seo/Kernel-Weather-Clock
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Refactor inline functions and clean up code formatting

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Seo Chaegeon authored and GitHub committed 2026-01-08 14:59:12 +09:00
1 parent d818a3035e
commit 6637e820e2
1 file changed
+16 -19
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driver.c
+16 -19
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@@ -1,4 +1,3 @@
#include <linux/module.h> #include <linux/module.h>
#include <linux/kernel.h> #include <linux/kernel.h>
#include <linux/init.h> #include <linux/init.h>
@@ -17,18 +16,13 @@
#define DRIVER_NAME "clock_drv" #define DRIVER_NAME "clock_drv"
#define CLASS_NAME "clock_drv_class" #define CLASS_NAME "clock_drv_class"
#define DS_RST 17 #define DS_RST 17
#define DS_DAT 4 #define DS_DAT 4
#define DS_SCLK 22 #define DS_SCLK 22
#define ENC_S1 24 #define ENC_S1 24
#define ENC_S2 25 #define ENC_S2 25
#define ENC_SW 26 #define ENC_SW 26
#define DHT_GPIO 23 #define DHT_GPIO 23
#define LED0 5 #define LED0 5
#define LED1 6 #define LED1 6
#define LED2 12 #define LED2 12
@@ -110,8 +104,15 @@ static u8 ds_read_byte(void)
return v; return v;
} }
static inline int bcd2int(u8 b) { return (b & 0x0F) + ((b >> 4) & 0x0F) * 10; } static inline int bcd2int(u8 b)
static inline u8 int2bcd(int v){ return (u8)(((v/10) << 4) | (v%10)); } {
return (b & 0x0F) + ((b >> 4) & 0x0F) * 10;
}
static inline u8 int2bcd(int v)
{
return (u8)(((v/10) << 4) | (v%10));
}
static void ds1302_read_time(struct rtc_simple *t) static void ds1302_read_time(struct rtc_simple *t)
{ {
@@ -176,7 +177,6 @@ static const char *field_name(int f)
return "SEC"; return "SEC";
} }
static int dht_wait_level(int level, int timeout_us) static int dht_wait_level(int level, int timeout_us)
{ {
int i; int i;
@@ -239,7 +239,7 @@ static int dht11_read_once(int *out_temp, int *out_hum)
*out_temp = data[2]; *out_temp = data[2];
return 0; return 0;
err: err:
local_irq_restore(flags); local_irq_restore(flags);
return -ETIMEDOUT; return -ETIMEDOUT;
} }
@@ -328,8 +328,6 @@ static void page_toggle_if_cw_locked(void)
last_page_switch_j = now; last_page_switch_j = now;
} }
static irqreturn_t s1_irq_handler(int irq, void *dev_id) static irqreturn_t s1_irq_handler(int irq, void *dev_id)
{ {
unsigned long now = jiffies; unsigned long now = jiffies;
@@ -389,7 +387,6 @@ static void set_led_level(int level)
} }
} }
static ssize_t dev_read(struct file *f, char __user *ubuf, size_t cnt, loff_t *ppos) static ssize_t dev_read(struct file *f, char __user *ubuf, size_t cnt, loff_t *ppos)
{ {
char kbuf[160]; char kbuf[160];
@@ -427,8 +424,7 @@ static ssize_t dev_read(struct file *f, char __user *ubuf, size_t cnt, loff_t *p
return len; return len;
} }
static ssize_t dev_write(struct file *f, const char __user *ubuf, static ssize_t dev_write(struct file *f, const char __user *ubuf, size_t cnt, loff_t *ppos)
size_t cnt, loff_t *ppos)
{ {
char kbuf[64]; char kbuf[64];
int hh, mm, ss; int hh, mm, ss;
@@ -555,18 +551,19 @@ static int __init mod_init(void)
mutex_unlock(&lock0); mutex_unlock(&lock0);
printk(KERN_INFO "OK: DHT cached every %d ms\n", DHT_CACHE_MS); printk(KERN_INFO "OK: DHT cached every %d ms\n", DHT_CACHE_MS);
return 0; return 0;
err_gpio: err_gpio:
gpio_free(DHT_GPIO); gpio_free(DHT_GPIO);
gpio_free(ENC_SW); gpio_free(ENC_S2); gpio_free(ENC_S1); gpio_free(ENC_SW); gpio_free(ENC_S2); gpio_free(ENC_S1);
gpio_free(DS_SCLK); gpio_free(DS_DAT); gpio_free(DS_RST); gpio_free(DS_SCLK); gpio_free(DS_DAT); gpio_free(DS_RST);
err_dev: err_dev:
device_destroy(cls,devno); device_destroy(cls,devno);
class_destroy(cls); class_destroy(cls);
err_cdev: err_cdev:
cdev_del(&cdev0); cdev_del(&cdev0);
err_chr: err_chr:
unregister_chrdev_region(devno,1); unregister_chrdev_region(devno,1);
return ret; return ret;
} }