[PATCH 07/15] usb: typec: tcpci: use GENMASK() for TCPC_TRANSMIT register fields

From: André Draszik
Date: Wed Jul 10 2024 - 06:41:11 EST


Convert all fields from register TCPC_TRANSMIT to using GENMASK() and
FIELD_PREP() so as to keep using a similar approach throughout the code
base and make it arguably easier to read.

Signed-off-by: André Draszik <andre.draszik@xxxxxxxxxx>
---
drivers/usb/typec/tcpm/tcpci.c | 7 +++++--
include/linux/usb/tcpci.h | 6 ++----
2 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/drivers/usb/typec/tcpm/tcpci.c b/drivers/usb/typec/tcpm/tcpci.c
index ad5c9d5bf6a9..b9ee9ccff99b 100644
--- a/drivers/usb/typec/tcpm/tcpci.c
+++ b/drivers/usb/typec/tcpm/tcpci.c
@@ -607,8 +607,11 @@ static int tcpci_pd_transmit(struct tcpc_dev *tcpc, enum tcpm_transmit_type type
}

/* nRetryCount is 3 in PD2.0 spec where 2 in PD3.0 spec */
- reg = ((negotiated_rev > PD_REV20 ? PD_RETRY_COUNT_3_0_OR_HIGHER : PD_RETRY_COUNT_DEFAULT)
- << TCPC_TRANSMIT_RETRY_SHIFT) | (type << TCPC_TRANSMIT_TYPE_SHIFT);
+ reg = FIELD_PREP(TCPC_TRANSMIT_RETRY,
+ (negotiated_rev > PD_REV20
+ ? PD_RETRY_COUNT_3_0_OR_HIGHER
+ : PD_RETRY_COUNT_DEFAULT));
+ reg |= FIELD_PREP(TCPC_TRANSMIT_TYPE, type);
ret = regmap_write(tcpci->regmap, TCPC_TRANSMIT, reg);
if (ret < 0)
return ret;
diff --git a/include/linux/usb/tcpci.h b/include/linux/usb/tcpci.h
index 3cd61e9f73b3..f7f5cfbdef12 100644
--- a/include/linux/usb/tcpci.h
+++ b/include/linux/usb/tcpci.h
@@ -148,10 +148,8 @@
#define TCPC_RX_DATA 0x34 /* through 0x4f */

#define TCPC_TRANSMIT 0x50
-#define TCPC_TRANSMIT_RETRY_SHIFT 4
-#define TCPC_TRANSMIT_RETRY_MASK 0x3
-#define TCPC_TRANSMIT_TYPE_SHIFT 0
-#define TCPC_TRANSMIT_TYPE_MASK 0x7
+#define TCPC_TRANSMIT_RETRY GENMASK(5, 4)
+#define TCPC_TRANSMIT_TYPE GENMASK(2, 0)

#define TCPC_TX_BYTE_CNT 0x51
#define TCPC_TX_HDR 0x52

--
2.45.2.803.g4e1b14247a-goog