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path: root/drivers/video/nvidia
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-rw-r--r--drivers/video/nvidia/nv_i2c.c8
-rw-r--r--drivers/video/nvidia/nv_type.h1
-rw-r--r--drivers/video/nvidia/nvidia.c6
3 files changed, 11 insertions, 4 deletions
diff --git a/drivers/video/nvidia/nv_i2c.c b/drivers/video/nvidia/nv_i2c.c
index afe4567e1ff..0cbcb3d833f 100644
--- a/drivers/video/nvidia/nv_i2c.c
+++ b/drivers/video/nvidia/nv_i2c.c
@@ -125,11 +125,11 @@ void nvidia_create_i2c_busses(struct nvidia_par *par)
par->chan[1].par = par;
par->chan[2].par = par;
- par->chan[0].ddc_base = 0x36;
- nvidia_setup_i2c_bus(&par->chan[0], "nvidia #0", I2C_CLASS_HWMON);
+ par->chan[0].ddc_base = (par->reverse_i2c) ? 0x36 : 0x3e;
+ nvidia_setup_i2c_bus(&par->chan[0], "nvidia #0", 0);
- par->chan[1].ddc_base = 0x3e;
- nvidia_setup_i2c_bus(&par->chan[1], "nvidia #1", 0);
+ par->chan[1].ddc_base = (par->reverse_i2c) ? 0x3e : 0x36;
+ nvidia_setup_i2c_bus(&par->chan[1], "nvidia #1", I2C_CLASS_HWMON);
par->chan[2].ddc_base = 0x50;
nvidia_setup_i2c_bus(&par->chan[2], "nvidia #2", 0);
diff --git a/drivers/video/nvidia/nv_type.h b/drivers/video/nvidia/nv_type.h
index 2fdf77ec39f..f132aab8c5d 100644
--- a/drivers/video/nvidia/nv_type.h
+++ b/drivers/video/nvidia/nv_type.h
@@ -135,6 +135,7 @@ struct nvidia_par {
int paneltweak;
int LVDS;
int pm_state;
+ int reverse_i2c;
u32 crtcSync_read;
u32 fpSyncs;
u32 dmaPut;
diff --git a/drivers/video/nvidia/nvidia.c b/drivers/video/nvidia/nvidia.c
index a7fe214f0f7..30e14eb1f51 100644
--- a/drivers/video/nvidia/nvidia.c
+++ b/drivers/video/nvidia/nvidia.c
@@ -79,6 +79,7 @@ static int noscale __devinitdata = 0;
static int paneltweak __devinitdata = 0;
static int vram __devinitdata = 0;
static int bpp __devinitdata = 8;
+static int reverse_i2c __devinitdata;
#ifdef CONFIG_MTRR
static int nomtrr __devinitdata = 0;
#endif
@@ -1305,6 +1306,7 @@ static int __devinit nvidiafb_probe(struct pci_dev *pd,
par->CRTCnumber = forceCRTC;
par->FpScale = (!noscale);
par->paneltweak = paneltweak;
+ par->reverse_i2c = reverse_i2c;
/* enable IO and mem if not already done */
pci_read_config_word(pd, PCI_COMMAND, &cmd);
@@ -1486,6 +1488,8 @@ static int __devinit nvidiafb_setup(char *options)
noaccel = 1;
} else if (!strncmp(this_opt, "noscale", 7)) {
noscale = 1;
+ } else if (!strncmp(this_opt, "reverse_i2c", 11)) {
+ reverse_i2c = 1;
} else if (!strncmp(this_opt, "paneltweak:", 11)) {
paneltweak = simple_strtoul(this_opt+11, NULL, 0);
} else if (!strncmp(this_opt, "vram:", 5)) {
@@ -1582,6 +1586,8 @@ MODULE_PARM_DESC(mode_option, "Specify initial video mode");
module_param(bpp, int, 0);
MODULE_PARM_DESC(bpp, "pixel width in bits"
"(default=8)");
+module_param(reverse_i2c, int, 0);
+MODULE_PARM_DESC(reverse_i2c, "reverse port assignment of the i2c bus");
#ifdef CONFIG_MTRR
module_param(nomtrr, bool, 0);
MODULE_PARM_DESC(nomtrr, "Disables MTRR support (0 or 1=disabled) "