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better separation

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This commit is contained in:
Wolfgang Hottgenroth
2025-06-13 12:26:54 +01:00
parent e8f5493e5d
commit 46acdf410e
5 changed files with 62 additions and 54 deletions
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2
driver/init.c
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@ -6,7 +6,7 @@
MODULE_LICENSE("GPL"); MODULE_LICENSE("GPL");
MODULE_AUTHOR("Wolfgang Hottgenroth"); MODULE_AUTHOR("Wolfgang Hottgenroth");
MODULE_DESCRIPTION("A simple LKM to parse the device tree for a specific device and its properties"); MODULE_DESCRIPTION("Driver for the MainsCnt measurement hat");
extern struct platform_driver leds_driver; extern struct platform_driver leds_driver;

7
driver/ls7366r.c
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@ -10,6 +10,7 @@
#include <linux/of_irq.h> #include <linux/of_irq.h>
#include <linux/workqueue.h> #include <linux/workqueue.h>
#include "ls7366r_registers.h"
#include "ls7366r.h" #include "ls7366r.h"
@ -31,7 +32,7 @@ static int writeCmdData(struct spi_device *client, u8 c, u8 d) {
return spi_write(client, buf, 2); return spi_write(client, buf, 2);
} }
int read32(struct spi_device *client, u8 c, u32 *r) { static int read32(struct spi_device *client, u8 c, u32 *r) {
u8 tx_buf[5]; u8 tx_buf[5];
tx_buf[0] = c; tx_buf[0] = c;
u8 rx_buf[5]; u8 rx_buf[5];
@ -49,6 +50,10 @@ int read32(struct spi_device *client, u8 c, u32 *r) {
return 0; return 0;
} }
int read_otr(struct spi_device *client, u32 *r) {
return read32(client, CMD_RD | REG_OTR, r);
}
static int read8(struct spi_device *client, u8 c, u8 *r) { static int read8(struct spi_device *client, u8 c, u8 *r) {
u8 tx_buf[2]; u8 tx_buf[2];
tx_buf[0] = c; tx_buf[0] = c;

52
driver/ls7366r.h
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@ -1,56 +1,6 @@
#ifndef _LS7366R_H_ #ifndef _LS7366R_H_
#define _LS7366R_H_ #define _LS7366R_H_
#define REG_MDR0 0b00001000 int read_otr(struct spi_device *client, u32 *r);
#define REG_MDR1 0b00010000
#define REG_DTR 0b00011000
#define REG_CNTR 0b00100000
#define REG_OTR 0b00101000
#define REG_STR 0b00110000
#define CMD_CLR 0b00000000
#define CMD_RD 0b01000000
#define CMD_WR 0b10000000
#define CMD_LOAD 0b11000000
#define STR_CY 0b10000000
#define STR_BW 0b01000000
#define STR_CMP 0b00100000
#define STR_IDX 0b00010000
#define STR_CEN 0b00001000
#define STR_PLS 0b00000100
#define STR_UD 0b00000010
#define STR_S 0b00000001
#define MDR0_NOQ 0b00000000
#define MDR0_Q1 0b00000001
#define MDR0_Q2 0b00000010
#define MDR0_Q4 0b00000011
#define MDR0_FRC 0b00000000
#define MDR0_SCC 0b00000100
#define MDR0_RLC 0b00001000
#define MDR0_MNC 0b00001100
#define MDR0_DI 0b00000000
#define MDR0_ILC 0b00010000
#define MDR0_IRC 0b00100000
#define MDR0_ILO 0b00110000
#define MDR0_AI 0b00000000
#define MDR0_SI 0b01000000
#define MDR0_FC1 0b00000000
#define MDR0_FC2 0b10000000
#define MDR1_4CM 0b00000000
#define MDR1_3CM 0b00000001
#define MDR1_2CM 0b00000010
#define MDR1_1CM 0b00000011
#define MDR1_EC 0b00000000
#define MDR1_DC 0b00000100
#define MDR1_F_IDX 0b00010000
#define MDR1_F_CMP 0b00100000
#define MDR1_F_BW 0b01000000
#define MDR1_F_CY 0b10000000
int read32(struct spi_device *client, u8 c, u32 *r);
#endif /* _LS7366R_H_ */ #endif /* _LS7366R_H_ */

53
driver/ls7366r_registers.h Normal file
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@ -0,0 +1,53 @@
#ifndef _LS7366R_REGISTERS_H_
#define _LS7366R_REGISTERS_H_
#define REG_MDR0 0b00001000
#define REG_MDR1 0b00010000
#define REG_DTR 0b00011000
#define REG_CNTR 0b00100000
#define REG_OTR 0b00101000
#define REG_STR 0b00110000
#define CMD_CLR 0b00000000
#define CMD_RD 0b01000000
#define CMD_WR 0b10000000
#define CMD_LOAD 0b11000000
#define STR_CY 0b10000000
#define STR_BW 0b01000000
#define STR_CMP 0b00100000
#define STR_IDX 0b00010000
#define STR_CEN 0b00001000
#define STR_PLS 0b00000100
#define STR_UD 0b00000010
#define STR_S 0b00000001
#define MDR0_NOQ 0b00000000
#define MDR0_Q1 0b00000001
#define MDR0_Q2 0b00000010
#define MDR0_Q4 0b00000011
#define MDR0_FRC 0b00000000
#define MDR0_SCC 0b00000100
#define MDR0_RLC 0b00001000
#define MDR0_MNC 0b00001100
#define MDR0_DI 0b00000000
#define MDR0_ILC 0b00010000
#define MDR0_IRC 0b00100000
#define MDR0_ILO 0b00110000
#define MDR0_AI 0b00000000
#define MDR0_SI 0b01000000
#define MDR0_FC1 0b00000000
#define MDR0_FC2 0b10000000
#define MDR1_4CM 0b00000000
#define MDR1_3CM 0b00000001
#define MDR1_2CM 0b00000010
#define MDR1_1CM 0b00000011
#define MDR1_EC 0b00000000
#define MDR1_DC 0b00000100
#define MDR1_F_IDX 0b00010000
#define MDR1_F_CMP 0b00100000
#define MDR1_F_BW 0b01000000
#define MDR1_F_CY 0b10000000
#endif /* _LS7366R_REGISTERS_H_ */

2
driver/trigger.c
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@ -56,7 +56,7 @@ static void counter_worker(struct work_struct *work) {
u64 ts = data->timestamp; u64 ts = data->timestamp;
u32 counter_value; u32 counter_value;
int ret = read32(data->client, CMD_RD | REG_OTR, &counter_value); int ret = read_otr(data->client, &counter_value);
if (ret < 0) { if (ret < 0) {
printk("counter - Error! read32 failed in counter_worker\n"); printk("counter - Error! read32 failed in counter_worker\n");