[PATCH v6 12/16] soc: mediatek: cmdq: add write_s_mask value function
From: Dennis YC Hsieh <hidden>
Date: 2020-05-28 17:05:37
Also in:
dri-devel, linux-arm-kernel, linux-mediatek, lkml
Subsystem:
arm/mediatek soc support, the rest · Maintainers:
Matthias Brugger, AngeloGioacchino Del Regno, Linus Torvalds
add write_s_mask_value function in cmdq helper functions which writes a constant value to address with mask and large dma access support. Signed-off-by: Dennis YC Hsieh <redacted> --- drivers/soc/mediatek/mtk-cmdq-helper.c | 21 +++++++++++++++++++++ include/linux/soc/mediatek/mtk-cmdq.h | 15 +++++++++++++++ 2 files changed, 36 insertions(+)
diff --git a/drivers/soc/mediatek/mtk-cmdq-helper.c b/drivers/soc/mediatek/mtk-cmdq-helper.c
index 12095a1b701b..4b07da56c7bb 100644
--- a/drivers/soc/mediatek/mtk-cmdq-helper.c
+++ b/drivers/soc/mediatek/mtk-cmdq-helper.c@@ -293,6 +293,27 @@ int cmdq_pkt_write_s_value(struct cmdq_pkt *pkt, u8 high_addr_reg_idx, } EXPORT_SYMBOL(cmdq_pkt_write_s_value); +int cmdq_pkt_write_s_mask_value(struct cmdq_pkt *pkt, u8 high_addr_reg_idx, + u16 addr_low, u32 value, u32 mask) +{ + struct cmdq_instruction inst = { {0} }; + int err; + + inst.op = CMDQ_CODE_MASK; + inst.mask = ~mask; + err = cmdq_pkt_append_command(pkt, inst); + if (err < 0) + return err; + + inst.op = CMDQ_CODE_WRITE_S_MASK; + inst.sop = high_addr_reg_idx; + inst.offset = addr_low; + inst.value = value; + + return cmdq_pkt_append_command(pkt, inst); +} +EXPORT_SYMBOL(cmdq_pkt_write_s_mask_value); + int cmdq_pkt_wfe(struct cmdq_pkt *pkt, u16 event) { struct cmdq_instruction inst = { {0} };
diff --git a/include/linux/soc/mediatek/mtk-cmdq.h b/include/linux/soc/mediatek/mtk-cmdq.h
index bb36750be58c..28a50c3cf6a1 100644
--- a/include/linux/soc/mediatek/mtk-cmdq.h
+++ b/include/linux/soc/mediatek/mtk-cmdq.h@@ -165,6 +165,21 @@ int cmdq_pkt_write_s_mask(struct cmdq_pkt *pkt, u16 high_addr_reg_idx, int cmdq_pkt_write_s_value(struct cmdq_pkt *pkt, u8 high_addr_reg_idx, u16 addr_low, u32 value); +/** + * cmdq_pkt_write_s_mask_value() - append write_s command with mask to the CMDQ + * packet which write value to a physical + * address + * @pkt: the CMDQ packet + * @high_addr_reg_idx: internal register ID which contains high address of pa + * @addr_low: low address of pa + * @value: the specified target value + * @mask: the specified target mask + * + * Return: 0 for success; else the error code is returned + */ +int cmdq_pkt_write_s_mask_value(struct cmdq_pkt *pkt, u8 high_addr_reg_idx, + u16 addr_low, u32 value, u32 mask); + /** * cmdq_pkt_wfe() - append wait for event command to the CMDQ packet * @pkt: the CMDQ packet
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2.18.0