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bc3668ea04
For common arm zImage existing nand header file in platform specific location was moved to generic platform data location, but it contained more than platform data, remove it. New local header has been created for exposing functions. Also move gpmc-nand platform data to platform header meant for nand from gpmc header file Signed-off-by: Afzal Mohammed <afzal@ti.com>
98 lines
2.6 KiB
C
98 lines
2.6 KiB
C
/*
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* common-board-devices.c
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*
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* Copyright (C) 2011 CompuLab, Ltd.
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* Author: Mike Rapoport <mike@compulab.co.il>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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* 02110-1301 USA
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*
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*/
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#include <linux/gpio.h>
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#include <linux/spi/spi.h>
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#include <linux/spi/ads7846.h>
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#include <linux/platform_data/spi-omap2-mcspi.h>
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#include "common.h"
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#include "common-board-devices.h"
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#if defined(CONFIG_TOUCHSCREEN_ADS7846) || \
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defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
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static struct omap2_mcspi_device_config ads7846_mcspi_config = {
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.turbo_mode = 0,
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};
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static struct ads7846_platform_data ads7846_config = {
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.x_max = 0x0fff,
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.y_max = 0x0fff,
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.x_plate_ohms = 180,
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.pressure_max = 255,
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.debounce_max = 10,
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.debounce_tol = 3,
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.debounce_rep = 1,
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.gpio_pendown = -EINVAL,
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.keep_vref_on = 1,
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};
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static struct spi_board_info ads7846_spi_board_info __initdata = {
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.modalias = "ads7846",
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.bus_num = -EINVAL,
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.chip_select = 0,
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.max_speed_hz = 1500000,
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.controller_data = &ads7846_mcspi_config,
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.irq = -EINVAL,
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.platform_data = &ads7846_config,
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};
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void __init omap_ads7846_init(int bus_num, int gpio_pendown, int gpio_debounce,
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struct ads7846_platform_data *board_pdata)
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{
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struct spi_board_info *spi_bi = &ads7846_spi_board_info;
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int err;
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err = gpio_request_one(gpio_pendown, GPIOF_IN, "TSPenDown");
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if (err) {
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pr_err("Couldn't obtain gpio for TSPenDown: %d\n", err);
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return;
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}
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if (gpio_debounce)
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gpio_set_debounce(gpio_pendown, gpio_debounce);
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spi_bi->bus_num = bus_num;
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spi_bi->irq = gpio_to_irq(gpio_pendown);
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if (board_pdata) {
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board_pdata->gpio_pendown = gpio_pendown;
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spi_bi->platform_data = board_pdata;
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if (board_pdata->get_pendown_state)
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gpio_export(gpio_pendown, 0);
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} else {
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ads7846_config.gpio_pendown = gpio_pendown;
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}
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if (!board_pdata || (board_pdata && !board_pdata->get_pendown_state))
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gpio_free(gpio_pendown);
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spi_register_board_info(&ads7846_spi_board_info, 1);
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}
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#else
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void __init omap_ads7846_init(int bus_num, int gpio_pendown, int gpio_debounce,
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struct ads7846_platform_data *board_pdata)
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{
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}
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#endif
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