x86: ivybridge: Implement PCH_REQ_PMBASE_INFO

Implement this ioctl() to support power off.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

diff --git a/arch/x86/cpu/ivybridge/bd82x6x.c b/arch/x86/cpu/ivybridge/bd82x6x.c
index ed9bce641687f812a71c34df997d56e7c17adde0..1cb6cecda9ea0fb1d066b0fe9a2df5421d853bdb 100644 (file)
--- a/arch/x86/cpu/ivybridge/bd82x6x.c
+++ b/arch/x86/cpu/ivybridge/bd82x6x.c
@@ -229,6 +229,21 @@ static int bd82x6x_ioctl(struct udevice *dev, enum pch_req_t req, void *data,
                        return -ENOENT;
 
                return val & RCBA_AUDIO_CONFIG_MASK;
+       case PCH_REQ_PMBASE_INFO: {
+               struct pch_pmbase_info *pm = data;
+               int ret;
+
+               /* Find the base address of the powermanagement registers */
+               ret = dm_pci_read_config16(dev, 0x40, &pm->base);
+               if (ret)
+                       return ret;
+               pm->base &= 0xfffe;
+               pm->gpio0_en_ofs = GPE0_EN;
+               pm->pm1_sts_ofs = PM1_STS;
+               pm->pm1_cnt_ofs = PM1_CNT;
+
+               return 0;
+       }
        default:
                return -ENOSYS;
        }