| /* |
| * Sony ACX565AKM LCD Panel driver |
| * |
| * Copyright (C) 2010 Nokia Corporation |
| * |
| * Original Driver Author: Imre Deak <imre.deak@nokia.com> |
| * Based on panel-generic.c by Tomi Valkeinen <tomi.valkeinen@nokia.com> |
| * Adapted to new DSS2 framework: Roger Quadros <roger.quadros@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/>. |
| */ |
| |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| #include <linux/platform_device.h> |
| #include <linux/delay.h> |
| #include <linux/spi/spi.h> |
| #include <linux/jiffies.h> |
| #include <linux/sched.h> |
| #include <linux/backlight.h> |
| #include <linux/fb.h> |
| #include <linux/gpio/consumer.h> |
| #include <linux/of.h> |
| #include <linux/of_gpio.h> |
| |
| #include <video/omapdss.h> |
| #include <video/omap-panel-data.h> |
| |
| #define MIPID_CMD_READ_DISP_ID 0x04 |
| #define MIPID_CMD_READ_RED 0x06 |
| #define MIPID_CMD_READ_GREEN 0x07 |
| #define MIPID_CMD_READ_BLUE 0x08 |
| #define MIPID_CMD_READ_DISP_STATUS 0x09 |
| #define MIPID_CMD_RDDSDR 0x0F |
| #define MIPID_CMD_SLEEP_IN 0x10 |
| #define MIPID_CMD_SLEEP_OUT 0x11 |
| #define MIPID_CMD_DISP_OFF 0x28 |
| #define MIPID_CMD_DISP_ON 0x29 |
| #define MIPID_CMD_WRITE_DISP_BRIGHTNESS 0x51 |
| #define MIPID_CMD_READ_DISP_BRIGHTNESS 0x52 |
| #define MIPID_CMD_WRITE_CTRL_DISP 0x53 |
| |
| #define CTRL_DISP_BRIGHTNESS_CTRL_ON (1 << 5) |
| #define CTRL_DISP_AMBIENT_LIGHT_CTRL_ON (1 << 4) |
| #define CTRL_DISP_BACKLIGHT_ON (1 << 2) |
| #define CTRL_DISP_AUTO_BRIGHTNESS_ON (1 << 1) |
| |
| #define MIPID_CMD_READ_CTRL_DISP 0x54 |
| #define MIPID_CMD_WRITE_CABC 0x55 |
| #define MIPID_CMD_READ_CABC 0x56 |
| |
| #define MIPID_VER_LPH8923 3 |
| #define MIPID_VER_LS041Y3 4 |
| #define MIPID_VER_L4F00311 8 |
| #define MIPID_VER_ACX565AKM 9 |
| |
| struct panel_drv_data { |
| struct omap_dss_device dssdev; |
| struct omap_dss_device *in; |
| |
| int reset_gpio; |
| int datapairs; |
| |
| struct omap_video_timings videomode; |
| |
| char *name; |
| int enabled; |
| int model; |
| int revision; |
| u8 display_id[3]; |
| unsigned has_bc:1; |
| unsigned has_cabc:1; |
| unsigned cabc_mode; |
| 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 spi_device *spi; |
| struct mutex mutex; |
| |
| struct backlight_device *bl_dev; |
| }; |
| |
| static const struct omap_video_timings acx565akm_panel_timings = { |
| .x_res = 800, |
| .y_res = 480, |
| .pixelclock = 24000000, |
| .hfp = 28, |
| .hsw = 4, |
| .hbp = 24, |
| .vfp = 3, |
| .vsw = 3, |
| .vbp = 4, |
| |
| .vsync_level = OMAPDSS_SIG_ACTIVE_LOW, |
| .hsync_level = OMAPDSS_SIG_ACTIVE_LOW, |
| |
| .data_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE, |
| .de_level = OMAPDSS_SIG_ACTIVE_HIGH, |
| .sync_pclk_edge = OMAPDSS_DRIVE_SIG_FALLING_EDGE, |
| }; |
| |
| #define to_panel_data(p) container_of(p, struct panel_drv_data, dssdev) |
| |
| static void acx565akm_transfer(struct panel_drv_data *ddata, int cmd, |
| const u8 *wbuf, int wlen, u8 *rbuf, int rlen) |
| { |
| struct spi_message m; |
| struct spi_transfer *x, xfer[5]; |
| int r; |
| |
| BUG_ON(ddata->spi == NULL); |
| |
| spi_message_init(&m); |
| |
| memset(xfer, 0, sizeof(xfer)); |
| x = &xfer[0]; |
| |
| cmd &= 0xff; |
| x->tx_buf = &cmd; |
| x->bits_per_word = 9; |
| x->len = 2; |
| |
| if (rlen > 1 && wlen == 0) { |
| /* |
| * Between the command and the response data there is a |
| * dummy clock cycle. Add an extra bit after the command |
| * word to account for this. |
| */ |
| x->bits_per_word = 10; |
| cmd <<= 1; |
| } |
| spi_message_add_tail(x, &m); |
| |
| if (wlen) { |
| x++; |
| x->tx_buf = wbuf; |
| x->len = wlen; |
| x->bits_per_word = 9; |
| spi_message_add_tail(x, &m); |
| } |
| |
| if (rlen) { |
| x++; |
| x->rx_buf = rbuf; |
| x->len = rlen; |
| spi_message_add_tail(x, &m); |
| } |
| |
| r = spi_sync(ddata->spi, &m); |
| if (r < 0) |
| dev_dbg(&ddata->spi->dev, "spi_sync %d\n", r); |
| } |
| |
| static inline void acx565akm_cmd(struct panel_drv_data *ddata, int cmd) |
| { |
| acx565akm_transfer(ddata, cmd, NULL, 0, NULL, 0); |
| } |
| |
| static inline void acx565akm_write(struct panel_drv_data *ddata, |
| int reg, const u8 *buf, int len) |
| { |
| acx565akm_transfer(ddata, reg, buf, len, NULL, 0); |
| } |
| |
| static inline void acx565akm_read(struct panel_drv_data *ddata, |
| int reg, u8 *buf, int len) |
| { |
| acx565akm_transfer(ddata, reg, NULL, 0, buf, len); |
| } |
| |
| static void hw_guard_start(struct panel_drv_data *ddata, int guard_msec) |
| { |
| ddata->hw_guard_wait = msecs_to_jiffies(guard_msec); |
| ddata->hw_guard_end = jiffies + ddata->hw_guard_wait; |
| } |
| |
| static void hw_guard_wait(struct panel_drv_data *ddata) |
| { |
| unsigned long wait = ddata->hw_guard_end - jiffies; |
| |
| if ((long)wait > 0 && wait <= ddata->hw_guard_wait) { |
| set_current_state(TASK_UNINTERRUPTIBLE); |
| schedule_timeout(wait); |
| } |
| } |
| |
| static void set_sleep_mode(struct panel_drv_data *ddata, int on) |
| { |
| int cmd; |
| |
| if (on) |
| cmd = MIPID_CMD_SLEEP_IN; |
| else |
| cmd = MIPID_CMD_SLEEP_OUT; |
| /* |
| * We have to keep 120msec between sleep in/out commands. |
| * (8.2.15, 8.2.16). |
| */ |
| hw_guard_wait(ddata); |
| acx565akm_cmd(ddata, cmd); |
| hw_guard_start(ddata, 120); |
| } |
| |
| static void set_display_state(struct panel_drv_data *ddata, int enabled) |
| { |
| int cmd = enabled ? MIPID_CMD_DISP_ON : MIPID_CMD_DISP_OFF; |
| |
| acx565akm_cmd(ddata, cmd); |
| } |
| |
| static int panel_enabled(struct panel_drv_data *ddata) |
| { |
| u32 disp_status; |
| int enabled; |
| |
| acx565akm_read(ddata, MIPID_CMD_READ_DISP_STATUS, |
| (u8 *)&disp_status, 4); |
| disp_status = __be32_to_cpu(disp_status); |
| enabled = (disp_status & (1 << 17)) && (disp_status & (1 << 10)); |
| dev_dbg(&ddata->spi->dev, |
| "LCD panel %senabled by bootloader (status 0x%04x)\n", |
| enabled ? "" : "not ", disp_status); |
| return enabled; |
| } |
| |
| static int panel_detect(struct panel_drv_data *ddata) |
| { |
| acx565akm_read(ddata, MIPID_CMD_READ_DISP_ID, ddata->display_id, 3); |
| dev_dbg(&ddata->spi->dev, "MIPI display ID: %02x%02x%02x\n", |
| ddata->display_id[0], |
| ddata->display_id[1], |
| ddata->display_id[2]); |
| |
| switch (ddata->display_id[0]) { |
| case 0x10: |
| ddata->model = MIPID_VER_ACX565AKM; |
| ddata->name = "acx565akm"; |
| ddata->has_bc = 1; |
| ddata->has_cabc = 1; |
| break; |
| case 0x29: |
| ddata->model = MIPID_VER_L4F00311; |
| ddata->name = "l4f00311"; |
| break; |
| case 0x45: |
| ddata->model = MIPID_VER_LPH8923; |
| ddata->name = "lph8923"; |
| break; |
| case 0x83: |
| ddata->model = MIPID_VER_LS041Y3; |
| ddata->name = "ls041y3"; |
| break; |
| default: |
| ddata->name = "unknown"; |
| dev_err(&ddata->spi->dev, "invalid display ID\n"); |
| return -ENODEV; |
| } |
| |
| ddata->revision = ddata->display_id[1]; |
| |
| dev_info(&ddata->spi->dev, "omapfb: %s rev %02x LCD detected\n", |
| ddata->name, ddata->revision); |
| |
| return 0; |
| } |
| |
| /*----------------------Backlight Control-------------------------*/ |
| |
| static void enable_backlight_ctrl(struct panel_drv_data *ddata, int enable) |
| { |
| u16 ctrl; |
| |
| acx565akm_read(ddata, MIPID_CMD_READ_CTRL_DISP, (u8 *)&ctrl, 1); |
| if (enable) { |
| ctrl |= CTRL_DISP_BRIGHTNESS_CTRL_ON | |
| CTRL_DISP_BACKLIGHT_ON; |
| } else { |
| ctrl &= ~(CTRL_DISP_BRIGHTNESS_CTRL_ON | |
| CTRL_DISP_BACKLIGHT_ON); |
| } |
| |
| ctrl |= 1 << 8; |
| acx565akm_write(ddata, MIPID_CMD_WRITE_CTRL_DISP, (u8 *)&ctrl, 2); |
| } |
| |
| static void set_cabc_mode(struct panel_drv_data *ddata, unsigned mode) |
| { |
| u16 cabc_ctrl; |
| |
| ddata->cabc_mode = mode; |
| if (!ddata->enabled) |
| return; |
| cabc_ctrl = 0; |
| acx565akm_read(ddata, MIPID_CMD_READ_CABC, (u8 *)&cabc_ctrl, 1); |
| cabc_ctrl &= ~3; |
| cabc_ctrl |= (1 << 8) | (mode & 3); |
| acx565akm_write(ddata, MIPID_CMD_WRITE_CABC, (u8 *)&cabc_ctrl, 2); |
| } |
| |
| static unsigned get_cabc_mode(struct panel_drv_data *ddata) |
| { |
| return ddata->cabc_mode; |
| } |
| |
| static unsigned get_hw_cabc_mode(struct panel_drv_data *ddata) |
| { |
| u8 cabc_ctrl; |
| |
| acx565akm_read(ddata, MIPID_CMD_READ_CABC, &cabc_ctrl, 1); |
| return cabc_ctrl & 3; |
| } |
| |
| static void acx565akm_set_brightness(struct panel_drv_data *ddata, int level) |
| { |
| int bv; |
| |
| bv = level | (1 << 8); |
| acx565akm_write(ddata, MIPID_CMD_WRITE_DISP_BRIGHTNESS, (u8 *)&bv, 2); |
| |
| if (level) |
| enable_backlight_ctrl(ddata, 1); |
| else |
| enable_backlight_ctrl(ddata, 0); |
| } |
| |
| static int acx565akm_get_actual_brightness(struct panel_drv_data *ddata) |
| { |
| u8 bv; |
| |
| acx565akm_read(ddata, MIPID_CMD_READ_DISP_BRIGHTNESS, &bv, 1); |
| |
| return bv; |
| } |
| |
| |
| static int acx565akm_bl_update_status(struct backlight_device *dev) |
| { |
| struct panel_drv_data *ddata = dev_get_drvdata(&dev->dev); |
| int level; |
| |
| dev_dbg(&ddata->spi->dev, "%s\n", __func__); |
| |
| if (dev->props.fb_blank == FB_BLANK_UNBLANK && |
| dev->props.power == FB_BLANK_UNBLANK) |
| level = dev->props.brightness; |
| else |
| level = 0; |
| |
| if (ddata->has_bc) |
| acx565akm_set_brightness(ddata, level); |
| else |
| return -ENODEV; |
| |
| return 0; |
| } |
| |
| static int acx565akm_bl_get_intensity(struct backlight_device *dev) |
| { |
| struct panel_drv_data *ddata = dev_get_drvdata(&dev->dev); |
| |
| dev_dbg(&dev->dev, "%s\n", __func__); |
| |
| if (!ddata->has_bc) |
| return -ENODEV; |
| |
| if (dev->props.fb_blank == FB_BLANK_UNBLANK && |
| dev->props.power == FB_BLANK_UNBLANK) { |
| if (ddata->has_bc) |
| return acx565akm_get_actual_brightness(ddata); |
| else |
| return dev->props.brightness; |
| } |
| |
| return 0; |
| } |
| |
| static int acx565akm_bl_update_status_locked(struct backlight_device *dev) |
| { |
| struct panel_drv_data *ddata = dev_get_drvdata(&dev->dev); |
| int r; |
| |
| mutex_lock(&ddata->mutex); |
| r = acx565akm_bl_update_status(dev); |
| mutex_unlock(&ddata->mutex); |
| |
| return r; |
| } |
| |
| static int acx565akm_bl_get_intensity_locked(struct backlight_device *dev) |
| { |
| struct panel_drv_data *ddata = dev_get_drvdata(&dev->dev); |
| int r; |
| |
| mutex_lock(&ddata->mutex); |
| r = acx565akm_bl_get_intensity(dev); |
| mutex_unlock(&ddata->mutex); |
| |
| return r; |
| } |
| |
| static const struct backlight_ops acx565akm_bl_ops = { |
| .get_brightness = acx565akm_bl_get_intensity_locked, |
| .update_status = acx565akm_bl_update_status_locked, |
| }; |
| |
| /*--------------------Auto Brightness control via Sysfs---------------------*/ |
| |
| static const char * const cabc_modes[] = { |
| "off", /* always used 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 panel_drv_data *ddata = dev_get_drvdata(dev); |
| const char *mode_str; |
| int mode; |
| int len; |
| |
| if (!ddata->has_cabc) |
| mode = 0; |
| else |
| mode = get_cabc_mode(ddata); |
| 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 panel_drv_data *ddata = dev_get_drvdata(dev); |
| int i; |
| |
| for (i = 0; i < ARRAY_SIZE(cabc_modes); i++) { |
| const char *mode_str = cabc_modes[i]; |
| int cmp_len = strlen(mode_str); |
| |
| if (count > 0 && buf[count - 1] == '\n') |
| count--; |
| if (count != cmp_len) |
| continue; |
| |
| if (strncmp(buf, mode_str, cmp_len) == 0) |
| break; |
| } |
| |
| if (i == ARRAY_SIZE(cabc_modes)) |
| return -EINVAL; |
| |
| if (!ddata->has_cabc && i != 0) |
| return -EINVAL; |
| |
| mutex_lock(&ddata->mutex); |
| set_cabc_mode(ddata, i); |
| mutex_unlock(&ddata->mutex); |
| |
| return count; |
| } |
| |
| static ssize_t show_cabc_available_modes(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| struct panel_drv_data *ddata = dev_get_drvdata(dev); |
| int len; |
| int i; |
| |
| if (!ddata->has_cabc) |
| return snprintf(buf, PAGE_SIZE, "%s\n", cabc_modes[0]); |
| |
| for (i = 0, len = 0; |
| len < PAGE_SIZE && i < ARRAY_SIZE(cabc_modes); i++) |
| len += snprintf(&buf[len], PAGE_SIZE - len, "%s%s%s", |
| i ? " " : "", cabc_modes[i], |
| i == ARRAY_SIZE(cabc_modes) - 1 ? "\n" : ""); |
| |
| return len < PAGE_SIZE ? len : PAGE_SIZE - 1; |
| } |
| |
| static DEVICE_ATTR(cabc_mode, S_IRUGO | S_IWUSR, |
| show_cabc_mode, store_cabc_mode); |
| static DEVICE_ATTR(cabc_available_modes, S_IRUGO, |
| show_cabc_available_modes, NULL); |
| |
| static struct attribute *bldev_attrs[] = { |
| &dev_attr_cabc_mode.attr, |
| &dev_attr_cabc_available_modes.attr, |
| NULL, |
| }; |
| |
| static struct attribute_group bldev_attr_group = { |
| .attrs = bldev_attrs, |
| }; |
| |
| static int acx565akm_connect(struct omap_dss_device *dssdev) |
| { |
| struct panel_drv_data *ddata = to_panel_data(dssdev); |
| struct omap_dss_device *in = ddata->in; |
| int r; |
| |
| if (omapdss_device_is_connected(dssdev)) |
| return 0; |
| |
| r = in->ops.sdi->connect(in, dssdev); |
| if (r) |
| return r; |
| |
| return 0; |
| } |
| |
| static void acx565akm_disconnect(struct omap_dss_device *dssdev) |
| { |
| struct panel_drv_data *ddata = to_panel_data(dssdev); |
| struct omap_dss_device *in = ddata->in; |
| |
| if (!omapdss_device_is_connected(dssdev)) |
| return; |
| |
| in->ops.sdi->disconnect(in, dssdev); |
| } |
| |
| static int acx565akm_panel_power_on(struct omap_dss_device *dssdev) |
| { |
| struct panel_drv_data *ddata = to_panel_data(dssdev); |
| struct omap_dss_device *in = ddata->in; |
| int r; |
| |
| dev_dbg(&ddata->spi->dev, "%s\n", __func__); |
| |
| in->ops.sdi->set_timings(in, &ddata->videomode); |
| |
| if (ddata->datapairs > 0) |
| in->ops.sdi->set_datapairs(in, ddata->datapairs); |
| |
| r = in->ops.sdi->enable(in); |
| if (r) { |
| pr_err("%s sdi enable failed\n", __func__); |
| return r; |
| } |
| |
| /*FIXME tweak me */ |
| msleep(50); |
| |
| if (gpio_is_valid(ddata->reset_gpio)) |
| gpio_set_value(ddata->reset_gpio, 1); |
| |
| if (ddata->enabled) { |
| dev_dbg(&ddata->spi->dev, "panel already enabled\n"); |
| return 0; |
| } |
| |
| /* |
| * We have to meet all the following delay requirements: |
| * 1. tRW: reset pulse width 10usec (7.12.1) |
| * 2. tRT: reset cancel time 5msec (7.12.1) |
| * 3. Providing PCLK,HS,VS signals for 2 frames = ~50msec worst |
| * case (7.6.2) |
| * 4. 120msec before the sleep out command (7.12.1) |
| */ |
| msleep(120); |
| |
| set_sleep_mode(ddata, 0); |
| ddata->enabled = 1; |
| |
| /* 5msec between sleep out and the next command. (8.2.16) */ |
| usleep_range(5000, 10000); |
| set_display_state(ddata, 1); |
| set_cabc_mode(ddata, ddata->cabc_mode); |
| |
| return acx565akm_bl_update_status(ddata->bl_dev); |
| } |
| |
| static void acx565akm_panel_power_off(struct omap_dss_device *dssdev) |
| { |
| struct panel_drv_data *ddata = to_panel_data(dssdev); |
| struct omap_dss_device *in = ddata->in; |
| |
| dev_dbg(dssdev->dev, "%s\n", __func__); |
| |
| if (!ddata->enabled) |
| return; |
| |
| set_display_state(ddata, 0); |
| set_sleep_mode(ddata, 1); |
| ddata->enabled = 0; |
| /* |
| * We have to provide PCLK,HS,VS signals for 2 frames (worst case |
| * ~50msec) after sending the sleep in command and asserting the |
| * reset signal. We probably could assert the reset w/o the delay |
| * but we still delay to avoid possible artifacts. (7.6.1) |
| */ |
| msleep(50); |
| |
| if (gpio_is_valid(ddata->reset_gpio)) |
| gpio_set_value(ddata->reset_gpio, 0); |
| |
| /* FIXME need to tweak this delay */ |
| msleep(100); |
| |
| in->ops.sdi->disable(in); |
| } |
| |
| static int acx565akm_enable(struct omap_dss_device *dssdev) |
| { |
| struct panel_drv_data *ddata = to_panel_data(dssdev); |
| int r; |
| |
| dev_dbg(dssdev->dev, "%s\n", __func__); |
| |
| if (!omapdss_device_is_connected(dssdev)) |
| return -ENODEV; |
| |
| if (omapdss_device_is_enabled(dssdev)) |
| return 0; |
| |
| mutex_lock(&ddata->mutex); |
| r = acx565akm_panel_power_on(dssdev); |
| mutex_unlock(&ddata->mutex); |
| if (r) |
| return r; |
| |
| dssdev->state = OMAP_DSS_DISPLAY_ACTIVE; |
| |
| return 0; |
| } |
| |
| static void acx565akm_disable(struct omap_dss_device *dssdev) |
| { |
| struct panel_drv_data *ddata = to_panel_data(dssdev); |
| |
| dev_dbg(dssdev->dev, "%s\n", __func__); |
| |
| if (!omapdss_device_is_enabled(dssdev)) |
| return; |
| |
| mutex_lock(&ddata->mutex); |
| acx565akm_panel_power_off(dssdev); |
| mutex_unlock(&ddata->mutex); |
| |
| dssdev->state = OMAP_DSS_DISPLAY_DISABLED; |
| } |
| |
| static void acx565akm_set_timings(struct omap_dss_device *dssdev, |
| struct omap_video_timings *timings) |
| { |
| struct panel_drv_data *ddata = to_panel_data(dssdev); |
| struct omap_dss_device *in = ddata->in; |
| |
| ddata->videomode = *timings; |
| dssdev->panel.timings = *timings; |
| |
| in->ops.sdi->set_timings(in, timings); |
| } |
| |
| static void acx565akm_get_timings(struct omap_dss_device *dssdev, |
| struct omap_video_timings *timings) |
| { |
| struct panel_drv_data *ddata = to_panel_data(dssdev); |
| |
| *timings = ddata->videomode; |
| } |
| |
| static int acx565akm_check_timings(struct omap_dss_device *dssdev, |
| struct omap_video_timings *timings) |
| { |
| struct panel_drv_data *ddata = to_panel_data(dssdev); |
| struct omap_dss_device *in = ddata->in; |
| |
| return in->ops.sdi->check_timings(in, timings); |
| } |
| |
| static struct omap_dss_driver acx565akm_ops = { |
| .connect = acx565akm_connect, |
| .disconnect = acx565akm_disconnect, |
| |
| .enable = acx565akm_enable, |
| .disable = acx565akm_disable, |
| |
| .set_timings = acx565akm_set_timings, |
| .get_timings = acx565akm_get_timings, |
| .check_timings = acx565akm_check_timings, |
| |
| .get_resolution = omapdss_default_get_resolution, |
| }; |
| |
| static int acx565akm_probe_pdata(struct spi_device *spi) |
| { |
| const struct panel_acx565akm_platform_data *pdata; |
| struct panel_drv_data *ddata = dev_get_drvdata(&spi->dev); |
| struct omap_dss_device *dssdev, *in; |
| |
| pdata = dev_get_platdata(&spi->dev); |
| |
| ddata->reset_gpio = pdata->reset_gpio; |
| |
| in = omap_dss_find_output(pdata->source); |
| if (in == NULL) { |
| dev_err(&spi->dev, "failed to find video source '%s'\n", |
| pdata->source); |
| return -EPROBE_DEFER; |
| } |
| ddata->in = in; |
| |
| ddata->datapairs = pdata->datapairs; |
| |
| dssdev = &ddata->dssdev; |
| dssdev->name = pdata->name; |
| |
| return 0; |
| } |
| |
| static int acx565akm_probe_of(struct spi_device *spi) |
| { |
| struct panel_drv_data *ddata = dev_get_drvdata(&spi->dev); |
| struct device_node *np = spi->dev.of_node; |
| |
| ddata->reset_gpio = of_get_named_gpio(np, "reset-gpios", 0); |
| |
| ddata->in = omapdss_of_find_source_for_first_ep(np); |
| if (IS_ERR(ddata->in)) { |
| dev_err(&spi->dev, "failed to find video source\n"); |
| return PTR_ERR(ddata->in); |
| } |
| |
| return 0; |
| } |
| |
| static int acx565akm_probe(struct spi_device *spi) |
| { |
| struct panel_drv_data *ddata; |
| struct omap_dss_device *dssdev; |
| struct backlight_device *bldev; |
| int max_brightness, brightness; |
| struct backlight_properties props; |
| int r; |
| |
| dev_dbg(&spi->dev, "%s\n", __func__); |
| |
| spi->mode = SPI_MODE_3; |
| |
| ddata = devm_kzalloc(&spi->dev, sizeof(*ddata), GFP_KERNEL); |
| if (ddata == NULL) |
| return -ENOMEM; |
| |
| dev_set_drvdata(&spi->dev, ddata); |
| |
| ddata->spi = spi; |
| |
| mutex_init(&ddata->mutex); |
| |
| if (dev_get_platdata(&spi->dev)) { |
| r = acx565akm_probe_pdata(spi); |
| if (r) |
| return r; |
| } else if (spi->dev.of_node) { |
| r = acx565akm_probe_of(spi); |
| if (r) |
| return r; |
| } else { |
| dev_err(&spi->dev, "platform data missing!\n"); |
| return -ENODEV; |
| } |
| |
| if (gpio_is_valid(ddata->reset_gpio)) { |
| r = devm_gpio_request_one(&spi->dev, ddata->reset_gpio, |
| GPIOF_OUT_INIT_LOW, "lcd reset"); |
| if (r) |
| goto err_gpio; |
| } |
| |
| if (gpio_is_valid(ddata->reset_gpio)) |
| gpio_set_value(ddata->reset_gpio, 1); |
| |
| /* |
| * After reset we have to wait 5 msec before the first |
| * command can be sent. |
| */ |
| usleep_range(5000, 10000); |
| |
| ddata->enabled = panel_enabled(ddata); |
| |
| r = panel_detect(ddata); |
| |
| if (!ddata->enabled && gpio_is_valid(ddata->reset_gpio)) |
| gpio_set_value(ddata->reset_gpio, 0); |
| |
| if (r) { |
| dev_err(&spi->dev, "%s panel detect error\n", __func__); |
| goto err_detect; |
| } |
| |
| memset(&props, 0, sizeof(props)); |
| props.fb_blank = FB_BLANK_UNBLANK; |
| props.power = FB_BLANK_UNBLANK; |
| props.type = BACKLIGHT_RAW; |
| |
| bldev = backlight_device_register("acx565akm", &ddata->spi->dev, |
| ddata, &acx565akm_bl_ops, &props); |
| if (IS_ERR(bldev)) { |
| r = PTR_ERR(bldev); |
| goto err_reg_bl; |
| } |
| ddata->bl_dev = bldev; |
| if (ddata->has_cabc) { |
| r = sysfs_create_group(&bldev->dev.kobj, &bldev_attr_group); |
| if (r) { |
| dev_err(&bldev->dev, |
| "%s failed to create sysfs files\n", __func__); |
| goto err_sysfs; |
| } |
| ddata->cabc_mode = get_hw_cabc_mode(ddata); |
| } |
| |
| max_brightness = 255; |
| |
| if (ddata->has_bc) |
| brightness = acx565akm_get_actual_brightness(ddata); |
| else |
| brightness = 0; |
| |
| bldev->props.max_brightness = max_brightness; |
| bldev->props.brightness = brightness; |
| |
| acx565akm_bl_update_status(bldev); |
| |
| |
| ddata->videomode = acx565akm_panel_timings; |
| |
| dssdev = &ddata->dssdev; |
| dssdev->dev = &spi->dev; |
| dssdev->driver = &acx565akm_ops; |
| dssdev->type = OMAP_DISPLAY_TYPE_SDI; |
| dssdev->owner = THIS_MODULE; |
| dssdev->panel.timings = ddata->videomode; |
| |
| r = omapdss_register_display(dssdev); |
| if (r) { |
| dev_err(&spi->dev, "Failed to register panel\n"); |
| goto err_reg; |
| } |
| |
| return 0; |
| |
| err_reg: |
| sysfs_remove_group(&bldev->dev.kobj, &bldev_attr_group); |
| err_sysfs: |
| backlight_device_unregister(bldev); |
| err_reg_bl: |
| err_detect: |
| err_gpio: |
| omap_dss_put_device(ddata->in); |
| return r; |
| } |
| |
| static int acx565akm_remove(struct spi_device *spi) |
| { |
| struct panel_drv_data *ddata = dev_get_drvdata(&spi->dev); |
| struct omap_dss_device *dssdev = &ddata->dssdev; |
| struct omap_dss_device *in = ddata->in; |
| |
| dev_dbg(&ddata->spi->dev, "%s\n", __func__); |
| |
| sysfs_remove_group(&ddata->bl_dev->dev.kobj, &bldev_attr_group); |
| backlight_device_unregister(ddata->bl_dev); |
| |
| omapdss_unregister_display(dssdev); |
| |
| acx565akm_disable(dssdev); |
| acx565akm_disconnect(dssdev); |
| |
| omap_dss_put_device(in); |
| |
| return 0; |
| } |
| |
| static const struct of_device_id acx565akm_of_match[] = { |
| { .compatible = "omapdss,sony,acx565akm", }, |
| {}, |
| }; |
| MODULE_DEVICE_TABLE(of, acx565akm_of_match); |
| |
| static struct spi_driver acx565akm_driver = { |
| .driver = { |
| .name = "acx565akm", |
| .of_match_table = acx565akm_of_match, |
| .suppress_bind_attrs = true, |
| }, |
| .probe = acx565akm_probe, |
| .remove = acx565akm_remove, |
| }; |
| |
| module_spi_driver(acx565akm_driver); |
| |
| MODULE_AUTHOR("Nokia Corporation"); |
| MODULE_DESCRIPTION("acx565akm LCD Driver"); |
| MODULE_LICENSE("GPL"); |