[PATCH] nvidiafb: Fix mode setting & PPC support
This patch fixes nvifiafb mode setting code to be closer to what the X
driver does, which actually makes it work on the 5200FX I have access to.
It also fix the routine that gets the EDID from Open Firmware on PPC, it
was broken in various ways and would crash at boot. Compared to the patch
I posted to linux-fbdev last week, this one just changes a printk to be
closer to the other ones in the driver.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: "Antonino A. Daplas" <adaplas@hotpop.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig
index 1eec03a..9c54695 100644
--- a/drivers/video/Kconfig
+++ b/drivers/video/Kconfig
@@ -703,7 +703,7 @@
config FB_NVIDIA_I2C
bool "Enable DDC Support"
- depends on FB_NVIDIA && !PPC_OF
+ depends on FB_NVIDIA
help
This enables I2C support for nVidia Chipsets. This is used
only for getting EDID information from the attached display
diff --git a/drivers/video/nvidia/nv_of.c b/drivers/video/nvidia/nv_of.c
index 4fa2cf9..7a03d04 100644
--- a/drivers/video/nvidia/nv_of.c
+++ b/drivers/video/nvidia/nv_of.c
@@ -27,34 +27,60 @@
#include "nv_local.h"
#include "nv_proto.h"
-void nvidia_create_i2c_busses(struct nvidia_par *par) {}
-void nvidia_delete_i2c_busses(struct nvidia_par *par) {}
+#include "../edid.h"
-int nvidia_probe_i2c_connector(struct fb_info *info, int conn, u8 **out_edid)
+int nvidia_probe_of_connector(struct fb_info *info, int conn, u8 **out_edid)
{
struct nvidia_par *par = info->par;
- struct device_node *dp;
+ struct device_node *parent, *dp;
unsigned char *pedid = NULL;
- unsigned char *disptype = NULL;
static char *propnames[] = {
- "DFP,EDID", "LCD,EDID", "EDID", "EDID1", "EDID,B", "EDID,A", NULL };
+ "DFP,EDID", "LCD,EDID", "EDID", "EDID1",
+ "EDID,B", "EDID,A", NULL };
int i;
- dp = pci_device_to_OF_node(par->pci_dev);
- for (; dp != NULL; dp = dp->child) {
- disptype = (unsigned char *)get_property(dp, "display-type", NULL);
- if (disptype == NULL)
- continue;
- if (strncmp(disptype, "LCD", 3) != 0)
- continue;
- for (i = 0; propnames[i] != NULL; ++i) {
- pedid = (unsigned char *)
- get_property(dp, propnames[i], NULL);
- if (pedid != NULL) {
- *out_edid = pedid;
- return 0;
+ parent = pci_device_to_OF_node(par->pci_dev);
+ if (parent == NULL)
+ return -1;
+ if (par->twoHeads) {
+ char *pname;
+ int len;
+
+ for (dp = NULL;
+ (dp = of_get_next_child(parent, dp)) != NULL;) {
+ pname = (char *)get_property(dp, "name", NULL);
+ if (!pname)
+ continue;
+ len = strlen(pname);
+ if ((pname[len-1] == 'A' && conn == 1) ||
+ (pname[len-1] == 'B' && conn == 2)) {
+ for (i = 0; propnames[i] != NULL; ++i) {
+ pedid = (unsigned char *)
+ get_property(dp, propnames[i],
+ NULL);
+ if (pedid != NULL)
+ break;
+ }
+ of_node_put(dp);
+ break;
}
}
}
- return 1;
+ if (pedid == NULL) {
+ for (i = 0; propnames[i] != NULL; ++i) {
+ pedid = (unsigned char *)
+ get_property(parent, propnames[i], NULL);
+ if (pedid != NULL)
+ break;
+ }
+ }
+ if (pedid) {
+ *out_edid = kmalloc(EDID_LENGTH, GFP_KERNEL);
+ if (*out_edid == NULL)
+ return -1;
+ memcpy(*out_edid, pedid, EDID_LENGTH);
+ printk(KERN_DEBUG "nvidiafb: Found OF EDID for head %d\n", conn);
+ return 0;
+ }
+ return -1;
}
diff --git a/drivers/video/nvidia/nv_proto.h b/drivers/video/nvidia/nv_proto.h
index cac44fc..3d35b77 100644
--- a/drivers/video/nvidia/nv_proto.h
+++ b/drivers/video/nvidia/nv_proto.h
@@ -31,7 +31,7 @@
void NVLockUnlock(struct nvidia_par *par, int);
/* in nvidia-i2c.c */
-#if defined(CONFIG_FB_NVIDIA_I2C) || defined (CONFIG_PPC_OF)
+#ifdef CONFIG_FB_NVIDIA_I2C
void nvidia_create_i2c_busses(struct nvidia_par *par);
void nvidia_delete_i2c_busses(struct nvidia_par *par);
int nvidia_probe_i2c_connector(struct fb_info *info, int conn,
@@ -39,10 +39,14 @@
#else
#define nvidia_create_i2c_busses(...)
#define nvidia_delete_i2c_busses(...)
-#define nvidia_probe_i2c_connector(p, c, edid) \
-do { \
- *(edid) = NULL; \
-} while(0)
+#define nvidia_probe_i2c_connector(p, c, edid) (-1)
+#endif
+
+#ifdef CONFIG_FB_OF
+int nvidia_probe_of_connector(struct fb_info *info, int conn,
+ u8 ** out_edid);
+#else
+#define nvidia_probe_of_connector(p, c, edid) (-1)
#endif
/* in nv_accel.c */
diff --git a/drivers/video/nvidia/nv_setup.c b/drivers/video/nvidia/nv_setup.c
index 11c8417..1f06a9f 100644
--- a/drivers/video/nvidia/nv_setup.c
+++ b/drivers/video/nvidia/nv_setup.c
@@ -190,9 +190,9 @@
present = (NV_RD32(PRAMDAC, 0x0608) & (1 << 28)) ? 1 : 0;
if (present)
- printk("nvidiafb: CRTC%i found\n", output);
+ printk("nvidiafb: CRTC%i analog found\n", output);
else
- printk("nvidiafb: CRTC%i not found\n", output);
+ printk("nvidiafb: CRTC%i analog not found\n", output);
NV_WR32(par->PRAMDAC0, 0x0608, NV_RD32(par->PRAMDAC0, 0x0608) &
0x0000EFFF);
@@ -305,6 +305,9 @@
int FlatPanel = -1; /* really means the CRTC is slaved */
int Television = 0;
+ memset(&monitorA, 0, sizeof(struct fb_monspecs));
+ memset(&monitorB, 0, sizeof(struct fb_monspecs));
+
par->PRAMIN = par->REGS + (0x00710000 / 4);
par->PCRTC0 = par->REGS + (0x00600000 / 4);
par->PRAMDAC0 = par->REGS + (0x00680000 / 4);
@@ -401,7 +404,8 @@
nvidia_create_i2c_busses(par);
if (!par->twoHeads) {
par->CRTCnumber = 0;
- nvidia_probe_i2c_connector(info, 1, &edidA);
+ if (nvidia_probe_i2c_connector(info, 1, &edidA))
+ nvidia_probe_of_connector(info, 1, &edidA);
if (edidA && !fb_parse_edid(edidA, &var)) {
printk("nvidiafb: EDID found from BUS1\n");
monA = &monitorA;
@@ -488,14 +492,16 @@
oldhead = NV_RD32(par->PCRTC0, 0x00000860);
NV_WR32(par->PCRTC0, 0x00000860, oldhead | 0x00000010);
- nvidia_probe_i2c_connector(info, 1, &edidA);
+ if (nvidia_probe_i2c_connector(info, 1, &edidA))
+ nvidia_probe_of_connector(info, 1, &edidA);
if (edidA && !fb_parse_edid(edidA, &var)) {
printk("nvidiafb: EDID found from BUS1\n");
monA = &monitorA;
fb_edid_to_monspecs(edidA, monA);
}
- nvidia_probe_i2c_connector(info, 2, &edidB);
+ if (nvidia_probe_i2c_connector(info, 2, &edidB))
+ nvidia_probe_of_connector(info, 2, &edidB);
if (edidB && !fb_parse_edid(edidB, &var)) {
printk("nvidiafb: EDID found from BUS2\n");
monB = &monitorB;
diff --git a/drivers/video/nvidia/nvidia.c b/drivers/video/nvidia/nvidia.c
index 308defc..96d5114 100644
--- a/drivers/video/nvidia/nvidia.c
+++ b/drivers/video/nvidia/nvidia.c
@@ -627,41 +627,85 @@
NVTRACE_LEAVE();
}
+#undef DUMP_REG
+
static void nvidia_write_regs(struct nvidia_par *par)
{
struct _riva_hw_state *state = &par->ModeReg;
int i;
NVTRACE_ENTER();
- NVWriteCrtc(par, 0x11, 0x00);
-
- NVLockUnlock(par, 0);
NVLoadStateExt(par, state);
NVWriteMiscOut(par, state->misc_output);
+ for (i = 1; i < NUM_SEQ_REGS; i++) {
+#ifdef DUMP_REG
+ printk(" SEQ[%02x] = %08x\n", i, state->seq[i]);
+#endif
+ NVWriteSeq(par, i, state->seq[i]);
+ }
+
+ /* Ensure CRTC registers 0-7 are unlocked by clearing bit 7 of CRTC[17] */
+ NVWriteCrtc(par, 0x11, state->crtc[0x11] & ~0x80);
+
for (i = 0; i < NUM_CRT_REGS; i++) {
switch (i) {
case 0x19:
case 0x20 ... 0x40:
break;
default:
+#ifdef DUMP_REG
+ printk("CRTC[%02x] = %08x\n", i, state->crtc[i]);
+#endif
NVWriteCrtc(par, i, state->crtc[i]);
}
}
- for (i = 0; i < NUM_ATC_REGS; i++)
- NVWriteAttr(par, i, state->attr[i]);
-
- for (i = 0; i < NUM_GRC_REGS; i++)
+ for (i = 0; i < NUM_GRC_REGS; i++) {
+#ifdef DUMP_REG
+ printk(" GRA[%02x] = %08x\n", i, state->gra[i]);
+#endif
NVWriteGr(par, i, state->gra[i]);
+ }
- for (i = 0; i < NUM_SEQ_REGS; i++)
- NVWriteSeq(par, i, state->seq[i]);
+ for (i = 0; i < NUM_ATC_REGS; i++) {
+#ifdef DUMP_REG
+ printk("ATTR[%02x] = %08x\n", i, state->attr[i]);
+#endif
+ NVWriteAttr(par, i, state->attr[i]);
+ }
+
NVTRACE_LEAVE();
}
+static void nvidia_vga_protect(struct nvidia_par *par, int on)
+{
+ unsigned char tmp;
+
+ if (on) {
+ /*
+ * Turn off screen and disable sequencer.
+ */
+ tmp = NVReadSeq(par, 0x01);
+
+ NVWriteSeq(par, 0x00, 0x01); /* Synchronous Reset */
+ NVWriteSeq(par, 0x01, tmp | 0x20); /* disable the display */
+ } else {
+ /*
+ * Reenable sequencer, then turn on screen.
+ */
+
+ tmp = NVReadSeq(par, 0x01);
+
+ NVWriteSeq(par, 0x01, tmp & ~0x20); /* reenable display */
+ NVWriteSeq(par, 0x00, 0x03); /* End Reset */
+ }
+}
+
+
+
static int nvidia_calc_regs(struct fb_info *info)
{
struct nvidia_par *par = info->par;
@@ -868,7 +912,7 @@
for (i = 0; i < 0x10; i++)
state->attr[i] = i;
state->attr[0x10] = 0x41;
- state->attr[0x11] = 0x01;
+ state->attr[0x11] = 0xff;
state->attr[0x12] = 0x0f;
state->attr[0x13] = 0x00;
state->attr[0x14] = 0x00;
@@ -991,7 +1035,6 @@
nvidia_init_vga(info);
nvidia_calc_regs(info);
- nvidia_write_regs(par);
NVLockUnlock(par, 0);
if (par->twoHeads) {
@@ -1000,7 +1043,22 @@
NVLockUnlock(par, 0);
}
- NVWriteCrtc(par, 0x11, 0x00);
+ nvidia_vga_protect(par, 1);
+
+ nvidia_write_regs(par);
+
+#if defined (__BIG_ENDIAN)
+ /* turn on LFB swapping */
+ {
+ unsigned char tmp;
+
+ VGA_WR08(par->PCIO, 0x3d4, 0x46);
+ tmp = VGA_RD08(par->PCIO, 0x3d5);
+ tmp |= (1 << 7);
+ VGA_WR08(par->PCIO, 0x3d5, tmp);
+ }
+#endif
+
info->fix.line_length = (info->var.xres_virtual *
info->var.bits_per_pixel) >> 3;
if (info->var.accel_flags) {
@@ -1022,7 +1080,7 @@
par->cursor_reset = 1;
- NVWriteCrtc(par, 0x11, 0xff);
+ nvidia_vga_protect(par, 0);
NVTRACE_LEAVE();
return 0;