1916 lines
38 KiB
C
1916 lines
38 KiB
C
/*
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* Taal DSI command mode panel
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*
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* Copyright (C) 2009 Nokia Corporation
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* Author: Tomi Valkeinen <tomi.valkeinen@nokia.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published by
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* the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/*#define DEBUG*/
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#include <linux/module.h>
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#include <linux/delay.h>
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#include <linux/err.h>
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#include <linux/jiffies.h>
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#include <linux/sched.h>
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#include <linux/backlight.h>
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#include <linux/fb.h>
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#include <linux/interrupt.h>
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#include <linux/gpio.h>
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#include <linux/workqueue.h>
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#include <linux/slab.h>
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#include <linux/regulator/consumer.h>
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#include <linux/mutex.h>
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#include <video/omapdss.h>
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#include <video/omap-panel-nokia-dsi.h>
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#include <video/mipi_display.h>
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/* DSI Virtual channel. Hardcoded for now. */
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#define TCH 0
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#define DCS_READ_NUM_ERRORS 0x05
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#define DCS_BRIGHTNESS 0x51
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#define DCS_CTRL_DISPLAY 0x53
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#define DCS_WRITE_CABC 0x55
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#define DCS_READ_CABC 0x56
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#define DCS_GET_ID1 0xda
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#define DCS_GET_ID2 0xdb
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#define DCS_GET_ID3 0xdc
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static irqreturn_t taal_te_isr(int irq, void *data);
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static void taal_te_timeout_work_callback(struct work_struct *work);
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static int _taal_enable_te(struct omap_dss_device *dssdev, bool enable);
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static int taal_panel_reset(struct omap_dss_device *dssdev);
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struct panel_regulator {
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struct regulator *regulator;
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const char *name;
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int min_uV;
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int max_uV;
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};
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static void free_regulators(struct panel_regulator *regulators, int n)
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{
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int i;
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for (i = 0; i < n; i++) {
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/* disable/put in reverse order */
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regulator_disable(regulators[n - i - 1].regulator);
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regulator_put(regulators[n - i - 1].regulator);
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}
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}
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static int init_regulators(struct omap_dss_device *dssdev,
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struct panel_regulator *regulators, int n)
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{
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int r, i, v;
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for (i = 0; i < n; i++) {
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struct regulator *reg;
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reg = regulator_get(&dssdev->dev, regulators[i].name);
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if (IS_ERR(reg)) {
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dev_err(&dssdev->dev, "failed to get regulator %s\n",
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regulators[i].name);
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r = PTR_ERR(reg);
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goto err;
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}
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/* FIXME: better handling of fixed vs. variable regulators */
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v = regulator_get_voltage(reg);
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if (v < regulators[i].min_uV || v > regulators[i].max_uV) {
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r = regulator_set_voltage(reg, regulators[i].min_uV,
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regulators[i].max_uV);
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if (r) {
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dev_err(&dssdev->dev,
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"failed to set regulator %s voltage\n",
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regulators[i].name);
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regulator_put(reg);
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goto err;
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}
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}
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r = regulator_enable(reg);
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if (r) {
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dev_err(&dssdev->dev, "failed to enable regulator %s\n",
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regulators[i].name);
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regulator_put(reg);
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goto err;
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}
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regulators[i].regulator = reg;
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}
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return 0;
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err:
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free_regulators(regulators, i);
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return r;
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}
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/**
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* struct panel_config - panel configuration
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* @name: panel name
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* @type: panel type
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* @timings: panel resolution
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* @sleep: various panel specific delays, passed to msleep() if non-zero
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* @reset_sequence: reset sequence timings, passed to udelay() if non-zero
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* @regulators: array of panel regulators
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* @num_regulators: number of regulators in the array
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*/
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struct panel_config {
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const char *name;
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int type;
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struct omap_video_timings timings;
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struct {
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unsigned int sleep_in;
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unsigned int sleep_out;
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unsigned int hw_reset;
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unsigned int enable_te;
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} sleep;
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struct {
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unsigned int high;
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unsigned int low;
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} reset_sequence;
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struct panel_regulator *regulators;
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int num_regulators;
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};
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enum {
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PANEL_TAAL,
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};
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static struct panel_config panel_configs[] = {
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{
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.name = "taal",
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.type = PANEL_TAAL,
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.timings = {
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.x_res = 864,
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.y_res = 480,
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},
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.sleep = {
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.sleep_in = 5,
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.sleep_out = 5,
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.hw_reset = 5,
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.enable_te = 100, /* possible panel bug */
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},
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.reset_sequence = {
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.high = 10,
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.low = 10,
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},
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},
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};
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struct taal_data {
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struct mutex lock;
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struct backlight_device *bldev;
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unsigned long hw_guard_end; /* next value of jiffies when we can
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* issue the next sleep in/out command
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*/
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unsigned long hw_guard_wait; /* max guard time in jiffies */
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struct omap_dss_device *dssdev;
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bool enabled;
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u8 rotate;
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bool mirror;
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bool te_enabled;
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atomic_t do_update;
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int channel;
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struct delayed_work te_timeout_work;
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bool cabc_broken;
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unsigned cabc_mode;
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bool intro_printed;
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struct workqueue_struct *workqueue;
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struct delayed_work esd_work;
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unsigned esd_interval;
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bool ulps_enabled;
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unsigned ulps_timeout;
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struct delayed_work ulps_work;
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struct panel_config *panel_config;
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};
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static inline struct nokia_dsi_panel_data
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*get_panel_data(const struct omap_dss_device *dssdev)
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{
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return (struct nokia_dsi_panel_data *) dssdev->data;
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}
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static void taal_esd_work(struct work_struct *work);
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static void taal_ulps_work(struct work_struct *work);
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static void hw_guard_start(struct taal_data *td, int guard_msec)
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{
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td->hw_guard_wait = msecs_to_jiffies(guard_msec);
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td->hw_guard_end = jiffies + td->hw_guard_wait;
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}
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static void hw_guard_wait(struct taal_data *td)
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{
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unsigned long wait = td->hw_guard_end - jiffies;
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if ((long)wait > 0 && wait <= td->hw_guard_wait) {
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set_current_state(TASK_UNINTERRUPTIBLE);
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schedule_timeout(wait);
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}
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}
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static int taal_dcs_read_1(struct taal_data *td, u8 dcs_cmd, u8 *data)
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{
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int r;
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u8 buf[1];
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r = dsi_vc_dcs_read(td->dssdev, td->channel, dcs_cmd, buf, 1);
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if (r < 0)
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return r;
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*data = buf[0];
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return 0;
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}
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static int taal_dcs_write_0(struct taal_data *td, u8 dcs_cmd)
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{
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return dsi_vc_dcs_write(td->dssdev, td->channel, &dcs_cmd, 1);
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}
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static int taal_dcs_write_1(struct taal_data *td, u8 dcs_cmd, u8 param)
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{
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u8 buf[2];
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buf[0] = dcs_cmd;
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buf[1] = param;
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return dsi_vc_dcs_write(td->dssdev, td->channel, buf, 2);
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}
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static int taal_sleep_in(struct taal_data *td)
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{
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u8 cmd;
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int r;
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hw_guard_wait(td);
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cmd = MIPI_DCS_ENTER_SLEEP_MODE;
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r = dsi_vc_dcs_write_nosync(td->dssdev, td->channel, &cmd, 1);
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if (r)
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return r;
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hw_guard_start(td, 120);
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if (td->panel_config->sleep.sleep_in)
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msleep(td->panel_config->sleep.sleep_in);
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return 0;
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}
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static int taal_sleep_out(struct taal_data *td)
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{
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int r;
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hw_guard_wait(td);
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r = taal_dcs_write_0(td, MIPI_DCS_EXIT_SLEEP_MODE);
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if (r)
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return r;
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hw_guard_start(td, 120);
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if (td->panel_config->sleep.sleep_out)
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msleep(td->panel_config->sleep.sleep_out);
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return 0;
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}
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static int taal_get_id(struct taal_data *td, u8 *id1, u8 *id2, u8 *id3)
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{
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int r;
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r = taal_dcs_read_1(td, DCS_GET_ID1, id1);
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if (r)
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return r;
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r = taal_dcs_read_1(td, DCS_GET_ID2, id2);
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if (r)
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return r;
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r = taal_dcs_read_1(td, DCS_GET_ID3, id3);
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if (r)
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return r;
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return 0;
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}
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static int taal_set_addr_mode(struct taal_data *td, u8 rotate, bool mirror)
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{
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int r;
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u8 mode;
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int b5, b6, b7;
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r = taal_dcs_read_1(td, MIPI_DCS_GET_ADDRESS_MODE, &mode);
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if (r)
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return r;
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switch (rotate) {
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default:
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case 0:
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b7 = 0;
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b6 = 0;
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b5 = 0;
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break;
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case 1:
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b7 = 0;
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b6 = 1;
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b5 = 1;
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break;
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case 2:
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b7 = 1;
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b6 = 1;
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b5 = 0;
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break;
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case 3:
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b7 = 1;
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b6 = 0;
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b5 = 1;
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break;
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}
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if (mirror)
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b6 = !b6;
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mode &= ~((1<<7) | (1<<6) | (1<<5));
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mode |= (b7 << 7) | (b6 << 6) | (b5 << 5);
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return taal_dcs_write_1(td, MIPI_DCS_SET_ADDRESS_MODE, mode);
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}
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static int taal_set_update_window(struct taal_data *td,
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u16 x, u16 y, u16 w, u16 h)
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{
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int r;
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u16 x1 = x;
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u16 x2 = x + w - 1;
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u16 y1 = y;
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u16 y2 = y + h - 1;
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u8 buf[5];
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buf[0] = MIPI_DCS_SET_COLUMN_ADDRESS;
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buf[1] = (x1 >> 8) & 0xff;
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buf[2] = (x1 >> 0) & 0xff;
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buf[3] = (x2 >> 8) & 0xff;
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buf[4] = (x2 >> 0) & 0xff;
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r = dsi_vc_dcs_write_nosync(td->dssdev, td->channel, buf, sizeof(buf));
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if (r)
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return r;
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buf[0] = MIPI_DCS_SET_PAGE_ADDRESS;
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buf[1] = (y1 >> 8) & 0xff;
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buf[2] = (y1 >> 0) & 0xff;
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buf[3] = (y2 >> 8) & 0xff;
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buf[4] = (y2 >> 0) & 0xff;
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r = dsi_vc_dcs_write_nosync(td->dssdev, td->channel, buf, sizeof(buf));
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if (r)
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return r;
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dsi_vc_send_bta_sync(td->dssdev, td->channel);
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return r;
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}
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static void taal_queue_esd_work(struct omap_dss_device *dssdev)
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{
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struct taal_data *td = dev_get_drvdata(&dssdev->dev);
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if (td->esd_interval > 0)
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queue_delayed_work(td->workqueue, &td->esd_work,
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msecs_to_jiffies(td->esd_interval));
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}
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static void taal_cancel_esd_work(struct omap_dss_device *dssdev)
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{
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struct taal_data *td = dev_get_drvdata(&dssdev->dev);
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cancel_delayed_work(&td->esd_work);
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}
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static void taal_queue_ulps_work(struct omap_dss_device *dssdev)
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{
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struct taal_data *td = dev_get_drvdata(&dssdev->dev);
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if (td->ulps_timeout > 0)
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queue_delayed_work(td->workqueue, &td->ulps_work,
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msecs_to_jiffies(td->ulps_timeout));
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}
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static void taal_cancel_ulps_work(struct omap_dss_device *dssdev)
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{
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struct taal_data *td = dev_get_drvdata(&dssdev->dev);
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cancel_delayed_work(&td->ulps_work);
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}
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static int taal_enter_ulps(struct omap_dss_device *dssdev)
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{
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struct taal_data *td = dev_get_drvdata(&dssdev->dev);
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struct nokia_dsi_panel_data *panel_data = get_panel_data(dssdev);
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int r;
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if (td->ulps_enabled)
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return 0;
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taal_cancel_ulps_work(dssdev);
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r = _taal_enable_te(dssdev, false);
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if (r)
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goto err;
|
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disable_irq(gpio_to_irq(panel_data->ext_te_gpio));
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omapdss_dsi_display_disable(dssdev, false, true);
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td->ulps_enabled = true;
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return 0;
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err:
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dev_err(&dssdev->dev, "enter ULPS failed");
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taal_panel_reset(dssdev);
|
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td->ulps_enabled = false;
|
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|
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taal_queue_ulps_work(dssdev);
|
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|
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return r;
|
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}
|
|
|
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static int taal_exit_ulps(struct omap_dss_device *dssdev)
|
|
{
|
|
struct taal_data *td = dev_get_drvdata(&dssdev->dev);
|
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struct nokia_dsi_panel_data *panel_data = get_panel_data(dssdev);
|
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int r;
|
|
|
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if (!td->ulps_enabled)
|
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return 0;
|
|
|
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r = omapdss_dsi_display_enable(dssdev);
|
|
if (r) {
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dev_err(&dssdev->dev, "failed to enable DSI\n");
|
|
goto err1;
|
|
}
|
|
|
|
omapdss_dsi_vc_enable_hs(dssdev, td->channel, true);
|
|
|
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r = _taal_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));
|
|
|
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taal_queue_ulps_work(dssdev);
|
|
|
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td->ulps_enabled = false;
|
|
|
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return 0;
|
|
|
|
err2:
|
|
dev_err(&dssdev->dev, "failed to exit ULPS");
|
|
|
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r = taal_panel_reset(dssdev);
|
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if (!r) {
|
|
enable_irq(gpio_to_irq(panel_data->ext_te_gpio));
|
|
td->ulps_enabled = false;
|
|
}
|
|
err1:
|
|
taal_queue_ulps_work(dssdev);
|
|
|
|
return r;
|
|
}
|
|
|
|
static int taal_wake_up(struct omap_dss_device *dssdev)
|
|
{
|
|
struct taal_data *td = dev_get_drvdata(&dssdev->dev);
|
|
|
|
if (td->ulps_enabled)
|
|
return taal_exit_ulps(dssdev);
|
|
|
|
taal_cancel_ulps_work(dssdev);
|
|
taal_queue_ulps_work(dssdev);
|
|
return 0;
|
|
}
|
|
|
|
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);
|
|
|
|
mutex_lock(&td->lock);
|
|
|
|
if (td->enabled) {
|
|
dsi_bus_lock(dssdev);
|
|
|
|
r = taal_wake_up(dssdev);
|
|
if (!r)
|
|
r = taal_dcs_write_1(td, DCS_BRIGHTNESS, level);
|
|
|
|
dsi_bus_unlock(dssdev);
|
|
} else {
|
|
r = 0;
|
|
}
|
|
|
|
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(dssdev);
|
|
|
|
r = taal_wake_up(dssdev);
|
|
if (!r)
|
|
r = taal_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 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(dssdev);
|
|
|
|
r = taal_wake_up(dssdev);
|
|
if (!r)
|
|
r = taal_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 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;
|
|
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 = taal_wake_up(dssdev);
|
|
if (r)
|
|
goto err;
|
|
|
|
r = taal_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 taal_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 taal_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);
|
|
taal_cancel_esd_work(dssdev);
|
|
td->esd_interval = t;
|
|
if (td->enabled)
|
|
taal_queue_esd_work(dssdev);
|
|
mutex_unlock(&td->lock);
|
|
|
|
return count;
|
|
}
|
|
|
|
static ssize_t taal_show_esd_interval(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);
|
|
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 taal_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 taal_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 = taal_enter_ulps(dssdev);
|
|
else
|
|
r = taal_wake_up(dssdev);
|
|
|
|
dsi_bus_unlock(dssdev);
|
|
}
|
|
|
|
mutex_unlock(&td->lock);
|
|
|
|
if (r)
|
|
return r;
|
|
|
|
return count;
|
|
}
|
|
|
|
static ssize_t taal_show_ulps(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);
|
|
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 taal_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 taal_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) {
|
|
/* taal_wake_up will restart the timer */
|
|
dsi_bus_lock(dssdev);
|
|
r = taal_wake_up(dssdev);
|
|
dsi_bus_unlock(dssdev);
|
|
}
|
|
|
|
mutex_unlock(&td->lock);
|
|
|
|
if (r)
|
|
return r;
|
|
|
|
return count;
|
|
}
|
|
|
|
static ssize_t taal_show_ulps_timeout(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);
|
|
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, 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 DEVICE_ATTR(esd_interval, S_IRUGO | S_IWUSR,
|
|
taal_show_esd_interval, taal_store_esd_interval);
|
|
static DEVICE_ATTR(ulps, S_IRUGO | S_IWUSR,
|
|
taal_show_ulps, taal_store_ulps);
|
|
static DEVICE_ATTR(ulps_timeout, S_IRUGO | S_IWUSR,
|
|
taal_show_ulps_timeout, taal_store_ulps_timeout);
|
|
|
|
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,
|
|
&dev_attr_esd_interval.attr,
|
|
&dev_attr_ulps.attr,
|
|
&dev_attr_ulps_timeout.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 = NULL;
|
|
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->panel.dsi_pix_fmt = OMAP_DSS_DSI_FMT_RGB888;
|
|
|
|
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("taal_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, taal_esd_work);
|
|
INIT_DELAYED_WORK(&td->ulps_work, taal_ulps_work);
|
|
|
|
dev_set_drvdata(&dssdev->dev, td);
|
|
|
|
taal_hw_reset(dssdev);
|
|
|
|
if (panel_data->use_dsi_backlight) {
|
|
memset(&props, 0, sizeof(struct backlight_properties));
|
|
props.max_brightness = 255;
|
|
|
|
props.type = BACKLIGHT_RAW;
|
|
bldev = backlight_device_register(dev_name(&dssdev->dev),
|
|
&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;
|
|
bldev->props.brightness = 255;
|
|
|
|
taal_bl_update_status(bldev);
|
|
}
|
|
|
|
if (panel_data->use_ext_te) {
|
|
int gpio = panel_data->ext_te_gpio;
|
|
|
|
r = gpio_request_one(gpio, GPIOF_IN, "taal irq");
|
|
if (r) {
|
|
dev_err(&dssdev->dev, "GPIO request failed\n");
|
|
goto err_gpio;
|
|
}
|
|
|
|
r = request_irq(gpio_to_irq(gpio), taal_te_isr,
|
|
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 = 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, &taal_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:
|
|
if (bldev != NULL)
|
|
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 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);
|
|
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;
|
|
if (bldev != NULL) {
|
|
bldev->props.power = FB_BLANK_POWERDOWN;
|
|
taal_bl_update_status(bldev);
|
|
backlight_device_unregister(bldev);
|
|
}
|
|
|
|
taal_cancel_ulps_work(dssdev);
|
|
taal_cancel_esd_work(dssdev);
|
|
destroy_workqueue(td->workqueue);
|
|
|
|
/* 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(dssdev, td->channel, false);
|
|
|
|
r = taal_sleep_out(td);
|
|
if (r)
|
|
goto err;
|
|
|
|
r = taal_get_id(td, &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(td, DCS_BRIGHTNESS, 0xff);
|
|
if (r)
|
|
goto err;
|
|
|
|
r = taal_dcs_write_1(td, DCS_CTRL_DISPLAY,
|
|
(1<<2) | (1<<5)); /* BL | BCTRL */
|
|
if (r)
|
|
goto err;
|
|
|
|
r = taal_dcs_write_1(td, MIPI_DCS_SET_PIXEL_FORMAT,
|
|
MIPI_DCS_PIXEL_FMT_24BIT);
|
|
if (r)
|
|
goto err;
|
|
|
|
r = taal_set_addr_mode(td, td->rotate, td->mirror);
|
|
if (r)
|
|
goto err;
|
|
|
|
if (!td->cabc_broken) {
|
|
r = taal_dcs_write_1(td, DCS_WRITE_CABC, td->cabc_mode);
|
|
if (r)
|
|
goto err;
|
|
}
|
|
|
|
r = taal_dcs_write_0(td, MIPI_DCS_SET_DISPLAY_ON);
|
|
if (r)
|
|
goto err;
|
|
|
|
r = _taal_enable_te(dssdev, td->te_enabled);
|
|
if (r)
|
|
goto err;
|
|
|
|
r = dsi_enable_video_output(dssdev, td->channel);
|
|
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(dssdev, td->channel, 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, true, false);
|
|
err0:
|
|
return r;
|
|
}
|
|
|
|
static void taal_power_off(struct omap_dss_device *dssdev)
|
|
{
|
|
struct taal_data *td = dev_get_drvdata(&dssdev->dev);
|
|
int r;
|
|
|
|
dsi_disable_video_output(dssdev, td->channel);
|
|
|
|
r = taal_dcs_write_0(td, MIPI_DCS_SET_DISPLAY_OFF);
|
|
if (!r)
|
|
r = taal_sleep_in(td);
|
|
|
|
if (r) {
|
|
dev_err(&dssdev->dev,
|
|
"error disabling panel, issuing HW reset\n");
|
|
taal_hw_reset(dssdev);
|
|
}
|
|
|
|
omapdss_dsi_display_disable(dssdev, true, false);
|
|
|
|
td->enabled = 0;
|
|
}
|
|
|
|
static int taal_panel_reset(struct omap_dss_device *dssdev)
|
|
{
|
|
dev_err(&dssdev->dev, "performing LCD reset\n");
|
|
|
|
taal_power_off(dssdev);
|
|
taal_hw_reset(dssdev);
|
|
return taal_power_on(dssdev);
|
|
}
|
|
|
|
static int taal_enable(struct omap_dss_device *dssdev)
|
|
{
|
|
struct taal_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 = taal_power_on(dssdev);
|
|
|
|
dsi_bus_unlock(dssdev);
|
|
|
|
if (r)
|
|
goto err;
|
|
|
|
taal_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 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);
|
|
|
|
taal_cancel_ulps_work(dssdev);
|
|
taal_cancel_esd_work(dssdev);
|
|
|
|
dsi_bus_lock(dssdev);
|
|
|
|
if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE) {
|
|
int r;
|
|
|
|
r = taal_wake_up(dssdev);
|
|
if (!r)
|
|
taal_power_off(dssdev);
|
|
}
|
|
|
|
dsi_bus_unlock(dssdev);
|
|
|
|
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;
|
|
}
|
|
|
|
taal_cancel_ulps_work(dssdev);
|
|
taal_cancel_esd_work(dssdev);
|
|
|
|
dsi_bus_lock(dssdev);
|
|
|
|
r = taal_wake_up(dssdev);
|
|
if (!r)
|
|
taal_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 taal_resume(struct omap_dss_device *dssdev)
|
|
{
|
|
struct taal_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 = taal_power_on(dssdev);
|
|
|
|
dsi_bus_unlock(dssdev);
|
|
|
|
if (r) {
|
|
dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
|
|
} else {
|
|
dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
|
|
taal_queue_esd_work(dssdev);
|
|
}
|
|
|
|
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(dssdev);
|
|
}
|
|
|
|
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, td->channel, taal_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 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(dssdev);
|
|
}
|
|
|
|
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(dssdev);
|
|
|
|
r = taal_wake_up(dssdev);
|
|
if (r)
|
|
goto err;
|
|
|
|
if (!td->enabled) {
|
|
r = 0;
|
|
goto err;
|
|
}
|
|
|
|
/* XXX no need to send this every frame, but dsi break if not done */
|
|
r = taal_set_update_window(td, 0, 0,
|
|
td->panel_config->timings.x_res,
|
|
td->panel_config->timings.y_res);
|
|
if (r)
|
|
goto err;
|
|
|
|
if (td->te_enabled && panel_data->use_ext_te) {
|
|
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, 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(dssdev);
|
|
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(dssdev);
|
|
dsi_bus_unlock(dssdev);
|
|
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(td, MIPI_DCS_SET_TEAR_ON, 0);
|
|
else
|
|
r = taal_dcs_write_0(td, MIPI_DCS_SET_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(dssdev);
|
|
|
|
if (td->enabled) {
|
|
r = taal_wake_up(dssdev);
|
|
if (r)
|
|
goto err;
|
|
|
|
r = _taal_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 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(dssdev);
|
|
|
|
if (td->enabled) {
|
|
r = taal_wake_up(dssdev);
|
|
if (r)
|
|
goto err;
|
|
|
|
r = taal_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 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(dssdev);
|
|
if (td->enabled) {
|
|
r = taal_wake_up(dssdev);
|
|
if (r)
|
|
goto err;
|
|
|
|
r = taal_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 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(dssdev);
|
|
|
|
r = taal_wake_up(dssdev);
|
|
if (r)
|
|
goto err2;
|
|
|
|
r = taal_dcs_read_1(td, DCS_GET_ID1, &id1);
|
|
if (r)
|
|
goto err2;
|
|
r = taal_dcs_read_1(td, DCS_GET_ID2, &id2);
|
|
if (r)
|
|
goto err2;
|
|
r = taal_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 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(dssdev);
|
|
|
|
r = taal_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;
|
|
|
|
taal_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 taal_ulps_work(struct work_struct *work)
|
|
{
|
|
struct taal_data *td = container_of(work, struct taal_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);
|
|
|
|
taal_enter_ulps(dssdev);
|
|
|
|
dsi_bus_unlock(dssdev);
|
|
mutex_unlock(&td->lock);
|
|
}
|
|
|
|
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(dssdev);
|
|
|
|
r = taal_wake_up(dssdev);
|
|
if (r) {
|
|
dev_err(&dssdev->dev, "failed to exit ULPS\n");
|
|
goto err;
|
|
}
|
|
|
|
r = taal_dcs_read_1(td, MIPI_DCS_GET_DIAGNOSTIC_RESULT, &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(td, MIPI_DCS_GET_DIAGNOSTIC_RESULT, &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(td, MIPI_DCS_SET_TEAR_ON, 0);
|
|
if (r)
|
|
goto err;
|
|
}
|
|
|
|
dsi_bus_unlock(dssdev);
|
|
|
|
taal_queue_esd_work(dssdev);
|
|
|
|
mutex_unlock(&td->lock);
|
|
return;
|
|
err:
|
|
dev_err(&dssdev->dev, "performing LCD reset\n");
|
|
|
|
taal_panel_reset(dssdev);
|
|
|
|
dsi_bus_unlock(dssdev);
|
|
|
|
taal_queue_esd_work(dssdev);
|
|
|
|
mutex_unlock(&td->lock);
|
|
}
|
|
|
|
static struct omap_dss_driver taal_driver = {
|
|
.probe = taal_probe,
|
|
.remove = __exit_p(taal_remove),
|
|
|
|
.enable = taal_enable,
|
|
.disable = taal_disable,
|
|
.suspend = taal_suspend,
|
|
.resume = taal_resume,
|
|
|
|
.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");
|