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Diffstat (limited to 'recipes/linux/linux-omap-2.6.31/dss2/0017-OMAP-DSS2-Taal-DSI-command-mode-panel-driver.patch')
-rw-r--r--recipes/linux/linux-omap-2.6.31/dss2/0017-OMAP-DSS2-Taal-DSI-command-mode-panel-driver.patch947
1 files changed, 947 insertions, 0 deletions
diff --git a/recipes/linux/linux-omap-2.6.31/dss2/0017-OMAP-DSS2-Taal-DSI-command-mode-panel-driver.patch b/recipes/linux/linux-omap-2.6.31/dss2/0017-OMAP-DSS2-Taal-DSI-command-mode-panel-driver.patch
new file mode 100644
index 0000000000..c58ce9d36b
--- /dev/null
+++ b/recipes/linux/linux-omap-2.6.31/dss2/0017-OMAP-DSS2-Taal-DSI-command-mode-panel-driver.patch
@@ -0,0 +1,947 @@
+From fc8cd50c04b519f3839e9dc505532e725c7af080 Mon Sep 17 00:00:00 2001
+From: Tomi Valkeinen <tomi.valkeinen@nokia.com>
+Date: Fri, 7 Aug 2009 14:45:05 +0300
+Subject: [PATCH 17/18] OMAP: DSS2: Taal DSI command mode panel driver
+
+Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
+---
+ drivers/video/omap2/displays/Kconfig | 6 +
+ drivers/video/omap2/displays/Makefile | 2 +
+ drivers/video/omap2/displays/panel-taal.c | 900 +++++++++++++++++++++++++++++
+ 3 files changed, 908 insertions(+), 0 deletions(-)
+ create mode 100644 drivers/video/omap2/displays/panel-taal.c
+
+diff --git a/drivers/video/omap2/displays/Kconfig b/drivers/video/omap2/displays/Kconfig
+index 396905d..79d2861 100644
+--- a/drivers/video/omap2/displays/Kconfig
++++ b/drivers/video/omap2/displays/Kconfig
+@@ -19,4 +19,10 @@ config PANEL_SHARP_LS037V7DW01
+ help
+ 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
+diff --git a/drivers/video/omap2/displays/Makefile b/drivers/video/omap2/displays/Makefile
+index a26bbd2..d44e765 100644
+--- a/drivers/video/omap2/displays/Makefile
++++ b/drivers/video/omap2/displays/Makefile
+@@ -1,3 +1,5 @@
+ obj-$(CONFIG_PANEL_GENERIC) += panel-generic.o
+ obj-$(CONFIG_PANEL_SAMSUNG_LTE430WQ_F0C) += panel-samsung-lte430wq-f0c.o
+ obj-$(CONFIG_PANEL_SHARP_LS037V7DW01) += panel-sharp-ls037v7dw01.o
++
++obj-$(CONFIG_PANEL_TAAL) += panel-taal.o
+diff --git a/drivers/video/omap2/displays/panel-taal.c b/drivers/video/omap2/displays/panel-taal.c
+new file mode 100644
+index 0000000..84f0d47
+--- /dev/null
++++ b/drivers/video/omap2/displays/panel-taal.c
+@@ -0,0 +1,900 @@
++/*
++ * 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 <mach/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_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
++
++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;
++};
++
++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;
++ }
++
++ 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 err2;
++ }
++
++ 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 err2;
++ }
++
++ 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 err3;
++ }
++
++ return 0;
++err3:
++ if (td->use_ext_te) {
++ int gpio = dssdev->phy.dsi.ext_te_gpio;
++ free_irq(gpio_to_irq(gpio), dssdev);
++ gpio_free(gpio);
++ }
++err2:
++ backlight_device_unregister(bldev);
++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);
++
++ 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)
++ return r;
++
++ r = taal_get_id(&id1, &id2, &id3);
++ if (r)
++ return r;
++
++ /* 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);
++
++ 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;
++}
++
++static void taal_disable(struct omap_dss_device *dssdev)
++{
++ struct taal_data *td = dev_get_drvdata(&dssdev->dev);
++
++ dev_dbg(&dssdev->dev, "disable\n");
++
++ 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;
++ }
++ }
++
++ r = buf_used;
++
++err:
++ dsi_vc_set_max_rx_packet_size(TCH, 1);
++
++ return r;
++}
++
++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");
+--
+1.6.2.4
+
generated by cgit 1.2.3-korg (git 2.39.0) at 2024-05-22 08:46:51 +0000