From 5f6e560c2dd5be3ae446f20ae97263cbfa309630 Mon Sep 17 00:00:00 2001 From: Dennis YC Hsieh Date: Tue, 7 Jul 2020 23:45:07 +0800 Subject: soc: mediatek: cmdq: add write_s function add write_s function in cmdq helper functions which writes value contains in internal register to address with large dma access support. Signed-off-by: Dennis YC Hsieh Link: https://lore.kernel.org/r/1594136714-11650-3-git-send-email-dennis-yc.hsieh@mediatek.com Signed-off-by: Matthias Brugger --- include/linux/mailbox/mtk-cmdq-mailbox.h | 1 + include/linux/soc/mediatek/mtk-cmdq.h | 19 +++++++++++++++++++ 2 files changed, 20 insertions(+) (limited to 'include') diff --git a/include/linux/mailbox/mtk-cmdq-mailbox.h b/include/linux/mailbox/mtk-cmdq-mailbox.h index 05eea1aef5aa..1f76cfedb16d 100644 --- a/include/linux/mailbox/mtk-cmdq-mailbox.h +++ b/include/linux/mailbox/mtk-cmdq-mailbox.h @@ -60,6 +60,7 @@ enum cmdq_code { CMDQ_CODE_JUMP = 0x10, CMDQ_CODE_WFE = 0x20, CMDQ_CODE_EOC = 0x40, + CMDQ_CODE_WRITE_S = 0x90, CMDQ_CODE_LOGIC = 0xa0, }; diff --git a/include/linux/soc/mediatek/mtk-cmdq.h b/include/linux/soc/mediatek/mtk-cmdq.h index 2249ecaf77e4..9b0c57a0063d 100644 --- a/include/linux/soc/mediatek/mtk-cmdq.h +++ b/include/linux/soc/mediatek/mtk-cmdq.h @@ -12,6 +12,8 @@ #include #define CMDQ_NO_TIMEOUT 0xffffffffu +#define CMDQ_ADDR_HIGH(addr) ((u32)(((addr) >> 16) & GENMASK(31, 0))) +#define CMDQ_ADDR_LOW(addr) ((u16)(addr) | BIT(1)) struct cmdq_pkt; @@ -102,6 +104,23 @@ int cmdq_pkt_write(struct cmdq_pkt *pkt, u8 subsys, u16 offset, u32 value); int cmdq_pkt_write_mask(struct cmdq_pkt *pkt, u8 subsys, u16 offset, u32 value, u32 mask); +/** + * cmdq_pkt_write_s() - append write_s command to the CMDQ packet + * @pkt: the CMDQ packet + * @high_addr_reg_idx: internal register ID which contains high address of pa + * @addr_low: low address of pa + * @src_reg_idx: the CMDQ internal register ID which cache source value + * + * Return: 0 for success; else the error code is returned + * + * Support write value to physical address without subsys. Use CMDQ_ADDR_HIGH() + * to get high address and call cmdq_pkt_assign() to assign value into internal + * reg. Also use CMDQ_ADDR_LOW() to get low address for addr_low parameter when + * call to this function. + */ +int cmdq_pkt_write_s(struct cmdq_pkt *pkt, u16 high_addr_reg_idx, + u16 addr_low, u16 src_reg_idx); + /** * cmdq_pkt_wfe() - append wait for event command to the CMDQ packet * @pkt: the CMDQ packet -- cgit