* [PATCH] s3c-fb: Add support ld9040 amoled panel driver
@ 2010-09-09 2:16 Donghwa Lee
2010-09-09 6:46 ` Marek Szyprowski
0 siblings, 1 reply; 2+ messages in thread
From: Donghwa Lee @ 2010-09-09 2:16 UTC (permalink / raw)
To: linux-arm-kernel
This patch supports ld9040 amoled panel driver.
It is similar to s6e63m0 panel driver and use spi gpio
to send panel information.
Signed-off-by: Donghwa Lee <dh09.lee@samsung•com>
Signed-off-by: Inki Dae <inki.dae@samsung•com>
---
drivers/video/backlight/Kconfig | 7 +
drivers/video/backlight/Makefile | 1 +
drivers/video/backlight/ld9040.c | 687 ++++++++++++++++++++++++++++++++++++++
3 files changed, 695 insertions(+), 0 deletions(-)
create mode 100644 drivers/video/backlight/ld9040.c
diff --git a/drivers/video/backlight/Kconfig b/drivers/video/backlight/Kconfig
index e54a337..b8381d0 100644
--- a/drivers/video/backlight/Kconfig
+++ b/drivers/video/backlight/Kconfig
@@ -109,6 +109,13 @@ config LCD_S6E63M0
If you have an S6E63M0 LCD Panel, say Y to enable its
LCD control driver.
+config LCD_LD9040
+ bool "LD9040 AMOLED LCD Driver"
+ depends on SPI && BACKLIGHT_CLASS_DEVICE
+ help
+ If you have an LD9040 LCD Panel, say Y to enable its
+ LCD control driver.
+
endif # LCD_CLASS_DEVICE
#
diff --git a/drivers/video/backlight/Makefile b/drivers/video/backlight/Makefile
index 44c0f81..a52248e 100644
--- a/drivers/video/backlight/Makefile
+++ b/drivers/video/backlight/Makefile
@@ -12,6 +12,7 @@ obj-$(CONFIG_LCD_VGG2432A4) += vgg2432a4.o
obj-$(CONFIG_LCD_TDO24M) += tdo24m.o
obj-$(CONFIG_LCD_TOSA) += tosa_lcd.o
obj-$(CONFIG_LCD_S6E63M0) += s6e63m0.o
+obj-$(CONFIG_LCD_S6E63M0) += ld9040.o
obj-$(CONFIG_BACKLIGHT_CLASS_DEVICE) += backlight.o
obj-$(CONFIG_BACKLIGHT_ATMEL_PWM) += atmel-pwm-bl.o
diff --git a/drivers/video/backlight/ld9040.c b/drivers/video/backlight/ld9040.c
new file mode 100644
index 0000000..7a2109f
--- /dev/null
+++ b/drivers/video/backlight/ld9040.c
@@ -0,0 +1,687 @@
+/*
+ * ld9040 AMOLED LCD panel driver.
+ *
+ * Author: Donghwa Lee <dh09.lee@samsung•com>
+ *
+ * Derived from drivers/video/omap/lcd-apollon.c
+ *
+ * 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.
+ *
+ * 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, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#include <linux/wait.h>
+#include <linux/fb.h>
+#include <linux/delay.h>
+#include <linux/gpio.h>
+#include <linux/spi/spi.h>
+#include <linux/irq.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/lcd.h>
+#include <linux/backlight.h>
+
+#define SLEEPMSEC 0x1000
+#define ENDDEF 0x2000
+#define DEFMASK 0xFF00
+#define COMMAND_ONLY 0xFE
+#define DATA_ONLY 0xFF
+
+#define POWER_IS_ON(pwr) ((pwr) <= FB_BLANK_NORMAL)
+
+struct ld9040 {
+ struct device *dev;
+ struct spi_device *spi;
+ unsigned int power;
+ struct lcd_device *ld;
+ struct lcd_platform_data *lcd_pd;
+};
+
+static const unsigned short SEQ_SWRESET[] = {
+ 0x01, COMMAND_ONLY,
+ ENDDEF, 0x00
+};
+
+static const unsigned short SEQ_USER_SETTING[] = {
+ 0xF0, 0x5A,
+
+ DATA_ONLY, 0x5A,
+ ENDDEF, 0x00
+};
+
+static const unsigned short SEQ_ELVSS[] = {
+ 0xB1, 0x0B,
+
+ DATA_ONLY, 0x00,
+ DATA_ONLY, 0x16,
+ ENDDEF, 0x00
+};
+
+static const unsigned short SEQ_GTCON[] = {
+ 0xF7, 0x09,
+
+ DATA_ONLY, 0x00,
+ DATA_ONLY, 0x00,
+ ENDDEF, 0x00
+};
+
+static const unsigned short SEQ_GAMMA_SET1[] = {
+ 0xF9, 0x18,
+
+ DATA_ONLY, 0x9A,
+ DATA_ONLY, 0xB0,
+ DATA_ONLY, 0xAB,
+ DATA_ONLY, 0xC4,
+ DATA_ONLY, 0x00,
+ DATA_ONLY, 0xAA,
+ DATA_ONLY, 0x00,
+ DATA_ONLY, 0xA1,
+ DATA_ONLY, 0xB5,
+ DATA_ONLY, 0xB0,
+ DATA_ONLY, 0xC7,
+ DATA_ONLY, 0x00,
+ DATA_ONLY, 0xC5,
+ DATA_ONLY, 0x24,
+ DATA_ONLY, 0xA7,
+ DATA_ONLY, 0xAC,
+ DATA_ONLY, 0x9A,
+ DATA_ONLY, 0xB6,
+ DATA_ONLY, 0x00,
+ DATA_ONLY, 0xE5,
+ ENDDEF, 0x00
+};
+
+static const unsigned short SEQ_GAMMA_CTRL[] = {
+ 0xFB, 0x00,
+
+ DATA_ONLY, 0x5A,
+ ENDDEF, 0x00
+};
+
+static const unsigned short SEQ_APON[] = {
+ 0xF3, 0x00,
+
+ DATA_ONLY, 0x00,
+ DATA_ONLY, 0x00,
+ DATA_ONLY, 0x0A,
+ DATA_ONLY, 0x02,
+ ENDDEF, 0x00
+};
+
+static const unsigned short SEQ_DISPCTL[] = {
+ 0xF2, 0x02,
+
+ DATA_ONLY, 0x03,
+ DATA_ONLY, 0x1C,
+ DATA_ONLY, 0x10,
+ DATA_ONLY, 0x10,
+ ENDDEF, 0x00
+};
+
+static const unsigned short SEQ_SLPOUT[] = {
+ 0x11, COMMAND_ONLY,
+ ENDDEF, 0x00
+};
+
+static const unsigned short SEQ_SLPIN[] = {
+ 0x10, COMMAND_ONLY,
+ ENDDEF, 0x00
+};
+
+static const unsigned short SEQ_DISPON[] = {
+ 0x29, COMMAND_ONLY,
+ ENDDEF, 0x00
+};
+
+static const unsigned short SEQ_DISPOFF[] = {
+ 0x28, COMMAND_ONLY,
+ ENDDEF, 0x00
+};
+
+static const unsigned short SEQ_VCI1_1ST_EN[] = {
+ 0xF3, 0x10,
+
+ DATA_ONLY, 0x00,
+ DATA_ONLY, 0x00,
+ DATA_ONLY, 0x00,
+ DATA_ONLY, 0x02,
+ ENDDEF, 0x00
+};
+
+static const unsigned short SEQ_VL1_EN[] = {
+ 0xF3, 0x11,
+
+ DATA_ONLY, 0x00,
+ DATA_ONLY, 0x00,
+ DATA_ONLY, 0x00,
+ DATA_ONLY, 0x02,
+ ENDDEF, 0x00
+};
+
+static const unsigned short SEQ_VL2_EN[] = {
+ 0xF3, 0x13,
+
+ DATA_ONLY, 0x00,
+ DATA_ONLY, 0x00,
+ DATA_ONLY, 0x00,
+ DATA_ONLY, 0x02,
+ ENDDEF, 0x00
+};
+
+static const unsigned short SEQ_VCI1_2ND_EN[] = {
+ 0xF3, 0x33,
+
+ DATA_ONLY, 0x00,
+ DATA_ONLY, 0x00,
+ DATA_ONLY, 0x00,
+ DATA_ONLY, 0x02,
+ ENDDEF, 0x00
+};
+
+static const unsigned short SEQ_VL3_EN[] = {
+ 0xF3, 0x37,
+
+ DATA_ONLY, 0x00,
+ DATA_ONLY, 0x00,
+ DATA_ONLY, 0x00,
+ DATA_ONLY, 0x02,
+ ENDDEF, 0x00
+};
+
+static const unsigned short SEQ_VREG1_AMP_EN[] = {
+ 0xF3, 0x37,
+
+ DATA_ONLY, 0x01,
+ DATA_ONLY, 0x00,
+ DATA_ONLY, 0x00,
+ DATA_ONLY, 0x02,
+ ENDDEF, 0x00
+};
+
+static const unsigned short SEQ_VGH_AMP_EN[] = {
+ 0xF3, 0x37,
+
+ DATA_ONLY, 0x11,
+ DATA_ONLY, 0x00,
+ DATA_ONLY, 0x00,
+ DATA_ONLY, 0x02,
+ ENDDEF, 0x00
+};
+
+static const unsigned short SEQ_VGL_AMP_EN[] = {
+ 0xF3, 0x37,
+
+ DATA_ONLY, 0x31,
+ DATA_ONLY, 0x00,
+ DATA_ONLY, 0x00,
+ DATA_ONLY, 0x02,
+ ENDDEF, 0x00
+};
+
+static const unsigned short SEQ_VMOS_AMP_EN[] = {
+ 0xF3, 0x37,
+
+ DATA_ONLY, 0xB1,
+ DATA_ONLY, 0x00,
+ DATA_ONLY, 0x00,
+ DATA_ONLY, 0x03,
+ ENDDEF, 0x00
+};
+
+static const unsigned short SEQ_VINT_AMP_EN[] = {
+ 0xF3, 0x37,
+
+ DATA_ONLY, 0xF1,
+ /* DATA_ONLY, 0x71, VMOS/VBL/VBH not used */
+ DATA_ONLY, 0x00,
+ DATA_ONLY, 0x00,
+ DATA_ONLY, 0x03,
+ /* DATA_ONLY, 0x02, VMOS/VBL/VBH not used */
+ ENDDEF, 0x00
+};
+
+static const unsigned short SEQ_VBH_AMP_EN[] = {
+ 0xF3, 0x37,
+
+ DATA_ONLY, 0xF9,
+ DATA_ONLY, 0x00,
+ DATA_ONLY, 0x00,
+ DATA_ONLY, 0x03,
+ ENDDEF, 0x00
+};
+
+static const unsigned short SEQ_VBL_AMP_EN[] = {
+ 0xF3, 0x37,
+
+ DATA_ONLY, 0xFD,
+ DATA_ONLY, 0x00,
+ DATA_ONLY, 0x00,
+ DATA_ONLY, 0x03,
+ ENDDEF, 0x00
+};
+
+static const unsigned short SEQ_GAM_AMP_EN[] = {
+ 0xF3, 0x37,
+
+ DATA_ONLY, 0xFF,
+ /* DATA_ONLY, 0x73, VMOS/VBL/VBH not used */
+ DATA_ONLY, 0x00,
+ DATA_ONLY, 0x00,
+ DATA_ONLY, 0x03,
+ /* DATA_ONLY, 0x02, VMOS/VBL/VBH not used */
+ ENDDEF, 0x00
+};
+
+static const unsigned short SEQ_SD_AMP_EN[] = {
+ 0xF3, 0x37,
+
+ DATA_ONLY, 0xFF,
+ /* DATA_ONLY, 0x73, VMOS/VBL/VBH not used */
+ DATA_ONLY, 0x80,
+ DATA_ONLY, 0x00,
+ DATA_ONLY, 0x03,
+ /* DATA_ONLY, 0x02, VMOS/VBL/VBH not used */
+ ENDDEF, 0x00
+};
+
+static const unsigned short SEQ_GLS_EN[] = {
+ 0xF3, 0x37,
+
+ DATA_ONLY, 0xFF,
+ /* DATA_ONLY, 0x73, VMOS/VBL/VBH not used */
+ DATA_ONLY, 0x81,
+ DATA_ONLY, 0x00,
+ DATA_ONLY, 0x03,
+ /* DATA_ONLY, 0x02, VMOS/VBL/VBH not used */
+ ENDDEF, 0x00
+};
+
+static const unsigned short SEQ_ELS_EN[] = {
+ 0xF3, 0x37,
+
+ DATA_ONLY, 0xFF,
+ /* DATA_ONLY, 0x73, VMOS/VBL/VBH not used */
+ DATA_ONLY, 0x83,
+ DATA_ONLY, 0x00,
+ DATA_ONLY, 0x03,
+ /* DATA_ONLY, 0x02, VMOS/VBL/VBH not used */
+ ENDDEF, 0x00
+};
+
+static const unsigned short SEQ_EL_ON[] = {
+ 0xF3, 0x37,
+
+ DATA_ONLY, 0xFF,
+ /* DATA_ONLY, 0x73, VMOS/VBL/VBH not used */
+ DATA_ONLY, 0x87,
+ DATA_ONLY, 0x00,
+ DATA_ONLY, 0x03,
+ /* DATA_ONLY, 0x02, VMOS/VBL/VBH not used */
+ ENDDEF, 0x00
+};
+
+static int ld9040_spi_write_byte(struct ld9040 *lcd, int addr, int data)
+{
+ u16 buf[1];
+ struct spi_message msg;
+
+ struct spi_transfer xfer = {
+ .len = 2,
+ .tx_buf = buf,
+ };
+
+ buf[0] = (addr << 8) | data;
+
+ spi_message_init(&msg);
+ spi_message_add_tail(&xfer, &msg);
+
+ return spi_sync(lcd->spi, &msg);
+}
+
+static int ld9040_spi_write(struct ld9040 *lcd, unsigned char address,
+ unsigned char command)
+{
+ int ret = 0;
+
+ if (address != DATA_ONLY)
+ ret = ld9040_spi_write_byte(lcd, 0x0, address);
+ if (command != COMMAND_ONLY)
+ ret = ld9040_spi_write_byte(lcd, 0x1, command);
+
+ return ret;
+}
+
+static int ld9040_panel_send_sequence(struct ld9040 *lcd,
+ const unsigned short *wbuf)
+{
+ int ret = 0, i = 0;
+
+ while ((wbuf[i] & DEFMASK) != ENDDEF) {
+ if ((wbuf[i] & DEFMASK) != SLEEPMSEC) {
+ ret = ld9040_spi_write(lcd, wbuf[i], wbuf[i+1]);
+ if (ret)
+ break;
+ } else
+ udelay(wbuf[i+1]*1000);
+ i += 2;
+ }
+
+ return ret;
+}
+
+static int ld9040_ldi_init(struct ld9040 *lcd)
+{
+ int ret, i;
+ const unsigned short *init_seq[] = {
+ SEQ_USER_SETTING,
+ SEQ_ELVSS,
+ SEQ_GTCON,
+ SEQ_GAMMA_SET1,
+ SEQ_GAMMA_CTRL,
+ SEQ_SLPOUT,
+ };
+
+ for (i = 0; i < ARRAY_SIZE(init_seq); i++) {
+ ret = ld9040_panel_send_sequence(lcd, init_seq[i]);
+ mdelay(5);
+ if (ret)
+ break;
+ }
+
+ return ret;
+}
+
+static int ld9040_ldi_enable(struct ld9040 *lcd)
+{
+ int ret = 0;
+
+ ret = ld9040_panel_send_sequence(lcd, SEQ_DISPON);
+
+ return ret;
+}
+
+static int ld9040_ldi_disable(struct ld9040 *lcd)
+{
+ int ret;
+
+ ret = ld9040_panel_send_sequence(lcd, SEQ_DISPOFF);
+
+ return ret;
+}
+
+static int ld9040_power_on(struct ld9040 *lcd)
+{
+ int ret = 0;
+ struct lcd_platform_data *pd = NULL;
+ pd = lcd->lcd_pd;
+ if (!pd) {
+ dev_err(lcd->dev, "platform data is NULL.\n");
+ return -EFAULT;
+ }
+
+ if (!pd->power_on) {
+ dev_err(lcd->dev, "power_on is NULL.\n");
+ return -EFAULT;
+ } else {
+ pd->power_on(lcd->ld, 1);
+ mdelay(pd->power_on_delay);
+ }
+
+ if (!pd->reset) {
+ dev_err(lcd->dev, "reset is NULL.\n");
+ return -EFAULT;
+ } else {
+ pd->reset(lcd->ld);
+ mdelay(pd->reset_delay);
+ }
+
+ ret = ld9040_ldi_init(lcd);
+ if (ret) {
+ dev_err(lcd->dev, "failed to initialize ldi.\n");
+ return ret;
+ }
+
+ ret = ld9040_ldi_enable(lcd);
+ if (ret) {
+ dev_err(lcd->dev, "failed to enable ldi.\n");
+ return ret;
+ }
+
+ return 0;
+}
+
+static int ld9040_power_off(struct ld9040 *lcd)
+{
+ int ret = 0;
+ struct lcd_platform_data *pd = NULL;
+
+ pd = lcd->lcd_pd;
+ if (!pd) {
+ dev_err(lcd->dev, "platform data is NULL.\n");
+ return -EFAULT;
+ }
+
+ ret = ld9040_ldi_disable(lcd);
+ if (ret) {
+ dev_err(lcd->dev, "lcd setting failed.\n");
+ return -EIO;
+ }
+
+ mdelay(pd->power_off_delay);
+
+ if (!pd->power_on) {
+ dev_err(lcd->dev, "power_on is NULL.\n");
+ return -EFAULT;
+ } else
+ pd->power_on(lcd->ld, 0);
+
+ return 0;
+}
+
+static int ld9040_power(struct ld9040 *lcd, int power)
+{
+ int ret = 0;
+
+ if (POWER_IS_ON(power) && !POWER_IS_ON(lcd->power))
+ ret = ld9040_power_on(lcd);
+ else if (!POWER_IS_ON(power) && POWER_IS_ON(lcd->power))
+ ret = ld9040_power_off(lcd);
+
+ if (!ret)
+ lcd->power = power;
+
+ return ret;
+}
+
+static int ld9040_set_power(struct lcd_device *ld, int power)
+{
+ struct ld9040 *lcd = lcd_get_data(ld);
+
+ if (power != FB_BLANK_UNBLANK && power != FB_BLANK_POWERDOWN &&
+ power != FB_BLANK_NORMAL) {
+ dev_err(lcd->dev, "power value should be 0, 1 or 4.\n");
+ return -EINVAL;
+ }
+
+ return ld9040_power(lcd, power);
+}
+
+static int ld9040_get_power(struct lcd_device *ld)
+{
+ struct ld9040 *lcd = lcd_get_data(ld);
+
+ return lcd->power;
+}
+
+static struct lcd_ops ld9040_lcd_ops = {
+ .set_power = ld9040_set_power,
+ .get_power = ld9040_get_power,
+};
+
+
+static int __init ld9040_probe(struct spi_device *spi)
+{
+ int ret = 0;
+ struct ld9040 *lcd = NULL;
+ struct lcd_device *ld = NULL;
+
+ lcd = kzalloc(sizeof(struct ld9040), GFP_KERNEL);
+ if (!lcd)
+ return -ENOMEM;
+
+ /* ld9040 lcd panel uses 3-wire 9bits SPI Mode. */
+ spi->bits_per_word = 9;
+
+ ret = spi_setup(spi);
+ if (ret < 0) {
+ dev_err(&spi->dev, "spi setup failed.\n");
+ goto out_free_lcd;
+ }
+
+ lcd->spi = spi;
+ lcd->dev = &spi->dev;
+
+ lcd->lcd_pd = (struct lcd_platform_data *)spi->dev.platform_data;
+ if (!lcd->lcd_pd) {
+ dev_err(&spi->dev, "platform data is NULL.\n");
+ goto out_free_lcd;
+ }
+
+ ld = lcd_device_register("ld9040", &spi->dev, lcd, &ld9040_lcd_ops);
+ if (IS_ERR(ld)) {
+ ret = PTR_ERR(ld);
+ goto out_free_lcd;
+ }
+
+ lcd->ld = ld;
+
+ /*
+ * if lcd panel was on from bootloader like u-boot then
+ * do not lcd on.
+ */
+ if (!lcd->lcd_pd->lcd_enabled) {
+ /*
+ * if lcd panel was off from bootloader then
+ * current lcd status is powerdown and then
+ * it enables lcd panel.
+ */
+ lcd->power = FB_BLANK_POWERDOWN;
+
+ ld9040_power(lcd, FB_BLANK_UNBLANK);
+ } else
+ lcd->power = FB_BLANK_UNBLANK;
+
+ dev_set_drvdata(&spi->dev, lcd);
+
+ dev_info(&spi->dev, "ld9040 panel driver has been probed.\n");
+ return 0;
+
+out_free_lcd:
+ kfree(lcd);
+ return ret;
+}
+
+static int __devexit ld9040_remove(struct spi_device *spi)
+{
+ struct ld9040 *lcd = dev_get_drvdata(&spi->dev);
+
+ ld9040_power(lcd, FB_BLANK_POWERDOWN);
+ lcd_device_unregister(lcd->ld);
+ kfree(lcd);
+
+ return 0;
+}
+
+#if defined(CONFIG_PM)
+unsigned int beforepower;
+
+static int ld9040_suspend(struct spi_device *spi, pm_message_t mesg)
+{
+ int ret = 0;
+ struct ld9040 *lcd = dev_get_drvdata(&spi->dev);
+
+ dev_dbg(&spi->dev, "lcd->power = %d\n", lcd->power);
+
+ beforepower = lcd->power;
+
+ /*
+ * when lcd panel is suspend, lcd panel becomes off
+ * regardless of status.
+ */
+ ret = ld9040_power(lcd, FB_BLANK_POWERDOWN);
+
+ return ret;
+}
+
+static int ld9040_resume(struct spi_device *spi)
+{
+ int ret = 0;
+ struct ld9040 *lcd = dev_get_drvdata(&spi->dev);
+
+ /*
+ * after suspended, if lcd panel status is FB_BLANK_UNBLANK
+ * (at that time, power is FB_BLANK_UNBLANK) then
+ * it changes that status to FB_BLANK_POWERDOWN to get lcd on.
+ */
+ if (beforepower == FB_BLANK_UNBLANK)
+ lcd->power = FB_BLANK_POWERDOWN;
+
+ dev_dbg(&spi->dev, "power = %d\n", beforepower);
+
+ ret = ld9040_power(lcd, beforepower);
+
+ return ret;
+}
+#else
+#define ld9040_suspend NULL
+#define ld9040_resume NULL
+#endif
+
+/* Power down all displays on reboot, poweroff or halt. */
+static void ld9040_shutdown(struct spi_device *spi)
+{
+ struct ld9040 *lcd = dev_get_drvdata(&spi->dev);
+
+ ld9040_power(lcd, FB_BLANK_POWERDOWN);
+}
+
+static struct spi_driver ld9040_driver = {
+ .driver = {
+ .name = "ld9040",
+ .bus = &spi_bus_type,
+ .owner = THIS_MODULE,
+ },
+ .probe = ld9040_probe,
+ .remove = __devexit_p(ld9040_remove),
+ .shutdown = ld9040_shutdown,
+ .suspend = ld9040_suspend,
+ .resume = ld9040_resume,
+};
+
+static int __init ld9040_init(void)
+{
+ return spi_register_driver(&ld9040_driver);
+}
+
+static void __exit ld9040_exit(void)
+{
+ spi_unregister_driver(&ld9040_driver);
+}
+
+module_init(ld9040_init);
+module_exit(ld9040_exit);
+
+MODULE_AUTHOR("Donghwa Lee <dh09.lee@samsung•com>");
+MODULE_DESCRIPTION("ld9040 LCD Driver");
+MODULE_LICENSE("GPL");
+
--
1.6.0.4
^ permalink raw reply related [flat|nested] 2+ messages in thread
* [PATCH] s3c-fb: Add support ld9040 amoled panel driver
2010-09-09 2:16 [PATCH] s3c-fb: Add support ld9040 amoled panel driver Donghwa Lee
@ 2010-09-09 6:46 ` Marek Szyprowski
0 siblings, 0 replies; 2+ messages in thread
From: Marek Szyprowski @ 2010-09-09 6:46 UTC (permalink / raw)
To: linux-arm-kernel
Hello,
On 2010-09-09 11:16, Donghwa Lee wrote:
> This patch supports ld9040 amoled panel driver.
> It is similar to s6e63m0 panel driver and use spi gpio
> to send panel information.
You should remove the "s3c-fb" prefix from the patch subject, as the
s3c-fb driver has nothing to LD9040 driver. Please use something generic
like 'drivers: lcd:' or so.
> Signed-off-by: Donghwa Lee<dh09.lee@samsung•com>
> Signed-off-by: Inki Dae<inki.dae@samsung•com>
> ---
> drivers/video/backlight/Kconfig | 7 +
> drivers/video/backlight/Makefile | 1 +
> drivers/video/backlight/ld9040.c | 687 ++++++++++++++++++++++++++++++++++++++
> 3 files changed, 695 insertions(+), 0 deletions(-)
> create mode 100644 drivers/video/backlight/ld9040.c
>
> diff --git a/drivers/video/backlight/Kconfig b/drivers/video/backlight/Kconfig
> index e54a337..b8381d0 100644
> --- a/drivers/video/backlight/Kconfig
> +++ b/drivers/video/backlight/Kconfig
> @@ -109,6 +109,13 @@ config LCD_S6E63M0
> If you have an S6E63M0 LCD Panel, say Y to enable its
> LCD control driver.
>
> +config LCD_LD9040
> + bool "LD9040 AMOLED LCD Driver"
> + depends on SPI&& BACKLIGHT_CLASS_DEVICE
> + help
> + If you have an LD9040 LCD Panel, say Y to enable its
> + LCD control driver.
> +
> endif # LCD_CLASS_DEVICE
>
> #
> diff --git a/drivers/video/backlight/Makefile b/drivers/video/backlight/Makefile
> index 44c0f81..a52248e 100644
> --- a/drivers/video/backlight/Makefile
> +++ b/drivers/video/backlight/Makefile
> @@ -12,6 +12,7 @@ obj-$(CONFIG_LCD_VGG2432A4) += vgg2432a4.o
> obj-$(CONFIG_LCD_TDO24M) += tdo24m.o
> obj-$(CONFIG_LCD_TOSA) += tosa_lcd.o
> obj-$(CONFIG_LCD_S6E63M0) += s6e63m0.o
> +obj-$(CONFIG_LCD_S6E63M0) += ld9040.o
You should use the newly defined LCD_LD9040 option in Makefile instead
of hijacking the CONFIG_LCD_S6E63M0.
>
> obj-$(CONFIG_BACKLIGHT_CLASS_DEVICE) += backlight.o
> obj-$(CONFIG_BACKLIGHT_ATMEL_PWM) += atmel-pwm-bl.o
> diff --git a/drivers/video/backlight/ld9040.c b/drivers/video/backlight/ld9040.c
> new file mode 100644
> index 0000000..7a2109f
> --- /dev/null
> +++ b/drivers/video/backlight/ld9040.c
> @@ -0,0 +1,687 @@
> +/*
> + * ld9040 AMOLED LCD panel driver.
> + *
> + * Author: Donghwa Lee<dh09.lee@samsung•com>
> + *
> + * Derived from drivers/video/omap/lcd-apollon.c
> + *
> + * 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.
> + *
> + * 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, write to the Free Software Foundation, Inc.,
> + * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
> + */
> +
> +#include<linux/wait.h>
> +#include<linux/fb.h>
> +#include<linux/delay.h>
> +#include<linux/gpio.h>
> +#include<linux/spi/spi.h>
> +#include<linux/irq.h>
> +#include<linux/interrupt.h>
> +#include<linux/kernel.h>
> +#include<linux/lcd.h>
> +#include<linux/backlight.h>
> +
> +#define SLEEPMSEC 0x1000
> +#define ENDDEF 0x2000
> +#define DEFMASK 0xFF00
> +#define COMMAND_ONLY 0xFE
> +#define DATA_ONLY 0xFF
> +
> +#define POWER_IS_ON(pwr) ((pwr)<= FB_BLANK_NORMAL)
> +
> +struct ld9040 {
> + struct device *dev;
> + struct spi_device *spi;
> + unsigned int power;
> + struct lcd_device *ld;
> + struct lcd_platform_data *lcd_pd;
> +};
> +
> +static const unsigned short SEQ_SWRESET[] = {
> + 0x01, COMMAND_ONLY,
> + ENDDEF, 0x00
> +};
> +
> +static const unsigned short SEQ_USER_SETTING[] = {
> + 0xF0, 0x5A,
> +
> + DATA_ONLY, 0x5A,
> + ENDDEF, 0x00
> +};
> +
> +static const unsigned short SEQ_ELVSS[] = {
> + 0xB1, 0x0B,
> +
> + DATA_ONLY, 0x00,
> + DATA_ONLY, 0x16,
> + ENDDEF, 0x00
> +};
> +
> +static const unsigned short SEQ_GTCON[] = {
> + 0xF7, 0x09,
> +
> + DATA_ONLY, 0x00,
> + DATA_ONLY, 0x00,
> + ENDDEF, 0x00
> +};
> +
> +static const unsigned short SEQ_GAMMA_SET1[] = {
> + 0xF9, 0x18,
> +
> + DATA_ONLY, 0x9A,
> + DATA_ONLY, 0xB0,
> + DATA_ONLY, 0xAB,
> + DATA_ONLY, 0xC4,
> + DATA_ONLY, 0x00,
> + DATA_ONLY, 0xAA,
> + DATA_ONLY, 0x00,
> + DATA_ONLY, 0xA1,
> + DATA_ONLY, 0xB5,
> + DATA_ONLY, 0xB0,
> + DATA_ONLY, 0xC7,
> + DATA_ONLY, 0x00,
> + DATA_ONLY, 0xC5,
> + DATA_ONLY, 0x24,
> + DATA_ONLY, 0xA7,
> + DATA_ONLY, 0xAC,
> + DATA_ONLY, 0x9A,
> + DATA_ONLY, 0xB6,
> + DATA_ONLY, 0x00,
> + DATA_ONLY, 0xE5,
> + ENDDEF, 0x00
> +};
> +
> +static const unsigned short SEQ_GAMMA_CTRL[] = {
> + 0xFB, 0x00,
> +
> + DATA_ONLY, 0x5A,
> + ENDDEF, 0x00
> +};
> +
> +static const unsigned short SEQ_APON[] = {
> + 0xF3, 0x00,
> +
> + DATA_ONLY, 0x00,
> + DATA_ONLY, 0x00,
> + DATA_ONLY, 0x0A,
> + DATA_ONLY, 0x02,
> + ENDDEF, 0x00
> +};
> +
> +static const unsigned short SEQ_DISPCTL[] = {
> + 0xF2, 0x02,
> +
> + DATA_ONLY, 0x03,
> + DATA_ONLY, 0x1C,
> + DATA_ONLY, 0x10,
> + DATA_ONLY, 0x10,
> + ENDDEF, 0x00
> +};
> +
> +static const unsigned short SEQ_SLPOUT[] = {
> + 0x11, COMMAND_ONLY,
> + ENDDEF, 0x00
> +};
> +
> +static const unsigned short SEQ_SLPIN[] = {
> + 0x10, COMMAND_ONLY,
> + ENDDEF, 0x00
> +};
> +
> +static const unsigned short SEQ_DISPON[] = {
> + 0x29, COMMAND_ONLY,
> + ENDDEF, 0x00
> +};
> +
> +static const unsigned short SEQ_DISPOFF[] = {
> + 0x28, COMMAND_ONLY,
> + ENDDEF, 0x00
> +};
> +
> +static const unsigned short SEQ_VCI1_1ST_EN[] = {
> + 0xF3, 0x10,
> +
> + DATA_ONLY, 0x00,
> + DATA_ONLY, 0x00,
> + DATA_ONLY, 0x00,
> + DATA_ONLY, 0x02,
> + ENDDEF, 0x00
> +};
> +
> +static const unsigned short SEQ_VL1_EN[] = {
> + 0xF3, 0x11,
> +
> + DATA_ONLY, 0x00,
> + DATA_ONLY, 0x00,
> + DATA_ONLY, 0x00,
> + DATA_ONLY, 0x02,
> + ENDDEF, 0x00
> +};
> +
> +static const unsigned short SEQ_VL2_EN[] = {
> + 0xF3, 0x13,
> +
> + DATA_ONLY, 0x00,
> + DATA_ONLY, 0x00,
> + DATA_ONLY, 0x00,
> + DATA_ONLY, 0x02,
> + ENDDEF, 0x00
> +};
> +
> +static const unsigned short SEQ_VCI1_2ND_EN[] = {
> + 0xF3, 0x33,
> +
> + DATA_ONLY, 0x00,
> + DATA_ONLY, 0x00,
> + DATA_ONLY, 0x00,
> + DATA_ONLY, 0x02,
> + ENDDEF, 0x00
> +};
> +
> +static const unsigned short SEQ_VL3_EN[] = {
> + 0xF3, 0x37,
> +
> + DATA_ONLY, 0x00,
> + DATA_ONLY, 0x00,
> + DATA_ONLY, 0x00,
> + DATA_ONLY, 0x02,
> + ENDDEF, 0x00
> +};
> +
> +static const unsigned short SEQ_VREG1_AMP_EN[] = {
> + 0xF3, 0x37,
> +
> + DATA_ONLY, 0x01,
> + DATA_ONLY, 0x00,
> + DATA_ONLY, 0x00,
> + DATA_ONLY, 0x02,
> + ENDDEF, 0x00
> +};
> +
> +static const unsigned short SEQ_VGH_AMP_EN[] = {
> + 0xF3, 0x37,
> +
> + DATA_ONLY, 0x11,
> + DATA_ONLY, 0x00,
> + DATA_ONLY, 0x00,
> + DATA_ONLY, 0x02,
> + ENDDEF, 0x00
> +};
> +
> +static const unsigned short SEQ_VGL_AMP_EN[] = {
> + 0xF3, 0x37,
> +
> + DATA_ONLY, 0x31,
> + DATA_ONLY, 0x00,
> + DATA_ONLY, 0x00,
> + DATA_ONLY, 0x02,
> + ENDDEF, 0x00
> +};
> +
> +static const unsigned short SEQ_VMOS_AMP_EN[] = {
> + 0xF3, 0x37,
> +
> + DATA_ONLY, 0xB1,
> + DATA_ONLY, 0x00,
> + DATA_ONLY, 0x00,
> + DATA_ONLY, 0x03,
> + ENDDEF, 0x00
> +};
> +
> +static const unsigned short SEQ_VINT_AMP_EN[] = {
> + 0xF3, 0x37,
> +
> + DATA_ONLY, 0xF1,
> + /* DATA_ONLY, 0x71, VMOS/VBL/VBH not used */
> + DATA_ONLY, 0x00,
> + DATA_ONLY, 0x00,
> + DATA_ONLY, 0x03,
> + /* DATA_ONLY, 0x02, VMOS/VBL/VBH not used */
> + ENDDEF, 0x00
> +};
> +
> +static const unsigned short SEQ_VBH_AMP_EN[] = {
> + 0xF3, 0x37,
> +
> + DATA_ONLY, 0xF9,
> + DATA_ONLY, 0x00,
> + DATA_ONLY, 0x00,
> + DATA_ONLY, 0x03,
> + ENDDEF, 0x00
> +};
> +
> +static const unsigned short SEQ_VBL_AMP_EN[] = {
> + 0xF3, 0x37,
> +
> + DATA_ONLY, 0xFD,
> + DATA_ONLY, 0x00,
> + DATA_ONLY, 0x00,
> + DATA_ONLY, 0x03,
> + ENDDEF, 0x00
> +};
> +
> +static const unsigned short SEQ_GAM_AMP_EN[] = {
> + 0xF3, 0x37,
> +
> + DATA_ONLY, 0xFF,
> + /* DATA_ONLY, 0x73, VMOS/VBL/VBH not used */
> + DATA_ONLY, 0x00,
> + DATA_ONLY, 0x00,
> + DATA_ONLY, 0x03,
> + /* DATA_ONLY, 0x02, VMOS/VBL/VBH not used */
> + ENDDEF, 0x00
> +};
> +
> +static const unsigned short SEQ_SD_AMP_EN[] = {
> + 0xF3, 0x37,
> +
> + DATA_ONLY, 0xFF,
> + /* DATA_ONLY, 0x73, VMOS/VBL/VBH not used */
> + DATA_ONLY, 0x80,
> + DATA_ONLY, 0x00,
> + DATA_ONLY, 0x03,
> + /* DATA_ONLY, 0x02, VMOS/VBL/VBH not used */
> + ENDDEF, 0x00
> +};
> +
> +static const unsigned short SEQ_GLS_EN[] = {
> + 0xF3, 0x37,
> +
> + DATA_ONLY, 0xFF,
> + /* DATA_ONLY, 0x73, VMOS/VBL/VBH not used */
> + DATA_ONLY, 0x81,
> + DATA_ONLY, 0x00,
> + DATA_ONLY, 0x03,
> + /* DATA_ONLY, 0x02, VMOS/VBL/VBH not used */
> + ENDDEF, 0x00
> +};
> +
> +static const unsigned short SEQ_ELS_EN[] = {
> + 0xF3, 0x37,
> +
> + DATA_ONLY, 0xFF,
> + /* DATA_ONLY, 0x73, VMOS/VBL/VBH not used */
> + DATA_ONLY, 0x83,
> + DATA_ONLY, 0x00,
> + DATA_ONLY, 0x03,
> + /* DATA_ONLY, 0x02, VMOS/VBL/VBH not used */
> + ENDDEF, 0x00
> +};
> +
> +static const unsigned short SEQ_EL_ON[] = {
> + 0xF3, 0x37,
> +
> + DATA_ONLY, 0xFF,
> + /* DATA_ONLY, 0x73, VMOS/VBL/VBH not used */
> + DATA_ONLY, 0x87,
> + DATA_ONLY, 0x00,
> + DATA_ONLY, 0x03,
> + /* DATA_ONLY, 0x02, VMOS/VBL/VBH not used */
> + ENDDEF, 0x00
> +};
> +
> +static int ld9040_spi_write_byte(struct ld9040 *lcd, int addr, int data)
> +{
> + u16 buf[1];
> + struct spi_message msg;
> +
> + struct spi_transfer xfer = {
> + .len = 2,
> + .tx_buf = buf,
> + };
> +
> + buf[0] = (addr<< 8) | data;
> +
> + spi_message_init(&msg);
> + spi_message_add_tail(&xfer,&msg);
> +
> + return spi_sync(lcd->spi,&msg);
> +}
> +
> +static int ld9040_spi_write(struct ld9040 *lcd, unsigned char address,
> + unsigned char command)
> +{
> + int ret = 0;
> +
> + if (address != DATA_ONLY)
> + ret = ld9040_spi_write_byte(lcd, 0x0, address);
> + if (command != COMMAND_ONLY)
> + ret = ld9040_spi_write_byte(lcd, 0x1, command);
> +
> + return ret;
> +}
> +
> +static int ld9040_panel_send_sequence(struct ld9040 *lcd,
> + const unsigned short *wbuf)
> +{
> + int ret = 0, i = 0;
> +
> + while ((wbuf[i]& DEFMASK) != ENDDEF) {
> + if ((wbuf[i]& DEFMASK) != SLEEPMSEC) {
> + ret = ld9040_spi_write(lcd, wbuf[i], wbuf[i+1]);
> + if (ret)
> + break;
> + } else
> + udelay(wbuf[i+1]*1000);
> + i += 2;
> + }
> +
> + return ret;
> +}
> +
> +static int ld9040_ldi_init(struct ld9040 *lcd)
> +{
> + int ret, i;
> + const unsigned short *init_seq[] = {
> + SEQ_USER_SETTING,
> + SEQ_ELVSS,
> + SEQ_GTCON,
> + SEQ_GAMMA_SET1,
> + SEQ_GAMMA_CTRL,
> + SEQ_SLPOUT,
> + };
> +
> + for (i = 0; i< ARRAY_SIZE(init_seq); i++) {
> + ret = ld9040_panel_send_sequence(lcd, init_seq[i]);
> + mdelay(5);
> + if (ret)
> + break;
> + }
> +
> + return ret;
> +}
> +
> +static int ld9040_ldi_enable(struct ld9040 *lcd)
> +{
> + int ret = 0;
> +
> + ret = ld9040_panel_send_sequence(lcd, SEQ_DISPON);
> +
> + return ret;
> +}
> +
> +static int ld9040_ldi_disable(struct ld9040 *lcd)
> +{
> + int ret;
> +
> + ret = ld9040_panel_send_sequence(lcd, SEQ_DISPOFF);
> +
> + return ret;
> +}
> +
> +static int ld9040_power_on(struct ld9040 *lcd)
> +{
> + int ret = 0;
> + struct lcd_platform_data *pd = NULL;
> + pd = lcd->lcd_pd;
> + if (!pd) {
> + dev_err(lcd->dev, "platform data is NULL.\n");
> + return -EFAULT;
> + }
> +
> + if (!pd->power_on) {
> + dev_err(lcd->dev, "power_on is NULL.\n");
> + return -EFAULT;
> + } else {
> + pd->power_on(lcd->ld, 1);
> + mdelay(pd->power_on_delay);
> + }
> +
> + if (!pd->reset) {
> + dev_err(lcd->dev, "reset is NULL.\n");
> + return -EFAULT;
> + } else {
> + pd->reset(lcd->ld);
> + mdelay(pd->reset_delay);
> + }
> +
> + ret = ld9040_ldi_init(lcd);
> + if (ret) {
> + dev_err(lcd->dev, "failed to initialize ldi.\n");
> + return ret;
> + }
> +
> + ret = ld9040_ldi_enable(lcd);
> + if (ret) {
> + dev_err(lcd->dev, "failed to enable ldi.\n");
> + return ret;
> + }
> +
> + return 0;
> +}
> +
> +static int ld9040_power_off(struct ld9040 *lcd)
> +{
> + int ret = 0;
> + struct lcd_platform_data *pd = NULL;
> +
> + pd = lcd->lcd_pd;
> + if (!pd) {
> + dev_err(lcd->dev, "platform data is NULL.\n");
> + return -EFAULT;
> + }
> +
> + ret = ld9040_ldi_disable(lcd);
> + if (ret) {
> + dev_err(lcd->dev, "lcd setting failed.\n");
> + return -EIO;
> + }
> +
> + mdelay(pd->power_off_delay);
> +
> + if (!pd->power_on) {
> + dev_err(lcd->dev, "power_on is NULL.\n");
> + return -EFAULT;
> + } else
> + pd->power_on(lcd->ld, 0);
> +
> + return 0;
> +}
> +
> +static int ld9040_power(struct ld9040 *lcd, int power)
> +{
> + int ret = 0;
> +
> + if (POWER_IS_ON(power)&& !POWER_IS_ON(lcd->power))
> + ret = ld9040_power_on(lcd);
> + else if (!POWER_IS_ON(power)&& POWER_IS_ON(lcd->power))
> + ret = ld9040_power_off(lcd);
> +
> + if (!ret)
> + lcd->power = power;
> +
> + return ret;
> +}
> +
> +static int ld9040_set_power(struct lcd_device *ld, int power)
> +{
> + struct ld9040 *lcd = lcd_get_data(ld);
> +
> + if (power != FB_BLANK_UNBLANK&& power != FB_BLANK_POWERDOWN&&
> + power != FB_BLANK_NORMAL) {
> + dev_err(lcd->dev, "power value should be 0, 1 or 4.\n");
> + return -EINVAL;
> + }
> +
> + return ld9040_power(lcd, power);
> +}
> +
> +static int ld9040_get_power(struct lcd_device *ld)
> +{
> + struct ld9040 *lcd = lcd_get_data(ld);
> +
> + return lcd->power;
> +}
> +
> +static struct lcd_ops ld9040_lcd_ops = {
> + .set_power = ld9040_set_power,
> + .get_power = ld9040_get_power,
> +};
> +
> +
> +static int __init ld9040_probe(struct spi_device *spi)
> +{
> + int ret = 0;
> + struct ld9040 *lcd = NULL;
> + struct lcd_device *ld = NULL;
> +
> + lcd = kzalloc(sizeof(struct ld9040), GFP_KERNEL);
> + if (!lcd)
> + return -ENOMEM;
> +
> + /* ld9040 lcd panel uses 3-wire 9bits SPI Mode. */
> + spi->bits_per_word = 9;
> +
> + ret = spi_setup(spi);
> + if (ret< 0) {
> + dev_err(&spi->dev, "spi setup failed.\n");
> + goto out_free_lcd;
> + }
> +
> + lcd->spi = spi;
> + lcd->dev =&spi->dev;
> +
> + lcd->lcd_pd = (struct lcd_platform_data *)spi->dev.platform_data;
> + if (!lcd->lcd_pd) {
> + dev_err(&spi->dev, "platform data is NULL.\n");
> + goto out_free_lcd;
> + }
> +
> + ld = lcd_device_register("ld9040",&spi->dev, lcd,&ld9040_lcd_ops);
Please be a bit more consistent in the coding style. There should be a
space after a comma. This applies to the above line and the few other.
> + if (IS_ERR(ld)) {
> + ret = PTR_ERR(ld);
> + goto out_free_lcd;
> + }
> +
> + lcd->ld = ld;
> +
> + /*
> + * if lcd panel was on from bootloader like u-boot then
> + * do not lcd on.
> + */
> + if (!lcd->lcd_pd->lcd_enabled) {
> + /*
> + * if lcd panel was off from bootloader then
> + * current lcd status is powerdown and then
> + * it enables lcd panel.
> + */
> + lcd->power = FB_BLANK_POWERDOWN;
> +
> + ld9040_power(lcd, FB_BLANK_UNBLANK);
> + } else
> + lcd->power = FB_BLANK_UNBLANK;
> +
> + dev_set_drvdata(&spi->dev, lcd);
> +
> + dev_info(&spi->dev, "ld9040 panel driver has been probed.\n");
> + return 0;
> +
> +out_free_lcd:
> + kfree(lcd);
> + return ret;
> +}
> +
> +static int __devexit ld9040_remove(struct spi_device *spi)
> +{
> + struct ld9040 *lcd = dev_get_drvdata(&spi->dev);
> +
> + ld9040_power(lcd, FB_BLANK_POWERDOWN);
> + lcd_device_unregister(lcd->ld);
> + kfree(lcd);
> +
> + return 0;
> +}
> +
> +#if defined(CONFIG_PM)
> +unsigned int beforepower;
> +
> +static int ld9040_suspend(struct spi_device *spi, pm_message_t mesg)
> +{
> + int ret = 0;
> + struct ld9040 *lcd = dev_get_drvdata(&spi->dev);
> +
> + dev_dbg(&spi->dev, "lcd->power = %d\n", lcd->power);
> +
> + beforepower = lcd->power;
> +
> + /*
> + * when lcd panel is suspend, lcd panel becomes off
> + * regardless of status.
> + */
> + ret = ld9040_power(lcd, FB_BLANK_POWERDOWN);
> +
> + return ret;
> +}
> +
> +static int ld9040_resume(struct spi_device *spi)
> +{
> + int ret = 0;
> + struct ld9040 *lcd = dev_get_drvdata(&spi->dev);
> +
> + /*
> + * after suspended, if lcd panel status is FB_BLANK_UNBLANK
> + * (at that time, power is FB_BLANK_UNBLANK) then
> + * it changes that status to FB_BLANK_POWERDOWN to get lcd on.
> + */
> + if (beforepower == FB_BLANK_UNBLANK)
> + lcd->power = FB_BLANK_POWERDOWN;
> +
> + dev_dbg(&spi->dev, "power = %d\n", beforepower);
> +
> + ret = ld9040_power(lcd, beforepower);
> +
> + return ret;
> +}
> +#else
> +#define ld9040_suspend NULL
> +#define ld9040_resume NULL
> +#endif
> +
> +/* Power down all displays on reboot, poweroff or halt. */
> +static void ld9040_shutdown(struct spi_device *spi)
> +{
> + struct ld9040 *lcd = dev_get_drvdata(&spi->dev);
> +
> + ld9040_power(lcd, FB_BLANK_POWERDOWN);
> +}
> +
> +static struct spi_driver ld9040_driver = {
> + .driver = {
> + .name = "ld9040",
> + .bus =&spi_bus_type,
> + .owner = THIS_MODULE,
> + },
> + .probe = ld9040_probe,
> + .remove = __devexit_p(ld9040_remove),
> + .shutdown = ld9040_shutdown,
> + .suspend = ld9040_suspend,
> + .resume = ld9040_resume,
> +};
> +
> +static int __init ld9040_init(void)
> +{
> + return spi_register_driver(&ld9040_driver);
> +}
> +
> +static void __exit ld9040_exit(void)
> +{
> + spi_unregister_driver(&ld9040_driver);
> +}
> +
> +module_init(ld9040_init);
> +module_exit(ld9040_exit);
> +
> +MODULE_AUTHOR("Donghwa Lee<dh09.lee@samsung•com>");
> +MODULE_DESCRIPTION("ld9040 LCD Driver");
> +MODULE_LICENSE("GPL");
> +
Best regards
--
Marek Szyprowski
Samsung Poland R&D Center
^ permalink raw reply [flat|nested] 2+ messages in thread
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2010-09-09 2:16 [PATCH] s3c-fb: Add support ld9040 amoled panel driver Donghwa Lee
2010-09-09 6:46 ` Marek Szyprowski
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