add write_s function in cmdq helper functions which writes a constant value to address with large dma access support.
Signed-off-by: Dennis YC Hsieh dennis-yc.hsieh@mediatek.com Reviewed-by: CK Hu ck.hu@mediatek.com --- drivers/soc/mediatek/mtk-cmdq-helper.c | 26 ++++++++++++++++++++++++++ include/linux/soc/mediatek/mtk-cmdq.h | 14 ++++++++++++++ 2 files changed, 40 insertions(+)
diff --git a/drivers/soc/mediatek/mtk-cmdq-helper.c b/drivers/soc/mediatek/mtk-cmdq-helper.c index 03c129230cd7..a9ebbabb7439 100644 --- a/drivers/soc/mediatek/mtk-cmdq-helper.c +++ b/drivers/soc/mediatek/mtk-cmdq-helper.c @@ -269,6 +269,32 @@ int cmdq_pkt_write_s(struct cmdq_pkt *pkt, u16 high_addr_reg_idx, } EXPORT_SYMBOL(cmdq_pkt_write_s);
+int cmdq_pkt_write_s_value(struct cmdq_pkt *pkt, u16 high_addr_reg_idx, + u16 addr_low, u32 value, u32 mask) +{ + struct cmdq_instruction inst = { {0} }; + int err; + + if (mask != U32_MAX) { + 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; + } else { + inst.op = CMDQ_CODE_WRITE_S; + } + + 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_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 01b4184af310..fec292aac83c 100644 --- a/include/linux/soc/mediatek/mtk-cmdq.h +++ b/include/linux/soc/mediatek/mtk-cmdq.h @@ -135,6 +135,20 @@ int cmdq_pkt_read_s(struct cmdq_pkt *pkt, u16 high_addr_reg_idx, u16 addr_low, int cmdq_pkt_write_s(struct cmdq_pkt *pkt, u16 high_addr_reg_idx, u16 addr_low, u16 src_reg_idx, u32 mask);
+/** + * cmdq_pkt_write_s_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 regisger 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_value(struct cmdq_pkt *pkt, u16 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