diff options
Diffstat (limited to 'drivers/gpu/drm/omapdrm/displays/panel-sony-acx565akm.c')
| -rw-r--r-- | drivers/gpu/drm/omapdrm/displays/panel-sony-acx565akm.c | 755 |
1 files changed, 0 insertions, 755 deletions
diff --git a/drivers/gpu/drm/omapdrm/displays/panel-sony-acx565akm.c b/drivers/gpu/drm/omapdrm/displays/panel-sony-acx565akm.c deleted file mode 100644 index 588a1a6bbcc3..000000000000 --- a/drivers/gpu/drm/omapdrm/displays/panel-sony-acx565akm.c +++ /dev/null @@ -1,755 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * 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@ti.com> - * Adapted to new DSS2 framework: Roger Quadros <roger.quadros@nokia.com> - */ - -#include <linux/backlight.h> -#include <linux/delay.h> -#include <linux/gpio/consumer.h> -#include <linux/jiffies.h> -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/platform_device.h> -#include <linux/sched.h> -#include <linux/spi/spi.h> - -#include "../dss/omapdss.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 gpio_desc *reset_gpio; - - struct videomode vm; - - 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 videomode acx565akm_panel_vm = { - .hactive = 800, - .vactive = 480, - .pixelclock = 24000000, - .hfront_porch = 28, - .hsync_len = 4, - .hback_porch = 24, - .vfront_porch = 3, - .vsync_len = 3, - .vback_porch = 4, - - .flags = DISPLAY_FLAGS_HSYNC_LOW | DISPLAY_FLAGS_VSYNC_LOW, -}; - -#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) -{ - __be32 v; - u32 disp_status; - int enabled; - - acx565akm_read(ddata, MIPID_CMD_READ_DISP_STATUS, (u8 *)&v, 4); - disp_status = __be32_to_cpu(v); - 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 int 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 int get_cabc_mode(struct panel_drv_data *ddata) -{ - return ddata->cabc_mode; -} - -static unsigned int 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 const struct attribute_group bldev_attr_group = { - .attrs = bldev_attrs, -}; - -static int acx565akm_connect(struct omap_dss_device *src, - struct omap_dss_device *dst) -{ - return 0; -} - -static void acx565akm_disconnect(struct omap_dss_device *src, - struct omap_dss_device *dst) -{ -} - -static int acx565akm_panel_power_on(struct omap_dss_device *dssdev) -{ - struct panel_drv_data *ddata = to_panel_data(dssdev); - - dev_dbg(&ddata->spi->dev, "%s\n", __func__); - - /*FIXME tweak me */ - msleep(50); - - if (ddata->reset_gpio) - gpiod_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); - - 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 (ddata->reset_gpio) - gpiod_set_value(ddata->reset_gpio, 0); - - /* FIXME need to tweak this delay */ - msleep(100); -} - -static void acx565akm_enable(struct omap_dss_device *dssdev) -{ - struct panel_drv_data *ddata = to_panel_data(dssdev); - - mutex_lock(&ddata->mutex); - acx565akm_panel_power_on(dssdev); - mutex_unlock(&ddata->mutex); -} - -static void acx565akm_disable(struct omap_dss_device *dssdev) -{ - struct panel_drv_data *ddata = to_panel_data(dssdev); - - mutex_lock(&ddata->mutex); - acx565akm_panel_power_off(dssdev); - mutex_unlock(&ddata->mutex); -} - -static int acx565akm_get_modes(struct omap_dss_device *dssdev, - struct drm_connector *connector) -{ - struct panel_drv_data *ddata = to_panel_data(dssdev); - - return omapdss_display_get_modes(connector, &ddata->vm); -} - -static const struct omap_dss_device_ops acx565akm_ops = { - .connect = acx565akm_connect, - .disconnect = acx565akm_disconnect, - - .enable = acx565akm_enable, - .disable = acx565akm_disable, - - .get_modes = acx565akm_get_modes, -}; - -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; - struct gpio_desc *gpio; - 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); - - gpio = devm_gpiod_get_optional(&spi->dev, "reset", GPIOD_OUT_LOW); - if (IS_ERR(gpio)) { - dev_err(&spi->dev, "failed to parse reset gpio\n"); - return PTR_ERR(gpio); - } - - ddata->reset_gpio = gpio; - - if (ddata->reset_gpio) - gpiod_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 && ddata->reset_gpio) - gpiod_set_value(ddata->reset_gpio, 0); - - if (r) { - dev_err(&spi->dev, "%s panel detect error\n", __func__); - return r; - } - - 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)) - return PTR_ERR(bldev); - 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_backlight_unregister; - } - 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->vm = acx565akm_panel_vm; - - dssdev = &ddata->dssdev; - dssdev->dev = &spi->dev; - dssdev->ops = &acx565akm_ops; - dssdev->type = OMAP_DISPLAY_TYPE_SDI; - dssdev->display = true; - dssdev->owner = THIS_MODULE; - dssdev->of_ports = BIT(0); - dssdev->ops_flags = OMAP_DSS_DEVICE_OP_MODES; - dssdev->bus_flags = DRM_BUS_FLAG_DE_HIGH - | DRM_BUS_FLAG_SYNC_DRIVE_NEGEDGE - | DRM_BUS_FLAG_PIXDATA_DRIVE_POSEDGE; - - omapdss_display_init(dssdev); - omapdss_device_register(dssdev); - - return 0; - -err_backlight_unregister: - backlight_device_unregister(bldev); - 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; - - 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_device_unregister(dssdev); - - if (omapdss_device_is_enabled(dssdev)) - acx565akm_disable(dssdev); - - 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_ALIAS("spi:sony,acx565akm"); -MODULE_AUTHOR("Nokia Corporation"); -MODULE_DESCRIPTION("acx565akm LCD Driver"); -MODULE_LICENSE("GPL"); |