From: Nava kishore Manne <nava.manne@xilinx.com>
Date: Wed, 6 Feb 2019 11:07:19 +0000 (+0530)
Subject: firmware: xilinx: Add zynqmp_pm_get_chipid() API
X-Git-Tag: rel_imx_5.10.35_2.0.0-somdevices.0~5227^2~24^2~8
X-Git-Url: https://git.somdevices.com/?a=commitdiff_plain;h=fe6f42cf6eb3183ebd6ab6b0b7dcbee2600c2baa;p=linux.git

firmware: xilinx: Add zynqmp_pm_get_chipid() API

This patch adds a new API to provide access to the
hardware related data like soc revision, IDCODE... etc.

Signed-off-by: Nava kishore Manne <nava.manne@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
---

diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
index 70b50377ae5f..16a23bc4c2c3 100644
--- a/drivers/firmware/xilinx/zynqmp.c
+++ b/drivers/firmware/xilinx/zynqmp.c
@@ -186,6 +186,29 @@ static int zynqmp_pm_get_api_version(u32 *version)
 	return ret;
 }
 
+/**
+ * zynqmp_pm_get_chipid - Get silicon ID registers
+ * @idcode:     IDCODE register
+ * @version:    version register
+ *
+ * Return:      Returns the status of the operation and the idcode and version
+ *              registers in @idcode and @version.
+ */
+static int zynqmp_pm_get_chipid(u32 *idcode, u32 *version)
+{
+	u32 ret_payload[PAYLOAD_ARG_CNT];
+	int ret;
+
+	if (!idcode || !version)
+		return -EINVAL;
+
+	ret = zynqmp_pm_invoke_fn(PM_GET_CHIPID, 0, 0, 0, 0, ret_payload);
+	*idcode = ret_payload[1];
+	*version = ret_payload[2];
+
+	return ret;
+}
+
 /**
  * zynqmp_pm_get_trustzone_version() - Get secure trustzone firmware version
  * @version:	Returned version value
@@ -509,6 +532,7 @@ static int zynqmp_pm_reset_get_status(const enum zynqmp_pm_reset reset,
 
 static const struct zynqmp_eemi_ops eemi_ops = {
 	.get_api_version = zynqmp_pm_get_api_version,
+	.get_chipid = zynqmp_pm_get_chipid,
 	.query_data = zynqmp_pm_query_data,
 	.clock_enable = zynqmp_pm_clock_enable,
 	.clock_disable = zynqmp_pm_clock_disable,
diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h
index 07c587a0b06e..5a1f19848100 100644
--- a/include/linux/firmware/xlnx-zynqmp.h
+++ b/include/linux/firmware/xlnx-zynqmp.h
@@ -36,6 +36,7 @@ enum pm_api_id {
 	PM_GET_API_VERSION = 1,
 	PM_RESET_ASSERT = 17,
 	PM_RESET_GET_STATUS,
+	PM_GET_CHIPID = 24,
 	PM_IOCTL = 34,
 	PM_QUERY_DATA,
 	PM_CLOCK_ENABLE,
@@ -224,6 +225,7 @@ struct zynqmp_pm_query_data {
 
 struct zynqmp_eemi_ops {
 	int (*get_api_version)(u32 *version);
+	int (*get_chipid)(u32 *idcode, u32 *version);
 	int (*query_data)(struct zynqmp_pm_query_data qdata, u32 *out);
 	int (*clock_enable)(u32 clock_id);
 	int (*clock_disable)(u32 clock_id);