = -1,
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.dev = {
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.platform_data = &mistral_bl_data,
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},
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};
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static struct platform_device osk5912_lcd_device = {
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.name = "lcd_osk",
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.id = -1,
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};
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static struct platform_device *mistral_devices[] __initdata = {
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&osk5912_kp_device,
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&mistral_bl_device,
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&osk5912_lcd_device,
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};
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static int mistral_get_pendown_state(void)
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{
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return !gpio_get_value(4);
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}
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static const struct ads7846_platform_data mistral_ts_info = {
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.model = 7846,
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.vref_delay_usecs = 100, /* internal, no capacitor */
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.x_plate_ohms = 419,
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.y_plate_ohms = 486,
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.get_pendown_state = mistral_get_pendown_state,
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};
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static struct spi_board_info __initdata mistral_boardinfo[] = { {
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/* MicroWire (bus 2) CS0 has an ads7846e */
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.modalias = "ads7846",
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.platform_data = &mistral_ts_info,
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.irq = OMAP_GPIO_IRQ(4),
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.max_speed_hz = 120000 /* max sample rate at 3V */
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* 26 /* command + data + overhead */,
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.bus_num = 2,
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.chip_select = 0,
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} };
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#ifdef CONFIG_PM
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static irqreturn_t
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osk_mistral_wake_interrupt(int irq, void *ignored)
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{
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return IRQ_HANDLED;
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}
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#endif
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static void __init osk_mistral_init(void)
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{
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/* NOTE: we could actually tell if there's a Mistral board
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* attached, e.g. by trying to read something from the ads7846.
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* But this arch_init() code is too early for that, since we
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* can't talk to the ads or even the i2c eeprom.
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*/
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/* parallel camera interface */
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omap_cfg_reg(J15_1610_CAM_LCLK);
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omap_cfg_reg(J18_1610_CAM_D7);
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omap_cfg_reg(J19_1610_CAM_D6);
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omap_cfg_reg(J14_1610_CAM_D5);
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omap_cfg_reg(K18_1610_CAM_D4);
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omap_cfg_reg(K19_1610_CAM_D3);
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omap_cfg_reg(K15_1610_CAM_D2);
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omap_cfg_reg(K14_1610_CAM_D1);
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omap_cfg_reg(L19_1610_CAM_D0);
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omap_cfg_reg(L18_1610_CAM_VS);
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omap_cfg_reg(L15_1610_CAM_HS);
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omap_cfg_reg(M19_1610_CAM_RSTZ);
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omap_cfg_reg(Y15_1610_CAM_OUTCLK);
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/* serial camera interface */
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omap_cfg_reg(H19_1610_CAM_EXCLK);
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omap_cfg_reg(W13_1610_CCP_CLKM);
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omap_cfg_reg(Y12_1610_CCP_CLKP);
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/* CCP_DATAM CONFLICTS WITH UART1.TX (and serial console) */
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/* omap_cfg_reg(Y14_1610_CCP_DATAM); */
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omap_cfg_reg(W14_1610_CCP_DATAP);
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/* CAM_PWDN */
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if (gpio_request(11, "cam_pwdn") == 0) {
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omap_cfg_reg(N20_1610_GPIO11);
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gpio_direction_output(11, 0);
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} else
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pr_debug("OSK+Mistral: CAM_PWDN is awol\n");
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/* omap_cfg_reg(P19_1610_GPIO6); */ /* BUSY */
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gpio_request(6, "ts_busy");
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gpio_direction_input(6);
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|
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omap_cfg_reg(P20_1610_GPIO4); /* PENIRQ */
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gpio_request(4, "ts_int");
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|
gpio_direction_input(4);
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set_irq_type(gpio_to_irq(4), IRQ_TYPE_EDGE_FALLING);
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|
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spi_register_board_info(mistral_boardinfo,
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ARRAY_SIZE(mistral_boardinfo));
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|
|
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/* the sideways button (SW1) is for use as a "wakeup" button
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|
*
|
|
* NOTE: The Mistral board has the wakeup button (SW1) wired
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|
* to the LCD 3.3V rail, which is powered down during suspend.
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|
* To allow this button to wake up the omap, work around this
|
|
* HW bug by rewiring SW1 to use the main 3.3V rail.
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|
*/
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|
omap_cfg_reg(N15_1610_MPUIO2);
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if (gpio_request(OMAP_MPUIO(2), "wakeup") == 0) {
|
|
int ret = 0;
|
|
int irq = gpio_to_irq(OMAP_MPUIO(2));
|
|
|
|
gpio_direction_input(OMAP_MPUIO(2));
|
|
set_irq_type(irq, IRQ_TYPE_EDGE_RISING);
|
|
#ifdef CONFIG_PM
|
|
/* share the IRQ in case someone wants to use the
|
|
* button for more than wakeup from system sleep.
|
|
*/
|
|
ret = request_irq(irq,
|
|
&osk_mistral_wake_interrupt,
|
|
IRQF_SHARED, "mistral_wakeup",
|
|
&osk_mistral_wake_interrupt);
|
|
if (ret != 0) {
|
|
gpio_free(OMAP_MPUIO(2));
|
|
printk(KERN_ERR "OSK+Mistral: no wakeup irq, %d?\n",
|
|
ret);
|
|
} else
|
|
enable_irq_wake(irq);
|
|
#endif
|
|
} else
|
|
printk(KERN_ERR "OSK+Mistral: wakeup button is awol\n");
|
|
|
|
/* LCD: backlight, and power; power controls other devices on the
|
|
* board, like the touchscreen, EEPROM, and wakeup (!) switch.
|
|
*/
|
|
omap_cfg_reg(PWL);
|
|
if (gpio_request(2, "lcd_pwr") == 0)
|
|
gpio_direction_output(2, 1);
|
|
|
|
i2c_register_board_info(1, mistral_i2c_board_info,
|
|
ARRAY_SIZE(mistral_i2c_board_info));
|
|
|
|
platform_add_devices(mistral_devices, ARRAY_SIZE(mistral_devices));
|
|
}
|
|
#else
|
|
static void __init osk_mistral_init(void) { }
|
|
#endif
|
|
|
|
#define EMIFS_CS3_VAL (0x88013141)
|
|
|
|
static void __init osk_init(void)
|
|
{
|
|
u32 l;
|
|
|
|
/* Workaround for wrong CS3 (NOR flash) timing
|
|
* There are some U-Boot versions out there which configure
|
|
* wrong CS3 memory timings. This mainly leads to CRC
|
|
* or similar errors if you use NOR flash (e.g. with JFFS2)
|
|
*/
|
|
l = omap_readl(EMIFS_CCS(3));
|
|
if (l != EMIFS_CS3_VAL)
|
|
omap_writel(EMIFS_CS3_VAL, EMIFS_CCS(3));
|
|
|
|
osk_flash_resource.end = osk_flash_resource.start = omap_cs3_phys();
|
|
osk_flash_resource.end += SZ_32M - 1;
|
|
platform_add_devices(osk5912_devices, ARRAY_SIZE(osk5912_devices));
|
|
omap_board_config = osk_config;
|
|
omap_board_config_size = ARRAY_SIZE(osk_config);
|
|
|
|
l = omap_readl(USB_TRANSCEIVER_CTRL);
|
|
l |= (3 << 1);
|
|
omap_writel(l, USB_TRANSCEIVER_CTRL);
|
|
|
|
omap1_usb_init(&osk_usb_config);
|
|
|
|
/* irq for tps65010 chip */
|
|
/* bootloader effectively does: omap_cfg_reg(U19_1610_MPUIO1); */
|
|
if (gpio_request(OMAP_MPUIO(1), "tps65010") == 0)
|
|
gpio_direction_input(OMAP_MPUIO(1));
|
|
|
|
omap_serial_init();
|
|
omap_register_i2c_bus(1, 400, osk_i2c_board_info,
|
|
ARRAY_SIZE(osk_i2c_board_info));
|
|
osk_mistral_init();
|
|
}
|
|
|
|
static void __init osk_map_io(void)
|
|
{
|
|
omap1_map_common_io();
|
|
}
|
|
|
|
MACHINE_START(OMAP_OSK, "TI-OSK")
|
|
/* Maintainer: Dirk Behme <dirk.behme@de.bosch.com> */
|
|
.boot_params = 0x10000100,
|
|
.map_io = osk_map_io,
|
|
.reserve = omap_reserve,
|
|
.init_irq = osk_init_irq,
|
|
.init_machine = osk_init,
|
|
.timer = &omap_timer,
|
|
MACHINE_END
|