[PATCH v3 00/24] firmware: xilinx: Add xilinx specific sysfs interface

[PATCH v3 00/24] firmware: xilinx: Add xilinx specific sysfs interface

[Jolly Shah]

This patch series adds xilinx specific sysfs interface for below
purposes:
- Register access
- Set shutdown scope
- Set boot health status bit

Also this patch series removes eemi ops and adds API
corresponding to each eemi ops.

v3:
 - Remove eemi ops function pointers and call real functions
 - For ioctl eemi calls, make actual function calls rather than ioctl api
 
Rajan Vaja (24):
  firmware: xilinx: Remove eemi ops for get_api_version
  firmware: xilinx: Remove eemi ops for get_chipid
  firmware: xilinx: Remove eemi ops for query_data
  firmware: xilinx: Remove eemi ops for clock_enable
  firmware: xilinx: Remove eemi ops for clock_disable
  firmware: xilinx: Remove eemi ops for clock_getstate
  firmware: xilinx: Remove eemi ops for clock_setdivider
  firmware: xilinx: Remove eemi ops for clock_getdivider
  firmware: xilinx: Remove eemi ops for clock set/get rate
  firmware: xilinx: Remove eemi ops for clock set/get parent
  firmware: xilinx: Use APIs instead of IOCTLs
  firmware: xilinx: Remove eemi ops for reset_assert
  firmware: xilinx: Remove eemi ops for reset_get_status
  firmware: xilinx: Remove eemi ops for init_finalize
  firmware: xilinx: Remove eemi ops for set_suspend_mode
  firmware: xilinx: Remove eemi ops for request_node
  firmware: xilinx: Remove eemi ops for release_node
  firmware: xilinx: Remove eemi ops for set_requirement
  firmware: xilinx: Remove eemi ops for fpga related APIs
  firmware: xilinx: Add APIs to read/write GGS/PGGS registers
  firmware: xilinx: Add sysfs interface
  firmware: xilinx: Add system shutdown API interface
  firmware: xilinx: Add sysfs to set shutdown scope
  firmware: xilinx: Add sysfs and API to set boot health status

 .../ABI/stable/sysfs-driver-firmware-zynqmp        | 103 +++
 drivers/clk/zynqmp/clk-gate-zynqmp.c               |   9 +-
 drivers/clk/zynqmp/clk-mux-zynqmp.c                |   6 +-
 drivers/clk/zynqmp/clkc.c                          |  17 +-
 drivers/clk/zynqmp/divider.c                       |  12 +-
 drivers/clk/zynqmp/pll.c                           |  29 +-
 drivers/firmware/xilinx/zynqmp-debug.c             |   5 +-
 drivers/firmware/xilinx/zynqmp.c                   | 806 ++++++++++++++++++---
 drivers/fpga/zynqmp-fpga.c                         |  12 +-
 drivers/mmc/host/sdhci-of-arasan.c                 |  33 +-
 drivers/nvmem/zynqmp_nvmem.c                       |  11 +-
 drivers/reset/reset-zynqmp.c                       |  26 +-
 drivers/soc/xilinx/zynqmp_pm_domains.c             |  26 +-
 drivers/soc/xilinx/zynqmp_power.c                  |  17 +-
 drivers/spi/spi-zynqmp-gqspi.c                     |   5 -
 include/linux/firmware/xlnx-zynqmp.h               | 102 +--
 16 files changed, 924 insertions(+), 295 deletions(-)
 create mode 100644 Documentation/ABI/stable/sysfs-driver-firmware-zynqmp

-- 
2.7.4


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[PATCH v3 01/24] firmware: xilinx: Remove eemi ops for get_api_version

[Jolly Shah]

From: Rajan Vaja <rajan.vaja@xilinx.com>

Use direct function calls instead of using eemi ops. So remove
eemi ops for get_api_version and use direct function call.

Signed-off-by: Rajan Vaja <rajan.vaja@xilinx.com>
Signed-off-by: Jolly Shah <jolly.shah@xilinx.com>
---
 drivers/firmware/xilinx/zynqmp-debug.c | 2 +-
 drivers/firmware/xilinx/zynqmp.c       | 4 ++--
 drivers/soc/xilinx/zynqmp_power.c      | 4 ++--
 include/linux/firmware/xlnx-zynqmp.h   | 2 +-
 4 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/firmware/xilinx/zynqmp-debug.c b/drivers/firmware/xilinx/zynqmp-debug.c
index c6d0724..de4faf2 100644
--- a/drivers/firmware/xilinx/zynqmp-debug.c
+++ b/drivers/firmware/xilinx/zynqmp-debug.c
@@ -92,7 +92,7 @@ static int process_api_request(u32 pm_id, u64 *pm_api_arg, u32 *pm_api_ret)
 
 	switch (pm_id) {
 	case PM_GET_API_VERSION:
-		ret = eemi_ops->get_api_version(&pm_api_version);
+		ret = zynqmp_pm_get_api_version(&pm_api_version);
 		sprintf(debugfs_buf, "PM-API Version = %d.%d\n",
 			pm_api_version >> 16, pm_api_version & 0xffff);
 		break;
diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
index ecc339d..f7725d1 100644
--- a/drivers/firmware/xilinx/zynqmp.c
+++ b/drivers/firmware/xilinx/zynqmp.c
@@ -219,7 +219,7 @@ static u32 pm_tz_version;
  *
  * Return: Returns status, either success or error+reason
  */
-static int zynqmp_pm_get_api_version(u32 *version)
+int zynqmp_pm_get_api_version(u32 *version)
 {
 	u32 ret_payload[PAYLOAD_ARG_CNT];
 	int ret;
@@ -237,6 +237,7 @@ static int zynqmp_pm_get_api_version(u32 *version)
 
 	return ret;
 }
+EXPORT_SYMBOL_GPL(zynqmp_pm_get_api_version);
 
 /**
  * zynqmp_pm_get_chipid - Get silicon ID registers
@@ -708,7 +709,6 @@ static int zynqmp_pm_set_requirement(const u32 node, const u32 capabilities,
 }
 
 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,
diff --git a/drivers/soc/xilinx/zynqmp_power.c b/drivers/soc/xilinx/zynqmp_power.c
index 0922789..d327d9e 100644
--- a/drivers/soc/xilinx/zynqmp_power.c
+++ b/drivers/soc/xilinx/zynqmp_power.c
@@ -186,11 +186,11 @@ static int zynqmp_pm_probe(struct platform_device *pdev)
 	if (IS_ERR(eemi_ops))
 		return PTR_ERR(eemi_ops);
 
-	if (!eemi_ops->get_api_version || !eemi_ops->init_finalize)
+	if (!eemi_ops->init_finalize)
 		return -ENXIO;
 
 	eemi_ops->init_finalize();
-	eemi_ops->get_api_version(&pm_api_version);
+	zynqmp_pm_get_api_version(&pm_api_version);
 
 	/* Check PM API version number */
 	if (pm_api_version < ZYNQMP_PM_VERSION)
diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h
index 2cd12eb..7529383 100644
--- a/include/linux/firmware/xlnx-zynqmp.h
+++ b/include/linux/firmware/xlnx-zynqmp.h
@@ -286,7 +286,6 @@ struct zynqmp_pm_query_data {
 };
 
 struct zynqmp_eemi_ops {
-	int (*get_api_version)(u32 *version);
 	int (*get_chipid)(u32 *idcode, u32 *version);
 	int (*fpga_load)(const u64 address, const u32 size, const u32 flags);
 	int (*fpga_get_status)(u32 *value);
@@ -317,6 +316,7 @@ struct zynqmp_eemi_ops {
 			       const enum zynqmp_pm_request_ack ack);
 };
 
+int zynqmp_pm_get_api_version(u32 *version);
 int zynqmp_pm_invoke_fn(u32 pm_api_id, u32 arg0, u32 arg1,
 			u32 arg2, u32 arg3, u32 *ret_payload);
 
-- 
2.7.4


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[PATCH v3 02/24] firmware: xilinx: Remove eemi ops for get_chipid

[Jolly Shah]

From: Rajan Vaja <rajan.vaja@xilinx.com>

Use direct function call instead of eemi ops for get_chipid.

Signed-off-by: Rajan Vaja <rajan.vaja@xilinx.com>
Signed-off-by: Jolly Shah <jolly.shah@xilinx.com>
---
 drivers/firmware/xilinx/zynqmp.c     |  4 ++--
 drivers/nvmem/zynqmp_nvmem.c         | 11 +----------
 include/linux/firmware/xlnx-zynqmp.h |  2 +-
 3 files changed, 4 insertions(+), 13 deletions(-)

diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
index f7725d1..02d89e9 100644
--- a/drivers/firmware/xilinx/zynqmp.c
+++ b/drivers/firmware/xilinx/zynqmp.c
@@ -247,7 +247,7 @@ EXPORT_SYMBOL_GPL(zynqmp_pm_get_api_version);
  * 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)
+int zynqmp_pm_get_chipid(u32 *idcode, u32 *version)
 {
 	u32 ret_payload[PAYLOAD_ARG_CNT];
 	int ret;
@@ -261,6 +261,7 @@ static int zynqmp_pm_get_chipid(u32 *idcode, u32 *version)
 
 	return ret;
 }
+EXPORT_SYMBOL_GPL(zynqmp_pm_get_chipid);
 
 /**
  * zynqmp_pm_get_trustzone_version() - Get secure trustzone firmware version
@@ -709,7 +710,6 @@ static int zynqmp_pm_set_requirement(const u32 node, const u32 capabilities,
 }
 
 static const struct zynqmp_eemi_ops eemi_ops = {
-	.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/drivers/nvmem/zynqmp_nvmem.c b/drivers/nvmem/zynqmp_nvmem.c
index 5893543..e28d7b1 100644
--- a/drivers/nvmem/zynqmp_nvmem.c
+++ b/drivers/nvmem/zynqmp_nvmem.c
@@ -16,8 +16,6 @@ struct zynqmp_nvmem_data {
 	struct nvmem_device *nvmem;
 };
 
-static const struct zynqmp_eemi_ops *eemi_ops;
-
 static int zynqmp_nvmem_read(void *context, unsigned int offset,
 			     void *val, size_t bytes)
 {
@@ -25,10 +23,7 @@ static int zynqmp_nvmem_read(void *context, unsigned int offset,
 	int idcode, version;
 	struct zynqmp_nvmem_data *priv = context;
 
-	if (!eemi_ops->get_chipid)
-		return -ENXIO;
-
-	ret = eemi_ops->get_chipid(&idcode, &version);
+	ret = zynqmp_pm_get_chipid(&idcode, &version);
 	if (ret < 0)
 		return ret;
 
@@ -61,10 +56,6 @@ static int zynqmp_nvmem_probe(struct platform_device *pdev)
 	if (!priv)
 		return -ENOMEM;
 
-	eemi_ops = zynqmp_pm_get_eemi_ops();
-	if (IS_ERR(eemi_ops))
-		return PTR_ERR(eemi_ops);
-
 	priv->dev = dev;
 	econfig.dev = dev;
 	econfig.reg_read = zynqmp_nvmem_read;
diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h
index 7529383..84b4160 100644
--- a/include/linux/firmware/xlnx-zynqmp.h
+++ b/include/linux/firmware/xlnx-zynqmp.h
@@ -286,7 +286,6 @@ struct zynqmp_pm_query_data {
 };
 
 struct zynqmp_eemi_ops {
-	int (*get_chipid)(u32 *idcode, u32 *version);
 	int (*fpga_load)(const u64 address, const u32 size, const u32 flags);
 	int (*fpga_get_status)(u32 *value);
 	int (*query_data)(struct zynqmp_pm_query_data qdata, u32 *out);
@@ -317,6 +316,7 @@ struct zynqmp_eemi_ops {
 };
 
 int zynqmp_pm_get_api_version(u32 *version);
+int zynqmp_pm_get_chipid(u32 *idcode, u32 *version);
 int zynqmp_pm_invoke_fn(u32 pm_api_id, u32 arg0, u32 arg1,
 			u32 arg2, u32 arg3, u32 *ret_payload);
 
-- 
2.7.4


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[PATCH v3 03/24] firmware: xilinx: Remove eemi ops for query_data

[Jolly Shah]

From: Rajan Vaja <rajan.vaja@xilinx.com>

Use direct function call for query_data instead of using eemi ops.

Signed-off-by: Rajan Vaja <rajan.vaja@xilinx.com>
Signed-off-by: Jolly Shah <jolly.shah@xilinx.com>
---
 drivers/clk/zynqmp/clkc.c              | 17 ++++++-----------
 drivers/clk/zynqmp/divider.c           |  3 +--
 drivers/firmware/xilinx/zynqmp-debug.c |  3 +--
 drivers/firmware/xilinx/zynqmp.c       |  4 ++--
 include/linux/firmware/xlnx-zynqmp.h   |  2 +-
 5 files changed, 11 insertions(+), 18 deletions(-)

diff --git a/drivers/clk/zynqmp/clkc.c b/drivers/clk/zynqmp/clkc.c
index 10e89f2..5eed5ce 100644
--- a/drivers/clk/zynqmp/clkc.c
+++ b/drivers/clk/zynqmp/clkc.c
@@ -134,7 +134,6 @@ static struct clk_hw *(* const clk_topology[]) (const char *name, u32 clk_id,
 static struct zynqmp_clock *clock;
 static struct clk_hw_onecell_data *zynqmp_data;
 static unsigned int clock_max_idx;
-static const struct zynqmp_eemi_ops *eemi_ops;
 
 /**
  * zynqmp_is_valid_clock() - Check whether clock is valid or not
@@ -206,7 +205,7 @@ static int zynqmp_pm_clock_get_num_clocks(u32 *nclocks)
 
 	qdata.qid = PM_QID_CLOCK_GET_NUM_CLOCKS;
 
-	ret = eemi_ops->query_data(qdata, ret_payload);
+	ret = zynqmp_pm_query_data(qdata, ret_payload);
 	*nclocks = ret_payload[1];
 
 	return ret;
@@ -231,7 +230,7 @@ static int zynqmp_pm_clock_get_name(u32 clock_id,
 	qdata.qid = PM_QID_CLOCK_GET_NAME;
 	qdata.arg1 = clock_id;
 
-	eemi_ops->query_data(qdata, ret_payload);
+	zynqmp_pm_query_data(qdata, ret_payload);
 	memcpy(response, ret_payload, sizeof(*response));
 
 	return 0;
@@ -265,7 +264,7 @@ static int zynqmp_pm_clock_get_topology(u32 clock_id, u32 index,
 	qdata.arg1 = clock_id;
 	qdata.arg2 = index;
 
-	ret = eemi_ops->query_data(qdata, ret_payload);
+	ret = zynqmp_pm_query_data(qdata, ret_payload);
 	memcpy(response, &ret_payload[1], sizeof(*response));
 
 	return ret;
@@ -296,7 +295,7 @@ struct clk_hw *zynqmp_clk_register_fixed_factor(const char *name, u32 clk_id,
 	qdata.qid = PM_QID_CLOCK_GET_FIXEDFACTOR_PARAMS;
 	qdata.arg1 = clk_id;
 
-	ret = eemi_ops->query_data(qdata, ret_payload);
+	ret = zynqmp_pm_query_data(qdata, ret_payload);
 	if (ret)
 		return ERR_PTR(ret);
 
@@ -339,7 +338,7 @@ static int zynqmp_pm_clock_get_parents(u32 clock_id, u32 index,
 	qdata.arg1 = clock_id;
 	qdata.arg2 = index;
 
-	ret = eemi_ops->query_data(qdata, ret_payload);
+	ret = zynqmp_pm_query_data(qdata, ret_payload);
 	memcpy(response, &ret_payload[1], sizeof(*response));
 
 	return ret;
@@ -364,7 +363,7 @@ static int zynqmp_pm_clock_get_attributes(u32 clock_id,
 	qdata.qid = PM_QID_CLOCK_GET_ATTRIBUTES;
 	qdata.arg1 = clock_id;
 
-	ret = eemi_ops->query_data(qdata, ret_payload);
+	ret = zynqmp_pm_query_data(qdata, ret_payload);
 	memcpy(response, &ret_payload[1], sizeof(*response));
 
 	return ret;
@@ -738,10 +737,6 @@ static int zynqmp_clock_probe(struct platform_device *pdev)
 	int ret;
 	struct device *dev = &pdev->dev;
 
-	eemi_ops = zynqmp_pm_get_eemi_ops();
-	if (IS_ERR(eemi_ops))
-		return PTR_ERR(eemi_ops);
-
 	ret = zynqmp_clk_setup(dev->of_node);
 
 	return ret;
diff --git a/drivers/clk/zynqmp/divider.c b/drivers/clk/zynqmp/divider.c
index 4be2cc7..e21f4ea 100644
--- a/drivers/clk/zynqmp/divider.c
+++ b/drivers/clk/zynqmp/divider.c
@@ -258,7 +258,6 @@ static const struct clk_ops zynqmp_clk_divider_ops = {
  */
 u32 zynqmp_clk_get_max_divisor(u32 clk_id, u32 type)
 {
-	const struct zynqmp_eemi_ops *eemi_ops = zynqmp_pm_get_eemi_ops();
 	struct zynqmp_pm_query_data qdata = {0};
 	u32 ret_payload[PAYLOAD_ARG_CNT];
 	int ret;
@@ -266,7 +265,7 @@ u32 zynqmp_clk_get_max_divisor(u32 clk_id, u32 type)
 	qdata.qid = PM_QID_CLOCK_GET_MAX_DIVISOR;
 	qdata.arg1 = clk_id;
 	qdata.arg2 = type;
-	ret = eemi_ops->query_data(qdata, ret_payload);
+	ret = zynqmp_pm_query_data(qdata, ret_payload);
 	/*
 	 * To maintain backward compatibility return maximum possible value
 	 * (0xFFFF) if query for max divisor is not successful.
diff --git a/drivers/firmware/xilinx/zynqmp-debug.c b/drivers/firmware/xilinx/zynqmp-debug.c
index de4faf2..c396f29 100644
--- a/drivers/firmware/xilinx/zynqmp-debug.c
+++ b/drivers/firmware/xilinx/zynqmp-debug.c
@@ -85,7 +85,6 @@ static int get_pm_api_id(char *pm_api_req, u32 *pm_id)
 
 static int process_api_request(u32 pm_id, u64 *pm_api_arg, u32 *pm_api_ret)
 {
-	const struct zynqmp_eemi_ops *eemi_ops = zynqmp_pm_get_eemi_ops();
 	u32 pm_api_version;
 	int ret;
 	struct zynqmp_pm_query_data qdata = {0};
@@ -102,7 +101,7 @@ static int process_api_request(u32 pm_id, u64 *pm_api_arg, u32 *pm_api_ret)
 		qdata.arg2 = pm_api_arg[2];
 		qdata.arg3 = pm_api_arg[3];
 
-		ret = eemi_ops->query_data(qdata, pm_api_ret);
+		ret = zynqmp_pm_query_data(qdata, pm_api_ret);
 		if (ret)
 			break;
 
diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
index 02d89e9..e25a540 100644
--- a/drivers/firmware/xilinx/zynqmp.c
+++ b/drivers/firmware/xilinx/zynqmp.c
@@ -326,7 +326,7 @@ static int get_set_conduit_method(struct device_node *np)
  *
  * Return: Returns status, either success or error+reason
  */
-static int zynqmp_pm_query_data(struct zynqmp_pm_query_data qdata, u32 *out)
+int zynqmp_pm_query_data(struct zynqmp_pm_query_data qdata, u32 *out)
 {
 	int ret;
 
@@ -340,6 +340,7 @@ static int zynqmp_pm_query_data(struct zynqmp_pm_query_data qdata, u32 *out)
 	 */
 	return qdata.qid == PM_QID_CLOCK_GET_NAME ? 0 : ret;
 }
+EXPORT_SYMBOL_GPL(zynqmp_pm_query_data);
 
 /**
  * zynqmp_pm_clock_enable() - Enable the clock for given id
@@ -710,7 +711,6 @@ static int zynqmp_pm_set_requirement(const u32 node, const u32 capabilities,
 }
 
 static const struct zynqmp_eemi_ops eemi_ops = {
-	.query_data = zynqmp_pm_query_data,
 	.clock_enable = zynqmp_pm_clock_enable,
 	.clock_disable = zynqmp_pm_clock_disable,
 	.clock_getstate = zynqmp_pm_clock_getstate,
diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h
index 84b4160..283d039 100644
--- a/include/linux/firmware/xlnx-zynqmp.h
+++ b/include/linux/firmware/xlnx-zynqmp.h
@@ -288,7 +288,6 @@ struct zynqmp_pm_query_data {
 struct zynqmp_eemi_ops {
 	int (*fpga_load)(const u64 address, const u32 size, const u32 flags);
 	int (*fpga_get_status)(u32 *value);
-	int (*query_data)(struct zynqmp_pm_query_data qdata, u32 *out);
 	int (*clock_enable)(u32 clock_id);
 	int (*clock_disable)(u32 clock_id);
 	int (*clock_getstate)(u32 clock_id, u32 *state);
@@ -317,6 +316,7 @@ struct zynqmp_eemi_ops {
 
 int zynqmp_pm_get_api_version(u32 *version);
 int zynqmp_pm_get_chipid(u32 *idcode, u32 *version);
+int zynqmp_pm_query_data(struct zynqmp_pm_query_data qdata, u32 *out);
 int zynqmp_pm_invoke_fn(u32 pm_api_id, u32 arg0, u32 arg1,
 			u32 arg2, u32 arg3, u32 *ret_payload);
 
-- 
2.7.4


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[PATCH v3 04/24] firmware: xilinx: Remove eemi ops for clock_enable

[Jolly Shah]

From: Rajan Vaja <rajan.vaja@xilinx.com>

Use direct function call for clock_enable instead of eemi ops.

Signed-off-by: Rajan Vaja <rajan.vaja@xilinx.com>
Signed-off-by: Jolly Shah <jolly.shah@xilinx.com>
---
 drivers/clk/zynqmp/clk-gate-zynqmp.c | 2 +-
 drivers/clk/zynqmp/pll.c             | 3 +--
 drivers/firmware/xilinx/zynqmp.c     | 4 ++--
 include/linux/firmware/xlnx-zynqmp.h | 2 +-
 4 files changed, 5 insertions(+), 6 deletions(-)

diff --git a/drivers/clk/zynqmp/clk-gate-zynqmp.c b/drivers/clk/zynqmp/clk-gate-zynqmp.c
index 83b236f..437b921 100644
--- a/drivers/clk/zynqmp/clk-gate-zynqmp.c
+++ b/drivers/clk/zynqmp/clk-gate-zynqmp.c
@@ -39,7 +39,7 @@ static int zynqmp_clk_gate_enable(struct clk_hw *hw)
 	int ret;
 	const struct zynqmp_eemi_ops *eemi_ops = zynqmp_pm_get_eemi_ops();
 
-	ret = eemi_ops->clock_enable(clk_id);
+	ret = zynqmp_pm_clock_enable(clk_id);
 
 	if (ret)
 		pr_warn_once("%s() clock enabled failed for %s, ret = %d\n",
diff --git a/drivers/clk/zynqmp/pll.c b/drivers/clk/zynqmp/pll.c
index 89b5995..153aa67 100644
--- a/drivers/clk/zynqmp/pll.c
+++ b/drivers/clk/zynqmp/pll.c
@@ -246,12 +246,11 @@ static int zynqmp_pll_enable(struct clk_hw *hw)
 	const char *clk_name = clk_hw_get_name(hw);
 	u32 clk_id = clk->clk_id;
 	int ret;
-	const struct zynqmp_eemi_ops *eemi_ops = zynqmp_pm_get_eemi_ops();
 
 	if (zynqmp_pll_is_enabled(hw))
 		return 0;
 
-	ret = eemi_ops->clock_enable(clk_id);
+	ret = zynqmp_pm_clock_enable(clk_id);
 	if (ret)
 		pr_warn_once("%s() clock enable failed for %s, ret = %d\n",
 			     __func__, clk_name, ret);
diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
index e25a540..dd98214 100644
--- a/drivers/firmware/xilinx/zynqmp.c
+++ b/drivers/firmware/xilinx/zynqmp.c
@@ -351,10 +351,11 @@ EXPORT_SYMBOL_GPL(zynqmp_pm_query_data);
  *
  * Return: Returns status, either success or error+reason
  */
-static int zynqmp_pm_clock_enable(u32 clock_id)
+int zynqmp_pm_clock_enable(u32 clock_id)
 {
 	return zynqmp_pm_invoke_fn(PM_CLOCK_ENABLE, clock_id, 0, 0, 0, NULL);
 }
+EXPORT_SYMBOL_GPL(zynqmp_pm_clock_enable);
 
 /**
  * zynqmp_pm_clock_disable() - Disable the clock for given id
@@ -711,7 +712,6 @@ static int zynqmp_pm_set_requirement(const u32 node, const u32 capabilities,
 }
 
 static const struct zynqmp_eemi_ops eemi_ops = {
-	.clock_enable = zynqmp_pm_clock_enable,
 	.clock_disable = zynqmp_pm_clock_disable,
 	.clock_getstate = zynqmp_pm_clock_getstate,
 	.clock_setdivider = zynqmp_pm_clock_setdivider,
diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h
index 283d039..7dc72d3 100644
--- a/include/linux/firmware/xlnx-zynqmp.h
+++ b/include/linux/firmware/xlnx-zynqmp.h
@@ -288,7 +288,6 @@ struct zynqmp_pm_query_data {
 struct zynqmp_eemi_ops {
 	int (*fpga_load)(const u64 address, const u32 size, const u32 flags);
 	int (*fpga_get_status)(u32 *value);
-	int (*clock_enable)(u32 clock_id);
 	int (*clock_disable)(u32 clock_id);
 	int (*clock_getstate)(u32 clock_id, u32 *state);
 	int (*clock_setdivider)(u32 clock_id, u32 divider);
@@ -317,6 +316,7 @@ struct zynqmp_eemi_ops {
 int zynqmp_pm_get_api_version(u32 *version);
 int zynqmp_pm_get_chipid(u32 *idcode, u32 *version);
 int zynqmp_pm_query_data(struct zynqmp_pm_query_data qdata, u32 *out);
+int zynqmp_pm_clock_enable(u32 clock_id);
 int zynqmp_pm_invoke_fn(u32 pm_api_id, u32 arg0, u32 arg1,
 			u32 arg2, u32 arg3, u32 *ret_payload);
 
-- 
2.7.4


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[PATCH v3 05/24] firmware: xilinx: Remove eemi ops for clock_disable

[Jolly Shah]

From: Rajan Vaja <rajan.vaja@xilinx.com>

Use direct function call for clock_disable instead using of eemi ops.

Signed-off-by: Rajan Vaja <rajan.vaja@xilinx.com>
Signed-off-by: Jolly Shah <jolly.shah@xilinx.com>
---
 drivers/clk/zynqmp/clk-gate-zynqmp.c | 4 +---
 drivers/clk/zynqmp/pll.c             | 3 +--
 drivers/firmware/xilinx/zynqmp.c     | 4 ++--
 include/linux/firmware/xlnx-zynqmp.h | 2 +-
 4 files changed, 5 insertions(+), 8 deletions(-)

diff --git a/drivers/clk/zynqmp/clk-gate-zynqmp.c b/drivers/clk/zynqmp/clk-gate-zynqmp.c
index 437b921..11f1b97 100644
--- a/drivers/clk/zynqmp/clk-gate-zynqmp.c
+++ b/drivers/clk/zynqmp/clk-gate-zynqmp.c
@@ -37,7 +37,6 @@ static int zynqmp_clk_gate_enable(struct clk_hw *hw)
 	const char *clk_name = clk_hw_get_name(hw);
 	u32 clk_id = gate->clk_id;
 	int ret;
-	const struct zynqmp_eemi_ops *eemi_ops = zynqmp_pm_get_eemi_ops();
 
 	ret = zynqmp_pm_clock_enable(clk_id);
 
@@ -58,9 +57,8 @@ static void zynqmp_clk_gate_disable(struct clk_hw *hw)
 	const char *clk_name = clk_hw_get_name(hw);
 	u32 clk_id = gate->clk_id;
 	int ret;
-	const struct zynqmp_eemi_ops *eemi_ops = zynqmp_pm_get_eemi_ops();
 
-	ret = eemi_ops->clock_disable(clk_id);
+	ret = zynqmp_pm_clock_disable(clk_id);
 
 	if (ret)
 		pr_warn_once("%s() clock disable failed for %s, ret = %d\n",
diff --git a/drivers/clk/zynqmp/pll.c b/drivers/clk/zynqmp/pll.c
index 153aa67..38b8dbc 100644
--- a/drivers/clk/zynqmp/pll.c
+++ b/drivers/clk/zynqmp/pll.c
@@ -268,12 +268,11 @@ static void zynqmp_pll_disable(struct clk_hw *hw)
 	const char *clk_name = clk_hw_get_name(hw);
 	u32 clk_id = clk->clk_id;
 	int ret;
-	const struct zynqmp_eemi_ops *eemi_ops = zynqmp_pm_get_eemi_ops();
 
 	if (!zynqmp_pll_is_enabled(hw))
 		return;
 
-	ret = eemi_ops->clock_disable(clk_id);
+	ret = zynqmp_pm_clock_disable(clk_id);
 	if (ret)
 		pr_warn_once("%s() clock disable failed for %s, ret = %d\n",
 			     __func__, clk_name, ret);
diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
index dd98214..00cdaaf 100644
--- a/drivers/firmware/xilinx/zynqmp.c
+++ b/drivers/firmware/xilinx/zynqmp.c
@@ -366,10 +366,11 @@ EXPORT_SYMBOL_GPL(zynqmp_pm_clock_enable);
  *
  * Return: Returns status, either success or error+reason
  */
-static int zynqmp_pm_clock_disable(u32 clock_id)
+int zynqmp_pm_clock_disable(u32 clock_id)
 {
 	return zynqmp_pm_invoke_fn(PM_CLOCK_DISABLE, clock_id, 0, 0, 0, NULL);
 }
+EXPORT_SYMBOL_GPL(zynqmp_pm_clock_disable);
 
 /**
  * zynqmp_pm_clock_getstate() - Get the clock state for given id
@@ -712,7 +713,6 @@ static int zynqmp_pm_set_requirement(const u32 node, const u32 capabilities,
 }
 
 static const struct zynqmp_eemi_ops eemi_ops = {
-	.clock_disable = zynqmp_pm_clock_disable,
 	.clock_getstate = zynqmp_pm_clock_getstate,
 	.clock_setdivider = zynqmp_pm_clock_setdivider,
 	.clock_getdivider = zynqmp_pm_clock_getdivider,
diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h
index 7dc72d3..d2f5677 100644
--- a/include/linux/firmware/xlnx-zynqmp.h
+++ b/include/linux/firmware/xlnx-zynqmp.h
@@ -288,7 +288,6 @@ struct zynqmp_pm_query_data {
 struct zynqmp_eemi_ops {
 	int (*fpga_load)(const u64 address, const u32 size, const u32 flags);
 	int (*fpga_get_status)(u32 *value);
-	int (*clock_disable)(u32 clock_id);
 	int (*clock_getstate)(u32 clock_id, u32 *state);
 	int (*clock_setdivider)(u32 clock_id, u32 divider);
 	int (*clock_getdivider)(u32 clock_id, u32 *divider);
@@ -317,6 +316,7 @@ int zynqmp_pm_get_api_version(u32 *version);
 int zynqmp_pm_get_chipid(u32 *idcode, u32 *version);
 int zynqmp_pm_query_data(struct zynqmp_pm_query_data qdata, u32 *out);
 int zynqmp_pm_clock_enable(u32 clock_id);
+int zynqmp_pm_clock_disable(u32 clock_id);
 int zynqmp_pm_invoke_fn(u32 pm_api_id, u32 arg0, u32 arg1,
 			u32 arg2, u32 arg3, u32 *ret_payload);
 
-- 
2.7.4


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[PATCH v3 06/24] firmware: xilinx: Remove eemi ops for clock_getstate

[Jolly Shah]

From: Rajan Vaja <rajan.vaja@xilinx.com>

Use direct function call instead of eemi ops for clock_getstate.

Signed-off-by: Rajan Vaja <rajan.vaja@xilinx.com>
Signed-off-by: Jolly Shah <jolly.shah@xilinx.com>
---
 drivers/clk/zynqmp/clk-gate-zynqmp.c | 3 +--
 drivers/clk/zynqmp/pll.c             | 3 +--
 drivers/firmware/xilinx/zynqmp.c     | 4 ++--
 include/linux/firmware/xlnx-zynqmp.h | 2 +-
 4 files changed, 5 insertions(+), 7 deletions(-)

diff --git a/drivers/clk/zynqmp/clk-gate-zynqmp.c b/drivers/clk/zynqmp/clk-gate-zynqmp.c
index 11f1b97..10c9b88 100644
--- a/drivers/clk/zynqmp/clk-gate-zynqmp.c
+++ b/drivers/clk/zynqmp/clk-gate-zynqmp.c
@@ -77,9 +77,8 @@ static int zynqmp_clk_gate_is_enabled(struct clk_hw *hw)
 	const char *clk_name = clk_hw_get_name(hw);
 	u32 clk_id = gate->clk_id;
 	int state, ret;
-	const struct zynqmp_eemi_ops *eemi_ops = zynqmp_pm_get_eemi_ops();
 
-	ret = eemi_ops->clock_getstate(clk_id, &state);
+	ret = zynqmp_pm_clock_getstate(clk_id, &state);
 	if (ret) {
 		pr_warn_once("%s() clock get state failed for %s, ret = %d\n",
 			     __func__, clk_name, ret);
diff --git a/drivers/clk/zynqmp/pll.c b/drivers/clk/zynqmp/pll.c
index 38b8dbc..41f376a 100644
--- a/drivers/clk/zynqmp/pll.c
+++ b/drivers/clk/zynqmp/pll.c
@@ -222,9 +222,8 @@ static int zynqmp_pll_is_enabled(struct clk_hw *hw)
 	u32 clk_id = clk->clk_id;
 	unsigned int state;
 	int ret;
-	const struct zynqmp_eemi_ops *eemi_ops = zynqmp_pm_get_eemi_ops();
 
-	ret = eemi_ops->clock_getstate(clk_id, &state);
+	ret = zynqmp_pm_clock_getstate(clk_id, &state);
 	if (ret) {
 		pr_warn_once("%s() clock get state failed for %s, ret = %d\n",
 			     __func__, clk_name, ret);
diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
index 00cdaaf..8a0d5af 100644
--- a/drivers/firmware/xilinx/zynqmp.c
+++ b/drivers/firmware/xilinx/zynqmp.c
@@ -382,7 +382,7 @@ EXPORT_SYMBOL_GPL(zynqmp_pm_clock_disable);
  *
  * Return: Returns status, either success or error+reason
  */
-static int zynqmp_pm_clock_getstate(u32 clock_id, u32 *state)
+int zynqmp_pm_clock_getstate(u32 clock_id, u32 *state)
 {
 	u32 ret_payload[PAYLOAD_ARG_CNT];
 	int ret;
@@ -393,6 +393,7 @@ static int zynqmp_pm_clock_getstate(u32 clock_id, u32 *state)
 
 	return ret;
 }
+EXPORT_SYMBOL_GPL(zynqmp_pm_clock_getstate);
 
 /**
  * zynqmp_pm_clock_setdivider() - Set the clock divider for given id
@@ -713,7 +714,6 @@ static int zynqmp_pm_set_requirement(const u32 node, const u32 capabilities,
 }
 
 static const struct zynqmp_eemi_ops eemi_ops = {
-	.clock_getstate = zynqmp_pm_clock_getstate,
 	.clock_setdivider = zynqmp_pm_clock_setdivider,
 	.clock_getdivider = zynqmp_pm_clock_getdivider,
 	.clock_setrate = zynqmp_pm_clock_setrate,
diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h
index d2f5677..44c6702 100644
--- a/include/linux/firmware/xlnx-zynqmp.h
+++ b/include/linux/firmware/xlnx-zynqmp.h
@@ -288,7 +288,6 @@ struct zynqmp_pm_query_data {
 struct zynqmp_eemi_ops {
 	int (*fpga_load)(const u64 address, const u32 size, const u32 flags);
 	int (*fpga_get_status)(u32 *value);
-	int (*clock_getstate)(u32 clock_id, u32 *state);
 	int (*clock_setdivider)(u32 clock_id, u32 divider);
 	int (*clock_getdivider)(u32 clock_id, u32 *divider);
 	int (*clock_setrate)(u32 clock_id, u64 rate);
@@ -317,6 +316,7 @@ int zynqmp_pm_get_chipid(u32 *idcode, u32 *version);
 int zynqmp_pm_query_data(struct zynqmp_pm_query_data qdata, u32 *out);
 int zynqmp_pm_clock_enable(u32 clock_id);
 int zynqmp_pm_clock_disable(u32 clock_id);
+int zynqmp_pm_clock_getstate(u32 clock_id, u32 *state);
 int zynqmp_pm_invoke_fn(u32 pm_api_id, u32 arg0, u32 arg1,
 			u32 arg2, u32 arg3, u32 *ret_payload);
 
-- 
2.7.4


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[PATCH v3 07/24] firmware: xilinx: Remove eemi ops for clock_setdivider

[Jolly Shah]

From: Rajan Vaja <rajan.vaja@xilinx.com>

Use direct function call instead of using eemi ops for
clock_setdivider.

Signed-off-by: Rajan Vaja <rajan.vaja@xilinx.com>
Signed-off-by: Jolly Shah <jolly.shah@xilinx.com>
---
 drivers/clk/zynqmp/divider.c         | 3 +--
 drivers/clk/zynqmp/pll.c             | 4 ++--
 drivers/firmware/xilinx/zynqmp.c     | 4 ++--
 include/linux/firmware/xlnx-zynqmp.h | 2 +-
 4 files changed, 6 insertions(+), 7 deletions(-)

diff --git a/drivers/clk/zynqmp/divider.c b/drivers/clk/zynqmp/divider.c
index e21f4ea..13041cd 100644
--- a/drivers/clk/zynqmp/divider.c
+++ b/drivers/clk/zynqmp/divider.c
@@ -219,7 +219,6 @@ static int zynqmp_clk_divider_set_rate(struct clk_hw *hw, unsigned long rate,
 	u32 div_type = divider->div_type;
 	u32 value, div;
 	int ret;
-	const struct zynqmp_eemi_ops *eemi_ops = zynqmp_pm_get_eemi_ops();
 
 	value = zynqmp_divider_get_val(parent_rate, rate, divider->flags);
 	if (div_type == TYPE_DIV1) {
@@ -233,7 +232,7 @@ static int zynqmp_clk_divider_set_rate(struct clk_hw *hw, unsigned long rate,
 	if (divider->flags & CLK_DIVIDER_POWER_OF_TWO)
 		div = __ffs(div);
 
-	ret = eemi_ops->clock_setdivider(clk_id, div);
+	ret = zynqmp_pm_clock_setdivider(clk_id, div);
 
 	if (ret)
 		pr_warn_once("%s() set divider failed for %s, ret = %d\n",
diff --git a/drivers/clk/zynqmp/pll.c b/drivers/clk/zynqmp/pll.c
index 41f376a..95fad06 100644
--- a/drivers/clk/zynqmp/pll.c
+++ b/drivers/clk/zynqmp/pll.c
@@ -187,7 +187,7 @@ static int zynqmp_pll_set_rate(struct clk_hw *hw, unsigned long rate,
 		rate = parent_rate * m;
 		frac = (parent_rate * f) / FRAC_DIV;
 
-		ret = eemi_ops->clock_setdivider(clk_id, m);
+		ret = zynqmp_pm_clock_setdivider(clk_id, m);
 		if (ret == -EUSERS)
 			WARN(1, "More than allowed devices are using the %s, which is forbidden\n",
 			     clk_name);
@@ -201,7 +201,7 @@ static int zynqmp_pll_set_rate(struct clk_hw *hw, unsigned long rate,
 
 	fbdiv = DIV_ROUND_CLOSEST(rate, parent_rate);
 	fbdiv = clamp_t(u32, fbdiv, PLL_FBDIV_MIN, PLL_FBDIV_MAX);
-	ret = eemi_ops->clock_setdivider(clk_id, fbdiv);
+	ret = zynqmp_pm_clock_setdivider(clk_id, fbdiv);
 	if (ret)
 		pr_warn_once("%s() set divider failed for %s, ret = %d\n",
 			     __func__, clk_name, ret);
diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
index 8a0d5af..eb39735 100644
--- a/drivers/firmware/xilinx/zynqmp.c
+++ b/drivers/firmware/xilinx/zynqmp.c
@@ -405,11 +405,12 @@ EXPORT_SYMBOL_GPL(zynqmp_pm_clock_getstate);
  *
  * Return: Returns status, either success or error+reason
  */
-static int zynqmp_pm_clock_setdivider(u32 clock_id, u32 divider)
+int zynqmp_pm_clock_setdivider(u32 clock_id, u32 divider)
 {
 	return zynqmp_pm_invoke_fn(PM_CLOCK_SETDIVIDER, clock_id, divider,
 				   0, 0, NULL);
 }
+EXPORT_SYMBOL_GPL(zynqmp_pm_clock_setdivider);
 
 /**
  * zynqmp_pm_clock_getdivider() - Get the clock divider for given id
@@ -714,7 +715,6 @@ static int zynqmp_pm_set_requirement(const u32 node, const u32 capabilities,
 }
 
 static const struct zynqmp_eemi_ops eemi_ops = {
-	.clock_setdivider = zynqmp_pm_clock_setdivider,
 	.clock_getdivider = zynqmp_pm_clock_getdivider,
 	.clock_setrate = zynqmp_pm_clock_setrate,
 	.clock_getrate = zynqmp_pm_clock_getrate,
diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h
index 44c6702..412b32f 100644
--- a/include/linux/firmware/xlnx-zynqmp.h
+++ b/include/linux/firmware/xlnx-zynqmp.h
@@ -288,7 +288,6 @@ struct zynqmp_pm_query_data {
 struct zynqmp_eemi_ops {
 	int (*fpga_load)(const u64 address, const u32 size, const u32 flags);
 	int (*fpga_get_status)(u32 *value);
-	int (*clock_setdivider)(u32 clock_id, u32 divider);
 	int (*clock_getdivider)(u32 clock_id, u32 *divider);
 	int (*clock_setrate)(u32 clock_id, u64 rate);
 	int (*clock_getrate)(u32 clock_id, u64 *rate);
@@ -317,6 +316,7 @@ int zynqmp_pm_query_data(struct zynqmp_pm_query_data qdata, u32 *out);
 int zynqmp_pm_clock_enable(u32 clock_id);
 int zynqmp_pm_clock_disable(u32 clock_id);
 int zynqmp_pm_clock_getstate(u32 clock_id, u32 *state);
+int zynqmp_pm_clock_setdivider(u32 clock_id, u32 divider);
 int zynqmp_pm_invoke_fn(u32 pm_api_id, u32 arg0, u32 arg1,
 			u32 arg2, u32 arg3, u32 *ret_payload);
 
-- 
2.7.4


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[PATCH v3 08/24] firmware: xilinx: Remove eemi ops for clock_getdivider

[Jolly Shah]

From: Rajan Vaja <rajan.vaja@xilinx.com>

Use direct function call instead of using eemi ops for
clock_getdivider.

Signed-off-by: Rajan Vaja <rajan.vaja@xilinx.com>
Signed-off-by: Jolly Shah <jolly.shah@xilinx.com>
---
 drivers/clk/zynqmp/divider.c         | 6 ++----
 drivers/clk/zynqmp/pll.c             | 2 +-
 drivers/firmware/xilinx/zynqmp.c     | 4 ++--
 include/linux/firmware/xlnx-zynqmp.h | 2 +-
 4 files changed, 6 insertions(+), 8 deletions(-)

diff --git a/drivers/clk/zynqmp/divider.c b/drivers/clk/zynqmp/divider.c
index 13041cd..8eed715 100644
--- a/drivers/clk/zynqmp/divider.c
+++ b/drivers/clk/zynqmp/divider.c
@@ -83,9 +83,8 @@ static unsigned long zynqmp_clk_divider_recalc_rate(struct clk_hw *hw,
 	u32 div_type = divider->div_type;
 	u32 div, value;
 	int ret;
-	const struct zynqmp_eemi_ops *eemi_ops = zynqmp_pm_get_eemi_ops();
 
-	ret = eemi_ops->clock_getdivider(clk_id, &div);
+	ret = zynqmp_pm_clock_getdivider(clk_id, &div);
 
 	if (ret)
 		pr_warn_once("%s() get divider failed for %s, ret = %d\n",
@@ -163,11 +162,10 @@ static long zynqmp_clk_divider_round_rate(struct clk_hw *hw,
 	u32 div_type = divider->div_type;
 	u32 bestdiv;
 	int ret;
-	const struct zynqmp_eemi_ops *eemi_ops = zynqmp_pm_get_eemi_ops();
 
 	/* if read only, just return current value */
 	if (divider->flags & CLK_DIVIDER_READ_ONLY) {
-		ret = eemi_ops->clock_getdivider(clk_id, &bestdiv);
+		ret = zynqmp_pm_clock_getdivider(clk_id, &bestdiv);
 
 		if (ret)
 			pr_warn_once("%s() get divider failed for %s, ret = %d\n",
diff --git a/drivers/clk/zynqmp/pll.c b/drivers/clk/zynqmp/pll.c
index 95fad06..73fb5bb 100644
--- a/drivers/clk/zynqmp/pll.c
+++ b/drivers/clk/zynqmp/pll.c
@@ -141,7 +141,7 @@ static unsigned long zynqmp_pll_recalc_rate(struct clk_hw *hw,
 	int ret;
 	const struct zynqmp_eemi_ops *eemi_ops = zynqmp_pm_get_eemi_ops();
 
-	ret = eemi_ops->clock_getdivider(clk_id, &fbdiv);
+	ret = zynqmp_pm_clock_getdivider(clk_id, &fbdiv);
 	if (ret)
 		pr_warn_once("%s() get divider failed for %s, ret = %d\n",
 			     __func__, clk_name, ret);
diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
index eb39735..2fc6e17 100644
--- a/drivers/firmware/xilinx/zynqmp.c
+++ b/drivers/firmware/xilinx/zynqmp.c
@@ -422,7 +422,7 @@ EXPORT_SYMBOL_GPL(zynqmp_pm_clock_setdivider);
  *
  * Return: Returns status, either success or error+reason
  */
-static int zynqmp_pm_clock_getdivider(u32 clock_id, u32 *divider)
+int zynqmp_pm_clock_getdivider(u32 clock_id, u32 *divider)
 {
 	u32 ret_payload[PAYLOAD_ARG_CNT];
 	int ret;
@@ -433,6 +433,7 @@ static int zynqmp_pm_clock_getdivider(u32 clock_id, u32 *divider)
 
 	return ret;
 }
+EXPORT_SYMBOL_GPL(zynqmp_pm_clock_getdivider);
 
 /**
  * zynqmp_pm_clock_setrate() - Set the clock rate for given id
@@ -715,7 +716,6 @@ static int zynqmp_pm_set_requirement(const u32 node, const u32 capabilities,
 }
 
 static const struct zynqmp_eemi_ops eemi_ops = {
-	.clock_getdivider = zynqmp_pm_clock_getdivider,
 	.clock_setrate = zynqmp_pm_clock_setrate,
 	.clock_getrate = zynqmp_pm_clock_getrate,
 	.clock_setparent = zynqmp_pm_clock_setparent,
diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h
index 412b32f..b55232e 100644
--- a/include/linux/firmware/xlnx-zynqmp.h
+++ b/include/linux/firmware/xlnx-zynqmp.h
@@ -288,7 +288,6 @@ struct zynqmp_pm_query_data {
 struct zynqmp_eemi_ops {
 	int (*fpga_load)(const u64 address, const u32 size, const u32 flags);
 	int (*fpga_get_status)(u32 *value);
-	int (*clock_getdivider)(u32 clock_id, u32 *divider);
 	int (*clock_setrate)(u32 clock_id, u64 rate);
 	int (*clock_getrate)(u32 clock_id, u64 *rate);
 	int (*clock_setparent)(u32 clock_id, u32 parent_id);
@@ -317,6 +316,7 @@ int zynqmp_pm_clock_enable(u32 clock_id);
 int zynqmp_pm_clock_disable(u32 clock_id);
 int zynqmp_pm_clock_getstate(u32 clock_id, u32 *state);
 int zynqmp_pm_clock_setdivider(u32 clock_id, u32 divider);
+int zynqmp_pm_clock_getdivider(u32 clock_id, u32 *divider);
 int zynqmp_pm_invoke_fn(u32 pm_api_id, u32 arg0, u32 arg1,
 			u32 arg2, u32 arg3, u32 *ret_payload);
 
-- 
2.7.4


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[PATCH v3 09/24] firmware: xilinx: Remove eemi ops for clock set/get rate

[Jolly Shah]

From: Rajan Vaja <rajan.vaja@xilinx.com>

Use direct function call instead of eemi ops for clock set/get rate.

Signed-off-by: Rajan Vaja <rajan.vaja@xilinx.com>
Signed-off-by: Jolly Shah <jolly.shah@xilinx.com>
---
 drivers/firmware/xilinx/zynqmp.c     | 8 ++++----
 include/linux/firmware/xlnx-zynqmp.h | 4 ++--
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
index 2fc6e17..60a5675 100644
--- a/drivers/firmware/xilinx/zynqmp.c
+++ b/drivers/firmware/xilinx/zynqmp.c
@@ -444,13 +444,14 @@ EXPORT_SYMBOL_GPL(zynqmp_pm_clock_getdivider);
  *
  * Return: Returns status, either success or error+reason
  */
-static int zynqmp_pm_clock_setrate(u32 clock_id, u64 rate)
+int zynqmp_pm_clock_setrate(u32 clock_id, u64 rate)
 {
 	return zynqmp_pm_invoke_fn(PM_CLOCK_SETRATE, clock_id,
 				   lower_32_bits(rate),
 				   upper_32_bits(rate),
 				   0, NULL);
 }
+EXPORT_SYMBOL_GPL(zynqmp_pm_clock_setrate);
 
 /**
  * zynqmp_pm_clock_getrate() - Get the clock rate for given id
@@ -462,7 +463,7 @@ static int zynqmp_pm_clock_setrate(u32 clock_id, u64 rate)
  *
  * Return: Returns status, either success or error+reason
  */
-static int zynqmp_pm_clock_getrate(u32 clock_id, u64 *rate)
+int zynqmp_pm_clock_getrate(u32 clock_id, u64 *rate)
 {
 	u32 ret_payload[PAYLOAD_ARG_CNT];
 	int ret;
@@ -473,6 +474,7 @@ static int zynqmp_pm_clock_getrate(u32 clock_id, u64 *rate)
 
 	return ret;
 }
+EXPORT_SYMBOL_GPL(zynqmp_pm_clock_getrate);
 
 /**
  * zynqmp_pm_clock_setparent() - Set the clock parent for given id
@@ -716,8 +718,6 @@ static int zynqmp_pm_set_requirement(const u32 node, const u32 capabilities,
 }
 
 static const struct zynqmp_eemi_ops eemi_ops = {
-	.clock_setrate = zynqmp_pm_clock_setrate,
-	.clock_getrate = zynqmp_pm_clock_getrate,
 	.clock_setparent = zynqmp_pm_clock_setparent,
 	.clock_getparent = zynqmp_pm_clock_getparent,
 	.ioctl = zynqmp_pm_ioctl,
diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h
index b55232e..42dbdf3 100644
--- a/include/linux/firmware/xlnx-zynqmp.h
+++ b/include/linux/firmware/xlnx-zynqmp.h
@@ -288,8 +288,6 @@ struct zynqmp_pm_query_data {
 struct zynqmp_eemi_ops {
 	int (*fpga_load)(const u64 address, const u32 size, const u32 flags);
 	int (*fpga_get_status)(u32 *value);
-	int (*clock_setrate)(u32 clock_id, u64 rate);
-	int (*clock_getrate)(u32 clock_id, u64 *rate);
 	int (*clock_setparent)(u32 clock_id, u32 parent_id);
 	int (*clock_getparent)(u32 clock_id, u32 *parent_id);
 	int (*ioctl)(u32 node_id, u32 ioctl_id, u32 arg1, u32 arg2, u32 *out);
@@ -317,6 +315,8 @@ int zynqmp_pm_clock_disable(u32 clock_id);
 int zynqmp_pm_clock_getstate(u32 clock_id, u32 *state);
 int zynqmp_pm_clock_setdivider(u32 clock_id, u32 divider);
 int zynqmp_pm_clock_getdivider(u32 clock_id, u32 *divider);
+int zynqmp_pm_clock_setrate(u32 clock_id, u64 rate);
+int zynqmp_pm_clock_getrate(u32 clock_id, u64 *rate);
 int zynqmp_pm_invoke_fn(u32 pm_api_id, u32 arg0, u32 arg1,
 			u32 arg2, u32 arg3, u32 *ret_payload);
 
-- 
2.7.4


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[PATCH v3 10/24] firmware: xilinx: Remove eemi ops for clock set/get parent

[Jolly Shah]

From: Rajan Vaja <rajan.vaja@xilinx.com>

Use direct function call instead of eemi ops for clock set/get parent.

Signed-off-by: Rajan Vaja <rajan.vaja@xilinx.com>
Signed-off-by: Jolly Shah <jolly.shah@xilinx.com>
---
 drivers/clk/zynqmp/clk-mux-zynqmp.c  | 6 ++----
 drivers/firmware/xilinx/zynqmp.c     | 8 ++++----
 include/linux/firmware/xlnx-zynqmp.h | 4 ++--
 3 files changed, 8 insertions(+), 10 deletions(-)

diff --git a/drivers/clk/zynqmp/clk-mux-zynqmp.c b/drivers/clk/zynqmp/clk-mux-zynqmp.c
index 0af8f74..0619414 100644
--- a/drivers/clk/zynqmp/clk-mux-zynqmp.c
+++ b/drivers/clk/zynqmp/clk-mux-zynqmp.c
@@ -47,9 +47,8 @@ static u8 zynqmp_clk_mux_get_parent(struct clk_hw *hw)
 	u32 clk_id = mux->clk_id;
 	u32 val;
 	int ret;
-	const struct zynqmp_eemi_ops *eemi_ops = zynqmp_pm_get_eemi_ops();
 
-	ret = eemi_ops->clock_getparent(clk_id, &val);
+	ret = zynqmp_pm_clock_getparent(clk_id, &val);
 
 	if (ret)
 		pr_warn_once("%s() getparent failed for clock: %s, ret = %d\n",
@@ -71,9 +70,8 @@ static int zynqmp_clk_mux_set_parent(struct clk_hw *hw, u8 index)
 	const char *clk_name = clk_hw_get_name(hw);
 	u32 clk_id = mux->clk_id;
 	int ret;
-	const struct zynqmp_eemi_ops *eemi_ops = zynqmp_pm_get_eemi_ops();
 
-	ret = eemi_ops->clock_setparent(clk_id, index);
+	ret = zynqmp_pm_clock_setparent(clk_id, index);
 
 	if (ret)
 		pr_warn_once("%s() set parent failed for clock: %s, ret = %d\n",
diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
index 60a5675..563c77e 100644
--- a/drivers/firmware/xilinx/zynqmp.c
+++ b/drivers/firmware/xilinx/zynqmp.c
@@ -485,11 +485,12 @@ EXPORT_SYMBOL_GPL(zynqmp_pm_clock_getrate);
  *
  * Return: Returns status, either success or error+reason
  */
-static int zynqmp_pm_clock_setparent(u32 clock_id, u32 parent_id)
+int zynqmp_pm_clock_setparent(u32 clock_id, u32 parent_id)
 {
 	return zynqmp_pm_invoke_fn(PM_CLOCK_SETPARENT, clock_id,
 				   parent_id, 0, 0, NULL);
 }
+EXPORT_SYMBOL_GPL(zynqmp_pm_clock_setparent);
 
 /**
  * zynqmp_pm_clock_getparent() - Get the clock parent for given id
@@ -501,7 +502,7 @@ static int zynqmp_pm_clock_setparent(u32 clock_id, u32 parent_id)
  *
  * Return: Returns status, either success or error+reason
  */
-static int zynqmp_pm_clock_getparent(u32 clock_id, u32 *parent_id)
+int zynqmp_pm_clock_getparent(u32 clock_id, u32 *parent_id)
 {
 	u32 ret_payload[PAYLOAD_ARG_CNT];
 	int ret;
@@ -512,6 +513,7 @@ static int zynqmp_pm_clock_getparent(u32 clock_id, u32 *parent_id)
 
 	return ret;
 }
+EXPORT_SYMBOL_GPL(zynqmp_pm_clock_getparent);
 
 /**
  * zynqmp_is_valid_ioctl() - Check whether IOCTL ID is valid or not
@@ -718,8 +720,6 @@ static int zynqmp_pm_set_requirement(const u32 node, const u32 capabilities,
 }
 
 static const struct zynqmp_eemi_ops eemi_ops = {
-	.clock_setparent = zynqmp_pm_clock_setparent,
-	.clock_getparent = zynqmp_pm_clock_getparent,
 	.ioctl = zynqmp_pm_ioctl,
 	.reset_assert = zynqmp_pm_reset_assert,
 	.reset_get_status = zynqmp_pm_reset_get_status,
diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h
index 42dbdf3..f94cfa8 100644
--- a/include/linux/firmware/xlnx-zynqmp.h
+++ b/include/linux/firmware/xlnx-zynqmp.h
@@ -288,8 +288,6 @@ struct zynqmp_pm_query_data {
 struct zynqmp_eemi_ops {
 	int (*fpga_load)(const u64 address, const u32 size, const u32 flags);
 	int (*fpga_get_status)(u32 *value);
-	int (*clock_setparent)(u32 clock_id, u32 parent_id);
-	int (*clock_getparent)(u32 clock_id, u32 *parent_id);
 	int (*ioctl)(u32 node_id, u32 ioctl_id, u32 arg1, u32 arg2, u32 *out);
 	int (*reset_assert)(const enum zynqmp_pm_reset reset,
 			    const enum zynqmp_pm_reset_action assert_flag);
@@ -317,6 +315,8 @@ int zynqmp_pm_clock_setdivider(u32 clock_id, u32 divider);
 int zynqmp_pm_clock_getdivider(u32 clock_id, u32 *divider);
 int zynqmp_pm_clock_setrate(u32 clock_id, u64 rate);
 int zynqmp_pm_clock_getrate(u32 clock_id, u64 *rate);
+int zynqmp_pm_clock_setparent(u32 clock_id, u32 parent_id);
+int zynqmp_pm_clock_getparent(u32 clock_id, u32 *parent_id);
 int zynqmp_pm_invoke_fn(u32 pm_api_id, u32 arg0, u32 arg1,
 			u32 arg2, u32 arg3, u32 *ret_payload);
 
-- 
2.7.4


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[PATCH v3 11/24] firmware: xilinx: Use APIs instead of IOCTLs

[Jolly Shah]

From: Rajan Vaja <rajan.vaja@xilinx.com>

Remove IOCTL API and use individual APIs for better readability.

Signed-off-by: Rajan Vaja <rajan.vaja@xilinx.com>
Signed-off-by: Jolly Shah <jolly.shah@xilinx.com>
---
 drivers/clk/zynqmp/pll.c             | 14 ++---
 drivers/firmware/xilinx/zynqmp.c     | 99 ++++++++++++++++++++++++++----------
 drivers/mmc/host/sdhci-of-arasan.c   | 33 +-----------
 include/linux/firmware/xlnx-zynqmp.h |  6 ++-
 4 files changed, 83 insertions(+), 69 deletions(-)

diff --git a/drivers/clk/zynqmp/pll.c b/drivers/clk/zynqmp/pll.c
index 73fb5bb..92f449e 100644
--- a/drivers/clk/zynqmp/pll.c
+++ b/drivers/clk/zynqmp/pll.c
@@ -50,10 +50,8 @@ static inline enum pll_mode zynqmp_pll_get_mode(struct clk_hw *hw)
 	const char *clk_name = clk_hw_get_name(hw);
 	u32 ret_payload[PAYLOAD_ARG_CNT];
 	int ret;
-	const struct zynqmp_eemi_ops *eemi_ops = zynqmp_pm_get_eemi_ops();
 
-	ret = eemi_ops->ioctl(0, IOCTL_GET_PLL_FRAC_MODE, clk_id, 0,
-			      ret_payload);
+	ret = zynqmp_pm_get_pll_frac_mode(clk_id, ret_payload);
 	if (ret)
 		pr_warn_once("%s() PLL get frac mode failed for %s, ret = %d\n",
 			     __func__, clk_name, ret);
@@ -73,14 +71,13 @@ static inline void zynqmp_pll_set_mode(struct clk_hw *hw, bool on)
 	const char *clk_name = clk_hw_get_name(hw);
 	int ret;
 	u32 mode;
-	const struct zynqmp_eemi_ops *eemi_ops = zynqmp_pm_get_eemi_ops();
 
 	if (on)
 		mode = PLL_MODE_FRAC;
 	else
 		mode = PLL_MODE_INT;
 
-	ret = eemi_ops->ioctl(0, IOCTL_SET_PLL_FRAC_MODE, clk_id, mode, NULL);
+	ret = zynqmp_pm_set_pll_frac_mode(clk_id, mode);
 	if (ret)
 		pr_warn_once("%s() PLL set frac mode failed for %s, ret = %d\n",
 			     __func__, clk_name, ret);
@@ -139,7 +136,6 @@ static unsigned long zynqmp_pll_recalc_rate(struct clk_hw *hw,
 	unsigned long rate, frac;
 	u32 ret_payload[PAYLOAD_ARG_CNT];
 	int ret;
-	const struct zynqmp_eemi_ops *eemi_ops = zynqmp_pm_get_eemi_ops();
 
 	ret = zynqmp_pm_clock_getdivider(clk_id, &fbdiv);
 	if (ret)
@@ -148,8 +144,7 @@ static unsigned long zynqmp_pll_recalc_rate(struct clk_hw *hw,
 
 	rate =  parent_rate * fbdiv;
 	if (zynqmp_pll_get_mode(hw) == PLL_MODE_FRAC) {
-		eemi_ops->ioctl(0, IOCTL_GET_PLL_FRAC_DATA, clk_id, 0,
-				ret_payload);
+		zynqmp_pm_get_pll_frac_data(clk_id, ret_payload);
 		data = ret_payload[1];
 		frac = (parent_rate * data) / FRAC_DIV;
 		rate = rate + frac;
@@ -177,7 +172,6 @@ static int zynqmp_pll_set_rate(struct clk_hw *hw, unsigned long rate,
 	u32 fbdiv;
 	long rate_div, frac, m, f;
 	int ret;
-	const struct zynqmp_eemi_ops *eemi_ops = zynqmp_pm_get_eemi_ops();
 
 	if (zynqmp_pll_get_mode(hw) == PLL_MODE_FRAC) {
 		rate_div = (rate * FRAC_DIV) / parent_rate;
@@ -194,7 +188,7 @@ static int zynqmp_pll_set_rate(struct clk_hw *hw, unsigned long rate,
 		else if (ret)
 			pr_warn_once("%s() set divider failed for %s, ret = %d\n",
 				     __func__, clk_name, ret);
-		eemi_ops->ioctl(0, IOCTL_SET_PLL_FRAC_DATA, clk_id, f, NULL);
+		zynqmp_pm_set_pll_frac_data(clk_id, f);
 
 		return rate + frac;
 	}
diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
index 563c77e..3f0ee1a 100644
--- a/drivers/firmware/xilinx/zynqmp.c
+++ b/drivers/firmware/xilinx/zynqmp.c
@@ -516,45 +516,91 @@ int zynqmp_pm_clock_getparent(u32 clock_id, u32 *parent_id)
 EXPORT_SYMBOL_GPL(zynqmp_pm_clock_getparent);
 
 /**
- * zynqmp_is_valid_ioctl() - Check whether IOCTL ID is valid or not
- * @ioctl_id:	IOCTL ID
+ * zynqmp_pm_set_pll_frac_mode() - PM API for set PLL mode
  *
- * Return: 1 if IOCTL is valid else 0
+ * @clk_id:	PLL clock ID
+ * @mode:	PLL mode (PLL_MODE_FRAC/PLL_MODE_INT)
+ *
+ * This function sets PLL mode
+ *
+ * Return: Returns status, either success or error+reason
  */
-static inline int zynqmp_is_valid_ioctl(u32 ioctl_id)
+int zynqmp_pm_set_pll_frac_mode(u32 clk_id, u32 mode)
 {
-	switch (ioctl_id) {
-	case IOCTL_SET_PLL_FRAC_MODE:
-	case IOCTL_GET_PLL_FRAC_MODE:
-	case IOCTL_SET_PLL_FRAC_DATA:
-	case IOCTL_GET_PLL_FRAC_DATA:
-		return 1;
-	default:
-		return 0;
-	}
+	return zynqmp_pm_invoke_fn(PM_IOCTL, 0, IOCTL_SET_PLL_FRAC_MODE,
+				   clk_id, mode, NULL);
 }
+EXPORT_SYMBOL_GPL(zynqmp_pm_set_pll_frac_mode);
 
 /**
- * zynqmp_pm_ioctl() - PM IOCTL API for device control and configs
- * @node_id:	Node ID of the device
- * @ioctl_id:	ID of the requested IOCTL
- * @arg1:	Argument 1 to requested IOCTL call
- * @arg2:	Argument 2 to requested IOCTL call
- * @out:	Returned output value
+ * zynqmp_pm_get_pll_frac_mode() - PM API for get PLL mode
  *
- * This function calls IOCTL to firmware for device control and configuration.
+ * @clk_id:	PLL clock ID
+ * @mode:	PLL mode
+ *
+ * This function return current PLL mode
  *
  * Return: Returns status, either success or error+reason
  */
-static int zynqmp_pm_ioctl(u32 node_id, u32 ioctl_id, u32 arg1, u32 arg2,
-			   u32 *out)
+int zynqmp_pm_get_pll_frac_mode(u32 clk_id, u32 *mode)
 {
-	if (!zynqmp_is_valid_ioctl(ioctl_id))
-		return -EINVAL;
+	return zynqmp_pm_invoke_fn(PM_IOCTL, 0, IOCTL_GET_PLL_FRAC_MODE,
+				   clk_id, 0, mode);
+}
+EXPORT_SYMBOL_GPL(zynqmp_pm_get_pll_frac_mode);
+
+/**
+ * zynqmp_pm_set_pll_frac_data() - PM API for setting pll fraction data
+ *
+ * @clk_id:	PLL clock ID
+ * @data:	fraction data
+ *
+ * This function sets fraction data.
+ * It is valid for fraction mode only.
+ *
+ * Return: Returns status, either success or error+reason
+ */
+int zynqmp_pm_set_pll_frac_data(u32 clk_id, u32 data)
+{
+	return zynqmp_pm_invoke_fn(PM_IOCTL, 0, IOCTL_SET_PLL_FRAC_DATA,
+				   clk_id, data, NULL);
+}
+EXPORT_SYMBOL_GPL(zynqmp_pm_set_pll_frac_data);
 
-	return zynqmp_pm_invoke_fn(PM_IOCTL, node_id, ioctl_id,
-				   arg1, arg2, out);
+/**
+ * zynqmp_pm_get_pll_frac_data() - PM API for getting pll fraction data
+ *
+ * @clk_id:	PLL clock ID
+ * @data:	fraction data
+ *
+ * This function returns fraction data value.
+ *
+ * Return: Returns status, either success or error+reason
+ */
+int zynqmp_pm_get_pll_frac_data(u32 clk_id, u32 *data)
+{
+	return zynqmp_pm_invoke_fn(PM_IOCTL, 0, IOCTL_GET_PLL_FRAC_DATA,
+				   clk_id, 0, data);
+}
+EXPORT_SYMBOL_GPL(zynqmp_pm_get_pll_frac_data);
+
+/**
+ * zynqmp_pm_set_sd_tapdelay() -  Set tap delay for the SD device
+ *
+ * @node_id	Node ID of the device
+ * @type	Type of tap delay to set (input/output)
+ * @value	Value to set fot the tap delay
+ *
+ * This function sets input/output tap delay for the SD device.
+ *
+ * @return	Returns status, either success or error+reason
+ */
+int zynqmp_pm_set_sd_tapdelay(u32 node_id, u32 type, u32 value)
+{
+	return zynqmp_pm_invoke_fn(PM_IOCTL, node_id, IOCTL_SET_SD_TAPDELAY,
+				   type, value, NULL);
 }
+EXPORT_SYMBOL_GPL(zynqmp_pm_set_sd_tapdelay);
 
 /**
  * zynqmp_pm_reset_assert - Request setting of reset (1 - assert, 0 - release)
@@ -720,7 +766,6 @@ static int zynqmp_pm_set_requirement(const u32 node, const u32 capabilities,
 }
 
 static const struct zynqmp_eemi_ops eemi_ops = {
-	.ioctl = zynqmp_pm_ioctl,
 	.reset_assert = zynqmp_pm_reset_assert,
 	.reset_get_status = zynqmp_pm_reset_get_status,
 	.init_finalize = zynqmp_pm_init_finalize,
diff --git a/drivers/mmc/host/sdhci-of-arasan.c b/drivers/mmc/host/sdhci-of-arasan.c
index e49b44b..bc31f64 100644
--- a/drivers/mmc/host/sdhci-of-arasan.c
+++ b/drivers/mmc/host/sdhci-of-arasan.c
@@ -98,10 +98,6 @@ struct sdhci_arasan_clk_data {
 	void		*clk_of_data;
 };
 
-struct sdhci_arasan_zynqmp_clk_data {
-	const struct zynqmp_eemi_ops *eemi_ops;
-};
-
 /**
  * struct sdhci_arasan_data
  * @host:		Pointer to the main SDHCI host structure.
@@ -630,9 +626,6 @@ static int sdhci_zynqmp_sdcardclk_set_phase(struct clk_hw *hw, int degrees)
 	struct sdhci_arasan_data *sdhci_arasan =
 		container_of(clk_data, struct sdhci_arasan_data, clk_data);
 	struct sdhci_host *host = sdhci_arasan->host;
-	struct sdhci_arasan_zynqmp_clk_data *zynqmp_clk_data =
-		clk_data->clk_of_data;
-	const struct zynqmp_eemi_ops *eemi_ops = zynqmp_clk_data->eemi_ops;
 	const char *clk_name = clk_hw_get_name(hw);
 	u32 node_id = !strcmp(clk_name, "clk_out_sd0") ? NODE_SD_0 : NODE_SD_1;
 	u8 tap_delay, tap_max = 0;
@@ -672,8 +665,7 @@ static int sdhci_zynqmp_sdcardclk_set_phase(struct clk_hw *hw, int degrees)
 	tap_delay = (degrees * tap_max) / 360;
 
 	/* Set the Clock Phase */
-	ret = eemi_ops->ioctl(node_id, IOCTL_SET_SD_TAPDELAY,
-			      PM_TAPDELAY_OUTPUT, tap_delay, NULL);
+	ret = zynqmp_pm_set_sd_tapdelay(node_id, PM_TAPDELAY_OUTPUT, tap_delay);
 	if (ret)
 		pr_err("Error setting Output Tap Delay\n");
 
@@ -702,9 +694,6 @@ static int sdhci_zynqmp_sampleclk_set_phase(struct clk_hw *hw, int degrees)
 	struct sdhci_arasan_data *sdhci_arasan =
 		container_of(clk_data, struct sdhci_arasan_data, clk_data);
 	struct sdhci_host *host = sdhci_arasan->host;
-	struct sdhci_arasan_zynqmp_clk_data *zynqmp_clk_data =
-		clk_data->clk_of_data;
-	const struct zynqmp_eemi_ops *eemi_ops = zynqmp_clk_data->eemi_ops;
 	const char *clk_name = clk_hw_get_name(hw);
 	u32 node_id = !strcmp(clk_name, "clk_in_sd0") ? NODE_SD_0 : NODE_SD_1;
 	u8 tap_delay, tap_max = 0;
@@ -744,8 +733,7 @@ static int sdhci_zynqmp_sampleclk_set_phase(struct clk_hw *hw, int degrees)
 	tap_delay = (degrees * tap_max) / 360;
 
 	/* Set the Clock Phase */
-	ret = eemi_ops->ioctl(node_id, IOCTL_SET_SD_TAPDELAY,
-			      PM_TAPDELAY_INPUT, tap_delay, NULL);
+	ret = zynqmp_pm_set_sd_tapdelay(node_id, PM_TAPDELAY_INPUT, tap_delay);
 	if (ret)
 		pr_err("Error setting Input Tap Delay\n");
 
@@ -1232,23 +1220,6 @@ static int sdhci_arasan_probe(struct platform_device *pdev)
 	if (ret)
 		goto clk_disable_all;
 
-	if (of_device_is_compatible(np, "xlnx,zynqmp-8.9a")) {
-		struct sdhci_arasan_zynqmp_clk_data *zynqmp_clk_data;
-		const struct zynqmp_eemi_ops *eemi_ops;
-
-		zynqmp_clk_data = devm_kzalloc(&pdev->dev,
-					       sizeof(*zynqmp_clk_data),
-					       GFP_KERNEL);
-		eemi_ops = zynqmp_pm_get_eemi_ops();
-		if (IS_ERR(eemi_ops)) {
-			ret = PTR_ERR(eemi_ops);
-			goto unreg_clk;
-		}
-
-		zynqmp_clk_data->eemi_ops = eemi_ops;
-		sdhci_arasan->clk_data.clk_of_data = zynqmp_clk_data;
-	}
-
 	arasan_dt_parse_clk_phases(&pdev->dev, &sdhci_arasan->clk_data);
 
 	ret = mmc_of_parse(host->mmc);
diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h
index f94cfa8..0fde06f 100644
--- a/include/linux/firmware/xlnx-zynqmp.h
+++ b/include/linux/firmware/xlnx-zynqmp.h
@@ -288,7 +288,6 @@ struct zynqmp_pm_query_data {
 struct zynqmp_eemi_ops {
 	int (*fpga_load)(const u64 address, const u32 size, const u32 flags);
 	int (*fpga_get_status)(u32 *value);
-	int (*ioctl)(u32 node_id, u32 ioctl_id, u32 arg1, u32 arg2, u32 *out);
 	int (*reset_assert)(const enum zynqmp_pm_reset reset,
 			    const enum zynqmp_pm_reset_action assert_flag);
 	int (*reset_get_status)(const enum zynqmp_pm_reset reset, u32 *status);
@@ -317,6 +316,11 @@ int zynqmp_pm_clock_setrate(u32 clock_id, u64 rate);
 int zynqmp_pm_clock_getrate(u32 clock_id, u64 *rate);
 int zynqmp_pm_clock_setparent(u32 clock_id, u32 parent_id);
 int zynqmp_pm_clock_getparent(u32 clock_id, u32 *parent_id);
+int zynqmp_pm_set_pll_frac_mode(u32 clk_id, u32 mode);
+int zynqmp_pm_get_pll_frac_mode(u32 clk_id, u32 *mode);
+int zynqmp_pm_set_pll_frac_data(u32 clk_id, u32 data);
+int zynqmp_pm_get_pll_frac_data(u32 clk_id, u32 *data);
+int zynqmp_pm_set_sd_tapdelay(u32 node_id, u32 type, u32 value);
 int zynqmp_pm_invoke_fn(u32 pm_api_id, u32 arg0, u32 arg1,
 			u32 arg2, u32 arg3, u32 *ret_payload);
 
-- 
2.7.4


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[PATCH v3 12/24] firmware: xilinx: Remove eemi ops for reset_assert

[Jolly Shah]

From: Rajan Vaja <rajan.vaja@xilinx.com>

Use direct function call instead of using eemi ops for
reset_assert.

Signed-off-by: Rajan Vaja <rajan.vaja@xilinx.com>
Signed-off-by: Jolly Shah <jolly.shah@xilinx.com>
---
 drivers/firmware/xilinx/zynqmp.c     |  6 +++---
 drivers/reset/reset-zynqmp.c         | 18 ++++++------------
 include/linux/firmware/xlnx-zynqmp.h |  4 ++--
 3 files changed, 11 insertions(+), 17 deletions(-)

diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
index 3f0ee1a..1fa52e6 100644
--- a/drivers/firmware/xilinx/zynqmp.c
+++ b/drivers/firmware/xilinx/zynqmp.c
@@ -610,12 +610,13 @@ EXPORT_SYMBOL_GPL(zynqmp_pm_set_sd_tapdelay);
  *
  * Return: Returns status, either success or error+reason
  */
-static int zynqmp_pm_reset_assert(const enum zynqmp_pm_reset reset,
-				  const enum zynqmp_pm_reset_action assert_flag)
+int zynqmp_pm_reset_assert(const enum zynqmp_pm_reset reset,
+			   const enum zynqmp_pm_reset_action assert_flag)
 {
 	return zynqmp_pm_invoke_fn(PM_RESET_ASSERT, reset, assert_flag,
 				   0, 0, NULL);
 }
+EXPORT_SYMBOL_GPL(zynqmp_pm_reset_assert);
 
 /**
  * zynqmp_pm_reset_get_status - Get status of the reset
@@ -766,7 +767,6 @@ static int zynqmp_pm_set_requirement(const u32 node, const u32 capabilities,
 }
 
 static const struct zynqmp_eemi_ops eemi_ops = {
-	.reset_assert = zynqmp_pm_reset_assert,
 	.reset_get_status = zynqmp_pm_reset_get_status,
 	.init_finalize = zynqmp_pm_init_finalize,
 	.set_suspend_mode = zynqmp_pm_set_suspend_mode,
diff --git a/drivers/reset/reset-zynqmp.c b/drivers/reset/reset-zynqmp.c
index 0144075..4a01b7e 100644
--- a/drivers/reset/reset-zynqmp.c
+++ b/drivers/reset/reset-zynqmp.c
@@ -27,19 +27,15 @@ to_zynqmp_reset_data(struct reset_controller_dev *rcdev)
 static int zynqmp_reset_assert(struct reset_controller_dev *rcdev,
 			       unsigned long id)
 {
-	struct zynqmp_reset_data *priv = to_zynqmp_reset_data(rcdev);
-
-	return priv->eemi_ops->reset_assert(ZYNQMP_RESET_ID + id,
-					    PM_RESET_ACTION_ASSERT);
+	return zynqmp_pm_reset_assert(ZYNQMP_RESET_ID + id,
+				      PM_RESET_ACTION_ASSERT);
 }
 
 static int zynqmp_reset_deassert(struct reset_controller_dev *rcdev,
 				 unsigned long id)
 {
-	struct zynqmp_reset_data *priv = to_zynqmp_reset_data(rcdev);
-
-	return priv->eemi_ops->reset_assert(ZYNQMP_RESET_ID + id,
-					    PM_RESET_ACTION_RELEASE);
+	return zynqmp_pm_reset_assert(ZYNQMP_RESET_ID + id,
+				      PM_RESET_ACTION_RELEASE);
 }
 
 static int zynqmp_reset_status(struct reset_controller_dev *rcdev,
@@ -58,10 +54,8 @@ static int zynqmp_reset_status(struct reset_controller_dev *rcdev,
 static int zynqmp_reset_reset(struct reset_controller_dev *rcdev,
 			      unsigned long id)
 {
-	struct zynqmp_reset_data *priv = to_zynqmp_reset_data(rcdev);
-
-	return priv->eemi_ops->reset_assert(ZYNQMP_RESET_ID + id,
-					    PM_RESET_ACTION_PULSE);
+	return zynqmp_pm_reset_assert(ZYNQMP_RESET_ID + id,
+				      PM_RESET_ACTION_PULSE);
 }
 
 static const struct reset_control_ops zynqmp_reset_ops = {
diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h
index 0fde06f..f882895 100644
--- a/include/linux/firmware/xlnx-zynqmp.h
+++ b/include/linux/firmware/xlnx-zynqmp.h
@@ -288,8 +288,6 @@ struct zynqmp_pm_query_data {
 struct zynqmp_eemi_ops {
 	int (*fpga_load)(const u64 address, const u32 size, const u32 flags);
 	int (*fpga_get_status)(u32 *value);
-	int (*reset_assert)(const enum zynqmp_pm_reset reset,
-			    const enum zynqmp_pm_reset_action assert_flag);
 	int (*reset_get_status)(const enum zynqmp_pm_reset reset, u32 *status);
 	int (*init_finalize)(void);
 	int (*set_suspend_mode)(u32 mode);
@@ -321,6 +319,8 @@ int zynqmp_pm_get_pll_frac_mode(u32 clk_id, u32 *mode);
 int zynqmp_pm_set_pll_frac_data(u32 clk_id, u32 data);
 int zynqmp_pm_get_pll_frac_data(u32 clk_id, u32 *data);
 int zynqmp_pm_set_sd_tapdelay(u32 node_id, u32 type, u32 value);
+int zynqmp_pm_reset_assert(const enum zynqmp_pm_reset reset,
+			   const enum zynqmp_pm_reset_action assert_flag);
 int zynqmp_pm_invoke_fn(u32 pm_api_id, u32 arg0, u32 arg1,
 			u32 arg2, u32 arg3, u32 *ret_payload);
 
-- 
2.7.4


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[PATCH v3 13/24] firmware: xilinx: Remove eemi ops for reset_get_status

[Jolly Shah]

From: Rajan Vaja <rajan.vaja@xilinx.com>

Use direct function call instead of using eemi ops for
reset_get_status.

Signed-off-by: Rajan Vaja <rajan.vaja@xilinx.com>
Signed-off-by: Jolly Shah <jolly.shah@xilinx.com>
---
 drivers/firmware/xilinx/zynqmp.c     | 5 ++---
 drivers/reset/reset-zynqmp.c         | 8 +-------
 include/linux/firmware/xlnx-zynqmp.h | 2 +-
 3 files changed, 4 insertions(+), 11 deletions(-)

diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
index 1fa52e6..f5c5d41 100644
--- a/drivers/firmware/xilinx/zynqmp.c
+++ b/drivers/firmware/xilinx/zynqmp.c
@@ -625,8 +625,7 @@ EXPORT_SYMBOL_GPL(zynqmp_pm_reset_assert);
  *
  * Return: Returns status, either success or error+reason
  */
-static int zynqmp_pm_reset_get_status(const enum zynqmp_pm_reset reset,
-				      u32 *status)
+int zynqmp_pm_reset_get_status(const enum zynqmp_pm_reset reset, u32 *status)
 {
 	u32 ret_payload[PAYLOAD_ARG_CNT];
 	int ret;
@@ -640,6 +639,7 @@ static int zynqmp_pm_reset_get_status(const enum zynqmp_pm_reset reset,
 
 	return ret;
 }
+EXPORT_SYMBOL_GPL(zynqmp_pm_reset_get_status);
 
 /**
  * zynqmp_pm_fpga_load - Perform the fpga load
@@ -767,7 +767,6 @@ static int zynqmp_pm_set_requirement(const u32 node, const u32 capabilities,
 }
 
 static const struct zynqmp_eemi_ops eemi_ops = {
-	.reset_get_status = zynqmp_pm_reset_get_status,
 	.init_finalize = zynqmp_pm_init_finalize,
 	.set_suspend_mode = zynqmp_pm_set_suspend_mode,
 	.request_node = zynqmp_pm_request_node,
diff --git a/drivers/reset/reset-zynqmp.c b/drivers/reset/reset-zynqmp.c
index 4a01b7e..373ea8d4 100644
--- a/drivers/reset/reset-zynqmp.c
+++ b/drivers/reset/reset-zynqmp.c
@@ -15,7 +15,6 @@
 
 struct zynqmp_reset_data {
 	struct reset_controller_dev rcdev;
-	const struct zynqmp_eemi_ops *eemi_ops;
 };
 
 static inline struct zynqmp_reset_data *
@@ -41,10 +40,9 @@ static int zynqmp_reset_deassert(struct reset_controller_dev *rcdev,
 static int zynqmp_reset_status(struct reset_controller_dev *rcdev,
 			       unsigned long id)
 {
-	struct zynqmp_reset_data *priv = to_zynqmp_reset_data(rcdev);
 	int val, err;
 
-	err = priv->eemi_ops->reset_get_status(ZYNQMP_RESET_ID + id, &val);
+	err = zynqmp_pm_reset_get_status(ZYNQMP_RESET_ID + id, &val);
 	if (err)
 		return err;
 
@@ -73,10 +71,6 @@ static int zynqmp_reset_probe(struct platform_device *pdev)
 	if (!priv)
 		return -ENOMEM;
 
-	priv->eemi_ops = zynqmp_pm_get_eemi_ops();
-	if (IS_ERR(priv->eemi_ops))
-		return PTR_ERR(priv->eemi_ops);
-
 	platform_set_drvdata(pdev, priv);
 
 	priv->rcdev.ops = &zynqmp_reset_ops;
diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h
index f882895..ce7b545 100644
--- a/include/linux/firmware/xlnx-zynqmp.h
+++ b/include/linux/firmware/xlnx-zynqmp.h
@@ -288,7 +288,6 @@ struct zynqmp_pm_query_data {
 struct zynqmp_eemi_ops {
 	int (*fpga_load)(const u64 address, const u32 size, const u32 flags);
 	int (*fpga_get_status)(u32 *value);
-	int (*reset_get_status)(const enum zynqmp_pm_reset reset, u32 *status);
 	int (*init_finalize)(void);
 	int (*set_suspend_mode)(u32 mode);
 	int (*request_node)(const u32 node,
@@ -321,6 +320,7 @@ int zynqmp_pm_get_pll_frac_data(u32 clk_id, u32 *data);
 int zynqmp_pm_set_sd_tapdelay(u32 node_id, u32 type, u32 value);
 int zynqmp_pm_reset_assert(const enum zynqmp_pm_reset reset,
 			   const enum zynqmp_pm_reset_action assert_flag);
+int zynqmp_pm_reset_get_status(const enum zynqmp_pm_reset reset, u32 *status);
 int zynqmp_pm_invoke_fn(u32 pm_api_id, u32 arg0, u32 arg1,
 			u32 arg2, u32 arg3, u32 *ret_payload);
 
-- 
2.7.4


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[PATCH v3 14/24] firmware: xilinx: Remove eemi ops for init_finalize

[Jolly Shah]

From: Rajan Vaja <rajan.vaja@xilinx.com>

Use direct function call instead of eemi ops for init_finalize.

Signed-off-by: Rajan Vaja <rajan.vaja@xilinx.com>
Signed-off-by: Jolly Shah <jolly.shah@xilinx.com>
---
 drivers/firmware/xilinx/zynqmp.c     | 4 ++--
 drivers/soc/xilinx/zynqmp_power.c    | 9 +--------
 include/linux/firmware/xlnx-zynqmp.h | 2 +-
 3 files changed, 4 insertions(+), 11 deletions(-)

diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
index f5c5d41..61eb11a 100644
--- a/drivers/firmware/xilinx/zynqmp.c
+++ b/drivers/firmware/xilinx/zynqmp.c
@@ -693,10 +693,11 @@ static int zynqmp_pm_fpga_get_status(u32 *value)
  *
  * Return: Returns status, either success or error+reason
  */
-static int zynqmp_pm_init_finalize(void)
+int zynqmp_pm_init_finalize(void)
 {
 	return zynqmp_pm_invoke_fn(PM_PM_INIT_FINALIZE, 0, 0, 0, 0, NULL);
 }
+EXPORT_SYMBOL_GPL(zynqmp_pm_init_finalize);
 
 /**
  * zynqmp_pm_set_suspend_mode()	- Set system suspend mode
@@ -767,7 +768,6 @@ static int zynqmp_pm_set_requirement(const u32 node, const u32 capabilities,
 }
 
 static const struct zynqmp_eemi_ops eemi_ops = {
-	.init_finalize = zynqmp_pm_init_finalize,
 	.set_suspend_mode = zynqmp_pm_set_suspend_mode,
 	.request_node = zynqmp_pm_request_node,
 	.release_node = zynqmp_pm_release_node,
diff --git a/drivers/soc/xilinx/zynqmp_power.c b/drivers/soc/xilinx/zynqmp_power.c
index d327d9e..f4a9371 100644
--- a/drivers/soc/xilinx/zynqmp_power.c
+++ b/drivers/soc/xilinx/zynqmp_power.c
@@ -182,14 +182,7 @@ static int zynqmp_pm_probe(struct platform_device *pdev)
 	u32 pm_api_version;
 	struct mbox_client *client;
 
-	eemi_ops = zynqmp_pm_get_eemi_ops();
-	if (IS_ERR(eemi_ops))
-		return PTR_ERR(eemi_ops);
-
-	if (!eemi_ops->init_finalize)
-		return -ENXIO;
-
-	eemi_ops->init_finalize();
+	zynqmp_pm_init_finalize();
 	zynqmp_pm_get_api_version(&pm_api_version);
 
 	/* Check PM API version number */
diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h
index ce7b545..6c42eff 100644
--- a/include/linux/firmware/xlnx-zynqmp.h
+++ b/include/linux/firmware/xlnx-zynqmp.h
@@ -288,7 +288,6 @@ struct zynqmp_pm_query_data {
 struct zynqmp_eemi_ops {
 	int (*fpga_load)(const u64 address, const u32 size, const u32 flags);
 	int (*fpga_get_status)(u32 *value);
-	int (*init_finalize)(void);
 	int (*set_suspend_mode)(u32 mode);
 	int (*request_node)(const u32 node,
 			    const u32 capabilities,
@@ -321,6 +320,7 @@ int zynqmp_pm_set_sd_tapdelay(u32 node_id, u32 type, u32 value);
 int zynqmp_pm_reset_assert(const enum zynqmp_pm_reset reset,
 			   const enum zynqmp_pm_reset_action assert_flag);
 int zynqmp_pm_reset_get_status(const enum zynqmp_pm_reset reset, u32 *status);
+int zynqmp_pm_init_finalize(void);
 int zynqmp_pm_invoke_fn(u32 pm_api_id, u32 arg0, u32 arg1,
 			u32 arg2, u32 arg3, u32 *ret_payload);
 
-- 
2.7.4


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[PATCH v3 15/24] firmware: xilinx: Remove eemi ops for set_suspend_mode

[Jolly Shah]

From: Rajan Vaja <rajan.vaja@xilinx.com>

Use direct function call instead of eemi ops for set_suspend_mode.

Signed-off-by: Rajan Vaja <rajan.vaja@xilinx.com>
Signed-off-by: Jolly Shah <jolly.shah@xilinx.com>
---
 drivers/firmware/xilinx/zynqmp.c     | 4 ++--
 drivers/soc/xilinx/zynqmp_power.c    | 6 +-----
 include/linux/firmware/xlnx-zynqmp.h | 2 +-
 3 files changed, 4 insertions(+), 8 deletions(-)

diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
index 61eb11a..334d16d 100644
--- a/drivers/firmware/xilinx/zynqmp.c
+++ b/drivers/firmware/xilinx/zynqmp.c
@@ -707,10 +707,11 @@ EXPORT_SYMBOL_GPL(zynqmp_pm_init_finalize);
  *
  * Return: Returns status, either success or error+reason
  */
-static int zynqmp_pm_set_suspend_mode(u32 mode)
+int zynqmp_pm_set_suspend_mode(u32 mode)
 {
 	return zynqmp_pm_invoke_fn(PM_SET_SUSPEND_MODE, mode, 0, 0, 0, NULL);
 }
+EXPORT_SYMBOL_GPL(zynqmp_pm_set_suspend_mode);
 
 /**
  * zynqmp_pm_request_node() - Request a node with specific capabilities
@@ -768,7 +769,6 @@ static int zynqmp_pm_set_requirement(const u32 node, const u32 capabilities,
 }
 
 static const struct zynqmp_eemi_ops eemi_ops = {
-	.set_suspend_mode = zynqmp_pm_set_suspend_mode,
 	.request_node = zynqmp_pm_request_node,
 	.release_node = zynqmp_pm_release_node,
 	.set_requirement = zynqmp_pm_set_requirement,
diff --git a/drivers/soc/xilinx/zynqmp_power.c b/drivers/soc/xilinx/zynqmp_power.c
index f4a9371..31ff49f 100644
--- a/drivers/soc/xilinx/zynqmp_power.c
+++ b/drivers/soc/xilinx/zynqmp_power.c
@@ -30,7 +30,6 @@ struct zynqmp_pm_work_struct {
 
 static struct zynqmp_pm_work_struct *zynqmp_pm_init_suspend_work;
 static struct mbox_chan *rx_chan;
-static const struct zynqmp_eemi_ops *eemi_ops;
 
 enum pm_suspend_mode {
 	PM_SUSPEND_MODE_FIRST = 0,
@@ -155,9 +154,6 @@ static ssize_t suspend_mode_store(struct device *dev,
 {
 	int md, ret = -EINVAL;
 
-	if (!eemi_ops->set_suspend_mode)
-		return ret;
-
 	for (md = PM_SUSPEND_MODE_FIRST; md < ARRAY_SIZE(suspend_modes); md++)
 		if (suspend_modes[md] &&
 		    sysfs_streq(suspend_modes[md], buf)) {
@@ -166,7 +162,7 @@ static ssize_t suspend_mode_store(struct device *dev,
 		}
 
 	if (!ret && md != suspend_mode) {
-		ret = eemi_ops->set_suspend_mode(md);
+		ret = zynqmp_pm_set_suspend_mode(md);
 		if (likely(!ret))
 			suspend_mode = md;
 	}
diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h
index 6c42eff..dc60802 100644
--- a/include/linux/firmware/xlnx-zynqmp.h
+++ b/include/linux/firmware/xlnx-zynqmp.h
@@ -288,7 +288,6 @@ struct zynqmp_pm_query_data {
 struct zynqmp_eemi_ops {
 	int (*fpga_load)(const u64 address, const u32 size, const u32 flags);
 	int (*fpga_get_status)(u32 *value);
-	int (*set_suspend_mode)(u32 mode);
 	int (*request_node)(const u32 node,
 			    const u32 capabilities,
 			    const u32 qos,
@@ -321,6 +320,7 @@ int zynqmp_pm_reset_assert(const enum zynqmp_pm_reset reset,
 			   const enum zynqmp_pm_reset_action assert_flag);
 int zynqmp_pm_reset_get_status(const enum zynqmp_pm_reset reset, u32 *status);
 int zynqmp_pm_init_finalize(void);
+int zynqmp_pm_set_suspend_mode(u32 mode);
 int zynqmp_pm_invoke_fn(u32 pm_api_id, u32 arg0, u32 arg1,
 			u32 arg2, u32 arg3, u32 *ret_payload);
 
-- 
2.7.4


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[PATCH v3 16/24] firmware: xilinx: Remove eemi ops for request_node

[Jolly Shah]

From: Rajan Vaja <rajan.vaja@xilinx.com>

Use direct function call instead of using eemi ops for request_node.

Signed-off-by: Rajan Vaja <rajan.vaja@xilinx.com>
Signed-off-by: Jolly Shah <jolly.shah@xilinx.com>
---
 drivers/firmware/xilinx/zynqmp.c       | 7 +++----
 drivers/soc/xilinx/zynqmp_pm_domains.c | 5 +----
 include/linux/firmware/xlnx-zynqmp.h   | 6 ++----
 3 files changed, 6 insertions(+), 12 deletions(-)

diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
index 334d16d..08c6960 100644
--- a/drivers/firmware/xilinx/zynqmp.c
+++ b/drivers/firmware/xilinx/zynqmp.c
@@ -725,13 +725,13 @@ EXPORT_SYMBOL_GPL(zynqmp_pm_set_suspend_mode);
  *
  * Return: Returns status, either success or error+reason
  */
-static int zynqmp_pm_request_node(const u32 node, const u32 capabilities,
-				  const u32 qos,
-				  const enum zynqmp_pm_request_ack ack)
+int zynqmp_pm_request_node(const u32 node, const u32 capabilities,
+			   const u32 qos, const enum zynqmp_pm_request_ack ack)
 {
 	return zynqmp_pm_invoke_fn(PM_REQUEST_NODE, node, capabilities,
 				   qos, ack, NULL);
 }
+EXPORT_SYMBOL_GPL(zynqmp_pm_request_node);
 
 /**
  * zynqmp_pm_release_node() - Release a node
@@ -769,7 +769,6 @@ static int zynqmp_pm_set_requirement(const u32 node, const u32 capabilities,
 }
 
 static const struct zynqmp_eemi_ops eemi_ops = {
-	.request_node = zynqmp_pm_request_node,
 	.release_node = zynqmp_pm_release_node,
 	.set_requirement = zynqmp_pm_set_requirement,
 	.fpga_load = zynqmp_pm_fpga_load,
diff --git a/drivers/soc/xilinx/zynqmp_pm_domains.c b/drivers/soc/xilinx/zynqmp_pm_domains.c
index 23d90cb..cf4eed0 100644
--- a/drivers/soc/xilinx/zynqmp_pm_domains.c
+++ b/drivers/soc/xilinx/zynqmp_pm_domains.c
@@ -163,16 +163,13 @@ static int zynqmp_gpd_attach_dev(struct generic_pm_domain *domain,
 	int ret;
 	struct zynqmp_pm_domain *pd;
 
-	if (!eemi_ops->request_node)
-		return -ENXIO;
-
 	pd = container_of(domain, struct zynqmp_pm_domain, gpd);
 
 	/* If this is not the first device to attach there is nothing to do */
 	if (domain->device_count)
 		return 0;
 
-	ret = eemi_ops->request_node(pd->node_id, 0, 0,
+	ret = zynqmp_pm_request_node(pd->node_id, 0, 0,
 				     ZYNQMP_PM_REQUEST_ACK_BLOCKING);
 	/* If requesting a node fails print and return the error */
 	if (ret) {
diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h
index dc60802..3e14bd7 100644
--- a/include/linux/firmware/xlnx-zynqmp.h
+++ b/include/linux/firmware/xlnx-zynqmp.h
@@ -288,10 +288,6 @@ struct zynqmp_pm_query_data {
 struct zynqmp_eemi_ops {
 	int (*fpga_load)(const u64 address, const u32 size, const u32 flags);
 	int (*fpga_get_status)(u32 *value);
-	int (*request_node)(const u32 node,
-			    const u32 capabilities,
-			    const u32 qos,
-			    const enum zynqmp_pm_request_ack ack);
 	int (*release_node)(const u32 node);
 	int (*set_requirement)(const u32 node,
 			       const u32 capabilities,
@@ -321,6 +317,8 @@ int zynqmp_pm_reset_assert(const enum zynqmp_pm_reset reset,
 int zynqmp_pm_reset_get_status(const enum zynqmp_pm_reset reset, u32 *status);
 int zynqmp_pm_init_finalize(void);
 int zynqmp_pm_set_suspend_mode(u32 mode);
+int zynqmp_pm_request_node(const u32 node, const u32 capabilities,
+			   const u32 qos, const enum zynqmp_pm_request_ack ack);
 int zynqmp_pm_invoke_fn(u32 pm_api_id, u32 arg0, u32 arg1,
 			u32 arg2, u32 arg3, u32 *ret_payload);
 
-- 
2.7.4


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[PATCH v3 17/24] firmware: xilinx: Remove eemi ops for release_node

[Jolly Shah]

From: Rajan Vaja <rajan.vaja@xilinx.com>

Use direct function call instead of using eemi ops for release_node.

Signed-off-by: Rajan Vaja <rajan.vaja@xilinx.com>
Signed-off-by: Jolly Shah <jolly.shah@xilinx.com>
---
 drivers/firmware/xilinx/zynqmp.c       | 4 ++--
 drivers/soc/xilinx/zynqmp_pm_domains.c | 5 +----
 include/linux/firmware/xlnx-zynqmp.h   | 2 +-
 3 files changed, 4 insertions(+), 7 deletions(-)

diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
index 08c6960..d59a00f 100644
--- a/drivers/firmware/xilinx/zynqmp.c
+++ b/drivers/firmware/xilinx/zynqmp.c
@@ -743,10 +743,11 @@ EXPORT_SYMBOL_GPL(zynqmp_pm_request_node);
  *
  * Return: Returns status, either success or error+reason
  */
-static int zynqmp_pm_release_node(const u32 node)
+int zynqmp_pm_release_node(const u32 node)
 {
 	return zynqmp_pm_invoke_fn(PM_RELEASE_NODE, node, 0, 0, 0, NULL);
 }
+EXPORT_SYMBOL_GPL(zynqmp_pm_release_node);
 
 /**
  * zynqmp_pm_set_requirement() - PM call to set requirement for PM slaves
@@ -769,7 +770,6 @@ static int zynqmp_pm_set_requirement(const u32 node, const u32 capabilities,
 }
 
 static const struct zynqmp_eemi_ops eemi_ops = {
-	.release_node = zynqmp_pm_release_node,
 	.set_requirement = zynqmp_pm_set_requirement,
 	.fpga_load = zynqmp_pm_fpga_load,
 	.fpga_get_status = zynqmp_pm_fpga_get_status,
diff --git a/drivers/soc/xilinx/zynqmp_pm_domains.c b/drivers/soc/xilinx/zynqmp_pm_domains.c
index cf4eed0..20bee26 100644
--- a/drivers/soc/xilinx/zynqmp_pm_domains.c
+++ b/drivers/soc/xilinx/zynqmp_pm_domains.c
@@ -196,16 +196,13 @@ static void zynqmp_gpd_detach_dev(struct generic_pm_domain *domain,
 	int ret;
 	struct zynqmp_pm_domain *pd;
 
-	if (!eemi_ops->release_node)
-		return;
-
 	pd = container_of(domain, struct zynqmp_pm_domain, gpd);
 
 	/* If this is not the last device to detach there is nothing to do */
 	if (domain->device_count)
 		return;
 
-	ret = eemi_ops->release_node(pd->node_id);
+	ret = zynqmp_pm_release_node(pd->node_id);
 	/* If releasing a node fails print the error and return */
 	if (ret) {
 		pr_err("%s() %s release failed for node %d: %d\n",
diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h
index 3e14bd7..e51332e 100644
--- a/include/linux/firmware/xlnx-zynqmp.h
+++ b/include/linux/firmware/xlnx-zynqmp.h
@@ -288,7 +288,6 @@ struct zynqmp_pm_query_data {
 struct zynqmp_eemi_ops {
 	int (*fpga_load)(const u64 address, const u32 size, const u32 flags);
 	int (*fpga_get_status)(u32 *value);
-	int (*release_node)(const u32 node);
 	int (*set_requirement)(const u32 node,
 			       const u32 capabilities,
 			       const u32 qos,
@@ -319,6 +318,7 @@ int zynqmp_pm_init_finalize(void);
 int zynqmp_pm_set_suspend_mode(u32 mode);
 int zynqmp_pm_request_node(const u32 node, const u32 capabilities,
 			   const u32 qos, const enum zynqmp_pm_request_ack ack);
+int zynqmp_pm_release_node(const u32 node);
 int zynqmp_pm_invoke_fn(u32 pm_api_id, u32 arg0, u32 arg1,
 			u32 arg2, u32 arg3, u32 *ret_payload);
 
-- 
2.7.4


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[PATCH v3 18/24] firmware: xilinx: Remove eemi ops for set_requirement

[Jolly Shah]

From: Rajan Vaja <rajan.vaja@xilinx.com>

Use direct function call instead of using eemi ops for
set_requirement.

Signed-off-by: Rajan Vaja <rajan.vaja@xilinx.com>
Signed-off-by: Jolly Shah <jolly.shah@xilinx.com>
---
 drivers/firmware/xilinx/zynqmp.c       |  8 ++++----
 drivers/soc/xilinx/zynqmp_pm_domains.c | 16 ++--------------
 include/linux/firmware/xlnx-zynqmp.h   |  7 +++----
 3 files changed, 9 insertions(+), 22 deletions(-)

diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
index d59a00f..7426533 100644
--- a/drivers/firmware/xilinx/zynqmp.c
+++ b/drivers/firmware/xilinx/zynqmp.c
@@ -761,16 +761,16 @@ EXPORT_SYMBOL_GPL(zynqmp_pm_release_node);
  *
  * Return: Returns status, either success or error+reason
  */
-static int zynqmp_pm_set_requirement(const u32 node, const u32 capabilities,
-				     const u32 qos,
-				     const enum zynqmp_pm_request_ack ack)
+int zynqmp_pm_set_requirement(const u32 node, const u32 capabilities,
+			      const u32 qos,
+			      const enum zynqmp_pm_request_ack ack)
 {
 	return zynqmp_pm_invoke_fn(PM_SET_REQUIREMENT, node, capabilities,
 				   qos, ack, NULL);
 }
+EXPORT_SYMBOL_GPL(zynqmp_pm_set_requirement);
 
 static const struct zynqmp_eemi_ops eemi_ops = {
-	.set_requirement = zynqmp_pm_set_requirement,
 	.fpga_load = zynqmp_pm_fpga_load,
 	.fpga_get_status = zynqmp_pm_fpga_get_status,
 };
diff --git a/drivers/soc/xilinx/zynqmp_pm_domains.c b/drivers/soc/xilinx/zynqmp_pm_domains.c
index 20bee26..226d343 100644
--- a/drivers/soc/xilinx/zynqmp_pm_domains.c
+++ b/drivers/soc/xilinx/zynqmp_pm_domains.c
@@ -23,8 +23,6 @@
 /* Flag stating if PM nodes mapped to the PM domain has been requested */
 #define ZYNQMP_PM_DOMAIN_REQUESTED	BIT(0)
 
-static const struct zynqmp_eemi_ops *eemi_ops;
-
 static int min_capability;
 
 /**
@@ -76,11 +74,8 @@ static int zynqmp_gpd_power_on(struct generic_pm_domain *domain)
 	int ret;
 	struct zynqmp_pm_domain *pd;
 
-	if (!eemi_ops->set_requirement)
-		return -ENXIO;
-
 	pd = container_of(domain, struct zynqmp_pm_domain, gpd);
-	ret = eemi_ops->set_requirement(pd->node_id,
+	ret = zynqmp_pm_set_requirement(pd->node_id,
 					ZYNQMP_PM_CAPABILITY_ACCESS,
 					ZYNQMP_PM_MAX_QOS,
 					ZYNQMP_PM_REQUEST_ACK_BLOCKING);
@@ -111,9 +106,6 @@ static int zynqmp_gpd_power_off(struct generic_pm_domain *domain)
 	u32 capabilities = min_capability;
 	bool may_wakeup;
 
-	if (!eemi_ops->set_requirement)
-		return -ENXIO;
-
 	pd = container_of(domain, struct zynqmp_pm_domain, gpd);
 
 	/* If domain is already released there is nothing to be done */
@@ -134,7 +126,7 @@ static int zynqmp_gpd_power_off(struct generic_pm_domain *domain)
 		}
 	}
 
-	ret = eemi_ops->set_requirement(pd->node_id, capabilities, 0,
+	ret = zynqmp_pm_set_requirement(pd->node_id, capabilities, 0,
 					ZYNQMP_PM_REQUEST_ACK_NO);
 	/**
 	 * If powering down of any node inside this domain fails,
@@ -260,10 +252,6 @@ static int zynqmp_gpd_probe(struct platform_device *pdev)
 	struct zynqmp_pm_domain *pd;
 	struct device *dev = &pdev->dev;
 
-	eemi_ops = zynqmp_pm_get_eemi_ops();
-	if (IS_ERR(eemi_ops))
-		return PTR_ERR(eemi_ops);
-
 	pd = devm_kcalloc(dev, ZYNQMP_NUM_DOMAINS, sizeof(*pd), GFP_KERNEL);
 	if (!pd)
 		return -ENOMEM;
diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h
index e51332e..3135d62 100644
--- a/include/linux/firmware/xlnx-zynqmp.h
+++ b/include/linux/firmware/xlnx-zynqmp.h
@@ -288,10 +288,6 @@ struct zynqmp_pm_query_data {
 struct zynqmp_eemi_ops {
 	int (*fpga_load)(const u64 address, const u32 size, const u32 flags);
 	int (*fpga_get_status)(u32 *value);
-	int (*set_requirement)(const u32 node,
-			       const u32 capabilities,
-			       const u32 qos,
-			       const enum zynqmp_pm_request_ack ack);
 };
 
 int zynqmp_pm_get_api_version(u32 *version);
@@ -319,6 +315,9 @@ int zynqmp_pm_set_suspend_mode(u32 mode);
 int zynqmp_pm_request_node(const u32 node, const u32 capabilities,
 			   const u32 qos, const enum zynqmp_pm_request_ack ack);
 int zynqmp_pm_release_node(const u32 node);
+int zynqmp_pm_set_requirement(const u32 node, const u32 capabilities,
+			      const u32 qos,
+			      const enum zynqmp_pm_request_ack ack);
 int zynqmp_pm_invoke_fn(u32 pm_api_id, u32 arg0, u32 arg1,
 			u32 arg2, u32 arg3, u32 *ret_payload);
 
-- 
2.7.4


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[PATCH v3 19/24] firmware: xilinx: Remove eemi ops for fpga related APIs

[Jolly Shah]

From: Rajan Vaja <rajan.vaja@xilinx.com>

Use direct function call instead of using eemi ops for fpga related
APIs. Also remove eemi ops structure.

Signed-off-by: Rajan Vaja <rajan.vaja@xilinx.com>
Signed-off-by: Jolly Shah <jolly.shah@xilinx.com>
---
 drivers/firmware/xilinx/zynqmp.c     | 30 ++----------------------------
 drivers/fpga/zynqmp-fpga.c           | 12 ++----------
 drivers/spi/spi-zynqmp-gqspi.c       |  5 -----
 include/linux/firmware/xlnx-zynqmp.h | 16 ++--------------
 4 files changed, 6 insertions(+), 57 deletions(-)

diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
index 7426533..36d5a3e 100644
--- a/drivers/firmware/xilinx/zynqmp.c
+++ b/drivers/firmware/xilinx/zynqmp.c
@@ -24,8 +24,6 @@
 #include <linux/firmware/xlnx-zynqmp.h>
 #include "zynqmp-debug.h"
 
-static const struct zynqmp_eemi_ops *eemi_ops_tbl;
-
 static bool feature_check_enabled;
 static u32 zynqmp_pm_features[PM_API_MAX];
 
@@ -654,8 +652,7 @@ EXPORT_SYMBOL_GPL(zynqmp_pm_reset_get_status);
  *
  * Return: Returns status, either success or error+reason
  */
-static int zynqmp_pm_fpga_load(const u64 address, const u32 size,
-			       const u32 flags)
+int zynqmp_pm_fpga_load(const u64 address, const u32 size, const u32 flags)
 {
 	return zynqmp_pm_invoke_fn(PM_FPGA_LOAD, lower_32_bits(address),
 				   upper_32_bits(address), size, flags, NULL);
@@ -670,7 +667,7 @@ static int zynqmp_pm_fpga_load(const u64 address, const u32 size,
  *
  * Return: Returns status, either success or error+reason
  */
-static int zynqmp_pm_fpga_get_status(u32 *value)
+int zynqmp_pm_fpga_get_status(u32 *value)
 {
 	u32 ret_payload[PAYLOAD_ARG_CNT];
 	int ret;
@@ -770,26 +767,6 @@ int zynqmp_pm_set_requirement(const u32 node, const u32 capabilities,
 }
 EXPORT_SYMBOL_GPL(zynqmp_pm_set_requirement);
 
-static const struct zynqmp_eemi_ops eemi_ops = {
-	.fpga_load = zynqmp_pm_fpga_load,
-	.fpga_get_status = zynqmp_pm_fpga_get_status,
-};
-
-/**
- * zynqmp_pm_get_eemi_ops - Get eemi ops functions
- *
- * Return: Pointer of eemi_ops structure
- */
-const struct zynqmp_eemi_ops *zynqmp_pm_get_eemi_ops(void)
-{
-	if (eemi_ops_tbl)
-		return eemi_ops_tbl;
-	else
-		return ERR_PTR(-EPROBE_DEFER);
-
-}
-EXPORT_SYMBOL_GPL(zynqmp_pm_get_eemi_ops);
-
 static int zynqmp_firmware_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
@@ -836,9 +813,6 @@ static int zynqmp_firmware_probe(struct platform_device *pdev)
 	pr_info("%s Trustzone version v%d.%d\n", __func__,
 		pm_tz_version >> 16, pm_tz_version & 0xFFFF);
 
-	/* Assign eemi_ops_table */
-	eemi_ops_tbl = &eemi_ops;
-
 	zynqmp_pm_api_debugfs_init();
 
 	ret = mfd_add_devices(&pdev->dev, PLATFORM_DEVID_NONE, firmware_devs,
diff --git a/drivers/fpga/zynqmp-fpga.c b/drivers/fpga/zynqmp-fpga.c
index b8a88d2..5be8685 100644
--- a/drivers/fpga/zynqmp-fpga.c
+++ b/drivers/fpga/zynqmp-fpga.c
@@ -40,16 +40,12 @@ static int zynqmp_fpga_ops_write_init(struct fpga_manager *mgr,
 static int zynqmp_fpga_ops_write(struct fpga_manager *mgr,
 				 const char *buf, size_t size)
 {
-	const struct zynqmp_eemi_ops *eemi_ops = zynqmp_pm_get_eemi_ops();
 	struct zynqmp_fpga_priv *priv;
 	dma_addr_t dma_addr;
 	u32 eemi_flags = 0;
 	char *kbuf;
 	int ret;
 
-	if (IS_ERR_OR_NULL(eemi_ops) || !eemi_ops->fpga_load)
-		return -ENXIO;
-
 	priv = mgr->priv;
 
 	kbuf = dma_alloc_coherent(priv->dev, size, &dma_addr, GFP_KERNEL);
@@ -63,7 +59,7 @@ static int zynqmp_fpga_ops_write(struct fpga_manager *mgr,
 	if (priv->flags & FPGA_MGR_PARTIAL_RECONFIG)
 		eemi_flags |= XILINX_ZYNQMP_PM_FPGA_PARTIAL;
 
-	ret = eemi_ops->fpga_load(dma_addr, size, eemi_flags);
+	ret = zynqmp_pm_fpga_load(dma_addr, size, eemi_flags);
 
 	dma_free_coherent(priv->dev, size, kbuf, dma_addr);
 
@@ -78,13 +74,9 @@ static int zynqmp_fpga_ops_write_complete(struct fpga_manager *mgr,
 
 static enum fpga_mgr_states zynqmp_fpga_ops_state(struct fpga_manager *mgr)
 {
-	const struct zynqmp_eemi_ops *eemi_ops = zynqmp_pm_get_eemi_ops();
 	u32 status;
 
-	if (IS_ERR_OR_NULL(eemi_ops) || !eemi_ops->fpga_get_status)
-		return FPGA_MGR_STATE_UNKNOWN;
-
-	eemi_ops->fpga_get_status(&status);
+	zynqmp_pm_fpga_get_status(&status);
 	if (status & IXR_FPGA_DONE_MASK)
 		return FPGA_MGR_STATE_OPERATING;
 
diff --git a/drivers/spi/spi-zynqmp-gqspi.c b/drivers/spi/spi-zynqmp-gqspi.c
index 7412a30..811c97a 100644
--- a/drivers/spi/spi-zynqmp-gqspi.c
+++ b/drivers/spi/spi-zynqmp-gqspi.c
@@ -135,7 +135,6 @@
 
 #define SPI_AUTOSUSPEND_TIMEOUT		3000
 enum mode_type {GQSPI_MODE_IO, GQSPI_MODE_DMA};
-static const struct zynqmp_eemi_ops *eemi_ops;
 
 /**
  * struct zynqmp_qspi - Defines qspi driver instance
@@ -1015,10 +1014,6 @@ static int zynqmp_qspi_probe(struct platform_device *pdev)
 	struct zynqmp_qspi *xqspi;
 	struct device *dev = &pdev->dev;
 
-	eemi_ops = zynqmp_pm_get_eemi_ops();
-	if (IS_ERR(eemi_ops))
-		return PTR_ERR(eemi_ops);
-
 	master = spi_alloc_master(&pdev->dev, sizeof(*xqspi));
 	if (!master)
 		return -ENOMEM;
diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h
index 3135d62..1734d12 100644
--- a/include/linux/firmware/xlnx-zynqmp.h
+++ b/include/linux/firmware/xlnx-zynqmp.h
@@ -285,11 +285,6 @@ struct zynqmp_pm_query_data {
 	u32 arg3;
 };
 
-struct zynqmp_eemi_ops {
-	int (*fpga_load)(const u64 address, const u32 size, const u32 flags);
-	int (*fpga_get_status)(u32 *value);
-};
-
 int zynqmp_pm_get_api_version(u32 *version);
 int zynqmp_pm_get_chipid(u32 *idcode, u32 *version);
 int zynqmp_pm_query_data(struct zynqmp_pm_query_data qdata, u32 *out);
@@ -318,16 +313,9 @@ int zynqmp_pm_release_node(const u32 node);
 int zynqmp_pm_set_requirement(const u32 node, const u32 capabilities,
 			      const u32 qos,
 			      const enum zynqmp_pm_request_ack ack);
+int zynqmp_pm_fpga_load(const u64 address, const u32 size, const u32 flags);
+int zynqmp_pm_fpga_get_status(u32 *value);
 int zynqmp_pm_invoke_fn(u32 pm_api_id, u32 arg0, u32 arg1,
 			u32 arg2, u32 arg3, u32 *ret_payload);
 
-#if IS_REACHABLE(CONFIG_ARCH_ZYNQMP)
-const struct zynqmp_eemi_ops *zynqmp_pm_get_eemi_ops(void);
-#else
-static inline struct zynqmp_eemi_ops *zynqmp_pm_get_eemi_ops(void)
-{
-	return ERR_PTR(-ENODEV);
-}
-#endif
-
 #endif /* __FIRMWARE_ZYNQMP_H__ */
-- 
2.7.4


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[PATCH v3 20/24] firmware: xilinx: Add APIs to read/write GGS/PGGS registers

[Jolly Shah]

From: Rajan Vaja <rajan.vaja@xilinx.com>

Add APIs to read/write PGGS and GGS registers.

Signed-off-by: Rajan Vaja <rajan.vaja@xilinx.com>
Signed-off-by: Jolly Shah <jolly.shah@xilinx.com>
---
 drivers/firmware/xilinx/zynqmp.c     | 66 ++++++++++++++++++++++++++++++++++++
 include/linux/firmware/xlnx-zynqmp.h |  8 +++++
 2 files changed, 74 insertions(+)

diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
index 36d5a3e..de99613 100644
--- a/drivers/firmware/xilinx/zynqmp.c
+++ b/drivers/firmware/xilinx/zynqmp.c
@@ -601,6 +601,72 @@ int zynqmp_pm_set_sd_tapdelay(u32 node_id, u32 type, u32 value)
 EXPORT_SYMBOL_GPL(zynqmp_pm_set_sd_tapdelay);
 
 /**
+ * zynqmp_pm_write_ggs() - PM API for writing global general storage (ggs)
+ * @index	GGS register index
+ * @value	Register value to be written
+ *
+ * This function writes value to GGS register.
+ *
+ * @return      Returns status, either success or error+reason
+ */
+int zynqmp_pm_write_ggs(u32 index, u32 value)
+{
+	return zynqmp_pm_invoke_fn(PM_IOCTL, 0, IOCTL_WRITE_GGS,
+				   index, value, NULL);
+}
+EXPORT_SYMBOL_GPL(zynqmp_pm_write_ggs);
+
+/**
+ * zynqmp_pm_write_ggs() - PM API for reading global general storage (ggs)
+ * @index	GGS register index
+ * @value	Register value to be written
+ *
+ * This function returns GGS register value.
+ *
+ * @return      Returns status, either success or error+reason
+ */
+int zynqmp_pm_read_ggs(u32 index, u32 *value)
+{
+	return zynqmp_pm_invoke_fn(PM_IOCTL, 0, IOCTL_READ_GGS,
+				   index, 0, value);
+}
+EXPORT_SYMBOL_GPL(zynqmp_pm_read_ggs);
+
+/**
+ * zynqmp_pm_write_pggs() - PM API for writing persistent global general
+ *			     storage (pggs)
+ * @index	PGGS register index
+ * @value	Register value to be written
+ *
+ * This function writes value to PGGS register.
+ *
+ * @return      Returns status, either success or error+reason
+ */
+int zynqmp_pm_write_pggs(u32 index, u32 value)
+{
+	return zynqmp_pm_invoke_fn(PM_IOCTL, 0, IOCTL_WRITE_PGGS, index, value,
+				   NULL);
+}
+EXPORT_SYMBOL_GPL(zynqmp_pm_write_pggs);
+
+/**
+ * zynqmp_pm_write_pggs() - PM API for reading persistent global general
+ *			     storage (pggs)
+ * @index	PGGS register index
+ * @value	Register value to be written
+ *
+ * This function returns PGGS register value.
+ *
+ * @return      Returns status, either success or error+reason
+ */
+int zynqmp_pm_read_pggs(u32 index, u32 *value)
+{
+	return zynqmp_pm_invoke_fn(PM_IOCTL, 0, IOCTL_READ_PGGS, index, 0,
+				   value);
+}
+EXPORT_SYMBOL_GPL(zynqmp_pm_read_pggs);
+
+/**
  * zynqmp_pm_reset_assert - Request setting of reset (1 - assert, 0 - release)
  * @reset:		Reset to be configured
  * @assert_flag:	Flag stating should reset be asserted (1) or
diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h
index 1734d12..725dccf 100644
--- a/include/linux/firmware/xlnx-zynqmp.h
+++ b/include/linux/firmware/xlnx-zynqmp.h
@@ -105,6 +105,10 @@ enum pm_ioctl_id {
 	IOCTL_GET_PLL_FRAC_MODE,
 	IOCTL_SET_PLL_FRAC_DATA,
 	IOCTL_GET_PLL_FRAC_DATA,
+	IOCTL_WRITE_GGS,
+	IOCTL_READ_GGS,
+	IOCTL_WRITE_PGGS,
+	IOCTL_READ_PGGS,
 };
 
 enum pm_query_id {
@@ -315,6 +319,10 @@ int zynqmp_pm_set_requirement(const u32 node, const u32 capabilities,
 			      const enum zynqmp_pm_request_ack ack);
 int zynqmp_pm_fpga_load(const u64 address, const u32 size, const u32 flags);
 int zynqmp_pm_fpga_get_status(u32 *value);
+int zynqmp_pm_write_ggs(u32 index, u32 value);
+int zynqmp_pm_read_ggs(u32 index, u32 *value);
+int zynqmp_pm_write_pggs(u32 index, u32 value);
+int zynqmp_pm_read_pggs(u32 index, u32 *value);
 int zynqmp_pm_invoke_fn(u32 pm_api_id, u32 arg0, u32 arg1,
 			u32 arg2, u32 arg3, u32 *ret_payload);
 
-- 
2.7.4


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Re: [PATCH v3 20/24] firmware: xilinx: Add APIs to read/write GGS/PGGS registers

[Greg KH]

On Fri, Mar 06, 2020 at 03:47:28PM -0800, Jolly Shah wrote:
> --- a/include/linux/firmware/xlnx-zynqmp.h
> +++ b/include/linux/firmware/xlnx-zynqmp.h
> @@ -105,6 +105,10 @@ enum pm_ioctl_id {
>  	IOCTL_GET_PLL_FRAC_MODE,
>  	IOCTL_SET_PLL_FRAC_DATA,
>  	IOCTL_GET_PLL_FRAC_DATA,
> +	IOCTL_WRITE_GGS,
> +	IOCTL_READ_GGS,
> +	IOCTL_WRITE_PGGS,
> +	IOCTL_READ_PGGS,

You do not have explicit numbers here?  Bold :)

greg k-h

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RE: [PATCH v3 20/24] firmware: xilinx: Add APIs to read/write GGS/PGGS registers

[Rajan Vaja]

Hi Greg,

Thanks for applying patches and review.

Please see my comment inline.

> -----Original Message-----
> From: Greg KH <gregkh@linuxfoundation.org>
> Sent: 18 March 2020 05:22 PM
> To: Jolly Shah <JOLLYS@xilinx.com>
> Cc: ard.biesheuvel@linaro.org; mingo@kernel.org; matt@codeblueprint.co.uk;
> sudeep.holla@arm.com; hkallweit1@gmail.com; keescook@chromium.org;
> dmitry.torokhov@gmail.com; Michal Simek <michals@xilinx.com>; Rajan Vaja
> <RAJANV@xilinx.com>; linux-arm-kernel@lists.infradead.org; linux-
> kernel@vger.kernel.org; Rajan Vaja <RAJANV@xilinx.com>
> Subject: Re: [PATCH v3 20/24] firmware: xilinx: Add APIs to read/write GGS/PGGS
> registers
> 
> CAUTION: This message has originated from an External Source. Please use
> proper judgment and caution when opening attachments, clicking links, or
> responding to this email.
> 
> 
> On Fri, Mar 06, 2020 at 03:47:28PM -0800, Jolly Shah wrote:
> > --- a/include/linux/firmware/xlnx-zynqmp.h
> > +++ b/include/linux/firmware/xlnx-zynqmp.h
> > @@ -105,6 +105,10 @@ enum pm_ioctl_id {
> >       IOCTL_GET_PLL_FRAC_MODE,
> >       IOCTL_SET_PLL_FRAC_DATA,
> >       IOCTL_GET_PLL_FRAC_DATA,
> > +     IOCTL_WRITE_GGS,
> > +     IOCTL_READ_GGS,
> > +     IOCTL_WRITE_PGGS,
> > +     IOCTL_READ_PGGS,
> 
> You do not have explicit numbers here?  Bold :)
[Rajan] Here new IOCTL IDs are continuous so didn't mention explicit number.
Are asking for adding numbers like below:
enum pm_ioctl_id {
      ...
      IOCTL_GET_PLL_FRAC_DATA = 11,
      IOCTL_WRITE_GGS = 12,
      ....
}

Thanks,
Rajan
> greg k-h

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Re: [PATCH v3 20/24] firmware: xilinx: Add APIs to read/write GGS/PGGS registers

[Greg KH]

On Wed, Mar 18, 2020 at 12:41:46PM +0000, Rajan Vaja wrote:
> Hi Greg,
> 
> Thanks for applying patches and review.
> 
> Please see my comment inline.
> 
> > -----Original Message-----
> > From: Greg KH <gregkh@linuxfoundation.org>
> > Sent: 18 March 2020 05:22 PM
> > To: Jolly Shah <JOLLYS@xilinx.com>
> > Cc: ard.biesheuvel@linaro.org; mingo@kernel.org; matt@codeblueprint.co.uk;
> > sudeep.holla@arm.com; hkallweit1@gmail.com; keescook@chromium.org;
> > dmitry.torokhov@gmail.com; Michal Simek <michals@xilinx.com>; Rajan Vaja
> > <RAJANV@xilinx.com>; linux-arm-kernel@lists.infradead.org; linux-
> > kernel@vger.kernel.org; Rajan Vaja <RAJANV@xilinx.com>
> > Subject: Re: [PATCH v3 20/24] firmware: xilinx: Add APIs to read/write GGS/PGGS
> > registers
> > 
> > CAUTION: This message has originated from an External Source. Please use
> > proper judgment and caution when opening attachments, clicking links, or
> > responding to this email.
> > 
> > 
> > On Fri, Mar 06, 2020 at 03:47:28PM -0800, Jolly Shah wrote:
> > > --- a/include/linux/firmware/xlnx-zynqmp.h
> > > +++ b/include/linux/firmware/xlnx-zynqmp.h
> > > @@ -105,6 +105,10 @@ enum pm_ioctl_id {
> > >       IOCTL_GET_PLL_FRAC_MODE,
> > >       IOCTL_SET_PLL_FRAC_DATA,
> > >       IOCTL_GET_PLL_FRAC_DATA,
> > > +     IOCTL_WRITE_GGS,
> > > +     IOCTL_READ_GGS,
> > > +     IOCTL_WRITE_PGGS,
> > > +     IOCTL_READ_PGGS,
> > 
> > You do not have explicit numbers here?  Bold :)
> [Rajan] Here new IOCTL IDs are continuous so didn't mention explicit number.

Yes, but is that guaranteed by the compiler?  I keep getting conflicting
advice with that.

> Are asking for adding numbers like below:
> enum pm_ioctl_id {
>       ...
>       IOCTL_GET_PLL_FRAC_DATA = 11,
>       IOCTL_WRITE_GGS = 12,
>       ....
> }

Yes please, especially as your firmware is expecting the explicit values
here, right?  That way you _know_ everything is correct.

thanks,

greg k-h

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[PATCH v3 21/24] firmware: xilinx: Add sysfs interface

[Jolly Shah]

From: Rajan Vaja <rajan.vaja@xilinx.com>

Add firmware-ggs sysfs interface which provides read/write
interface to global storage registers.

Signed-off-by: Rajan Vaja <rajan.vaja@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Jolly Shah <jollys@xilinx.com>
Signed-off-by: Tejas Patel <tejas.patel@xilinx.com>
Signed-off-by: Jolly Shah <jolly.shah@xilinx.com>
---
 .../ABI/stable/sysfs-driver-firmware-zynqmp        |  50 ++++
 drivers/firmware/xilinx/zynqmp.c                   | 319 ++++++++++++++++++++-
 include/linux/firmware/xlnx-zynqmp.h               |   4 +
 3 files changed, 372 insertions(+), 1 deletion(-)
 create mode 100644 Documentation/ABI/stable/sysfs-driver-firmware-zynqmp

diff --git a/Documentation/ABI/stable/sysfs-driver-firmware-zynqmp b/Documentation/ABI/stable/sysfs-driver-firmware-zynqmp
new file mode 100644
index 0000000..7fd6e70
--- /dev/null
+++ b/Documentation/ABI/stable/sysfs-driver-firmware-zynqmp
@@ -0,0 +1,50 @@
+What:		/sys/devices/platform/firmware\:zynqmp-firmware/ggs*
+Date:		March 2020
+KernelVersion:	5.6
+Contact:	"Jolly Shah" <jollys@xilinx.com>
+Description:
+		Read/Write PMU global general storage register value,
+		GLOBAL_GEN_STORAGE{0:3}.
+		Global general storage register that can be used
+		by system to pass information between masters.
+
+		The register is reset during system or power-on
+		resets. Three registers are used by the FSBL and
+		other Xilinx software products: GLOBAL_GEN_STORAGE{4:6}.
+
+		Usage:
+		# cat /sys/devices/platform/firmware\:zynqmp-firmware/ggs0
+		# echo <mask> <value> > /sys/devices/platform/firmware\:zynqmp-firmware/ggs0
+
+		Example:
+		# cat /sys/devices/platform/firmware\:zynqmp-firmware/ggs0
+		# echo 0xFFFFFFFF 0x1234ABCD > /sys/devices/platform/firmware\:zynqmp-firmware/ggs0
+
+Users:		Xilinx
+
+What:		/sys/devices/platform/firmware\:zynqmp-firmware/pggs*
+Date:		March 2020
+KernelVersion:	5.6
+Contact:	"Jolly Shah" <jollys@xilinx.com>
+Description:
+		Read/Write PMU persistent global general storage register
+		value, PERS_GLOB_GEN_STORAGE{0:3}.
+		Persistent global general storage register that
+		can be used by system to pass information between
+		masters.
+
+		This register is only reset by the power-on reset
+		and maintains its value through a system reset.
+		Four registers are used by the FSBL and other Xilinx
+		software products: PERS_GLOB_GEN_STORAGE{4:7}.
+		Register is reset only by a POR reset.
+
+		Usage:
+		# cat /sys/devices/platform/firmware\:zynqmp-firmware/pggs0
+		# echo <mask> <value> > /sys/devices/platform/firmware\:zynqmp-firmware/pggs0
+
+		Example:
+		# cat /sys/devices/platform/firmware\:zynqmp-firmware/pggs0
+		# echo 0xFFFFFFFF 0x1234ABCD > /sys/devices/platform/firmware\:zynqmp-firmware/pggs0
+
+Users:		Xilinx
diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
index de99613..f671b6b 100644
--- a/drivers/firmware/xilinx/zynqmp.c
+++ b/drivers/firmware/xilinx/zynqmp.c
@@ -2,7 +2,7 @@
 /*
  * Xilinx Zynq MPSoC Firmware layer
  *
- *  Copyright (C) 2014-2018 Xilinx, Inc.
+ *  Copyright (C) 2014-2020 Xilinx, Inc.
  *
  *  Michal Simek <michal.simek@xilinx.com>
  *  Davorin Mista <davorin.mista@aggios.com>
@@ -833,6 +833,322 @@ int zynqmp_pm_set_requirement(const u32 node, const u32 capabilities,
 }
 EXPORT_SYMBOL_GPL(zynqmp_pm_set_requirement);
 
+/**
+ * ggs_show - Show global general storage (ggs) sysfs attribute
+ * @device: Device structure
+ * @attr: Device attribute structure
+ * @buf: Requested available shutdown_scope attributes string
+ * @reg: Register number
+ *
+ * Return:Number of bytes printed into the buffer.
+ *
+ * Helper function for viewing a ggs register value.
+ *
+ * User-space interface for viewing the content of the ggs0 register.
+ * cat /sys/devices/platform/firmware\:zynqmp-firmware/ggs0
+ */
+static ssize_t ggs_show(struct device *device,
+			struct device_attribute *attr,
+			char *buf,
+			u32 reg)
+{
+	int ret;
+	u32 ret_payload[PAYLOAD_ARG_CNT];
+
+	ret = zynqmp_pm_read_ggs(reg, ret_payload);
+	if (ret)
+		return ret;
+
+	return sprintf(buf, "0x%x\n", ret_payload[1]);
+}
+
+/**
+ * ggs_store - Store global general storage (ggs) sysfs attribute
+ * @device: Device structure
+ * @attr: Device attribute structure
+ * @buf: User entered shutdown_scope attribute string
+ * @count: Size of buf
+ * @reg: Register number
+ *
+ * Return: count argument if request succeeds, the corresponding
+ * error code otherwise
+ *
+ * Helper function for storing a ggs register value.
+ *
+ * For example, the user-space interface for storing a value to the
+ * ggs0 register:
+ * echo 0xFFFFFFFF 0x1234ABCD > /sys/devices/platform/firmware\:zynqmp-firmware/ggs0
+ */
+static ssize_t ggs_store(struct device *device,
+			 struct device_attribute *attr,
+			 const char *buf, size_t count,
+			 u32 reg)
+{
+	char *kern_buff, *inbuf, *tok;
+	long mask, value;
+	int ret;
+	u32 ret_payload[PAYLOAD_ARG_CNT];
+
+	if (!device || !attr || !buf || !count || reg >= GSS_NUM_REGS)
+		return -EINVAL;
+
+	kern_buff = kzalloc(count, GFP_KERNEL);
+	if (!kern_buff)
+		return -ENOMEM;
+
+	ret = strlcpy(kern_buff, buf, count);
+	if (ret < 0) {
+		count = -EFAULT;
+		goto err;
+	}
+
+	inbuf = kern_buff;
+
+	/* Read the write mask */
+	tok = strsep(&inbuf, " ");
+	if (!tok) {
+		count = -EFAULT;
+		goto err;
+	}
+
+	ret = kstrtol(tok, 16, &mask);
+	if (ret) {
+		count = -EFAULT;
+		goto err;
+	}
+
+	/* Read the write value */
+	tok = strsep(&inbuf, " ");
+	if (!tok) {
+		count = -EFAULT;
+		goto err;
+	}
+
+	ret = kstrtol(tok, 16, &value);
+	if (ret) {
+		count = -EFAULT;
+		goto err;
+	}
+
+	ret = zynqmp_pm_read_ggs(reg, ret_payload);
+	if (ret) {
+		count = -EFAULT;
+		goto err;
+	}
+	ret_payload[1] &= ~mask;
+	value &= mask;
+	value |= ret_payload[1];
+
+	ret = zynqmp_pm_write_ggs(reg, value);
+	if (ret)
+		count = -EFAULT;
+
+err:
+	kfree(kern_buff);
+
+	return count;
+}
+
+/* GGS register show functions */
+#define GGS0_SHOW(N)						\
+	ssize_t ggs##N##_show(struct device *device,		\
+			      struct device_attribute *attr,	\
+			      char *buf)			\
+	{							\
+		return ggs_show(device, attr, buf, N);		\
+	}
+
+static GGS0_SHOW(0);
+static GGS0_SHOW(1);
+static GGS0_SHOW(2);
+static GGS0_SHOW(3);
+
+/* GGS register store function */
+#define GGS0_STORE(N)						\
+	ssize_t ggs##N##_store(struct device *device,		\
+			       struct device_attribute *attr,	\
+			       const char *buf,			\
+			       size_t count)			\
+	{							\
+		return ggs_store(device, attr, buf, count, N);	\
+	}
+
+static GGS0_STORE(0);
+static GGS0_STORE(1);
+static GGS0_STORE(2);
+static GGS0_STORE(3);
+
+/**
+ * pggs_show - Show persistent global general storage (pggs) sysfs attribute
+ * @device: Device structure
+ * @attr: Device attribute structure
+ * @buf: Requested available shutdown_scope attributes string
+ * @reg: Register number
+ *
+ * Return:Number of bytes printed into the buffer.
+ *
+ * Helper function for viewing a pggs register value.
+ */
+static ssize_t pggs_show(struct device *device,
+			 struct device_attribute *attr,
+			 char *buf,
+			 u32 reg)
+{
+	int ret;
+	u32 ret_payload[PAYLOAD_ARG_CNT];
+
+	ret = zynqmp_pm_read_pggs(reg, ret_payload);
+	if (ret)
+		return ret;
+
+	return sprintf(buf, "0x%x\n", ret_payload[1]);
+}
+
+/**
+ * pggs_store - Store persistent global general storage (pggs) sysfs attribute
+ * @device: Device structure
+ * @attr: Device attribute structure
+ * @buf: User entered shutdown_scope attribute string
+ * @count: Size of buf
+ * @reg: Register number
+ *
+ * Return: count argument if request succeeds, the corresponding
+ * error code otherwise
+ *
+ * Helper function for storing a pggs register value.
+ */
+static ssize_t pggs_store(struct device *device,
+			  struct device_attribute *attr,
+			  const char *buf, size_t count,
+			  u32 reg)
+{
+	char *kern_buff, *inbuf, *tok;
+	long mask, value;
+	int ret;
+	u32 ret_payload[PAYLOAD_ARG_CNT];
+
+	if (!device || !attr || !buf || !count || reg >= GSS_NUM_REGS)
+		return -EINVAL;
+
+	kern_buff = kzalloc(count, GFP_KERNEL);
+	if (!kern_buff)
+		return -ENOMEM;
+
+	ret = strlcpy(kern_buff, buf, count);
+	if (ret < 0) {
+		count = -EFAULT;
+		goto err;
+	}
+
+	inbuf = kern_buff;
+
+	/* Read the write mask */
+	tok = strsep(&inbuf, " ");
+	if (!tok) {
+		count = -EFAULT;
+		goto err;
+	}
+
+	ret = kstrtol(tok, 16, &mask);
+	if (ret) {
+		count = -EFAULT;
+		goto err;
+	}
+
+	/* Read the write value */
+	tok = strsep(&inbuf, " ");
+	if (!tok) {
+		count = -EFAULT;
+		goto err;
+	}
+
+	ret = kstrtol(tok, 16, &value);
+	if (ret) {
+		count = -EFAULT;
+		goto err;
+	}
+
+	ret = zynqmp_pm_read_pggs(reg, ret_payload);
+	if (ret) {
+		count = -EFAULT;
+		goto err;
+	}
+	ret_payload[1] &= ~mask;
+	value &= mask;
+	value |= ret_payload[1];
+
+	ret = zynqmp_pm_write_pggs(reg, value);
+	if (ret)
+		count = -EFAULT;
+
+err:
+	kfree(kern_buff);
+
+	return count;
+}
+
+#define PGGS0_SHOW(N)						\
+	ssize_t pggs##N##_show(struct device *device,		\
+			       struct device_attribute *attr,	\
+			       char *buf)			\
+	{							\
+		return pggs_show(device, attr, buf, N);		\
+	}
+
+#define PGGS0_STORE(N)						\
+	ssize_t pggs##N##_store(struct device *device,		\
+				struct device_attribute *attr,	\
+				const char *buf,		\
+				size_t count)			\
+	{							\
+		return pggs_store(device, attr, buf, count, N);	\
+	}
+
+/* PGGS register show functions */
+static PGGS0_SHOW(0);
+static PGGS0_SHOW(1);
+static PGGS0_SHOW(2);
+static PGGS0_SHOW(3);
+
+/* PGGS register store functions */
+static PGGS0_STORE(0);
+static PGGS0_STORE(1);
+static PGGS0_STORE(2);
+static PGGS0_STORE(3);
+
+/* GGS register attributes */
+static DEVICE_ATTR_RW(ggs0);
+static DEVICE_ATTR_RW(ggs1);
+static DEVICE_ATTR_RW(ggs2);
+static DEVICE_ATTR_RW(ggs3);
+
+/* PGGS register attributes */
+static DEVICE_ATTR_RW(pggs0);
+static DEVICE_ATTR_RW(pggs1);
+static DEVICE_ATTR_RW(pggs2);
+static DEVICE_ATTR_RW(pggs3);
+
+static struct attribute *zynqmp_ggs_attrs[] = {
+	&dev_attr_ggs0.attr,
+	&dev_attr_ggs1.attr,
+	&dev_attr_ggs2.attr,
+	&dev_attr_ggs3.attr,
+	&dev_attr_pggs0.attr,
+	&dev_attr_pggs1.attr,
+	&dev_attr_pggs2.attr,
+	&dev_attr_pggs3.attr,
+	NULL,
+};
+
+static const struct attribute_group ggs_attribute_group = {
+	.attrs = zynqmp_ggs_attrs,
+};
+
+const struct attribute_group *firmware_attribute_groups[] = {
+	&ggs_attribute_group,
+	NULL,
+};
+
 static int zynqmp_firmware_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
@@ -910,6 +1226,7 @@ static struct platform_driver zynqmp_firmware_driver = {
 	.driver = {
 		.name = "zynqmp_firmware",
 		.of_match_table = zynqmp_firmware_of_match,
+		.dev_groups = firmware_attribute_groups,
 	},
 	.probe = zynqmp_firmware_probe,
 	.remove = zynqmp_firmware_remove,
diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h
index 725dccf..8ccaa39 100644
--- a/include/linux/firmware/xlnx-zynqmp.h
+++ b/include/linux/firmware/xlnx-zynqmp.h
@@ -13,6 +13,8 @@
 #ifndef __FIRMWARE_ZYNQMP_H__
 #define __FIRMWARE_ZYNQMP_H__
 
+#include <linux/device.h>
+
 #define ZYNQMP_PM_VERSION_MAJOR	1
 #define ZYNQMP_PM_VERSION_MINOR	0
 
@@ -42,6 +44,8 @@
 
 #define ZYNQMP_PM_MAX_QOS		100U
 
+#define GSS_NUM_REGS	(4)
+
 /* Node capabilities */
 #define	ZYNQMP_PM_CAPABILITY_ACCESS	0x1U
 #define	ZYNQMP_PM_CAPABILITY_CONTEXT	0x2U
-- 
2.7.4


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Re: [PATCH v3 21/24] firmware: xilinx: Add sysfs interface

[Greg KH]

On Fri, Mar 06, 2020 at 03:47:29PM -0800, Jolly Shah wrote:
> +/**
> + * ggs_store - Store global general storage (ggs) sysfs attribute
> + * @device: Device structure
> + * @attr: Device attribute structure
> + * @buf: User entered shutdown_scope attribute string
> + * @count: Size of buf
> + * @reg: Register number
> + *
> + * Return: count argument if request succeeds, the corresponding
> + * error code otherwise
> + *
> + * Helper function for storing a ggs register value.
> + *
> + * For example, the user-space interface for storing a value to the
> + * ggs0 register:
> + * echo 0xFFFFFFFF 0x1234ABCD > /sys/devices/platform/firmware\:zynqmp-firmware/ggs0
> + */

Do you really need a whole kernel_doc format for a static function?
Anyway...

> +static ssize_t ggs_store(struct device *device,
> +			 struct device_attribute *attr,
> +			 const char *buf, size_t count,
> +			 u32 reg)
> +{
> +	char *kern_buff, *inbuf, *tok;
> +	long mask, value;
> +	int ret;
> +	u32 ret_payload[PAYLOAD_ARG_CNT];
> +
> +	if (!device || !attr || !buf || !count || reg >= GSS_NUM_REGS)

How can !device, !attr, !buf, or !count ever happen?

Do not check for things that are impossible please.

> +		return -EINVAL;
> +
> +	kern_buff = kzalloc(count, GFP_KERNEL);
> +	if (!kern_buff)
> +		return -ENOMEM;
> +
> +	ret = strlcpy(kern_buff, buf, count);
> +	if (ret < 0) {
> +		count = -EFAULT;
> +		goto err;
> +	}
> +
> +	inbuf = kern_buff;
> +
> +	/* Read the write mask */
> +	tok = strsep(&inbuf, " ");
> +	if (!tok) {
> +		count = -EFAULT;
> +		goto err;
> +	}
> +
> +	ret = kstrtol(tok, 16, &mask);
> +	if (ret) {
> +		count = -EFAULT;
> +		goto err;
> +	}
> +
> +	/* Read the write value */
> +	tok = strsep(&inbuf, " ");
> +	if (!tok) {
> +		count = -EFAULT;
> +		goto err;
> +	}
> +
> +	ret = kstrtol(tok, 16, &value);
> +	if (ret) {
> +		count = -EFAULT;
> +		goto err;
> +	}

sysfs files are "one value per file" which prevents this string parsing
mess.  Please do not do that.

Again, one value per file, not X values.


> +
> +	ret = zynqmp_pm_read_ggs(reg, ret_payload);
> +	if (ret) {
> +		count = -EFAULT;
> +		goto err;
> +	}
> +	ret_payload[1] &= ~mask;
> +	value &= mask;
> +	value |= ret_payload[1];
> +
> +	ret = zynqmp_pm_write_ggs(reg, value);
> +	if (ret)
> +		count = -EFAULT;
> +
> +err:
> +	kfree(kern_buff);
> +
> +	return count;
> +}

> +/**
> + * pggs_store - Store persistent global general storage (pggs) sysfs attribute
> + * @device: Device structure
> + * @attr: Device attribute structure
> + * @buf: User entered shutdown_scope attribute string
> + * @count: Size of buf
> + * @reg: Register number
> + *
> + * Return: count argument if request succeeds, the corresponding
> + * error code otherwise
> + *
> + * Helper function for storing a pggs register value.
> + */
> +static ssize_t pggs_store(struct device *device,
> +			  struct device_attribute *attr,
> +			  const char *buf, size_t count,
> +			  u32 reg)
> +{
> +	char *kern_buff, *inbuf, *tok;
> +	long mask, value;
> +	int ret;
> +	u32 ret_payload[PAYLOAD_ARG_CNT];
> +
> +	if (!device || !attr || !buf || !count || reg >= GSS_NUM_REGS)
> +		return -EINVAL;

Again, clean this up.

> +
> +	kern_buff = kzalloc(count, GFP_KERNEL);
> +	if (!kern_buff)
> +		return -ENOMEM;
> +
> +	ret = strlcpy(kern_buff, buf, count);
> +	if (ret < 0) {
> +		count = -EFAULT;
> +		goto err;
> +	}
> +
> +	inbuf = kern_buff;
> +
> +	/* Read the write mask */
> +	tok = strsep(&inbuf, " ");

No need to parse when there is only one value.

> +	if (!tok) {
> +		count = -EFAULT;
> +		goto err;
> +	}
> +
> +	ret = kstrtol(tok, 16, &mask);
> +	if (ret) {
> +		count = -EFAULT;
> +		goto err;
> +	}
> +
> +	/* Read the write value */
> +	tok = strsep(&inbuf, " ");
> +	if (!tok) {
> +		count = -EFAULT;
> +		goto err;
> +	}
> +
> +	ret = kstrtol(tok, 16, &value);
> +	if (ret) {
> +		count = -EFAULT;
> +		goto err;
> +	}
> +
> +	ret = zynqmp_pm_read_pggs(reg, ret_payload);
> +	if (ret) {
> +		count = -EFAULT;
> +		goto err;
> +	}
> +	ret_payload[1] &= ~mask;
> +	value &= mask;
> +	value |= ret_payload[1];
> +
> +	ret = zynqmp_pm_write_pggs(reg, value);
> +	if (ret)
> +		count = -EFAULT;
> +
> +err:
> +	kfree(kern_buff);
> +
> +	return count;
> +}

> +static struct attribute *zynqmp_ggs_attrs[] = {
> +	&dev_attr_ggs0.attr,
> +	&dev_attr_ggs1.attr,
> +	&dev_attr_ggs2.attr,
> +	&dev_attr_ggs3.attr,
> +	&dev_attr_pggs0.attr,
> +	&dev_attr_pggs1.attr,
> +	&dev_attr_pggs2.attr,
> +	&dev_attr_pggs3.attr,
> +	NULL,
> +};
> +
> +static const struct attribute_group ggs_attribute_group = {
> +	.attrs = zynqmp_ggs_attrs,
> +};
> +
> +const struct attribute_group *firmware_attribute_groups[] = {
> +	&ggs_attribute_group,
> +	NULL,
> +};

ATTRIBUTE_GROUPS()?



> +
>  static int zynqmp_firmware_probe(struct platform_device *pdev)
>  {
>  	struct device *dev = &pdev->dev;
> @@ -910,6 +1226,7 @@ static struct platform_driver zynqmp_firmware_driver = {
>  	.driver = {
>  		.name = "zynqmp_firmware",
>  		.of_match_table = zynqmp_firmware_of_match,
> +		.dev_groups = firmware_attribute_groups,
>  	},
>  	.probe = zynqmp_firmware_probe,
>  	.remove = zynqmp_firmware_remove,
> diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h
> index 725dccf..8ccaa39 100644
> --- a/include/linux/firmware/xlnx-zynqmp.h
> +++ b/include/linux/firmware/xlnx-zynqmp.h
> @@ -13,6 +13,8 @@
>  #ifndef __FIRMWARE_ZYNQMP_H__
>  #define __FIRMWARE_ZYNQMP_H__
>  
> +#include <linux/device.h>

Why is this needed here?

> +
>  #define ZYNQMP_PM_VERSION_MAJOR	1
>  #define ZYNQMP_PM_VERSION_MINOR	0
>  
> @@ -42,6 +44,8 @@
>  
>  #define ZYNQMP_PM_MAX_QOS		100U
>  
> +#define GSS_NUM_REGS	(4)
> +
>  /* Node capabilities */
>  #define	ZYNQMP_PM_CAPABILITY_ACCESS	0x1U
>  #define	ZYNQMP_PM_CAPABILITY_CONTEXT	0x2U


You are not adding anything that depends on device.h in this file, so
just include the needed .h file in the .c file that needs it please.

Helps unwind .h include messes.

thanks,

greg k-h

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[PATCH v3 22/24] firmware: xilinx: Add system shutdown API interface

[Jolly Shah]

From: Rajan Vaja <rajan.vaja@xilinx.com>

Add system shutdown API interface which asks firmware to
perform system shutdown/restart.

Signed-off-by: Rajan Vaja <rajan.vaja@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Jolly Shah <jollys@xilinx.com>
Signed-off-by: Jolly Shah <jolly.shah@xilinx.com>
---
 drivers/firmware/xilinx/zynqmp.c     | 13 +++++++++++++
 include/linux/firmware/xlnx-zynqmp.h |  4 +++-
 2 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
index f671b6b..d3f637b 100644
--- a/drivers/firmware/xilinx/zynqmp.c
+++ b/drivers/firmware/xilinx/zynqmp.c
@@ -834,6 +834,19 @@ int zynqmp_pm_set_requirement(const u32 node, const u32 capabilities,
 EXPORT_SYMBOL_GPL(zynqmp_pm_set_requirement);
 
 /**
+ * zynqmp_pm_system_shutdown - PM call to request a system shutdown or restart
+ * @type:	Shutdown or restart? 0 for shutdown, 1 for restart
+ * @subtype:	Specifies which system should be restarted or shut down
+ *
+ * Return:	Returns status, either success or error+reason
+ */
+int zynqmp_pm_system_shutdown(const u32 type, const u32 subtype)
+{
+	return zynqmp_pm_invoke_fn(PM_SYSTEM_SHUTDOWN, type, subtype,
+				   0, 0, NULL);
+}
+
+/**
  * ggs_show - Show global general storage (ggs) sysfs attribute
  * @device: Device structure
  * @attr: Device attribute structure
diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h
index 8ccaa39..13b9fdb 100644
--- a/include/linux/firmware/xlnx-zynqmp.h
+++ b/include/linux/firmware/xlnx-zynqmp.h
@@ -66,7 +66,8 @@
 
 enum pm_api_id {
 	PM_GET_API_VERSION = 1,
-	PM_REQUEST_NODE = 13,
+	PM_SYSTEM_SHUTDOWN = 12,
+	PM_REQUEST_NODE,
 	PM_RELEASE_NODE,
 	PM_SET_REQUIREMENT,
 	PM_RESET_ASSERT = 17,
@@ -327,6 +328,7 @@ int zynqmp_pm_write_ggs(u32 index, u32 value);
 int zynqmp_pm_read_ggs(u32 index, u32 *value);
 int zynqmp_pm_write_pggs(u32 index, u32 value);
 int zynqmp_pm_read_pggs(u32 index, u32 *value);
+int zynqmp_pm_system_shutdown(const u32 type, const u32 subtype);
 int zynqmp_pm_invoke_fn(u32 pm_api_id, u32 arg0, u32 arg1,
 			u32 arg2, u32 arg3, u32 *ret_payload);
 
-- 
2.7.4


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Re: [PATCH v3 22/24] firmware: xilinx: Add system shutdown API interface

[Greg KH]

On Fri, Mar 06, 2020 at 03:47:30PM -0800, Jolly Shah wrote:
> From: Rajan Vaja <rajan.vaja@xilinx.com>
> 
> Add system shutdown API interface which asks firmware to
> perform system shutdown/restart.
> 
> Signed-off-by: Rajan Vaja <rajan.vaja@xilinx.com>
> Signed-off-by: Michal Simek <michal.simek@xilinx.com>
> Signed-off-by: Jolly Shah <jollys@xilinx.com>
> Signed-off-by: Jolly Shah <jolly.shah@xilinx.com>
> ---
>  drivers/firmware/xilinx/zynqmp.c     | 13 +++++++++++++
>  include/linux/firmware/xlnx-zynqmp.h |  4 +++-
>  2 files changed, 16 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
> index f671b6b..d3f637b 100644
> --- a/drivers/firmware/xilinx/zynqmp.c
> +++ b/drivers/firmware/xilinx/zynqmp.c
> @@ -834,6 +834,19 @@ int zynqmp_pm_set_requirement(const u32 node, const u32 capabilities,
>  EXPORT_SYMBOL_GPL(zynqmp_pm_set_requirement);
>  
>  /**
> + * zynqmp_pm_system_shutdown - PM call to request a system shutdown or restart
> + * @type:	Shutdown or restart? 0 for shutdown, 1 for restart
> + * @subtype:	Specifies which system should be restarted or shut down
> + *
> + * Return:	Returns status, either success or error+reason
> + */
> +int zynqmp_pm_system_shutdown(const u32 type, const u32 subtype)
> +{
> +	return zynqmp_pm_invoke_fn(PM_SYSTEM_SHUTDOWN, type, subtype,
> +				   0, 0, NULL);
> +}
> +
> +/**
>   * ggs_show - Show global general storage (ggs) sysfs attribute
>   * @device: Device structure
>   * @attr: Device attribute structure
> diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h
> index 8ccaa39..13b9fdb 100644
> --- a/include/linux/firmware/xlnx-zynqmp.h
> +++ b/include/linux/firmware/xlnx-zynqmp.h
> @@ -66,7 +66,8 @@
>  
>  enum pm_api_id {
>  	PM_GET_API_VERSION = 1,
> -	PM_REQUEST_NODE = 13,
> +	PM_SYSTEM_SHUTDOWN = 12,
> +	PM_REQUEST_NODE,

So you might have changed the value of PM_REQUEST_NODE, is that ok?

Why remove the explicit value?

thanks,

greg k-h

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[PATCH v3 23/24] firmware: xilinx: Add sysfs to set shutdown scope

[Jolly Shah]

From: Rajan Vaja <rajan.vaja@xilinx.com>

The Linux shutdown functionality implemented via PSCI system_off does
not include an option to set a scope, i.e. which parts of the system to
shut down.

This patch creates sysfs that allows to set the shutdown scope for the
next shutdown request. When the next shutdown is performed, the platform
specific portion of PSCI-system_off can use the chosen shutdown scope.

Signed-off-by: Rajan Vaja <rajan.vaja@xilinx.com>
Signed-off-by: Stefan Krsmanovic <stefan.krsmanovic@aggios.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Jolly Shah <jollys@xilinx.com>
Signed-off-by: Tejas Patel <tejas.patel@xilinx.com>
Signed-off-by: Jolly Shah <jolly.shah@xilinx.com>
---
 .../ABI/stable/sysfs-driver-firmware-zynqmp        |  32 +++++
 drivers/firmware/xilinx/zynqmp.c                   | 150 ++++++++++++++++++++-
 include/linux/firmware/xlnx-zynqmp.h               |  12 ++
 3 files changed, 193 insertions(+), 1 deletion(-)

diff --git a/Documentation/ABI/stable/sysfs-driver-firmware-zynqmp b/Documentation/ABI/stable/sysfs-driver-firmware-zynqmp
index 7fd6e70..b46ec0c 100644
--- a/Documentation/ABI/stable/sysfs-driver-firmware-zynqmp
+++ b/Documentation/ABI/stable/sysfs-driver-firmware-zynqmp
@@ -48,3 +48,35 @@ Description:
 		# echo 0xFFFFFFFF 0x1234ABCD > /sys/devices/platform/firmware\:zynqmp-firmware/pggs0
 
 Users:		Xilinx
+
+What:		/sys/devices/platform/firmware\:zynqmp-firmware/shutdown_scope
+Date:		March 2020
+KernelVersion:	5.6
+Contact:	"Jolly Shah" <jollys@xilinx.com>
+Description:
+		This sysfs interface allows to set the shutdown scope for the
+		next shutdown request. When the next shutdown is performed, the
+		platform specific portion of PSCI-system_off can use the chosen
+		shutdown scope.
+
+		Following are available shutdown scopes(subtypes):
+
+		subsystem:	Only the APU along with all of its peripherals
+				not used by other processing units will be
+				shut down. This may result in the FPD power
+				domain being shut down provided that no other
+				processing unit uses FPD peripherals or DRAM.
+		ps_only:	The complete PS will be shut down, including the
+				RPU, PMU, etc.  Only the PL domain (FPGA)
+				remains untouched.
+		system:		The complete system/device is shut down.
+
+		Usage:
+		# cat /sys/devices/platform/firmware\:zynqmp-firmware/shutdown_scope
+		# echo <scope> > /sys/devices/platform/firmware\:zynqmp-firmware/shutdown_scope
+
+		Example:
+		# cat /sys/devices/platform/firmware\:zynqmp-firmware/shutdown_scope
+		# echo "subsystem" > /sys/devices/platform/firmware\:zynqmp-firmware/shutdown_scope
+
+Users:		Xilinx
diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
index d3f637b..9caf1cf 100644
--- a/drivers/firmware/xilinx/zynqmp.c
+++ b/drivers/firmware/xilinx/zynqmp.c
@@ -847,6 +847,154 @@ int zynqmp_pm_system_shutdown(const u32 type, const u32 subtype)
 }
 
 /**
+ * struct zynqmp_pm_shutdown_scope - Struct for shutdown scope
+ * @subtype:	Shutdown subtype
+ * @name:	Matching string for scope argument
+ *
+ * This struct encapsulates mapping between shutdown scope ID and string.
+ */
+struct zynqmp_pm_shutdown_scope {
+	const enum zynqmp_pm_shutdown_subtype subtype;
+	const char *name;
+};
+
+static struct zynqmp_pm_shutdown_scope shutdown_scopes[] = {
+	[ZYNQMP_PM_SHUTDOWN_SUBTYPE_SUBSYSTEM] = {
+		.subtype = ZYNQMP_PM_SHUTDOWN_SUBTYPE_SUBSYSTEM,
+		.name = "subsystem",
+	},
+	[ZYNQMP_PM_SHUTDOWN_SUBTYPE_PS_ONLY] = {
+		.subtype = ZYNQMP_PM_SHUTDOWN_SUBTYPE_PS_ONLY,
+		.name = "ps_only",
+	},
+	[ZYNQMP_PM_SHUTDOWN_SUBTYPE_SYSTEM] = {
+		.subtype = ZYNQMP_PM_SHUTDOWN_SUBTYPE_SYSTEM,
+		.name = "system",
+	},
+};
+
+static struct zynqmp_pm_shutdown_scope *selected_scope =
+		&shutdown_scopes[ZYNQMP_PM_SHUTDOWN_SUBTYPE_SYSTEM];
+
+/**
+ * zynqmp_pm_is_shutdown_scope_valid - Check if shutdown scope string is valid
+ * @scope_string:	Shutdown scope string
+ *
+ * Return:		Return pointer to matching shutdown scope struct from
+ *			array of available options in system if string is valid,
+ *			otherwise returns NULL.
+ */
+static struct zynqmp_pm_shutdown_scope*
+		zynqmp_pm_is_shutdown_scope_valid(const char *scope_string)
+{
+	int count;
+
+	for (count = 0; count < ARRAY_SIZE(shutdown_scopes); count++)
+		if (sysfs_streq(scope_string, shutdown_scopes[count].name))
+			return &shutdown_scopes[count];
+
+	return NULL;
+}
+
+/**
+ * shutdown_scope_show - Show shutdown_scope sysfs attribute
+ * @device:	Device structure
+ * @attr:	Device attribute structure
+ * @buf:	Requested available shutdown_scope attributes string
+ *
+ * User-space interface for viewing the available scope options for system
+ * shutdown. Scope option for next shutdown call is marked with [].
+ *
+ * Usage: cat /sys/devices/platform/firmware\:zynqmp-firmware/shutdown_scope
+ *
+ * Return:	Number of bytes printed into the buffer.
+ */
+static ssize_t shutdown_scope_show(struct device *device,
+				   struct device_attribute *attr,
+				   char *buf)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(shutdown_scopes); i++) {
+		if (&shutdown_scopes[i] == selected_scope) {
+			strcat(buf, "[");
+			strcat(buf, shutdown_scopes[i].name);
+			strcat(buf, "]");
+		} else {
+			strcat(buf, shutdown_scopes[i].name);
+		}
+		strcat(buf, " ");
+	}
+	strcat(buf, "\n");
+
+	return strlen(buf);
+}
+
+/**
+ * shutdown_scope_store - Store shutdown_scope sysfs attribute
+ * @device:	Device structure
+ * @attr:	Device attribute structure
+ * @buf:	User entered shutdown_scope attribute string
+ * @count:	Buffer size
+ *
+ * User-space interface for setting the scope for the next system shutdown.
+ * Usage: echo <scope> > /sys/devices/platform/firmware\:zynqmp-firmware/shutdown_scope
+ *
+ * The Linux shutdown functionality implemented via PSCI system_off does not
+ * include an option to set a scope, i.e. which parts of the system to shut
+ * down.
+ *
+ * This API function allows to set the shutdown scope for the next shutdown
+ * request by passing it to the ATF running in EL3. When the next shutdown
+ * is performed, the platform specific portion of PSCI-system_off can use
+ * the chosen shutdown scope.
+ *
+ * subsystem:	Only the APU along with all of its peripherals not used by other
+ *		processing units will be shut down. This may result in the FPD
+ *		power domain being shut down provided that no other processing
+ *		unit uses FPD peripherals or DRAM.
+ * ps_only:	The complete PS will be shut down, including the RPU, PMU, etc.
+ *		Only the PL domain (FPGA) remains untouched.
+ * system:	The complete system/device is shut down.
+ *
+ * Return:	count argument if request succeeds, the corresponding error
+ *		code otherwise
+ */
+static ssize_t shutdown_scope_store(struct device *device,
+				    struct device_attribute *attr,
+				    const char *buf, size_t count)
+{
+	int ret;
+	struct zynqmp_pm_shutdown_scope *scope;
+
+	scope = zynqmp_pm_is_shutdown_scope_valid(buf);
+	if (!scope)
+		return -EINVAL;
+
+	ret = zynqmp_pm_system_shutdown(ZYNQMP_PM_SHUTDOWN_TYPE_SETSCOPE_ONLY,
+					scope->subtype);
+	if (ret) {
+		pr_err("unable to set shutdown scope %s\n", buf);
+		return ret;
+	}
+
+	selected_scope = scope;
+
+	return count;
+}
+
+static DEVICE_ATTR_RW(shutdown_scope);
+
+static struct attribute *zynqmp_shutdown_scope_attrs[] = {
+	&dev_attr_shutdown_scope.attr,
+	NULL,
+};
+
+static const struct attribute_group shutdown_scope_attribute_group = {
+	.attrs = zynqmp_shutdown_scope_attrs,
+};
+
+/**
  * ggs_show - Show global general storage (ggs) sysfs attribute
  * @device: Device structure
  * @attr: Device attribute structure
@@ -955,7 +1103,6 @@ static ssize_t ggs_store(struct device *device,
 	ret = zynqmp_pm_write_ggs(reg, value);
 	if (ret)
 		count = -EFAULT;
-
 err:
 	kfree(kern_buff);
 
@@ -1159,6 +1306,7 @@ static const struct attribute_group ggs_attribute_group = {
 
 const struct attribute_group *firmware_attribute_groups[] = {
 	&ggs_attribute_group,
+	&shutdown_scope_attribute_group,
 	NULL,
 };
 
diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h
index 13b9fdb..31ed58c 100644
--- a/include/linux/firmware/xlnx-zynqmp.h
+++ b/include/linux/firmware/xlnx-zynqmp.h
@@ -280,6 +280,18 @@ enum tap_delay_type {
 	PM_TAPDELAY_OUTPUT,
 };
 
+enum zynqmp_pm_shutdown_type {
+	ZYNQMP_PM_SHUTDOWN_TYPE_SHUTDOWN,
+	ZYNQMP_PM_SHUTDOWN_TYPE_RESET,
+	ZYNQMP_PM_SHUTDOWN_TYPE_SETSCOPE_ONLY,
+};
+
+enum zynqmp_pm_shutdown_subtype {
+	ZYNQMP_PM_SHUTDOWN_SUBTYPE_SUBSYSTEM,
+	ZYNQMP_PM_SHUTDOWN_SUBTYPE_PS_ONLY,
+	ZYNQMP_PM_SHUTDOWN_SUBTYPE_SYSTEM,
+};
+
 /**
  * struct zynqmp_pm_query_data - PM query data
  * @qid:	query ID
-- 
2.7.4


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Re: [PATCH v3 23/24] firmware: xilinx: Add sysfs to set shutdown scope

[Greg KH]

On Fri, Mar 06, 2020 at 03:47:31PM -0800, Jolly Shah wrote:
> From: Rajan Vaja <rajan.vaja@xilinx.com>
> 
> The Linux shutdown functionality implemented via PSCI system_off does
> not include an option to set a scope, i.e. which parts of the system to
> shut down.
> 
> This patch creates sysfs that allows to set the shutdown scope for the
> next shutdown request. When the next shutdown is performed, the platform
> specific portion of PSCI-system_off can use the chosen shutdown scope.
> 
> Signed-off-by: Rajan Vaja <rajan.vaja@xilinx.com>
> Signed-off-by: Stefan Krsmanovic <stefan.krsmanovic@aggios.com>
> Signed-off-by: Michal Simek <michal.simek@xilinx.com>
> Signed-off-by: Jolly Shah <jollys@xilinx.com>
> Signed-off-by: Tejas Patel <tejas.patel@xilinx.com>
> Signed-off-by: Jolly Shah <jolly.shah@xilinx.com>
> ---
>  .../ABI/stable/sysfs-driver-firmware-zynqmp        |  32 +++++
>  drivers/firmware/xilinx/zynqmp.c                   | 150 ++++++++++++++++++++-
>  include/linux/firmware/xlnx-zynqmp.h               |  12 ++
>  3 files changed, 193 insertions(+), 1 deletion(-)
> 
> diff --git a/Documentation/ABI/stable/sysfs-driver-firmware-zynqmp b/Documentation/ABI/stable/sysfs-driver-firmware-zynqmp
> index 7fd6e70..b46ec0c 100644
> --- a/Documentation/ABI/stable/sysfs-driver-firmware-zynqmp
> +++ b/Documentation/ABI/stable/sysfs-driver-firmware-zynqmp
> @@ -48,3 +48,35 @@ Description:
>  		# echo 0xFFFFFFFF 0x1234ABCD > /sys/devices/platform/firmware\:zynqmp-firmware/pggs0
>  
>  Users:		Xilinx
> +
> +What:		/sys/devices/platform/firmware\:zynqmp-firmware/shutdown_scope
> +Date:		March 2020
> +KernelVersion:	5.6
> +Contact:	"Jolly Shah" <jollys@xilinx.com>
> +Description:
> +		This sysfs interface allows to set the shutdown scope for the
> +		next shutdown request. When the next shutdown is performed, the
> +		platform specific portion of PSCI-system_off can use the chosen
> +		shutdown scope.
> +
> +		Following are available shutdown scopes(subtypes):
> +
> +		subsystem:	Only the APU along with all of its peripherals
> +				not used by other processing units will be
> +				shut down. This may result in the FPD power
> +				domain being shut down provided that no other
> +				processing unit uses FPD peripherals or DRAM.
> +		ps_only:	The complete PS will be shut down, including the
> +				RPU, PMU, etc.  Only the PL domain (FPGA)
> +				remains untouched.
> +		system:		The complete system/device is shut down.
> +
> +		Usage:
> +		# cat /sys/devices/platform/firmware\:zynqmp-firmware/shutdown_scope
> +		# echo <scope> > /sys/devices/platform/firmware\:zynqmp-firmware/shutdown_scope
> +
> +		Example:
> +		# cat /sys/devices/platform/firmware\:zynqmp-firmware/shutdown_scope
> +		# echo "subsystem" > /sys/devices/platform/firmware\:zynqmp-firmware/shutdown_scope
> +
> +Users:		Xilinx
> diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
> index d3f637b..9caf1cf 100644
> --- a/drivers/firmware/xilinx/zynqmp.c
> +++ b/drivers/firmware/xilinx/zynqmp.c
> @@ -847,6 +847,154 @@ int zynqmp_pm_system_shutdown(const u32 type, const u32 subtype)
>  }
>  
>  /**
> + * struct zynqmp_pm_shutdown_scope - Struct for shutdown scope
> + * @subtype:	Shutdown subtype
> + * @name:	Matching string for scope argument
> + *
> + * This struct encapsulates mapping between shutdown scope ID and string.
> + */
> +struct zynqmp_pm_shutdown_scope {
> +	const enum zynqmp_pm_shutdown_subtype subtype;
> +	const char *name;
> +};
> +
> +static struct zynqmp_pm_shutdown_scope shutdown_scopes[] = {
> +	[ZYNQMP_PM_SHUTDOWN_SUBTYPE_SUBSYSTEM] = {
> +		.subtype = ZYNQMP_PM_SHUTDOWN_SUBTYPE_SUBSYSTEM,
> +		.name = "subsystem",
> +	},
> +	[ZYNQMP_PM_SHUTDOWN_SUBTYPE_PS_ONLY] = {
> +		.subtype = ZYNQMP_PM_SHUTDOWN_SUBTYPE_PS_ONLY,
> +		.name = "ps_only",
> +	},
> +	[ZYNQMP_PM_SHUTDOWN_SUBTYPE_SYSTEM] = {
> +		.subtype = ZYNQMP_PM_SHUTDOWN_SUBTYPE_SYSTEM,
> +		.name = "system",
> +	},
> +};
> +
> +static struct zynqmp_pm_shutdown_scope *selected_scope =
> +		&shutdown_scopes[ZYNQMP_PM_SHUTDOWN_SUBTYPE_SYSTEM];
> +
> +/**
> + * zynqmp_pm_is_shutdown_scope_valid - Check if shutdown scope string is valid
> + * @scope_string:	Shutdown scope string
> + *
> + * Return:		Return pointer to matching shutdown scope struct from
> + *			array of available options in system if string is valid,
> + *			otherwise returns NULL.
> + */
> +static struct zynqmp_pm_shutdown_scope*
> +		zynqmp_pm_is_shutdown_scope_valid(const char *scope_string)
> +{
> +	int count;
> +
> +	for (count = 0; count < ARRAY_SIZE(shutdown_scopes); count++)
> +		if (sysfs_streq(scope_string, shutdown_scopes[count].name))
> +			return &shutdown_scopes[count];
> +
> +	return NULL;
> +}
> +
> +/**
> + * shutdown_scope_show - Show shutdown_scope sysfs attribute
> + * @device:	Device structure
> + * @attr:	Device attribute structure
> + * @buf:	Requested available shutdown_scope attributes string
> + *
> + * User-space interface for viewing the available scope options for system
> + * shutdown. Scope option for next shutdown call is marked with [].
> + *
> + * Usage: cat /sys/devices/platform/firmware\:zynqmp-firmware/shutdown_scope
> + *
> + * Return:	Number of bytes printed into the buffer.
> + */
> +static ssize_t shutdown_scope_show(struct device *device,
> +				   struct device_attribute *attr,
> +				   char *buf)
> +{
> +	int i;
> +
> +	for (i = 0; i < ARRAY_SIZE(shutdown_scopes); i++) {
> +		if (&shutdown_scopes[i] == selected_scope) {
> +			strcat(buf, "[");
> +			strcat(buf, shutdown_scopes[i].name);
> +			strcat(buf, "]");
> +		} else {
> +			strcat(buf, shutdown_scopes[i].name);
> +		}
> +		strcat(buf, " ");
> +	}
> +	strcat(buf, "\n");
> +
> +	return strlen(buf);
> +}
> +
> +/**
> + * shutdown_scope_store - Store shutdown_scope sysfs attribute
> + * @device:	Device structure
> + * @attr:	Device attribute structure
> + * @buf:	User entered shutdown_scope attribute string
> + * @count:	Buffer size
> + *
> + * User-space interface for setting the scope for the next system shutdown.
> + * Usage: echo <scope> > /sys/devices/platform/firmware\:zynqmp-firmware/shutdown_scope
> + *
> + * The Linux shutdown functionality implemented via PSCI system_off does not
> + * include an option to set a scope, i.e. which parts of the system to shut
> + * down.
> + *
> + * This API function allows to set the shutdown scope for the next shutdown
> + * request by passing it to the ATF running in EL3. When the next shutdown
> + * is performed, the platform specific portion of PSCI-system_off can use
> + * the chosen shutdown scope.
> + *
> + * subsystem:	Only the APU along with all of its peripherals not used by other
> + *		processing units will be shut down. This may result in the FPD
> + *		power domain being shut down provided that no other processing
> + *		unit uses FPD peripherals or DRAM.
> + * ps_only:	The complete PS will be shut down, including the RPU, PMU, etc.
> + *		Only the PL domain (FPGA) remains untouched.
> + * system:	The complete system/device is shut down.
> + *
> + * Return:	count argument if request succeeds, the corresponding error
> + *		code otherwise
> + */
> +static ssize_t shutdown_scope_store(struct device *device,
> +				    struct device_attribute *attr,
> +				    const char *buf, size_t count)
> +{
> +	int ret;
> +	struct zynqmp_pm_shutdown_scope *scope;
> +
> +	scope = zynqmp_pm_is_shutdown_scope_valid(buf);
> +	if (!scope)
> +		return -EINVAL;
> +
> +	ret = zynqmp_pm_system_shutdown(ZYNQMP_PM_SHUTDOWN_TYPE_SETSCOPE_ONLY,
> +					scope->subtype);
> +	if (ret) {
> +		pr_err("unable to set shutdown scope %s\n", buf);
> +		return ret;
> +	}
> +
> +	selected_scope = scope;
> +
> +	return count;
> +}
> +
> +static DEVICE_ATTR_RW(shutdown_scope);
> +
> +static struct attribute *zynqmp_shutdown_scope_attrs[] = {
> +	&dev_attr_shutdown_scope.attr,
> +	NULL,
> +};
> +
> +static const struct attribute_group shutdown_scope_attribute_group = {
> +	.attrs = zynqmp_shutdown_scope_attrs,
> +};

ATTRIBUTE_GROUPS()?

thanks,

greg k-h

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[PATCH v3 24/24] firmware: xilinx: Add sysfs and API to set boot health status

[Jolly Shah]

From: Rajan Vaja <rajan.vaja@xilinx.com>

Add sysfs interface to set boot health status from user space.
Add API used by this interface to communicate with firmware.

If PMUFW is compiled with CHECK_HEALTHY_BOOT, it will check the
healthy bit on FPD WDT expiration. If healthy bit is set by a user
application running in Linux, PMUFW will do APU only restart. If
healthy bit is not set during FPD WDT expiration, PMUFW will do
system restart.

Signed-off-by: Rajan Vaja <rajan.vaja@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Jolly Shah <jollys@xilinx.com>
Signed-off-by: Tejas Patel <tejas.patel@xilinx.com>
Signed-off-by: Jolly Shah <jolly.shah@xilinx.com>
---
 .../ABI/stable/sysfs-driver-firmware-zynqmp        | 21 ++++++++
 drivers/firmware/xilinx/zynqmp.c                   | 63 ++++++++++++++++++++++
 include/linux/firmware/xlnx-zynqmp.h               |  3 ++
 3 files changed, 87 insertions(+)

diff --git a/Documentation/ABI/stable/sysfs-driver-firmware-zynqmp b/Documentation/ABI/stable/sysfs-driver-firmware-zynqmp
index b46ec0c..a37b408 100644
--- a/Documentation/ABI/stable/sysfs-driver-firmware-zynqmp
+++ b/Documentation/ABI/stable/sysfs-driver-firmware-zynqmp
@@ -80,3 +80,24 @@ Description:
 		# echo "subsystem" > /sys/devices/platform/firmware\:zynqmp-firmware/shutdown_scope
 
 Users:		Xilinx
+
+What:		/sys/devices/platform/firmware\:zynqmp-firmware/health_status
+Date:		March 2020
+KernelVersion:	5.6
+Contact:	"Jolly Shah" <jollys@xilinx.com>
+Description:
+		This sysfs interface allows to set the health status. If PMUFW
+		is compiled with CHECK_HEALTHY_BOOT, it will check the healthy
+		bit on FPD WDT expiration. If healthy bit is set by a user
+		application running in Linux, PMUFW will do APU only restart. If
+		healthy bit is not set during FPD WDT expiration, PMUFW will do
+		system restart.
+
+		Usage:
+		Set healthy bit
+		# echo 1 > /sys/devices/platform/firmware\:zynqmp-firmware/health_status
+
+		Unset healthy bit
+		# echo 0 > /sys/devices/platform/firmware\:zynqmp-firmware/health_status
+
+Users:		Xilinx
diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
index 9caf1cf..fc3aa4e 100644
--- a/drivers/firmware/xilinx/zynqmp.c
+++ b/drivers/firmware/xilinx/zynqmp.c
@@ -667,6 +667,21 @@ int zynqmp_pm_read_pggs(u32 index, u32 *value)
 EXPORT_SYMBOL_GPL(zynqmp_pm_read_pggs);
 
 /**
+ * zynqmp_pm_set_boot_health_status() - PM API for setting healthy boot status
+ * @value	Status value to be written
+ *
+ * This function sets healthy bit value to indicate boot health status
+ * to firmware.
+ *
+ * @return      Returns status, either success or error+reason
+ */
+int zynqmp_pm_set_boot_health_status(u32 value)
+{
+	return zynqmp_pm_invoke_fn(PM_IOCTL, 0, IOCTL_SET_BOOT_HEALTH_STATUS,
+				   value, 0, NULL);
+}
+
+/**
  * zynqmp_pm_reset_assert - Request setting of reset (1 - assert, 0 - release)
  * @reset:		Reset to be configured
  * @assert_flag:	Flag stating should reset be asserted (1) or
@@ -995,6 +1010,53 @@ static const struct attribute_group shutdown_scope_attribute_group = {
 };
 
 /**
+ * health_status_store - Store health_status sysfs attribute
+ * @device:	Device structure
+ * @attr:	Device attribute structure
+ * @buf:	User entered health_status attribute string
+ * @count:	Buffer size
+ *
+ * User-space interface for setting the boot health status.
+ * Usage: echo <value> > /sys/devices/platform/firmware\:zynqmp-firmware/health_status
+ *
+ * Value:
+ *	1 - Set healthy bit to 1
+ *	0 - Unset healthy bit
+ *
+ * Return:	count argument if request succeeds, the corresponding error
+ *		code otherwise
+ */
+static ssize_t health_status_store(struct device *device,
+				   struct device_attribute *attr,
+				   const char *buf, size_t count)
+{
+	int ret;
+	unsigned int value;
+
+	ret = kstrtouint(buf, 10, &value);
+	if (ret)
+		return ret;
+
+	ret = zynqmp_pm_set_boot_health_status(value);
+	if (ret) {
+		pr_err("unable to set healthy bit value to %u\n", value);
+		return ret;
+	}
+
+	return count;
+}
+
+static DEVICE_ATTR_WO(health_status);
+
+static struct attribute *zynqmp_health_status_attrs[] = {
+	&dev_attr_health_status.attr,
+	NULL,
+};
+static const struct attribute_group health_status_attribute_group = {
+	.attrs = zynqmp_health_status_attrs,
+};
+
+/**
  * ggs_show - Show global general storage (ggs) sysfs attribute
  * @device: Device structure
  * @attr: Device attribute structure
@@ -1307,6 +1369,7 @@ static const struct attribute_group ggs_attribute_group = {
 const struct attribute_group *firmware_attribute_groups[] = {
 	&ggs_attribute_group,
 	&shutdown_scope_attribute_group,
+	&health_status_attribute_group,
 	NULL,
 };
 
diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h
index 31ed58c..1900349 100644
--- a/include/linux/firmware/xlnx-zynqmp.h
+++ b/include/linux/firmware/xlnx-zynqmp.h
@@ -114,6 +114,8 @@ enum pm_ioctl_id {
 	IOCTL_READ_GGS,
 	IOCTL_WRITE_PGGS,
 	IOCTL_READ_PGGS,
+	/* Set healthy bit value */
+	IOCTL_SET_BOOT_HEALTH_STATUS = 17,
 };
 
 enum pm_query_id {
@@ -341,6 +343,7 @@ int zynqmp_pm_read_ggs(u32 index, u32 *value);
 int zynqmp_pm_write_pggs(u32 index, u32 value);
 int zynqmp_pm_read_pggs(u32 index, u32 *value);
 int zynqmp_pm_system_shutdown(const u32 type, const u32 subtype);
+int zynqmp_pm_set_boot_health_status(u32 value);
 int zynqmp_pm_invoke_fn(u32 pm_api_id, u32 arg0, u32 arg1,
 			u32 arg2, u32 arg3, u32 *ret_payload);
 
-- 
2.7.4


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Re: [PATCH v3 24/24] firmware: xilinx: Add sysfs and API to set boot health status

[Greg KH]

On Fri, Mar 06, 2020 at 03:47:32PM -0800, Jolly Shah wrote:
> From: Rajan Vaja <rajan.vaja@xilinx.com>
> 
> Add sysfs interface to set boot health status from user space.
> Add API used by this interface to communicate with firmware.
> 
> If PMUFW is compiled with CHECK_HEALTHY_BOOT, it will check the
> healthy bit on FPD WDT expiration. If healthy bit is set by a user
> application running in Linux, PMUFW will do APU only restart. If
> healthy bit is not set during FPD WDT expiration, PMUFW will do
> system restart.
> 
> Signed-off-by: Rajan Vaja <rajan.vaja@xilinx.com>
> Signed-off-by: Michal Simek <michal.simek@xilinx.com>
> Signed-off-by: Jolly Shah <jollys@xilinx.com>
> Signed-off-by: Tejas Patel <tejas.patel@xilinx.com>
> Signed-off-by: Jolly Shah <jolly.shah@xilinx.com>
> ---
>  .../ABI/stable/sysfs-driver-firmware-zynqmp        | 21 ++++++++
>  drivers/firmware/xilinx/zynqmp.c                   | 63 ++++++++++++++++++++++
>  include/linux/firmware/xlnx-zynqmp.h               |  3 ++
>  3 files changed, 87 insertions(+)
> 
> diff --git a/Documentation/ABI/stable/sysfs-driver-firmware-zynqmp b/Documentation/ABI/stable/sysfs-driver-firmware-zynqmp
> index b46ec0c..a37b408 100644
> --- a/Documentation/ABI/stable/sysfs-driver-firmware-zynqmp
> +++ b/Documentation/ABI/stable/sysfs-driver-firmware-zynqmp
> @@ -80,3 +80,24 @@ Description:
>  		# echo "subsystem" > /sys/devices/platform/firmware\:zynqmp-firmware/shutdown_scope
>  
>  Users:		Xilinx
> +
> +What:		/sys/devices/platform/firmware\:zynqmp-firmware/health_status
> +Date:		March 2020
> +KernelVersion:	5.6
> +Contact:	"Jolly Shah" <jollys@xilinx.com>
> +Description:
> +		This sysfs interface allows to set the health status. If PMUFW
> +		is compiled with CHECK_HEALTHY_BOOT, it will check the healthy
> +		bit on FPD WDT expiration. If healthy bit is set by a user
> +		application running in Linux, PMUFW will do APU only restart. If
> +		healthy bit is not set during FPD WDT expiration, PMUFW will do
> +		system restart.
> +
> +		Usage:
> +		Set healthy bit
> +		# echo 1 > /sys/devices/platform/firmware\:zynqmp-firmware/health_status
> +
> +		Unset healthy bit
> +		# echo 0 > /sys/devices/platform/firmware\:zynqmp-firmware/health_status
> +
> +Users:		Xilinx
> diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
> index 9caf1cf..fc3aa4e 100644
> --- a/drivers/firmware/xilinx/zynqmp.c
> +++ b/drivers/firmware/xilinx/zynqmp.c
> @@ -667,6 +667,21 @@ int zynqmp_pm_read_pggs(u32 index, u32 *value)
>  EXPORT_SYMBOL_GPL(zynqmp_pm_read_pggs);
>  
>  /**
> + * zynqmp_pm_set_boot_health_status() - PM API for setting healthy boot status
> + * @value	Status value to be written
> + *
> + * This function sets healthy bit value to indicate boot health status
> + * to firmware.
> + *
> + * @return      Returns status, either success or error+reason
> + */
> +int zynqmp_pm_set_boot_health_status(u32 value)
> +{
> +	return zynqmp_pm_invoke_fn(PM_IOCTL, 0, IOCTL_SET_BOOT_HEALTH_STATUS,
> +				   value, 0, NULL);
> +}
> +
> +/**
>   * zynqmp_pm_reset_assert - Request setting of reset (1 - assert, 0 - release)
>   * @reset:		Reset to be configured
>   * @assert_flag:	Flag stating should reset be asserted (1) or
> @@ -995,6 +1010,53 @@ static const struct attribute_group shutdown_scope_attribute_group = {
>  };
>  
>  /**
> + * health_status_store - Store health_status sysfs attribute
> + * @device:	Device structure
> + * @attr:	Device attribute structure
> + * @buf:	User entered health_status attribute string
> + * @count:	Buffer size
> + *
> + * User-space interface for setting the boot health status.
> + * Usage: echo <value> > /sys/devices/platform/firmware\:zynqmp-firmware/health_status
> + *
> + * Value:
> + *	1 - Set healthy bit to 1
> + *	0 - Unset healthy bit
> + *
> + * Return:	count argument if request succeeds, the corresponding error
> + *		code otherwise
> + */
> +static ssize_t health_status_store(struct device *device,
> +				   struct device_attribute *attr,
> +				   const char *buf, size_t count)
> +{
> +	int ret;
> +	unsigned int value;
> +
> +	ret = kstrtouint(buf, 10, &value);
> +	if (ret)
> +		return ret;
> +
> +	ret = zynqmp_pm_set_boot_health_status(value);
> +	if (ret) {
> +		pr_err("unable to set healthy bit value to %u\n", value);

You have a valid struct device right there, use it!

dev_err() please...

thanks,

greg k-h

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Re: [PATCH v3 00/24] firmware: xilinx: Add xilinx specific sysfs interface

[Greg KH]

On Fri, Mar 06, 2020 at 03:47:08PM -0800, Jolly Shah wrote:
> This patch series adds xilinx specific sysfs interface for below
> purposes:
> - Register access
> - Set shutdown scope
> - Set boot health status bit
> 
> Also this patch series removes eemi ops and adds API
> corresponding to each eemi ops.

I've applied the first 19 patches here, they looked good, thanks for
doing that work, makes things a lot more "obvious" as to what is going
on here.

The rest, please see my review comments and redo.

thanks,

greg k-h

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Re: [PATCH v3 00/24] firmware: xilinx: Add xilinx specific sysfs interface

[Jolly Shah]

Hi Greg,
Thanks for the review.

 > ------Original Message------
 > From: 'Greg Kh' <gregkh@linuxfoundation.org>
 > Sent:  Wednesday, March 18, 2020 4:54AM
 > To: Jolly Shah <jolly.shah@xilinx.com>
 > Cc: Ard.biesheuvel@linaro.org <ard.biesheuvel@linaro.org>, 
Mingo@kernel.org <mingo@kernel.org>, Matt@codeblueprint.co.uk 
<matt@codeblueprint.co.uk>, Sudeep.holla@arm.com <sudeep.holla@arm.com>, 
Hkallweit1@gmail.com <hkallweit1@gmail.com>, Keescook@chromium.org 
<keescook@chromium.org>, Dmitry.torokhov@gmail.com 
<dmitry.torokhov@gmail.com>, Michal Simek <michal.simek@xilinx.com>, 
Rajan Vaja <rajanv@xilinx.com>, Linux-arm-kernel@lists.infradead.org 
<linux-arm-kernel@lists.infradead.org>, Linux-kernel@vger.kernel.org 
<linux-kernel@vger.kernel.org>
 > Subject: Re: [PATCH v3 00/24] firmware: xilinx: Add xilinx specific 
sysfs interface
 >
> On Fri, Mar 06, 2020 at 03:47:08PM -0800, Jolly Shah wrote:
>> This patch series adds xilinx specific sysfs interface for below
>> purposes:
>> - Register access
>> - Set shutdown scope
>> - Set boot health status bit
>>
>> Also this patch series removes eemi ops and adds API
>> corresponding to each eemi ops.
> 
> I've applied the first 19 patches here, they looked good, thanks for
> doing that work, makes things a lot more "obvious" as to what is going
> on here.
> 
> The rest, please see my review comments and redo.
> 

Submitted v4 patchset. It addresses your review comments. Also took care 
of compilation issues observed for first 19 patches.
Please review.

Thanks,
Jolly Shah


> thanks,
> 
> greg k-h
> 

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