diff options
Diffstat (limited to 'drivers/soc/mediatek/mtk-mmsys.h')
| -rw-r--r-- | drivers/soc/mediatek/mtk-mmsys.h | 50 |
1 files changed, 49 insertions, 1 deletions
diff --git a/drivers/soc/mediatek/mtk-mmsys.h b/drivers/soc/mediatek/mtk-mmsys.h index 77f37f8c715b..fe628d5f5198 100644 --- a/drivers/soc/mediatek/mtk-mmsys.h +++ b/drivers/soc/mediatek/mtk-mmsys.h @@ -78,6 +78,22 @@ #define DSI_SEL_IN_RDMA 0x1 #define DSI_SEL_IN_MASK 0x1 +#define MMSYS_RST_NR(bank, bit) (((bank) * 32) + (bit)) + +/* + * This macro adds a compile time check to make sure that the in/out + * selection bit(s) fit in the register mask, similar to bitfield + * macros, but this does not transform the value. + */ +#define MMSYS_ROUTE(from, to, reg_addr, reg_mask, selection) \ + { DDP_COMPONENT_##from, DDP_COMPONENT_##to, reg_addr, reg_mask, \ + (__BUILD_BUG_ON_ZERO_MSG((reg_mask) == 0, "Invalid mask") + \ + __BUILD_BUG_ON_ZERO_MSG(~(reg_mask) & (selection), \ + #selection " does not fit in " \ + #reg_mask) + \ + (selection)) \ + } + struct mtk_mmsys_routes { u32 from_comp; u32 to_comp; @@ -86,15 +102,47 @@ struct mtk_mmsys_routes { u32 val; }; +/** + * struct mtk_mmsys_driver_data - Settings of the mmsys + * @clk_driver: Clock driver name that the mmsys is using + * (defined in drivers/clk/mediatek/clk-*.c). + * @routes: Routing table of the mmsys. + * It provides mux settings from one module to another. + * @num_routes: Array size of the routes. + * @sw0_rst_offset: Register offset for the reset control. + * @num_resets: Number of reset bits that are defined + * @is_vppsys: Whether the mmsys is VPPSYS (Video Processing Pipe) + * or VDOSYS (Video). Only VDOSYS needs to be added to drm driver. + * @vsync_len: VSYNC length of the MIXER. + * VSYNC is usually triggered by the connector, so its length is a + * fixed value when the frame rate is decided, but ETHDR and + * MIXER generate their own VSYNC due to hardware design, therefore + * MIXER has to sync with ETHDR by adjusting VSYNC length. + * On MT8195, there is no such setting so we use the gap between + * falling edge and rising edge of SOF (Start of Frame) signal to + * do the job, but since MT8188, VSYNC_LEN setting is introduced to + * solve the problem and is given 0x40 (ticks) as the default value. + * Please notice that this value has to be set to 1 (minimum) if + * ETHDR is bypassed, otherwise MIXER could wait too long and causing + * underflow. + * + * Each MMSYS (multi-media system) may have different settings, they may use + * different clock sources, mux settings, reset control ...etc., and these + * differences are all stored here. + */ struct mtk_mmsys_driver_data { const char *clk_driver; 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; }; /* - * Routes in mt8173, mt2701, mt2712 are different. That means + * Routes in mt2701 and mt2712 are different. That means * in the same register address, it controls different input/output * selection for each SoC. But, right now, they use the same table as * default routes meet their requirements. But we don't have the complete |