DSS: tonka: Add infrastructure for Tonka DSI panel
Add build infrastrastructure support for the Tonka DSI panel.
Panel driver copied from panel-taal.c with s/taal/tonka
diff --git a/drivers/video/omap2/displays/Kconfig b/drivers/video/omap2/displays/Kconfig
index 609a280..82de42f 100644
--- a/drivers/video/omap2/displays/Kconfig
+++ b/drivers/video/omap2/displays/Kconfig
@@ -36,6 +36,13 @@
help
Taal DSI command mode panel from TPO.
+config PANEL_TONKA
+ tristate "Tonka DSI AMOLED Panel"
+ depends on OMAP2_DSS_DSI
+ help
+ AMOLED DSI command mode panel used on Tonka.
+
+
config PANEL_TPO_TD043MTEA1
tristate "TPO TD043MTEA1 LCD Panel"
depends on OMAP2_DSS_DPI && SPI
diff --git a/drivers/video/omap2/displays/Makefile b/drivers/video/omap2/displays/Makefile
index 0f601ab3a..d4ae6a7 100644
--- a/drivers/video/omap2/displays/Makefile
+++ b/drivers/video/omap2/displays/Makefile
@@ -6,3 +6,4 @@
obj-$(CONFIG_PANEL_TAAL) += panel-taal.o
obj-$(CONFIG_PANEL_TPO_TD043MTEA1) += panel-tpo-td043mtea1.o
obj-$(CONFIG_PANEL_ACX565AKM) += panel-acx565akm.o
+obj-$(CONFIG_PANEL_TONKA) += panel-tonka.o
diff --git a/drivers/video/omap2/displays/panel-tonka.c b/drivers/video/omap2/displays/panel-tonka.c
new file mode 100644
index 0000000..a686d5f
--- /dev/null
+++ b/drivers/video/omap2/displays/panel-tonka.c
@@ -0,0 +1,1973 @@
+/*
+ * Tonka 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 <video/omapdss.h>
+#include <video/omap-panel-nokia-dsi.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
+
+static irqreturn_t tonka_te_isr(int irq, void *data);
+static void tonka_te_timeout_work_callback(struct work_struct *work);
+static int _tonka_enable_te(struct omap_dss_device *dssdev, bool enable);
+
+static int tonka_panel_reset(struct omap_dss_device *dssdev);
+
+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_TONKA,
+};
+
+static struct panel_config panel_configs[] = {
+ {
+ .name = "tonka",
+ .type = PANEL_TONKA,
+ .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 tonka_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;
+ int channel;
+
+ struct delayed_work te_timeout_work;
+
+ bool use_dsi_bl;
+
+ bool cabc_broken;
+ unsigned cabc_mode;
+
+ bool intro_printed;
+
+ struct workqueue_struct *workqueue;
+
+ struct delayed_work esd_work;
+ unsigned esd_interval;
+
+ bool ulps_enabled;
+ unsigned ulps_timeout;
+ struct delayed_work ulps_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 tonka_esd_work(struct work_struct *work);
+static void tonka_ulps_work(struct work_struct *work);
+
+static void hw_guard_start(struct tonka_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 tonka_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 tonka_dcs_read_1(struct tonka_data *td, u8 dcs_cmd, u8 *data)
+{
+ int r;
+ u8 buf[1];
+
+ r = dsi_vc_dcs_read(td->dssdev, td->channel, dcs_cmd, buf, 1);
+
+ if (r < 0)
+ return r;
+
+ *data = buf[0];
+
+ return 0;
+}
+
+static int tonka_dcs_write_0(struct tonka_data *td, u8 dcs_cmd)
+{
+ return dsi_vc_dcs_write(td->dssdev, td->channel, &dcs_cmd, 1);
+}
+
+static int tonka_dcs_write_1(struct tonka_data *td, u8 dcs_cmd, u8 param)
+{
+ u8 buf[2];
+ buf[0] = dcs_cmd;
+ buf[1] = param;
+ return dsi_vc_dcs_write(td->dssdev, td->channel, buf, 2);
+}
+
+static int tonka_sleep_in(struct tonka_data *td)
+
+{
+ u8 cmd;
+ int r;
+
+ hw_guard_wait(td);
+
+ cmd = DCS_SLEEP_IN;
+ r = dsi_vc_dcs_write_nosync(td->dssdev, td->channel, &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 tonka_sleep_out(struct tonka_data *td)
+{
+ int r;
+
+ hw_guard_wait(td);
+
+ r = tonka_dcs_write_0(td, 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 tonka_get_id(struct tonka_data *td, u8 *id1, u8 *id2, u8 *id3)
+{
+ int r;
+
+ r = tonka_dcs_read_1(td, DCS_GET_ID1, id1);
+ if (r)
+ return r;
+ r = tonka_dcs_read_1(td, DCS_GET_ID2, id2);
+ if (r)
+ return r;
+ r = tonka_dcs_read_1(td, DCS_GET_ID3, id3);
+ if (r)
+ return r;
+
+ return 0;
+}
+
+static int tonka_set_addr_mode(struct tonka_data *td, u8 rotate, bool mirror)
+{
+ int r;
+ u8 mode;
+ int b5, b6, b7;
+
+ r = tonka_dcs_read_1(td, 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 tonka_dcs_write_1(td, DCS_MEM_ACC_CTRL, mode);
+}
+
+static int tonka_set_update_window(struct tonka_data *td,
+ 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(td->dssdev, td->channel, 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(td->dssdev, td->channel, buf, sizeof(buf));
+ if (r)
+ return r;
+
+ dsi_vc_send_bta_sync(td->dssdev, td->channel);
+
+ return r;
+}
+
+static void tonka_queue_esd_work(struct omap_dss_device *dssdev)
+{
+ struct tonka_data *td = dev_get_drvdata(&dssdev->dev);
+
+ if (td->esd_interval > 0)
+ queue_delayed_work(td->workqueue, &td->esd_work,
+ msecs_to_jiffies(td->esd_interval));
+}
+
+static void tonka_cancel_esd_work(struct omap_dss_device *dssdev)
+{
+ struct tonka_data *td = dev_get_drvdata(&dssdev->dev);
+
+ cancel_delayed_work(&td->esd_work);
+}
+
+static void tonka_queue_ulps_work(struct omap_dss_device *dssdev)
+{
+ struct tonka_data *td = dev_get_drvdata(&dssdev->dev);
+
+ if (td->ulps_timeout > 0)
+ queue_delayed_work(td->workqueue, &td->ulps_work,
+ msecs_to_jiffies(td->ulps_timeout));
+}
+
+static void tonka_cancel_ulps_work(struct omap_dss_device *dssdev)
+{
+ struct tonka_data *td = dev_get_drvdata(&dssdev->dev);
+
+ cancel_delayed_work(&td->ulps_work);
+}
+
+static int tonka_enter_ulps(struct omap_dss_device *dssdev)
+{
+ struct tonka_data *td = dev_get_drvdata(&dssdev->dev);
+ struct nokia_dsi_panel_data *panel_data = get_panel_data(dssdev);
+ int r;
+
+ if (td->ulps_enabled)
+ return 0;
+
+ tonka_cancel_ulps_work(dssdev);
+
+ r = _tonka_enable_te(dssdev, false);
+ if (r)
+ goto err;
+
+ disable_irq(gpio_to_irq(panel_data->ext_te_gpio));
+
+ omapdss_dsi_display_disable(dssdev, false, true);
+
+ td->ulps_enabled = true;
+
+ return 0;
+
+err:
+ dev_err(&dssdev->dev, "enter ULPS failed");
+ tonka_panel_reset(dssdev);
+
+ td->ulps_enabled = false;
+
+ tonka_queue_ulps_work(dssdev);
+
+ return r;
+}
+
+static int tonka_exit_ulps(struct omap_dss_device *dssdev)
+{
+ struct tonka_data *td = dev_get_drvdata(&dssdev->dev);
+ struct nokia_dsi_panel_data *panel_data = get_panel_data(dssdev);
+ int r;
+
+ if (!td->ulps_enabled)
+ return 0;
+
+ r = omapdss_dsi_display_enable(dssdev);
+ if (r) {
+ dev_err(&dssdev->dev, "failed to enable DSI\n");
+ goto err1;
+ }
+
+ omapdss_dsi_vc_enable_hs(dssdev, td->channel, true);
+
+ r = _tonka_enable_te(dssdev, true);
+ if (r) {
+ dev_err(&dssdev->dev, "failed to re-enable TE");
+ goto err2;
+ }
+
+ enable_irq(gpio_to_irq(panel_data->ext_te_gpio));
+
+ tonka_queue_ulps_work(dssdev);
+
+ td->ulps_enabled = false;
+
+ return 0;
+
+err2:
+ dev_err(&dssdev->dev, "failed to exit ULPS");
+
+ r = tonka_panel_reset(dssdev);
+ if (!r) {
+ enable_irq(gpio_to_irq(panel_data->ext_te_gpio));
+ td->ulps_enabled = false;
+ }
+err1:
+ tonka_queue_ulps_work(dssdev);
+
+ return r;
+}
+
+static int tonka_wake_up(struct omap_dss_device *dssdev)
+{
+ struct tonka_data *td = dev_get_drvdata(&dssdev->dev);
+
+ if (td->ulps_enabled)
+ return tonka_exit_ulps(dssdev);
+
+ tonka_cancel_ulps_work(dssdev);
+ tonka_queue_ulps_work(dssdev);
+ return 0;
+}
+
+static int tonka_bl_update_status(struct backlight_device *dev)
+{
+ struct omap_dss_device *dssdev = dev_get_drvdata(&dev->dev);
+ struct tonka_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(dssdev);
+
+ r = tonka_wake_up(dssdev);
+ if (!r)
+ r = tonka_dcs_write_1(td, DCS_BRIGHTNESS, level);
+
+ dsi_bus_unlock(dssdev);
+ } 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 tonka_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 tonka_bl_ops = {
+ .get_brightness = tonka_bl_get_intensity,
+ .update_status = tonka_bl_update_status,
+};
+
+static void tonka_get_timings(struct omap_dss_device *dssdev,
+ struct omap_video_timings *timings)
+{
+ *timings = dssdev->panel.timings;
+}
+
+static void tonka_get_resolution(struct omap_dss_device *dssdev,
+ u16 *xres, u16 *yres)
+{
+ struct tonka_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 tonka_num_errors_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct omap_dss_device *dssdev = to_dss_device(dev);
+ struct tonka_data *td = dev_get_drvdata(&dssdev->dev);
+ u8 errors;
+ int r;
+
+ mutex_lock(&td->lock);
+
+ if (td->enabled) {
+ dsi_bus_lock(dssdev);
+
+ r = tonka_wake_up(dssdev);
+ if (!r)
+ r = tonka_dcs_read_1(td, DCS_READ_NUM_ERRORS, &errors);
+
+ dsi_bus_unlock(dssdev);
+ } else {
+ r = -ENODEV;
+ }
+
+ mutex_unlock(&td->lock);
+
+ if (r)
+ return r;
+
+ return snprintf(buf, PAGE_SIZE, "%d\n", errors);
+}
+
+static ssize_t tonka_hw_revision_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct omap_dss_device *dssdev = to_dss_device(dev);
+ struct tonka_data *td = dev_get_drvdata(&dssdev->dev);
+ u8 id1, id2, id3;
+ int r;
+
+ mutex_lock(&td->lock);
+
+ if (td->enabled) {
+ dsi_bus_lock(dssdev);
+
+ r = tonka_wake_up(dssdev);
+ if (!r)
+ r = tonka_get_id(td, &id1, &id2, &id3);
+
+ dsi_bus_unlock(dssdev);
+ } 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 tonka_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 tonka_data *td = dev_get_drvdata(&dssdev->dev);
+ int i;
+ int r;
+
+ 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(dssdev);
+
+ if (!td->cabc_broken) {
+ r = tonka_wake_up(dssdev);
+ if (r)
+ goto err;
+
+ r = tonka_dcs_write_1(td, DCS_WRITE_CABC, i);
+ if (r)
+ goto err;
+ }
+
+ dsi_bus_unlock(dssdev);
+ }
+
+ td->cabc_mode = i;
+
+ mutex_unlock(&td->lock);
+
+ return count;
+err:
+ dsi_bus_unlock(dssdev);
+ mutex_unlock(&td->lock);
+ return r;
+}
+
+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 ssize_t tonka_store_esd_interval(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct omap_dss_device *dssdev = to_dss_device(dev);
+ struct tonka_data *td = dev_get_drvdata(&dssdev->dev);
+
+ unsigned long t;
+ int r;
+
+ r = strict_strtoul(buf, 10, &t);
+ if (r)
+ return r;
+
+ mutex_lock(&td->lock);
+ tonka_cancel_esd_work(dssdev);
+ td->esd_interval = t;
+ if (td->enabled)
+ tonka_queue_esd_work(dssdev);
+ mutex_unlock(&td->lock);
+
+ return count;
+}
+
+static ssize_t tonka_show_esd_interval(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct omap_dss_device *dssdev = to_dss_device(dev);
+ struct tonka_data *td = dev_get_drvdata(&dssdev->dev);
+ unsigned t;
+
+ mutex_lock(&td->lock);
+ t = td->esd_interval;
+ mutex_unlock(&td->lock);
+
+ return snprintf(buf, PAGE_SIZE, "%u\n", t);
+}
+
+static ssize_t tonka_store_ulps(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct omap_dss_device *dssdev = to_dss_device(dev);
+ struct tonka_data *td = dev_get_drvdata(&dssdev->dev);
+ unsigned long t;
+ int r;
+
+ r = strict_strtoul(buf, 10, &t);
+ if (r)
+ return r;
+
+ mutex_lock(&td->lock);
+
+ if (td->enabled) {
+ dsi_bus_lock(dssdev);
+
+ if (t)
+ r = tonka_enter_ulps(dssdev);
+ else
+ r = tonka_wake_up(dssdev);
+
+ dsi_bus_unlock(dssdev);
+ }
+
+ mutex_unlock(&td->lock);
+
+ if (r)
+ return r;
+
+ return count;
+}
+
+static ssize_t tonka_show_ulps(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct omap_dss_device *dssdev = to_dss_device(dev);
+ struct tonka_data *td = dev_get_drvdata(&dssdev->dev);
+ unsigned t;
+
+ mutex_lock(&td->lock);
+ t = td->ulps_enabled;
+ mutex_unlock(&td->lock);
+
+ return snprintf(buf, PAGE_SIZE, "%u\n", t);
+}
+
+static ssize_t tonka_store_ulps_timeout(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct omap_dss_device *dssdev = to_dss_device(dev);
+ struct tonka_data *td = dev_get_drvdata(&dssdev->dev);
+ unsigned long t;
+ int r;
+
+ r = strict_strtoul(buf, 10, &t);
+ if (r)
+ return r;
+
+ mutex_lock(&td->lock);
+ td->ulps_timeout = t;
+
+ if (td->enabled) {
+ /* tonka_wake_up will restart the timer */
+ dsi_bus_lock(dssdev);
+ r = tonka_wake_up(dssdev);
+ dsi_bus_unlock(dssdev);
+ }
+
+ mutex_unlock(&td->lock);
+
+ if (r)
+ return r;
+
+ return count;
+}
+
+static ssize_t tonka_show_ulps_timeout(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct omap_dss_device *dssdev = to_dss_device(dev);
+ struct tonka_data *td = dev_get_drvdata(&dssdev->dev);
+ unsigned t;
+
+ mutex_lock(&td->lock);
+ t = td->ulps_timeout;
+ mutex_unlock(&td->lock);
+
+ return snprintf(buf, PAGE_SIZE, "%u\n", t);
+}
+
+static DEVICE_ATTR(num_dsi_errors, S_IRUGO, tonka_num_errors_show, NULL);
+static DEVICE_ATTR(hw_revision, S_IRUGO, tonka_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 DEVICE_ATTR(esd_interval, S_IRUGO | S_IWUSR,
+ tonka_show_esd_interval, tonka_store_esd_interval);
+static DEVICE_ATTR(ulps, S_IRUGO | S_IWUSR,
+ tonka_show_ulps, tonka_store_ulps);
+static DEVICE_ATTR(ulps_timeout, S_IRUGO | S_IWUSR,
+ tonka_show_ulps_timeout, tonka_store_ulps_timeout);
+
+static struct attribute *tonka_attrs[] = {
+ &dev_attr_num_dsi_errors.attr,
+ &dev_attr_hw_revision.attr,
+ &dev_attr_cabc_mode.attr,
+ &dev_attr_cabc_available_modes.attr,
+ &dev_attr_esd_interval.attr,
+ &dev_attr_ulps.attr,
+ &dev_attr_ulps_timeout.attr,
+ NULL,
+};
+
+static struct attribute_group tonka_attr_group = {
+ .attrs = tonka_attrs,
+};
+
+static void tonka_hw_reset(struct omap_dss_device *dssdev)
+{
+ struct tonka_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 tonka_probe(struct omap_dss_device *dssdev)
+{
+ struct backlight_properties props;
+ struct tonka_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;
+ td->esd_interval = panel_data->esd_interval;
+ td->ulps_enabled = false;
+ td->ulps_timeout = panel_data->ulps_timeout;
+
+ 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->workqueue = create_singlethread_workqueue("tonka_esd");
+ if (td->workqueue == NULL) {
+ dev_err(&dssdev->dev, "can't create ESD workqueue\n");
+ r = -ENOMEM;
+ goto err_wq;
+ }
+ INIT_DELAYED_WORK_DEFERRABLE(&td->esd_work, tonka_esd_work);
+ INIT_DELAYED_WORK(&td->ulps_work, tonka_ulps_work);
+
+ dev_set_drvdata(&dssdev->dev, td);
+
+ tonka_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;
+
+ props.type = BACKLIGHT_RAW;
+ bldev = backlight_device_register(dev_name(&dssdev->dev), &dssdev->dev,
+ dssdev, &tonka_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;
+
+ tonka_bl_update_status(bldev);
+
+ if (panel_data->use_ext_te) {
+ int gpio = panel_data->ext_te_gpio;
+
+ r = gpio_request(gpio, "tonka 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), tonka_te_isr,
+ IRQF_DISABLED | IRQF_TRIGGER_RISING,
+ "tonka 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,
+ tonka_te_timeout_work_callback);
+
+ dev_dbg(&dssdev->dev, "Using GPIO TE\n");
+ }
+
+ r = omap_dsi_request_vc(dssdev, &td->channel);
+ if (r) {
+ dev_err(&dssdev->dev, "failed to get virtual channel\n");
+ goto err_req_vc;
+ }
+
+ r = omap_dsi_set_vc_id(dssdev, td->channel, TCH);
+ if (r) {
+ dev_err(&dssdev->dev, "failed to set VC_ID\n");
+ goto err_vc_id;
+ }
+
+ r = sysfs_create_group(&dssdev->dev.kobj, &tonka_attr_group);
+ if (r) {
+ dev_err(&dssdev->dev, "failed to create sysfs files\n");
+ goto err_vc_id;
+ }
+
+ return 0;
+
+err_vc_id:
+ omap_dsi_release_vc(dssdev, td->channel);
+err_req_vc:
+ 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->workqueue);
+err_wq:
+ free_regulators(panel_config->regulators, panel_config->num_regulators);
+err_reg:
+ kfree(td);
+err:
+ return r;
+}
+
+static void __exit tonka_remove(struct omap_dss_device *dssdev)
+{
+ struct tonka_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, &tonka_attr_group);
+ omap_dsi_release_vc(dssdev, td->channel);
+
+ 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;
+ tonka_bl_update_status(bldev);
+ backlight_device_unregister(bldev);
+
+ tonka_cancel_ulps_work(dssdev);
+ tonka_cancel_esd_work(dssdev);
+ destroy_workqueue(td->workqueue);
+
+ /* reset, to be sure that the panel is in a valid state */
+ tonka_hw_reset(dssdev);
+
+ free_regulators(td->panel_config->regulators,
+ td->panel_config->num_regulators);
+
+ kfree(td);
+}
+
+static int tonka_power_on(struct omap_dss_device *dssdev)
+{
+ struct tonka_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;
+ }
+
+ tonka_hw_reset(dssdev);
+
+ omapdss_dsi_vc_enable_hs(dssdev, td->channel, false);
+
+ r = tonka_sleep_out(td);
+ if (r)
+ goto err;
+
+ r = tonka_get_id(td, &id1, &id2, &id3);
+ if (r)
+ goto err;
+
+ /* on early Tonka revisions CABC is broken */
+ if (td->panel_config->type == PANEL_TONKA &&
+ (id2 == 0x00 || id2 == 0xff || id2 == 0x81))
+ td->cabc_broken = true;
+
+ r = tonka_dcs_write_1(td, DCS_BRIGHTNESS, 0xff);
+ if (r)
+ goto err;
+
+ r = tonka_dcs_write_1(td, DCS_CTRL_DISPLAY,
+ (1<<2) | (1<<5)); /* BL | BCTRL */
+ if (r)
+ goto err;
+
+ r = tonka_dcs_write_1(td, DCS_PIXEL_FORMAT, 0x7); /* 24bit/pixel */
+ if (r)
+ goto err;
+
+ r = tonka_set_addr_mode(td, td->rotate, td->mirror);
+ if (r)
+ goto err;
+
+ if (!td->cabc_broken) {
+ r = tonka_dcs_write_1(td, DCS_WRITE_CABC, td->cabc_mode);
+ if (r)
+ goto err;
+ }
+
+ r = tonka_dcs_write_0(td, DCS_DISPLAY_ON);
+ if (r)
+ goto err;
+
+ r = _tonka_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 Tonka version, CABC disabled\n");
+ td->intro_printed = true;
+ }
+
+ omapdss_dsi_vc_enable_hs(dssdev, td->channel, true);
+
+ return 0;
+err:
+ dev_err(&dssdev->dev, "error while enabling panel, issuing HW reset\n");
+
+ tonka_hw_reset(dssdev);
+
+ omapdss_dsi_display_disable(dssdev, true, false);
+err0:
+ return r;
+}
+
+static void tonka_power_off(struct omap_dss_device *dssdev)
+{
+ struct tonka_data *td = dev_get_drvdata(&dssdev->dev);
+ int r;
+
+ r = tonka_dcs_write_0(td, DCS_DISPLAY_OFF);
+ if (!r)
+ r = tonka_sleep_in(td);
+
+ if (r) {
+ dev_err(&dssdev->dev,
+ "error disabling panel, issuing HW reset\n");
+ tonka_hw_reset(dssdev);
+ }
+
+ omapdss_dsi_display_disable(dssdev, true, false);
+
+ td->enabled = 0;
+}
+
+static int tonka_panel_reset(struct omap_dss_device *dssdev)
+{
+ dev_err(&dssdev->dev, "performing LCD reset\n");
+
+ tonka_power_off(dssdev);
+ tonka_hw_reset(dssdev);
+ return tonka_power_on(dssdev);
+}
+
+static int tonka_enable(struct omap_dss_device *dssdev)
+{
+ struct tonka_data *td = dev_get_drvdata(&dssdev->dev);
+ 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(dssdev);
+
+ r = tonka_power_on(dssdev);
+
+ dsi_bus_unlock(dssdev);
+
+ if (r)
+ goto err;
+
+ tonka_queue_esd_work(dssdev);
+
+ 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 tonka_disable(struct omap_dss_device *dssdev)
+{
+ struct tonka_data *td = dev_get_drvdata(&dssdev->dev);
+
+ dev_dbg(&dssdev->dev, "disable\n");
+
+ mutex_lock(&td->lock);
+
+ tonka_cancel_ulps_work(dssdev);
+ tonka_cancel_esd_work(dssdev);
+
+ dsi_bus_lock(dssdev);
+
+ if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE) {
+ int r;
+
+ r = tonka_wake_up(dssdev);
+ if (!r)
+ tonka_power_off(dssdev);
+ }
+
+ dsi_bus_unlock(dssdev);
+
+ dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
+
+ mutex_unlock(&td->lock);
+}
+
+static int tonka_suspend(struct omap_dss_device *dssdev)
+{
+ struct tonka_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;
+ }
+
+ tonka_cancel_ulps_work(dssdev);
+ tonka_cancel_esd_work(dssdev);
+
+ dsi_bus_lock(dssdev);
+
+ r = tonka_wake_up(dssdev);
+ if (!r)
+ tonka_power_off(dssdev);
+
+ dsi_bus_unlock(dssdev);
+
+ dssdev->state = OMAP_DSS_DISPLAY_SUSPENDED;
+
+ mutex_unlock(&td->lock);
+
+ return 0;
+err:
+ mutex_unlock(&td->lock);
+ return r;
+}
+
+static int tonka_resume(struct omap_dss_device *dssdev)
+{
+ struct tonka_data *td = dev_get_drvdata(&dssdev->dev);
+ 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(dssdev);
+
+ r = tonka_power_on(dssdev);
+
+ dsi_bus_unlock(dssdev);
+
+ if (r) {
+ dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
+ } else {
+ dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
+ tonka_queue_esd_work(dssdev);
+ }
+
+ mutex_unlock(&td->lock);
+
+ return r;
+err:
+ mutex_unlock(&td->lock);
+ return r;
+}
+
+static void tonka_framedone_cb(int err, void *data)
+{
+ struct omap_dss_device *dssdev = data;
+ dev_dbg(&dssdev->dev, "framedone, err %d\n", err);
+ dsi_bus_unlock(dssdev);
+}
+
+static irqreturn_t tonka_te_isr(int irq, void *data)
+{
+ struct omap_dss_device *dssdev = data;
+ struct tonka_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, td->channel,
+ td->update_region.x,
+ td->update_region.y,
+ td->update_region.w,
+ td->update_region.h,
+ tonka_framedone_cb, dssdev);
+ if (r)
+ goto err;
+ }
+
+ return IRQ_HANDLED;
+err:
+ dev_err(&dssdev->dev, "start update failed\n");
+ dsi_bus_unlock(dssdev);
+ return IRQ_HANDLED;
+}
+
+static void tonka_te_timeout_work_callback(struct work_struct *work)
+{
+ struct tonka_data *td = container_of(work, struct tonka_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(dssdev);
+}
+
+static int tonka_update(struct omap_dss_device *dssdev,
+ u16 x, u16 y, u16 w, u16 h)
+{
+ struct tonka_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(dssdev);
+
+ r = tonka_wake_up(dssdev);
+ if (r)
+ goto err;
+
+ if (!td->enabled) {
+ r = 0;
+ goto err;
+ }
+
+ r = omap_dsi_prepare_update(dssdev, &x, &y, &w, &h, true);
+ if (r)
+ goto err;
+
+ r = tonka_set_update_window(td, 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, td->channel, x, y, w, h,
+ tonka_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(dssdev);
+ mutex_unlock(&td->lock);
+ return r;
+}
+
+static int tonka_sync(struct omap_dss_device *dssdev)
+{
+ struct tonka_data *td = dev_get_drvdata(&dssdev->dev);
+
+ dev_dbg(&dssdev->dev, "sync\n");
+
+ mutex_lock(&td->lock);
+ dsi_bus_lock(dssdev);
+ dsi_bus_unlock(dssdev);
+ mutex_unlock(&td->lock);
+
+ dev_dbg(&dssdev->dev, "sync done\n");
+
+ return 0;
+}
+
+static int _tonka_enable_te(struct omap_dss_device *dssdev, bool enable)
+{
+ struct tonka_data *td = dev_get_drvdata(&dssdev->dev);
+ struct nokia_dsi_panel_data *panel_data = get_panel_data(dssdev);
+ int r;
+
+ if (enable)
+ r = tonka_dcs_write_1(td, DCS_TEAR_ON, 0);
+ else
+ r = tonka_dcs_write_0(td, 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 tonka_enable_te(struct omap_dss_device *dssdev, bool enable)
+{
+ struct tonka_data *td = dev_get_drvdata(&dssdev->dev);
+ int r;
+
+ mutex_lock(&td->lock);
+
+ if (td->te_enabled == enable)
+ goto end;
+
+ dsi_bus_lock(dssdev);
+
+ if (td->enabled) {
+ r = tonka_wake_up(dssdev);
+ if (r)
+ goto err;
+
+ r = _tonka_enable_te(dssdev, enable);
+ if (r)
+ goto err;
+ }
+
+ td->te_enabled = enable;
+
+ dsi_bus_unlock(dssdev);
+end:
+ mutex_unlock(&td->lock);
+
+ return 0;
+err:
+ dsi_bus_unlock(dssdev);
+ mutex_unlock(&td->lock);
+
+ return r;
+}
+
+static int tonka_get_te(struct omap_dss_device *dssdev)
+{
+ struct tonka_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 tonka_rotate(struct omap_dss_device *dssdev, u8 rotate)
+{
+ struct tonka_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(dssdev);
+
+ if (td->enabled) {
+ r = tonka_wake_up(dssdev);
+ if (r)
+ goto err;
+
+ r = tonka_set_addr_mode(td, rotate, td->mirror);
+ if (r)
+ goto err;
+ }
+
+ td->rotate = rotate;
+
+ dsi_bus_unlock(dssdev);
+end:
+ mutex_unlock(&td->lock);
+ return 0;
+err:
+ dsi_bus_unlock(dssdev);
+ mutex_unlock(&td->lock);
+ return r;
+}
+
+static u8 tonka_get_rotate(struct omap_dss_device *dssdev)
+{
+ struct tonka_data *td = dev_get_drvdata(&dssdev->dev);
+ int r;
+
+ mutex_lock(&td->lock);
+ r = td->rotate;
+ mutex_unlock(&td->lock);
+
+ return r;
+}
+
+static int tonka_mirror(struct omap_dss_device *dssdev, bool enable)
+{
+ struct tonka_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(dssdev);
+ if (td->enabled) {
+ r = tonka_wake_up(dssdev);
+ if (r)
+ goto err;
+
+ r = tonka_set_addr_mode(td, td->rotate, enable);
+ if (r)
+ goto err;
+ }
+
+ td->mirror = enable;
+
+ dsi_bus_unlock(dssdev);
+end:
+ mutex_unlock(&td->lock);
+ return 0;
+err:
+ dsi_bus_unlock(dssdev);
+ mutex_unlock(&td->lock);
+ return r;
+}
+
+static bool tonka_get_mirror(struct omap_dss_device *dssdev)
+{
+ struct tonka_data *td = dev_get_drvdata(&dssdev->dev);
+ int r;
+
+ mutex_lock(&td->lock);
+ r = td->mirror;
+ mutex_unlock(&td->lock);
+
+ return r;
+}
+
+static int tonka_run_test(struct omap_dss_device *dssdev, int test_num)
+{
+ struct tonka_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(dssdev);
+
+ r = tonka_wake_up(dssdev);
+ if (r)
+ goto err2;
+
+ r = tonka_dcs_read_1(td, DCS_GET_ID1, &id1);
+ if (r)
+ goto err2;
+ r = tonka_dcs_read_1(td, DCS_GET_ID2, &id2);
+ if (r)
+ goto err2;
+ r = tonka_dcs_read_1(td, DCS_GET_ID3, &id3);
+ if (r)
+ goto err2;
+
+ dsi_bus_unlock(dssdev);
+ mutex_unlock(&td->lock);
+ return 0;
+err2:
+ dsi_bus_unlock(dssdev);
+err1:
+ mutex_unlock(&td->lock);
+ return r;
+}
+
+static int tonka_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 tonka_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(dssdev);
+
+ r = tonka_wake_up(dssdev);
+ if (r)
+ goto err2;
+
+ /* 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;
+
+ tonka_set_update_window(td, x, y, w, h);
+
+ r = dsi_vc_set_max_rx_packet_size(dssdev, td->channel, plen);
+ if (r)
+ goto err2;
+
+ while (buf_used < size) {
+ u8 dcs_cmd = first ? 0x2e : 0x3e;
+ first = 0;
+
+ r = dsi_vc_dcs_read(dssdev, td->channel, 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(dssdev, td->channel, 1);
+err2:
+ dsi_bus_unlock(dssdev);
+err1:
+ mutex_unlock(&td->lock);
+ return r;
+}
+
+static void tonka_ulps_work(struct work_struct *work)
+{
+ struct tonka_data *td = container_of(work, struct tonka_data,
+ ulps_work.work);
+ struct omap_dss_device *dssdev = td->dssdev;
+
+ mutex_lock(&td->lock);
+
+ if (dssdev->state != OMAP_DSS_DISPLAY_ACTIVE || !td->enabled) {
+ mutex_unlock(&td->lock);
+ return;
+ }
+
+ dsi_bus_lock(dssdev);
+
+ tonka_enter_ulps(dssdev);
+
+ dsi_bus_unlock(dssdev);
+ mutex_unlock(&td->lock);
+}
+
+static void tonka_esd_work(struct work_struct *work)
+{
+ struct tonka_data *td = container_of(work, struct tonka_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(dssdev);
+
+ r = tonka_wake_up(dssdev);
+ if (r) {
+ dev_err(&dssdev->dev, "failed to exit ULPS\n");
+ goto err;
+ }
+
+ r = tonka_dcs_read_1(td, DCS_RDDSDR, &state1);
+ if (r) {
+ dev_err(&dssdev->dev, "failed to read Tonka status\n");
+ goto err;
+ }
+
+ /* Run self diagnostics */
+ r = tonka_sleep_out(td);
+ if (r) {
+ dev_err(&dssdev->dev, "failed to run Tonka self-diagnostics\n");
+ goto err;
+ }
+
+ r = tonka_dcs_read_1(td, DCS_RDDSDR, &state2);
+ if (r) {
+ dev_err(&dssdev->dev, "failed to read Tonka 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 = tonka_dcs_write_1(td, DCS_TEAR_ON, 0);
+ if (r)
+ goto err;
+ }
+
+ dsi_bus_unlock(dssdev);
+
+ tonka_queue_esd_work(dssdev);
+
+ mutex_unlock(&td->lock);
+ return;
+err:
+ dev_err(&dssdev->dev, "performing LCD reset\n");
+
+ tonka_panel_reset(dssdev);
+
+ dsi_bus_unlock(dssdev);
+
+ tonka_queue_esd_work(dssdev);
+
+ mutex_unlock(&td->lock);
+}
+
+static int tonka_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 tonka_get_update_mode(
+ struct omap_dss_device *dssdev)
+{
+ return OMAP_DSS_UPDATE_MANUAL;
+}
+
+static struct omap_dss_driver tonka_driver = {
+ .probe = tonka_probe,
+ .remove = __exit_p(tonka_remove),
+
+ .enable = tonka_enable,
+ .disable = tonka_disable,
+ .suspend = tonka_suspend,
+ .resume = tonka_resume,
+
+ .set_update_mode = tonka_set_update_mode,
+ .get_update_mode = tonka_get_update_mode,
+
+ .update = tonka_update,
+ .sync = tonka_sync,
+
+ .get_resolution = tonka_get_resolution,
+ .get_recommended_bpp = omapdss_default_get_recommended_bpp,
+
+ .enable_te = tonka_enable_te,
+ .get_te = tonka_get_te,
+
+ .set_rotate = tonka_rotate,
+ .get_rotate = tonka_get_rotate,
+ .set_mirror = tonka_mirror,
+ .get_mirror = tonka_get_mirror,
+ .run_test = tonka_run_test,
+ .memory_read = tonka_memory_read,
+
+ .get_timings = tonka_get_timings,
+
+ .driver = {
+ .name = "tonka",
+ .owner = THIS_MODULE,
+ },
+};
+
+static int __init tonka_init(void)
+{
+ omap_dss_register_driver(&tonka_driver);
+
+ return 0;
+}
+
+static void __exit tonka_exit(void)
+{
+ omap_dss_unregister_driver(&tonka_driver);
+}
+
+module_init(tonka_init);
+module_exit(tonka_exit);
+
+MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@nokia.com>");
+MODULE_DESCRIPTION("Tonka Driver");
+MODULE_LICENSE("GPL");
