From: Jolly Shah <jolly.shah@xilinx.com>
To: <ard.biesheuvel@linaro.org>, <mingo@kernel.org>,
<gregkh@linuxfoundation.org>, <matt@codeblueprint.co.uk>,
<sudeep.holla@arm.com>, <hkallweit1@gmail.com>,
<keescook@chromium.org>, <dmitry.torokhov@gmail.com>,
<mturquette@baylibre.com>, <sboyd@codeaurora.org>,
<michal.simek@xilinx.com>, <robh+dt@kernel.org>,
<mark.rutland@arm.com>, <linux-clk@vger.kernel.org>
Cc: <rajanv@xilinx.com>, <linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>, <devicetree@vger.kernel.org>,
Jolly Shah <jollys@xilinx.com>
Subject: [PATCH v6 05/11] firmware: xilinx: Add clock APIs
Date: Tue, 10 Apr 2018 12:38:41 -0700 [thread overview]
Message-ID: <1523389127-14243-6-git-send-email-jollys@xilinx.com> (raw)
In-Reply-To: <1523389127-14243-1-git-send-email-jollys@xilinx.com>
From: Rajan Vaja <rajanv@xilinx.com>
Add clock APIs to control clocks through firmware
interface.
Signed-off-by: Rajan Vaja <rajanv@xilinx.com>
Signed-off-by: Jolly Shah <jollys@xilinx.com>
---
drivers/firmware/xilinx/zynqmp.c | 186 ++++++++++++++++++++++++++++++++++-
include/linux/firmware/xlnx-zynqmp.h | 30 ++++++
2 files changed, 214 insertions(+), 2 deletions(-)
diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
index ef09c44..c172fd2 100644
--- a/drivers/firmware/xilinx/zynqmp.c
+++ b/drivers/firmware/xilinx/zynqmp.c
@@ -267,14 +267,196 @@ static int zynqmp_pm_ioctl(u32 node_id, u32 ioctl_id, u32 arg1, u32 arg2,
*/
static int zynqmp_pm_query_data(struct zynqmp_pm_query_data qdata, u32 *out)
{
- return zynqmp_pm_invoke_fn(PM_QUERY_DATA, qdata.qid, qdata.arg1,
- qdata.arg2, qdata.arg3, out);
+ int ret;
+
+ ret = zynqmp_pm_invoke_fn(PM_QUERY_DATA, qdata.qid, qdata.arg1,
+ qdata.arg2, qdata.arg3, out);
+
+ /*
+ * For clock name query, all bytes in SMC response are clock name
+ * characters and return code is always success. For invalid clocks,
+ * clock name bytes would be 0s.
+ */
+ return qdata.qid == PM_QID_CLOCK_GET_NAME ? 0 : ret;
+}
+
+/**
+ * zynqmp_pm_clock_enable() - Enable the clock for given id
+ * @clock_id: ID of the clock to be enabled
+ *
+ * This function is used by master to enable the clock
+ * including peripherals and PLL clocks.
+ *
+ * Return: Returns status, either success or error+reason
+ */
+static int zynqmp_pm_clock_enable(u32 clock_id)
+{
+ return zynqmp_pm_invoke_fn(PM_CLOCK_ENABLE, clock_id, 0, 0, 0, NULL);
+}
+
+/**
+ * zynqmp_pm_clock_disable() - Disable the clock for given id
+ * @clock_id: ID of the clock to be disable
+ *
+ * This function is used by master to disable the clock
+ * including peripherals and PLL clocks.
+ *
+ * Return: Returns status, either success or error+reason
+ */
+static int zynqmp_pm_clock_disable(u32 clock_id)
+{
+ return zynqmp_pm_invoke_fn(PM_CLOCK_DISABLE, clock_id, 0, 0, 0, NULL);
+}
+
+/**
+ * zynqmp_pm_clock_getstate() - Get the clock state for given id
+ * @clock_id: ID of the clock to be queried
+ * @state: 1/0 (Enabled/Disabled)
+ *
+ * This function is used by master to get the state of clock
+ * including peripherals and PLL clocks.
+ *
+ * Return: Returns status, either success or error+reason
+ */
+static int zynqmp_pm_clock_getstate(u32 clock_id, u32 *state)
+{
+ u32 ret_payload[PAYLOAD_ARG_CNT];
+ int ret;
+
+ ret = zynqmp_pm_invoke_fn(PM_CLOCK_GETSTATE, clock_id, 0,
+ 0, 0, ret_payload);
+ *state = ret_payload[1];
+
+ return ret;
+}
+
+/**
+ * zynqmp_pm_clock_setdivider() - Set the clock divider for given id
+ * @clock_id: ID of the clock
+ * @divider: divider value
+ *
+ * This function is used by master to set divider for any clock
+ * to achieve desired rate.
+ *
+ * Return: Returns status, either success or error+reason
+ */
+static int zynqmp_pm_clock_setdivider(u32 clock_id, u32 divider)
+{
+ return zynqmp_pm_invoke_fn(PM_CLOCK_SETDIVIDER, clock_id, divider,
+ 0, 0, NULL);
+}
+
+/**
+ * zynqmp_pm_clock_getdivider() - Get the clock divider for given id
+ * @clock_id: ID of the clock
+ * @divider: divider value
+ *
+ * This function is used by master to get divider values
+ * for any clock.
+ *
+ * Return: Returns status, either success or error+reason
+ */
+static int zynqmp_pm_clock_getdivider(u32 clock_id, u32 *divider)
+{
+ u32 ret_payload[PAYLOAD_ARG_CNT];
+ int ret;
+
+ ret = zynqmp_pm_invoke_fn(PM_CLOCK_GETDIVIDER, clock_id, 0,
+ 0, 0, ret_payload);
+ *divider = ret_payload[1];
+
+ return ret;
+}
+
+/**
+ * zynqmp_pm_clock_setrate() - Set the clock rate for given id
+ * @clock_id: ID of the clock
+ * @rate: rate value in hz
+ *
+ * This function is used by master to set rate for any clock.
+ *
+ * Return: Returns status, either success or error+reason
+ */
+static int zynqmp_pm_clock_setrate(u32 clock_id, u64 rate)
+{
+ return zynqmp_pm_invoke_fn(PM_CLOCK_SETRATE, clock_id,
+ rate & 0xFFFFFFFF,
+ (rate >> 32) & 0xFFFFFFFF,
+ 0, NULL);
+}
+
+/**
+ * zynqmp_pm_clock_getrate() - Get the clock rate for given id
+ * @clock_id: ID of the clock
+ * @rate: rate value in hz
+ *
+ * This function is used by master to get rate
+ * for any clock.
+ *
+ * Return: Returns status, either success or error+reason
+ */
+static int zynqmp_pm_clock_getrate(u32 clock_id, u64 *rate)
+{
+ u32 ret_payload[PAYLOAD_ARG_CNT];
+ int ret;
+
+ ret = zynqmp_pm_invoke_fn(PM_CLOCK_GETRATE, clock_id, 0,
+ 0, 0, ret_payload);
+ *rate = ((u64)ret_payload[2] << 32) | ret_payload[1];
+
+ return ret;
+}
+
+/**
+ * zynqmp_pm_clock_setparent() - Set the clock parent for given id
+ * @clock_id: ID of the clock
+ * @parent_id: parent id
+ *
+ * This function is used by master to set parent for any clock.
+ *
+ * Return: Returns status, either success or error+reason
+ */
+static 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);
+}
+
+/**
+ * zynqmp_pm_clock_getparent() - Get the clock parent for given id
+ * @clock_id: ID of the clock
+ * @parent_id: parent id
+ *
+ * This function is used by master to get parent index
+ * for any clock.
+ *
+ * Return: Returns status, either success or error+reason
+ */
+static int zynqmp_pm_clock_getparent(u32 clock_id, u32 *parent_id)
+{
+ u32 ret_payload[PAYLOAD_ARG_CNT];
+ int ret;
+
+ ret = zynqmp_pm_invoke_fn(PM_CLOCK_GETPARENT, clock_id, 0,
+ 0, 0, ret_payload);
+ *parent_id = ret_payload[1];
+
+ return ret;
}
static const struct zynqmp_eemi_ops eemi_ops = {
.get_api_version = zynqmp_pm_get_api_version,
.ioctl = zynqmp_pm_ioctl,
.query_data = zynqmp_pm_query_data,
+ .clock_enable = zynqmp_pm_clock_enable,
+ .clock_disable = zynqmp_pm_clock_disable,
+ .clock_getstate = zynqmp_pm_clock_getstate,
+ .clock_setdivider = zynqmp_pm_clock_setdivider,
+ .clock_getdivider = zynqmp_pm_clock_getdivider,
+ .clock_setrate = zynqmp_pm_clock_setrate,
+ .clock_getrate = zynqmp_pm_clock_getrate,
+ .clock_setparent = zynqmp_pm_clock_setparent,
+ .clock_getparent = zynqmp_pm_clock_getparent,
};
/**
diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h
index 6f05f07..bebf926 100644
--- a/include/linux/firmware/xlnx-zynqmp.h
+++ b/include/linux/firmware/xlnx-zynqmp.h
@@ -36,6 +36,15 @@ enum pm_api_id {
PM_GET_API_VERSION = 1,
PM_IOCTL = 34,
PM_QUERY_DATA,
+ PM_CLOCK_ENABLE,
+ PM_CLOCK_DISABLE,
+ PM_CLOCK_GETSTATE,
+ PM_CLOCK_SETDIVIDER,
+ PM_CLOCK_GETDIVIDER,
+ PM_CLOCK_SETRATE,
+ PM_CLOCK_GETRATE,
+ PM_CLOCK_SETPARENT,
+ PM_CLOCK_GETPARENT,
};
/* PMU-FW return status codes */
@@ -49,8 +58,20 @@ enum pm_ret_status {
XST_PM_ABORT_SUSPEND,
};
+enum pm_ioctl_id {
+ IOCTL_SET_PLL_FRAC_MODE = 8,
+ IOCTL_GET_PLL_FRAC_MODE,
+ IOCTL_SET_PLL_FRAC_DATA,
+ IOCTL_GET_PLL_FRAC_DATA,
+};
+
enum pm_query_id {
PM_QID_INVALID,
+ PM_QID_CLOCK_GET_NAME,
+ PM_QID_CLOCK_GET_TOPOLOGY,
+ PM_QID_CLOCK_GET_FIXEDFACTOR_PARAMS,
+ PM_QID_CLOCK_GET_PARENTS,
+ PM_QID_CLOCK_GET_ATTRIBUTES,
};
/**
@@ -71,6 +92,15 @@ struct zynqmp_eemi_ops {
int (*get_api_version)(u32 *version);
int (*ioctl)(u32 node_id, u32 ioctl_id, u32 arg1, u32 arg2, u32 *out);
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);
+ 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);
+ int (*clock_setparent)(u32 clock_id, u32 parent_id);
+ int (*clock_getparent)(u32 clock_id, u32 *parent_id);
};
#if IS_REACHABLE(CONFIG_ARCH_ZYNQMP)
--
2.7.4
next prev parent reply other threads:[~2018-04-10 19:38 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-10 19:38 [PATCH v6 00/11] drivers: Introduce firmware dnd clock river for ZynqMP core Jolly Shah
2018-04-10 19:38 ` [PATCH v6 01/11] dt-bindings: firmware: Add bindings for ZynqMP firmware Jolly Shah
2018-04-13 15:15 ` Rob Herring
2018-04-23 11:56 ` Greg KH
2018-04-10 19:38 ` [PATCH v6 02/11] firmware: xilinx: Add Zynqmp firmware driver Jolly Shah
2018-05-10 14:04 ` Sudeep Holla
2018-05-14 19:06 ` Jolly Shah
2018-04-10 19:38 ` [PATCH v6 03/11] firmware: xilinx: Add zynqmp IOCTL API for device control Jolly Shah
2018-05-10 14:09 ` Sudeep Holla
2018-05-14 19:11 ` Jolly Shah
2018-04-10 19:38 ` [PATCH v6 04/11] firmware: xilinx: Add query data API Jolly Shah
2018-05-10 14:12 ` Sudeep Holla
2018-05-14 19:16 ` Jolly Shah
2018-05-15 9:34 ` Sudeep Holla
2018-05-15 20:29 ` Jolly Shah
2018-04-10 19:38 ` Jolly Shah [this message]
2018-04-10 19:38 ` [PATCH v6 06/11] firmware: xilinx: Add debugfs interface Jolly Shah
2018-05-10 14:26 ` Sudeep Holla
2018-04-10 19:38 ` [PATCH v6 07/11] firmware: xilinx: Add debugfs for IOCTL API Jolly Shah
2018-04-10 19:38 ` [PATCH v6 08/11] firmware: xilinx: Add debugfs for query data API Jolly Shah
2018-04-10 19:38 ` [PATCH v6 09/11] firmware: xilinx: Add debugfs for clock control APIs Jolly Shah
2018-05-10 14:31 ` Sudeep Holla
2018-05-14 19:18 ` Jolly Shah
2018-05-15 8:57 ` Sudeep Holla
2018-05-25 19:23 ` Jolly Shah
2018-04-10 19:38 ` [PATCH v6 10/11] dt-bindings: clock: Add bindings for ZynqMP clock driver Jolly Shah
2018-04-16 21:28 ` Rob Herring
2018-04-10 19:38 ` [PATCH v6 11/11] drivers: clk: Add " Jolly Shah
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