[PATCH v2 4/4] drm/tinydrm: add driver for ILI9225 panels
Noralf Trønnes
noralf at tronnes.org
Wed Nov 22 14:22:38 UTC 2017
Den 19.11.2017 21.12, skrev David Lechner:
> This adds a new driver for display panels based on the Ilitek ILI9225
> controller.
>
> This was developed for a no-name panel with a red PCB that is commonly
> marketed for Arduino. See <https://github.com/Nkawu/TFT_22_ILI9225>.
>
> Signed-off-by: David Lechner <david at lechnology.com>
> ---
Reviewed-by: Noralf Trønnes <noralf at tronnes.org>
> v2 changes:
> * use exported mipi_dbi_* functions from patch 3/4
> * new ili9225_command function
>
> MAINTAINERS | 6 +
> drivers/gpu/drm/tinydrm/Kconfig | 10 +
> drivers/gpu/drm/tinydrm/Makefile | 1 +
> drivers/gpu/drm/tinydrm/ili9225.c | 468 ++++++++++++++++++++++++++++++++++++++
> 4 files changed, 485 insertions(+)
> create mode 100644 drivers/gpu/drm/tinydrm/ili9225.c
>
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 0d77f22..72404f3 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -4372,6 +4372,12 @@ T: git git://anongit.freedesktop.org/drm/drm-misc
> S: Maintained
> F: drivers/gpu/drm/tve200/
>
> +DRM DRIVER FOR ILITEK ILI9225 PANELS
> +M: David Lechner <david at lechnology.com>
> +S: Maintained
> +F: drivers/gpu/drm/tinydrm/ili9225.c
> +F: Documentation/devicetree/bindings/display/ili9225.txt
> +
> DRM DRIVER FOR INTEL I810 VIDEO CARDS
> S: Orphan / Obsolete
> F: drivers/gpu/drm/i810/
> diff --git a/drivers/gpu/drm/tinydrm/Kconfig b/drivers/gpu/drm/tinydrm/Kconfig
> index 2e790e7..90c5bd5 100644
> --- a/drivers/gpu/drm/tinydrm/Kconfig
> +++ b/drivers/gpu/drm/tinydrm/Kconfig
> @@ -12,6 +12,16 @@ menuconfig DRM_TINYDRM
> config TINYDRM_MIPI_DBI
> tristate
>
> +config TINYDRM_ILI9225
> + tristate "DRM support for ILI9225 display panels"
> + depends on DRM_TINYDRM && SPI
> + select TINYDRM_MIPI_DBI
> + help
> + DRM driver for the following Ilitek ILI9225 panels:
> + * No-name 2.2" color screen module
> +
> + If M is selected the module will be called ili9225.
> +
> config TINYDRM_MI0283QT
> tristate "DRM support for MI0283QT"
> depends on DRM_TINYDRM && SPI
> diff --git a/drivers/gpu/drm/tinydrm/Makefile b/drivers/gpu/drm/tinydrm/Makefile
> index 0c184bd..8aeee53 100644
> --- a/drivers/gpu/drm/tinydrm/Makefile
> +++ b/drivers/gpu/drm/tinydrm/Makefile
> @@ -4,6 +4,7 @@ obj-$(CONFIG_DRM_TINYDRM) += core/
> obj-$(CONFIG_TINYDRM_MIPI_DBI) += mipi-dbi.o
>
> # Displays
> +obj-$(CONFIG_TINYDRM_ILI9225) += ili9225.o
> obj-$(CONFIG_TINYDRM_MI0283QT) += mi0283qt.o
> obj-$(CONFIG_TINYDRM_REPAPER) += repaper.o
> obj-$(CONFIG_TINYDRM_ST7586) += st7586.o
> diff --git a/drivers/gpu/drm/tinydrm/ili9225.c b/drivers/gpu/drm/tinydrm/ili9225.c
> new file mode 100644
> index 0000000..3b766a2
> --- /dev/null
> +++ b/drivers/gpu/drm/tinydrm/ili9225.c
> @@ -0,0 +1,468 @@
> +/*
> + * DRM driver for Ilitek ILI9225 panels
> + *
> + * Copyright 2017 David Lechner <david at lechnology.com>
> + *
> + * Some code copied from mipi-dbi.c
> + * Copyright 2016 Noralf Trønnes
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation; either version 2 of the License, or
> + * (at your option) any later version.
> + */
> +
> +#include <linux/delay.h>
> +#include <linux/dma-buf.h>
> +#include <linux/gpio/consumer.h>
> +#include <linux/module.h>
> +#include <linux/property.h>
> +#include <linux/spi/spi.h>
> +#include <video/mipi_display.h>
> +
> +#include <drm/drm_gem_framebuffer_helper.h>
> +#include <drm/tinydrm/mipi-dbi.h>
> +#include <drm/tinydrm/tinydrm-helpers.h>
> +
> +#define ILI9225_DRIVER_READ_CODE 0x00
> +#define ILI9225_DRIVER_OUTPUT_CONTROL 0x01
> +#define ILI9225_LCD_AC_DRIVING_CONTROL 0x02
> +#define ILI9225_ENTRY_MODE 0x03
> +#define ILI9225_DISPLAY_CONTROL_1 0x07
> +#define ILI9225_BLANK_PERIOD_CONTROL_1 0x08
> +#define ILI9225_FRAME_CYCLE_CONTROL 0x0b
> +#define ILI9225_INTERFACE_CONTROL 0x0c
> +#define ILI9225_OSCILLATION_CONTROL 0x0f
> +#define ILI9225_POWER_CONTROL_1 0x10
> +#define ILI9225_POWER_CONTROL_2 0x11
> +#define ILI9225_POWER_CONTROL_3 0x12
> +#define ILI9225_POWER_CONTROL_4 0x13
> +#define ILI9225_POWER_CONTROL_5 0x14
> +#define ILI9225_VCI_RECYCLING 0x15
> +#define ILI9225_RAM_ADDRESS_SET_1 0x20
> +#define ILI9225_RAM_ADDRESS_SET_2 0x21
> +#define ILI9225_WRITE_DATA_TO_GRAM 0x22
> +#define ILI9225_SOFTWARE_RESET 0x28
> +#define ILI9225_GATE_SCAN_CONTROL 0x30
> +#define ILI9225_VERTICAL_SCROLL_1 0x31
> +#define ILI9225_VERTICAL_SCROLL_2 0x32
> +#define ILI9225_VERTICAL_SCROLL_3 0x33
> +#define ILI9225_PARTIAL_DRIVING_POS_1 0x34
> +#define ILI9225_PARTIAL_DRIVING_POS_2 0x35
> +#define ILI9225_HORIZ_WINDOW_ADDR_1 0x36
> +#define ILI9225_HORIZ_WINDOW_ADDR_2 0x37
> +#define ILI9225_VERT_WINDOW_ADDR_1 0x38
> +#define ILI9225_VERT_WINDOW_ADDR_2 0x39
> +#define ILI9225_GAMMA_CONTROL_1 0x50
> +#define ILI9225_GAMMA_CONTROL_2 0x51
> +#define ILI9225_GAMMA_CONTROL_3 0x52
> +#define ILI9225_GAMMA_CONTROL_4 0x53
> +#define ILI9225_GAMMA_CONTROL_5 0x54
> +#define ILI9225_GAMMA_CONTROL_6 0x55
> +#define ILI9225_GAMMA_CONTROL_7 0x56
> +#define ILI9225_GAMMA_CONTROL_8 0x57
> +#define ILI9225_GAMMA_CONTROL_9 0x58
> +#define ILI9225_GAMMA_CONTROL_10 0x59
> +
> +static inline int ili9225_command(struct mipi_dbi *mipi, u8 cmd, u16 data)
> +{
> + u8 par[2] = { data >> 8, data & 0xff };
> +
> + return mipi_dbi_command_buf(mipi, cmd, par, 2);
> +}
> +
> +static int ili9225_fb_dirty(struct drm_framebuffer *fb,
> + struct drm_file *file_priv, unsigned int flags,
> + unsigned int color, struct drm_clip_rect *clips,
> + unsigned int num_clips)
> +{
> + struct drm_gem_cma_object *cma_obj = drm_fb_cma_get_gem_obj(fb, 0);
> + struct tinydrm_device *tdev = fb->dev->dev_private;
> + struct mipi_dbi *mipi = mipi_dbi_from_tinydrm(tdev);
> + bool swap = mipi->swap_bytes;
> + struct drm_clip_rect clip;
> + u16 x_start, y_start;
> + u16 x1, x2, y1, y2;
> + int ret = 0;
> + bool full;
> + void *tr;
> +
> + mutex_lock(&tdev->dirty_lock);
> +
> + if (!mipi->enabled)
> + goto out_unlock;
> +
> + /* fbdev can flush even when we're not interested */
> + if (tdev->pipe.plane.fb != fb)
> + goto out_unlock;
> +
> + full = tinydrm_merge_clips(&clip, clips, num_clips, flags,
> + fb->width, fb->height);
> +
> + DRM_DEBUG("Flushing [FB:%d] x1=%u, x2=%u, y1=%u, y2=%u\n", fb->base.id,
> + clip.x1, clip.x2, clip.y1, clip.y2);
> +
> + if (!mipi->dc || !full || swap ||
> + fb->format->format == DRM_FORMAT_XRGB8888) {
> + tr = mipi->tx_buf;
> + ret = mipi_dbi_buf_copy(mipi->tx_buf, fb, &clip, swap);
> + if (ret)
> + goto out_unlock;
> + } else {
> + tr = cma_obj->vaddr;
> + }
> +
> + switch (mipi->rotation) {
> + default:
> + x1 = clip.x1;
> + x2 = clip.x2 - 1;
> + y1 = clip.y1;
> + y2 = clip.y2 - 1;
> + x_start = x1;
> + y_start = y1;
> + break;
> + case 90:
> + x1 = clip.y1;
> + x2 = clip.y2 - 1;
> + y1 = fb->width - clip.x2;
> + y2 = fb->width - clip.x1 - 1;
> + x_start = x1;
> + y_start = y2;
> + break;
> + case 180:
> + x1 = fb->width - clip.x2;
> + x2 = fb->width - clip.x1 - 1;
> + y1 = fb->height - clip.y2;
> + y2 = fb->height - clip.y1 - 1;
> + x_start = x2;
> + y_start = y2;
> + break;
> + case 270:
> + x1 = fb->height - clip.y2;
> + x2 = fb->height - clip.y1 - 1;
> + y1 = clip.x1;
> + y2 = clip.x2 - 1;
> + x_start = x2;
> + y_start = y1;
> + break;
> + }
> +
> + ili9225_command(mipi, ILI9225_HORIZ_WINDOW_ADDR_1, x2);
> + ili9225_command(mipi, ILI9225_HORIZ_WINDOW_ADDR_2, x1);
> + ili9225_command(mipi, ILI9225_VERT_WINDOW_ADDR_1, y2);
> + ili9225_command(mipi, ILI9225_VERT_WINDOW_ADDR_2, y1);
> +
> + ili9225_command(mipi, ILI9225_RAM_ADDRESS_SET_1, x_start);
> + ili9225_command(mipi, ILI9225_RAM_ADDRESS_SET_2, y_start);
> +
> + ret = mipi_dbi_command_buf(mipi, ILI9225_WRITE_DATA_TO_GRAM, tr,
> + (clip.x2 - clip.x1) * (clip.y2 - clip.y1) * 2);
> +
> +out_unlock:
> + mutex_unlock(&tdev->dirty_lock);
> +
> + if (ret)
> + dev_err_once(fb->dev->dev, "Failed to update display %d\n",
> + ret);
> +
> + return ret;
> +}
> +
> +static const struct drm_framebuffer_funcs ili9225_fb_funcs = {
> + .destroy = drm_gem_fb_destroy,
> + .create_handle = drm_gem_fb_create_handle,
> + .dirty = ili9225_fb_dirty,
> +};
> +
> +static void ili9225_pipe_enable(struct drm_simple_display_pipe *pipe,
> + struct drm_crtc_state *crtc_state)
> +{
> + struct tinydrm_device *tdev = pipe_to_tinydrm(pipe);
> + struct mipi_dbi *mipi = mipi_dbi_from_tinydrm(tdev);
> + struct drm_framebuffer *fb = pipe->plane.fb;
> + struct device *dev = tdev->drm->dev;
> + int ret;
> + u8 am_id;
> +
> + DRM_DEBUG_KMS("\n");
> +
> + mipi_dbi_hw_reset(mipi);
> +
> + /*
> + * There don't seem to be two example init sequences that match, so
> + * using the one from the popular Arduino library for this display.
> + * https://github.com/Nkawu/TFT_22_ILI9225/blob/master/src/TFT_22_ILI9225.cpp
> + */
> +
> + ret = ili9225_command(mipi, ILI9225_POWER_CONTROL_1, 0x0000);
> + if (ret) {
> + DRM_DEV_ERROR(dev, "Error sending command %d\n", ret);
> + return;
> + }
> + ili9225_command(mipi, ILI9225_POWER_CONTROL_2, 0x0000);
> + ili9225_command(mipi, ILI9225_POWER_CONTROL_3, 0x0000);
> + ili9225_command(mipi, ILI9225_POWER_CONTROL_4, 0x0000);
> + ili9225_command(mipi, ILI9225_POWER_CONTROL_5, 0x0000);
> +
> + msleep(40);
> +
> + ili9225_command(mipi, ILI9225_POWER_CONTROL_2, 0x0018);
> + ili9225_command(mipi, ILI9225_POWER_CONTROL_3, 0x6121);
> + ili9225_command(mipi, ILI9225_POWER_CONTROL_4, 0x006f);
> + ili9225_command(mipi, ILI9225_POWER_CONTROL_5, 0x495f);
> + ili9225_command(mipi, ILI9225_POWER_CONTROL_1, 0x0800);
> +
> + msleep(10);
> +
> + ili9225_command(mipi, ILI9225_POWER_CONTROL_2, 0x103b);
> +
> + msleep(50);
> +
> + switch (mipi->rotation) {
> + default:
> + am_id = 0x30;
> + break;
> + case 90:
> + am_id = 0x18;
> + break;
> + case 180:
> + am_id = 0x00;
> + break;
> + case 270:
> + am_id = 0x28;
> + break;
> + }
> + ili9225_command(mipi, ILI9225_DRIVER_OUTPUT_CONTROL, 0x011c);
> + ili9225_command(mipi, ILI9225_LCD_AC_DRIVING_CONTROL, 0x0100);
> + ili9225_command(mipi, ILI9225_ENTRY_MODE, 0x1000 | am_id);
> + ili9225_command(mipi, ILI9225_DISPLAY_CONTROL_1, 0x0000);
> + ili9225_command(mipi, ILI9225_BLANK_PERIOD_CONTROL_1, 0x0808);
> + ili9225_command(mipi, ILI9225_FRAME_CYCLE_CONTROL, 0x1100);
> + ili9225_command(mipi, ILI9225_INTERFACE_CONTROL, 0x0000);
> + ili9225_command(mipi, ILI9225_OSCILLATION_CONTROL, 0x0d01);
> + ili9225_command(mipi, ILI9225_VCI_RECYCLING, 0x0020);
> + ili9225_command(mipi, ILI9225_RAM_ADDRESS_SET_1, 0x0000);
> + ili9225_command(mipi, ILI9225_RAM_ADDRESS_SET_2, 0x0000);
> +
> + ili9225_command(mipi, ILI9225_GATE_SCAN_CONTROL, 0x0000);
> + ili9225_command(mipi, ILI9225_VERTICAL_SCROLL_1, 0x00db);
> + ili9225_command(mipi, ILI9225_VERTICAL_SCROLL_2, 0x0000);
> + ili9225_command(mipi, ILI9225_VERTICAL_SCROLL_3, 0x0000);
> + ili9225_command(mipi, ILI9225_PARTIAL_DRIVING_POS_1, 0x00db);
> + ili9225_command(mipi, ILI9225_PARTIAL_DRIVING_POS_2, 0x0000);
> +
> + ili9225_command(mipi, ILI9225_GAMMA_CONTROL_1, 0x0000);
> + ili9225_command(mipi, ILI9225_GAMMA_CONTROL_2, 0x0808);
> + ili9225_command(mipi, ILI9225_GAMMA_CONTROL_3, 0x080a);
> + ili9225_command(mipi, ILI9225_GAMMA_CONTROL_4, 0x000a);
> + ili9225_command(mipi, ILI9225_GAMMA_CONTROL_5, 0x0a08);
> + ili9225_command(mipi, ILI9225_GAMMA_CONTROL_6, 0x0808);
> + ili9225_command(mipi, ILI9225_GAMMA_CONTROL_7, 0x0000);
> + ili9225_command(mipi, ILI9225_GAMMA_CONTROL_8, 0x0a00);
> + ili9225_command(mipi, ILI9225_GAMMA_CONTROL_9, 0x0710);
> + ili9225_command(mipi, ILI9225_GAMMA_CONTROL_10, 0x0710);
> +
> + ili9225_command(mipi, ILI9225_DISPLAY_CONTROL_1, 0x0012);
> +
> + msleep(50);
> +
> + ili9225_command(mipi, ILI9225_DISPLAY_CONTROL_1, 0x1017);
> +
> + mipi->enabled = true;
> +
> + if (fb)
> + fb->funcs->dirty(fb, NULL, 0, 0, NULL, 0);
> +}
> +
> +static void ili9225_pipe_disable(struct drm_simple_display_pipe *pipe)
> +{
> + struct tinydrm_device *tdev = pipe_to_tinydrm(pipe);
> + struct mipi_dbi *mipi = mipi_dbi_from_tinydrm(tdev);
> +
> + DRM_DEBUG_KMS("\n");
> +
> + if (!mipi->enabled)
> + return;
> +
> + ili9225_command(mipi, ILI9225_DISPLAY_CONTROL_1, 0x0000);
> + msleep(50);
> + ili9225_command(mipi, ILI9225_POWER_CONTROL_2, 0x0007);
> + msleep(50);
> + ili9225_command(mipi, ILI9225_POWER_CONTROL_1, 0x0a02);
> +
> + mipi->enabled = false;
> +}
> +
> +static int ili9225_dbi_command(struct mipi_dbi *mipi, u8 cmd, u8 *par,
> + size_t num)
> +{
> + struct spi_device *spi = mipi->spi;
> + unsigned int bpw = 8;
> + u32 speed_hz;
> + int ret;
> +
> + gpiod_set_value_cansleep(mipi->dc, 0);
> + speed_hz = mipi_dbi_spi_cmd_max_speed(spi, 1);
> + ret = tinydrm_spi_transfer(spi, speed_hz, NULL, 8, &cmd, 1);
> + if (ret || !num)
> + return ret;
> +
> + if (cmd == ILI9225_WRITE_DATA_TO_GRAM && !mipi->swap_bytes)
> + bpw = 16;
> +
> + gpiod_set_value_cansleep(mipi->dc, 1);
> + speed_hz = mipi_dbi_spi_cmd_max_speed(spi, num);
> +
> + return tinydrm_spi_transfer(spi, speed_hz, NULL, bpw, par, num);
> +}
> +
> +static const u32 ili9225_formats[] = {
> + DRM_FORMAT_RGB565,
> + DRM_FORMAT_XRGB8888,
> +};
> +
> +static int ili9225_init(struct device *dev, struct mipi_dbi *mipi,
> + const struct drm_simple_display_pipe_funcs *pipe_funcs,
> + struct drm_driver *driver,
> + const struct drm_display_mode *mode,
> + unsigned int rotation)
> +{
> + size_t bufsize = mode->vdisplay * mode->hdisplay * sizeof(u16);
> + struct tinydrm_device *tdev = &mipi->tinydrm;
> + int ret;
> +
> + if (!mipi->command)
> + return -EINVAL;
> +
> + mutex_init(&mipi->cmdlock);
> +
> + mipi->tx_buf = devm_kmalloc(dev, bufsize, GFP_KERNEL);
> + if (!mipi->tx_buf)
> + return -ENOMEM;
> +
> + ret = devm_tinydrm_init(dev, tdev, &ili9225_fb_funcs, driver);
> + if (ret)
> + return ret;
> +
> + ret = tinydrm_display_pipe_init(tdev, pipe_funcs,
> + DRM_MODE_CONNECTOR_VIRTUAL,
> + ili9225_formats,
> + ARRAY_SIZE(ili9225_formats), mode,
> + rotation);
> + if (ret)
> + return ret;
> +
> + tdev->drm->mode_config.preferred_depth = 16;
> + mipi->rotation = rotation;
> +
> + drm_mode_config_reset(tdev->drm);
> +
> + DRM_DEBUG_KMS("preferred_depth=%u, rotation = %u\n",
> + tdev->drm->mode_config.preferred_depth, rotation);
> +
> + return 0;
> +}
> +
> +static const struct drm_simple_display_pipe_funcs ili9225_pipe_funcs = {
> + .enable = ili9225_pipe_enable,
> + .disable = ili9225_pipe_disable,
> + .update = tinydrm_display_pipe_update,
> + .prepare_fb = tinydrm_display_pipe_prepare_fb,
> +};
> +
> +static const struct drm_display_mode ili9225_mode = {
> + TINYDRM_MODE(176, 220, 35, 44),
> +};
> +
> +DEFINE_DRM_GEM_CMA_FOPS(ili9225_fops);
> +
> +static struct drm_driver ili9225_driver = {
> + .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME |
> + DRIVER_ATOMIC,
> + .fops = &ili9225_fops,
> + TINYDRM_GEM_DRIVER_OPS,
> + .lastclose = tinydrm_lastclose,
> + .name = "ili9225",
> + .desc = "Ilitek ILI9225",
> + .date = "20171106",
> + .major = 1,
> + .minor = 0,
> +};
> +
> +static const struct of_device_id ili9225_of_match[] = {
> + { .compatible = "ilitek,ili9225-2.2in-176x220" },
> + {},
> +};
> +MODULE_DEVICE_TABLE(of, ili9225_of_match);
> +
> +static const struct spi_device_id ili9225_id[] = {
> + { "ili9225-2.2in-176x220", 0 },
> + { },
> +};
> +MODULE_DEVICE_TABLE(spi, ili9225_id);
> +
> +static int ili9225_probe(struct spi_device *spi)
> +{
> + struct device *dev = &spi->dev;
> + struct mipi_dbi *mipi;
> + struct gpio_desc *rs;
> + u32 rotation = 0;
> + int ret;
> +
> + mipi = devm_kzalloc(dev, sizeof(*mipi), GFP_KERNEL);
> + if (!mipi)
> + return -ENOMEM;
> +
> + mipi->reset = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
> + if (IS_ERR(mipi->reset)) {
> + DRM_DEV_ERROR(dev, "Failed to get gpio 'reset'\n");
> + return PTR_ERR(mipi->reset);
> + }
> +
> + rs = devm_gpiod_get(dev, "rs", GPIOD_OUT_LOW);
> + if (IS_ERR(rs)) {
> + DRM_DEV_ERROR(dev, "Failed to get gpio 'rs'\n");
> + return PTR_ERR(rs);
> + }
> +
> + device_property_read_u32(dev, "rotation", &rotation);
> +
> + ret = mipi_dbi_spi_init(spi, mipi, rs);
> + if (ret)
> + return ret;
> +
> + /* override the command function set in mipi_dbi_spi_init() */
> + mipi->command = ili9225_dbi_command;
> +
> + ret = ili9225_init(&spi->dev, mipi, &ili9225_pipe_funcs,
> + &ili9225_driver, &ili9225_mode, rotation);
> + if (ret)
> + return ret;
> +
> + spi_set_drvdata(spi, mipi);
> +
> + return devm_tinydrm_register(&mipi->tinydrm);
> +}
> +
> +static void ili9225_shutdown(struct spi_device *spi)
> +{
> + struct mipi_dbi *mipi = spi_get_drvdata(spi);
> +
> + tinydrm_shutdown(&mipi->tinydrm);
> +}
> +
> +static struct spi_driver ili9225_spi_driver = {
> + .driver = {
> + .name = "ili9225",
> + .owner = THIS_MODULE,
> + .of_match_table = ili9225_of_match,
> + },
> + .id_table = ili9225_id,
> + .probe = ili9225_probe,
> + .shutdown = ili9225_shutdown,
> +};
> +module_spi_driver(ili9225_spi_driver);
> +
> +MODULE_DESCRIPTION("Ilitek ILI9225 DRM driver");
> +MODULE_AUTHOR("David Lechner <david at lechnology.com>");
> +MODULE_LICENSE("GPL");
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