From 71c5c6de8c1fa39cfd668348ad0c02b913eb205e Mon Sep 17 00:00:00 2001
From: Tilman Sauerbeck <tilman@code-monkey.de>
Date: Wed, 1 Aug 2007 21:46:10 +0200
Subject: Added output detection based on PInS data.

---
 src/mga.h        | 13 +++++++++++++
 src/mga_bios.c   | 10 ++++++++++
 src/mga_driver.c | 43 ++++++++++++++++++++++++++++++-------------
 3 files changed, 53 insertions(+), 13 deletions(-)

diff --git a/src/mga.h b/src/mga.h
index 8a3cf6b..43595a3 100644
--- a/src/mga.h
+++ b/src/mga.h
@@ -301,6 +301,14 @@ typedef enum {
     MGA_HOST_AGP_4x = 7     /**< AGP 4x capable. */
 } mga_host_t;
 
+typedef enum {
+    MGA_CONNECTOR_NONE = 0,
+    MGA_CONNECTOR_HD15,
+    MGA_CONNECTOR_DVI,
+    MGA_CONNECTOR_TV,
+    MGA_CONNECTOR_LAST = MGA_CONNECTOR_TV
+} mga_connector_t;
+
 /**
  * Card information derrived from BIOS PInS data.
  */
@@ -341,6 +349,11 @@ struct mga_bios_values {
      * Type of physical interface used for the card.
      */
     mga_host_t host_interface;
+
+    /**
+     * On G450 and G550 PInS lists the available connectors.
+     */
+    mga_connector_t connector[2];
 };
 
 
diff --git a/src/mga_bios.c b/src/mga_bios.c
index dd75f3f..bf70b84 100644
--- a/src/mga_bios.c
+++ b/src/mga_bios.c
@@ -118,6 +118,7 @@ static void mga_initialize_bios_values( MGAPtr pMga,
     (void) memset( bios, 0, sizeof( *bios ) );
 
     bios->pixel.min_freq = 50000;
+    bios->connector[0] = bios->connector[1] = MGA_CONNECTOR_NONE;
 
     switch( pMga->Chipset ) {
     case PCI_CHIP_MGA2064:
@@ -341,6 +342,7 @@ static void mga_parse_bios_ver_5( struct mga_bios_values * bios,
 				  const CARD8 * bios_data )
 {
     const unsigned scale = (bios_data[4] != 0) ? 8000 : 6000;
+    mga_connector_t connector;
 
 
     if ( bios_data[38] != 0xff ) {
@@ -397,6 +399,14 @@ static void mga_parse_bios_ver_5( struct mga_bios_values * bios,
     }
 
     bios->host_interface = (bios_data[113] >> 3) & 0x07;
+
+    connector = bios_data[116] & 0x0f;
+    if (connector <= MGA_CONNECTOR_LAST)
+        bios->connector[0] = connector;
+
+    connector = (bios_data[116] >> 4) & 0x0f;
+    if (connector <= MGA_CONNECTOR_LAST)
+        bios->connector[1] = connector;
 }
 
 
diff --git a/src/mga_driver.c b/src/mga_driver.c
index ed923e8..71b9857 100644
--- a/src/mga_driver.c
+++ b/src/mga_driver.c
@@ -1078,24 +1078,41 @@ MGAMavenRead(ScrnInfoPtr pScrn, I2CByte reg, I2CByte *val)
 static void
 setup_outputs(ScrnInfoPtr scrn)
 {
+    MGAPtr pMga;
     xf86OutputPtr output;
 
-    /* FIXME:
-     * Create outputs depending on the hardware.
-     */
-    output = MgaGOutputPanelInit (scrn);
+    pMga = MGAPTR(scrn);
+
+    /* first output */
+    switch (pMga->bios.connector[0]) {
+    case MGA_CONNECTOR_DVI:
+        output = MgaGOutputPanelInit (scrn);
+        break;
+    default:
+        /* in case PInS doesn't contain connector info
+         * or it claims there's no primary output
+         * we just assume it's VGA.
+         */
+        output = MgaGOutputDac1Init (scrn);
+        break;
+    }
+
+    /* the first output can be mapped to any crtc */
     output->possible_crtcs = 1 | 2;
-    output->possible_clones = 1 | 2;
 
-#if 0
-    output = MgaGOutputDac1Init (scrn);
-    output->possible_crtcs = 1 |  2;
-    output->possible_clones = 1 | 2;
-#endif
+    /* second output */
+    switch (pMga->bios.connector[1]) {
+    case MGA_CONNECTOR_HD15:
+        output = MgaGOutputDac2Init (scrn);
+        break;
+    default:
+        output = NULL;
+        break;
+    }
 
-    output = MgaGOutputDac2Init (scrn);
-    output->possible_crtcs = 2;
-    output->possible_clones = 2;
+    /* the second output can only be mapped to crtc 2 */
+    if (output)
+        output->possible_crtcs = 2;
 }
 
 /* Mandatory */
-- 
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