diff options
Diffstat (limited to 'drivers/video/omap2/displays/panel-taal.c')
| -rw-r--r-- | drivers/video/omap2/displays/panel-taal.c | 1590 |
1 files changed, 0 insertions, 1590 deletions
diff --git a/drivers/video/omap2/displays/panel-taal.c b/drivers/video/omap2/displays/panel-taal.c deleted file mode 100644 index 61026f96ad2..00000000000 --- a/drivers/video/omap2/displays/panel-taal.c +++ /dev/null @@ -1,1590 +0,0 @@ -/* - * 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/workqueue.h> -#include <linux/slab.h> -#include <linux/regulator/consumer.h> -#include <linux/mutex.h> - -#include <plat/display.h> -#include <plat/nokia-dsi-panel.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_ESD_CHECK_PERIOD msecs_to_jiffies(5000) - -static irqreturn_t taal_te_isr(int irq, void *data); -static void taal_te_timeout_work_callback(struct work_struct *work); -static int _taal_enable_te(struct omap_dss_device *dssdev, bool enable); - -struct panel_regulator { - struct regulator *regulator; - const char *name; - int min_uV; - int max_uV; -}; - -static void free_regulators(struct panel_regulator *regulators, int n) -{ - int i; - - for (i = 0; i < n; i++) { - /* disable/put in reverse order */ - regulator_disable(regulators[n - i - 1].regulator); - regulator_put(regulators[n - i - 1].regulator); - } -} - -static int init_regulators(struct omap_dss_device *dssdev, - struct panel_regulator *regulators, int n) -{ - int r, i, v; - - for (i = 0; i < n; i++) { - struct regulator *reg; - - reg = regulator_get(&dssdev->dev, regulators[i].name); - if (IS_ERR(reg)) { - dev_err(&dssdev->dev, "failed to get regulator %s\n", - regulators[i].name); - r = PTR_ERR(reg); - goto err; - } - - /* FIXME: better handling of fixed vs. variable regulators */ - v = regulator_get_voltage(reg); - if (v < regulators[i].min_uV || v > regulators[i].max_uV) { - r = regulator_set_voltage(reg, regulators[i].min_uV, - regulators[i].max_uV); - if (r) { - dev_err(&dssdev->dev, - "failed to set regulator %s voltage\n", - regulators[i].name); - regulator_put(reg); - goto err; - } - } - - r = regulator_enable(reg); - if (r) { - dev_err(&dssdev->dev, "failed to enable regulator %s\n", - regulators[i].name); - regulator_put(reg); - goto err; - } - - regulators[i].regulator = reg; - } - - return 0; - -err: - free_regulators(regulators, i); - - return r; -} - -/** - * struct panel_config - panel configuration - * @name: panel name - * @type: panel type - * @timings: panel resolution - * @sleep: various panel specific delays, passed to msleep() if non-zero - * @reset_sequence: reset sequence timings, passed to udelay() if non-zero - * @regulators: array of panel regulators - * @num_regulators: number of regulators in the array - */ -struct panel_config { - const char *name; - int type; - - struct omap_video_timings timings; - - struct { - unsigned int sleep_in; - unsigned int sleep_out; - unsigned int hw_reset; - unsigned int enable_te; - } sleep; - - struct { - unsigned int high; - unsigned int low; - } reset_sequence; - - struct panel_regulator *regulators; - int num_regulators; -}; - -enum { - PANEL_TAAL, -}; - -static struct panel_config panel_configs[] = { - { - .name = "taal", - .type = PANEL_TAAL, - .timings = { - .x_res = 864, - .y_res = 480, - }, - .sleep = { - .sleep_in = 5, - .sleep_out = 5, - .hw_reset = 5, - .enable_te = 100, /* possible panel bug */ - }, - .reset_sequence = { - .high = 10, - .low = 10, - }, - }, -}; - -struct taal_data { - struct mutex lock; - - 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; - - atomic_t do_update; - struct { - u16 x; - u16 y; - u16 w; - u16 h; - } update_region; - struct delayed_work te_timeout_work; - - bool use_dsi_bl; - - bool cabc_broken; - unsigned cabc_mode; - - bool intro_printed; - - struct workqueue_struct *esd_wq; - struct delayed_work esd_work; - - struct panel_config *panel_config; -}; - -static inline struct nokia_dsi_panel_data -*get_panel_data(const struct omap_dss_device *dssdev) -{ - return (struct nokia_dsi_panel_data *) dssdev->data; -} - -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); - - if (td->panel_config->sleep.sleep_in) - msleep(td->panel_config->sleep.sleep_in); - - 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); - - if (td->panel_config->sleep.sleep_out) - msleep(td->panel_config->sleep.sleep_out); - - 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); - struct nokia_dsi_panel_data *panel_data = get_panel_data(dssdev); - 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); - - mutex_lock(&td->lock); - - if (td->use_dsi_bl) { - if (td->enabled) { - dsi_bus_lock(); - r = taal_dcs_write_1(DCS_BRIGHTNESS, level); - dsi_bus_unlock(); - } else { - r = 0; - } - } else { - if (!panel_data->set_backlight) - r = -EINVAL; - else - r = panel_data->set_backlight(dssdev, level); - } - - mutex_unlock(&td->lock); - - return r; -} - -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 const 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 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; - - mutex_lock(&td->lock); - - if (td->enabled) { - dsi_bus_lock(); - r = taal_dcs_read_1(DCS_READ_NUM_ERRORS, &errors); - dsi_bus_unlock(); - } else { - r = -ENODEV; - } - - mutex_unlock(&td->lock); - - 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; - - mutex_lock(&td->lock); - - if (td->enabled) { - dsi_bus_lock(); - r = taal_get_id(&id1, &id2, &id3); - dsi_bus_unlock(); - } else { - r = -ENODEV; - } - - mutex_unlock(&td->lock); - - 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; - - mutex_lock(&td->lock); - - 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; - - mutex_unlock(&td->lock); - - 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 void taal_hw_reset(struct omap_dss_device *dssdev) -{ - struct taal_data *td = dev_get_drvdata(&dssdev->dev); - struct nokia_dsi_panel_data *panel_data = get_panel_data(dssdev); - - if (panel_data->reset_gpio == -1) - return; - - gpio_set_value(panel_data->reset_gpio, 1); - if (td->panel_config->reset_sequence.high) - udelay(td->panel_config->reset_sequence.high); - /* reset the panel */ - gpio_set_value(panel_data->reset_gpio, 0); - /* assert reset */ - if (td->panel_config->reset_sequence.low) - udelay(td->panel_config->reset_sequence.low); - gpio_set_value(panel_data->reset_gpio, 1); - /* wait after releasing reset */ - if (td->panel_config->sleep.hw_reset) - msleep(td->panel_config->sleep.hw_reset); -} - -static int taal_probe(struct omap_dss_device *dssdev) -{ - struct backlight_properties props; - struct taal_data *td; - struct backlight_device *bldev; - struct nokia_dsi_panel_data *panel_data = get_panel_data(dssdev); - struct panel_config *panel_config = NULL; - int r, i; - - dev_dbg(&dssdev->dev, "probe\n"); - - if (!panel_data || !panel_data->name) { - r = -EINVAL; - goto err; - } - - for (i = 0; i < ARRAY_SIZE(panel_configs); i++) { - if (strcmp(panel_data->name, panel_configs[i].name) == 0) { - panel_config = &panel_configs[i]; - break; - } - } - - if (!panel_config) { - r = -EINVAL; - goto err; - } - - dssdev->panel.config = OMAP_DSS_LCD_TFT; - dssdev->panel.timings = panel_config->timings; - dssdev->ctrl.pixel_size = 24; - - td = kzalloc(sizeof(*td), GFP_KERNEL); - if (!td) { - r = -ENOMEM; - goto err; - } - td->dssdev = dssdev; - td->panel_config = panel_config; - - mutex_init(&td->lock); - - atomic_set(&td->do_update, 0); - - r = init_regulators(dssdev, panel_config->regulators, - panel_config->num_regulators); - if (r) - goto err_reg; - - 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 err_wq; - } - INIT_DELAYED_WORK_DEFERRABLE(&td->esd_work, taal_esd_work); - - dev_set_drvdata(&dssdev->dev, td); - - taal_hw_reset(dssdev); - - /* if no platform set_backlight() defined, presume DSI backlight - * control */ - memset(&props, 0, sizeof(struct backlight_properties)); - if (!panel_data->set_backlight) - td->use_dsi_bl = true; - - if (td->use_dsi_bl) - props.max_brightness = 255; - else - props.max_brightness = 127; - bldev = backlight_device_register("taal", &dssdev->dev, dssdev, - &taal_bl_ops, &props); - if (IS_ERR(bldev)) { - r = PTR_ERR(bldev); - goto err_bl; - } - - td->bldev = bldev; - - bldev->props.fb_blank = FB_BLANK_UNBLANK; - bldev->props.power = FB_BLANK_UNBLANK; - if (td->use_dsi_bl) - bldev->props.brightness = 255; - else - bldev->props.brightness = 127; - - taal_bl_update_status(bldev); - - if (panel_data->use_ext_te) { - int gpio = panel_data->ext_te_gpio; - - r = gpio_request(gpio, "taal irq"); - if (r) { - dev_err(&dssdev->dev, "GPIO request failed\n"); - goto err_gpio; - } - - 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 err_irq; - } - - INIT_DELAYED_WORK_DEFERRABLE(&td->te_timeout_work, - taal_te_timeout_work_callback); - - dev_dbg(&dssdev->dev, "Using GPIO TE\n"); - } - - r = sysfs_create_group(&dssdev->dev.kobj, &taal_attr_group); - if (r) { - dev_err(&dssdev->dev, "failed to create sysfs files\n"); - goto err_sysfs; - } - - return 0; -err_sysfs: - if (panel_data->use_ext_te) - free_irq(gpio_to_irq(panel_data->ext_te_gpio), dssdev); -err_irq: - if (panel_data->use_ext_te) - gpio_free(panel_data->ext_te_gpio); -err_gpio: - backlight_device_unregister(bldev); -err_bl: - destroy_workqueue(td->esd_wq); -err_wq: - free_regulators(panel_config->regulators, panel_config->num_regulators); -err_reg: - kfree(td); -err: - return r; -} - -static void taal_remove(struct omap_dss_device *dssdev) -{ - struct taal_data *td = dev_get_drvdata(&dssdev->dev); - struct nokia_dsi_panel_data *panel_data = get_panel_data(dssdev); - struct backlight_device *bldev; - - dev_dbg(&dssdev->dev, "remove\n"); - - sysfs_remove_group(&dssdev->dev.kobj, &taal_attr_group); - - if (panel_data->use_ext_te) { - int gpio = panel_data->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(&td->esd_work); - destroy_workqueue(td->esd_wq); - - /* reset, to be sure that the panel is in a valid state */ - taal_hw_reset(dssdev); - - free_regulators(td->panel_config->regulators, - td->panel_config->num_regulators); - - kfree(td); -} - -static int taal_power_on(struct omap_dss_device *dssdev) -{ - struct taal_data *td = dev_get_drvdata(&dssdev->dev); - u8 id1, id2, id3; - int r; - - r = omapdss_dsi_display_enable(dssdev); - if (r) { - dev_err(&dssdev->dev, "failed to enable DSI\n"); - goto err0; - } - - taal_hw_reset(dssdev); - - omapdss_dsi_vc_enable_hs(TCH, false); - - r = taal_sleep_out(td); - if (r) - goto err; - - r = taal_get_id(&id1, &id2, &id3); - if (r) - goto err; - - /* on early Taal revisions CABC is broken */ - if (td->panel_config->type == PANEL_TAAL && - (id2 == 0x00 || id2 == 0xff || id2 == 0x81)) - td->cabc_broken = true; - - r = taal_dcs_write_1(DCS_BRIGHTNESS, 0xff); - if (r) - goto err; - - r = taal_dcs_write_1(DCS_CTRL_DISPLAY, - (1<<2) | (1<<5)); /* BL | BCTRL */ - if (r) - goto err; - - r = taal_dcs_write_1(DCS_PIXEL_FORMAT, 0x7); /* 24bit/pixel */ - if (r) - goto err; - - r = taal_set_addr_mode(td->rotate, td->mirror); - if (r) - goto err; - - if (!td->cabc_broken) { - r = taal_dcs_write_1(DCS_WRITE_CABC, td->cabc_mode); - if (r) - goto err; - } - - r = taal_dcs_write_0(DCS_DISPLAY_ON); - if (r) - goto err; - - r = _taal_enable_te(dssdev, td->te_enabled); - if (r) - goto err; - - td->enabled = 1; - - if (!td->intro_printed) { - dev_info(&dssdev->dev, "%s panel revision %02x.%02x.%02x\n", - td->panel_config->name, id1, id2, id3); - if (td->cabc_broken) - dev_info(&dssdev->dev, - "old Taal version, CABC disabled\n"); - td->intro_printed = true; - } - - omapdss_dsi_vc_enable_hs(TCH, true); - - return 0; -err: - dev_err(&dssdev->dev, "error while enabling panel, issuing HW reset\n"); - - taal_hw_reset(dssdev); - - omapdss_dsi_display_disable(dssdev); -err0: - return r; -} - -static void taal_power_off(struct omap_dss_device *dssdev) -{ - struct taal_data *td = dev_get_drvdata(&dssdev->dev); - int r; - - r = taal_dcs_write_0(DCS_DISPLAY_OFF); - if (!r) { - r = taal_sleep_in(td); - /* HACK: wait a bit so that the message goes through */ - msleep(10); - } - - if (r) { - dev_err(&dssdev->dev, - "error disabling panel, issuing HW reset\n"); - taal_hw_reset(dssdev); - } - - omapdss_dsi_display_disable(dssdev); - - td->enabled = 0; -} - -static int taal_enable(struct omap_dss_device *dssdev) -{ - struct taal_data *td = dev_get_drvdata(&dssdev->dev); - struct nokia_dsi_panel_data *panel_data = get_panel_data(dssdev); - int r; - - dev_dbg(&dssdev->dev, "enable\n"); - - mutex_lock(&td->lock); - - if (dssdev->state != OMAP_DSS_DISPLAY_DISABLED) { - r = -EINVAL; - goto err; - } - - dsi_bus_lock(); - - r = taal_power_on(dssdev); - - dsi_bus_unlock(); - - if (r) - goto err; - - if (panel_data->use_esd_check) - queue_delayed_work(td->esd_wq, &td->esd_work, - TAAL_ESD_CHECK_PERIOD); - - dssdev->state = OMAP_DSS_DISPLAY_ACTIVE; - - mutex_unlock(&td->lock); - - return 0; -err: - dev_dbg(&dssdev->dev, "enable failed\n"); - mutex_unlock(&td->lock); - 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"); - - mutex_lock(&td->lock); - - cancel_delayed_work(&td->esd_work); - - dsi_bus_lock(); - - if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE) - taal_power_off(dssdev); - - dsi_bus_unlock(); - - dssdev->state = OMAP_DSS_DISPLAY_DISABLED; - - mutex_unlock(&td->lock); -} - -static int taal_suspend(struct omap_dss_device *dssdev) -{ - struct taal_data *td = dev_get_drvdata(&dssdev->dev); - int r; - - dev_dbg(&dssdev->dev, "suspend\n"); - - mutex_lock(&td->lock); - - if (dssdev->state != OMAP_DSS_DISPLAY_ACTIVE) { - r = -EINVAL; - goto err; - } - - cancel_delayed_work(&td->esd_work); - - dsi_bus_lock(); - - taal_power_off(dssdev); - - dsi_bus_unlock(); - - dssdev->state = OMAP_DSS_DISPLAY_SUSPENDED; - - mutex_unlock(&td->lock); - - return 0; -err: - mutex_unlock(&td->lock); - return r; -} - -static int taal_resume(struct omap_dss_device *dssdev) -{ - struct taal_data *td = dev_get_drvdata(&dssdev->dev); - struct nokia_dsi_panel_data *panel_data = get_panel_data(dssdev); - int r; - - dev_dbg(&dssdev->dev, "resume\n"); - - mutex_lock(&td->lock); - - if (dssdev->state != OMAP_DSS_DISPLAY_SUSPENDED) { - r = -EINVAL; - goto err; - } - - dsi_bus_lock(); - - r = taal_power_on(dssdev); - - dsi_bus_unlock(); - - if (r) { - dssdev->state = OMAP_DSS_DISPLAY_DISABLED; - } else { - dssdev->state = OMAP_DSS_DISPLAY_ACTIVE; - if (panel_data->use_esd_check) - queue_delayed_work(td->esd_wq, &td->esd_work, - TAAL_ESD_CHECK_PERIOD); - } - - mutex_unlock(&td->lock); - - return r; -err: - mutex_unlock(&td->lock); - return r; -} - -static void taal_framedone_cb(int err, void *data) -{ - struct omap_dss_device *dssdev = data; - dev_dbg(&dssdev->dev, "framedone, err %d\n", err); - dsi_bus_unlock(); -} - -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); - int old; - int r; - - old = atomic_cmpxchg(&td->do_update, 1, 0); - - if (old) { - cancel_delayed_work(&td->te_timeout_work); - - r = omap_dsi_update(dssdev, TCH, - td->update_region.x, - td->update_region.y, - td->update_region.w, - td->update_region.h, - taal_framedone_cb, dssdev); - if (r) - goto err; - } - - return IRQ_HANDLED; -err: - dev_err(&dssdev->dev, "start update failed\n"); - dsi_bus_unlock(); - return IRQ_HANDLED; -} - -static void taal_te_timeout_work_callback(struct work_struct *work) -{ - struct taal_data *td = container_of(work, struct taal_data, - te_timeout_work.work); - struct omap_dss_device *dssdev = td->dssdev; - - dev_err(&dssdev->dev, "TE not received for 250ms!\n"); - - atomic_set(&td->do_update, 0); - dsi_bus_unlock(); -} - -static int taal_update(struct omap_dss_device *dssdev, - u16 x, u16 y, u16 w, u16 h) -{ - struct taal_data *td = dev_get_drvdata(&dssdev->dev); - struct nokia_dsi_panel_data *panel_data = get_panel_data(dssdev); - int r; - - dev_dbg(&dssdev->dev, "update %d, %d, %d x %d\n", x, y, w, h); - - mutex_lock(&td->lock); - dsi_bus_lock(); - - if (!td->enabled) { - r = 0; - goto err; - } - - r = omap_dsi_prepare_update(dssdev, &x, &y, &w, &h, true); - if (r) - goto err; - - r = taal_set_update_window(x, y, w, h); - if (r) - goto err; - - if (td->te_enabled && panel_data->use_ext_te) { - td->update_region.x = x; - td->update_region.y = y; - td->update_region.w = w; - td->update_region.h = h; - barrier(); - schedule_delayed_work(&td->te_timeout_work, - msecs_to_jiffies(250)); - atomic_set(&td->do_update, 1); - } else { - r = omap_dsi_update(dssdev, TCH, x, y, w, h, - taal_framedone_cb, dssdev); - if (r) - goto err; - } - - /* note: no bus_unlock here. unlock is in framedone_cb */ - mutex_unlock(&td->lock); - return 0; -err: - dsi_bus_unlock(); - mutex_unlock(&td->lock); - return r; -} - -static int taal_sync(struct omap_dss_device *dssdev) -{ - struct taal_data *td = dev_get_drvdata(&dssdev->dev); - - dev_dbg(&dssdev->dev, "sync\n"); - - mutex_lock(&td->lock); - dsi_bus_lock(); - dsi_bus_unlock(); - mutex_unlock(&td->lock); - - dev_dbg(&dssdev->dev, "sync done\n"); - - return 0; -} - -static int _taal_enable_te(struct omap_dss_device *dssdev, bool enable) -{ - struct taal_data *td = dev_get_drvdata(&dssdev->dev); - struct nokia_dsi_panel_data *panel_data = get_panel_data(dssdev); - int r; - - if (enable) - r = taal_dcs_write_1(DCS_TEAR_ON, 0); - else - r = taal_dcs_write_0(DCS_TEAR_OFF); - - if (!panel_data->use_ext_te) - omapdss_dsi_enable_te(dssdev, enable); - - if (td->panel_config->sleep.enable_te) - msleep(td->panel_config->sleep.enable_te); - - return r; -} - -static int taal_enable_te(struct omap_dss_device *dssdev, bool enable) -{ - struct taal_data *td = dev_get_drvdata(&dssdev->dev); - int r; - - mutex_lock(&td->lock); - - if (td->te_enabled == enable) - goto end; - - dsi_bus_lock(); - - if (td->enabled) { - r = _taal_enable_te(dssdev, enable); - if (r) - goto err; - } - - td->te_enabled = enable; - - dsi_bus_unlock(); -end: - mutex_unlock(&td->lock); - - return 0; -err: - dsi_bus_unlock(); - mutex_unlock(&td->lock); - - return r; -} - -static int taal_get_te(struct omap_dss_device *dssdev) -{ - struct taal_data *td = dev_get_drvdata(&dssdev->dev); - int r; - - mutex_lock(&td->lock); - r = td->te_enabled; - mutex_unlock(&td->lock); - - return r; -} - -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); - - mutex_lock(&td->lock); - - if (td->rotate == rotate) - goto end; - - dsi_bus_lock(); - - if (td->enabled) { - r = taal_set_addr_mode(rotate, td->mirror); - if (r) - goto err; - } - - td->rotate = rotate; - - dsi_bus_unlock(); -end: - mutex_unlock(&td->lock); - return 0; -err: - dsi_bus_unlock(); - mutex_unlock(&td->lock); - return r; -} - -static u8 taal_get_rotate(struct omap_dss_device *dssdev) -{ - struct taal_data *td = dev_get_drvdata(&dssdev->dev); - int r; - - mutex_lock(&td->lock); - r = td->rotate; - mutex_unlock(&td->lock); - - return r; -} - -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); - - mutex_lock(&td->lock); - - if (td->mirror == enable) - goto end; - - dsi_bus_lock(); - if (td->enabled) { - r = taal_set_addr_mode(td->rotate, enable); - if (r) - goto err; - } - - td->mirror = enable; - - dsi_bus_unlock(); -end: - mutex_unlock(&td->lock); - return 0; -err: - dsi_bus_unlock(); - mutex_unlock(&td->lock); - return r; -} - -static bool taal_get_mirror(struct omap_dss_device *dssdev) -{ - struct taal_data *td = dev_get_drvdata(&dssdev->dev); - int r; - - mutex_lock(&td->lock); - r = td->mirror; - mutex_unlock(&td->lock); - - return r; -} - -static int taal_run_test(struct omap_dss_device *dssdev, int test_num) -{ - struct taal_data *td = dev_get_drvdata(&dssdev->dev); - u8 id1, id2, id3; - int r; - - mutex_lock(&td->lock); - - if (!td->enabled) { - r = -ENODEV; - goto err1; - } - - dsi_bus_lock(); - - r = taal_dcs_read_1(DCS_GET_ID1, &id1); - if (r) - goto err2; - r = taal_dcs_read_1(DCS_GET_ID2, &id2); - if (r) - goto err2; - r = taal_dcs_read_1(DCS_GET_ID3, &id3); - if (r) - goto err2; - - dsi_bus_unlock(); - mutex_unlock(&td->lock); - return 0; -err2: - dsi_bus_unlock(); -err1: - mutex_unlock(&td->lock); - return r; -} - -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; - struct taal_data *td = dev_get_drvdata(&dssdev->dev); - - if (size < w * h * 3) - return -ENOMEM; - - mutex_lock(&td->lock); - - if (!td->enabled) { - r = -ENODEV; - goto err1; - } - - size = min(w * h * 3, - dssdev->panel.timings.x_res * - dssdev->panel.timings.y_res * 3); - - dsi_bus_lock(); - - /* 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_set_update_window(x, y, w, h); - - r = dsi_vc_set_max_rx_packet_size(TCH, plen); - if (r) - goto err2; - - 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 err3; - } - - 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 err3; - } - } - - r = buf_used; - -err3: - dsi_vc_set_max_rx_packet_size(TCH, 1); -err2: - dsi_bus_unlock(); -err1: - mutex_unlock(&td->lock); - 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; - struct nokia_dsi_panel_data *panel_data = get_panel_data(dssdev); - u8 state1, state2; - int r; - - mutex_lock(&td->lock); - - if (!td->enabled) { - mutex_unlock(&td->lock); - 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->te_enabled && panel_data->use_ext_te) { - r = taal_dcs_write_1(DCS_TEAR_ON, 0); - if (r) - goto err; - } - - dsi_bus_unlock(); - - queue_delayed_work(td->esd_wq, &td->esd_work, TAAL_ESD_CHECK_PERIOD); - - mutex_unlock(&td->lock); - return; -err: - dev_err(&dssdev->dev, "performing LCD reset\n"); - - taal_power_off(dssdev); - taal_hw_reset(dssdev); - taal_power_on(dssdev); - - dsi_bus_unlock(); - - queue_delayed_work(td->esd_wq, &td->esd_work, TAAL_ESD_CHECK_PERIOD); - - mutex_unlock(&td->lock); -} - -static int taal_set_update_mode(struct omap_dss_device *dssdev, - enum omap_dss_update_mode mode) -{ - if (mode != OMAP_DSS_UPDATE_MANUAL) - return -EINVAL; - return 0; -} - -static enum omap_dss_update_mode taal_get_update_mode( - struct omap_dss_device *dssdev) -{ - return OMAP_DSS_UPDATE_MANUAL; -} - -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, - - .set_update_mode = taal_set_update_mode, - .get_update_mode = taal_get_update_mode, - - .update = taal_update, - .sync = taal_sync, - - .get_resolution = taal_get_resolution, - .get_recommended_bpp = omapdss_default_get_recommended_bpp, - - .enable_te = taal_enable_te, - .get_te = taal_get_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, - - .get_timings = taal_get_timings, - - .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"); |