picodlp panel driver is required for driving DLP dpp2600. It consists of a dss driver and an i2c_client. i2c_client is required for sending commands to dpp (DLP Pico Projector). The power-up sequence consists of: Setting PWRGOOD to a logic low state. Once power is stable and thus the DPP2600 is stable, then PWRGOOD should be deactivated (Set to a logic high). The DPP2600 will then perform a power-up initialization routine that will first configure and lock its PLL followed by loading self configuration data from external flash. DPP2600 would be activated and the EMU_DONE signal will be driven high. After this once internal initialization routine, which will take approximately 510ms, i2c commands can be sent. To know more please visit: http://www.omappedia.org/wiki/PicoDLP_projector_guide Signed-off-by: Mayuresh Janorkar <mayur@xxxxxx> --- Changes since v2: Merged panel picodlp patches into a single patch Introduced DMA_DONE polling between flash transfer Changed GPIO handling Reduced sleeps drivers/video/omap2/displays/Kconfig | 7 + drivers/video/omap2/displays/Makefile | 1 + drivers/video/omap2/displays/panel-picodlp.c | 627 ++++++++++++++++++++++++++ 3 files changed, 635 insertions(+), 0 deletions(-) create mode 100644 drivers/video/omap2/displays/panel-picodlp.c diff --git a/drivers/video/omap2/displays/Kconfig b/drivers/video/omap2/displays/Kconfig index 609a280..0b05593 100644 --- a/drivers/video/omap2/displays/Kconfig +++ b/drivers/video/omap2/displays/Kconfig @@ -30,6 +30,13 @@ config PANEL_NEC_NL8048HL11_01B This NEC NL8048HL11-01B panel is TFT LCD used in the Zoom2/3/3630 sdp boards. +config PANEL_PICODLP + tristate "OMAP PICO DLP Panel" + depends on OMAP2_DSS + help + Projector Panel used in TI's SDP4430 and EVM boards + For more info please visit http://www.dlp.com/projector/ + config PANEL_TAAL tristate "Taal DSI Panel" depends on OMAP2_DSS_DSI diff --git a/drivers/video/omap2/displays/Makefile b/drivers/video/omap2/displays/Makefile index 0f601ab..d90f73c 100644 --- a/drivers/video/omap2/displays/Makefile +++ b/drivers/video/omap2/displays/Makefile @@ -4,5 +4,6 @@ obj-$(CONFIG_PANEL_SHARP_LS037V7DW01) += panel-sharp-ls037v7dw01.o obj-$(CONFIG_PANEL_NEC_NL8048HL11_01B) += panel-nec-nl8048hl11-01b.o obj-$(CONFIG_PANEL_TAAL) += panel-taal.o +obj-$(CONFIG_PANEL_PICODLP) += panel-picodlp.o obj-$(CONFIG_PANEL_TPO_TD043MTEA1) += panel-tpo-td043mtea1.o obj-$(CONFIG_PANEL_ACX565AKM) += panel-acx565akm.o diff --git a/drivers/video/omap2/displays/panel-picodlp.c b/drivers/video/omap2/displays/panel-picodlp.c new file mode 100644 index 0000000..432f987 --- /dev/null +++ b/drivers/video/omap2/displays/panel-picodlp.c @@ -0,0 +1,627 @@ +/* + + * picodlp panel driver + * picodlp_i2c_driver: i2c_client driver + * + * Copyright (C) 2009-2011 Texas Instruments + * Author: Mythri P K <mythripk@xxxxxx> + * Mayuresh Janorkar <mayur@xxxxxx> + * + * 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/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 <plat/display.h> +#include <plat/panel-picodlp.h> + +#include "panel-picodlp.h" + +#define DRIVER_NAME "picodlp_i2c_driver" + +/* This defines the minit of data which is allowed into single write block */ +#define MAX_I2C_WRITE_BLOCK_SIZE 32 +#define PICO_MAJOR 1 /* 2 bits */ +#define PICO_MINOR 1 /* 2 bits */ +#define MAX_TRIAL_VALUE 50 + +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; +}; + +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 > MAX_I2C_WRITE_BLOCK_SIZE) { + 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 + * i2c controller might timeout, in such a case sleep for sometime + * and then retry + */ + 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 bool picodlp_wait_for_dma_done(struct i2c_client *client) +{ + u8 trial = MAX_TRIAL_VALUE; + + 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, (PICO_MAJOR << 2 | PICO_MINOR)}, + {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} + }; + + msleep(510); + 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; + + 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); + i2c_unregister_device(client); + 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 = 0, trial = MAX_TRIAL_VALUE; + struct picodlp_data *picod = dev_get_drvdata(&dssdev->dev); + struct picodlp_panel_data *picodlp_pdata; + struct picodlp_i2c_data *picodlp_i2c_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 down\n"); + return -ETIMEDOUT; + } + msleep(5); + } + + r = omapdss_dpi_display_enable(dssdev); + if (r) { + dev_err(&dssdev->dev, "failed to enable DPI\n"); + goto err; + } + dssdev->state = OMAP_DSS_DISPLAY_ACTIVE; + + picodlp_i2c_data = + i2c_get_clientdata(picod->picodlp_i2c_client); + + r = picodlp_i2c_init(picod->picodlp_i2c_client); + if (r) + goto err; + + return r; +err: + 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; + struct picodlp_i2c_data *picodlp_i2c_data; + struct gpio picodlp_gpios[] = { + {picodlp_pdata->emu_done_gpio, GPIOF_IN, "DLP EMU DONE"}, + {picodlp_pdata->pwrgood_gpio, GPIOF_INIT_LOW, "DLP PWRGOOD"}, + }; + + 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); + + r = gpio_request_array(picodlp_gpios, ARRAY_SIZE(picodlp_gpios)); + if (r) { + dev_err(&dssdev->dev, "can't get dlp gpios\n"); + goto err; + } + + 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; + + picodlp_i2c_data = + i2c_get_clientdata(picod->picodlp_i2c_client); + + mutex_init(&picodlp_i2c_data->xfer_lock); + dev_set_drvdata(&dssdev->dev, picod); + return r; + +err: + gpio_free_array(picodlp_gpios, ARRAY_SIZE(picodlp_gpios)); + kfree(picod); + return r; +} + +static void picodlp_panel_remove(struct omap_dss_device *dssdev) +{ + struct picodlp_data *picod = dev_get_drvdata(&dssdev->dev); + struct picodlp_panel_data *picodlp_pdata = get_panel_data(dssdev); + struct gpio picodlp_gpios[] = { + {picodlp_pdata->emu_done_gpio, GPIOF_IN, "DLP EMU DONE"}, + {picodlp_pdata->pwrgood_gpio, GPIOF_INIT_LOW, "DLP PWRGOOD"}, + }; + + dev_set_drvdata(&dssdev->dev, NULL); + dev_dbg(&dssdev->dev, "removing picodlp panel\n"); + + gpio_free_array(picodlp_gpios, ARRAY_SIZE(picodlp_gpios)); + + 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 DRIVER_NAME + "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@xxxxxx>"); +MODULE_DESCRIPTION("picodlp driver"); +MODULE_LICENSE("GPL"); -- 1.7.1 -- 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
