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i2c: i801: fix DNV's SMBCTRL register offset

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commit 851a15114895c5bce163a6f2d57e0aa4658a1be4 upstream.

DNV's iTCO is slightly different with SMBCTRL sitting at a different
offset when compared to all other devices. Let's fix so that we can
properly use iTCO watchdog.

Fixes: 84d7f2ebd70d ("i2c: i801: Add support for Intel DNV")
Cc: <stable@vger.kernel.org> # v4.4+
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Felipe Balbi 2018-09-03 11:24:57 +03:00 committed by Greg Kroah-Hartman
parent 6c1a53fcf2
commit 0894c653c8
1 changed files with 6 additions and 1 deletions
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7
drivers/i2c/busses/i2c-i801.c
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@ -135,6 +135,7 @@
#define SBREG_BAR 0x10
#define SBREG_SMBCTRL 0xc6000c
#define SBREG_SMBCTRL_DNV 0xcf000c
/* Host status bits for SMBPCISTS */
#define SMBPCISTS_INTS 0x08
@ -1387,7 +1388,11 @@ static void i801_add_tco(struct i801_priv *priv)
spin_unlock(&p2sb_spinlock);
res = &tco_res[ICH_RES_MEM_OFF];
res->start = (resource_size_t)base64_addr + SBREG_SMBCTRL;
if (pci_dev->device == PCI_DEVICE_ID_INTEL_DNV_SMBUS)
res->start = (resource_size_t)base64_addr + SBREG_SMBCTRL_DNV;
else
res->start = (resource_size_t)base64_addr + SBREG_SMBCTRL;
res->end = res->start + 3;
res->flags = IORESOURCE_MEM;