Re: [U-Boot] [PATCH 1/3] video: sm501: add support for SM501 chips on PCI bus

2010-06-12 Thread Anatolij Gustschin
On Wed, 26 May 2010 10:38:57 +0200
Anatolij Gustschin ag...@denx.de wrote:

 Signed-off-by: Anatolij Gustschin ag...@denx.de
 ---
  drivers/video/sm501.c |   89 
 ++---
  include/pci_ids.h |1 +
  2 files changed, 85 insertions(+), 5 deletions(-)

Applied to u-boot-video/next.

Anatolij
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[U-Boot] [PATCH 1/3] video: sm501: add support for SM501 chips on PCI bus

2010-05-26 Thread Anatolij Gustschin
Signed-off-by: Anatolij Gustschin ag...@denx.de
---
 drivers/video/sm501.c |   89 ++---
 include/pci_ids.h |1 +
 2 files changed, 85 insertions(+), 5 deletions(-)

diff --git a/drivers/video/sm501.c b/drivers/video/sm501.c
index 283d2d9..544e0a0 100644
--- a/drivers/video/sm501.c
+++ b/drivers/video/sm501.c
@@ -31,6 +31,7 @@
 
 #include common.h
 
+#include asm/io.h
 #include video_fb.h
 #include sm501.h
 
@@ -54,6 +55,18 @@
 
 GraphicDevice sm501;
 
+void write_be32(int off, unsigned int val)
+{
+   out_be32((unsigned __iomem *)(sm501.isaBase + off), val);
+}
+
+void write_le32(int off, unsigned int val)
+{
+   out_le32((unsigned __iomem *)(sm501.isaBase + off), val);
+}
+
+void (*write_reg32)(int off, unsigned int val) = write_be32;
+
 /*-
  * SmiSetRegs --
  *-
@@ -66,7 +79,7 @@ static void SmiSetRegs (void)
 */
const SMI_REGS *preg = board_get_regs ();
while (preg-Index) {
-   write32 (preg-Index, preg-Value);
+   write_reg32 (preg-Index, preg-Value);
/*
 * Insert a delay between
 */
@@ -75,26 +88,92 @@ static void SmiSetRegs (void)
}
 }
 
+#ifdef CONFIG_VIDEO_SM501_PCI
+static struct pci_device_id sm501_pci_tbl[] = {
+   { PCI_VENDOR_ID_SMI, PCI_DEVICE_ID_SMI_501 },
+   {}
+};
+#endif
+
 /*-
  * video_hw_init --
  *-
  */
 void *video_hw_init (void)
 {
+#ifdef CONFIG_VIDEO_SM501_PCI
+   unsigned int pci_mem_base, pci_mmio_base;
+   unsigned int id;
+   unsigned short device_id;
+   pci_dev_t devbusfn;
+   int mem;
+#endif
unsigned int *vm, i;
 
memset (sm501, 0, sizeof (GraphicDevice));
 
+#ifdef CONFIG_VIDEO_SM501_PCI
+   printf(Video: );
+
+   /* Look for SM501/SM502 chips */
+   devbusfn = pci_find_devices(sm501_pci_tbl, 0);
+   if (devbusfn  0) {
+   printf (PCI Controller not found.\n);
+   goto not_pci;
+   }
+
+   /* Setup */
+   pci_write_config_dword (devbusfn, PCI_COMMAND,
+   (PCI_COMMAND_MEMORY | PCI_COMMAND_IO));
+   pci_read_config_word (devbusfn, PCI_DEVICE_ID, device_id);
+   pci_read_config_dword (devbusfn, PCI_REVISION_ID, id);
+   pci_read_config_dword (devbusfn, PCI_BASE_ADDRESS_0, pci_mem_base);
+   pci_read_config_dword (devbusfn, PCI_BASE_ADDRESS_1, pci_mmio_base);
+   sm501.frameAdrs = pci_mem_to_phys (devbusfn, pci_mem_base);
+   sm501.isaBase = pci_mem_to_phys (devbusfn, pci_mmio_base);
+
+   if (sm501.isaBase)
+   write_reg32 = write_le32;
+
+   mem = in_le32 ((unsigned __iomem *)(sm501.isaBase + 0x10));
+   mem = (mem  0xe000)  13;
+   switch (mem) {
+   case 1:
+   mem = 8;
+   break;
+   case 2:
+   mem = 16;
+   break;
+   case 3:
+   mem = 32;
+   break;
+   case 4:
+   mem = 64;
+   break;
+   case 5:
+   mem = 2;
+   break;
+   case 0:
+   default:
+   mem = 4;
+   }
+   printf (PCI SM50%d %d MB\n, ((id  0xff) == 0xC0) ? 2 : 1, mem);
+not_pci:
+#endif
/*
 * Initialization of the access to the graphic chipset Retreive base
 * address of the chipset (see board/RPXClassic/eccx.c)
 */
-   if ((sm501.isaBase = board_video_init ()) == 0) {
-   return (NULL);
+   if (!sm501.isaBase) {
+   sm501.isaBase = board_video_init ();
+   if (!sm501.isaBase)
+   return NULL;
}
 
-   if ((sm501.frameAdrs = board_video_get_fb ()) == 0) {
-   return (NULL);
+   if (!sm501.frameAdrs) {
+   sm501.frameAdrs = board_video_get_fb ();
+   if (!sm501.frameAdrs)
+   return NULL;
}
 
sm501.winSizeX = board_get_width ();
diff --git a/include/pci_ids.h b/include/pci_ids.h
index edfdc1e..dcc381d 100644
--- a/include/pci_ids.h
+++ b/include/pci_ids.h
@@ -1454,6 +1454,7 @@
 #define PCI_DEVICE_ID_SMI_710  0x0710
 #define PCI_DEVICE_ID_SMI_712  0x0712
 #define PCI_DEVICE_ID_SMI_810  0x0810
+#define PCI_DEVICE_ID_SMI_501  0x0501
 
 #define PCI_VENDOR_ID_HUGHES   0x1273
 #define PCI_DEVICE_ID_HUGHES_DIRECPC   0x0002
-- 
1.6.2.5

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