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path: root/drivers/video/omap2/displays/panel-picodlp.c
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Diffstat (limited to 'drivers/video/omap2/displays/panel-picodlp.c')
-rw-r--r--drivers/video/omap2/displays/panel-picodlp.c594
1 files changed, 594 insertions, 0 deletions
diff --git a/drivers/video/omap2/displays/panel-picodlp.c b/drivers/video/omap2/displays/panel-picodlp.c
new file mode 100644
index 0000000..98ebdad
--- /dev/null
+++ b/drivers/video/omap2/displays/panel-picodlp.c
@@ -0,0 +1,594 @@
+/*
+ * picodlp panel driver
+ * picodlp_i2c_driver: i2c_client driver
+ *
+ * Copyright (C) 2009-2011 Texas Instruments
+ * Author: Mythri P K <mythripk@ti.com>
+ * Mayuresh Janorkar <mayur@ti.com>
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/module.h>
+#include <linux/input.h>
+#include <linux/platform_device.h>
+#include <linux/interrupt.h>
+#include <linux/firmware.h>
+#include <linux/slab.h>
+#include <linux/mutex.h>
+#include <linux/i2c.h>
+#include <linux/delay.h>
+#include <linux/gpio.h>
+
+#include <video/omapdss.h>
+#include <video/omap-panel-picodlp.h>
+
+#include "panel-picodlp.h"
+
+struct picodlp_data {
+ struct mutex lock;
+ struct i2c_client *picodlp_i2c_client;
+};
+
+static struct i2c_board_info picodlp_i2c_board_info = {
+ I2C_BOARD_INFO("picodlp_i2c_driver", 0x1b),
+};
+
+struct picodlp_i2c_data {
+ struct mutex xfer_lock;
+};
+
+static struct i2c_device_id picodlp_i2c_id[] = {
+ { "picodlp_i2c_driver", 0 },
+};
+
+struct picodlp_i2c_command {
+ u8 reg;
+ u32 value;
+};
+
+static struct omap_video_timings pico_ls_timings = {
+ .x_res = 864,
+ .y_res = 480,
+ .hsw = 7,
+ .hfp = 11,
+ .hbp = 7,
+
+ .pixel_clock = 19200,
+
+ .vsw = 2,
+ .vfp = 3,
+ .vbp = 14,
+};
+
+static inline struct picodlp_panel_data
+ *get_panel_data(const struct omap_dss_device *dssdev)
+{
+ return (struct picodlp_panel_data *) dssdev->data;
+}
+
+static u32 picodlp_i2c_read(struct i2c_client *client, u8 reg)
+{
+ u8 read_cmd[] = {READ_REG_SELECT, reg}, data[4];
+ struct picodlp_i2c_data *picodlp_i2c_data = i2c_get_clientdata(client);
+ struct i2c_msg msg[2];
+
+ mutex_lock(&picodlp_i2c_data->xfer_lock);
+
+ msg[0].addr = client->addr;
+ msg[0].flags = 0;
+ msg[0].len = 2;
+ msg[0].buf = read_cmd;
+
+ msg[1].addr = client->addr;
+ msg[1].flags = I2C_M_RD;
+ msg[1].len = 4;
+ msg[1].buf = data;
+
+ i2c_transfer(client->adapter, msg, 2);
+ mutex_unlock(&picodlp_i2c_data->xfer_lock);
+ return (data[3] | (data[2] << 8) | (data[1] << 16) | (data[0] << 24));
+}
+
+static int picodlp_i2c_write_block(struct i2c_client *client,
+ u8 *data, int len)
+{
+ struct i2c_msg msg;
+ int i, r, msg_count = 1;
+
+ struct picodlp_i2c_data *picodlp_i2c_data = i2c_get_clientdata(client);
+
+ if (len < 1 || len > 32) {
+ dev_err(&client->dev,
+ "too long syn_write_block len %d\n", len);
+ return -EIO;
+ }
+ mutex_lock(&picodlp_i2c_data->xfer_lock);
+
+ msg.addr = client->addr;
+ msg.flags = 0;
+ msg.len = len;
+ msg.buf = data;
+ r = i2c_transfer(client->adapter, &msg, msg_count);
+ mutex_unlock(&picodlp_i2c_data->xfer_lock);
+
+ /*
+ * i2c_transfer returns:
+ * number of messages sent in case of success
+ * a negative error number in case of failure
+ */
+ if (r != msg_count)
+ goto err;
+
+ /* In case of success */
+ for (i = 0; i < len; i++)
+ dev_dbg(&client->dev,
+ "addr %x bw 0x%02x[%d]: 0x%02x\n",
+ client->addr, data[0] + i, i, data[i]);
+
+ return 0;
+err:
+ dev_err(&client->dev, "picodlp_i2c_write error\n");
+ return r;
+}
+
+static int picodlp_i2c_write(struct i2c_client *client, u8 reg, u32 value)
+{
+ u8 data[5];
+ int i;
+
+ data[0] = reg;
+ for (i = 1; i < 5; i++)
+ data[i] = (value >> (32 - (i) * 8)) & 0xFF;
+
+ return picodlp_i2c_write_block(client, data, 5);
+}
+
+static int picodlp_i2c_write_array(struct i2c_client *client,
+ const struct picodlp_i2c_command commands[],
+ int count)
+{
+ int i, r = 0;
+ for (i = 0; i < count; i++) {
+ r = picodlp_i2c_write(client, commands[i].reg,
+ commands[i].value);
+ if (r)
+ return r;
+ }
+ return r;
+}
+
+static int picodlp_wait_for_dma_done(struct i2c_client *client)
+{
+ u8 trial = 100;
+
+ do {
+ msleep(1);
+ if (!trial--)
+ return -ETIMEDOUT;
+ } while (picodlp_i2c_read(client, MAIN_STATUS) & DMA_STATUS);
+
+ return 0;
+}
+
+/**
+ * picodlp_i2c_init: i2c_initialization routine
+ * client: i2c_client for communication
+ *
+ * return
+ * 0 : Success, no error
+ * error code : Failure
+ */
+static int picodlp_i2c_init(struct i2c_client *client)
+{
+ int r;
+ static const struct picodlp_i2c_command init_cmd_set1[] = {
+ {SOFT_RESET, 1},
+ {DMD_PARK_TRIGGER, 1},
+ {MISC_REG, 5},
+ {SEQ_CONTROL, 0},
+ {SEQ_VECTOR, 0x100},
+ {DMD_BLOCK_COUNT, 7},
+ {DMD_VCC_CONTROL, 0x109},
+ {DMD_PARK_PULSE_COUNT, 0xA},
+ {DMD_PARK_PULSE_WIDTH, 0xB},
+ {DMD_PARK_DELAY, 0x2ED},
+ {DMD_SHADOW_ENABLE, 0},
+ {FLASH_OPCODE, 0xB},
+ {FLASH_DUMMY_BYTES, 1},
+ {FLASH_ADDR_BYTES, 3},
+ {PBC_CONTROL, 0},
+ {FLASH_START_ADDR, CMT_LUT_0_START_ADDR},
+ {FLASH_READ_BYTES, CMT_LUT_0_SIZE},
+ {CMT_SPLASH_LUT_START_ADDR, 0},
+ {CMT_SPLASH_LUT_DEST_SELECT, CMT_LUT_ALL},
+ {PBC_CONTROL, 1},
+ };
+
+ static const struct picodlp_i2c_command init_cmd_set2[] = {
+ {PBC_CONTROL, 0},
+ {CMT_SPLASH_LUT_DEST_SELECT, 0},
+ {PBC_CONTROL, 0},
+ {FLASH_START_ADDR, SEQUENCE_0_START_ADDR},
+ {FLASH_READ_BYTES, SEQUENCE_0_SIZE},
+ {SEQ_RESET_LUT_START_ADDR, 0},
+ {SEQ_RESET_LUT_DEST_SELECT, SEQ_SEQ_LUT},
+ {PBC_CONTROL, 1},
+ };
+
+ static const struct picodlp_i2c_command init_cmd_set3[] = {
+ {PBC_CONTROL, 0},
+ {SEQ_RESET_LUT_DEST_SELECT, 0},
+ {PBC_CONTROL, 0},
+ {FLASH_START_ADDR, DRC_TABLE_0_START_ADDR},
+ {FLASH_READ_BYTES, DRC_TABLE_0_SIZE},
+ {SEQ_RESET_LUT_START_ADDR, 0},
+ {SEQ_RESET_LUT_DEST_SELECT, SEQ_DRC_LUT_ALL},
+ {PBC_CONTROL, 1},
+ };
+
+ static const struct picodlp_i2c_command init_cmd_set4[] = {
+ {PBC_CONTROL, 0},
+ {SEQ_RESET_LUT_DEST_SELECT, 0},
+ {SDC_ENABLE, 1},
+ {AGC_CTRL, 7},
+ {CCA_C1A, 0x100},
+ {CCA_C1B, 0x0},
+ {CCA_C1C, 0x0},
+ {CCA_C2A, 0x0},
+ {CCA_C2B, 0x100},
+ {CCA_C2C, 0x0},
+ {CCA_C3A, 0x0},
+ {CCA_C3B, 0x0},
+ {CCA_C3C, 0x100},
+ {CCA_C7A, 0x100},
+ {CCA_C7B, 0x100},
+ {CCA_C7C, 0x100},
+ {CCA_ENABLE, 1},
+ {CPU_IF_MODE, 1},
+ {SHORT_FLIP, 1},
+ {CURTAIN_CONTROL, 0},
+ {DMD_PARK_TRIGGER, 0},
+ {R_DRIVE_CURRENT, 0x298},
+ {G_DRIVE_CURRENT, 0x298},
+ {B_DRIVE_CURRENT, 0x298},
+ {RGB_DRIVER_ENABLE, 7},
+ {SEQ_CONTROL, 0},
+ {ACTGEN_CONTROL, 0x10},
+ {SEQUENCE_MODE, SEQ_LOCK},
+ {DATA_FORMAT, RGB888},
+ {INPUT_RESOLUTION, WVGA_864_LANDSCAPE},
+ {INPUT_SOURCE, PARALLEL_RGB},
+ {CPU_IF_SYNC_METHOD, 1},
+ {SEQ_CONTROL, 1}
+ };
+
+ r = picodlp_i2c_write_array(client, init_cmd_set1,
+ ARRAY_SIZE(init_cmd_set1));
+ if (r)
+ return r;
+
+ r = picodlp_wait_for_dma_done(client);
+ if (r)
+ return r;
+
+ r = picodlp_i2c_write_array(client, init_cmd_set2,
+ ARRAY_SIZE(init_cmd_set2));
+ if (r)
+ return r;
+
+ r = picodlp_wait_for_dma_done(client);
+ if (r)
+ return r;
+
+ r = picodlp_i2c_write_array(client, init_cmd_set3,
+ ARRAY_SIZE(init_cmd_set3));
+ if (r)
+ return r;
+
+ r = picodlp_wait_for_dma_done(client);
+ if (r)
+ return r;
+
+ r = picodlp_i2c_write_array(client, init_cmd_set4,
+ ARRAY_SIZE(init_cmd_set4));
+ if (r)
+ return r;
+
+ return 0;
+}
+
+static int picodlp_i2c_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct picodlp_i2c_data *picodlp_i2c_data;
+
+ picodlp_i2c_data = kzalloc(sizeof(struct picodlp_i2c_data), GFP_KERNEL);
+
+ if (!picodlp_i2c_data)
+ return -ENOMEM;
+
+ mutex_init(&picodlp_i2c_data->xfer_lock);
+ i2c_set_clientdata(client, picodlp_i2c_data);
+
+ return 0;
+}
+
+static int picodlp_i2c_remove(struct i2c_client *client)
+{
+ struct picodlp_i2c_data *picodlp_i2c_data =
+ i2c_get_clientdata(client);
+ kfree(picodlp_i2c_data);
+ return 0;
+}
+
+static struct i2c_driver picodlp_i2c_driver = {
+ .driver = {
+ .name = "picodlp_i2c_driver",
+ },
+ .probe = picodlp_i2c_probe,
+ .remove = picodlp_i2c_remove,
+ .id_table = picodlp_i2c_id,
+};
+
+static int picodlp_panel_power_on(struct omap_dss_device *dssdev)
+{
+ int r, trial = 100;
+ struct picodlp_data *picod = dev_get_drvdata(&dssdev->dev);
+ struct picodlp_panel_data *picodlp_pdata = get_panel_data(dssdev);
+
+ if (dssdev->platform_enable) {
+ r = dssdev->platform_enable(dssdev);
+ if (r)
+ return r;
+ }
+
+ gpio_set_value(picodlp_pdata->pwrgood_gpio, 0);
+ msleep(1);
+ gpio_set_value(picodlp_pdata->pwrgood_gpio, 1);
+
+ while (!gpio_get_value(picodlp_pdata->emu_done_gpio)) {
+ if (!trial--) {
+ dev_err(&dssdev->dev, "emu_done signal not"
+ " going high\n");
+ return -ETIMEDOUT;
+ }
+ msleep(5);
+ }
+ /*
+ * As per dpp2600 programming guide,
+ * it is required to sleep for 1000ms after emu_done signal goes high
+ * then only i2c commands can be successfully sent to dpp2600
+ */
+ msleep(1000);
+ r = omapdss_dpi_display_enable(dssdev);
+ if (r) {
+ dev_err(&dssdev->dev, "failed to enable DPI\n");
+ goto err1;
+ }
+
+ r = picodlp_i2c_init(picod->picodlp_i2c_client);
+ if (r)
+ goto err;
+
+ dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
+
+ return r;
+err:
+ omapdss_dpi_display_disable(dssdev);
+err1:
+ if (dssdev->platform_disable)
+ dssdev->platform_disable(dssdev);
+
+ return r;
+}
+
+static void picodlp_panel_power_off(struct omap_dss_device *dssdev)
+{
+ 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");

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