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ARM: tegra: Special-case the 3D clamps on Tegra124 

A separate register is used to remove the clamps for the GPU on
Tegra124. In order to be able to use the same API, special-case
this particular partition.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
This commit is contained in:
Thierry Reding 2013-12-13 17:31:04 +01:00 committed by Stephen Warren
parent 9a71657966
commit c537376cbb
1 changed files with 13 additions and 0 deletions
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13
arch/arm/mach-tegra/powergate.c
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@ -41,6 +41,8 @@
#define PWRGATE_STATUS 0x38
#define GPU_RG_CNTRL 0x2d4
static int tegra_num_powerdomains;
static int tegra_num_cpu_domains;
static const u8 *tegra_cpu_domains;
@ -136,6 +138,17 @@ int tegra_powergate_remove_clamping(int id)
if (id < 0 || id >= tegra_num_powerdomains)
return -EINVAL;
/*
* The Tegra124 GPU has a separate register (with different semantics)
* to remove clamps.
*/
if (tegra_chip_id == TEGRA124) {
if (id == TEGRA_POWERGATE_3D) {
pmc_write(0, GPU_RG_CNTRL);
return 0;
}
}
/*
* Tegra 2 has a bug where PCIE and VDE clamping masks are
* swapped relatively to the partition ids