linux-kernel - [PATCH 06/44] staging: spmi: hisi-spmi-controller: use le32 macros where needed

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Date:   Wed, 12 Aug 2020 17:56:16 +0200
From:   Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
To:     unlisted-recipients:; (no To-header on input)
Cc:     linuxarm@...wei.com, mauro.chehab@...wei.com,
        Mauro Carvalho Chehab <mchehab+huawei@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-kernel@...r.kernel.org, devel@...verdev.osuosl.org
Subject: [PATCH 06/44] staging: spmi: hisi-spmi-controller: use le32 macros where needed

Instead of manually using bswap_32(), just use the
le32 macros.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
---
 .../staging/hikey9xx/hisi-spmi-controller.c   | 20 +++++++------------
 1 file changed, 7 insertions(+), 13 deletions(-)

diff --git a/drivers/staging/hikey9xx/hisi-spmi-controller.c b/drivers/staging/hikey9xx/hisi-spmi-controller.c
index 7fae267a6062..cacd28150b49 100644
--- a/drivers/staging/hikey9xx/hisi-spmi-controller.c
+++ b/drivers/staging/hikey9xx/hisi-spmi-controller.c
@@ -11,7 +11,6 @@
 #include <linux/module.h>
 #include <linux/seq_file.h>
 #include <linux/spmi.h>
-#include <linux/spmi.h>
 
 #define SPMI_CONTROLLER_NAME		"spmi_controller"
 
@@ -43,11 +42,6 @@
 #define SPMI_APB_SPMI_CMD_TYPE_OFFSET			24
 #define SPMI_APB_SPMI_CMD_LENGTH_OFFSET			20
 
-#define bswap_32(X)   \
-    ((((u32)(X) & 0xff000000) >> 24) | \
-     (((u32)(X) & 0x00ff0000) >> 8) | \
-     (((u32)(X) & 0x0000ff00) << 8) | \
-     (((u32)(X) & 0x000000ff) << 24))
 #define SPMI_APB_SPMI_CMD_SLAVEID_OFFSET		16
 #define SPMI_APB_SPMI_CMD_ADDR_OFFSET			0
 
@@ -179,14 +173,15 @@ static int spmi_read_cmd(struct spmi_controller *ctrl,
 
 	writel(cmd, spmi_controller->base + chnl_ofst + SPMI_APB_SPMI_CMD_BASE_ADDR);
 
-	rc = spmi_controller_wait_for_done(spmi_controller, spmi_controller->base, sid, addr);
+	rc = spmi_controller_wait_for_done(spmi_controller,
+					   spmi_controller->base, sid, addr);
 	if (rc)
 		goto done;
 
 	i = 0;
 	do {
 		data = readl(spmi_controller->base + chnl_ofst + SPMI_SLAVE_OFFSET * sid + SPMI_APB_SPMI_RDATA0_BASE_ADDR + i * SPMI_PER_DATAREG_BYTE);
-		data = bswap_32(data);
+		data = be32_to_cpu((__be32)data);
 		if ((bc - i * SPMI_PER_DATAREG_BYTE) >> 2) {
 			memcpy(buf, &data, sizeof(data));
 			buf += sizeof(data);
@@ -210,8 +205,7 @@ static int spmi_write_cmd(struct spmi_controller *ctrl,
 {
 	struct spmi_controller_dev *spmi_controller = dev_get_drvdata(&ctrl->dev);
 	unsigned long flags;
-	u32 cmd;
-	u32 data = 0;
+	u32 cmd, data;
 	int rc;
 	u32 chnl_ofst = SPMI_CHANNEL_OFFSET * spmi_controller->channel;
 	u8 op_code, i;
@@ -246,7 +240,7 @@ static int spmi_write_cmd(struct spmi_controller *ctrl,
 
 	i = 0;
 	do {
-		memset(&data, 0, sizeof(data));
+		data = 0;
 		if ((bc - i * SPMI_PER_DATAREG_BYTE) >> 2) {
 			memcpy(&data, buf, sizeof(data));
 			buf += sizeof(data);
@@ -255,8 +249,8 @@ static int spmi_write_cmd(struct spmi_controller *ctrl,
 			buf += (bc % SPMI_PER_DATAREG_BYTE);
 		}
 
-		data = bswap_32(data);
-		writel(data, spmi_controller->base + chnl_ofst + SPMI_APB_SPMI_WDATA0_BASE_ADDR + SPMI_PER_DATAREG_BYTE * i);
+		writel((u32)cpu_to_be32(data),
+		       spmi_controller->base + chnl_ofst + SPMI_APB_SPMI_WDATA0_BASE_ADDR + SPMI_PER_DATAREG_BYTE * i);
 		i++;
 	} while (bc > i * SPMI_PER_DATAREG_BYTE);
 
-- 
2.26.2