[PATCH v2] drm/amd/display: Docs improvement in /dc/inc/hw/mpc.h

[Akshay Behl <akshaybehl231@gmail.com>]

- After making the required changes

This patch fixes some of the warnings while building kernel Docs:
./drivers/gpu/drm/amd/display/dc/inc/hw/mpc.h:547: warning: Function parameter or struct member 'read_mpcc_state' not described in 'mpc_funcs'
./drivers/gpu/drm/amd/display/dc/inc/hw/mpc.h:547: warning: Function parameter or struct member 'mpc_init_single_inst' not described in 'mpc_funcs'
./drivers/gpu/drm/amd/display/dc/inc/hw/mpc.h:547: warning: Function parameter or struct member 'get_mpcc_for_dpp_from_secondary' not described in 'mpc_funcs'
./drivers/gpu/drm/amd/display/dc/inc/hw/mpc.h:547: warning: Function parameter or struct member 'get_mpcc_for_dpp' not described in 'mpc_funcs'
./drivers/gpu/drm/amd/display/dc/inc/hw/mpc.h:547: warning: Function parameter or struct member 'wait_for_idle' not described in 'mpc_funcs'
./drivers/gpu/drm/amd/display/dc/inc/hw/mpc.h:547: warning: Function parameter or struct member 'assert_mpcc_idle_before_connect' not described in 'mpc_funcs'

by adding descriptions to these struct members

Signed-off-by: Akshay Behl <akshaybehl231@gmail.com>
---
 drivers/gpu/drm/amd/display/dc/inc/hw/mpc.h | 84 ++++++++++++++++++++-
 1 file changed, 83 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/dc/inc/hw/mpc.h b/drivers/gpu/drm/amd/display/dc/inc/hw/mpc.h
index 34a398f23fc6..d2bea0a9699d 100644
--- a/drivers/gpu/drm/amd/display/dc/inc/hw/mpc.h
+++ b/drivers/gpu/drm/amd/display/dc/inc/hw/mpc.h
@@ -282,6 +282,21 @@ struct mpcc_state {
  * struct mpc_funcs - funcs
  */
 struct mpc_funcs {
+	/**
+	 * @read_mpcc_state:
+	 *
+	 * Read current state of a specified MPCC instance
+	 *
+	 * Parameters:
+	 *
+	 * - [in/out] mpc  - MPC context.
+	 * - [in] mpcc_inst - integer representing specific MPC instance
+	 * - [in/out] mpcc_state - MPCC state struct where read information will be stored
+	 *
+	 * Return:
+	 *
+	 * void
+	 */
 	void (*read_mpcc_state)(
 			struct mpc *mpc,
 			int mpcc_inst,
@@ -352,6 +367,21 @@ struct mpc_funcs {
 	 * void
 	 */
 	void (*mpc_init)(struct mpc *mpc);
+
+	/**
+	 * @mpc_init_single_inst:
+	 *
+	 * Reset the MPCC HW status of a single MPCC physical instance.
+	 *
+	 * Parameters:
+	 *
+	 * - [in/out] mpc - MPC context.
+	 * - [in] mpcc_id - The MPCC physical instance to use for blending.
+	 *
+	 * Return:
+	 *
+	 * void
+	 */
 	void (*mpc_init_single_inst)(
 			struct mpc *mpc,
 			unsigned int mpcc_id);
@@ -448,17 +478,69 @@ struct mpc_funcs {
 			struct mpc *mpc,
 			struct mpc_tree *tree,
 			struct mpcc *mpcc);
-
+	/**
+	 * @get_mpcc_for_dpp_from_secondary:
+	 *
+	 * Retrieve a specified MPCC struct from the 'secondary' MPC tree using the provided DPP id.
+	 *
+	 * Parameters:
+	 * - [in/out] tree - MPC tree structure that will be searched.
+	 * - [in]     dpp_id - DPP input for the MPCC.
+	 *
+	 * Return:
+	 *
+	 * struct mpcc* - MPCC that matched the input params
+	 */
 	struct mpcc* (*get_mpcc_for_dpp_from_secondary)(
 			struct mpc_tree *tree,
 			int dpp_id);
 
+	/**
+	 * @get_mpcc_for_dpp:
+	 *
+	 * Retrieve a specified MPCC struct from the MPC tree using the provided DPP id.
+	 *
+	 * Parameters:
+	 * - [in/out] tree - MPC tree structure that will be searched.
+	 * - [in]     dpp_id - DPP input for the MPCC.
+	 *
+	 * Return:
+	 *
+	 * struct mpcc* - MPCC that matched the input params
+	 */
+
 	struct mpcc* (*get_mpcc_for_dpp)(
 			struct mpc_tree *tree,
 			int dpp_id);
 
+	/**
+	 * @wait_for_idle:
+	 *
+	 * Wait for a specific MPCC instance to become idle
+	 *
+	 * Parameters:
+	 * - [in/out] mpc  - MPC context.
+	 * - [in]     id - ID of the MPCC instance to wait for
+	 *
+	 * Return:
+	 *
+	 * void
+	 */
 	void (*wait_for_idle)(struct mpc *mpc, int id);
 
+	/**
+	 * @assert_mpcc_idle_before_connect:
+	 *
+	 * Assert that the specific MPCC instance is ideal before attempting to connect.
+	 *
+	 * Parameters:
+	 * - [in/out] mpc  - MPC context.
+	 * - [in]     mpcc_id - ID of the MPCC instance to check for
+	 *
+	 * Return:
+	 *
+	 * void
+	 */
 	void (*assert_mpcc_idle_before_connect)(struct mpc *mpc, int mpcc_id);
 
 	void (*init_mpcc_list_from_hw)(
-- 
2.34.1