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@@ -0,0 +1,591 @@
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+/*
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+ * picodlp panel driver
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+ * picodlp_i2c_driver: i2c_client driver
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+ *
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+ * Copyright (C) 2009-2011 Texas Instruments
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+ * Author: Mythri P K <mythripk@ti.com>
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+ * Mayuresh Janorkar <mayur@ti.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 version 2 as published by
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+ * 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 WITHOUT
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+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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+ * more details.
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+ *
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+ * You should have received a copy of the GNU General Public License along with
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+ * this program. If not, see <http://www.gnu.org/licenses/>.
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+ */
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+
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+#include <linux/input.h>
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+#include <linux/platform_device.h>
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+#include <linux/interrupt.h>
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+#include <linux/firmware.h>
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+#include <linux/slab.h>
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+#include <linux/mutex.h>
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+#include <linux/i2c.h>
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+#include <linux/delay.h>
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+#include <linux/gpio.h>
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+
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+#include <video/omapdss.h>
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+#include <video/omap-panel-picodlp.h>
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+
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+#include "panel-picodlp.h"
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+
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+struct picodlp_data {
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+ struct mutex lock;
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+ struct i2c_client *picodlp_i2c_client;
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+};
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+
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+static struct i2c_board_info picodlp_i2c_board_info = {
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+ I2C_BOARD_INFO("picodlp_i2c_driver", 0x1b),
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+};
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+
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+struct picodlp_i2c_data {
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+ struct mutex xfer_lock;
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+};
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+
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+static struct i2c_device_id picodlp_i2c_id[] = {
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+ { "picodlp_i2c_driver", 0 },
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+};
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+
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+struct picodlp_i2c_command {
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+ u8 reg;
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+ u32 value;
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+};
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+
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+static struct omap_video_timings pico_ls_timings = {
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+ .x_res = 864,
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+ .y_res = 480,
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+ .hsw = 7,
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+ .hfp = 11,
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+ .hbp = 7,
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+
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+ .pixel_clock = 19200,
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+
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+ .vsw = 2,
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+ .vfp = 3,
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+ .vbp = 14,
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+};
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+
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+static inline struct picodlp_panel_data
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+ *get_panel_data(const struct omap_dss_device *dssdev)
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+{
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+ return (struct picodlp_panel_data *) dssdev->data;
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+}
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+
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+static u32 picodlp_i2c_read(struct i2c_client *client, u8 reg)
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+{
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+ u8 read_cmd[] = {READ_REG_SELECT, reg}, data[4];
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+ struct picodlp_i2c_data *picodlp_i2c_data = i2c_get_clientdata(client);
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+ struct i2c_msg msg[2];
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+
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+ mutex_lock(&picodlp_i2c_data->xfer_lock);
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+
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+ msg[0].addr = client->addr;
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+ msg[0].flags = 0;
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+ msg[0].len = 2;
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+ msg[0].buf = read_cmd;
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+
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+ msg[1].addr = client->addr;
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+ msg[1].flags = I2C_M_RD;
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+ msg[1].len = 4;
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+ msg[1].buf = data;
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+
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+ i2c_transfer(client->adapter, msg, 2);
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+ mutex_unlock(&picodlp_i2c_data->xfer_lock);
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+ return (data[3] | (data[2] << 8) | (data[1] << 16) | (data[0] << 24));
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+}
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+
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+static int picodlp_i2c_write_block(struct i2c_client *client,
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+ u8 *data, int len)
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+{
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+ struct i2c_msg msg;
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+ int i, r, msg_count = 1;
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+
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+ struct picodlp_i2c_data *picodlp_i2c_data = i2c_get_clientdata(client);
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+
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+ if (len < 1 || len > 32) {
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+ dev_err(&client->dev,
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+ "too long syn_write_block len %d\n", len);
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+ return -EIO;
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+ }
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+ mutex_lock(&picodlp_i2c_data->xfer_lock);
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+
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+ msg.addr = client->addr;
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+ msg.flags = 0;
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+ msg.len = len;
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+ msg.buf = data;
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+ r = i2c_transfer(client->adapter, &msg, msg_count);
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+ mutex_unlock(&picodlp_i2c_data->xfer_lock);
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+
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+ /*
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+ * i2c_transfer returns:
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+ * number of messages sent in case of success
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+ * a negative error number in case of failure
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+ */
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+ if (r != msg_count)
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+ goto err;
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+
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+ /* In case of success */
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+ for (i = 0; i < len; i++)
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+ dev_dbg(&client->dev,
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+ "addr %x bw 0x%02x[%d]: 0x%02x\n",
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+ client->addr, data[0] + i, i, data[i]);
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+
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+ return 0;
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+err:
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+ dev_err(&client->dev, "picodlp_i2c_write error\n");
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+ return r;
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+}
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+
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+static int picodlp_i2c_write(struct i2c_client *client, u8 reg, u32 value)
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+{
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+ u8 data[5];
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+ int i;
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+
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+ data[0] = reg;
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+ for (i = 1; i < 5; i++)
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+ data[i] = (value >> (32 - (i) * 8)) & 0xFF;
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+
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+ return picodlp_i2c_write_block(client, data, 5);
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+}
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+
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+static int picodlp_i2c_write_array(struct i2c_client *client,
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+ const struct picodlp_i2c_command commands[],
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+ int count)
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+{
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+ int i, r = 0;
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+ for (i = 0; i < count; i++) {
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+ r = picodlp_i2c_write(client, commands[i].reg,
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+ commands[i].value);
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+ if (r)
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+ return r;
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+ }
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+ return r;
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+}
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+
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+static int picodlp_wait_for_dma_done(struct i2c_client *client)
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+{
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+ u8 trial = 100;
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+
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+ do {
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+ msleep(1);
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+ if (!trial--)
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+ return -ETIMEDOUT;
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+ } while (picodlp_i2c_read(client, MAIN_STATUS) & DMA_STATUS);
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+
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+ return 0;
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+}
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+
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+/**
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+ * picodlp_i2c_init: i2c_initialization routine
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+ * client: i2c_client for communication
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+ *
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+ * return
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+ * 0 : Success, no error
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+ * error code : Failure
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+ */
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+static int picodlp_i2c_init(struct i2c_client *client)
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+{
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+ int r;
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+ static const struct picodlp_i2c_command init_cmd_set1[] = {
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+ {SOFT_RESET, 1},
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+ {DMD_PARK_TRIGGER, 1},
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+ {MISC_REG, 5},
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+ {SEQ_CONTROL, 0},
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+ {SEQ_VECTOR, 0x100},
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+ {DMD_BLOCK_COUNT, 7},
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+ {DMD_VCC_CONTROL, 0x109},
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+ {DMD_PARK_PULSE_COUNT, 0xA},
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+ {DMD_PARK_PULSE_WIDTH, 0xB},
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+ {DMD_PARK_DELAY, 0x2ED},
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+ {DMD_SHADOW_ENABLE, 0},
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+ {FLASH_OPCODE, 0xB},
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+ {FLASH_DUMMY_BYTES, 1},
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+ {FLASH_ADDR_BYTES, 3},
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+ {PBC_CONTROL, 0},
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+ {FLASH_START_ADDR, CMT_LUT_0_START_ADDR},
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+ {FLASH_READ_BYTES, CMT_LUT_0_SIZE},
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+ {CMT_SPLASH_LUT_START_ADDR, 0},
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+ {CMT_SPLASH_LUT_DEST_SELECT, CMT_LUT_ALL},
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+ {PBC_CONTROL, 1},
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+ };
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+
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+ static const struct picodlp_i2c_command init_cmd_set2[] = {
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+ {PBC_CONTROL, 0},
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+ {CMT_SPLASH_LUT_DEST_SELECT, 0},
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+ {PBC_CONTROL, 0},
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+ {FLASH_START_ADDR, SEQUENCE_0_START_ADDR},
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+ {FLASH_READ_BYTES, SEQUENCE_0_SIZE},
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+ {SEQ_RESET_LUT_START_ADDR, 0},
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+ {SEQ_RESET_LUT_DEST_SELECT, SEQ_SEQ_LUT},
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+ {PBC_CONTROL, 1},
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+ };
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+
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+ static const struct picodlp_i2c_command init_cmd_set3[] = {
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+ {PBC_CONTROL, 0},
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+ {SEQ_RESET_LUT_DEST_SELECT, 0},
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+ {PBC_CONTROL, 0},
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+ {FLASH_START_ADDR, DRC_TABLE_0_START_ADDR},
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+ {FLASH_READ_BYTES, DRC_TABLE_0_SIZE},
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+ {SEQ_RESET_LUT_START_ADDR, 0},
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+ {SEQ_RESET_LUT_DEST_SELECT, SEQ_DRC_LUT_ALL},
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+ {PBC_CONTROL, 1},
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+ };
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+
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+ static const struct picodlp_i2c_command init_cmd_set4[] = {
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+ {PBC_CONTROL, 0},
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+ {SEQ_RESET_LUT_DEST_SELECT, 0},
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+ {SDC_ENABLE, 1},
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+ {AGC_CTRL, 7},
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+ {CCA_C1A, 0x100},
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+ {CCA_C1B, 0x0},
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+ {CCA_C1C, 0x0},
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+ {CCA_C2A, 0x0},
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+ {CCA_C2B, 0x100},
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+ {CCA_C2C, 0x0},
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+ {CCA_C3A, 0x0},
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+ {CCA_C3B, 0x0},
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+ {CCA_C3C, 0x100},
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+ {CCA_C7A, 0x100},
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+ {CCA_C7B, 0x100},
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+ {CCA_C7C, 0x100},
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+ {CCA_ENABLE, 1},
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+ {CPU_IF_MODE, 1},
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+ {SHORT_FLIP, 1},
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+ {CURTAIN_CONTROL, 0},
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+ {DMD_PARK_TRIGGER, 0},
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+ {R_DRIVE_CURRENT, 0x298},
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+ {G_DRIVE_CURRENT, 0x298},
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+ {B_DRIVE_CURRENT, 0x298},
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+ {RGB_DRIVER_ENABLE, 7},
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+ {SEQ_CONTROL, 0},
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+ {ACTGEN_CONTROL, 0x10},
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+ {SEQUENCE_MODE, SEQ_LOCK},
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+ {DATA_FORMAT, RGB888},
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+ {INPUT_RESOLUTION, WVGA_864_LANDSCAPE},
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+ {INPUT_SOURCE, PARALLEL_RGB},
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+ {CPU_IF_SYNC_METHOD, 1},
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+ {SEQ_CONTROL, 1}
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+ };
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+
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+ r = picodlp_i2c_write_array(client, init_cmd_set1,
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+ ARRAY_SIZE(init_cmd_set1));
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+ if (r)
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+ return r;
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+
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+ r = picodlp_wait_for_dma_done(client);
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+ if (r)
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+ return r;
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+
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+ r = picodlp_i2c_write_array(client, init_cmd_set2,
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+ ARRAY_SIZE(init_cmd_set2));
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+ if (r)
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+ return r;
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+
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+ r = picodlp_wait_for_dma_done(client);
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+ if (r)
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+ return r;
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+
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+ r = picodlp_i2c_write_array(client, init_cmd_set3,
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+ ARRAY_SIZE(init_cmd_set3));
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+ if (r)
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+ return r;
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+
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+ r = picodlp_wait_for_dma_done(client);
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+ if (r)
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+ return r;
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+
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+ r = picodlp_i2c_write_array(client, init_cmd_set4,
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+ ARRAY_SIZE(init_cmd_set4));
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+ if (r)
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+ return r;
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+
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+ return 0;
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+}
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+
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+static int picodlp_i2c_probe(struct i2c_client *client,
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+ const struct i2c_device_id *id)
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+{
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+ struct picodlp_i2c_data *picodlp_i2c_data;
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+
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+ picodlp_i2c_data = kzalloc(sizeof(struct picodlp_i2c_data), GFP_KERNEL);
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+
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+ if (!picodlp_i2c_data)
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+ return -ENOMEM;
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+
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+ mutex_init(&picodlp_i2c_data->xfer_lock);
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+ i2c_set_clientdata(client, picodlp_i2c_data);
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+
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+ return 0;
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+}
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+
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+static int picodlp_i2c_remove(struct i2c_client *client)
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+{
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+ struct picodlp_i2c_data *picodlp_i2c_data =
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+ i2c_get_clientdata(client);
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+ kfree(picodlp_i2c_data);
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+ return 0;
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+}
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+
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+static struct i2c_driver picodlp_i2c_driver = {
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+ .driver = {
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+ .name = "picodlp_i2c_driver",
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+ },
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+ .probe = picodlp_i2c_probe,
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+ .remove = picodlp_i2c_remove,
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+ .id_table = picodlp_i2c_id,
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+};
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+
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+static int picodlp_panel_power_on(struct omap_dss_device *dssdev)
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+{
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+ int r, trial = 100;
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+ struct picodlp_data *picod = dev_get_drvdata(&dssdev->dev);
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+ struct picodlp_panel_data *picodlp_pdata = get_panel_data(dssdev);
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+
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+ if (dssdev->platform_enable) {
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+ r = dssdev->platform_enable(dssdev);
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+ if (r)
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+ return r;
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+ }
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+
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+ gpio_set_value(picodlp_pdata->pwrgood_gpio, 0);
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+ msleep(1);
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+ gpio_set_value(picodlp_pdata->pwrgood_gpio, 1);
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+
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+ while (!gpio_get_value(picodlp_pdata->emu_done_gpio)) {
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+ if (!trial--) {
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+ dev_err(&dssdev->dev, "emu_done signal not"
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+ " going high\n");
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+ return -ETIMEDOUT;
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+ }
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+ msleep(5);
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+ }
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+ /*
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+ * As per dpp2600 programming guide,
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+ * it is required to sleep for 1000ms after emu_done signal goes high
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+ * then only i2c commands can be successfully sent to dpp2600
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+ */
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+ msleep(1000);
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+ if (omapdss_dpi_display_enable(dssdev)) {
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+ dev_err(&dssdev->dev, "failed to enable DPI\n");
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+ goto err1;
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+ }
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+ dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
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+
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+ r = picodlp_i2c_init(picod->picodlp_i2c_client);
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+ if (r)
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+ goto err;
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+
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+ return r;
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+err:
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+ omapdss_dpi_display_disable(dssdev);
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+err1:
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+ if (dssdev->platform_disable)
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+ dssdev->platform_disable(dssdev);
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+
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+ return r;
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+}
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+
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+static void picodlp_panel_power_off(struct omap_dss_device *dssdev)
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+{
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+ struct picodlp_panel_data *picodlp_pdata = get_panel_data(dssdev);
|
|
|
+
|
|
|
+ omapdss_dpi_display_disable(dssdev);
|
|
|
+
|
|
|
+ gpio_set_value(picodlp_pdata->emu_done_gpio, 0);
|
|
|
+ gpio_set_value(picodlp_pdata->pwrgood_gpio, 0);
|
|
|
+
|
|
|
+ if (dssdev->platform_disable)
|
|
|
+ dssdev->platform_disable(dssdev);
|
|
|
+}
|
|
|
+
|
|
|
+static int picodlp_panel_probe(struct omap_dss_device *dssdev)
|
|
|
+{
|
|
|
+ struct picodlp_data *picod;
|
|
|
+ struct picodlp_panel_data *picodlp_pdata = get_panel_data(dssdev);
|
|
|
+ struct i2c_adapter *adapter;
|
|
|
+ struct i2c_client *picodlp_i2c_client;
|
|
|
+ int r = 0, picodlp_adapter_id;
|
|
|
+
|
|
|
+ dssdev->panel.config = OMAP_DSS_LCD_TFT | OMAP_DSS_LCD_ONOFF |
|
|
|
+ OMAP_DSS_LCD_IHS | OMAP_DSS_LCD_IVS;
|
|
|
+ dssdev->panel.acb = 0x0;
|
|
|
+ dssdev->panel.timings = pico_ls_timings;
|
|
|
+
|
|
|
+ picod = kzalloc(sizeof(struct picodlp_data), GFP_KERNEL);
|
|
|
+ if (!picod)
|
|
|
+ return -ENOMEM;
|
|
|
+
|
|
|
+ mutex_init(&picod->lock);
|
|
|
+
|
|
|
+ picodlp_adapter_id = picodlp_pdata->picodlp_adapter_id;
|
|
|
+
|
|
|
+ adapter = i2c_get_adapter(picodlp_adapter_id);
|
|
|
+ if (!adapter) {
|
|
|
+ dev_err(&dssdev->dev, "can't get i2c adapter\n");
|
|
|
+ r = -ENODEV;
|
|
|
+ goto err;
|
|
|
+ }
|
|
|
+
|
|
|
+ picodlp_i2c_client = i2c_new_device(adapter, &picodlp_i2c_board_info);
|
|
|
+ if (!picodlp_i2c_client) {
|
|
|
+ dev_err(&dssdev->dev, "can't add i2c device::"
|
|
|
+ " picodlp_i2c_client is NULL\n");
|
|
|
+ r = -ENODEV;
|
|
|
+ goto err;
|
|
|
+ }
|
|
|
+
|
|
|
+ picod->picodlp_i2c_client = picodlp_i2c_client;
|
|
|
+
|
|
|
+ dev_set_drvdata(&dssdev->dev, picod);
|
|
|
+ return r;
|
|
|
+err:
|
|
|
+ kfree(picod);
|
|
|
+ return r;
|
|
|
+}
|
|
|
+
|
|
|
+static void picodlp_panel_remove(struct omap_dss_device *dssdev)
|
|
|
+{
|
|
|
+ struct picodlp_data *picod = dev_get_drvdata(&dssdev->dev);
|
|
|
+
|
|
|
+ i2c_unregister_device(picod->picodlp_i2c_client);
|
|
|
+ dev_set_drvdata(&dssdev->dev, NULL);
|
|
|
+ dev_dbg(&dssdev->dev, "removing picodlp panel\n");
|
|
|
+
|
|
|
+ kfree(picod);
|
|
|
+}
|
|
|
+
|
|
|
+static int picodlp_panel_enable(struct omap_dss_device *dssdev)
|
|
|
+{
|
|
|
+ struct picodlp_data *picod = dev_get_drvdata(&dssdev->dev);
|
|
|
+ int r;
|
|
|
+
|
|
|
+ dev_dbg(&dssdev->dev, "enabling picodlp panel\n");
|
|
|
+
|
|
|
+ mutex_lock(&picod->lock);
|
|
|
+ if (dssdev->state != OMAP_DSS_DISPLAY_DISABLED) {
|
|
|
+ mutex_unlock(&picod->lock);
|
|
|
+ return -EINVAL;
|
|
|
+ }
|
|
|
+
|
|
|
+ r = picodlp_panel_power_on(dssdev);
|
|
|
+ mutex_unlock(&picod->lock);
|
|
|
+
|
|
|
+ return r;
|
|
|
+}
|
|
|
+
|
|
|
+static void picodlp_panel_disable(struct omap_dss_device *dssdev)
|
|
|
+{
|
|
|
+ struct picodlp_data *picod = dev_get_drvdata(&dssdev->dev);
|
|
|
+
|
|
|
+ mutex_lock(&picod->lock);
|
|
|
+ /* Turn off DLP Power */
|
|
|
+ if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE)
|
|
|
+ picodlp_panel_power_off(dssdev);
|
|
|
+
|
|
|
+ dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
|
|
|
+ mutex_unlock(&picod->lock);
|
|
|
+
|
|
|
+ dev_dbg(&dssdev->dev, "disabling picodlp panel\n");
|
|
|
+}
|
|
|
+
|
|
|
+static int picodlp_panel_suspend(struct omap_dss_device *dssdev)
|
|
|
+{
|
|
|
+ struct picodlp_data *picod = dev_get_drvdata(&dssdev->dev);
|
|
|
+
|
|
|
+ mutex_lock(&picod->lock);
|
|
|
+ /* Turn off DLP Power */
|
|
|
+ if (dssdev->state != OMAP_DSS_DISPLAY_ACTIVE) {
|
|
|
+ mutex_unlock(&picod->lock);
|
|
|
+ dev_err(&dssdev->dev, "unable to suspend picodlp panel,"
|
|
|
+ " panel is not ACTIVE\n");
|
|
|
+ return -EINVAL;
|
|
|
+ }
|
|
|
+
|
|
|
+ picodlp_panel_power_off(dssdev);
|
|
|
+
|
|
|
+ dssdev->state = OMAP_DSS_DISPLAY_SUSPENDED;
|
|
|
+ mutex_unlock(&picod->lock);
|
|
|
+
|
|
|
+ dev_dbg(&dssdev->dev, "suspending picodlp panel\n");
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+static int picodlp_panel_resume(struct omap_dss_device *dssdev)
|
|
|
+{
|
|
|
+ struct picodlp_data *picod = dev_get_drvdata(&dssdev->dev);
|
|
|
+ int r;
|
|
|
+
|
|
|
+ mutex_lock(&picod->lock);
|
|
|
+ if (dssdev->state != OMAP_DSS_DISPLAY_SUSPENDED) {
|
|
|
+ mutex_unlock(&picod->lock);
|
|
|
+ dev_err(&dssdev->dev, "unable to resume picodlp panel,"
|
|
|
+ " panel is not ACTIVE\n");
|
|
|
+ return -EINVAL;
|
|
|
+ }
|
|
|
+
|
|
|
+ r = picodlp_panel_power_on(dssdev);
|
|
|
+ mutex_unlock(&picod->lock);
|
|
|
+ dev_dbg(&dssdev->dev, "resuming picodlp panel\n");
|
|
|
+ return r;
|
|
|
+}
|
|
|
+
|
|
|
+static void picodlp_get_resolution(struct omap_dss_device *dssdev,
|
|
|
+ u16 *xres, u16 *yres)
|
|
|
+{
|
|
|
+ *xres = dssdev->panel.timings.x_res;
|
|
|
+ *yres = dssdev->panel.timings.y_res;
|
|
|
+}
|
|
|
+
|
|
|
+static struct omap_dss_driver picodlp_driver = {
|
|
|
+ .probe = picodlp_panel_probe,
|
|
|
+ .remove = picodlp_panel_remove,
|
|
|
+
|
|
|
+ .enable = picodlp_panel_enable,
|
|
|
+ .disable = picodlp_panel_disable,
|
|
|
+
|
|
|
+ .get_resolution = picodlp_get_resolution,
|
|
|
+
|
|
|
+ .suspend = picodlp_panel_suspend,
|
|
|
+ .resume = picodlp_panel_resume,
|
|
|
+
|
|
|
+ .driver = {
|
|
|
+ .name = "picodlp_panel",
|
|
|
+ .owner = THIS_MODULE,
|
|
|
+ },
|
|
|
+};
|
|
|
+
|
|
|
+static int __init picodlp_init(void)
|
|
|
+{
|
|
|
+ int r = 0;
|
|
|
+
|
|
|
+ r = i2c_add_driver(&picodlp_i2c_driver);
|
|
|
+ if (r) {
|
|
|
+ printk(KERN_WARNING "picodlp_i2c_driver" \
|
|
|
+ " registration failed\n");
|
|
|
+ return r;
|
|
|
+ }
|
|
|
+
|
|
|
+ r = omap_dss_register_driver(&picodlp_driver);
|
|
|
+ if (r)
|
|
|
+ i2c_del_driver(&picodlp_i2c_driver);
|
|
|
+
|
|
|
+ return r;
|
|
|
+}
|
|
|
+
|
|
|
+static void __exit picodlp_exit(void)
|
|
|
+{
|
|
|
+ i2c_del_driver(&picodlp_i2c_driver);
|
|
|
+ omap_dss_unregister_driver(&picodlp_driver);
|
|
|
+}
|
|
|
+
|
|
|
+module_init(picodlp_init);
|
|
|
+module_exit(picodlp_exit);
|
|
|
+
|
|
|
+MODULE_AUTHOR("Mythri P K <mythripk@ti.com>");
|
|
|
+MODULE_DESCRIPTION("picodlp driver");
|
|
|
+MODULE_LICENSE("GPL");
|