From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751604Ab2LQIW2 (ORCPT ); Mon, 17 Dec 2012 03:22:28 -0500 Received: from mailout2.samsung.com ([203.254.224.25]:18942 "EHLO mailout2.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750813Ab2LQIW1 (ORCPT ); Mon, 17 Dec 2012 03:22:27 -0500 X-AuditID: cbfee61a-b7fa66d0000004cf-7c-50ced63d9c8c From: Jingoo Han To: "'Andrew Morton'" , "'LKML'" Cc: "'Richard Purdie'" , "'Jingoo Han'" Subject: PATCH] backlight: add lms501kf03 LCD driver Date: Mon, 17 Dec 2012 17:22:21 +0900 Message-id: <000001cddc2f$a2b2e8a0$e818b9e0$%han@samsung.com> MIME-version: 1.0 Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 7bit X-Mailer: Microsoft Office Outlook 12.0 Thread-index: Ac3cL6I27sdvnDOiQ2SfiarqUEmVIw== Content-language: ko DLP-Filter: Pass X-MTR: 20000000000000000@CPGS X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFlrNIsWRmVeSWpSXmKPExsVy+t8zA13ba+cCDOYuNLW4vGsOmwOjx+dN cgGMUVw2Kak5mWWpRfp2CVwZD+asZiqYlFAx9cVOlgbG7b5djJwcEgImEp/erGWBsMUkLtxb z9bFyMUhJLCMUWLR0WWMMEV/14EUgSQWMUpcvHOJGcKZzSTxaNYdsCo2ATWJL18Os4PYIgIR Es0zZgEVcXAwC/hIbJ6lCWIKAw06sa4SpIJFQFVi4bY1LCBhXgFbieev5UDCvAKCEj8m3wO7 h1lAS2L9zuNMELa8xOY1b8EGSgioSzz6qwuxR09i4Yy5jBAlIhL7XrxjhJguIPFt8iEWiHJZ iU0HmCEeaWeXmLREBMKWlDi44gbLBEaxWUgWz0KyeBaSxbOQbFjAyLKKUTS1ILmgOCk911Cv ODG3uDQvXS85P3cTIyRGpHYwrmywOMQowMGoxMNrlHouQIg1say4MvcQowQHs5IIL787UIg3 JbGyKrUoP76oNCe1+BCjD9DhE5mlRJPzgfGbVxJvaGxsYmZiamJuaWpuikNYSZy32SMlQEgg PbEkNTs1tSC1CGYcEwenVAPjesfTSvt21K7TcX78zEFxzrkrrCELdQ6VfjpSu9YuYF7+T0Z+ xxlseab7JnXOu7muzdl7U4n/AtWyWL8sP6aa23bGb+LDpn/+21e5sfV5qn3KibiMia+MVHub XD/41rKFv1euCbnKvXl6lLmY/e9lrnezLv2Jkb0Y9I3d9/yG6bv+CyVe/1SpxFKckWioxVxU nAgAGucMjb4CAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFrrNIsWRmVeSWpSXmKPExsVy+t9jAV3ba+cCDL4d0rO4vGsOmwOjx+dN cgGMUQ2MNhmpiSmpRQqpecn5KZl56bZK3sHxzvGmZgaGuoaWFuZKCnmJuam2Si4+AbpumTlA U5UUyhJzSoFCAYnFxUr6dpgmhIa46VrANEbo+oYEwfUYGaCBhHWMGQ/mrGYqmJRQMfXFTpYG xu2+XYycHBICJhJ/161lgbDFJC7cW8/WxcjFISSwiFHi4p1LzBDObCaJR7PuMIJUsQmoSXz5 cpgdxBYRiJBonjELqIiDg1nAR2LzLE0QUxho6Il1lSAVLAKqEgu3rWEBCfMK2Eo8fy0HEuYV EJT4Mfke2FpmAS2J9TuPM0HY8hKb17wFGyghoC7x6K8uxB49iYUz5jJClIhI7HvxjnECo8As JJNmIZk0C8mkWUhaFjCyrGIUTS1ILihOSs811CtOzC0uzUvXS87P3cQIjsFnUjsYVzZYHGIU 4GBU4uE1Sj0XIMSaWFZcmXuIUYKDWUmEl98dKMSbklhZlVqUH19UmpNafIjRB+jPicxSosn5 wPSQVxJvaGxiZmRpZGZhZGJujkNYSZy32SMlQEggPbEkNTs1tSC1CGYcEwenVAOjtMgPowDu BR6/b9U+rBNIXXrvydL3DupWv48GXG05qBO+tNpTmdVC0Kf7A+etzM/7RF5VZCptVumJeHBQ tiNkatbeWDaBn0cmLos8uqj0TtSVh0pMWvqPtdP2G3Gtl2nR/Gn1bBtD4/y4uE2/6qxr/v68 ybxR/O7NYlZ/CSbzuX0y7AosvxWUWIozEg21mIuKEwF8YaUM7gIAAA== X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add the lms501kf03 LCD panel driver. The lms501kf03 LCD panel (800 x 480) driver uses 3-wired SPI inteface. Signed-off-by: Ilho Lee Signed-off-by: Jingoo Han --- drivers/video/backlight/Kconfig | 8 + drivers/video/backlight/Makefile | 1 + drivers/video/backlight/lms501kf03.c | 448 ++++++++++++++++++++++++++++++++++ 3 files changed, 457 insertions(+), 0 deletions(-) create mode 100644 drivers/video/backlight/lms501kf03.c diff --git a/drivers/video/backlight/Kconfig b/drivers/video/backlight/Kconfig index 765a945..081d6cf 100644 --- a/drivers/video/backlight/Kconfig +++ b/drivers/video/backlight/Kconfig @@ -126,6 +126,14 @@ config LCD_AMS369FG06 If you have an AMS369FG06 AMOLED Panel, say Y to enable its LCD control driver. +config LCD_LMS501KF03 + tristate "LMS501KF03 LCD Driver" + depends on SPI + default n + help + If you have an LMS501KF03 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 e7ce729..d02a728 100644 --- a/drivers/video/backlight/Makefile +++ b/drivers/video/backlight/Makefile @@ -14,6 +14,7 @@ obj-$(CONFIG_LCD_TOSA) += tosa_lcd.o obj-$(CONFIG_LCD_S6E63M0) += s6e63m0.o obj-$(CONFIG_LCD_LD9040) += ld9040.o obj-$(CONFIG_LCD_AMS369FG06) += ams369fg06.o +obj-$(CONFIG_LCD_LMS501KF03) += lms501kf03.o obj-$(CONFIG_BACKLIGHT_CLASS_DEVICE) += backlight.o obj-$(CONFIG_BACKLIGHT_ATMEL_PWM) += atmel-pwm-bl.o diff --git a/drivers/video/backlight/lms501kf03.c b/drivers/video/backlight/lms501kf03.c new file mode 100644 index 0000000..c30ea53 --- /dev/null +++ b/drivers/video/backlight/lms501kf03.c @@ -0,0 +1,448 @@ +/* + * lms501kf03 TFT LCD panel driver. + * + * Copyright (c) 2012 Samsung Electronics Co., Ltd. + * Author: Jingoo Han + * + * 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 +#include +#include +#include +#include +#include +#include +#include + +#define ENDDEF 0xff00 +#define COMMAND_ONLY 0x00 +#define DATA_ONLY 0x01 + +struct lms501kf03 { + 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_password[] = { + 0xb9, 0xff, 0x83, 0x69, + ENDDEF +}; + +static const unsigned short seq_power[] = { + 0xb1, 0x01, 0x00, 0x34, 0x06, 0x00, 0x14, 0x14, 0x20, 0x28, + 0x12, 0x12, 0x17, 0x0a, 0x01, 0xe6, 0xe6, 0xe6, 0xe6, 0xe6, + ENDDEF +}; + +static const unsigned short seq_display[] = { + 0xb2, 0x00, 0x2b, 0x03, 0x03, 0x70, 0x00, 0xff, 0x00, 0x00, + 0x00, 0x00, 0x03, 0x03, 0x00, 0x01, + ENDDEF +}; + +static const unsigned short seq_rgb_if[] = { + 0xb3, 0x09, + ENDDEF +}; + +static const unsigned short seq_display_inv[] = { + 0xb4, 0x01, 0x08, 0x77, 0x0e, 0x06, + ENDDEF +}; + +static const unsigned short seq_vcom[] = { + 0xb6, 0x4c, 0x2e, + ENDDEF +}; + +static const unsigned short seq_gate[] = { + 0xd5, 0x00, 0x05, 0x03, 0x29, 0x01, 0x07, 0x17, 0x68, 0x13, + 0x37, 0x20, 0x31, 0x8a, 0x46, 0x9b, 0x57, 0x13, 0x02, 0x75, + 0xb9, 0x64, 0xa8, 0x07, 0x0f, 0x04, 0x07, + ENDDEF +}; + +static const unsigned short seq_panel[] = { + 0xcc, 0x02, + ENDDEF +}; + +static const unsigned short seq_col_mod[] = { + 0x3a, 0x77, + ENDDEF +}; + +static const unsigned short seq_w_gamma[] = { + 0xe0, 0x00, 0x04, 0x09, 0x0f, 0x1f, 0x3f, 0x1f, 0x2f, 0x0a, + 0x0f, 0x10, 0x16, 0x18, 0x16, 0x17, 0x0d, 0x15, 0x00, 0x04, + 0x09, 0x0f, 0x38, 0x3f, 0x20, 0x39, 0x0a, 0x0f, 0x10, 0x16, + 0x18, 0x16, 0x17, 0x0d, 0x15, + ENDDEF +}; + +static const unsigned short seq_rgb_gamma[] = { + 0xc1, 0x01, 0x03, 0x07, 0x0f, 0x1a, 0x22, 0x2c, 0x33, 0x3c, + 0x46, 0x4f, 0x58, 0x60, 0x69, 0x71, 0x79, 0x82, 0x89, 0x92, + 0x9a, 0xa1, 0xa9, 0xb1, 0xb9, 0xc1, 0xc9, 0xcf, 0xd6, 0xde, + 0xe5, 0xec, 0xf3, 0xf9, 0xff, 0xdd, 0x39, 0x07, 0x1c, 0xcb, + 0xab, 0x5f, 0x49, 0x80, 0x03, 0x07, 0x0f, 0x19, 0x20, 0x2a, + 0x31, 0x39, 0x42, 0x4b, 0x53, 0x5b, 0x63, 0x6b, 0x73, 0x7b, + 0x83, 0x8a, 0x92, 0x9b, 0xa2, 0xaa, 0xb2, 0xba, 0xc2, 0xca, + 0xd0, 0xd8, 0xe1, 0xe8, 0xf0, 0xf8, 0xff, 0xf7, 0xd8, 0xbe, + 0xa7, 0x39, 0x40, 0x85, 0x8c, 0xc0, 0x04, 0x07, 0x0c, 0x17, + 0x1c, 0x23, 0x2b, 0x34, 0x3b, 0x43, 0x4c, 0x54, 0x5b, 0x63, + 0x6a, 0x73, 0x7a, 0x82, 0x8a, 0x91, 0x98, 0xa1, 0xa8, 0xb0, + 0xb7, 0xc1, 0xc9, 0xcf, 0xd9, 0xe3, 0xea, 0xf4, 0xff, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + ENDDEF +}; + +static const unsigned short seq_up_dn[] = { + 0x36, 0x10, + ENDDEF +}; + +static const unsigned short seq_sleep_in[] = { + 0x10, + ENDDEF +}; + +static const unsigned short seq_sleep_out[] = { + 0x11, + ENDDEF +}; + +static const unsigned short seq_display_on[] = { + 0x29, + ENDDEF +}; + +static const unsigned short seq_display_off[] = { + 0x10, + ENDDEF +}; + +static int lms501kf03_spi_write_byte(struct lms501kf03 *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 lms501kf03_spi_write(struct lms501kf03 *lcd, unsigned char address, + unsigned char command) +{ + int ret; + + ret = lms501kf03_spi_write_byte(lcd, address, command); + + return ret; +} + +static int lms501kf03_panel_send_sequence(struct lms501kf03 *lcd, + const unsigned short *wbuf) +{ + int ret = 0, i = 0; + + while (wbuf[i] != ENDDEF) { + if (i == 0) + ret = lms501kf03_spi_write(lcd, COMMAND_ONLY, wbuf[i]); + else + ret = lms501kf03_spi_write(lcd, DATA_ONLY, wbuf[i]); + if (ret) + break; + i += 1; + } + + return ret; +} + +static int lms501kf03_ldi_init(struct lms501kf03 *lcd) +{ + int ret, i; + static const unsigned short *init_seq[] = { + seq_password, + seq_power, + seq_display, + seq_rgb_if, + seq_display_inv, + seq_vcom, + seq_gate, + seq_panel, + seq_col_mod, + seq_w_gamma, + seq_rgb_gamma, + seq_sleep_out, + }; + + for (i = 0; i < ARRAY_SIZE(init_seq); i++) { + ret = lms501kf03_panel_send_sequence(lcd, init_seq[i]); + if (ret) + break; + } + /* according to the datasheet, 120ms delay time is required. */ + msleep(120); + + return ret; +} + +static int lms501kf03_ldi_enable(struct lms501kf03 *lcd) +{ + return lms501kf03_panel_send_sequence(lcd, seq_display_on); +} + +static int lms501kf03_ldi_disable(struct lms501kf03 *lcd) +{ + return lms501kf03_panel_send_sequence(lcd, seq_display_off); +} + +static int lms501kf03_power_is_on(int power) +{ + return (power) <= FB_BLANK_NORMAL; +} + +static int lms501kf03_power_on(struct lms501kf03 *lcd) +{ + int ret = 0; + struct lcd_platform_data *pd; + + pd = lcd->lcd_pd; + + if (!pd->power_on) { + dev_err(lcd->dev, "power_on is NULL.\n"); + return -EFAULT; + } else { + pd->power_on(lcd->ld, 1); + msleep(pd->power_on_delay); + } + + if (!pd->reset) { + dev_err(lcd->dev, "reset is NULL.\n"); + return -EFAULT; + } else { + pd->reset(lcd->ld); + msleep(pd->reset_delay); + } + + ret = lms501kf03_ldi_init(lcd); + if (ret) { + dev_err(lcd->dev, "failed to initialize ldi.\n"); + return ret; + } + + ret = lms501kf03_ldi_enable(lcd); + if (ret) { + dev_err(lcd->dev, "failed to enable ldi.\n"); + return ret; + } + + return 0; +} + +static int lms501kf03_power_off(struct lms501kf03 *lcd) +{ + int ret = 0; + struct lcd_platform_data *pd; + + pd = lcd->lcd_pd; + + ret = lms501kf03_ldi_disable(lcd); + if (ret) { + dev_err(lcd->dev, "lcd setting failed.\n"); + return -EIO; + } + + msleep(pd->power_off_delay); + + pd->power_on(lcd->ld, 0); + + return 0; +} + +static int lms501kf03_power(struct lms501kf03 *lcd, int power) +{ + int ret = 0; + + if (lms501kf03_power_is_on(power) && + !lms501kf03_power_is_on(lcd->power)) + ret = lms501kf03_power_on(lcd); + else if (!lms501kf03_power_is_on(power) && + lms501kf03_power_is_on(lcd->power)) + ret = lms501kf03_power_off(lcd); + + if (!ret) + lcd->power = power; + + return ret; +} + +static int lms501kf03_get_power(struct lcd_device *ld) +{ + struct lms501kf03 *lcd = lcd_get_data(ld); + + return lcd->power; +} + +static int lms501kf03_set_power(struct lcd_device *ld, int power) +{ + struct lms501kf03 *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 lms501kf03_power(lcd, power); +} + +static struct lcd_ops lms501kf03_lcd_ops = { + .get_power = lms501kf03_get_power, + .set_power = lms501kf03_set_power, +}; + +static int lms501kf03_probe(struct spi_device *spi) +{ + struct lms501kf03 *lcd = NULL; + struct lcd_device *ld = NULL; + int ret = 0; + + lcd = devm_kzalloc(&spi->dev, sizeof(struct lms501kf03), GFP_KERNEL); + if (!lcd) + return -ENOMEM; + + /* lms501kf03 lcd panel uses 3-wire 9-bit SPI Mode. */ + spi->bits_per_word = 9; + + ret = spi_setup(spi); + if (ret < 0) { + dev_err(&spi->dev, "spi setup failed.\n"); + return ret; + } + + lcd->spi = spi; + lcd->dev = &spi->dev; + + lcd->lcd_pd = spi->dev.platform_data; + if (!lcd->lcd_pd) { + dev_err(&spi->dev, "platform data is NULL\n"); + return -EFAULT; + } + + ld = lcd_device_register("lms501kf03", &spi->dev, lcd, + &lms501kf03_lcd_ops); + if (IS_ERR(ld)) + return PTR_ERR(ld); + + lcd->ld = ld; + + 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; + + lms501kf03_power(lcd, FB_BLANK_UNBLANK); + } else { + lcd->power = FB_BLANK_UNBLANK; + } + + dev_set_drvdata(&spi->dev, lcd); + + dev_info(&spi->dev, "lms501kf03 panel driver has been probed.\n"); + + return 0; +} + +static int lms501kf03_remove(struct spi_device *spi) +{ + struct lms501kf03 *lcd = dev_get_drvdata(&spi->dev); + + lms501kf03_power(lcd, FB_BLANK_POWERDOWN); + lcd_device_unregister(lcd->ld); + + return 0; +} + +#if defined(CONFIG_PM) +static unsigned int before_power; + +static int lms501kf03_suspend(struct spi_device *spi, pm_message_t mesg) +{ + int ret = 0; + struct lms501kf03 *lcd = dev_get_drvdata(&spi->dev); + + dev_dbg(&spi->dev, "lcd->power = %d\n", lcd->power); + + before_power = lcd->power; + + /* + * when lcd panel is suspend, lcd panel becomes off + * regardless of status. + */ + ret = lms501kf03_power(lcd, FB_BLANK_POWERDOWN); + + return ret; +} + +static int lms501kf03_resume(struct spi_device *spi) +{ + int ret = 0; + struct lms501kf03 *lcd = dev_get_drvdata(&spi->dev); + + lcd->power = FB_BLANK_POWERDOWN; + + ret = lms501kf03_power(lcd, FB_BLANK_UNBLANK); + + return ret; +} +#else +#define lms501kf03_suspend NULL +#define lms501kf03_resume NULL +#endif + +void lms501kf03_shutdown(struct spi_device *spi) +{ + struct lms501kf03 *lcd = dev_get_drvdata(&spi->dev); + + lms501kf03_power(lcd, FB_BLANK_POWERDOWN); +} + +static struct spi_driver lms501kf03_driver = { + .driver = { + .name = "lms501kf03", + .owner = THIS_MODULE, + }, + .probe = lms501kf03_probe, + .remove = lms501kf03_remove, + .shutdown = lms501kf03_shutdown, + .suspend = lms501kf03_suspend, + .resume = lms501kf03_resume, +}; + +module_spi_driver(lms501kf03_driver); + +MODULE_AUTHOR("Jingoo Han "); +MODULE_DESCRIPTION("lms501kf03 LCD Driver"); +MODULE_LICENSE("GPL"); -- 1.7.2.5