This adds basic board support for the OMAP3430 LDP development platform.
It adds support for the touchscreen, RTC, UART, USB and MMC - all of which
work with little or no changes w.r.t. the OMAP3430 SDP.
Signed-off-by: Nishant Kamat <nskamat@xxxxxx>
---
arch/arm/mach-omap2/Kconfig | 4 +
arch/arm/mach-omap2/Makefile | 3 +
arch/arm/mach-omap2/board-ldp.c | 253 +++++++++++++++++++++++++++++++++
include/asm-arm/arch-omap/board-ldp.h | 34 +++++
include/asm-arm/arch-omap/hardware.h | 4 +
5 files changed, 298 insertions(+), 0 deletions(-)
create mode 100644 arch/arm/mach-omap2/board-ldp.c
create mode 100644 include/asm-arm/arch-omap/board-ldp.h
diff --git a/arch/arm/mach-omap2/Kconfig b/arch/arm/mach-omap2/Kconfig
index 5c229cc..d38f8ca 100644
--- a/arch/arm/mach-omap2/Kconfig
+++ b/arch/arm/mach-omap2/Kconfig
@@ -98,6 +98,10 @@ config MACH_OMAP_2430SDP
bool "OMAP 2430 SDP board"
depends on ARCH_OMAP2 && ARCH_OMAP2430
+config MACH_OMAP_LDP
+ bool "OMAP 3 LDP board"
+ depends on ARCH_OMAP3 && ARCH_OMAP34XX
+
config MACH_OMAP_2430OSK
bool "OMAP 2430 OSK board"
depends on ARCH_OMAP2 && ARCH_OMAP24XX
diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
index 552664c..b6eea89 100644
--- a/arch/arm/mach-omap2/Makefile
+++ b/arch/arm/mach-omap2/Makefile
@@ -44,6 +44,9 @@ obj-$(CONFIG_MACH_OMAP3EVM) += board-omap3evm.o \
obj-$(CONFIG_MACH_OMAP3_BEAGLE) += board-omap3beagle.o \
usb-musb.o usb-ehci.o \
hsmmc.o
+obj-$(CONFIG_MACH_OMAP_LDP) += board-ldp.o \
+ hsmmc.o \
+ usb-musb.o
obj-$(CONFIG_MACH_OMAP_APOLLON) += board-apollon.o \
board-apollon-mmc.o \
board-apollon-keys.o
diff --git a/arch/arm/mach-omap2/board-ldp.c b/arch/arm/mach-omap2/board-ldp.c
new file mode 100644
index 0000000..2ac4c9b
--- /dev/null
+++ b/arch/arm/mach-omap2/board-ldp.c
@@ -0,0 +1,253 @@
+/*
+ * linux/arch/arm/mach-omap2/board-ldp.c
+ *
+ * Copyright (C) 2008 Texas Instruments Inc.
+ * Nishant Kamat <nskamat@xxxxxx>
+ *
+ * Modified from mach-omap2/board-3430sdp.c
+ *
+ * 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/platform_device.h>
+#include <linux/delay.h>
+#include <linux/input.h>
+#include <linux/workqueue.h>
+#include <linux/err.h>
+#include <linux/clk.h>
+#include <linux/spi/spi.h>
+#include <linux/spi/ads7846.h>
+#include <linux/i2c/twl4030.h>
+#include <linux/i2c/twl4030-rtc.h>
+
+#include <asm/hardware.h>
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+
+#include <asm/arch/mcspi.h>
+#include <asm/arch/gpio.h>
+#include <asm/arch/board.h>
+#include <asm/arch/common.h>
+#include <asm/arch/gpmc.h>
+#include <asm/arch/hsmmc.h>
+#include <asm/arch/usb-musb.h>
+
+#include <asm/io.h>
+#include <asm/delay.h>
+#include <asm/arch/control.h>
+
+#define ENABLE_VAUX1_DEDICATED 0x03
+#define ENABLE_VAUX1_DEV_GRP 0x20
+
+#define TWL4030_MSECURE_GPIO 22
+
+static int ts_gpio;
+
+#ifdef CONFIG_RTC_DRV_TWL4030
+static int twl4030_rtc_init(void)
+{
+ int ret = 0;
+
+ /* 3430ES2.0 doesn't have msecure/gpio-22 line connected to T2 */
+ if (is_device_type_gp() && is_sil_rev_less_than(OMAP3430_REV_ES2_0)) {
+ u32 msecure_pad_config_reg = omap_ctrl_base_get() + 0xA3C;
+ int mux_mask = 0x04;
+ u16 tmp;
+
+ ret = omap_request_gpio(TWL4030_MSECURE_GPIO);
+ if (ret < 0) {
+ printk(KERN_ERR "twl4030_rtc_init: can't"
+ "reserve GPIO:%d !\n", TWL4030_MSECURE_GPIO);
+ goto out;
+ }
+ /*
+ * TWL4030 will be in secure mode if msecure line from OMAP
+ * is low. Make msecure line high in order to change the
+ * TWL4030 RTC time and calender registers.
+ */
+ omap_set_gpio_direction(TWL4030_MSECURE_GPIO, 0);
+
+ tmp = omap_readw(msecure_pad_config_reg);
+ tmp &= 0xF8; /* To enable mux mode 03/04 = GPIO_RTC */
+ tmp |= mux_mask;/* To enable mux mode 03/04 = GPIO_RTC */
+ omap_writew(tmp, msecure_pad_config_reg);
+
+ omap_set_gpio_dataout(TWL4030_MSECURE_GPIO, 1);
+ }
+out:
+ return ret;
+}
+
+static void twl4030_rtc_exit(void)
+{
+ omap_free_gpio(TWL4030_MSECURE_GPIO);
+}
+
+static struct twl4030rtc_platform_data ldp_twl4030rtc_data = {
+ .init = &twl4030_rtc_init,
+ .exit = &twl4030_rtc_exit,
+};
+
+static struct platform_device ldp_twl4030rtc_device = {
+ .name = "twl4030_rtc",
+ .id = -1,
+ .dev = {
+ .platform_data = &ldp_twl4030rtc_data,
+ },
+};
+#endif
+
+/**
+ * @brief ads7846_dev_init : Requests & sets GPIO line for pen-irq
+ *
+ * @return - void. If request gpio fails then Flag KERN_ERR.
+ */
+static void ads7846_dev_init(void)
+{
+ if (omap_request_gpio(ts_gpio) < 0) {
+ printk(KERN_ERR "can't get ads746 pen down GPIO\n");
+ return;
+ }
+
+ omap_set_gpio_direction(ts_gpio, 1);
+
+ omap_set_gpio_debounce(ts_gpio, 1);
+ omap_set_gpio_debounce_time(ts_gpio, 0xa);
+}
+
+static int ads7846_get_pendown_state(void)
+{
+ return !omap_get_gpio_datain(ts_gpio);
+}
+
+/*
+ * This enable(1)/disable(0) the voltage for TS: uses twl4030 calls
+ */
+static int ads7846_vaux_control(int vaux_cntrl)
+{
+ int ret = 0;
+
+#ifdef CONFIG_TWL4030_CORE
+ /* check for return value of ldo_use: if success it returns 0 */
+ if (vaux_cntrl == VAUX_ENABLE) {
+ if (ret != twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER,
+ ENABLE_VAUX1_DEDICATED, TWL4030_VAUX1_DEDICATED))
+ return -EIO;
+ if (ret != twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER,
+ ENABLE_VAUX1_DEV_GRP, TWL4030_VAUX1_DEV_GRP))
+ return -EIO;
+ } else if (vaux_cntrl == VAUX_DISABLE) {
+ if (ret != twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER,
+ 0x00, TWL4030_VAUX1_DEDICATED))
+ return -EIO;
+ if (ret != twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER,
+ 0x00, TWL4030_VAUX1_DEV_GRP))
+ return -EIO;
+ }
+#else
+ ret = -EIO;
+#endif
+ return ret;
+}
+
+static struct ads7846_platform_data tsc2046_config __initdata = {
+ .get_pendown_state = ads7846_get_pendown_state,
+ .keep_vref_on = 1,
+ .vaux_control = ads7846_vaux_control,
+};
+
+
+static struct omap2_mcspi_device_config tsc2046_mcspi_config = {
+ .turbo_mode = 0,
+ .single_channel = 1, /* 0: slave, 1: master */
+};
+
+static struct spi_board_info ldp_spi_board_info[] __initdata = {
+ [0] = {
+ /*
+ * TSC2046 operates at a max freqency of 2MHz, so
+ * operate slightly below at 1.5MHz
+ */
+ .modalias = "ads7846",
+ .bus_num = 1,
+ .chip_select = 0,
+ .max_speed_hz = 1500000,
+ .controller_data = &tsc2046_mcspi_config,
+ .irq = 0,
+ .platform_data = &tsc2046_config,
+ },
+};
+
+static struct platform_device *ldp_devices[] __initdata = {
+#ifdef CONFIG_RTC_DRV_TWL4030
+ &ldp_twl4030rtc_device,
+#endif
+};
+
+static void __init omap_ldp_init_irq(void)
+{
+ omap2_init_common_hw();
+ omap_init_irq();
+ omap_gpio_init();
+}
+
+static struct omap_uart_config ldp_uart_config __initdata = {
+ .enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
+};
+
+static struct omap_mmc_config ldp_mmc_config __initdata = {
+ .mmc [0] = {
+ .enabled = 1,
+ .wire4 = 1,
+ },
+};
+
+static struct omap_board_config_kernel ldp_config[] __initdata = {
+ { OMAP_TAG_UART, &ldp_uart_config },
+ { OMAP_TAG_MMC, &ldp_mmc_config },
+};
+
+static int __init omap_i2c_init(void)
+{
+ omap_register_i2c_bus(1, 2600, NULL, 0);
+ omap_register_i2c_bus(2, 400, NULL, 0);
+ omap_register_i2c_bus(3, 400, NULL, 0);
+ return 0;
+}
+
+static void __init omap_ldp_init(void)
+{
+ platform_add_devices(ldp_devices, ARRAY_SIZE(ldp_devices));
+ omap_board_config = ldp_config;
+ omap_board_config_size = ARRAY_SIZE(ldp_config);
+ ts_gpio = 54;
+ ldp_spi_board_info[0].irq = OMAP_GPIO_IRQ(ts_gpio);
+ spi_register_board_info(ldp_spi_board_info,
+ ARRAY_SIZE(ldp_spi_board_info));
+ ads7846_dev_init();
+ omap_serial_init();
+ usb_musb_init();
+ hsmmc_init();
+}
+
+static void __init omap_ldp_map_io(void)
+{
+ omap2_set_globals_343x();
+ omap2_map_common_io();
+}
+arch_initcall(omap_i2c_init);
+
+MACHINE_START(OMAP_LDP, "OMAP LDP board")
+ .phys_io = 0x48000000,
+ .io_pg_offst = ((0xd8000000) >> 18) & 0xfffc,
+ .boot_params = 0x80000100,
+ .map_io = omap_ldp_map_io,
+ .init_irq = omap_ldp_init_irq,
+ .init_machine = omap_ldp_init,
+ .timer = &omap_timer,
+MACHINE_END
diff --git a/include/asm-arm/arch-omap/board-ldp.h b/include/asm-arm/arch-omap/board-ldp.h
new file mode 100644
index 0000000..b227561
--- /dev/null
+++ b/include/asm-arm/arch-omap/board-ldp.h
@@ -0,0 +1,34 @@
+/*
+ * linux/include/asm-arm/arch-omap/board-ldp.h
+ *
+ * Hardware definitions for TI OMAP3 LDP.
+ *
+ * Copyright (C) 2008 Texas Instruments Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
+ * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * 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.,
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef __ASM_ARCH_OMAP_LDP_H
+#define __ASM_ARCH_OMAP_LDP_H
+
+#define TWL4030_IRQNUM INT_34XX_SYS_NIRQ
+
+#endif /* __ASM_ARCH_OMAP_LDP_H */
diff --git a/include/asm-arm/arch-omap/hardware.h b/include/asm-arm/arch-omap/hardware.h
index 09f8ef8..fed9a76 100644
--- a/include/asm-arm/arch-omap/hardware.h
+++ b/include/asm-arm/arch-omap/hardware.h
@@ -343,6 +343,10 @@
#include "board-omap3beagle.h"
#endif
+#ifdef CONFIG_MACH_OMAP_LDP
+#include "board-ldp.h"
+#endif
+
#ifdef CONFIG_MACH_OMAP_APOLLON
#include "board-apollon.h"
#endif
--
1.5.3.2
--
To unsubscribe from this list: send the line "unsubscribe linux-omap" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
