Attachment 19410 Details for Bug 17922 – possible fix

[patch] possible fix

bug17922.diff (text/plain), 1.84 KB, created by Alex Deucher on 2008-10-06 08:05:09 UTC

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Creator: Alex Deucher

Created: 2008-10-06 08:05:09 UTC

Size: 1.84 KB

patch

obsolete

>diff --git a/src/radeon_bios.c b/src/radeon_bios.c
>index b34a421..726fbcf 100644
>--- a/src/radeon_bios.c
>+++ b/src/radeon_bios.c
>@@ -1321,6 +1321,43 @@ Bool RADEONGetExtTMDSInfoFromBIOS (xf86OutputPtr output)
>     return FALSE;
> }
> 
>+static void radeon_hw_i2c_write(xf86OutputPtr output, uint32_t gpio_reg,
>+				int slave, int address, int value)
>+{
>+    ScrnInfoPtr pScrn = output->scrn;
>+    RADEONInfoPtr info = RADEONPTR(pScrn);
>+    unsigned char *RADEONMMIO = info->MMIO;
>+    uint32_t gpio_line;
>+
>+    if (gpio_reg == RADEON_GPIO_VGA_DDC)
>+	gpio_line = (0 << 3);
>+    else if (gpio_reg == RADEON_GPIO_DVI_DDC)
>+	gpio_line = (1 << 3);
>+    else if (gpio_reg == RADEON_GPIO_DVI_DDC)
>+	gpio_line = (2 << 3);
>+    else if (gpio_reg == RADEON_GPIO_CRT2_DDC)
>+	gpio_line = (3 << 3);
>+    else {
>+	ErrorF("bad gpio_reg: 0x%x\n", gpio_reg);
>+	return;
>+    }
>+
>+    ErrorF("gpio_reg: 0x%x\n", gpio_reg);
>+
>+    OUTREG(RADEON_DVI_I2C_CNTL_0, 0x27 | gpio_line);
>+    OUTREG(RADEON_DVI_I2C_CNTL_1, 0x30020021);
>+
>+    OUTREG(RADEON_DVI_I2C_DATA, slave);
>+    OUTREG(RADEON_DVI_I2C_DATA, address);
>+    OUTREG(RADEON_DVI_I2C_DATA, value);
>+
>+    OUTREG(RADEON_DVI_I2C_CNTL_0, 0x8801300 | gpio_line);
>+    usleep(1000);
>+
>+    ErrorF("gpio_reg status: 0x%x\n", INREG(RADEON_DVI_I2C_CNTL_0));
>+}
>+
>+
> Bool RADEONInitExtTMDSInfoFromBIOS (xf86OutputPtr output)
> {
>     ScrnInfoPtr pScrn = output->scrn;
>@@ -1391,7 +1428,9 @@ Bool RADEONInitExtTMDSInfoFromBIOS (xf86OutputPtr output)
> 				index++;
> 				ErrorF("i2c write: 0x%x, 0x%x\n", (unsigned)reg,
> 				       (unsigned)val);
>-				RADEONDVOWriteByte(radeon_output->DVOChip, reg, val);
>+				//RADEONDVOWriteByte(radeon_output->DVOChip, reg, val);
>+				radeon_hw_i2c_write(output, radeon_output->dvo_i2c_slave_addr,
>+						    radeon_output->dvo_i2c.mask_clk_reg, reg, val);
> 				break;
> 			    default:
> 				ErrorF("unknown id %d\n", id>>13);

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