vsp1_drv.c revision f2226a33bf9a431f616b435aa10a9ad4fea1d042
126e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart/* 226e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart * vsp1_drv.c -- R-Car VSP1 Driver 326e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart * 426e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart * Copyright (C) 2013 Renesas Corporation 526e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart * 626e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com) 726e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart * 826e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart * This program is free software; you can redistribute it and/or modify 926e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart * it under the terms of the GNU General Public License as published by 1026e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart * the Free Software Foundation; either version 2 of the License, or 1126e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart * (at your option) any later version. 1226e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart */ 1326e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 1426e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart#include <linux/clk.h> 1526e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart#include <linux/delay.h> 1626e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart#include <linux/device.h> 1726e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart#include <linux/interrupt.h> 1826e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart#include <linux/module.h> 1926e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart#include <linux/platform_device.h> 2026e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart#include <linux/videodev2.h> 2126e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 2226e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart#include "vsp1.h" 2326e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart#include "vsp1_lif.h" 2426e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart#include "vsp1_rwpf.h" 2526e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart#include "vsp1_uds.h" 2626e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 2726e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart/* ----------------------------------------------------------------------------- 2826e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart * Interrupt Handling 2926e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart */ 3026e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 3126e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchartstatic irqreturn_t vsp1_irq_handler(int irq, void *data) 3226e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart{ 3326e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart u32 mask = VI6_WFP_IRQ_STA_DFE | VI6_WFP_IRQ_STA_FRE; 3426e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart struct vsp1_device *vsp1 = data; 3526e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart irqreturn_t ret = IRQ_NONE; 3626e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart unsigned int i; 3726e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 3883453a7cc8b703ce818c24c2298822b0b179e652Katsuya Matsubara for (i = 0; i < vsp1->pdata->wpf_count; ++i) { 3926e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart struct vsp1_rwpf *wpf = vsp1->wpf[i]; 4026e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart struct vsp1_pipeline *pipe; 4126e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart u32 status; 4226e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 4326e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart if (wpf == NULL) 4426e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart continue; 4526e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 4626e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart pipe = to_vsp1_pipeline(&wpf->entity.subdev.entity); 4726e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart status = vsp1_read(vsp1, VI6_WPF_IRQ_STA(i)); 4826e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart vsp1_write(vsp1, VI6_WPF_IRQ_STA(i), ~status & mask); 4926e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 5026e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart if (status & VI6_WFP_IRQ_STA_FRE) { 5126e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart vsp1_pipeline_frame_end(pipe); 5226e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart ret = IRQ_HANDLED; 5326e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart } 5426e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart } 5526e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 5626e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart return ret; 5726e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart} 5826e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 5926e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart/* ----------------------------------------------------------------------------- 6026e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart * Entities 6126e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart */ 6226e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 6326e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart/* 6426e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart * vsp1_create_links - Create links from all sources to the given sink 6526e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart * 6626e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart * This function creates media links from all valid sources to the given sink 6726e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart * pad. Links that would be invalid according to the VSP1 hardware capabilities 6826e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart * are skipped. Those include all links 6926e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart * 7026e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart * - from a UDS to a UDS (UDS entities can't be chained) 7126e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart * - from an entity to itself (no loops are allowed) 7226e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart */ 7326e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchartstatic int vsp1_create_links(struct vsp1_device *vsp1, struct vsp1_entity *sink) 7426e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart{ 7526e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart struct media_entity *entity = &sink->subdev.entity; 7626e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart struct vsp1_entity *source; 7726e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart unsigned int pad; 7826e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart int ret; 7926e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 8026e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart list_for_each_entry(source, &vsp1->entities, list_dev) { 8126e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart u32 flags; 8226e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 8326e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart if (source->type == sink->type) 8426e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart continue; 8526e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 8626e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart if (source->type == VSP1_ENTITY_LIF || 8726e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart source->type == VSP1_ENTITY_WPF) 8826e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart continue; 8926e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 9026e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart flags = source->type == VSP1_ENTITY_RPF && 9126e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart sink->type == VSP1_ENTITY_WPF && 9226e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart source->index == sink->index 9326e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart ? MEDIA_LNK_FL_ENABLED : 0; 9426e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 9526e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart for (pad = 0; pad < entity->num_pads; ++pad) { 9626e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart if (!(entity->pads[pad].flags & MEDIA_PAD_FL_SINK)) 9726e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart continue; 9826e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 9926e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart ret = media_entity_create_link(&source->subdev.entity, 10026e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart source->source_pad, 10126e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart entity, pad, flags); 10226e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart if (ret < 0) 10326e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart return ret; 104db32eb6c18d7617e61ca65eb13b66de4dea56f1fKatsuya Matsubara 105db32eb6c18d7617e61ca65eb13b66de4dea56f1fKatsuya Matsubara if (flags & MEDIA_LNK_FL_ENABLED) 106db32eb6c18d7617e61ca65eb13b66de4dea56f1fKatsuya Matsubara source->sink = entity; 10726e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart } 10826e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart } 10926e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 11026e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart return 0; 11126e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart} 11226e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 11326e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchartstatic void vsp1_destroy_entities(struct vsp1_device *vsp1) 11426e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart{ 11526e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart struct vsp1_entity *entity; 11626e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart struct vsp1_entity *next; 11726e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 11826e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart list_for_each_entry_safe(entity, next, &vsp1->entities, list_dev) { 11926e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart list_del(&entity->list_dev); 12026e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart vsp1_entity_destroy(entity); 12126e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart } 12226e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 12326e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart v4l2_device_unregister(&vsp1->v4l2_dev); 12426e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart media_device_unregister(&vsp1->media_dev); 12526e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart} 12626e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 12726e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchartstatic int vsp1_create_entities(struct vsp1_device *vsp1) 12826e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart{ 12926e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart struct media_device *mdev = &vsp1->media_dev; 13026e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart struct v4l2_device *vdev = &vsp1->v4l2_dev; 13126e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart struct vsp1_entity *entity; 13226e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart unsigned int i; 13326e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart int ret; 13426e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 13526e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart mdev->dev = vsp1->dev; 13626e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart strlcpy(mdev->model, "VSP1", sizeof(mdev->model)); 13710d79b995be5399be0a59a72859ac4bfdf066299Laurent Pinchart snprintf(mdev->bus_info, sizeof(mdev->bus_info), "platform:%s", 13810d79b995be5399be0a59a72859ac4bfdf066299Laurent Pinchart dev_name(mdev->dev)); 13926e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart ret = media_device_register(mdev); 14026e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart if (ret < 0) { 14126e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart dev_err(vsp1->dev, "media device registration failed (%d)\n", 14226e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart ret); 14326e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart return ret; 14426e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart } 14526e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 14626e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart vdev->mdev = mdev; 14726e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart ret = v4l2_device_register(vsp1->dev, vdev); 14826e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart if (ret < 0) { 14926e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart dev_err(vsp1->dev, "V4L2 device registration failed (%d)\n", 15026e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart ret); 15126e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart goto done; 15226e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart } 15326e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 15426e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart /* Instantiate all the entities. */ 15526e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart if (vsp1->pdata->features & VSP1_HAS_LIF) { 15626e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart vsp1->lif = vsp1_lif_create(vsp1); 15726e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart if (IS_ERR(vsp1->lif)) { 15826e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart ret = PTR_ERR(vsp1->lif); 15926e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart goto done; 16026e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart } 16126e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 16226e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart list_add_tail(&vsp1->lif->entity.list_dev, &vsp1->entities); 16326e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart } 16426e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 16526e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart for (i = 0; i < vsp1->pdata->rpf_count; ++i) { 16626e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart struct vsp1_rwpf *rpf; 16726e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 16826e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart rpf = vsp1_rpf_create(vsp1, i); 16926e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart if (IS_ERR(rpf)) { 17026e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart ret = PTR_ERR(rpf); 17126e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart goto done; 17226e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart } 17326e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 17426e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart vsp1->rpf[i] = rpf; 17526e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart list_add_tail(&rpf->entity.list_dev, &vsp1->entities); 17626e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart } 17726e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 17826e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart for (i = 0; i < vsp1->pdata->uds_count; ++i) { 17926e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart struct vsp1_uds *uds; 18026e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 18126e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart uds = vsp1_uds_create(vsp1, i); 18226e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart if (IS_ERR(uds)) { 18326e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart ret = PTR_ERR(uds); 18426e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart goto done; 18526e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart } 18626e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 18726e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart vsp1->uds[i] = uds; 18826e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart list_add_tail(&uds->entity.list_dev, &vsp1->entities); 18926e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart } 19026e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 19126e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart for (i = 0; i < vsp1->pdata->wpf_count; ++i) { 19226e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart struct vsp1_rwpf *wpf; 19326e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 19426e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart wpf = vsp1_wpf_create(vsp1, i); 19526e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart if (IS_ERR(wpf)) { 19626e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart ret = PTR_ERR(wpf); 19726e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart goto done; 19826e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart } 19926e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 20026e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart vsp1->wpf[i] = wpf; 20126e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart list_add_tail(&wpf->entity.list_dev, &vsp1->entities); 20226e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart } 20326e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 20426e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart /* Create links. */ 20526e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart list_for_each_entry(entity, &vsp1->entities, list_dev) { 20626e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart if (entity->type == VSP1_ENTITY_LIF || 20726e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart entity->type == VSP1_ENTITY_RPF) 20826e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart continue; 20926e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 21026e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart ret = vsp1_create_links(vsp1, entity); 21126e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart if (ret < 0) 21226e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart goto done; 21326e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart } 21426e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 21526e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart if (vsp1->pdata->features & VSP1_HAS_LIF) { 21626e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart ret = media_entity_create_link( 21726e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart &vsp1->wpf[0]->entity.subdev.entity, RWPF_PAD_SOURCE, 21826e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart &vsp1->lif->entity.subdev.entity, LIF_PAD_SINK, 0); 21926e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart if (ret < 0) 22026e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart return ret; 22126e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart } 22226e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 22326e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart /* Register all subdevs. */ 22426e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart list_for_each_entry(entity, &vsp1->entities, list_dev) { 22526e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart ret = v4l2_device_register_subdev(&vsp1->v4l2_dev, 22626e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart &entity->subdev); 22726e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart if (ret < 0) 22826e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart goto done; 22926e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart } 23026e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 23126e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart ret = v4l2_device_register_subdev_nodes(&vsp1->v4l2_dev); 23226e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 23326e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchartdone: 23426e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart if (ret < 0) 23526e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart vsp1_destroy_entities(vsp1); 23626e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 23726e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart return ret; 23826e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart} 23926e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 24026e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchartstatic int vsp1_device_init(struct vsp1_device *vsp1) 24126e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart{ 24226e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart unsigned int i; 24326e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart u32 status; 24426e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 24526e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart /* Reset any channel that might be running. */ 24626e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart status = vsp1_read(vsp1, VI6_STATUS); 24726e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 24883453a7cc8b703ce818c24c2298822b0b179e652Katsuya Matsubara for (i = 0; i < vsp1->pdata->wpf_count; ++i) { 24926e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart unsigned int timeout; 25026e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 25126e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart if (!(status & VI6_STATUS_SYS_ACT(i))) 25226e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart continue; 25326e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 25426e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart vsp1_write(vsp1, VI6_SRESET, VI6_SRESET_SRTS(i)); 25526e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart for (timeout = 10; timeout > 0; --timeout) { 25626e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart status = vsp1_read(vsp1, VI6_STATUS); 25726e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart if (!(status & VI6_STATUS_SYS_ACT(i))) 25826e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart break; 25926e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 26026e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart usleep_range(1000, 2000); 26126e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart } 26226e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 26326e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart if (!timeout) { 26426e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart dev_err(vsp1->dev, "failed to reset wpf.%u\n", i); 26526e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart return -ETIMEDOUT; 26626e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart } 26726e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart } 26826e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 26926e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart vsp1_write(vsp1, VI6_CLK_DCSWT, (8 << VI6_CLK_DCSWT_CSTPW_SHIFT) | 27026e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart (8 << VI6_CLK_DCSWT_CSTRW_SHIFT)); 27126e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 27283453a7cc8b703ce818c24c2298822b0b179e652Katsuya Matsubara for (i = 0; i < vsp1->pdata->rpf_count; ++i) 27326e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart vsp1_write(vsp1, VI6_DPR_RPF_ROUTE(i), VI6_DPR_NODE_UNUSED); 27426e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 27583453a7cc8b703ce818c24c2298822b0b179e652Katsuya Matsubara for (i = 0; i < vsp1->pdata->uds_count; ++i) 27626e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart vsp1_write(vsp1, VI6_DPR_UDS_ROUTE(i), VI6_DPR_NODE_UNUSED); 27726e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 27826e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart vsp1_write(vsp1, VI6_DPR_SRU_ROUTE, VI6_DPR_NODE_UNUSED); 27926e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart vsp1_write(vsp1, VI6_DPR_LUT_ROUTE, VI6_DPR_NODE_UNUSED); 28026e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart vsp1_write(vsp1, VI6_DPR_CLU_ROUTE, VI6_DPR_NODE_UNUSED); 28126e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart vsp1_write(vsp1, VI6_DPR_HST_ROUTE, VI6_DPR_NODE_UNUSED); 28226e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart vsp1_write(vsp1, VI6_DPR_HSI_ROUTE, VI6_DPR_NODE_UNUSED); 28326e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart vsp1_write(vsp1, VI6_DPR_BRU_ROUTE, VI6_DPR_NODE_UNUSED); 28426e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 28526e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart vsp1_write(vsp1, VI6_DPR_HGO_SMPPT, (7 << VI6_DPR_SMPPT_TGW_SHIFT) | 28626e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart (VI6_DPR_NODE_UNUSED << VI6_DPR_SMPPT_PT_SHIFT)); 28726e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart vsp1_write(vsp1, VI6_DPR_HGT_SMPPT, (7 << VI6_DPR_SMPPT_TGW_SHIFT) | 28826e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart (VI6_DPR_NODE_UNUSED << VI6_DPR_SMPPT_PT_SHIFT)); 28926e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 29026e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart return 0; 29126e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart} 29226e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 293f2226a33bf9a431f616b435aa10a9ad4fea1d042Laurent Pinchartstatic int vsp1_clocks_enable(struct vsp1_device *vsp1) 294f2226a33bf9a431f616b435aa10a9ad4fea1d042Laurent Pinchart{ 295f2226a33bf9a431f616b435aa10a9ad4fea1d042Laurent Pinchart int ret; 296f2226a33bf9a431f616b435aa10a9ad4fea1d042Laurent Pinchart 297f2226a33bf9a431f616b435aa10a9ad4fea1d042Laurent Pinchart ret = clk_prepare_enable(vsp1->clock); 298f2226a33bf9a431f616b435aa10a9ad4fea1d042Laurent Pinchart if (ret < 0) 299f2226a33bf9a431f616b435aa10a9ad4fea1d042Laurent Pinchart return ret; 300f2226a33bf9a431f616b435aa10a9ad4fea1d042Laurent Pinchart 301f2226a33bf9a431f616b435aa10a9ad4fea1d042Laurent Pinchart if (IS_ERR(vsp1->rt_clock)) 302f2226a33bf9a431f616b435aa10a9ad4fea1d042Laurent Pinchart return 0; 303f2226a33bf9a431f616b435aa10a9ad4fea1d042Laurent Pinchart 304f2226a33bf9a431f616b435aa10a9ad4fea1d042Laurent Pinchart ret = clk_prepare_enable(vsp1->rt_clock); 305f2226a33bf9a431f616b435aa10a9ad4fea1d042Laurent Pinchart if (ret < 0) { 306f2226a33bf9a431f616b435aa10a9ad4fea1d042Laurent Pinchart clk_disable_unprepare(vsp1->clock); 307f2226a33bf9a431f616b435aa10a9ad4fea1d042Laurent Pinchart return ret; 308f2226a33bf9a431f616b435aa10a9ad4fea1d042Laurent Pinchart } 309f2226a33bf9a431f616b435aa10a9ad4fea1d042Laurent Pinchart 310f2226a33bf9a431f616b435aa10a9ad4fea1d042Laurent Pinchart return 0; 311f2226a33bf9a431f616b435aa10a9ad4fea1d042Laurent Pinchart} 312f2226a33bf9a431f616b435aa10a9ad4fea1d042Laurent Pinchart 313f2226a33bf9a431f616b435aa10a9ad4fea1d042Laurent Pinchartstatic void vsp1_clocks_disable(struct vsp1_device *vsp1) 314f2226a33bf9a431f616b435aa10a9ad4fea1d042Laurent Pinchart{ 315f2226a33bf9a431f616b435aa10a9ad4fea1d042Laurent Pinchart if (!IS_ERR(vsp1->rt_clock)) 316f2226a33bf9a431f616b435aa10a9ad4fea1d042Laurent Pinchart clk_disable_unprepare(vsp1->rt_clock); 317f2226a33bf9a431f616b435aa10a9ad4fea1d042Laurent Pinchart clk_disable_unprepare(vsp1->clock); 318f2226a33bf9a431f616b435aa10a9ad4fea1d042Laurent Pinchart} 319f2226a33bf9a431f616b435aa10a9ad4fea1d042Laurent Pinchart 32026e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart/* 32126e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart * vsp1_device_get - Acquire the VSP1 device 32226e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart * 32326e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart * Increment the VSP1 reference count and initialize the device if the first 32426e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart * reference is taken. 32526e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart * 32626e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart * Return a pointer to the VSP1 device or NULL if an error occured. 32726e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart */ 32826e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchartstruct vsp1_device *vsp1_device_get(struct vsp1_device *vsp1) 32926e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart{ 33026e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart struct vsp1_device *__vsp1 = vsp1; 33126e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart int ret; 33226e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 33326e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart mutex_lock(&vsp1->lock); 33426e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart if (vsp1->ref_count > 0) 33526e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart goto done; 33626e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 337f2226a33bf9a431f616b435aa10a9ad4fea1d042Laurent Pinchart ret = vsp1_clocks_enable(vsp1); 33826e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart if (ret < 0) { 33926e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart __vsp1 = NULL; 34026e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart goto done; 34126e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart } 34226e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 34326e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart ret = vsp1_device_init(vsp1); 34426e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart if (ret < 0) { 345f2226a33bf9a431f616b435aa10a9ad4fea1d042Laurent Pinchart vsp1_clocks_disable(vsp1); 34626e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart __vsp1 = NULL; 34726e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart goto done; 34826e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart } 34926e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 35026e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchartdone: 35126e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart if (__vsp1) 35226e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart vsp1->ref_count++; 35326e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 35426e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart mutex_unlock(&vsp1->lock); 35526e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart return __vsp1; 35626e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart} 35726e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 35826e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart/* 35926e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart * vsp1_device_put - Release the VSP1 device 36026e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart * 36126e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart * Decrement the VSP1 reference count and cleanup the device if the last 36226e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart * reference is released. 36326e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart */ 36426e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchartvoid vsp1_device_put(struct vsp1_device *vsp1) 36526e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart{ 36626e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart mutex_lock(&vsp1->lock); 36726e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 36826e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart if (--vsp1->ref_count == 0) 369f2226a33bf9a431f616b435aa10a9ad4fea1d042Laurent Pinchart vsp1_clocks_disable(vsp1); 37026e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 37126e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart mutex_unlock(&vsp1->lock); 37226e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart} 37326e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 37426e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart/* ----------------------------------------------------------------------------- 37526e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart * Power Management 37626e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart */ 37726e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 37826e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart#ifdef CONFIG_PM_SLEEP 37926e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchartstatic int vsp1_pm_suspend(struct device *dev) 38026e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart{ 38126e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart struct vsp1_device *vsp1 = dev_get_drvdata(dev); 38226e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 38326e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart WARN_ON(mutex_is_locked(&vsp1->lock)); 38426e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 38526e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart if (vsp1->ref_count == 0) 38626e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart return 0; 38726e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 388f2226a33bf9a431f616b435aa10a9ad4fea1d042Laurent Pinchart vsp1_clocks_disable(vsp1); 38926e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart return 0; 39026e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart} 39126e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 39226e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchartstatic int vsp1_pm_resume(struct device *dev) 39326e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart{ 39426e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart struct vsp1_device *vsp1 = dev_get_drvdata(dev); 39526e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 39626e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart WARN_ON(mutex_is_locked(&vsp1->lock)); 39726e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 39826e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart if (vsp1->ref_count) 39926e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart return 0; 40026e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 401f2226a33bf9a431f616b435aa10a9ad4fea1d042Laurent Pinchart return vsp1_clocks_enable(vsp1); 40226e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart} 40326e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart#endif 40426e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 40526e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchartstatic const struct dev_pm_ops vsp1_pm_ops = { 40626e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart SET_SYSTEM_SLEEP_PM_OPS(vsp1_pm_suspend, vsp1_pm_resume) 40726e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart}; 40826e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 40926e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart/* ----------------------------------------------------------------------------- 41026e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart * Platform Driver 41126e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart */ 41226e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 41326e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchartstatic struct vsp1_platform_data * 41426e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchartvsp1_get_platform_data(struct platform_device *pdev) 41526e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart{ 41626e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart struct vsp1_platform_data *pdata = pdev->dev.platform_data; 41726e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 41826e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart if (pdata == NULL) { 41926e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart dev_err(&pdev->dev, "missing platform data\n"); 42026e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart return NULL; 42126e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart } 42226e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 42326e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart if (pdata->rpf_count <= 0 || pdata->rpf_count > VPS1_MAX_RPF) { 42426e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart dev_err(&pdev->dev, "invalid number of RPF (%u)\n", 42526e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart pdata->rpf_count); 42626e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart return NULL; 42726e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart } 42826e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 42926e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart if (pdata->uds_count <= 0 || pdata->uds_count > VPS1_MAX_UDS) { 43026e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart dev_err(&pdev->dev, "invalid number of UDS (%u)\n", 43126e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart pdata->uds_count); 43226e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart return NULL; 43326e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart } 43426e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 43526e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart if (pdata->wpf_count <= 0 || pdata->wpf_count > VPS1_MAX_WPF) { 43626e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart dev_err(&pdev->dev, "invalid number of WPF (%u)\n", 43726e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart pdata->wpf_count); 43826e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart return NULL; 43926e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart } 44026e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 44126e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart return pdata; 44226e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart} 44326e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 44426e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchartstatic int vsp1_probe(struct platform_device *pdev) 44526e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart{ 44626e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart struct vsp1_device *vsp1; 44726e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart struct resource *irq; 44826e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart struct resource *io; 44926e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart int ret; 45026e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 45126e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart vsp1 = devm_kzalloc(&pdev->dev, sizeof(*vsp1), GFP_KERNEL); 45226e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart if (vsp1 == NULL) 45326e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart return -ENOMEM; 45426e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 45526e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart vsp1->dev = &pdev->dev; 45626e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart mutex_init(&vsp1->lock); 45726e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart INIT_LIST_HEAD(&vsp1->entities); 45826e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 45926e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart vsp1->pdata = vsp1_get_platform_data(pdev); 46026e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart if (vsp1->pdata == NULL) 46126e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart return -ENODEV; 46226e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 46326e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart /* I/O, IRQ and clock resources */ 46426e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart io = platform_get_resource(pdev, IORESOURCE_MEM, 0); 46526e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart vsp1->mmio = devm_ioremap_resource(&pdev->dev, io); 466cbec6d3ab470565536480d3bd109a7fdb128c3c4Mauro Carvalho Chehab if (IS_ERR(vsp1->mmio)) 467cbec6d3ab470565536480d3bd109a7fdb128c3c4Mauro Carvalho Chehab return PTR_ERR(vsp1->mmio); 46826e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 46926e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart vsp1->clock = devm_clk_get(&pdev->dev, NULL); 47026e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart if (IS_ERR(vsp1->clock)) { 47126e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart dev_err(&pdev->dev, "failed to get clock\n"); 47226e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart return PTR_ERR(vsp1->clock); 47326e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart } 47426e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 475f2226a33bf9a431f616b435aa10a9ad4fea1d042Laurent Pinchart /* The RT clock is optional */ 476f2226a33bf9a431f616b435aa10a9ad4fea1d042Laurent Pinchart vsp1->rt_clock = devm_clk_get(&pdev->dev, "rt"); 477f2226a33bf9a431f616b435aa10a9ad4fea1d042Laurent Pinchart 47826e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0); 47926e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart if (!irq) { 48026e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart dev_err(&pdev->dev, "missing IRQ\n"); 48126e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart return -EINVAL; 48226e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart } 48326e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 48426e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart ret = devm_request_irq(&pdev->dev, irq->start, vsp1_irq_handler, 48526e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart IRQF_SHARED, dev_name(&pdev->dev), vsp1); 48626e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart if (ret < 0) { 48726e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart dev_err(&pdev->dev, "failed to request IRQ\n"); 48826e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart return ret; 48926e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart } 49026e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 49126e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart /* Instanciate entities */ 49226e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart ret = vsp1_create_entities(vsp1); 49326e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart if (ret < 0) { 49426e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart dev_err(&pdev->dev, "failed to create entities\n"); 49526e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart return ret; 49626e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart } 49726e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 49826e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart platform_set_drvdata(pdev, vsp1); 49926e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 50026e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart return 0; 50126e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart} 50226e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 50326e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchartstatic int vsp1_remove(struct platform_device *pdev) 50426e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart{ 50526e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart struct vsp1_device *vsp1 = platform_get_drvdata(pdev); 50626e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 50726e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart vsp1_destroy_entities(vsp1); 50826e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 50926e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart return 0; 51026e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart} 51126e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 51226e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchartstatic struct platform_driver vsp1_platform_driver = { 51326e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart .probe = vsp1_probe, 51426e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart .remove = vsp1_remove, 51526e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart .driver = { 51626e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart .owner = THIS_MODULE, 51726e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart .name = "vsp1", 51826e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart .pm = &vsp1_pm_ops, 51926e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart }, 52026e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart}; 52126e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 52226e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchartmodule_platform_driver(vsp1_platform_driver); 52326e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent Pinchart 52426e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent PinchartMODULE_ALIAS("vsp1"); 52526e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent PinchartMODULE_AUTHOR("Laurent Pinchart <laurent.pinchart@ideasonboard.com>"); 52626e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent PinchartMODULE_DESCRIPTION("Renesas VSP1 Driver"); 52726e0ca22c3b85b04f693dd0422f13a61846ccfa9Laurent PinchartMODULE_LICENSE("GPL"); 528