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video: sm501: add support for SM501 chips on PCI bus 

Signed-off-by: Anatolij Gustschin <agust@denx.de>
This commit is contained in:
Anatolij Gustschin 2010-05-26 10:38:57 +02:00
parent 1054382007
commit e2bee9e3c0
2 changed files with 85 additions and 5 deletions
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89
drivers/video/sm501.c
View File

@ -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 ();

1
include/pci_ids.h
View File

@ -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