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soc: mediatek: cmdq: add assign function

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Add assign function in cmdq helper which assign constant value into
internal register by index.

Signed-off-by: Dennis YC Hsieh <dennis-yc.hsieh@mediatek.com>
Link: https://lore.kernel.org/r/1592749115-24158-3-git-send-email-dennis-yc.hsieh@mediatek.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
This commit is contained in:
Dennis YC Hsieh 2020-06-21 22:18:26 +08:00 committed by Matthias Brugger
parent b3a9e3b962
commit 613c2e2c7e
3 changed files with 38 additions and 1 deletions
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24
drivers/soc/mediatek/mtk-cmdq-helper.c
View File

@ -12,6 +12,7 @@
#define CMDQ_WRITE_ENABLE_MASK BIT(0)
#define CMDQ_POLL_ENABLE_MASK BIT(0)
#define CMDQ_EOC_IRQ_EN BIT(0)
#define CMDQ_REG_TYPE 1
struct cmdq_instruction {
union {
@ -21,8 +22,17 @@ struct cmdq_instruction {
union {
u16 offset;
u16 event;
u16 reg_dst;
};
union {
u8 subsys;
struct {
u8 sop:5;
u8 arg_c_t:1;
u8 src_t:1;
u8 dst_t:1;
};
};
u8 subsys;
u8 op;
};
@ -278,6 +288,18 @@ int cmdq_pkt_poll_mask(struct cmdq_pkt *pkt, u8 subsys,
}
EXPORT_SYMBOL(cmdq_pkt_poll_mask);
int cmdq_pkt_assign(struct cmdq_pkt *pkt, u16 reg_idx, u32 value)
{
struct cmdq_instruction inst = {};
inst.op = CMDQ_CODE_LOGIC;
inst.dst_t = CMDQ_REG_TYPE;
inst.reg_dst = reg_idx;
inst.value = value;
return cmdq_pkt_append_command(pkt, inst);
}
EXPORT_SYMBOL(cmdq_pkt_assign);
static int cmdq_pkt_finalize(struct cmdq_pkt *pkt)
{
struct cmdq_instruction inst = { {0} };

1
include/linux/mailbox/mtk-cmdq-mailbox.h
View File

@ -59,6 +59,7 @@ enum cmdq_code {
CMDQ_CODE_JUMP = 0x10,
CMDQ_CODE_WFE = 0x20,
CMDQ_CODE_EOC = 0x40,
CMDQ_CODE_LOGIC = 0xa0,
};
enum cmdq_cb_status {

14
include/linux/soc/mediatek/mtk-cmdq.h
View File

@ -152,6 +152,20 @@ int cmdq_pkt_poll(struct cmdq_pkt *pkt, u8 subsys,
*/
int cmdq_pkt_poll_mask(struct cmdq_pkt *pkt, u8 subsys,
u16 offset, u32 value, u32 mask);
/**
* cmdq_pkt_assign() - Append logic assign command to the CMDQ packet, ask GCE
* to execute an instruction that set a constant value into
* internal register and use as value, mask or address in
* read/write instruction.
* @pkt: the CMDQ packet
* @reg_idx: the CMDQ internal register ID
* @value: the specified value
*
* Return: 0 for success; else the error code is returned
*/
int cmdq_pkt_assign(struct cmdq_pkt *pkt, u16 reg_idx, u32 value);
/**
* cmdq_pkt_flush_async() - trigger CMDQ to asynchronously execute the CMDQ
* packet and call back at the end of done packet