Re: [PATCH 1/2] soundwire: qcom: define hardcoded version magic numbers

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On 22/02/2023 14:44, Krzysztof Kozlowski wrote:
Use a define instead of hard-coded register values for Soundwire
hardware version number, because it is a bit easier to read and allows
to drop explaining comment.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>
---

Thanks Krzysztof,

Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@xxxxxxxxxx>


--srini

  drivers/soundwire/qcom.c | 17 +++++++++--------
  1 file changed, 9 insertions(+), 8 deletions(-)

diff --git a/drivers/soundwire/qcom.c b/drivers/soundwire/qcom.c
index ba502129150d..79bebcecde6d 100644
--- a/drivers/soundwire/qcom.c
+++ b/drivers/soundwire/qcom.c
@@ -28,6 +28,9 @@
  #define SWRM_LINK_MANAGER_EE					0x018
  #define SWRM_EE_CPU						1
  #define SWRM_FRM_GEN_ENABLED					BIT(0)
+#define SWRM_VERSION_1_3_0					0x01030000
+#define SWRM_VERSION_1_5_1					0x01050001
+#define SWRM_VERSION_1_7_0					0x01070000
  #define SWRM_COMP_HW_VERSION					0x00
  #define SWRM_COMP_CFG_ADDR					0x04
  #define SWRM_COMP_CFG_IRQ_LEVEL_OR_PULSE_MSK			BIT(1)
@@ -351,8 +354,7 @@ static int qcom_swrm_cmd_fifo_wr_cmd(struct qcom_swrm_ctrl *swrm, u8 cmd_data,
  	/* Its assumed that write is okay as we do not get any status back */
  	swrm->reg_write(swrm, SWRM_CMD_FIFO_WR_CMD, val);
- /* version 1.3 or less */
-	if (swrm->version <= 0x01030000)
+	if (swrm->version <= SWRM_VERSION_1_3_0)
  		usleep_range(150, 155);
if (cmd_id == SWR_BROADCAST_CMD_ID) {
@@ -695,7 +697,7 @@ static int qcom_swrm_init(struct qcom_swrm_ctrl *ctrl)
  	u32p_replace_bits(&val, SWRM_DEF_CMD_NO_PINGS, SWRM_MCP_CFG_MAX_NUM_OF_CMD_NO_PINGS_BMSK);
  	ctrl->reg_write(ctrl, SWRM_MCP_CFG_ADDR, val);
- if (ctrl->version >= 0x01070000) {
+	if (ctrl->version >= SWRM_VERSION_1_7_0) {
  		ctrl->reg_write(ctrl, SWRM_LINK_MANAGER_EE, SWRM_EE_CPU);
  		ctrl->reg_write(ctrl, SWRM_MCP_BUS_CTRL,
  				SWRM_MCP_BUS_CLK_START << SWRM_EE_CPU);
@@ -704,8 +706,7 @@ static int qcom_swrm_init(struct qcom_swrm_ctrl *ctrl)
  	}
/* Configure number of retries of a read/write cmd */
-	if (ctrl->version >= 0x01050001) {
-		/* Only for versions >= 1.5.1 */
+	if (ctrl->version >= SWRM_VERSION_1_5_1) {
  		ctrl->reg_write(ctrl, SWRM_CMD_FIFO_CFG_ADDR,
  				SWRM_RD_WR_CMD_RETRIES |
  				SWRM_CONTINUE_EXEC_ON_CMD_IGNORE);
@@ -1239,7 +1240,7 @@ static int qcom_swrm_get_port_config(struct qcom_swrm_ctrl *ctrl)
  	ret = of_property_read_u8_array(np, "qcom,ports-block-pack-mode",
  					bp_mode, nports);
  	if (ret) {
-		if (ctrl->version <= 0x01030000)
+		if (ctrl->version <= SWRM_VERSION_1_3_0)
  			memset(bp_mode, SWR_INVALID_PARAM, QCOM_SDW_MAX_PORTS);
  		else
  			return ret;
@@ -1442,7 +1443,7 @@ static int qcom_swrm_probe(struct platform_device *pdev)
  	pm_runtime_enable(dev);
/* Clk stop is not supported on WSA Soundwire masters */
-	if (ctrl->version <= 0x01030000) {
+	if (ctrl->version <= SWRM_VERSION_1_3_0) {
  		ctrl->clock_stop_not_supported = true;
  	} else {
  		ctrl->reg_read(ctrl, SWRM_COMP_MASTER_ID, &val);
@@ -1527,7 +1528,7 @@ static int __maybe_unused swrm_runtime_resume(struct device *dev)
  	} else {
  		reset_control_reset(ctrl->audio_cgcr);
- if (ctrl->version >= 0x01070000) {
+		if (ctrl->version >= SWRM_VERSION_1_7_0) {
  			ctrl->reg_write(ctrl, SWRM_LINK_MANAGER_EE, SWRM_EE_CPU);
  			ctrl->reg_write(ctrl, SWRM_MCP_BUS_CTRL,
  					SWRM_MCP_BUS_CLK_START << SWRM_EE_CPU);



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