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Subject[PATCH v6 09/11] firmware: xilinx: Add debugfs for clock control APIs
Date
From: Rajan Vaja <rajanv@xilinx.com>

Add debugfs file to control clocks using firmware APIs
through debugfs interface.

Signed-off-by: Rajan Vaja <rajanv@xilinx.com>
Signed-off-by: Jolly Shah <jollys@xilinx.com>
---
drivers/firmware/xilinx/zynqmp-debug.c | 48 ++++++++++++++++++++++++++++++++++
1 file changed, 48 insertions(+)

diff --git a/drivers/firmware/xilinx/zynqmp-debug.c b/drivers/firmware/xilinx/zynqmp-debug.c
index 1cb69f7..837fcd1 100644
--- a/drivers/firmware/xilinx/zynqmp-debug.c
+++ b/drivers/firmware/xilinx/zynqmp-debug.c
@@ -34,6 +34,15 @@ static struct pm_api_info pm_api_list[] = {
PM_API(PM_GET_API_VERSION),
PM_API(PM_IOCTL),
PM_API(PM_QUERY_DATA),
+ PM_API(PM_CLOCK_ENABLE),
+ PM_API(PM_CLOCK_DISABLE),
+ PM_API(PM_CLOCK_GETSTATE),
+ PM_API(PM_CLOCK_SETDIVIDER),
+ PM_API(PM_CLOCK_GETDIVIDER),
+ PM_API(PM_CLOCK_SETRATE),
+ PM_API(PM_CLOCK_GETRATE),
+ PM_API(PM_CLOCK_SETPARENT),
+ PM_API(PM_CLOCK_GETPARENT),
};

/**
@@ -87,6 +96,7 @@ 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;
+ u64 rate;

if (!eemi_ops)
return -ENXIO;
@@ -132,6 +142,44 @@ static int process_api_request(u32 pm_id, u64 *pm_api_arg, u32 *pm_api_ret)
pm_api_ret[2], pm_api_ret[3]);
break;
}
+ case PM_CLOCK_ENABLE:
+ ret = eemi_ops->clock_enable(pm_api_arg[0]);
+ break;
+ case PM_CLOCK_DISABLE:
+ ret = eemi_ops->clock_disable(pm_api_arg[0]);
+ break;
+ case PM_CLOCK_GETSTATE:
+ ret = eemi_ops->clock_getstate(pm_api_arg[0], &pm_api_ret[0]);
+ if (!ret)
+ sprintf(debugfs_buf, "Clock state: %u\n",
+ pm_api_ret[0]);
+ break;
+ case PM_CLOCK_SETDIVIDER:
+ ret = eemi_ops->clock_setdivider(pm_api_arg[0], pm_api_arg[1]);
+ break;
+ case PM_CLOCK_GETDIVIDER:
+ ret = eemi_ops->clock_getdivider(pm_api_arg[0], &pm_api_ret[0]);
+ if (!ret)
+ sprintf(debugfs_buf, "Divider Value: %d\n",
+ pm_api_ret[0]);
+ break;
+ case PM_CLOCK_SETRATE:
+ ret = eemi_ops->clock_setrate(pm_api_arg[0], pm_api_arg[1]);
+ break;
+ case PM_CLOCK_GETRATE:
+ ret = eemi_ops->clock_getrate(pm_api_arg[0], &rate);
+ if (!ret)
+ sprintf(debugfs_buf, "Clock rate :%llu\n", rate);
+ break;
+ case PM_CLOCK_SETPARENT:
+ ret = eemi_ops->clock_setparent(pm_api_arg[0], pm_api_arg[1]);
+ break;
+ case PM_CLOCK_GETPARENT:
+ ret = eemi_ops->clock_getparent(pm_api_arg[0], &pm_api_ret[0]);
+ if (!ret)
+ sprintf(debugfs_buf,
+ "Clock parent Index: %u\n", pm_api_ret[0]);
+ break;
default:
sprintf(debugfs_buf, "Unsupported PM-API request\n");
ret = -EINVAL;
--
2.7.4
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