Il 18/02/25 06:41, Jason-JH Lin ha scritto:
To support hardware without subsys IDs on new SoCs, add a programming flow that checks whether the subsys ID is valid. If the subsys ID is invalid, the flow will call 2 alternative CMDQ APIs: cmdq_pkt_assign() and cmdq_pkt_write_s_value() to achieve the same functionality.Signed-off-by: Jason-JH Lin <jason-jh....@mediatek.com> --- drivers/soc/mediatek/mtk-mmsys.c | 14 +++++++++++--- drivers/soc/mediatek/mtk-mutex.c | 11 +++++++++-- 2 files changed, 20 insertions(+), 5 deletions(-) diff --git a/drivers/soc/mediatek/mtk-mmsys.c b/drivers/soc/mediatek/mtk-mmsys.c index bb4639ca0b8c..ce949b863b05 100644 --- a/drivers/soc/mediatek/mtk-mmsys.c +++ b/drivers/soc/mediatek/mtk-mmsys.c @@ -167,9 +167,17 @@ static void mtk_mmsys_update_bits(struct mtk_mmsys *mmsys, u32 offset, u32 mask, u32 tmp;if (mmsys->cmdq_base.size && cmdq_pkt) {- ret = cmdq_pkt_write_mask(cmdq_pkt, mmsys->cmdq_base.subsys, - mmsys->cmdq_base.offset + offset, val, - mask); + offset += mmsys->cmdq_base.offset; + if (mmsys->cmdq_base.subsys != CMDQ_SUBSYS_INVALID) {
You're still anyway passing the subsys to cmdq_pkt_write_mask(), right?! Why don't you just handle this in cmdq_pkt_write_mask() then? ;-) I can see this pattern being repeated over and over in both drm/mediatek and MDP3 drivers, and it's not necessary to duplicate this many times when you can write it just once. Would've also been faster for you to implement... :-D Cheers, Angelo
+ ret = cmdq_pkt_write_mask(cmdq_pkt, mmsys->cmdq_base.subsys, + offset, val, mask); + } else { + /* only MMIO access, no need to check mminfro_offset */ + ret = cmdq_pkt_assign(cmdq_pkt, CMDQ_THR_SPR_IDX0, + CMDQ_ADDR_HIGH(mmsys->cmdq_base.pa_base)); + ret |= cmdq_pkt_write_s_mask_value(cmdq_pkt, CMDQ_THR_SPR_IDX0, + CMDQ_ADDR_LOW(offset), val, mask); + } if (ret) pr_debug("CMDQ unavailable: using CPU write\n"); else diff --git a/drivers/soc/mediatek/mtk-mutex.c b/drivers/soc/mediatek/mtk-mutex.c index 5250c1d702eb..3788b16efbf4 100644 --- a/drivers/soc/mediatek/mtk-mutex.c +++ b/drivers/soc/mediatek/mtk-mutex.c @@ -963,6 +963,7 @@ int mtk_mutex_enable_by_cmdq(struct mtk_mutex *mutex, void *pkt) struct mtk_mutex_ctx *mtx = container_of(mutex, struct mtk_mutex_ctx, mutex[mutex->id]); struct cmdq_pkt *cmdq_pkt = (struct cmdq_pkt *)pkt; + dma_addr_t en_addr = mtx->addr + DISP_REG_MUTEX_EN(mutex->id);WARN_ON(&mtx->mutex[mutex->id] != mutex); @@ -971,8 +972,14 @@ int mtk_mutex_enable_by_cmdq(struct mtk_mutex *mutex, void *pkt)return -ENODEV; }- cmdq_pkt_write(cmdq_pkt, mtx->cmdq_reg.subsys,- mtx->addr + DISP_REG_MUTEX_EN(mutex->id), 1); + if (mtx->cmdq_reg.subsys != CMDQ_SUBSYS_INVALID) { + cmdq_pkt_write(cmdq_pkt, mtx->cmdq_reg.subsys, en_addr, 1); + } else { + /* only MMIO access, no need to check mminfro_offset */ + cmdq_pkt_assign(cmdq_pkt, CMDQ_THR_SPR_IDX0, CMDQ_ADDR_HIGH(en_addr)); + cmdq_pkt_write_s_value(cmdq_pkt, CMDQ_THR_SPR_IDX0, CMDQ_ADDR_LOW(en_addr), 1); + } + return 0; } EXPORT_SYMBOL_GPL(mtk_mutex_enable_by_cmdq);
