linux-imx

/*

 * Copyright (c) 2015 MediaTek Inc.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as

 * published by the Free Software Foundation.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 */

​

#include <drm/drmP.h>

#include <linux/clk.h>

#include <linux/component.h>

#include <linux/of_device.h>

#include <linux/of_irq.h>

#include <linux/platform_device.h>

​

#include "mtk_drm_crtc.h"

#include "mtk_drm_ddp_comp.h"

​

#define DISP_REG_OVL_INTEN          0x0004

#define OVL_FME_CPL_INT                 BIT(1)

#define DISP_REG_OVL_INTSTA         0x0008

#define DISP_REG_OVL_EN             0x000c

#define DISP_REG_OVL_RST            0x0014

#define DISP_REG_OVL_ROI_SIZE           0x0020

#define DISP_REG_OVL_ROI_BGCLR          0x0028

#define DISP_REG_OVL_SRC_CON            0x002c

#define DISP_REG_OVL_CON(n)         (0x0030 + 0x20 * (n))

#define DISP_REG_OVL_SRC_SIZE(n)        (0x0038 + 0x20 * (n))

#define DISP_REG_OVL_OFFSET(n)          (0x003c + 0x20 * (n))

#define DISP_REG_OVL_PITCH(n)           (0x0044 + 0x20 * (n))

#define DISP_REG_OVL_RDMA_CTRL(n)       (0x00c0 + 0x20 * (n))

#define DISP_REG_OVL_RDMA_GMC(n)        (0x00c8 + 0x20 * (n))

#define DISP_REG_OVL_ADDR_MT2701        0x0040

#define DISP_REG_OVL_ADDR_MT8173        0x0f40

#define DISP_REG_OVL_ADDR(ovl, n)       ((ovl)->data->addr + 0x20 * (n))

​

#define OVL_RDMA_MEM_GMC    0x40402020

​

#define OVL_CON_BYTE_SWAP   BIT(24)

#define OVL_CON_MTX_YUV_TO_RGB  (6 << 16)

#define OVL_CON_CLRFMT_RGB  (1 << 12)

#define OVL_CON_CLRFMT_RGBA8888 (2 << 12)

#define OVL_CON_CLRFMT_ARGB8888 (3 << 12)

#define OVL_CON_CLRFMT_UYVY (4 << 12)

#define OVL_CON_CLRFMT_YUYV (5 << 12)

#define OVL_CON_CLRFMT_RGB565(ovl)  ((ovl)->data->fmt_rgb565_is_0 ? \

                    0 : OVL_CON_CLRFMT_RGB)

#define OVL_CON_CLRFMT_RGB888(ovl)  ((ovl)->data->fmt_rgb565_is_0 ? \

                    OVL_CON_CLRFMT_RGB : 0)

#define OVL_CON_AEN     BIT(8)

#define OVL_CON_ALPHA       0xff

​

struct mtk_disp_ovl_data {

    unsigned int addr;

    bool fmt_rgb565_is_0;

};

​

/**

 * struct mtk_disp_ovl - DISP_OVL driver structure

 * @ddp_comp - structure containing type enum and hardware resources

 * @crtc - associated crtc to report vblank events to

 */

struct mtk_disp_ovl {

    struct mtk_ddp_comp     ddp_comp;

    struct drm_crtc         *crtc;

    const struct mtk_disp_ovl_data  *data;

};

​

static inline struct mtk_disp_ovl *comp_to_ovl(struct mtk_ddp_comp *comp)

{

    return container_of(comp, struct mtk_disp_ovl, ddp_comp);

}

​

static irqreturn_t mtk_disp_ovl_irq_handler(int irq, void *dev_id)

{

    struct mtk_disp_ovl *priv = dev_id;

    struct mtk_ddp_comp *ovl = &priv->ddp_comp;

​

    /* Clear frame completion interrupt */

    writel(0x0, ovl->regs + DISP_REG_OVL_INTSTA);

​

    if (!priv->crtc)

        return IRQ_NONE;

​

    mtk_crtc_ddp_irq(priv->crtc, ovl);

​

    return IRQ_HANDLED;