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authorAnatolij Gustschin <agust@denx.de>2010-05-26 10:38:57 +0200
committerAnatolij Gustschin <agust@denx.de>2010-06-14 12:29:26 +0200
commite2bee9e3c0f4bd363207ce5e496cef2134f67d28 (patch)
tree4a46d4060c5be02d1d0dfa566529bc80afdc2b35 /drivers
parent105438200744ca81199606a7b62c9eb07ac6efbd (diff)
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video: sm501: add support for SM501 chips on PCI bus
Signed-off-by: Anatolij Gustschin <agust@denx.de>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/video/sm501.c89
1 files changed, 84 insertions, 5 deletions
diff --git a/drivers/video/sm501.c b/drivers/video/sm501.c
index 8c96316..f55bf3c 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 & 0x0000e000) >> 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 ();