diff mbox series

[v2,1/2] HID: amd_sfh: Add support to export device operating states

Message ID 20241217151627.757477-2-Shyam-sundar.S-k@amd.com
State New
Headers show
Series Add new capabilities to PMF Smart PC | expand

Commit Message

Shyam Sundar S K Dec. 17, 2024, 3:16 p.m. UTC 
From: Basavaraj Natikar <basavaraj.natikar@amd.com>

Add support to export device operating states, such as laptop placement,
platform types and propagate this data to AMD PMF driver for use in
actions.

To retrieve the device operating states data, SRA sensor support need to
be enabled in AMD SFH driver. So add support to enable the SRA sensor.

Also, remove explicit assignments to sensor_index enum.

Co-developed-by: Akshata MukundShetty <akshata.mukundshetty@amd.com>
Signed-off-by: Akshata MukundShetty <akshata.mukundshetty@amd.com>
Signed-off-by: Basavaraj Natikar <basavaraj.natikar@amd.com>
Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
---
 drivers/hid/amd-sfh-hid/amd_sfh_common.h      |  1 +
 drivers/hid/amd-sfh-hid/sfh1_1/amd_sfh_init.c | 22 +++++++++++
 .../amd-sfh-hid/sfh1_1/amd_sfh_interface.c    | 38 +++++++++++++++++++
 .../amd-sfh-hid/sfh1_1/amd_sfh_interface.h    | 24 +++++++++++-
 include/linux/amd-pmf-io.h                    | 15 ++++++++
 5 files changed, 98 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/drivers/hid/amd-sfh-hid/amd_sfh_common.h b/drivers/hid/amd-sfh-hid/amd_sfh_common.h
index e5620d7db569..799b8686a88a 100644
--- a/drivers/hid/amd-sfh-hid/amd_sfh_common.h
+++ b/drivers/hid/amd-sfh-hid/amd_sfh_common.h
@@ -43,6 +43,7 @@  struct amd_mp2_sensor_info {
 struct sfh_dev_status {
 	bool is_hpd_present;
 	bool is_als_present;
+	bool is_sra_present;
 };
 
 struct amd_mp2_dev {
diff --git a/drivers/hid/amd-sfh-hid/sfh1_1/amd_sfh_init.c b/drivers/hid/amd-sfh-hid/sfh1_1/amd_sfh_init.c
index db36d87d5634..03c028f1aab4 100644
--- a/drivers/hid/amd-sfh-hid/sfh1_1/amd_sfh_init.c
+++ b/drivers/hid/amd-sfh-hid/sfh1_1/amd_sfh_init.c
@@ -30,6 +30,7 @@  static int amd_sfh_get_sensor_num(struct amd_mp2_dev *mp2, u8 *sensor_id)
 		case ACCEL_IDX:
 		case GYRO_IDX:
 		case MAG_IDX:
+		case SRA_IDX:
 		case ALS_IDX:
 		case HPD_IDX:
 			if (BIT(i) & slist->sl.sensors)
@@ -58,6 +59,8 @@  static const char *get_sensor_name(int idx)
 		return "gyroscope";
 	case MAG_IDX:
 		return "magnetometer";
+	case SRA_IDX:
+		return "SRA";
 	case ALS_IDX:
 		return "ALS";
 	case HPD_IDX:
@@ -130,6 +133,23 @@  static int amd_sfh1_1_hid_client_init(struct amd_mp2_dev *privdata)
 
 	for (i = 0; i < cl_data->num_hid_devices; i++) {
 		cl_data->sensor_sts[i] = SENSOR_DISABLED;
+
+		if (cl_data->num_hid_devices == 1 && cl_data->sensor_idx[0] == SRA_IDX)
+			break;
+
+		if (cl_data->sensor_idx[i] == SRA_IDX) {
+			info.sensor_idx = cl_data->sensor_idx[i];
+			writel(0, privdata->mmio + amd_get_p2c_val(privdata, 0));
+			mp2_ops->start(privdata, info);
+			status = amd_sfh_wait_for_response
+				(privdata, cl_data->sensor_idx[i], ENABLE_SENSOR);
+
+			cl_data->sensor_sts[i] = (status == 0) ? SENSOR_ENABLED : SENSOR_DISABLED;
+			if (cl_data->sensor_sts[i] == SENSOR_ENABLED)
+				privdata->dev_en.is_sra_present = true;
+			continue;
+		}
+
 		cl_data->sensor_requested_cnt[i] = 0;
 		cl_data->cur_hid_dev = i;
 		cl_idx = cl_data->sensor_idx[i];
@@ -181,6 +201,8 @@  static int amd_sfh1_1_hid_client_init(struct amd_mp2_dev *privdata)
 	}
 
 	for (i = 0; i < cl_data->num_hid_devices; i++) {
+		if (cl_data->sensor_idx[i] == SRA_IDX)
+			continue;
 		cl_data->cur_hid_dev = i;
 		if (cl_data->sensor_sts[i] == SENSOR_ENABLED) {
 			cl_data->is_any_sensor_enabled = true;
diff --git a/drivers/hid/amd-sfh-hid/sfh1_1/amd_sfh_interface.c b/drivers/hid/amd-sfh-hid/sfh1_1/amd_sfh_interface.c
index 4676f060da26..ffb98b4c36cb 100644
--- a/drivers/hid/amd-sfh-hid/sfh1_1/amd_sfh_interface.c
+++ b/drivers/hid/amd-sfh-hid/sfh1_1/amd_sfh_interface.c
@@ -87,6 +87,41 @@  void sfh_interface_init(struct amd_mp2_dev *mp2)
 	emp2 = mp2;
 }
 
+static int amd_sfh_mode_info(u32 *platform_type, u32 *laptop_placement)
+{
+	struct sfh_op_mode mode;
+
+	if (!platform_type || !laptop_placement)
+		return -EINVAL;
+
+	if (!emp2 || !emp2->dev_en.is_sra_present)
+		return -ENODEV;
+
+	mode.val = readl(emp2->mmio + amd_get_c2p_val(emp2, 3));
+
+	*platform_type = mode.op_mode.devicemode;
+
+	if (mode.op_mode.ontablestate == 1) {
+		*laptop_placement = ON_TABLE;
+	} else if (mode.op_mode.ontablestate == 2) {
+		*laptop_placement = ON_LAP_MOTION;
+	} else if (mode.op_mode.inbagstate == 1) {
+		*laptop_placement = IN_BAG;
+	} else if (mode.op_mode.outbagstate == 1) {
+		*laptop_placement = OUT_OF_BAG;
+	} else if (mode.op_mode.ontablestate == 0 || mode.op_mode.inbagstate == 0 ||
+		 mode.op_mode.outbagstate == 0) {
+		*laptop_placement = LP_UNKNOWN;
+		pr_warn_once("Unknown laptop placement\n");
+	} else if (mode.op_mode.ontablestate == 3 || mode.op_mode.inbagstate == 3 ||
+		 mode.op_mode.outbagstate == 3) {
+		*laptop_placement = LP_UNDEFINED;
+		pr_warn_once("Undefined laptop placement\n");
+	}
+
+	return 0;
+}
+
 static int amd_sfh_hpd_info(u8 *user_present)
 {
 	struct hpd_status hpdstatus;
@@ -131,6 +166,9 @@  int amd_get_sfh_info(struct amd_sfh_info *sfh_info, enum sfh_message_type op)
 			return amd_sfh_hpd_info(&sfh_info->user_present);
 		case MT_ALS:
 			return amd_sfh_als_info(&sfh_info->ambient_light);
+		case MT_SRA:
+			return amd_sfh_mode_info(&sfh_info->platform_type,
+						 &sfh_info->laptop_placement);
 		}
 	}
 	return -EINVAL;
diff --git a/drivers/hid/amd-sfh-hid/sfh1_1/amd_sfh_interface.h b/drivers/hid/amd-sfh-hid/sfh1_1/amd_sfh_interface.h
index 2c211d28764d..665c99ad779f 100644
--- a/drivers/hid/amd-sfh-hid/sfh1_1/amd_sfh_interface.h
+++ b/drivers/hid/amd-sfh-hid/sfh1_1/amd_sfh_interface.h
@@ -22,8 +22,9 @@  enum sensor_index {
 	ACCEL_IDX,
 	GYRO_IDX,
 	MAG_IDX,
-	ALS_IDX = 4,
-	HPD_IDX = 5,
+	SRA_IDX,
+	ALS_IDX,
+	HPD_IDX,
 	MAX_IDX = 15,
 };
 
@@ -164,6 +165,25 @@  struct hpd_status {
 	};
 };
 
+struct sfh_op_mode {
+	union {
+		u32 val;
+		struct {
+			u32 mode		: 3;
+			u32 lidstatus		: 1;
+			u32 angle		: 10;
+			u32 inbagstatedbg	: 2;
+			u32 ontablestate	: 2;
+			u32 inbagstate		: 2;
+			u32 outbagstate		: 2;
+			u32 inbagmlcstate	: 1;
+			u32 powerstate		: 2;
+			u32 data		: 3;
+			u32 devicemode		: 4;
+		} op_mode;
+	};
+};
+
 void sfh_interface_init(struct amd_mp2_dev *mp2);
 void sfh_deinit_emp2(void);
 void amd_sfh1_1_set_desc_ops(struct amd_mp2_ops *mp2_ops);
diff --git a/include/linux/amd-pmf-io.h b/include/linux/amd-pmf-io.h
index b4f818205216..6fa510f419c0 100644
--- a/include/linux/amd-pmf-io.h
+++ b/include/linux/amd-pmf-io.h
@@ -18,10 +18,12 @@ 
  * enum sfh_message_type - Query the SFH message type
  * @MT_HPD: Message ID to know the Human presence info from MP2 FW
  * @MT_ALS: Message ID to know the Ambient light info from MP2 FW
+ * @MT_SRA: Message ID to know the SRA data from MP2 FW
  */
 enum sfh_message_type {
 	MT_HPD,
 	MT_ALS,
+	MT_SRA,
 };
 
 /**
@@ -40,10 +42,23 @@  enum sfh_hpd_info {
  * struct amd_sfh_info - get HPD sensor info from MP2 FW
  * @ambient_light: Populates the ambient light information
  * @user_present: Populates the user presence information
+ * @platform_type: Operating modes (clamshell, flat, tent, etc.)
+ * @laptop_placement: Device states (ontable, onlap, outbag)
  */
 struct amd_sfh_info {
 	u32 ambient_light;
 	u8 user_present;
+	u32 platform_type;
+	u32 laptop_placement;
+};
+
+enum laptop_placement {
+	LP_UNKNOWN = 0,
+	ON_TABLE,
+	ON_LAP_MOTION,
+	IN_BAG,
+	OUT_OF_BAG,
+	LP_UNDEFINED,
 };
 
 int amd_get_sfh_info(struct amd_sfh_info *sfh_info, enum sfh_message_type op);