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hwmon: (sch5627) Add sch5627_send_cmd function

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

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Sigend-off-by: Jean Delvare <khali@linux-fr.org>
This commit is contained in:
Hans de Goede 2011-05-25 20:43:33 +02:00 committed by Jean Delvare
parent 949a9d7002
commit 709046a622
1 changed files with 19 additions and 4 deletions
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23
drivers/hwmon/sch5627.c
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@ -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 */
return inb(data->addr + 4);
/* 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)