[PATCH v3 06/44] staging: spmi: hisi-spmi-controller: use le32 macros where needed

Mauro Carvalho Chehab
2020-08-17T07:14:37Z

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

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.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