diff options
| author | Dennis Munsie <dmunsie@cecropia.com> | 2006-10-03 01:14:46 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-10-03 08:04:10 -0700 |
| commit | 7a45093b7caa9d3d5421274b4ba80fba5da17e19 (patch) | |
| tree | 33b08dd767325bb1ee82840a1b3c0232bc275d8d /drivers/video/aty/radeon_i2c.c | |
| parent | 946c4eab86cc67dac6021b56f45495f59b3970b4 (diff) | |
[PATCH] radeonfb: Use generic DDC reading
Uses the generic ddc read functionality in fbmon.c instead of the previous
functionality.
Signed-off-by: Dennis Munsie <dmunsie@cecropia.com>
Signed-off-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/video/aty/radeon_i2c.c')
| -rw-r--r-- | drivers/video/aty/radeon_i2c.c | 106 |
1 files changed, 3 insertions, 103 deletions
diff --git a/drivers/video/aty/radeon_i2c.c b/drivers/video/aty/radeon_i2c.c index 9aaca58c074a..676754520099 100644 --- a/drivers/video/aty/radeon_i2c.c +++ b/drivers/video/aty/radeon_i2c.c @@ -16,8 +16,6 @@ #include "radeonfb.h" #include "../edid.h" -#define RADEON_DDC 0x50 - static void radeon_gpio_setscl(void* data, int state) { struct radeon_i2c_chan *chan = data; @@ -138,108 +136,10 @@ void radeon_delete_i2c_busses(struct radeonfb_info *rinfo) rinfo->i2c[3].rinfo = NULL; } - -static u8 *radeon_do_probe_i2c_edid(struct radeon_i2c_chan *chan) -{ - u8 start = 0x0; - struct i2c_msg msgs[] = { - { - .addr = RADEON_DDC, - .len = 1, - .buf = &start, - }, { - .addr = RADEON_DDC, - .flags = I2C_M_RD, - .len = EDID_LENGTH, - }, - }; - u8 *buf; - - buf = kmalloc(EDID_LENGTH, GFP_KERNEL); - if (!buf) { - dev_warn(&chan->rinfo->pdev->dev, "Out of memory!\n"); - return NULL; - } - msgs[1].buf = buf; - - if (i2c_transfer(&chan->adapter, msgs, 2) == 2) - return buf; - dev_dbg(&chan->rinfo->pdev->dev, "Unable to read EDID block.\n"); - kfree(buf); - return NULL; -} - - -int radeon_probe_i2c_connector(struct radeonfb_info *rinfo, int conn, u8 **out_edid) +int radeon_probe_i2c_connector(struct radeonfb_info *rinfo, int conn, + u8 **out_edid) { - u32 reg = rinfo->i2c[conn-1].ddc_reg; - u8 *edid = NULL; - int i, j; - - OUTREG(reg, INREG(reg) & - ~(VGA_DDC_DATA_OUTPUT | VGA_DDC_CLK_OUTPUT)); - - OUTREG(reg, INREG(reg) & ~(VGA_DDC_CLK_OUT_EN)); - (void)INREG(reg); - - for (i = 0; i < 3; i++) { - /* For some old monitors we need the - * following process to initialize/stop DDC - */ - OUTREG(reg, INREG(reg) & ~(VGA_DDC_DATA_OUT_EN)); - (void)INREG(reg); - msleep(13); - - OUTREG(reg, INREG(reg) & ~(VGA_DDC_CLK_OUT_EN)); - (void)INREG(reg); - for (j = 0; j < 5; j++) { - msleep(10); - if (INREG(reg) & VGA_DDC_CLK_INPUT) - break; - } - if (j == 5) - continue; - - OUTREG(reg, INREG(reg) | VGA_DDC_DATA_OUT_EN); - (void)INREG(reg); - msleep(15); - OUTREG(reg, INREG(reg) | VGA_DDC_CLK_OUT_EN); - (void)INREG(reg); - msleep(15); - OUTREG(reg, INREG(reg) & ~(VGA_DDC_DATA_OUT_EN)); - (void)INREG(reg); - msleep(15); - - /* Do the real work */ - edid = radeon_do_probe_i2c_edid(&rinfo->i2c[conn-1]); - - OUTREG(reg, INREG(reg) | - (VGA_DDC_DATA_OUT_EN | VGA_DDC_CLK_OUT_EN)); - (void)INREG(reg); - msleep(15); - - OUTREG(reg, INREG(reg) & ~(VGA_DDC_CLK_OUT_EN)); - (void)INREG(reg); - for (j = 0; j < 10; j++) { - msleep(10); - if (INREG(reg) & VGA_DDC_CLK_INPUT) - break; - } - - OUTREG(reg, INREG(reg) & ~(VGA_DDC_DATA_OUT_EN)); - (void)INREG(reg); - msleep(15); - OUTREG(reg, INREG(reg) | - (VGA_DDC_DATA_OUT_EN | VGA_DDC_CLK_OUT_EN)); - (void)INREG(reg); - if (edid) - break; - } - /* Release the DDC lines when done or the Apple Cinema HD display - * will switch off - */ - OUTREG(reg, INREG(reg) & ~(VGA_DDC_CLK_OUT_EN | VGA_DDC_DATA_OUT_EN)); - (void)INREG(reg); + u8 *edid = fb_ddc_read(&rinfo->i2c[conn-1].adapter); if (out_edid) *out_edid = edid; |