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Date: Fri, 29 Apr 2022 03:16:42 -0700
From: Ronak Jain <ronak.jain@...inx.com>
To: <michal.simek@...inx.com>, <linux-kernel@...r.kernel.org>
CC: <gregkh@...uxfoundation.org>, <corbet@....net>,
<linux-arm-kernel@...ts.infradead.org>, <arnd@...db.de>,
<lakshmi.sai.krishna.potthuri@...inx.com>, <radheys@...inx.com>,
<agodhasa@...inx.com>, Ronak Jain <ronak.jain@...inx.com>
Subject: [PATCH] firmware: xilinx: add support for sd/usb/gem config
Add new APIs in firmware to configure SD/GEM/USB registers. Internally
it calls PM IOCTL for below SD/GEM/USB register configuration:
- SD/EMMC select
- SD slot type
- SD base clock
- SD 8 bit support
- GEM SGMII Mode
- SD fixed config
- GEM fixed config
- USB fixed config
Signed-off-by: Ronak Jain <ronak.jain@...inx.com>
---
drivers/firmware/xilinx/zynqmp.c | 47 ++++++++++++++++++++++++++++++++++++
include/linux/firmware/xlnx-zynqmp.h | 46 +++++++++++++++++++++++++++++++++++
2 files changed, 93 insertions(+)
diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
index f21ece56695e..f8a46aad9392 100644
--- a/drivers/firmware/xilinx/zynqmp.c
+++ b/drivers/firmware/xilinx/zynqmp.c
@@ -1220,6 +1220,53 @@ int zynqmp_pm_get_feature_config(enum pm_feature_config_id id,
}
/**
+ * zynqmp_pm_set_sd_config - PM call to set value of SD config registers
+ * @node: SD node ID
+ * @config: The config type of SD registers
+ * @value: Value to be set
+ *
+ * Return: Returns 0 on success or error value on failure.
+ */
+int zynqmp_pm_set_sd_config(u32 node, enum pm_sd_config_type config, u32 value)
+{
+ return zynqmp_pm_invoke_fn(PM_IOCTL, node, IOCTL_SET_SD_CONFIG,
+ config, value, NULL);
+}
+EXPORT_SYMBOL_GPL(zynqmp_pm_set_sd_config);
+
+/**
+ * zynqmp_pm_set_gem_config - PM call to set value of GEM config registers
+ * @node: GEM node ID
+ * @config: The config type of GEM registers
+ * @value: Value to be set
+ *
+ * Return: Returns 0 on success or error value on failure.
+ */
+int zynqmp_pm_set_gem_config(u32 node, enum pm_gem_config_type config,
+ u32 value)
+{
+ return zynqmp_pm_invoke_fn(PM_IOCTL, node, IOCTL_SET_GEM_CONFIG,
+ config, value, NULL);
+}
+EXPORT_SYMBOL_GPL(zynqmp_pm_set_gem_config);
+
+/**
+ * zynqmp_pm_set_usb_config - PM call to set value of USB config registers
+ * @node: USB node ID
+ * @config: The config type of USB registers
+ * @value: Value to be set
+ *
+ * Return: Returns 0 on success or error value on failure.
+ */
+int zynqmp_pm_set_usb_config(u32 node, enum pm_usb_config_type config,
+ u32 value)
+{
+ return zynqmp_pm_invoke_fn(PM_IOCTL, node, IOCTL_SET_USB_CONFIG,
+ config, value, NULL);
+}
+EXPORT_SYMBOL_GPL(zynqmp_pm_set_usb_config);
+
+/**
* struct zynqmp_pm_shutdown_scope - Struct for shutdown scope
* @subtype: Shutdown subtype
* @name: Matching string for scope argument
diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h
index 14f00a7672d1..71188af75f1a 100644
--- a/include/linux/firmware/xlnx-zynqmp.h
+++ b/include/linux/firmware/xlnx-zynqmp.h
@@ -147,6 +147,10 @@ enum pm_ioctl_id {
/* Runtime feature configuration */
IOCTL_SET_FEATURE_CONFIG = 26,
IOCTL_GET_FEATURE_CONFIG = 27,
+ /* Dynamic SD/GEM/USB configuration */
+ IOCTL_SET_SD_CONFIG = 30,
+ IOCTL_SET_GEM_CONFIG = 31,
+ IOCTL_SET_USB_CONFIG = 32,
};
enum pm_query_id {
@@ -388,6 +392,22 @@ enum pm_feature_config_id {
PM_FEATURE_EXTWDT_VALUE = 4,
};
+enum pm_sd_config_type {
+ SD_CONFIG_EMMC_SEL = 1, /* To set SD_EMMC_SEL in CTRL_REG_SD and SD_SLOTTYPE */
+ SD_CONFIG_BASECLK = 2, /* To set SD_BASECLK in SD_CONFIG_REG1 */
+ SD_CONFIG_8BIT = 3, /* To set SD_8BIT in SD_CONFIG_REG2 */
+ SD_CONFIG_FIXED = 4, /* To set fixed config registers */
+};
+
+enum pm_gem_config_type {
+ GEM_CONFIG_SGMII_MODE = 1, /* To set GEM_SGMII_MODE in GEM_CLK_CTRL register */
+ GEM_CONFIG_FIXED = 2, /* To set fixed config registers */
+};
+
+enum pm_usb_config_type {
+ USB_CONFIG_FIXED = 1, /* To set fixed config registers */
+};
+
/**
* struct zynqmp_pm_query_data - PM query data
* @qid: query ID
@@ -462,6 +482,11 @@ int zynqmp_pm_register_notifier(const u32 node, const u32 event,
int zynqmp_pm_feature(const u32 api_id);
int zynqmp_pm_set_feature_config(enum pm_feature_config_id id, u32 value);
int zynqmp_pm_get_feature_config(enum pm_feature_config_id id, u32 *payload);
+int zynqmp_pm_set_sd_config(u32 node, enum pm_sd_config_type config, u32 value);
+int zynqmp_pm_set_gem_config(u32 node, enum pm_gem_config_type config,
+ u32 value);
+int zynqmp_pm_set_usb_config(u32 node, enum pm_usb_config_type config,
+ u32 value);
#else
static inline int zynqmp_pm_get_api_version(u32 *version)
{
@@ -722,6 +747,27 @@ static inline int zynqmp_pm_get_feature_config(enum pm_feature_config_id id,
{
return -ENODEV;
}
+
+static inline int zynqmp_pm_set_sd_config(u32 node,
+ enum pm_sd_config_type config,
+ u32 value)
+{
+ return -ENODEV;
+}
+
+static inline int zynqmp_pm_set_gem_config(u32 node,
+ enum pm_gem_config_type config,
+ u32 value)
+{
+ return -ENODEV;
+}
+
+static inline int zynqmp_pm_set_usb_config(u32 node,
+ enum pm_usb_config_type config,
+ u32 value)
+{
+ return -ENODEV;
+}
#endif
#endif /* __FIRMWARE_ZYNQMP_H__ */
--
2.7.4
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