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framework for settings modifications like in radeon_vid ( /dev/mga_vid can

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be written to ).
Brightness and chroma control.


git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@4484 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
eyck 2002-02-02 20:49:52 +00:00
parent 98f66c1fe2
commit 22dfed32b5
1 changed files with 38 additions and 4 deletions
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42
drivers/mga_vid.c
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@ -88,6 +88,12 @@ MODULE_AUTHOR("Aaron Holtzman <aholtzma@engr.uvic.ca>");
MODULE_LICENSE("GPL");
#endif
// WARNING - eyck changes
#define PARAM_BRIGHTNESS "brightness="
#define PARAM_SATURATION "saturation="
#define PARAM_BLACKIE "blackie="
// end eyck
typedef struct bes_registers_s
{
//BES Control
@ -152,6 +158,11 @@ typedef struct bes_registers_s
//BES Field 2 weight start
uint32_t besv2wght;
//configurable stuff
int brightness;
int blackie;
} bes_registers_t;
static bes_registers_t regs;
@ -680,11 +691,16 @@ switch(config->format){
return -1;
}
// setting black&white mode
regs.besctl|=(regs.blackie<<20); // TODO: check g200 & g400 (maybe tomorrow)
//Disable contrast and brightness control
//Enable contrast and brightness control
regs.besglobctl |= (1<<5) + (1<<7);
regs.beslumactl = (0x7f << 16) + (0x80<<0);
regs.beslumactl = 0x80<<0;
// brightness ; default is 0x7f;
regs.beslumactl = (regs.brightness << 16);
// contrast:
regs.beslumactl|= (0x80<<0);
//Setup destination window boundaries
besleft = x > 0 ? x : 0;
@ -1304,7 +1320,25 @@ static ssize_t mga_vid_read(struct file *file, char *buf, size_t count, loff_t *
static ssize_t mga_vid_write(struct file *file, const char *buf, size_t count, loff_t *ppos)
{
return -EINVAL;
// WARNING: eyck changes
if(memcmp(buf,PARAM_BRIGHTNESS,min(count,strlen(PARAM_BRIGHTNESS))) == 0)
{
short brightness;
brightness=simple_strtol(&buf[strlen(PARAM_BRIGHTNESS)],NULL,10);
if (brightness>127 || brightness<-128) { brightness=0;}
// printk(KERN_DEBUG "mga_vid: brightness modified ( %d ) \n",brightness);
regs.brightness=brightness;
} else
if(memcmp(buf,PARAM_BLACKIE,min(count,strlen(PARAM_BLACKIE))) == 0)
{
short blackie;
blackie=simple_strtol(&buf[strlen(PARAM_BLACKIE)],NULL,10);
// printk(KERN_DEBUG "mga_vid: shadow mode: ( %d ) \n",blackie);
regs.blackie=(blackie>0)?1:0;
} else count = -EIO;
// TODO: reset settings
return count;
// return -EINVAL;
}
static int mga_vid_mmap(struct file *file, struct vm_area_struct *vma)