2016-03-07 17:00:53 +07:00
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/*
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* (C) COPYRIGHT 2016 ARM Limited. All rights reserved.
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* Author: Liviu Dudau <Liviu.Dudau@arm.com>
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*
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* This program is free software and is provided to you under the terms of the
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* GNU General Public License version 2 as published by the Free Software
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* Foundation, and any use by you of this program is subject to the terms
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* of such GNU licence.
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*
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* ARM Mali DP plane manipulation routines.
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*/
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#include <drm/drmP.h>
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#include <drm/drm_atomic_helper.h>
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#include <drm/drm_fb_cma_helper.h>
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#include <drm/drm_gem_cma_helper.h>
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#include <drm/drm_plane_helper.h>
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#include "malidp_hw.h"
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#include "malidp_drv.h"
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/* Layer specific register offsets */
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#define MALIDP_LAYER_FORMAT 0x000
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#define MALIDP_LAYER_CONTROL 0x004
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#define LAYER_ENABLE (1 << 0)
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#define LAYER_ROT_OFFSET 8
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#define LAYER_H_FLIP (1 << 10)
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#define LAYER_V_FLIP (1 << 11)
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#define LAYER_ROT_MASK (0xf << 8)
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#define MALIDP_LAYER_SIZE 0x00c
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#define LAYER_H_VAL(x) (((x) & 0x1fff) << 0)
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#define LAYER_V_VAL(x) (((x) & 0x1fff) << 16)
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#define MALIDP_LAYER_COMP_SIZE 0x010
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#define MALIDP_LAYER_OFFSET 0x014
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#define MALIDP_LAYER_STRIDE 0x018
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static void malidp_de_plane_destroy(struct drm_plane *plane)
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{
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struct malidp_plane *mp = to_malidp_plane(plane);
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if (mp->base.fb)
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drm_framebuffer_unreference(mp->base.fb);
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drm_plane_helper_disable(plane);
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drm_plane_cleanup(plane);
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devm_kfree(plane->dev->dev, mp);
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}
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struct drm_plane_state *malidp_duplicate_plane_state(struct drm_plane *plane)
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{
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struct malidp_plane_state *state, *m_state;
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if (!plane->state)
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return NULL;
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state = kmalloc(sizeof(*state), GFP_KERNEL);
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if (state) {
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m_state = to_malidp_plane_state(plane->state);
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__drm_atomic_helper_plane_duplicate_state(plane, &state->base);
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state->rotmem_size = m_state->rotmem_size;
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}
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return &state->base;
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}
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void malidp_destroy_plane_state(struct drm_plane *plane,
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struct drm_plane_state *state)
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{
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struct malidp_plane_state *m_state = to_malidp_plane_state(state);
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__drm_atomic_helper_plane_destroy_state(state);
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kfree(m_state);
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}
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static const struct drm_plane_funcs malidp_de_plane_funcs = {
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.update_plane = drm_atomic_helper_update_plane,
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.disable_plane = drm_atomic_helper_disable_plane,
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.destroy = malidp_de_plane_destroy,
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.reset = drm_atomic_helper_plane_reset,
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.atomic_duplicate_state = malidp_duplicate_plane_state,
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.atomic_destroy_state = malidp_destroy_plane_state,
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};
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static int malidp_de_plane_check(struct drm_plane *plane,
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struct drm_plane_state *state)
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{
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struct malidp_plane *mp = to_malidp_plane(plane);
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struct malidp_plane_state *ms = to_malidp_plane_state(state);
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2016-10-11 21:26:05 +07:00
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struct drm_framebuffer *fb;
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int n_planes, i;
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2016-03-07 17:00:53 +07:00
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u8 format_id;
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u32 src_w, src_h;
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if (!state->crtc || !state->fb)
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return 0;
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2016-10-11 21:26:05 +07:00
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fb = state->fb;
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2016-03-07 17:00:53 +07:00
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format_id = malidp_hw_get_format_id(&mp->hwdev->map, mp->layer->id,
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2016-10-11 21:26:05 +07:00
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fb->pixel_format);
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2016-03-07 17:00:53 +07:00
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if (format_id == MALIDP_INVALID_FORMAT_ID)
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return -EINVAL;
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2016-10-11 21:26:05 +07:00
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n_planes = drm_format_num_planes(fb->pixel_format);
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for (i = 0; i < n_planes; i++) {
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if (!malidp_hw_pitch_valid(mp->hwdev, fb->pitches[i])) {
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DRM_DEBUG_KMS("Invalid pitch %u for plane %d\n",
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fb->pitches[i], i);
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return -EINVAL;
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}
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}
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2016-03-07 17:00:53 +07:00
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src_w = state->src_w >> 16;
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src_h = state->src_h >> 16;
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if ((state->crtc_w > mp->hwdev->max_line_size) ||
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(state->crtc_h > mp->hwdev->max_line_size) ||
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(state->crtc_w < mp->hwdev->min_line_size) ||
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(state->crtc_h < mp->hwdev->min_line_size) ||
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(state->crtc_w != src_w) || (state->crtc_h != src_h))
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return -EINVAL;
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/* packed RGB888 / BGR888 can't be rotated or flipped */
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2016-07-29 12:50:05 +07:00
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if (state->rotation != DRM_ROTATE_0 &&
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2016-03-07 17:00:53 +07:00
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(state->fb->pixel_format == DRM_FORMAT_RGB888 ||
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state->fb->pixel_format == DRM_FORMAT_BGR888))
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return -EINVAL;
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ms->rotmem_size = 0;
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if (state->rotation & MALIDP_ROTATED_MASK) {
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int val;
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val = mp->hwdev->rotmem_required(mp->hwdev, state->crtc_h,
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state->crtc_w,
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state->fb->pixel_format);
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if (val < 0)
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return val;
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ms->rotmem_size = val;
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}
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return 0;
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}
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static void malidp_de_plane_update(struct drm_plane *plane,
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struct drm_plane_state *old_state)
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{
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struct drm_gem_cma_object *obj;
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struct malidp_plane *mp;
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const struct malidp_hw_regmap *map;
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u8 format_id;
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u16 ptr;
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u32 format, src_w, src_h, dest_w, dest_h, val = 0;
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int num_planes, i;
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mp = to_malidp_plane(plane);
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map = &mp->hwdev->map;
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format = plane->state->fb->pixel_format;
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format_id = malidp_hw_get_format_id(map, mp->layer->id, format);
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num_planes = drm_format_num_planes(format);
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/* convert src values from Q16 fixed point to integer */
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src_w = plane->state->src_w >> 16;
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src_h = plane->state->src_h >> 16;
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if (plane->state->rotation & MALIDP_ROTATED_MASK) {
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dest_w = plane->state->crtc_h;
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dest_h = plane->state->crtc_w;
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} else {
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dest_w = plane->state->crtc_w;
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dest_h = plane->state->crtc_h;
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}
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malidp_hw_write(mp->hwdev, format_id, mp->layer->base);
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for (i = 0; i < num_planes; i++) {
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/* calculate the offset for the layer's plane registers */
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ptr = mp->layer->ptr + (i << 4);
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obj = drm_fb_cma_get_gem_obj(plane->state->fb, i);
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malidp_hw_write(mp->hwdev, lower_32_bits(obj->paddr), ptr);
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malidp_hw_write(mp->hwdev, upper_32_bits(obj->paddr), ptr + 4);
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malidp_hw_write(mp->hwdev, plane->state->fb->pitches[i],
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mp->layer->base + MALIDP_LAYER_STRIDE);
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}
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malidp_hw_write(mp->hwdev, LAYER_H_VAL(src_w) | LAYER_V_VAL(src_h),
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mp->layer->base + MALIDP_LAYER_SIZE);
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malidp_hw_write(mp->hwdev, LAYER_H_VAL(dest_w) | LAYER_V_VAL(dest_h),
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mp->layer->base + MALIDP_LAYER_COMP_SIZE);
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malidp_hw_write(mp->hwdev, LAYER_H_VAL(plane->state->crtc_x) |
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LAYER_V_VAL(plane->state->crtc_y),
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mp->layer->base + MALIDP_LAYER_OFFSET);
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/* first clear the rotation bits in the register */
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malidp_hw_clearbits(mp->hwdev, LAYER_ROT_MASK,
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mp->layer->base + MALIDP_LAYER_CONTROL);
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/* setup the rotation and axis flip bits */
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if (plane->state->rotation & DRM_ROTATE_MASK)
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val = ilog2(plane->state->rotation & DRM_ROTATE_MASK) << LAYER_ROT_OFFSET;
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2016-07-29 12:50:05 +07:00
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if (plane->state->rotation & DRM_REFLECT_X)
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2016-03-07 17:00:53 +07:00
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val |= LAYER_V_FLIP;
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2016-07-29 12:50:05 +07:00
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if (plane->state->rotation & DRM_REFLECT_Y)
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2016-03-07 17:00:53 +07:00
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val |= LAYER_H_FLIP;
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/* set the 'enable layer' bit */
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val |= LAYER_ENABLE;
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malidp_hw_setbits(mp->hwdev, val,
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mp->layer->base + MALIDP_LAYER_CONTROL);
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}
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static void malidp_de_plane_disable(struct drm_plane *plane,
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struct drm_plane_state *state)
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{
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struct malidp_plane *mp = to_malidp_plane(plane);
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malidp_hw_clearbits(mp->hwdev, LAYER_ENABLE,
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mp->layer->base + MALIDP_LAYER_CONTROL);
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}
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static const struct drm_plane_helper_funcs malidp_de_plane_helper_funcs = {
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.atomic_check = malidp_de_plane_check,
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.atomic_update = malidp_de_plane_update,
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.atomic_disable = malidp_de_plane_disable,
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};
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int malidp_de_planes_init(struct drm_device *drm)
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{
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struct malidp_drm *malidp = drm->dev_private;
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const struct malidp_hw_regmap *map = &malidp->dev->map;
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struct malidp_plane *plane = NULL;
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enum drm_plane_type plane_type;
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unsigned long crtcs = 1 << drm->mode_config.num_crtc;
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2016-10-11 21:26:07 +07:00
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unsigned long flags = DRM_ROTATE_0 | DRM_ROTATE_90 | DRM_ROTATE_180 |
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DRM_ROTATE_270 | DRM_REFLECT_X | DRM_REFLECT_Y;
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2016-03-07 17:00:53 +07:00
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u32 *formats;
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int ret, i, j, n;
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formats = kcalloc(map->n_input_formats, sizeof(*formats), GFP_KERNEL);
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if (!formats) {
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ret = -ENOMEM;
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goto cleanup;
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}
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for (i = 0; i < map->n_layers; i++) {
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u8 id = map->layers[i].id;
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plane = kzalloc(sizeof(*plane), GFP_KERNEL);
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if (!plane) {
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ret = -ENOMEM;
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goto cleanup;
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}
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/* build the list of DRM supported formats based on the map */
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for (n = 0, j = 0; j < map->n_input_formats; j++) {
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if ((map->input_formats[j].layer & id) == id)
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formats[n++] = map->input_formats[j].format;
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}
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plane_type = (i == 0) ? DRM_PLANE_TYPE_PRIMARY :
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DRM_PLANE_TYPE_OVERLAY;
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ret = drm_universal_plane_init(drm, &plane->base, crtcs,
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&malidp_de_plane_funcs, formats,
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n, plane_type, NULL);
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if (ret < 0)
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goto cleanup;
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drm_plane_helper_add(&plane->base,
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&malidp_de_plane_helper_funcs);
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plane->hwdev = malidp->dev;
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plane->layer = &map->layers[i];
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2016-10-11 21:26:07 +07:00
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/* Skip the features which the SMART layer doesn't have */
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if (id == DE_SMART)
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continue;
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drm_plane_create_rotation_property(&plane->base, DRM_ROTATE_0, flags);
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2016-03-07 17:00:53 +07:00
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}
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kfree(formats);
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return 0;
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cleanup:
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malidp_de_planes_destroy(drm);
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kfree(formats);
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return ret;
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}
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void malidp_de_planes_destroy(struct drm_device *drm)
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{
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struct drm_plane *p, *pt;
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list_for_each_entry_safe(p, pt, &drm->mode_config.plane_list, head) {
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drm_plane_cleanup(p);
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kfree(p);
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}
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}
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