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git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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3ea9ae57b4
Some GPIO lookup tables defined in davinci board files are missing array sentinels. If an entry for given device cannot be found, this will cause a kernel panic. Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com>
448 lines
11 KiB
C
448 lines
11 KiB
C
/*
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* TI DaVinci EVM board support
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*
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* Author: Kevin Hilman, Deep Root Systems, LLC
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*
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* 2007 (c) MontaVista Software, Inc. This file is licensed under
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* the terms of the GNU General Public License version 2. This program
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* is licensed "as is" without any warranty of any kind, whether express
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* or implied.
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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/err.h>
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#include <linux/platform_device.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/rawnand.h>
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#include <linux/i2c.h>
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#include <linux/gpio.h>
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#include <linux/gpio/machine.h>
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#include <linux/clk.h>
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#include <linux/dm9000.h>
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#include <linux/videodev2.h>
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#include <media/i2c/tvp514x.h>
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#include <linux/spi/spi.h>
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#include <linux/spi/eeprom.h>
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#include <linux/platform_data/gpio-davinci.h>
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#include <linux/platform_data/i2c-davinci.h>
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#include <linux/platform_data/mtd-davinci.h>
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#include <linux/platform_data/mmc-davinci.h>
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#include <linux/platform_data/usb-davinci.h>
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#include <asm/mach-types.h>
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#include <asm/mach/arch.h>
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#include <mach/serial.h>
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#include <mach/common.h>
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#include "davinci.h"
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/* NOTE: this is geared for the standard config, with a socketed
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* 2 GByte Micron NAND (MT29F16G08FAA) using 128KB sectors. If you
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* swap chips, maybe with a different block size, partitioning may
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* need to be changed.
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*/
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#define NAND_BLOCK_SIZE SZ_128K
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static struct mtd_partition davinci_nand_partitions[] = {
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{
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/* UBL (a few copies) plus U-Boot */
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.name = "bootloader",
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.offset = 0,
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.size = 15 * NAND_BLOCK_SIZE,
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.mask_flags = MTD_WRITEABLE, /* force read-only */
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}, {
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/* U-Boot environment */
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.name = "params",
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.offset = MTDPART_OFS_APPEND,
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.size = 1 * NAND_BLOCK_SIZE,
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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_4M,
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.mask_flags = 0,
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}, {
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.name = "filesystem1",
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.offset = MTDPART_OFS_APPEND,
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.size = SZ_512M,
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.mask_flags = 0,
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}, {
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.name = "filesystem2",
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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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/* two blocks with bad block table (and mirror) at the end */
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};
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static struct davinci_nand_pdata davinci_nand_data = {
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.core_chipsel = 0,
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.mask_chipsel = BIT(14),
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.parts = davinci_nand_partitions,
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.nr_parts = ARRAY_SIZE(davinci_nand_partitions),
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.ecc_mode = NAND_ECC_HW,
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.bbt_options = NAND_BBT_USE_FLASH,
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.ecc_bits = 4,
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};
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static struct resource davinci_nand_resources[] = {
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{
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.start = DM355_ASYNC_EMIF_DATA_CE0_BASE,
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.end = DM355_ASYNC_EMIF_DATA_CE0_BASE + SZ_32M - 1,
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.flags = IORESOURCE_MEM,
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}, {
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.start = DM355_ASYNC_EMIF_CONTROL_BASE,
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.end = DM355_ASYNC_EMIF_CONTROL_BASE + SZ_4K - 1,
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.flags = IORESOURCE_MEM,
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},
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};
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static struct platform_device davinci_nand_device = {
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.name = "davinci_nand",
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.id = 0,
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.num_resources = ARRAY_SIZE(davinci_nand_resources),
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.resource = davinci_nand_resources,
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.dev = {
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.platform_data = &davinci_nand_data,
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},
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};
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#define DM355_I2C_SDA_PIN GPIO_TO_PIN(0, 15)
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#define DM355_I2C_SCL_PIN GPIO_TO_PIN(0, 14)
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static struct gpiod_lookup_table i2c_recovery_gpiod_table = {
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.dev_id = "i2c_davinci.1",
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.table = {
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GPIO_LOOKUP("davinci_gpio", DM355_I2C_SDA_PIN, "sda",
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GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
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GPIO_LOOKUP("davinci_gpio", DM355_I2C_SCL_PIN, "scl",
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GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
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{ }
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},
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};
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static struct davinci_i2c_platform_data i2c_pdata = {
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.bus_freq = 400 /* kHz */,
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.bus_delay = 0 /* usec */,
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.gpio_recovery = true,
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};
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static int dm355evm_mmc_gpios = -EINVAL;
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static void dm355evm_mmcsd_gpios(unsigned gpio)
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{
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gpio_request(gpio + 0, "mmc0_ro");
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gpio_request(gpio + 1, "mmc0_cd");
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gpio_request(gpio + 2, "mmc1_ro");
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gpio_request(gpio + 3, "mmc1_cd");
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/* we "know" these are input-only so we don't
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* need to call gpio_direction_input()
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*/
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dm355evm_mmc_gpios = gpio;
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}
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static struct i2c_board_info dm355evm_i2c_info[] = {
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{ I2C_BOARD_INFO("dm355evm_msp", 0x25),
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.platform_data = dm355evm_mmcsd_gpios,
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},
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/* { plus irq }, */
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{ I2C_BOARD_INFO("tlv320aic33", 0x1b), },
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};
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static void __init evm_init_i2c(void)
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{
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gpiod_add_lookup_table(&i2c_recovery_gpiod_table);
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davinci_init_i2c(&i2c_pdata);
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gpio_request(5, "dm355evm_msp");
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gpio_direction_input(5);
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dm355evm_i2c_info[0].irq = gpio_to_irq(5);
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i2c_register_board_info(1, dm355evm_i2c_info,
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ARRAY_SIZE(dm355evm_i2c_info));
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}
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static struct resource dm355evm_dm9000_rsrc[] = {
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{
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/* addr */
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.start = 0x04014000,
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.end = 0x04014001,
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.flags = IORESOURCE_MEM,
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}, {
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/* data */
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.start = 0x04014002,
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.end = 0x04014003,
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.flags = IORESOURCE_MEM,
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}, {
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.flags = IORESOURCE_IRQ
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| IORESOURCE_IRQ_HIGHEDGE /* rising (active high) */,
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},
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};
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static struct dm9000_plat_data dm335evm_dm9000_platdata;
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static struct platform_device dm355evm_dm9000 = {
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.name = "dm9000",
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.id = -1,
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.resource = dm355evm_dm9000_rsrc,
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.num_resources = ARRAY_SIZE(dm355evm_dm9000_rsrc),
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.dev = {
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.platform_data = &dm335evm_dm9000_platdata,
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},
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};
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static struct tvp514x_platform_data tvp5146_pdata = {
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.clk_polarity = 0,
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.hs_polarity = 1,
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.vs_polarity = 1
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};
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#define TVP514X_STD_ALL (V4L2_STD_NTSC | V4L2_STD_PAL)
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/* Inputs available at the TVP5146 */
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static struct v4l2_input tvp5146_inputs[] = {
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{
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.index = 0,
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.name = "Composite",
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.type = V4L2_INPUT_TYPE_CAMERA,
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.std = TVP514X_STD_ALL,
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},
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{
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.index = 1,
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.name = "S-Video",
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.type = V4L2_INPUT_TYPE_CAMERA,
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.std = TVP514X_STD_ALL,
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},
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};
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/*
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* this is the route info for connecting each input to decoder
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* ouput that goes to vpfe. There is a one to one correspondence
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* with tvp5146_inputs
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*/
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static struct vpfe_route tvp5146_routes[] = {
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{
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.input = INPUT_CVBS_VI2B,
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.output = OUTPUT_10BIT_422_EMBEDDED_SYNC,
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},
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{
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.input = INPUT_SVIDEO_VI2C_VI1C,
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.output = OUTPUT_10BIT_422_EMBEDDED_SYNC,
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},
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};
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static struct vpfe_subdev_info vpfe_sub_devs[] = {
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{
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.name = "tvp5146",
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.grp_id = 0,
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.num_inputs = ARRAY_SIZE(tvp5146_inputs),
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.inputs = tvp5146_inputs,
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.routes = tvp5146_routes,
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.can_route = 1,
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.ccdc_if_params = {
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.if_type = VPFE_BT656,
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.hdpol = VPFE_PINPOL_POSITIVE,
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.vdpol = VPFE_PINPOL_POSITIVE,
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},
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.board_info = {
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I2C_BOARD_INFO("tvp5146", 0x5d),
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.platform_data = &tvp5146_pdata,
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},
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}
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};
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static struct vpfe_config vpfe_cfg = {
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.num_subdevs = ARRAY_SIZE(vpfe_sub_devs),
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.i2c_adapter_id = 1,
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.sub_devs = vpfe_sub_devs,
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.card_name = "DM355 EVM",
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.ccdc = "DM355 CCDC",
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};
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/* venc standards timings */
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static struct vpbe_enc_mode_info dm355evm_enc_preset_timing[] = {
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{
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.name = "ntsc",
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.timings_type = VPBE_ENC_STD,
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.std_id = V4L2_STD_NTSC,
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.interlaced = 1,
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.xres = 720,
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.yres = 480,
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.aspect = {11, 10},
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.fps = {30000, 1001},
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.left_margin = 0x79,
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.upper_margin = 0x10,
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},
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{
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.name = "pal",
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.timings_type = VPBE_ENC_STD,
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.std_id = V4L2_STD_PAL,
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.interlaced = 1,
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.xres = 720,
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.yres = 576,
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.aspect = {54, 59},
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.fps = {25, 1},
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.left_margin = 0x7E,
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.upper_margin = 0x16
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},
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};
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#define VENC_STD_ALL (V4L2_STD_NTSC | V4L2_STD_PAL)
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/*
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* The outputs available from VPBE + ecnoders. Keep the
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* the order same as that of encoders. First those from venc followed by that
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* from encoders. Index in the output refers to index on a particular encoder.
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* Driver uses this index to pass it to encoder when it supports more than
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* one output. Application uses index of the array to set an output.
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*/
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static struct vpbe_output dm355evm_vpbe_outputs[] = {
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{
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.output = {
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.index = 0,
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.name = "Composite",
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.type = V4L2_OUTPUT_TYPE_ANALOG,
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.std = VENC_STD_ALL,
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.capabilities = V4L2_OUT_CAP_STD,
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},
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.subdev_name = DM355_VPBE_VENC_SUBDEV_NAME,
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.default_mode = "ntsc",
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.num_modes = ARRAY_SIZE(dm355evm_enc_preset_timing),
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.modes = dm355evm_enc_preset_timing,
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.if_params = MEDIA_BUS_FMT_FIXED,
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},
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};
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static struct vpbe_config dm355evm_display_cfg = {
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.module_name = "dm355-vpbe-display",
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.i2c_adapter_id = 1,
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.osd = {
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.module_name = DM355_VPBE_OSD_SUBDEV_NAME,
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},
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.venc = {
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.module_name = DM355_VPBE_VENC_SUBDEV_NAME,
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},
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.num_outputs = ARRAY_SIZE(dm355evm_vpbe_outputs),
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.outputs = dm355evm_vpbe_outputs,
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};
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static struct platform_device *davinci_evm_devices[] __initdata = {
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&dm355evm_dm9000,
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&davinci_nand_device,
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};
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static void __init dm355_evm_map_io(void)
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{
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dm355_init();
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}
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static int dm355evm_mmc_get_cd(int module)
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{
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if (!gpio_is_valid(dm355evm_mmc_gpios))
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return -ENXIO;
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/* low == card present */
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return !gpio_get_value_cansleep(dm355evm_mmc_gpios + 2 * module + 1);
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}
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static int dm355evm_mmc_get_ro(int module)
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{
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if (!gpio_is_valid(dm355evm_mmc_gpios))
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return -ENXIO;
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/* high == card's write protect switch active */
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return gpio_get_value_cansleep(dm355evm_mmc_gpios + 2 * module + 0);
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}
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static struct davinci_mmc_config dm355evm_mmc_config = {
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.get_cd = dm355evm_mmc_get_cd,
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.get_ro = dm355evm_mmc_get_ro,
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.wires = 4,
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.max_freq = 50000000,
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.caps = MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED,
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};
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/* Don't connect anything to J10 unless you're only using USB host
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* mode *and* have to do so with some kind of gender-bender. If
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* you have proper Mini-B or Mini-A cables (or Mini-A adapters)
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* the ID pin won't need any help.
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*/
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#define USB_ID_VALUE 1 /* ID pulled low */
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static struct spi_eeprom at25640a = {
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.byte_len = SZ_64K / 8,
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.name = "at25640a",
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.page_size = 32,
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.flags = EE_ADDR2,
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};
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static const struct spi_board_info dm355_evm_spi_info[] __initconst = {
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{
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.modalias = "at25",
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.platform_data = &at25640a,
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.max_speed_hz = 10 * 1000 * 1000, /* at 3v3 */
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.bus_num = 0,
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.chip_select = 0,
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.mode = SPI_MODE_0,
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},
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};
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static __init void dm355_evm_init(void)
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{
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struct clk *aemif;
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int ret;
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dm355_register_clocks();
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ret = dm355_gpio_register();
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if (ret)
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pr_warn("%s: GPIO init failed: %d\n", __func__, ret);
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gpio_request(1, "dm9000");
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gpio_direction_input(1);
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dm355evm_dm9000_rsrc[2].start = gpio_to_irq(1);
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aemif = clk_get(&dm355evm_dm9000.dev, "aemif");
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if (!WARN(IS_ERR(aemif), "unable to get AEMIF clock\n"))
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clk_prepare_enable(aemif);
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platform_add_devices(davinci_evm_devices,
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ARRAY_SIZE(davinci_evm_devices));
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evm_init_i2c();
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davinci_serial_init(dm355_serial_device);
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/* NOTE: NAND flash timings set by the UBL are slower than
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* needed by MT29F16G08FAA chips ... EMIF.A1CR is 0x40400204
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* but could be 0x0400008c for about 25% faster page reads.
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*/
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gpio_request(2, "usb_id_toggle");
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gpio_direction_output(2, USB_ID_VALUE);
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/* irlml6401 switches over 1A in under 8 msec */
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davinci_setup_usb(1000, 8);
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davinci_setup_mmc(0, &dm355evm_mmc_config);
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davinci_setup_mmc(1, &dm355evm_mmc_config);
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dm355_init_video(&vpfe_cfg, &dm355evm_display_cfg);
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dm355_init_spi0(BIT(0), dm355_evm_spi_info,
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ARRAY_SIZE(dm355_evm_spi_info));
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/* DM335 EVM uses ASP1; line-out is a stereo mini-jack */
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dm355_init_asp1(ASP1_TX_EVT_EN | ASP1_RX_EVT_EN);
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}
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MACHINE_START(DAVINCI_DM355_EVM, "DaVinci DM355 EVM")
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.atag_offset = 0x100,
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.map_io = dm355_evm_map_io,
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.init_irq = dm355_init_irq,
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.init_time = dm355_init_time,
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.init_machine = dm355_evm_init,
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.init_late = davinci_init_late,
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.dma_zone_size = SZ_128M,
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MACHINE_END
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