Loading drivers/video/omap2/displays/Kconfig +6 −0 Original line number Original line Diff line number Diff line Loading @@ -13,4 +13,10 @@ config PANEL_SHARP_LS037V7DW01 help help LCD Panel used in TI's SDP3430 and EVM boards LCD Panel used in TI's SDP3430 and EVM boards config PANEL_TAAL tristate "Taal DSI Panel" depends on OMAP2_DSS_DSI help Taal DSI command mode panel from TPO. endmenu endmenu drivers/video/omap2/displays/Makefile +2 −0 Original line number Original line Diff line number Diff line obj-$(CONFIG_PANEL_GENERIC) += panel-generic.o obj-$(CONFIG_PANEL_GENERIC) += panel-generic.o obj-$(CONFIG_PANEL_SHARP_LS037V7DW01) += panel-sharp-ls037v7dw01.o obj-$(CONFIG_PANEL_SHARP_LS037V7DW01) += panel-sharp-ls037v7dw01.o obj-$(CONFIG_PANEL_TAAL) += panel-taal.o drivers/video/omap2/displays/panel-taal.c 0 → 100644 +1003 −0 Original line number Original line Diff line number Diff line /* * Taal DSI command mode panel * * Copyright (C) 2009 Nokia Corporation * Author: Tomi Valkeinen <tomi.valkeinen@nokia.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/>. */ /*#define DEBUG*/ #include <linux/module.h> #include <linux/delay.h> #include <linux/err.h> #include <linux/jiffies.h> #include <linux/sched.h> #include <linux/backlight.h> #include <linux/fb.h> #include <linux/interrupt.h> #include <linux/gpio.h> #include <linux/completion.h> #include <linux/workqueue.h> #include <plat/display.h> /* DSI Virtual channel. Hardcoded for now. */ #define TCH 0 #define DCS_READ_NUM_ERRORS 0x05 #define DCS_READ_POWER_MODE 0x0a #define DCS_READ_MADCTL 0x0b #define DCS_READ_PIXEL_FORMAT 0x0c #define DCS_RDDSDR 0x0f #define DCS_SLEEP_IN 0x10 #define DCS_SLEEP_OUT 0x11 #define DCS_DISPLAY_OFF 0x28 #define DCS_DISPLAY_ON 0x29 #define DCS_COLUMN_ADDR 0x2a #define DCS_PAGE_ADDR 0x2b #define DCS_MEMORY_WRITE 0x2c #define DCS_TEAR_OFF 0x34 #define DCS_TEAR_ON 0x35 #define DCS_MEM_ACC_CTRL 0x36 #define DCS_PIXEL_FORMAT 0x3a #define DCS_BRIGHTNESS 0x51 #define DCS_CTRL_DISPLAY 0x53 #define DCS_WRITE_CABC 0x55 #define DCS_READ_CABC 0x56 #define DCS_GET_ID1 0xda #define DCS_GET_ID2 0xdb #define DCS_GET_ID3 0xdc /* #define TAAL_USE_ESD_CHECK */ #define TAAL_ESD_CHECK_PERIOD msecs_to_jiffies(5000) struct taal_data { struct backlight_device *bldev; unsigned long hw_guard_end; /* next value of jiffies when we can * issue the next sleep in/out command */ unsigned long hw_guard_wait; /* max guard time in jiffies */ struct omap_dss_device *dssdev; bool enabled; u8 rotate; bool mirror; bool te_enabled; bool use_ext_te; struct completion te_completion; bool use_dsi_bl; bool cabc_broken; unsigned cabc_mode; bool intro_printed; struct workqueue_struct *esd_wq; struct delayed_work esd_work; }; static void taal_esd_work(struct work_struct *work); static void hw_guard_start(struct taal_data *td, int guard_msec) { td->hw_guard_wait = msecs_to_jiffies(guard_msec); td->hw_guard_end = jiffies + td->hw_guard_wait; } static void hw_guard_wait(struct taal_data *td) { unsigned long wait = td->hw_guard_end - jiffies; if ((long)wait > 0 && wait <= td->hw_guard_wait) { set_current_state(TASK_UNINTERRUPTIBLE); schedule_timeout(wait); } } static int taal_dcs_read_1(u8 dcs_cmd, u8 *data) { int r; u8 buf[1]; r = dsi_vc_dcs_read(TCH, dcs_cmd, buf, 1); if (r < 0) return r; *data = buf[0]; return 0; } static int taal_dcs_write_0(u8 dcs_cmd) { return dsi_vc_dcs_write(TCH, &dcs_cmd, 1); } static int taal_dcs_write_1(u8 dcs_cmd, u8 param) { u8 buf[2]; buf[0] = dcs_cmd; buf[1] = param; return dsi_vc_dcs_write(TCH, buf, 2); } static int taal_sleep_in(struct taal_data *td) { u8 cmd; int r; hw_guard_wait(td); cmd = DCS_SLEEP_IN; r = dsi_vc_dcs_write_nosync(TCH, &cmd, 1); if (r) return r; hw_guard_start(td, 120); msleep(5); return 0; } static int taal_sleep_out(struct taal_data *td) { int r; hw_guard_wait(td); r = taal_dcs_write_0(DCS_SLEEP_OUT); if (r) return r; hw_guard_start(td, 120); msleep(5); return 0; } static int taal_get_id(u8 *id1, u8 *id2, u8 *id3) { int r; r = taal_dcs_read_1(DCS_GET_ID1, id1); if (r) return r; r = taal_dcs_read_1(DCS_GET_ID2, id2); if (r) return r; r = taal_dcs_read_1(DCS_GET_ID3, id3); if (r) return r; return 0; } static int taal_set_addr_mode(u8 rotate, bool mirror) { int r; u8 mode; int b5, b6, b7; r = taal_dcs_read_1(DCS_READ_MADCTL, &mode); if (r) return r; switch (rotate) { default: case 0: b7 = 0; b6 = 0; b5 = 0; break; case 1: b7 = 0; b6 = 1; b5 = 1; break; case 2: b7 = 1; b6 = 1; b5 = 0; break; case 3: b7 = 1; b6 = 0; b5 = 1; break; } if (mirror) b6 = !b6; mode &= ~((1<<7) | (1<<6) | (1<<5)); mode |= (b7 << 7) | (b6 << 6) | (b5 << 5); return taal_dcs_write_1(DCS_MEM_ACC_CTRL, mode); } static int taal_set_update_window(u16 x, u16 y, u16 w, u16 h) { int r; u16 x1 = x; u16 x2 = x + w - 1; u16 y1 = y; u16 y2 = y + h - 1; u8 buf[5]; buf[0] = DCS_COLUMN_ADDR; buf[1] = (x1 >> 8) & 0xff; buf[2] = (x1 >> 0) & 0xff; buf[3] = (x2 >> 8) & 0xff; buf[4] = (x2 >> 0) & 0xff; r = dsi_vc_dcs_write_nosync(TCH, buf, sizeof(buf)); if (r) return r; buf[0] = DCS_PAGE_ADDR; buf[1] = (y1 >> 8) & 0xff; buf[2] = (y1 >> 0) & 0xff; buf[3] = (y2 >> 8) & 0xff; buf[4] = (y2 >> 0) & 0xff; r = dsi_vc_dcs_write_nosync(TCH, buf, sizeof(buf)); if (r) return r; dsi_vc_send_bta_sync(TCH); return r; } static int taal_bl_update_status(struct backlight_device *dev) { struct omap_dss_device *dssdev = dev_get_drvdata(&dev->dev); struct taal_data *td = dev_get_drvdata(&dssdev->dev); int r; int level; if (dev->props.fb_blank == FB_BLANK_UNBLANK && dev->props.power == FB_BLANK_UNBLANK) level = dev->props.brightness; else level = 0; dev_dbg(&dssdev->dev, "update brightness to %d\n", level); if (td->use_dsi_bl) { if (td->enabled) { dsi_bus_lock(); r = taal_dcs_write_1(DCS_BRIGHTNESS, level); dsi_bus_unlock(); if (r) return r; } } else { if (!dssdev->set_backlight) return -EINVAL; r = dssdev->set_backlight(dssdev, level); if (r) return r; } return 0; } static int taal_bl_get_intensity(struct backlight_device *dev) { if (dev->props.fb_blank == FB_BLANK_UNBLANK && dev->props.power == FB_BLANK_UNBLANK) return dev->props.brightness; return 0; } static struct backlight_ops taal_bl_ops = { .get_brightness = taal_bl_get_intensity, .update_status = taal_bl_update_status, }; static void taal_get_timings(struct omap_dss_device *dssdev, struct omap_video_timings *timings) { *timings = dssdev->panel.timings; } static void taal_get_resolution(struct omap_dss_device *dssdev, u16 *xres, u16 *yres) { struct taal_data *td = dev_get_drvdata(&dssdev->dev); if (td->rotate == 0 || td->rotate == 2) { *xres = dssdev->panel.timings.x_res; *yres = dssdev->panel.timings.y_res; } else { *yres = dssdev->panel.timings.x_res; *xres = dssdev->panel.timings.y_res; } } static irqreturn_t taal_te_isr(int irq, void *data) { struct omap_dss_device *dssdev = data; struct taal_data *td = dev_get_drvdata(&dssdev->dev); complete_all(&td->te_completion); return IRQ_HANDLED; } static ssize_t taal_num_errors_show(struct device *dev, struct device_attribute *attr, char *buf) { struct omap_dss_device *dssdev = to_dss_device(dev); struct taal_data *td = dev_get_drvdata(&dssdev->dev); u8 errors; int r; if (td->enabled) { dsi_bus_lock(); r = taal_dcs_read_1(DCS_READ_NUM_ERRORS, &errors); dsi_bus_unlock(); } else { r = -ENODEV; } if (r) return r; return snprintf(buf, PAGE_SIZE, "%d\n", errors); } static ssize_t taal_hw_revision_show(struct device *dev, struct device_attribute *attr, char *buf) { struct omap_dss_device *dssdev = to_dss_device(dev); struct taal_data *td = dev_get_drvdata(&dssdev->dev); u8 id1, id2, id3; int r; if (td->enabled) { dsi_bus_lock(); r = taal_get_id(&id1, &id2, &id3); dsi_bus_unlock(); } else { r = -ENODEV; } if (r) return r; return snprintf(buf, PAGE_SIZE, "%02x.%02x.%02x\n", id1, id2, id3); } static const char *cabc_modes[] = { "off", /* used also always when CABC is not supported */ "ui", "still-image", "moving-image", }; static ssize_t show_cabc_mode(struct device *dev, struct device_attribute *attr, char *buf) { struct omap_dss_device *dssdev = to_dss_device(dev); struct taal_data *td = dev_get_drvdata(&dssdev->dev); const char *mode_str; int mode; int len; mode = td->cabc_mode; mode_str = "unknown"; if (mode >= 0 && mode < ARRAY_SIZE(cabc_modes)) mode_str = cabc_modes[mode]; len = snprintf(buf, PAGE_SIZE, "%s\n", mode_str); return len < PAGE_SIZE - 1 ? len : PAGE_SIZE - 1; } static ssize_t store_cabc_mode(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct omap_dss_device *dssdev = to_dss_device(dev); struct taal_data *td = dev_get_drvdata(&dssdev->dev); int i; for (i = 0; i < ARRAY_SIZE(cabc_modes); i++) { if (sysfs_streq(cabc_modes[i], buf)) break; } if (i == ARRAY_SIZE(cabc_modes)) return -EINVAL; if (td->enabled) { dsi_bus_lock(); if (!td->cabc_broken) taal_dcs_write_1(DCS_WRITE_CABC, i); dsi_bus_unlock(); } td->cabc_mode = i; return count; } static ssize_t show_cabc_available_modes(struct device *dev, struct device_attribute *attr, char *buf) { int len; int i; for (i = 0, len = 0; len < PAGE_SIZE && i < ARRAY_SIZE(cabc_modes); i++) len += snprintf(&buf[len], PAGE_SIZE - len, "%s%s%s", i ? " " : "", cabc_modes[i], i == ARRAY_SIZE(cabc_modes) - 1 ? "\n" : ""); return len < PAGE_SIZE ? len : PAGE_SIZE - 1; } static DEVICE_ATTR(num_dsi_errors, S_IRUGO, taal_num_errors_show, NULL); static DEVICE_ATTR(hw_revision, S_IRUGO, taal_hw_revision_show, NULL); static DEVICE_ATTR(cabc_mode, S_IRUGO | S_IWUSR, show_cabc_mode, store_cabc_mode); static DEVICE_ATTR(cabc_available_modes, S_IRUGO, show_cabc_available_modes, NULL); static struct attribute *taal_attrs[] = { &dev_attr_num_dsi_errors.attr, &dev_attr_hw_revision.attr, &dev_attr_cabc_mode.attr, &dev_attr_cabc_available_modes.attr, NULL, }; static struct attribute_group taal_attr_group = { .attrs = taal_attrs, }; static int taal_probe(struct omap_dss_device *dssdev) { struct taal_data *td; struct backlight_device *bldev; int r; const struct omap_video_timings taal_panel_timings = { .x_res = 864, .y_res = 480, }; dev_dbg(&dssdev->dev, "probe\n"); dssdev->panel.config = OMAP_DSS_LCD_TFT; dssdev->panel.timings = taal_panel_timings; dssdev->ctrl.pixel_size = 24; td = kzalloc(sizeof(*td), GFP_KERNEL); if (!td) { r = -ENOMEM; goto err0; } td->dssdev = dssdev; td->esd_wq = create_singlethread_workqueue("taal_esd"); if (td->esd_wq == NULL) { dev_err(&dssdev->dev, "can't create ESD workqueue\n"); r = -ENOMEM; goto err2; } INIT_DELAYED_WORK_DEFERRABLE(&td->esd_work, taal_esd_work); dev_set_drvdata(&dssdev->dev, td); dssdev->get_timings = taal_get_timings; dssdev->get_resolution = taal_get_resolution; /* if no platform set_backlight() defined, presume DSI backlight * control */ if (!dssdev->set_backlight) td->use_dsi_bl = true; bldev = backlight_device_register("taal", &dssdev->dev, dssdev, &taal_bl_ops); if (IS_ERR(bldev)) { r = PTR_ERR(bldev); goto err1; } td->bldev = bldev; bldev->props.fb_blank = FB_BLANK_UNBLANK; bldev->props.power = FB_BLANK_UNBLANK; if (td->use_dsi_bl) { bldev->props.max_brightness = 255; bldev->props.brightness = 255; } else { bldev->props.max_brightness = 127; bldev->props.brightness = 127; } taal_bl_update_status(bldev); if (dssdev->phy.dsi.ext_te) { int gpio = dssdev->phy.dsi.ext_te_gpio; r = gpio_request(gpio, "taal irq"); if (r) { dev_err(&dssdev->dev, "GPIO request failed\n"); goto err3; } gpio_direction_input(gpio); r = request_irq(gpio_to_irq(gpio), taal_te_isr, IRQF_DISABLED | IRQF_TRIGGER_RISING, "taal vsync", dssdev); if (r) { dev_err(&dssdev->dev, "IRQ request failed\n"); gpio_free(gpio); goto err3; } init_completion(&td->te_completion); td->use_ext_te = true; } r = sysfs_create_group(&dssdev->dev.kobj, &taal_attr_group); if (r) { dev_err(&dssdev->dev, "failed to create sysfs files\n"); goto err4; } return 0; err4: if (td->use_ext_te) { int gpio = dssdev->phy.dsi.ext_te_gpio; free_irq(gpio_to_irq(gpio), dssdev); gpio_free(gpio); } err3: backlight_device_unregister(bldev); err2: cancel_delayed_work_sync(&td->esd_work); destroy_workqueue(td->esd_wq); err1: kfree(td); err0: return r; } static void taal_remove(struct omap_dss_device *dssdev) { struct taal_data *td = dev_get_drvdata(&dssdev->dev); struct backlight_device *bldev; dev_dbg(&dssdev->dev, "remove\n"); sysfs_remove_group(&dssdev->dev.kobj, &taal_attr_group); if (td->use_ext_te) { int gpio = dssdev->phy.dsi.ext_te_gpio; free_irq(gpio_to_irq(gpio), dssdev); gpio_free(gpio); } bldev = td->bldev; bldev->props.power = FB_BLANK_POWERDOWN; taal_bl_update_status(bldev); backlight_device_unregister(bldev); cancel_delayed_work_sync(&td->esd_work); destroy_workqueue(td->esd_wq); kfree(td); } static int taal_enable(struct omap_dss_device *dssdev) { struct taal_data *td = dev_get_drvdata(&dssdev->dev); u8 id1, id2, id3; int r; dev_dbg(&dssdev->dev, "enable\n"); if (dssdev->platform_enable) { r = dssdev->platform_enable(dssdev); if (r) return r; } /* it seems we have to wait a bit until taal is ready */ msleep(5); r = taal_sleep_out(td); if (r) goto err; r = taal_get_id(&id1, &id2, &id3); if (r) goto err; /* on early revisions CABC is broken */ if (id2 == 0x00 || id2 == 0xff || id2 == 0x81) td->cabc_broken = true; taal_dcs_write_1(DCS_BRIGHTNESS, 0xff); taal_dcs_write_1(DCS_CTRL_DISPLAY, (1<<2) | (1<<5)); /* BL | BCTRL */ taal_dcs_write_1(DCS_PIXEL_FORMAT, 0x7); /* 24bit/pixel */ taal_set_addr_mode(td->rotate, td->mirror); if (!td->cabc_broken) taal_dcs_write_1(DCS_WRITE_CABC, td->cabc_mode); taal_dcs_write_0(DCS_DISPLAY_ON); #ifdef TAAL_USE_ESD_CHECK queue_delayed_work(td->esd_wq, &td->esd_work, TAAL_ESD_CHECK_PERIOD); #endif td->enabled = 1; if (!td->intro_printed) { dev_info(&dssdev->dev, "revision %02x.%02x.%02x\n", id1, id2, id3); if (td->cabc_broken) dev_info(&dssdev->dev, "old Taal version, CABC disabled\n"); td->intro_printed = true; } return 0; err: if (dssdev->platform_disable) dssdev->platform_disable(dssdev); return r; } static void taal_disable(struct omap_dss_device *dssdev) { struct taal_data *td = dev_get_drvdata(&dssdev->dev); dev_dbg(&dssdev->dev, "disable\n"); cancel_delayed_work(&td->esd_work); taal_dcs_write_0(DCS_DISPLAY_OFF); taal_sleep_in(td); /* wait a bit so that the message goes through */ msleep(10); if (dssdev->platform_disable) dssdev->platform_disable(dssdev); td->enabled = 0; } static int taal_suspend(struct omap_dss_device *dssdev) { struct taal_data *td = dev_get_drvdata(&dssdev->dev); struct backlight_device *bldev = td->bldev; bldev->props.power = FB_BLANK_POWERDOWN; taal_bl_update_status(bldev); return 0; } static int taal_resume(struct omap_dss_device *dssdev) { struct taal_data *td = dev_get_drvdata(&dssdev->dev); struct backlight_device *bldev = td->bldev; bldev->props.power = FB_BLANK_UNBLANK; taal_bl_update_status(bldev); return 0; } static void taal_setup_update(struct omap_dss_device *dssdev, u16 x, u16 y, u16 w, u16 h) { taal_set_update_window(x, y, w, h); } static int taal_enable_te(struct omap_dss_device *dssdev, bool enable) { struct taal_data *td = dev_get_drvdata(&dssdev->dev); int r; td->te_enabled = enable; if (enable) r = taal_dcs_write_1(DCS_TEAR_ON, 0); else r = taal_dcs_write_0(DCS_TEAR_OFF); return r; } static int taal_wait_te(struct omap_dss_device *dssdev) { struct taal_data *td = dev_get_drvdata(&dssdev->dev); long wait = msecs_to_jiffies(500); if (!td->use_ext_te || !td->te_enabled) return 0; INIT_COMPLETION(td->te_completion); wait = wait_for_completion_timeout(&td->te_completion, wait); if (wait == 0) { dev_err(&dssdev->dev, "timeout waiting TE\n"); return -ETIME; } return 0; } static int taal_rotate(struct omap_dss_device *dssdev, u8 rotate) { struct taal_data *td = dev_get_drvdata(&dssdev->dev); int r; dev_dbg(&dssdev->dev, "rotate %d\n", rotate); if (td->enabled) { r = taal_set_addr_mode(rotate, td->mirror); if (r) return r; } td->rotate = rotate; return 0; } static u8 taal_get_rotate(struct omap_dss_device *dssdev) { struct taal_data *td = dev_get_drvdata(&dssdev->dev); return td->rotate; } static int taal_mirror(struct omap_dss_device *dssdev, bool enable) { struct taal_data *td = dev_get_drvdata(&dssdev->dev); int r; dev_dbg(&dssdev->dev, "mirror %d\n", enable); if (td->enabled) { r = taal_set_addr_mode(td->rotate, enable); if (r) return r; } td->mirror = enable; return 0; } static bool taal_get_mirror(struct omap_dss_device *dssdev) { struct taal_data *td = dev_get_drvdata(&dssdev->dev); return td->mirror; } static int taal_run_test(struct omap_dss_device *dssdev, int test_num) { u8 id1, id2, id3; int r; r = taal_dcs_read_1(DCS_GET_ID1, &id1); if (r) return r; r = taal_dcs_read_1(DCS_GET_ID2, &id2); if (r) return r; r = taal_dcs_read_1(DCS_GET_ID3, &id3); if (r) return r; return 0; } static int taal_memory_read(struct omap_dss_device *dssdev, void *buf, size_t size, u16 x, u16 y, u16 w, u16 h) { int r; int first = 1; int plen; unsigned buf_used = 0; if (size < w * h * 3) return -ENOMEM; size = min(w * h * 3, dssdev->panel.timings.x_res * dssdev->panel.timings.y_res * 3); /* plen 1 or 2 goes into short packet. until checksum error is fixed, * use short packets. plen 32 works, but bigger packets seem to cause * an error. */ if (size % 2) plen = 1; else plen = 2; taal_setup_update(dssdev, x, y, w, h); r = dsi_vc_set_max_rx_packet_size(TCH, plen); if (r) return r; while (buf_used < size) { u8 dcs_cmd = first ? 0x2e : 0x3e; first = 0; r = dsi_vc_dcs_read(TCH, dcs_cmd, buf + buf_used, size - buf_used); if (r < 0) { dev_err(&dssdev->dev, "read error\n"); goto err; } buf_used += r; if (r < plen) { dev_err(&dssdev->dev, "short read\n"); break; } if (signal_pending(current)) { dev_err(&dssdev->dev, "signal pending, " "aborting memory read\n"); r = -ERESTARTSYS; goto err; } } r = buf_used; err: dsi_vc_set_max_rx_packet_size(TCH, 1); return r; } static void taal_esd_work(struct work_struct *work) { struct taal_data *td = container_of(work, struct taal_data, esd_work.work); struct omap_dss_device *dssdev = td->dssdev; u8 state1, state2; int r; if (!td->enabled) return; dsi_bus_lock(); r = taal_dcs_read_1(DCS_RDDSDR, &state1); if (r) { dev_err(&dssdev->dev, "failed to read Taal status\n"); goto err; } /* Run self diagnostics */ r = taal_sleep_out(td); if (r) { dev_err(&dssdev->dev, "failed to run Taal self-diagnostics\n"); goto err; } r = taal_dcs_read_1(DCS_RDDSDR, &state2); if (r) { dev_err(&dssdev->dev, "failed to read Taal status\n"); goto err; } /* Each sleep out command will trigger a self diagnostic and flip * Bit6 if the test passes. */ if (!((state1 ^ state2) & (1 << 6))) { dev_err(&dssdev->dev, "LCD self diagnostics failed\n"); goto err; } /* Self-diagnostics result is also shown on TE GPIO line. We need * to re-enable TE after self diagnostics */ if (td->use_ext_te && td->te_enabled) taal_enable_te(dssdev, true); dsi_bus_unlock(); queue_delayed_work(td->esd_wq, &td->esd_work, TAAL_ESD_CHECK_PERIOD); return; err: dev_err(&dssdev->dev, "performing LCD reset\n"); taal_disable(dssdev); taal_enable(dssdev); dsi_bus_unlock(); queue_delayed_work(td->esd_wq, &td->esd_work, TAAL_ESD_CHECK_PERIOD); } static struct omap_dss_driver taal_driver = { .probe = taal_probe, .remove = taal_remove, .enable = taal_enable, .disable = taal_disable, .suspend = taal_suspend, .resume = taal_resume, .setup_update = taal_setup_update, .enable_te = taal_enable_te, .wait_for_te = taal_wait_te, .set_rotate = taal_rotate, .get_rotate = taal_get_rotate, .set_mirror = taal_mirror, .get_mirror = taal_get_mirror, .run_test = taal_run_test, .memory_read = taal_memory_read, .driver = { .name = "taal", .owner = THIS_MODULE, }, }; static int __init taal_init(void) { omap_dss_register_driver(&taal_driver); return 0; } static void __exit taal_exit(void) { omap_dss_unregister_driver(&taal_driver); } module_init(taal_init); module_exit(taal_exit); MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@nokia.com>"); MODULE_DESCRIPTION("Taal Driver"); MODULE_LICENSE("GPL"); Loading
drivers/video/omap2/displays/Kconfig +6 −0 Original line number Original line Diff line number Diff line Loading @@ -13,4 +13,10 @@ config PANEL_SHARP_LS037V7DW01 help help LCD Panel used in TI's SDP3430 and EVM boards LCD Panel used in TI's SDP3430 and EVM boards config PANEL_TAAL tristate "Taal DSI Panel" depends on OMAP2_DSS_DSI help Taal DSI command mode panel from TPO. endmenu endmenu
drivers/video/omap2/displays/Makefile +2 −0 Original line number Original line Diff line number Diff line obj-$(CONFIG_PANEL_GENERIC) += panel-generic.o obj-$(CONFIG_PANEL_GENERIC) += panel-generic.o obj-$(CONFIG_PANEL_SHARP_LS037V7DW01) += panel-sharp-ls037v7dw01.o obj-$(CONFIG_PANEL_SHARP_LS037V7DW01) += panel-sharp-ls037v7dw01.o obj-$(CONFIG_PANEL_TAAL) += panel-taal.o
drivers/video/omap2/displays/panel-taal.c 0 → 100644 +1003 −0 Original line number Original line Diff line number Diff line /* * Taal DSI command mode panel * * Copyright (C) 2009 Nokia Corporation * Author: Tomi Valkeinen <tomi.valkeinen@nokia.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/>. */ /*#define DEBUG*/ #include <linux/module.h> #include <linux/delay.h> #include <linux/err.h> #include <linux/jiffies.h> #include <linux/sched.h> #include <linux/backlight.h> #include <linux/fb.h> #include <linux/interrupt.h> #include <linux/gpio.h> #include <linux/completion.h> #include <linux/workqueue.h> #include <plat/display.h> /* DSI Virtual channel. Hardcoded for now. */ #define TCH 0 #define DCS_READ_NUM_ERRORS 0x05 #define DCS_READ_POWER_MODE 0x0a #define DCS_READ_MADCTL 0x0b #define DCS_READ_PIXEL_FORMAT 0x0c #define DCS_RDDSDR 0x0f #define DCS_SLEEP_IN 0x10 #define DCS_SLEEP_OUT 0x11 #define DCS_DISPLAY_OFF 0x28 #define DCS_DISPLAY_ON 0x29 #define DCS_COLUMN_ADDR 0x2a #define DCS_PAGE_ADDR 0x2b #define DCS_MEMORY_WRITE 0x2c #define DCS_TEAR_OFF 0x34 #define DCS_TEAR_ON 0x35 #define DCS_MEM_ACC_CTRL 0x36 #define DCS_PIXEL_FORMAT 0x3a #define DCS_BRIGHTNESS 0x51 #define DCS_CTRL_DISPLAY 0x53 #define DCS_WRITE_CABC 0x55 #define DCS_READ_CABC 0x56 #define DCS_GET_ID1 0xda #define DCS_GET_ID2 0xdb #define DCS_GET_ID3 0xdc /* #define TAAL_USE_ESD_CHECK */ #define TAAL_ESD_CHECK_PERIOD msecs_to_jiffies(5000) struct taal_data { struct backlight_device *bldev; unsigned long hw_guard_end; /* next value of jiffies when we can * issue the next sleep in/out command */ unsigned long hw_guard_wait; /* max guard time in jiffies */ struct omap_dss_device *dssdev; bool enabled; u8 rotate; bool mirror; bool te_enabled; bool use_ext_te; struct completion te_completion; bool use_dsi_bl; bool cabc_broken; unsigned cabc_mode; bool intro_printed; struct workqueue_struct *esd_wq; struct delayed_work esd_work; }; static void taal_esd_work(struct work_struct *work); static void hw_guard_start(struct taal_data *td, int guard_msec) { td->hw_guard_wait = msecs_to_jiffies(guard_msec); td->hw_guard_end = jiffies + td->hw_guard_wait; } static void hw_guard_wait(struct taal_data *td) { unsigned long wait = td->hw_guard_end - jiffies; if ((long)wait > 0 && wait <= td->hw_guard_wait) { set_current_state(TASK_UNINTERRUPTIBLE); schedule_timeout(wait); } } static int taal_dcs_read_1(u8 dcs_cmd, u8 *data) { int r; u8 buf[1]; r = dsi_vc_dcs_read(TCH, dcs_cmd, buf, 1); if (r < 0) return r; *data = buf[0]; return 0; } static int taal_dcs_write_0(u8 dcs_cmd) { return dsi_vc_dcs_write(TCH, &dcs_cmd, 1); } static int taal_dcs_write_1(u8 dcs_cmd, u8 param) { u8 buf[2]; buf[0] = dcs_cmd; buf[1] = param; return dsi_vc_dcs_write(TCH, buf, 2); } static int taal_sleep_in(struct taal_data *td) { u8 cmd; int r; hw_guard_wait(td); cmd = DCS_SLEEP_IN; r = dsi_vc_dcs_write_nosync(TCH, &cmd, 1); if (r) return r; hw_guard_start(td, 120); msleep(5); return 0; } static int taal_sleep_out(struct taal_data *td) { int r; hw_guard_wait(td); r = taal_dcs_write_0(DCS_SLEEP_OUT); if (r) return r; hw_guard_start(td, 120); msleep(5); return 0; } static int taal_get_id(u8 *id1, u8 *id2, u8 *id3) { int r; r = taal_dcs_read_1(DCS_GET_ID1, id1); if (r) return r; r = taal_dcs_read_1(DCS_GET_ID2, id2); if (r) return r; r = taal_dcs_read_1(DCS_GET_ID3, id3); if (r) return r; return 0; } static int taal_set_addr_mode(u8 rotate, bool mirror) { int r; u8 mode; int b5, b6, b7; r = taal_dcs_read_1(DCS_READ_MADCTL, &mode); if (r) return r; switch (rotate) { default: case 0: b7 = 0; b6 = 0; b5 = 0; break; case 1: b7 = 0; b6 = 1; b5 = 1; break; case 2: b7 = 1; b6 = 1; b5 = 0; break; case 3: b7 = 1; b6 = 0; b5 = 1; break; } if (mirror) b6 = !b6; mode &= ~((1<<7) | (1<<6) | (1<<5)); mode |= (b7 << 7) | (b6 << 6) | (b5 << 5); return taal_dcs_write_1(DCS_MEM_ACC_CTRL, mode); } static int taal_set_update_window(u16 x, u16 y, u16 w, u16 h) { int r; u16 x1 = x; u16 x2 = x + w - 1; u16 y1 = y; u16 y2 = y + h - 1; u8 buf[5]; buf[0] = DCS_COLUMN_ADDR; buf[1] = (x1 >> 8) & 0xff; buf[2] = (x1 >> 0) & 0xff; buf[3] = (x2 >> 8) & 0xff; buf[4] = (x2 >> 0) & 0xff; r = dsi_vc_dcs_write_nosync(TCH, buf, sizeof(buf)); if (r) return r; buf[0] = DCS_PAGE_ADDR; buf[1] = (y1 >> 8) & 0xff; buf[2] = (y1 >> 0) & 0xff; buf[3] = (y2 >> 8) & 0xff; buf[4] = (y2 >> 0) & 0xff; r = dsi_vc_dcs_write_nosync(TCH, buf, sizeof(buf)); if (r) return r; dsi_vc_send_bta_sync(TCH); return r; } static int taal_bl_update_status(struct backlight_device *dev) { struct omap_dss_device *dssdev = dev_get_drvdata(&dev->dev); struct taal_data *td = dev_get_drvdata(&dssdev->dev); int r; int level; if (dev->props.fb_blank == FB_BLANK_UNBLANK && dev->props.power == FB_BLANK_UNBLANK) level = dev->props.brightness; else level = 0; dev_dbg(&dssdev->dev, "update brightness to %d\n", level); if (td->use_dsi_bl) { if (td->enabled) { dsi_bus_lock(); r = taal_dcs_write_1(DCS_BRIGHTNESS, level); dsi_bus_unlock(); if (r) return r; } } else { if (!dssdev->set_backlight) return -EINVAL; r = dssdev->set_backlight(dssdev, level); if (r) return r; } return 0; } static int taal_bl_get_intensity(struct backlight_device *dev) { if (dev->props.fb_blank == FB_BLANK_UNBLANK && dev->props.power == FB_BLANK_UNBLANK) return dev->props.brightness; return 0; } static struct backlight_ops taal_bl_ops = { .get_brightness = taal_bl_get_intensity, .update_status = taal_bl_update_status, }; static void taal_get_timings(struct omap_dss_device *dssdev, struct omap_video_timings *timings) { *timings = dssdev->panel.timings; } static void taal_get_resolution(struct omap_dss_device *dssdev, u16 *xres, u16 *yres) { struct taal_data *td = dev_get_drvdata(&dssdev->dev); if (td->rotate == 0 || td->rotate == 2) { *xres = dssdev->panel.timings.x_res; *yres = dssdev->panel.timings.y_res; } else { *yres = dssdev->panel.timings.x_res; *xres = dssdev->panel.timings.y_res; } } static irqreturn_t taal_te_isr(int irq, void *data) { struct omap_dss_device *dssdev = data; struct taal_data *td = dev_get_drvdata(&dssdev->dev); complete_all(&td->te_completion); return IRQ_HANDLED; } static ssize_t taal_num_errors_show(struct device *dev, struct device_attribute *attr, char *buf) { struct omap_dss_device *dssdev = to_dss_device(dev); struct taal_data *td = dev_get_drvdata(&dssdev->dev); u8 errors; int r; if (td->enabled) { dsi_bus_lock(); r = taal_dcs_read_1(DCS_READ_NUM_ERRORS, &errors); dsi_bus_unlock(); } else { r = -ENODEV; } if (r) return r; return snprintf(buf, PAGE_SIZE, "%d\n", errors); } static ssize_t taal_hw_revision_show(struct device *dev, struct device_attribute *attr, char *buf) { struct omap_dss_device *dssdev = to_dss_device(dev); struct taal_data *td = dev_get_drvdata(&dssdev->dev); u8 id1, id2, id3; int r; if (td->enabled) { dsi_bus_lock(); r = taal_get_id(&id1, &id2, &id3); dsi_bus_unlock(); } else { r = -ENODEV; } if (r) return r; return snprintf(buf, PAGE_SIZE, "%02x.%02x.%02x\n", id1, id2, id3); } static const char *cabc_modes[] = { "off", /* used also always when CABC is not supported */ "ui", "still-image", "moving-image", }; static ssize_t show_cabc_mode(struct device *dev, struct device_attribute *attr, char *buf) { struct omap_dss_device *dssdev = to_dss_device(dev); struct taal_data *td = dev_get_drvdata(&dssdev->dev); const char *mode_str; int mode; int len; mode = td->cabc_mode; mode_str = "unknown"; if (mode >= 0 && mode < ARRAY_SIZE(cabc_modes)) mode_str = cabc_modes[mode]; len = snprintf(buf, PAGE_SIZE, "%s\n", mode_str); return len < PAGE_SIZE - 1 ? len : PAGE_SIZE - 1; } static ssize_t store_cabc_mode(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct omap_dss_device *dssdev = to_dss_device(dev); struct taal_data *td = dev_get_drvdata(&dssdev->dev); int i; for (i = 0; i < ARRAY_SIZE(cabc_modes); i++) { if (sysfs_streq(cabc_modes[i], buf)) break; } if (i == ARRAY_SIZE(cabc_modes)) return -EINVAL; if (td->enabled) { dsi_bus_lock(); if (!td->cabc_broken) taal_dcs_write_1(DCS_WRITE_CABC, i); dsi_bus_unlock(); } td->cabc_mode = i; return count; } static ssize_t show_cabc_available_modes(struct device *dev, struct device_attribute *attr, char *buf) { int len; int i; for (i = 0, len = 0; len < PAGE_SIZE && i < ARRAY_SIZE(cabc_modes); i++) len += snprintf(&buf[len], PAGE_SIZE - len, "%s%s%s", i ? " " : "", cabc_modes[i], i == ARRAY_SIZE(cabc_modes) - 1 ? "\n" : ""); return len < PAGE_SIZE ? len : PAGE_SIZE - 1; } static DEVICE_ATTR(num_dsi_errors, S_IRUGO, taal_num_errors_show, NULL); static DEVICE_ATTR(hw_revision, S_IRUGO, taal_hw_revision_show, NULL); static DEVICE_ATTR(cabc_mode, S_IRUGO | S_IWUSR, show_cabc_mode, store_cabc_mode); static DEVICE_ATTR(cabc_available_modes, S_IRUGO, show_cabc_available_modes, NULL); static struct attribute *taal_attrs[] = { &dev_attr_num_dsi_errors.attr, &dev_attr_hw_revision.attr, &dev_attr_cabc_mode.attr, &dev_attr_cabc_available_modes.attr, NULL, }; static struct attribute_group taal_attr_group = { .attrs = taal_attrs, }; static int taal_probe(struct omap_dss_device *dssdev) { struct taal_data *td; struct backlight_device *bldev; int r; const struct omap_video_timings taal_panel_timings = { .x_res = 864, .y_res = 480, }; dev_dbg(&dssdev->dev, "probe\n"); dssdev->panel.config = OMAP_DSS_LCD_TFT; dssdev->panel.timings = taal_panel_timings; dssdev->ctrl.pixel_size = 24; td = kzalloc(sizeof(*td), GFP_KERNEL); if (!td) { r = -ENOMEM; goto err0; } td->dssdev = dssdev; td->esd_wq = create_singlethread_workqueue("taal_esd"); if (td->esd_wq == NULL) { dev_err(&dssdev->dev, "can't create ESD workqueue\n"); r = -ENOMEM; goto err2; } INIT_DELAYED_WORK_DEFERRABLE(&td->esd_work, taal_esd_work); dev_set_drvdata(&dssdev->dev, td); dssdev->get_timings = taal_get_timings; dssdev->get_resolution = taal_get_resolution; /* if no platform set_backlight() defined, presume DSI backlight * control */ if (!dssdev->set_backlight) td->use_dsi_bl = true; bldev = backlight_device_register("taal", &dssdev->dev, dssdev, &taal_bl_ops); if (IS_ERR(bldev)) { r = PTR_ERR(bldev); goto err1; } td->bldev = bldev; bldev->props.fb_blank = FB_BLANK_UNBLANK; bldev->props.power = FB_BLANK_UNBLANK; if (td->use_dsi_bl) { bldev->props.max_brightness = 255; bldev->props.brightness = 255; } else { bldev->props.max_brightness = 127; bldev->props.brightness = 127; } taal_bl_update_status(bldev); if (dssdev->phy.dsi.ext_te) { int gpio = dssdev->phy.dsi.ext_te_gpio; r = gpio_request(gpio, "taal irq"); if (r) { dev_err(&dssdev->dev, "GPIO request failed\n"); goto err3; } gpio_direction_input(gpio); r = request_irq(gpio_to_irq(gpio), taal_te_isr, IRQF_DISABLED | IRQF_TRIGGER_RISING, "taal vsync", dssdev); if (r) { dev_err(&dssdev->dev, "IRQ request failed\n"); gpio_free(gpio); goto err3; } init_completion(&td->te_completion); td->use_ext_te = true; } r = sysfs_create_group(&dssdev->dev.kobj, &taal_attr_group); if (r) { dev_err(&dssdev->dev, "failed to create sysfs files\n"); goto err4; } return 0; err4: if (td->use_ext_te) { int gpio = dssdev->phy.dsi.ext_te_gpio; free_irq(gpio_to_irq(gpio), dssdev); gpio_free(gpio); } err3: backlight_device_unregister(bldev); err2: cancel_delayed_work_sync(&td->esd_work); destroy_workqueue(td->esd_wq); err1: kfree(td); err0: return r; } static void taal_remove(struct omap_dss_device *dssdev) { struct taal_data *td = dev_get_drvdata(&dssdev->dev); struct backlight_device *bldev; dev_dbg(&dssdev->dev, "remove\n"); sysfs_remove_group(&dssdev->dev.kobj, &taal_attr_group); if (td->use_ext_te) { int gpio = dssdev->phy.dsi.ext_te_gpio; free_irq(gpio_to_irq(gpio), dssdev); gpio_free(gpio); } bldev = td->bldev; bldev->props.power = FB_BLANK_POWERDOWN; taal_bl_update_status(bldev); backlight_device_unregister(bldev); cancel_delayed_work_sync(&td->esd_work); destroy_workqueue(td->esd_wq); kfree(td); } static int taal_enable(struct omap_dss_device *dssdev) { struct taal_data *td = dev_get_drvdata(&dssdev->dev); u8 id1, id2, id3; int r; dev_dbg(&dssdev->dev, "enable\n"); if (dssdev->platform_enable) { r = dssdev->platform_enable(dssdev); if (r) return r; } /* it seems we have to wait a bit until taal is ready */ msleep(5); r = taal_sleep_out(td); if (r) goto err; r = taal_get_id(&id1, &id2, &id3); if (r) goto err; /* on early revisions CABC is broken */ if (id2 == 0x00 || id2 == 0xff || id2 == 0x81) td->cabc_broken = true; taal_dcs_write_1(DCS_BRIGHTNESS, 0xff); taal_dcs_write_1(DCS_CTRL_DISPLAY, (1<<2) | (1<<5)); /* BL | BCTRL */ taal_dcs_write_1(DCS_PIXEL_FORMAT, 0x7); /* 24bit/pixel */ taal_set_addr_mode(td->rotate, td->mirror); if (!td->cabc_broken) taal_dcs_write_1(DCS_WRITE_CABC, td->cabc_mode); taal_dcs_write_0(DCS_DISPLAY_ON); #ifdef TAAL_USE_ESD_CHECK queue_delayed_work(td->esd_wq, &td->esd_work, TAAL_ESD_CHECK_PERIOD); #endif td->enabled = 1; if (!td->intro_printed) { dev_info(&dssdev->dev, "revision %02x.%02x.%02x\n", id1, id2, id3); if (td->cabc_broken) dev_info(&dssdev->dev, "old Taal version, CABC disabled\n"); td->intro_printed = true; } return 0; err: if (dssdev->platform_disable) dssdev->platform_disable(dssdev); return r; } static void taal_disable(struct omap_dss_device *dssdev) { struct taal_data *td = dev_get_drvdata(&dssdev->dev); dev_dbg(&dssdev->dev, "disable\n"); cancel_delayed_work(&td->esd_work); taal_dcs_write_0(DCS_DISPLAY_OFF); taal_sleep_in(td); /* wait a bit so that the message goes through */ msleep(10); if (dssdev->platform_disable) dssdev->platform_disable(dssdev); td->enabled = 0; } static int taal_suspend(struct omap_dss_device *dssdev) { struct taal_data *td = dev_get_drvdata(&dssdev->dev); struct backlight_device *bldev = td->bldev; bldev->props.power = FB_BLANK_POWERDOWN; taal_bl_update_status(bldev); return 0; } static int taal_resume(struct omap_dss_device *dssdev) { struct taal_data *td = dev_get_drvdata(&dssdev->dev); struct backlight_device *bldev = td->bldev; bldev->props.power = FB_BLANK_UNBLANK; taal_bl_update_status(bldev); return 0; } static void taal_setup_update(struct omap_dss_device *dssdev, u16 x, u16 y, u16 w, u16 h) { taal_set_update_window(x, y, w, h); } static int taal_enable_te(struct omap_dss_device *dssdev, bool enable) { struct taal_data *td = dev_get_drvdata(&dssdev->dev); int r; td->te_enabled = enable; if (enable) r = taal_dcs_write_1(DCS_TEAR_ON, 0); else r = taal_dcs_write_0(DCS_TEAR_OFF); return r; } static int taal_wait_te(struct omap_dss_device *dssdev) { struct taal_data *td = dev_get_drvdata(&dssdev->dev); long wait = msecs_to_jiffies(500); if (!td->use_ext_te || !td->te_enabled) return 0; INIT_COMPLETION(td->te_completion); wait = wait_for_completion_timeout(&td->te_completion, wait); if (wait == 0) { dev_err(&dssdev->dev, "timeout waiting TE\n"); return -ETIME; } return 0; } static int taal_rotate(struct omap_dss_device *dssdev, u8 rotate) { struct taal_data *td = dev_get_drvdata(&dssdev->dev); int r; dev_dbg(&dssdev->dev, "rotate %d\n", rotate); if (td->enabled) { r = taal_set_addr_mode(rotate, td->mirror); if (r) return r; } td->rotate = rotate; return 0; } static u8 taal_get_rotate(struct omap_dss_device *dssdev) { struct taal_data *td = dev_get_drvdata(&dssdev->dev); return td->rotate; } static int taal_mirror(struct omap_dss_device *dssdev, bool enable) { struct taal_data *td = dev_get_drvdata(&dssdev->dev); int r; dev_dbg(&dssdev->dev, "mirror %d\n", enable); if (td->enabled) { r = taal_set_addr_mode(td->rotate, enable); if (r) return r; } td->mirror = enable; return 0; } static bool taal_get_mirror(struct omap_dss_device *dssdev) { struct taal_data *td = dev_get_drvdata(&dssdev->dev); return td->mirror; } static int taal_run_test(struct omap_dss_device *dssdev, int test_num) { u8 id1, id2, id3; int r; r = taal_dcs_read_1(DCS_GET_ID1, &id1); if (r) return r; r = taal_dcs_read_1(DCS_GET_ID2, &id2); if (r) return r; r = taal_dcs_read_1(DCS_GET_ID3, &id3); if (r) return r; return 0; } static int taal_memory_read(struct omap_dss_device *dssdev, void *buf, size_t size, u16 x, u16 y, u16 w, u16 h) { int r; int first = 1; int plen; unsigned buf_used = 0; if (size < w * h * 3) return -ENOMEM; size = min(w * h * 3, dssdev->panel.timings.x_res * dssdev->panel.timings.y_res * 3); /* plen 1 or 2 goes into short packet. until checksum error is fixed, * use short packets. plen 32 works, but bigger packets seem to cause * an error. */ if (size % 2) plen = 1; else plen = 2; taal_setup_update(dssdev, x, y, w, h); r = dsi_vc_set_max_rx_packet_size(TCH, plen); if (r) return r; while (buf_used < size) { u8 dcs_cmd = first ? 0x2e : 0x3e; first = 0; r = dsi_vc_dcs_read(TCH, dcs_cmd, buf + buf_used, size - buf_used); if (r < 0) { dev_err(&dssdev->dev, "read error\n"); goto err; } buf_used += r; if (r < plen) { dev_err(&dssdev->dev, "short read\n"); break; } if (signal_pending(current)) { dev_err(&dssdev->dev, "signal pending, " "aborting memory read\n"); r = -ERESTARTSYS; goto err; } } r = buf_used; err: dsi_vc_set_max_rx_packet_size(TCH, 1); return r; } static void taal_esd_work(struct work_struct *work) { struct taal_data *td = container_of(work, struct taal_data, esd_work.work); struct omap_dss_device *dssdev = td->dssdev; u8 state1, state2; int r; if (!td->enabled) return; dsi_bus_lock(); r = taal_dcs_read_1(DCS_RDDSDR, &state1); if (r) { dev_err(&dssdev->dev, "failed to read Taal status\n"); goto err; } /* Run self diagnostics */ r = taal_sleep_out(td); if (r) { dev_err(&dssdev->dev, "failed to run Taal self-diagnostics\n"); goto err; } r = taal_dcs_read_1(DCS_RDDSDR, &state2); if (r) { dev_err(&dssdev->dev, "failed to read Taal status\n"); goto err; } /* Each sleep out command will trigger a self diagnostic and flip * Bit6 if the test passes. */ if (!((state1 ^ state2) & (1 << 6))) { dev_err(&dssdev->dev, "LCD self diagnostics failed\n"); goto err; } /* Self-diagnostics result is also shown on TE GPIO line. We need * to re-enable TE after self diagnostics */ if (td->use_ext_te && td->te_enabled) taal_enable_te(dssdev, true); dsi_bus_unlock(); queue_delayed_work(td->esd_wq, &td->esd_work, TAAL_ESD_CHECK_PERIOD); return; err: dev_err(&dssdev->dev, "performing LCD reset\n"); taal_disable(dssdev); taal_enable(dssdev); dsi_bus_unlock(); queue_delayed_work(td->esd_wq, &td->esd_work, TAAL_ESD_CHECK_PERIOD); } static struct omap_dss_driver taal_driver = { .probe = taal_probe, .remove = taal_remove, .enable = taal_enable, .disable = taal_disable, .suspend = taal_suspend, .resume = taal_resume, .setup_update = taal_setup_update, .enable_te = taal_enable_te, .wait_for_te = taal_wait_te, .set_rotate = taal_rotate, .get_rotate = taal_get_rotate, .set_mirror = taal_mirror, .get_mirror = taal_get_mirror, .run_test = taal_run_test, .memory_read = taal_memory_read, .driver = { .name = "taal", .owner = THIS_MODULE, }, }; static int __init taal_init(void) { omap_dss_register_driver(&taal_driver); return 0; } static void __exit taal_exit(void) { omap_dss_unregister_driver(&taal_driver); } module_init(taal_init); module_exit(taal_exit); MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@nokia.com>"); MODULE_DESCRIPTION("Taal Driver"); MODULE_LICENSE("GPL");
Tomi Valkeinen <tomi.valkeinen@nokia.com>Tomi Valkeinen <tomi.valkeinen@nokia.com>