diff options
| author | Rajan Vaja <rajan.vaja@xilinx.com> | 2018-10-08 11:21:44 -0700 |
|---|---|---|
| committer | Michal Simek <michal.simek@xilinx.com> | 2018-10-09 13:26:21 +0200 |
| commit | 3b0296b8c893adb17b422179b9e779e4c32aa347 (patch) | |
| tree | 81fe6d6d0ff3a833097c5cfe11442a4037bf7b07 | |
| parent | 8cc7bc8ee21f539ffabf4ff7f30a0c6be9ac5ba9 (diff) | |
firmware: xilinx: Add zynqmp IOCTL API for device control
Add ZynqMP firmware IOCTL API to control and configure
devices like PLLs, SD, Gem, etc.
Signed-off-by: Rajan Vaja <rajan.vaja@xilinx.com>
Signed-off-by: Jolly Shah <jollys@xilinx.com>
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
| -rw-r--r-- | drivers/firmware/xilinx/zynqmp.c | 42 | ||||
| -rw-r--r-- | include/linux/firmware/xlnx-zynqmp.h | 4 |
2 files changed, 45 insertions, 1 deletions
diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c index 84b3fd2eca8b..9a1c72a9280f 100644 --- a/drivers/firmware/xilinx/zynqmp.c +++ b/drivers/firmware/xilinx/zynqmp.c @@ -428,6 +428,47 @@ static int zynqmp_pm_clock_getparent(u32 clock_id, u32 *parent_id) return ret; } +/** + * zynqmp_is_valid_ioctl() - Check whether IOCTL ID is valid or not + * @ioctl_id: IOCTL ID + * + * Return: 1 if IOCTL is valid else 0 + */ +static inline int zynqmp_is_valid_ioctl(u32 ioctl_id) +{ + 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; + } +} + +/** + * 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 + * + * This function calls IOCTL to firmware for device control and configuration. + * + * 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) +{ + if (!zynqmp_is_valid_ioctl(ioctl_id)) + return -EINVAL; + + return zynqmp_pm_invoke_fn(PM_IOCTL, node_id, ioctl_id, + arg1, arg2, out); +} + static const struct zynqmp_eemi_ops eemi_ops = { .get_api_version = zynqmp_pm_get_api_version, .query_data = zynqmp_pm_query_data, @@ -440,6 +481,7 @@ static const struct zynqmp_eemi_ops eemi_ops = { .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 015e130431e6..7a9db0861803 100644 --- a/include/linux/firmware/xlnx-zynqmp.h +++ b/include/linux/firmware/xlnx-zynqmp.h @@ -34,7 +34,8 @@ enum pm_api_id { PM_GET_API_VERSION = 1, - PM_QUERY_DATA = 35, + PM_IOCTL = 34, + PM_QUERY_DATA, PM_CLOCK_ENABLE, PM_CLOCK_DISABLE, PM_CLOCK_GETSTATE, @@ -99,6 +100,7 @@ struct zynqmp_eemi_ops { 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); }; #if IS_REACHABLE(CONFIG_ARCH_ZYNQMP) |