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authorJean Delvare <khali@linux-fr.org>2008-07-14 22:38:28 +0200
committerJean Delvare <khali@mahadeva.delvare>2008-07-14 22:38:28 +0200
commitc1b6b4f2342d073698dfc2547240c35045a1d00e (patch)
tree2aa5024a099e1c4d5a5b4bc0ce5f832d80d6a15e /drivers/video
parent0d2b405a628309310b4fc02b26d713b855ad5f68 (diff)
i2c: Let framebuffer drivers set their I2C bus class to DDC
Let framebuffer drivers set their I2C bus class to DDC. Once this is done, we will be able to tell the eeprom driver to only probe for EDID EEPROMs on these buses. Signed-off-by: Jean Delvare <khali@linux-fr.org>
Diffstat (limited to 'drivers/video')
-rw-r--r--drivers/video/fb_ddc.c1
-rw-r--r--drivers/video/intelfb/intelfb_i2c.c12
-rw-r--r--drivers/video/matrox/i2c-matroxfb.c20
3 files changed, 23 insertions, 10 deletions
diff --git a/drivers/video/fb_ddc.c b/drivers/video/fb_ddc.c
index a0df63289b5f..0cf96eb8a60f 100644
--- a/drivers/video/fb_ddc.c
+++ b/drivers/video/fb_ddc.c
@@ -106,6 +106,7 @@ unsigned char *fb_ddc_read(struct i2c_adapter *adapter)
algo_data->setsda(algo_data->data, 1);
algo_data->setscl(algo_data->data, 1);
+ adapter->class |= I2C_CLASS_DDC;
return edid;
}
diff --git a/drivers/video/intelfb/intelfb_i2c.c b/drivers/video/intelfb/intelfb_i2c.c
index ca95f09d8b43..fcf9fadbf572 100644
--- a/drivers/video/intelfb/intelfb_i2c.c
+++ b/drivers/video/intelfb/intelfb_i2c.c
@@ -100,7 +100,8 @@ static int intelfb_gpio_getsda(void *data)
static int intelfb_setup_i2c_bus(struct intelfb_info *dinfo,
struct intelfb_i2c_chan *chan,
- const u32 reg, const char *name)
+ const u32 reg, const char *name,
+ int class)
{
int rc;
@@ -108,6 +109,7 @@ static int intelfb_setup_i2c_bus(struct intelfb_info *dinfo,
chan->reg = reg;
snprintf(chan->adapter.name, sizeof(chan->adapter.name),
"intelfb %s", name);
+ chan->adapter.class = class;
chan->adapter.owner = THIS_MODULE;
chan->adapter.id = I2C_HW_B_INTELFB;
chan->adapter.algo_data = &chan->algo;
@@ -145,7 +147,7 @@ void intelfb_create_i2c_busses(struct intelfb_info *dinfo)
/* setup the DDC bus for analog output */
intelfb_setup_i2c_bus(dinfo, &dinfo->output[i].ddc_bus, GPIOA,
- "CRTDDC_A");
+ "CRTDDC_A", I2C_CLASS_DDC);
i++;
/* need to add the output busses for each device
@@ -159,9 +161,9 @@ void intelfb_create_i2c_busses(struct intelfb_info *dinfo)
case INTEL_865G:
dinfo->output[i].type = INTELFB_OUTPUT_DVO;
intelfb_setup_i2c_bus(dinfo, &dinfo->output[i].ddc_bus,
- GPIOD, "DVODDC_D");
+ GPIOD, "DVODDC_D", I2C_CLASS_DDC);
intelfb_setup_i2c_bus(dinfo, &dinfo->output[i].i2c_bus,
- GPIOE, "DVOI2C_E");
+ GPIOE, "DVOI2C_E", 0);
i++;
break;
case INTEL_915G:
@@ -174,7 +176,7 @@ void intelfb_create_i2c_busses(struct intelfb_info *dinfo)
/* SDVO ports have a single control bus - 2 devices */
dinfo->output[i].type = INTELFB_OUTPUT_SDVO;
intelfb_setup_i2c_bus(dinfo, &dinfo->output[i].i2c_bus,
- GPIOE, "SDVOCTRL_E");
+ GPIOE, "SDVOCTRL_E", 0);
/* TODO: initialize the SDVO */
/* I830SDVOInit(pScrn, i, DVOB); */
i++;
diff --git a/drivers/video/matrox/i2c-matroxfb.c b/drivers/video/matrox/i2c-matroxfb.c
index 4baab7be58de..75ee5a12e549 100644
--- a/drivers/video/matrox/i2c-matroxfb.c
+++ b/drivers/video/matrox/i2c-matroxfb.c
@@ -104,7 +104,9 @@ static struct i2c_algo_bit_data matrox_i2c_algo_template =
};
static int i2c_bus_reg(struct i2c_bit_adapter* b, struct matrox_fb_info* minfo,
- unsigned int data, unsigned int clock, const char* name) {
+ unsigned int data, unsigned int clock, const char *name,
+ int class)
+{
int err;
b->minfo = minfo;
@@ -114,6 +116,7 @@ static int i2c_bus_reg(struct i2c_bit_adapter* b, struct matrox_fb_info* minfo,
snprintf(b->adapter.name, sizeof(b->adapter.name), name,
minfo->fbcon.node);
i2c_set_adapdata(&b->adapter, b);
+ b->adapter.class = class;
b->adapter.algo_data = &b->bac;
b->adapter.dev.parent = &ACCESS_FBINFO(pcidev)->dev;
b->bac = matrox_i2c_algo_template;
@@ -159,22 +162,29 @@ static void* i2c_matroxfb_probe(struct matrox_fb_info* minfo) {
switch (ACCESS_FBINFO(chip)) {
case MGA_2064:
case MGA_2164:
- err = i2c_bus_reg(&m2info->ddc1, minfo, DDC1B_DATA, DDC1B_CLK, "DDC:fb%u #0");
+ err = i2c_bus_reg(&m2info->ddc1, minfo,
+ DDC1B_DATA, DDC1B_CLK,
+ "DDC:fb%u #0", I2C_CLASS_DDC);
break;
default:
- err = i2c_bus_reg(&m2info->ddc1, minfo, DDC1_DATA, DDC1_CLK, "DDC:fb%u #0");
+ err = i2c_bus_reg(&m2info->ddc1, minfo,
+ DDC1_DATA, DDC1_CLK,
+ "DDC:fb%u #0", I2C_CLASS_DDC);
break;
}
if (err)
goto fail_ddc1;
if (ACCESS_FBINFO(devflags.dualhead)) {
- err = i2c_bus_reg(&m2info->ddc2, minfo, DDC2_DATA, DDC2_CLK, "DDC:fb%u #1");
+ err = i2c_bus_reg(&m2info->ddc2, minfo,
+ DDC2_DATA, DDC2_CLK,
+ "DDC:fb%u #1", I2C_CLASS_DDC);
if (err == -ENODEV) {
printk(KERN_INFO "i2c-matroxfb: VGA->TV plug detected, DDC unavailable.\n");
} else if (err)
printk(KERN_INFO "i2c-matroxfb: Could not register secondary output i2c bus. Continuing anyway.\n");
/* Register maven bus even on G450/G550 */
- err = i2c_bus_reg(&m2info->maven, minfo, MAT_DATA, MAT_CLK, "MAVEN:fb%u");
+ err = i2c_bus_reg(&m2info->maven, minfo,
+ MAT_DATA, MAT_CLK, "MAVEN:fb%u", 0);
if (err)
printk(KERN_INFO "i2c-matroxfb: Could not register Maven i2c bus. Continuing anyway.\n");
}