diff options
Diffstat (limited to 'src/southbridge/amd/rs780')
| -rw-r--r-- | src/southbridge/amd/rs780/gfx.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/src/southbridge/amd/rs780/gfx.c b/src/southbridge/amd/rs780/gfx.c index f70cd9bb79..da553529d0 100644 --- a/src/southbridge/amd/rs780/gfx.c +++ b/src/southbridge/amd/rs780/gfx.c @@ -760,6 +760,23 @@ static void internal_gfx_pci_dev_init(struct device *dev) clkind_write(dev, 0x5C, 0x0); } +/** + * Set registers in RS780 and CPU to disable the internal GFX. + * Please refer to `rs780_internal_gfx_enable()`. + */ +static void rs780_internal_gfx_disable(device_t dev) +{ + u32 l_dword; + device_t nb_dev = dev_find_slot(0, 0); + + /* Disable internal GFX and enable external GFX. */ + l_dword = pci_read_config32(nb_dev, 0x8c); + l_dword |= 1<<0; + l_dword &= ~(1<<1); + pci_write_config32(nb_dev, 0x8c, l_dword); + + dev->enabled = 0; +} /* * Set registers in RS780 and CPU to enable the internal GFX. @@ -999,6 +1016,7 @@ static struct device_operations pcie_ops = { .init = internal_gfx_pci_dev_init, /* The option ROM initializes the device. rs780_gfx_init, */ .scan_bus = 0, .enable = rs780_internal_gfx_enable, + .disable = rs780_internal_gfx_disable, .ops_pci = &lops_pci, }; |