kevin/linux
1
Fork 0
Code

hwmon: (xgene) Migrate to use generic PCC shmem related macros

Browse Source 
Use the newly defined common and generic PCC shared memory region
related macros in this driver to replace the locally defined ones.

Cc: Jean Delvare <jdelvare@suse.com>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20230927-pcc_defines-v2-3-0b8ffeaef2e5@arm.com
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
This commit is contained in:
Sudeep Holla 2023-09-27 17:26:12 +01:00
parent 89a4ad1f43
commit 2cf39b806b
1 changed files with 5 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
drivers/hwmon/xgene-hwmon.c
View File

@ -57,12 +57,6 @@
(MSG_TYPE_SET(MSG_TYPE_PWRMGMT) | \
MSG_SUBTYPE_SET(hndl) | TPC_CMD_SET(cmd) | type)
/* PCC defines */
#define PCC_SIGNATURE_MASK 0x50424300
#define PCCC_GENERATE_DB_INT BIT(15)
#define PCCS_CMD_COMPLETE BIT(0)
#define PCCS_SCI_DOORBEL BIT(1)
#define PCCS_PLATFORM_NOTIFICATION BIT(3)
/*
* Arbitrary retries in case the remote processor is slow to respond
* to PCC commands
@ -142,15 +136,15 @@ static int xgene_hwmon_pcc_rd(struct xgene_hwmon_dev *ctx, u32 *msg)
/* Write signature for subspace */
WRITE_ONCE(generic_comm_base->signature,
cpu_to_le32(PCC_SIGNATURE_MASK | ctx->mbox_idx));
cpu_to_le32(PCC_SIGNATURE | ctx->mbox_idx));
/* Write to the shared command region */
WRITE_ONCE(generic_comm_base->command,
cpu_to_le16(MSG_TYPE(msg[0]) | PCCC_GENERATE_DB_INT));
cpu_to_le16(MSG_TYPE(msg[0]) | PCC_CMD_GENERATE_DB_INTR));
/* Flip CMD COMPLETE bit */
val = le16_to_cpu(READ_ONCE(generic_comm_base->status));
val &= ~PCCS_CMD_COMPLETE;
val &= ~PCC_STATUS_CMD_COMPLETE;
WRITE_ONCE(generic_comm_base->status, cpu_to_le16(val));
/* Copy the message to the PCC comm space */
@ -544,7 +538,7 @@ static void xgene_hwmon_pcc_rx_cb(struct mbox_client *cl, void *msg)
msg = generic_comm_base + 1;
/* Check if platform sends interrupt */
if (!xgene_word_tst_and_clr(&generic_comm_base->status,
PCCS_SCI_DOORBEL))
PCC_STATUS_SCI_DOORBELL))
return;
/*
@ -566,7 +560,7 @@ static void xgene_hwmon_pcc_rx_cb(struct mbox_client *cl, void *msg)
TPC_CMD(((u32 *)msg)[0]) == TPC_ALARM))) {
/* Check if platform completes command */
if (xgene_word_tst_and_clr(&generic_comm_base->status,
PCCS_CMD_COMPLETE)) {
PCC_STATUS_CMD_COMPLETE)) {
ctx->sync_msg.msg = ((u32 *)msg)[0];
ctx->sync_msg.param1 = ((u32 *)msg)[1];
ctx->sync_msg.param2 = ((u32 *)msg)[2];