linux-kernel - [PATCH 15/16] soundwire: cadence: split access to IP_MCP

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Message-Id: <20230314015410.487311-16-yung-chuan.liao@linux.intel.com>
Date:   Tue, 14 Mar 2023 09:54:09 +0800
From:   Bard Liao <yung-chuan.liao@...ux.intel.com>
To:     alsa-devel@...a-project.org, vkoul@...nel.org
Cc:     vinod.koul@...aro.org, linux-kernel@...r.kernel.org,
        pierre-louis.bossart@...ux.intel.com, bard.liao@...el.com
Subject: [PATCH 15/16] soundwire: cadence: split access to IP_MCP_CMDCTRL fields

From: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>

The latest Cadence IP splits the MCP_CMDCTRL fields in two registers:
MCP_CMDCTRL and IP_MCP_CMDCTRL. Rename the relevant fields and change
the access methods used for those fields.

In practice we only use the Parity error insertion in IP_CMD_CTRL.

For existing solutions, this is an iso-functionality change.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
Reviewed-by: Rander Wang <rander.wang@...el.com>
Signed-off-by: Bard Liao <yung-chuan.liao@...ux.intel.com>
---
 drivers/soundwire/cadence_master.c | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/drivers/soundwire/cadence_master.c b/drivers/soundwire/cadence_master.c
index 4c82712944b9..5128923f051e 100644
--- a/drivers/soundwire/cadence_master.c
+++ b/drivers/soundwire/cadence_master.c
@@ -54,9 +54,9 @@ MODULE_PARM_DESC(cdns_mcp_int_mask, "Cadence MCP IntMask");
 #define CDNS_IP_MCP_CONTROL_CMD_ACCEPT		BIT(1)
 #define CDNS_IP_MCP_CONTROL_BLOCK_WAKEUP	BIT(0)
 
-#define CDNS_MCP_CMDCTRL			0x8
+#define CDNS_IP_MCP_CMDCTRL			0x8 /* IP offset added at run-time */
 
-#define CDNS_MCP_CMDCTRL_INSERT_PARITY_ERR	BIT(2)
+#define CDNS_IP_MCP_CMDCTRL_INSERT_PARITY_ERR	BIT(2)
 
 #define CDNS_MCP_SSPSTAT			0xC
 #define CDNS_MCP_FRAME_SHAPE			0x10
@@ -428,9 +428,9 @@ static int cdns_parity_error_injection(void *data, u64 value)
 	mutex_lock(&bus->bus_lock);
 
 	/* program hardware to inject parity error */
-	cdns_updatel(cdns, CDNS_MCP_CMDCTRL,
-		     CDNS_MCP_CMDCTRL_INSERT_PARITY_ERR,
-		     CDNS_MCP_CMDCTRL_INSERT_PARITY_ERR);
+	cdns_ip_updatel(cdns, CDNS_IP_MCP_CMDCTRL,
+			CDNS_IP_MCP_CMDCTRL_INSERT_PARITY_ERR,
+			CDNS_IP_MCP_CMDCTRL_INSERT_PARITY_ERR);
 
 	/* commit changes */
 	cdns_updatel(cdns, CDNS_MCP_CONFIG_UPDATE,
@@ -442,9 +442,9 @@ static int cdns_parity_error_injection(void *data, u64 value)
 	dev_info(cdns->dev, "parity error injection, read: %d\n", ret);
 
 	/* program hardware to disable parity error */
-	cdns_updatel(cdns, CDNS_MCP_CMDCTRL,
-		     CDNS_MCP_CMDCTRL_INSERT_PARITY_ERR,
-		     0);
+	cdns_ip_updatel(cdns, CDNS_IP_MCP_CMDCTRL,
+			CDNS_IP_MCP_CMDCTRL_INSERT_PARITY_ERR,
+			0);
 
 	/* commit changes */
 	cdns_updatel(cdns, CDNS_MCP_CONFIG_UPDATE,
-- 
2.25.1