msm: sde: add inline rotation support to sde rotator

- clocks:		List of Phandles for clock device nodes

			needed by the device.

- clock-names:		List of clock names needed by the device.

- #list-cells:		Number of rotator cells, must be 1

Bus Scaling Data:

- qcom,msm-bus,name:		String property describing rotator client.

- qcom,msm-bus,num-cases:	This is the the number of Bus Scaling use cases

				  priority for rotator clients.

- qcom,mdss-rot-mode:		This is integer value indicates operation mode

				of the rotator device

- qcom,mdss-sbuf-headroom:	This integer value indicates stream buffer headroom in lines.

- cache-slice-names:		A set of names that identify the usecase names of a client that uses

				cache slice. These strings are used to look up the cache slice

				entries by name.

- cache-slices:			The tuple has phandle to llcc device as the first argument and the

				second argument is the usecase id of the client.

Subnode properties:

- compatible:		Compatible name used in smmu v2.

		reg = <0xfd900000 0x22100>,

			<0xfd925000 0x1000>;

		reg-names = "mdp_phys", "rot_vbif_phys";

		#list-cells = <1>;

		interrupt-parent = <&mdss_mdp>;

		interrupts = <2 0>;

		qcom,mdss-default-ot-rd-limit = <8>;

		qcom,mdss-default-ot-wr-limit = <16>;

		qcom,mdss-sbuf-headroom = <20>;

		cache-slice-names = "rotator";

		cache-slices = <&llcc 3>;

		smmu_rot_unsec: qcom,smmu_rot_unsec_cb {

			compatible = "qcom,smmu_sde_rot_unsec";

			iommus = <&mdp_smmu 0xe00>;

 * @SDE_CAPS_R1_WB: MDSS V1.x WB block

 * @SDE_CAPS_R3_WB: MDSS V3.x WB block

 * @SDE_CAPS_R3_1P5_DOWNSCALE: 1.5x downscale rotator support

 * @SDE_CAPS_SBUF_1: stream buffer support for inline rotation

 */

enum sde_caps_settings {

	SDE_CAPS_R1_WB,

	SDE_CAPS_R3_WB,

	SDE_CAPS_R3_1P5_DOWNSCALE,

	SDE_CAPS_SEC_ATTACH_DETACH_SMMU,

	SDE_CAPS_SBUF_1,

	SDE_CAPS_MAX,

};

	if (!input)

		dir = DMA_FROM_DEVICE;

	data->sbuf = buffer->sbuf;

	data->scid = buffer->scid;

	data->writeback = buffer->writeback;

	memset(planes, 0, sizeof(planes));

	for (i = 0; i < buffer->plane_count; i++) {

		planes[i].offset = buffer->planes[i].offset;

		planes[i].buffer = buffer->planes[i].buffer;

		planes[i].handle = buffer->planes[i].handle;

		planes[i].addr = buffer->planes[i].addr;

		planes[i].len = buffer->planes[i].len;

	}

	ret =  sde_mdp_data_get_and_validate_size(data, planes,

	if (entry->item.flags & SDE_ROTATION_EXT_DMA_BUF)

		flag |= SDE_ROT_EXT_DMA_BUF;

	if (entry->item.flags & SDE_ROTATION_EXT_IOVA)

		flag |= SDE_ROT_EXT_IOVA;

	if (entry->item.flags & SDE_ROTATION_SECURE_CAMERA)

		flag |= SDE_SECURE_CAMERA_SESSION;

			entry->perf->wrot_limit != mgr->wrot_limit))

		return true;

	/* sbuf mode is exclusive and may impact queued entries */

	if (!mgr->sbuf_ctx && entry->perf && entry->perf->config.output.sbuf)

		return true;

	return false;

}

				entry->item.session_id,

				entry->item.sequence_id);

		return sde_rotator_is_hw_idle(mgr, hw);

	} else if (mgr->sbuf_ctx && mgr->sbuf_ctx != entry->private) {

		SDEROT_DBG("wait until sbuf mode is off\n");

		return false;

	} else {

		return (atomic_read(&hw->num_active) < hw->max_active);

	}

			entry->item.session_id, entry->item.sequence_id);

	mgr->rdot_limit = entry->perf->rdot_limit;

	mgr->wrot_limit = entry->perf->wrot_limit;

	if (!mgr->sbuf_ctx && entry->perf->config.output.sbuf) {

		SDEROT_DBG("acquire sbuf s:%d.%d\n", entry->item.session_id,

				entry->item.sequence_id);

		SDEROT_EVTLOG(entry->item.session_id, entry->item.sequence_id);

		mgr->sbuf_ctx = entry->private;

	}

	return hw;

}

	if ((in_fmt->is_yuv != out_fmt->is_yuv) ||

		(in_fmt->pixel_mode != out_fmt->pixel_mode) ||

		(in_fmt->unpack_tight != out_fmt->unpack_tight)) {

		SDEROT_ERR("Rotator does not support CSC\n");

		SDEROT_ERR(

			"Rotator does not support CSC yuv:%d/%d pm:%d/%d ut:%d/%d\n",

			in_fmt->is_yuv, out_fmt->is_yuv,

			in_fmt->pixel_mode, out_fmt->pixel_mode,

			in_fmt->unpack_tight, out_fmt->unpack_tight);

		goto verify_error;

	}

	return ret;

}

/*

 * sde_rotator_commit_request - commit the request to hardware

 * @mgr: pointer to rotator manager

 * @private: pointer to per file context

 * @req: pointer to rotation request

 *

 * This differs from sde_rotator_queue_request in that this

 * function will wait until request is committed to hardware.

 */

void sde_rotator_commit_request(struct sde_rot_mgr *mgr,

	struct sde_rot_file_private *ctx,

	struct sde_rot_entry_container *req)

{

	int i;

	if (!mgr || !ctx || !req || !req->entries) {

		SDEROT_ERR("null parameters\n");

		return;

	}

	sde_rotator_queue_request(mgr, ctx, req);

	sde_rot_mgr_unlock(mgr);

	for (i = 0; i < req->count; i++)

		flush_work(&req->entries[i].commit_work);

	sde_rot_mgr_lock(mgr);

}

static int sde_rotator_open_session(struct sde_rot_mgr *mgr,

	struct sde_rot_file_private *private, u32 session_id)

{

	sde_rotator_update_clk(mgr);

	sde_rotator_resource_ctrl(mgr, false);

done:

	if (mgr->sbuf_ctx == private) {

		SDEROT_DBG("release sbuf session id:%u\n", id);

		SDEROT_EVTLOG(id);

		mgr->sbuf_ctx = NULL;

	}

	SDEROT_DBG("Closed session id:%u\n", id);

	return 0;

}

		goto done;

	}

	if (config->output.sbuf && mgr->sbuf_ctx != private && mgr->sbuf_ctx) {

		SDEROT_ERR("too many sbuf sessions\n");

		goto done;

	}

	SDEROT_DBG(

		"reconfig session id=%u in{%u,%u}f:%u out{%u,%u}f:%u fps:%d clk:%lu, bw:%llu\n",

		config->session_id, config->input.width, config->input.height,

/* secure camera operation*/

#define SDE_ROTATION_SECURE_CAMERA	0x40000

/* use client mapped i/o virtual address */

#define SDE_ROTATION_EXT_IOVA		0x80000

/**********************************************************************

 * configuration structures

 **********************************************************************/

 * @height: height of buffer region to be processed

 * @format: pixel format of buffer

 * @comp_ratio: compression ratio for the session

 * @sbuf: true if buffer is streaming buffer

 */

struct sde_rotation_buf_info {

	uint32_t width;

	uint32_t height;

	uint32_t format;

	struct sde_mult_factor comp_ratio;

	bool sbuf;

};

/*

	SDE_ROTATOR_CLK_MAX

};

enum sde_rotator_trigger {

	SDE_ROTATOR_TRIGGER_IMMEDIATE,

	SDE_ROTATOR_TRIGGER_VIDEO,

	SDE_ROTATOR_TRIGGER_COMMAND,

};

struct sde_rotation_item {

	/* rotation request flag */

	uint32_t	flags;

	/* rotation trigger mode */

	uint32_t	trigger;

	/* Source crop rectangle */

	struct sde_rect	src_rect;

struct sde_rot_mgr;

struct sde_rot_file_private;

/*

 * struct sde_rot_entry - rotation entry

 * @item: rotation item

 * @commit_work: work descriptor for commit handler

 * @done_work: work descriptor for done handler

 * @commitq: pointer to commit handler rotator queue

 * @fenceq: pointer to fence signaling rotator queue

 * @doneq: pointer to done handler rotator queue

 * @request: pointer to containing request

 * @src_buf: descriptor of source buffer

 * @dst_buf: descriptor of destination buffer

 * @input_fence: pointer to input fence for when input content is available

 * @output_fence: pointer to output fence for when output content is available

 * @output_signaled: true if output fence of this entry has been signaled

 * @dnsc_factor_w: calculated width downscale factor for this entry

 * @dnsc_factor_w: calculated height downscale factor for this entry

 * @perf: pointer to performance configuration associated with this entry

 * @work_assigned: true if this item is assigned to h/w queue/unit

 * @private: pointer to controlling session context

 */

struct sde_rot_entry {

	struct sde_rotation_item item;

	struct work_struct commit_work;

	struct sde_rot_file_private *private;

};

/*

 * struct sde_rot_perf - rotator session performance configuration

 * @list: list of performance configuration under one session

 * @config: current rotation configuration

 * @clk_rate: current clock rate in Hz

 * @bw: current bandwidth in byte per second

 * @work_dis_lock: serialization lock for updating work distribution (not used)

 * @work_distribution: work distribution among multiple hardware queue/unit

 * @last_wb_idx: last queue/unit index, used to account for pre-distributed work

 * @rdot_limit: read OT limit of this session

 * @wrot_limit: write OT limit of this session

 */

struct sde_rot_perf {

	struct list_head list;

	struct sde_rotation_config config;

	u32 wrot_limit;

};

/*

 * struct sde_rot_file_private - rotator manager per session context

 * @list: list of all session context

 * @req_list: list of rotation request for this session

 * @perf_list: list of performance configuration for this session (only one)

 * @mgr: pointer to the controlling rotator manager

 * @fenceq: pointer to rotator queue to signal when entry is done

 */

struct sde_rot_file_private {

	struct list_head list;

	struct list_head req_list;

	struct sde_rot_queue *fenceq;

};

/*

 * struct sde_rot_bus_data_type - rotator bus scaling configuration

 * @bus_cale_pdata: pointer to bus scaling configuration table

 * @bus_hdl: msm bus scaling handle

 * @curr_bw_uc_idx; current usecase index into configuration table

 * @curr_quota_val: current bandwidth request in byte per second

 */

struct sde_rot_bus_data_type {

	struct msm_bus_scale_pdata *bus_scale_pdata;

	u32 bus_hdl;

	u64 curr_quota_val;

};

/*

 * struct sde_rot_mgr - core rotator manager

 * @lock: serialization lock to rotator manager functions

 * @device_suspended: 0 if device is not suspended; non-zero suspended

 * @pdev: pointer to controlling platform device

 * @device: pointer to controlling device

 * @queue_count: number of hardware queue/unit available

 * @commitq: array of rotator commit queue corresponding to hardware queue

 * @doneq: array of rotator done queue corresponding to hardware queue

 * @file_list: list of all sessions managed by rotator manager

 * @pending_close_bw_vote: bandwidth of closed sessions with pending work

 * @data_bus: data bus configuration state

 * @reg_bus: register bus configuration state

 * @module_power: power/clock configuration state

 * @regulator_enable: true if foot switch is enabled; false otherwise

 * @res_ref_cnt: reference count of how many times resource is requested

 * @rot_enable_clk_cnt: reference count of how many times clock is requested

 * @rot_clk: array of rotator and periphery clocks

 * @num_rot_clk: size of the rotator clock array

 * @rdot_limit: current read OT limit

 * @wrot_limit: current write OT limit

 * @hwacquire_timeout: maximum wait time for hardware availability in msec

 * @pixel_per_clk: rotator hardware performance in pixel for clock

 * @fudge_factor: fudge factor for clock calculation

 * @overhead: software overhead for offline rotation in msec

 * @sbuf_ctx: pointer to sbuf session context

 * @ops_xxx: function pointers of rotator HAL layer

 * @hw_data: private handle of rotator HAL layer

 */

struct sde_rot_mgr {

	struct mutex lock;

	atomic_t device_suspended;

	struct sde_mult_factor fudge_factor;

	struct sde_mult_factor overhead;

	struct sde_rot_file_private *sbuf_ctx;

	int (*ops_config_hw)(struct sde_rot_hw_resource *hw,

			struct sde_rot_entry *entry);

	int (*ops_kickoff_entry)(struct sde_rot_hw_resource *hw,

			bool input);

	int (*ops_hw_is_valid_pixfmt)(struct sde_rot_mgr *mgr, u32 pixfmt,

			bool input);

	int (*ops_hw_get_downscale_caps)(struct sde_rot_mgr *mgr, char *caps,

			int len);

	void *hw_data;

};

	return 0;

}

static inline int sde_rotator_get_downscale_caps(struct sde_rot_mgr *mgr,

		char *caps, int len)

{

	if (mgr && mgr->ops_hw_get_downscale_caps)

		return mgr->ops_hw_get_downscale_caps(mgr, caps, len);

	return 0;

}

static inline int __compare_session_item_rect(

	struct sde_rotation_buf_info *s_rect,

	struct sde_rect *i_rect, uint32_t i_fmt, bool src)

	struct sde_rot_file_private *ctx,

	struct sde_rot_entry_container *req);

/*

 * sde_rotator_commit_request - queue/schedule the given request and wait

 *	until h/w commit

 * @rot_dev: Pointer to rotator device

 * @private: Pointer to rotator manager per file context

 * @req: Pointer to rotation request

 * return: 0 if success; error code otherwise

 */

void sde_rotator_commit_request(struct sde_rot_mgr *mgr,

	struct sde_rot_file_private *ctx,

	struct sde_rot_entry_container *req);

/*

 * sde_rotator_verify_config_all - verify given rotation configuration

 * @rot_dev: Pointer to rotator device

		return NULL;

	}

	if (!debugfs_create_u32("disable_syscache", 0644,

			debugfs_root, &rot_dev->disable_syscache)) {

		SDEROT_ERR("fail create disable_syscache\n");

		debugfs_remove_recursive(debugfs_root);

		return NULL;

	}

	if (!debugfs_create_u32("streamoff_timeout", 0644,

			debugfs_root, &rot_dev->streamoff_timeout)) {

		SDEROT_ERR("fail create streamoff_timeout\n");