diff options
| author | Bjorn Andersson <bjorn.andersson@linaro.org> | 2021-10-01 20:43:59 +0300 |
|---|---|---|
| committer | Rob Clark <robdclark@chromium.org> | 2021-10-15 23:26:34 +0300 |
| commit | 060c160fbb99887b31320e7c7693d4da3fc81dfe (patch) | |
| tree | 5ae238bb5ab97bb261912adeb5c52eb1b81be6b7 /drivers/gpu/drm/msm/dp/dp_parser.c | |
| parent | ef501dbf84cb36a9d5fb3971d8dd1b71eb20a5f8 (diff) | |
| download | linux-060c160fbb99887b31320e7c7693d4da3fc81dfe.tar.xz | |
drm/msm/dp: Store each subblock in the io region
Not all platforms has DP_P0 at offset 0x1000 from the beginning of the
DP block. So split the dss_io_data memory region into a set of
sub-regions, to make it possible in the next patch to specify each of
the sub-regions individually.
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20211001174400.981707-5-bjorn.andersson@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
Diffstat (limited to 'drivers/gpu/drm/msm/dp/dp_parser.c')
| -rw-r--r-- | drivers/gpu/drm/msm/dp/dp_parser.c | 28 |
1 files changed, 25 insertions, 3 deletions
diff --git a/drivers/gpu/drm/msm/dp/dp_parser.c b/drivers/gpu/drm/msm/dp/dp_parser.c index c05ba1990218..1f084b2b5bd3 100644 --- a/drivers/gpu/drm/msm/dp/dp_parser.c +++ b/drivers/gpu/drm/msm/dp/dp_parser.c @@ -11,6 +11,15 @@ #include "dp_parser.h" #include "dp_reg.h" +#define DP_DEFAULT_AHB_OFFSET 0x0000 +#define DP_DEFAULT_AHB_SIZE 0x0200 +#define DP_DEFAULT_AUX_OFFSET 0x0200 +#define DP_DEFAULT_AUX_SIZE 0x0200 +#define DP_DEFAULT_LINK_OFFSET 0x0400 +#define DP_DEFAULT_LINK_SIZE 0x0C00 +#define DP_DEFAULT_P0_OFFSET 0x1000 +#define DP_DEFAULT_P0_SIZE 0x0400 + static const struct dp_regulator_cfg sdm845_dp_reg_cfg = { .num = 2, .regs = { @@ -37,9 +46,22 @@ static int dp_parser_ctrl_res(struct dp_parser *parser) struct dp_io *io = &parser->io; struct dss_io_data *dss = &io->dp_controller; - dss->base = dp_ioremap(pdev, 0, &dss->len); - if (IS_ERR(dss->base)) - return PTR_ERR(dss->base); + dss->ahb.base = dp_ioremap(pdev, 0, &dss->ahb.len); + if (IS_ERR(dss->ahb.base)) + return PTR_ERR(dss->ahb.base); + + if (dss->ahb.len < DP_DEFAULT_P0_OFFSET + DP_DEFAULT_P0_SIZE) { + DRM_ERROR("legacy memory region not large enough\n"); + return -EINVAL; + } + + dss->ahb.len = DP_DEFAULT_AHB_SIZE; + dss->aux.base = dss->ahb.base + DP_DEFAULT_AUX_OFFSET; + dss->aux.len = DP_DEFAULT_AUX_SIZE; + dss->link.base = dss->ahb.base + DP_DEFAULT_LINK_OFFSET; + dss->link.len = DP_DEFAULT_LINK_SIZE; + dss->p0.base = dss->ahb.base + DP_DEFAULT_P0_OFFSET; + dss->p0.len = DP_DEFAULT_P0_SIZE; io->phy = devm_phy_get(&pdev->dev, "dp"); if (IS_ERR(io->phy)) |