From b69b603bcdeb05f846f76da81e4a681aff6a1001 Mon Sep 17 00:00:00 2001
From: Simon Glass <sjg@chromium.org>
Date: Thu, 25 Apr 2019 21:59:01 -0600
Subject: [PATCH] x86: pch: Add an ioctl to read power-management info
Add a new ioctl() request to read information about the power-management
system. This can be used to power off the device.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
---
include/pch.h | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
diff --git a/include/pch.h b/include/pch.h
index 046a5fde3a..0b44b66df9 100644
--- a/include/pch.h
+++ b/include/pch.h
@@ -16,6 +16,9 @@ enum pch_req_t {
/* Returns HDA config info if Azalia V1CTL enabled, -ENOENT if not */
PCH_REQ_HDA_CONFIG,
+ /* Fills out a struct pch_pmbase_info if available */
+ PCH_REQ_PMBASE_INFO,
+
PCH_REQ_TEST1, /* Test requests for sandbox driver */
PCH_REQ_TEST2,
PCH_REQ_TEST3,
@@ -23,6 +26,21 @@ enum pch_req_t {
PCH_REQ_COUNT, /* Number of ioctrls supported */
};
+/**
+ * struct pch_pmbase_info - Information filled in by PCH_REQ_PMBASE_INFO
+ *
+ * @pmbase: IO address of power-management controller
+ * @gpio0_en_ofs: Offset of GPIO0 enable register
+ * @pm1_sts_ofs: Offset of status register
+ * @pm1_cnt_ofs: Offset of control register
+ */
+struct pch_pmbase_info {
+ u16 base;
+ u8 gpio0_en_ofs;
+ u8 pm1_sts_ofs;
+ u8 pm1_cnt_ofs;
+};
+
/**
* struct pch_ops - Operations for the Platform Controller Hub
*
--
2.39.5