diff options
| author |   Craig Stout <cstout@chromium.org> | 2016-02-18 16:50:01 -0800 |
|---|---|---|
| committer |   Rob Clark <robdclark@gmail.com> | 2016-03-03 11:55:28 -0500 |
| commit | 38bbc55ef5858301f5da6f6261434033a30058f6 (patch) | |
| tree | 9e027880e705afdd073626be2d923c9e5e85170c /drivers/gpu/drm/msm/adreno/a4xx_gpu.c | |
| parent | drm/msm/adreno: support for adreno 430. (diff) | |
| download | linux-dev-38bbc55ef5858301f5da6f6261434033a30058f6.tar.xz linux-dev-38bbc55ef5858301f5da6f6261434033a30058f6.zip | |
drm/msm/adreno: add adreno430 power control
Signed-off-by: Craig Stout <cstout@chromium.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Diffstat (limited to 'drivers/gpu/drm/msm/adreno/a4xx_gpu.c')
| -rw-r--r-- | drivers/gpu/drm/msm/adreno/a4xx_gpu.c | 39 |
1 files changed, 37 insertions, 2 deletions
diff --git a/drivers/gpu/drm/msm/adreno/a4xx_gpu.c b/drivers/gpu/drm/msm/adreno/a4xx_gpu.c index 84066cbf0e10..c0d4c7ee94e6 100644 --- a/drivers/gpu/drm/msm/adreno/a4xx_gpu.c +++ b/drivers/gpu/drm/msm/adreno/a4xx_gpu.c @@ -543,12 +543,47 @@ static void a4xx_dump(struct msm_gpu *gpu) adreno_dump(gpu); } +static int a4xx_pm_resume(struct msm_gpu *gpu) { + struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu); + int ret; + + ret = msm_gpu_pm_resume(gpu); + if (ret) + return ret; + + if (adreno_is_a430(adreno_gpu)) { + unsigned int reg; + /* Set the default register values; set SW_COLLAPSE to 0 */ + gpu_write(gpu, REG_A4XX_RBBM_POWER_CNTL_IP, 0x778000); + do { + udelay(5); + reg = gpu_read(gpu, REG_A4XX_RBBM_POWER_STATUS); + } while (!(reg & A4XX_RBBM_POWER_CNTL_IP_SP_TP_PWR_ON)); + } + return 0; +} + +static int a4xx_pm_suspend(struct msm_gpu *gpu) { + struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu); + int ret; + + ret = msm_gpu_pm_suspend(gpu); + if (ret) + return ret; + + if (adreno_is_a430(adreno_gpu)) { + /* Set the default register values; set SW_COLLAPSE to 1 */ + gpu_write(gpu, REG_A4XX_RBBM_POWER_CNTL_IP, 0x778001); + } + return 0; +} + static const struct adreno_gpu_funcs funcs = { .base = { .get_param = adreno_get_param, .hw_init = a4xx_hw_init, - .pm_suspend = msm_gpu_pm_suspend, - .pm_resume = msm_gpu_pm_resume, + .pm_suspend = a4xx_pm_suspend, + .pm_resume = a4xx_pm_resume, .recover = a4xx_recover, .last_fence = adreno_last_fence, .submit = adreno_submit, |