| Message ID | 20230614073125.17958-11-shawn.sung@mediatek.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Add display driver for MT8188 VDOSYS1 | expand |
Il 14/06/23 09:31, Hsiao Chien Sung ha scritto: > - Reset ID must starts from 0 and be consecutive, but > the reset bits in our hardware design is not continuous, > some bits are left unused, we need a map to solve the problem > - Use old style 1-to-1 mapping if .rst_tb is not defined > > Signed-off-by: Hsiao Chien Sung <shawn.sung@mediatek.com> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
diff --git a/drivers/soc/mediatek/mtk-mmsys.c b/drivers/soc/mediatek/mtk-mmsys.c index 3a81ef2bcc3c..13249658721f 100644 --- a/drivers/soc/mediatek/mtk-mmsys.c +++ b/drivers/soc/mediatek/mtk-mmsys.c @@ -314,6 +314,15 @@ static int mtk_mmsys_reset_update(struct reset_controller_dev *rcdev, unsigned l u32 offset; u32 reg; + if (mmsys->data->rst_tb) { + if (id >= mmsys->data->num_resets) { + dev_err(rcdev->dev, "Invalid reset ID: %lu (>=%u)\n", + id, mmsys->data->num_resets); + return -EINVAL; + } + id = mmsys->data->rst_tb[id]; + } + offset = (id / MMSYS_SW_RESET_PER_REG) * sizeof(u32); id = id % MMSYS_SW_RESET_PER_REG; reg = mmsys->data->sw0_rst_offset + offset; diff --git a/drivers/soc/mediatek/mtk-mmsys.h b/drivers/soc/mediatek/mtk-mmsys.h index e4ab46017430..e18b355527de 100644 --- a/drivers/soc/mediatek/mtk-mmsys.h +++ b/drivers/soc/mediatek/mtk-mmsys.h @@ -119,6 +119,7 @@ struct mtk_mmsys_driver_data { const struct mtk_mmsys_routes *routes; const unsigned int num_routes; const u16 sw0_rst_offset; + const u8 *rst_tb; const u32 num_resets; const bool is_vppsys; const u8 vsync_len;
- Reset ID must starts from 0 and be consecutive, but the reset bits in our hardware design is not continuous, some bits are left unused, we need a map to solve the problem - Use old style 1-to-1 mapping if .rst_tb is not defined Signed-off-by: Hsiao Chien Sung <shawn.sung@mediatek.com> --- drivers/soc/mediatek/mtk-mmsys.c | 9 +++++++++ drivers/soc/mediatek/mtk-mmsys.h | 1 + 2 files changed, 10 insertions(+) -- 2.18.0