From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wu Zhangjin Subject: Re: [PATCH v7 6/8] Loongson: YeeLoong: add video output driver Date: Tue, 08 Dec 2009 14:54:08 +0800 Message-ID: <1260255248.3315.28.camel@falcon.domain.org> References: <5fd87c1f64a3c6d3e51fc6b0224cc1be3cb0d9d5.1259932036.git.wuzhangjin@gmail.com> Reply-To: wuzhangjin@gmail.com Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:subject:from:reply-to:to:cc :in-reply-to:references:content-type:organization:date:message-id :mime-version:x-mailer:content-transfer-encoding; bh=ERSqZNqGRLDEztAuCsjgwAa6Elbvg8DH51MUNB+ANCE=; b=x0RKevPUTEstUql19qwS1uA1FmTrAag64MkfZ5NGY7L24k70mSrR1LhmVNmE9gVLia ZLUt7Hwa1oBBEMfVfYhaOv/3gjlyWLWhbj0ofJXaSv4ejDLOniYcezqgxqlNhSVsnArx gjtrxzIes+V8cmTCQZx4HxAB+y7Dz+I+6ctEY= In-Reply-To: <5fd87c1f64a3c6d3e51fc6b0224cc1be3cb0d9d5.1259932036.git.wuzhangjin@gmail.com> Sender: linux-laptop-owner@vger.kernel.org List-ID: Content-Type: text/plain; charset="us-ascii" To: Ralf Baechle Cc: akpm@linux-foundation.org, linux-mips@linux-mips.org, linux-kernel@vger.kernel.org, Dmitry Torokhov , Pavel Machek , "Rafael J. Wysocki" , zhangfx@lemote.com, linux-laptop@vger.kernel.org, luming.yu@intel.com Hi, Pavel Can I get your Acked-by: for this patch? Thanks! Wu Zhangjin On Fri, 2009-12-04 at 21:36 +0800, Wu Zhangjin wrote: > From: Wu Zhangjin > > This patch adds Video Output Driver, it provides standard > interface(/sys/class/video_output) to turn on/off the video output of > LCD, CRT. > > Signed-off-by: Wu Zhangjin > --- > drivers/platform/mips/Kconfig | 1 + > drivers/platform/mips/yeeloong_laptop.c | 147 +++++++++++++++++++++++++++++++ > 2 files changed, 148 insertions(+), 0 deletions(-) > > diff --git a/drivers/platform/mips/Kconfig b/drivers/platform/mips/Kconfig > index 9c8385c..4a89c01 100644 > --- a/drivers/platform/mips/Kconfig > +++ b/drivers/platform/mips/Kconfig > @@ -21,6 +21,7 @@ config LEMOTE_YEELOONG2F > select SYS_SUPPORTS_APM_EMULATION > select APM_EMULATION > select HWMON > + select VIDEO_OUTPUT_CONTROL > default m > help > YeeLoong netbook is a mini laptop made by Lemote, which is basically > diff --git a/drivers/platform/mips/yeeloong_laptop.c b/drivers/platform/mips/yeeloong_laptop.c > index 644aaa7..8378926 100644 > --- a/drivers/platform/mips/yeeloong_laptop.c > +++ b/drivers/platform/mips/yeeloong_laptop.c > @@ -16,6 +16,7 @@ > #include /* for battery subdriver */ > #include /* for hwmon subdriver */ > #include > +#include /* for video output subdriver */ > > #include > > @@ -397,6 +398,144 @@ static void yeeloong_hwmon_exit(void) > } > } > > +/* video output subdriver */ > + > +static int lcd_video_output_get(struct output_device *od) > +{ > + return ec_read(REG_DISPLAY_LCD); > +} > + > +static int lcd_video_output_set(struct output_device *od) > +{ > + int value; > + unsigned long status; > + > + status = !!od->request_state; > + > + if (status == BIT_DISPLAY_LCD_ON) { > + /* Turn on LCD */ > + outb(0x31, 0x3c4); > + value = inb(0x3c5); > + value = (value & 0xf8) | 0x03; > + outb(0x31, 0x3c4); > + outb(value, 0x3c5); > + /* Turn on backlight */ > + ec_write(REG_BACKLIGHT_CTRL, BIT_BACKLIGHT_ON); > + } else { > + /* Turn off backlight */ > + ec_write(REG_BACKLIGHT_CTRL, BIT_BACKLIGHT_OFF); > + /* Turn off LCD */ > + outb(0x31, 0x3c4); > + value = inb(0x3c5); > + value = (value & 0xf8) | 0x02; > + outb(0x31, 0x3c4); > + outb(value, 0x3c5); > + } > + > + return 0; > +} > + > +static struct output_properties lcd_output_properties = { > + .set_state = lcd_video_output_set, > + .get_status = lcd_video_output_get, > +}; > + > +static int crt_video_output_get(struct output_device *od) > +{ > + return ec_read(REG_CRT_DETECT); > +} > + > +static int crt_video_output_set(struct output_device *od) > +{ > + int value; > + unsigned long status; > + > + status = !!od->request_state; > + > + if (status == BIT_CRT_DETECT_PLUG) { > + if (ec_read(REG_CRT_DETECT) == BIT_CRT_DETECT_PLUG) { > + /* Turn on CRT */ > + outb(0x21, 0x3c4); > + value = inb(0x3c5); > + value &= ~(1 << 7); > + outb(0x21, 0x3c4); > + outb(value, 0x3c5); > + } > + } else { > + /* Turn off CRT */ > + outb(0x21, 0x3c4); > + value = inb(0x3c5); > + value |= (1 << 7); > + outb(0x21, 0x3c4); > + outb(value, 0x3c5); > + } > + > + return 0; > +} > + > +static struct output_properties crt_output_properties = { > + .set_state = crt_video_output_set, > + .get_status = crt_video_output_get, > +}; > + > +static struct output_device *lcd_output_dev, *crt_output_dev; > + > +static void yeeloong_lcd_vo_set(int status) > +{ > + lcd_output_dev->request_state = status; > + lcd_video_output_set(lcd_output_dev); > +} > + > +static void yeeloong_crt_vo_set(int status) > +{ > + crt_output_dev->request_state = status; > + crt_video_output_set(crt_output_dev); > +} > + > +static int yeeloong_vo_init(void) > +{ > + int ret; > + > + /* Register video output device: lcd, crt */ > + lcd_output_dev = video_output_register("LCD", NULL, NULL, > + &lcd_output_properties); > + > + if (IS_ERR(lcd_output_dev)) { > + ret = PTR_ERR(lcd_output_dev); > + lcd_output_dev = NULL; > + return ret; > + } > + /* Ensure LCD is on by default */ > + yeeloong_lcd_vo_set(BIT_DISPLAY_LCD_ON); > + > + crt_output_dev = video_output_register("CRT", NULL, NULL, > + &crt_output_properties); > + > + if (IS_ERR(crt_output_dev)) { > + ret = PTR_ERR(crt_output_dev); > + crt_output_dev = NULL; > + return ret; > + } > + > + /* Turn off CRT by default, and will be enabled when the CRT > + * connectting event reported by SCI */ > + yeeloong_crt_vo_set(BIT_CRT_DETECT_UNPLUG); > + > + return 0; > +} > + > +static void yeeloong_vo_exit(void) > +{ > + if (lcd_output_dev) { > + video_output_unregister(lcd_output_dev); > + lcd_output_dev = NULL; > + } > + if (crt_output_dev) { > + video_output_unregister(crt_output_dev); > + crt_output_dev = NULL; > + } > +} > + > static struct platform_device_id platform_device_ids[] = { > { > .name = "yeeloong_laptop", > @@ -443,11 +582,19 @@ static int __init yeeloong_init(void) > return ret; > } > > + ret = yeeloong_vo_init(); > + if (ret) { > + pr_err("Fail to register yeeloong video output driver.\n"); > + yeeloong_vo_exit(); > + return ret; > + } > + > return 0; > } > > static void __exit yeeloong_exit(void) > { > + yeeloong_vo_exit(); > yeeloong_hwmon_exit(); > yeeloong_battery_exit(); > yeeloong_backlight_exit();