soc: mediatek: cmdq: add write_s_mask value function

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 <dennis-yc.hsieh@mediatek.com>
Link: https://lore.kernel.org/r/1594136714-11650-7-git-send-email-dennis-yc.hsieh@mediatek.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

diff --git a/drivers/soc/mediatek/mtk-cmdq-helper.c b/drivers/soc/mediatek/mtk-cmdq-helper.c
index 4e86b65815fc687273c1f772afca59ba8945e06e..b6e25f216605ebc5702b5de7c7e4c75e5837cd93 100644 (file)
--- a/drivers/soc/mediatek/mtk-cmdq-helper.c
+++ b/drivers/soc/mediatek/mtk-cmdq-helper.c
@@ -294,6 +294,27 @@ 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 = {};
+       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 ae73e10da274e20eddc3c2c84cee8b1ba04469bf..d9390d76ee145950a8659e34c5de339f3caae2dd 100644 (file)
--- a/include/linux/soc/mediatek/mtk-cmdq.h
+++ b/include/linux/soc/mediatek/mtk-cmdq.h
@@ -164,6 +164,21 @@ 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