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Commit 709046a6 authored by Hans de Goede's avatar Hans de Goede Committed by Jean Delvare
Browse files

hwmon: (sch5627) Add sch5627_send_cmd function 



This patch generalizes sch5627_read_virtual_reg so that it can
be used to write virtual regs too.

Signed-off-by: default avatarHans de Goede <hdegoede@redhat.com>
Sigend-off-by: default avatarJean Delvare <khali@linux-fr.org>
parent 949a9d70

drivers/hwmon/sch5627.c

+19 −4
Original line number Diff line number Diff line
@@ -52,6 +52,9 @@ 
#define SCH5627_COMPANY_ID		0x5c

#define SCH5627_PRIMARY_ID		0xa0



#define SCH5627_CMD_READ		0x02

#define SCH5627_CMD_WRITE		0x03



#define SCH5627_REG_BUILD_CODE		0x39

#define SCH5627_REG_BUILD_ID		0x3a

#define SCH5627_REG_HWMON_ID		0x3c
@@ -140,7 +143,7 @@ static inline void superio_exit(int base) 
	release_region(base, 2);

}



static int sch5627_read_virtual_reg(struct sch5627_data *data, u16 reg)

static int sch5627_send_cmd(struct sch5627_data *data, u8 cmd, u16 reg, u8 v)

{

	u8 val;

	int i;
@@ -163,10 +166,14 @@ static int sch5627_read_virtual_reg(struct sch5627_data *data, u16 reg) 
	outb(0x80, data->addr + 3);



	/* Write Request Packet Header */

	outb(0x02, data->addr + 4); /* Access Type: VREG read */

	outb(cmd, data->addr + 4); /* VREG Access Type read:0x02 write:0x03 */

	outb(0x01, data->addr + 5); /* # of Entries: 1 Byte (8-bit) */

	outb(0x04, data->addr + 2); /* Mailbox AP to first data entry loc. */



	/* Write Value field */

	if (cmd == SCH5627_CMD_WRITE)

		outb(v, data->addr + 4);



	/* Write Address field */

	outb(reg & 0xff, data->addr + 6);

	outb(reg >> 8, data->addr + 7);
@@ -224,8 +231,16 @@ static int sch5627_read_virtual_reg(struct sch5627_data *data, u16 reg) 
	 * But if we do that things don't work, so let's not.

	 */



	/* Read Data from Mailbox */

	/* Read Value field */

	if (cmd == SCH5627_CMD_READ)

		return inb(data->addr + 4);



	return 0;

}



static int sch5627_read_virtual_reg(struct sch5627_data *data, u16 reg)

{

	return sch5627_send_cmd(data, SCH5627_CMD_READ, reg, 0);

}



static int sch5627_read_virtual_reg16(struct sch5627_data *data, u16 reg)