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auxdisplay: ht16k33: Define a few helper macros

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Define a few helper macros — wrappers on container_of() — for easier
maintenance in the future. While at it, include missing container_of.h.

Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Tested-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
This commit is contained in:
Andy Shevchenko 2024-02-19 18:58:04 +02:00
parent 5a805a7827
commit 0ee6eb851e
1 changed files with 16 additions and 12 deletions
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28
drivers/auxdisplay/ht16k33.c
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@ -15,6 +15,7 @@
#include <linux/property.h>
#include <linux/fb.h>
#include <linux/backlight.h>
#include <linux/container_of.h>
#include <linux/input.h>
#include <linux/input/matrix_keypad.h>
#include <linux/leds.h>
@ -107,6 +108,15 @@ struct ht16k33_priv {
uint8_t blink;
};
#define ht16k33_work_to_priv(p) \
container_of(p, struct ht16k33_priv, work.work)
#define ht16k33_led_to_priv(p) \
container_of(p, struct ht16k33_priv, led)
#define ht16k33_linedisp_to_priv(p) \
container_of(p, struct ht16k33_priv, seg.linedisp)
static const struct fb_fix_screeninfo ht16k33_fb_fix = {
.id = DRIVER_NAME,
.type = FB_TYPE_PACKED_PIXELS,
@ -194,8 +204,7 @@ static int ht16k33_brightness_set(struct ht16k33_priv *priv,
static int ht16k33_brightness_set_blocking(struct led_classdev *led_cdev,
enum led_brightness brightness)
{
struct ht16k33_priv *priv = container_of(led_cdev, struct ht16k33_priv,
led);
struct ht16k33_priv *priv = ht16k33_led_to_priv(led_cdev);
return ht16k33_brightness_set(priv, brightness);
}
@ -203,8 +212,7 @@ static int ht16k33_brightness_set_blocking(struct led_classdev *led_cdev,
static int ht16k33_blink_set(struct led_classdev *led_cdev,
unsigned long *delay_on, unsigned long *delay_off)
{
struct ht16k33_priv *priv = container_of(led_cdev, struct ht16k33_priv,
led);
struct ht16k33_priv *priv = ht16k33_led_to_priv(led_cdev);
unsigned int delay;
uint8_t blink;
int err;
@ -246,8 +254,7 @@ static void ht16k33_fb_queue(struct ht16k33_priv *priv)
*/
static void ht16k33_fb_update(struct work_struct *work)
{
struct ht16k33_priv *priv = container_of(work, struct ht16k33_priv,
work.work);
struct ht16k33_priv *priv = ht16k33_work_to_priv(work);
struct ht16k33_fbdev *fbdev = &priv->fbdev;
uint8_t *p1, *p2;
@ -441,8 +448,7 @@ static void ht16k33_keypad_stop(struct input_dev *dev)
static void ht16k33_seg7_update(struct work_struct *work)
{
struct ht16k33_priv *priv = container_of(work, struct ht16k33_priv,
work.work);
struct ht16k33_priv *priv = ht16k33_work_to_priv(work);
struct ht16k33_seg *seg = &priv->seg;
char *s = seg->linedisp.buf;
uint8_t buf[9];
@ -462,8 +468,7 @@ static void ht16k33_seg7_update(struct work_struct *work)
static void ht16k33_seg14_update(struct work_struct *work)
{
struct ht16k33_priv *priv = container_of(work, struct ht16k33_priv,
work.work);
struct ht16k33_priv *priv = ht16k33_work_to_priv(work);
struct ht16k33_seg *seg = &priv->seg;
char *s = seg->linedisp.buf;
uint8_t buf[8];
@ -478,8 +483,7 @@ static void ht16k33_seg14_update(struct work_struct *work)
static void ht16k33_linedisp_update(struct linedisp *linedisp)
{
struct ht16k33_priv *priv = container_of(linedisp, struct ht16k33_priv,
seg.linedisp);
struct ht16k33_priv *priv = ht16k33_linedisp_to_priv(linedisp);
schedule_delayed_work(&priv->work, 0);
}