LXR linux/drivers/gpu/drm/tve200/tve200

   1/* SPDX-License-Identifier: GPL-2.0-only */
   2/*
   3 * Copyright (C) 2017 Linus Walleij <linus.walleij@linaro.org>
   4 * Parts of this file were based on sources as follows:
   5 *
   6 * Copyright (C) 2006-2008 Intel Corporation
   7 * Copyright (C) 2007 Amos Lee <amos_lee@storlinksemi.com>
   8 * Copyright (C) 2007 Dave Airlie <airlied@linux.ie>
   9 * Copyright (C) 2011 Texas Instruments
  10 * Copyright (C) 2017 Eric Anholt
  11 */
  12
  13#ifndef _TVE200_DRM_H_
  14#define _TVE200_DRM_H_
  15
  16#include <linux/irqreturn.h>
  17
  18#include <drm/drm_simple_kms_helper.h>
  19
  20struct clk;
  21struct drm_bridge;
  22struct drm_connector;
  23struct drm_device;
  24struct drm_file;
  25struct drm_mode_create_dumb;
  26struct drm_panel;
  27
  28/* Bits 2-31 are valid physical base addresses */
  29#define TVE200_Y_FRAME_BASE_ADDR        0x00
  30#define TVE200_U_FRAME_BASE_ADDR        0x04
  31#define TVE200_V_FRAME_BASE_ADDR        0x08
  32
  33#define TVE200_INT_EN                   0x0C
  34#define TVE200_INT_CLR                  0x10
  35#define TVE200_INT_STAT                 0x14
  36#define TVE200_INT_BUS_ERR              BIT(7)
  37#define TVE200_INT_V_STATUS             BIT(6) /* vertical blank */
  38#define TVE200_INT_V_NEXT_FRAME         BIT(5)
  39#define TVE200_INT_U_NEXT_FRAME         BIT(4)
  40#define TVE200_INT_Y_NEXT_FRAME         BIT(3)
  41#define TVE200_INT_V_FIFO_UNDERRUN      BIT(2)
  42#define TVE200_INT_U_FIFO_UNDERRUN      BIT(1)
  43#define TVE200_INT_Y_FIFO_UNDERRUN      BIT(0)
  44#define TVE200_FIFO_UNDERRUNS           (TVE200_INT_V_FIFO_UNDERRUN | \
  45                                         TVE200_INT_U_FIFO_UNDERRUN | \
  46                                         TVE200_INT_Y_FIFO_UNDERRUN)
  47
  48#define TVE200_CTRL                     0x18
  49#define TVE200_CTRL_YUV420              BIT(31)
  50#define TVE200_CTRL_CSMODE              BIT(30)
  51#define TVE200_CTRL_NONINTERLACE        BIT(28) /* 0 = non-interlace CCIR656 */
  52#define TVE200_CTRL_TVCLKP              BIT(27) /* Inverted clock phase */
  53/* Bits 24..26 define the burst size after arbitration on the bus */
  54#define TVE200_CTRL_BURST_4_WORDS       (0 << 24)
  55#define TVE200_CTRL_BURST_8_WORDS       (1 << 24)
  56#define TVE200_CTRL_BURST_16_WORDS      (2 << 24)
  57#define TVE200_CTRL_BURST_32_WORDS      (3 << 24)
  58#define TVE200_CTRL_BURST_64_WORDS      (4 << 24)
  59#define TVE200_CTRL_BURST_128_WORDS     (5 << 24)
  60#define TVE200_CTRL_BURST_256_WORDS     (6 << 24)
  61#define TVE200_CTRL_BURST_0_WORDS       (7 << 24) /* ? */
  62/*
  63 * Bits 16..23 is the retry count*16 before issueing a new AHB transfer
  64 * on the AHB bus.
  65 */
  66#define TVE200_CTRL_RETRYCNT_MASK       GENMASK(23, 16)
  67#define TVE200_CTRL_RETRYCNT_16         (1 << 16)
  68#define TVE200_CTRL_BBBP                BIT(15) /* 0 = little-endian */
  69/* Bits 12..14 define the YCbCr ordering */
  70#define TVE200_CTRL_YCBCRODR_CB0Y0CR0Y1 (0 << 12)
  71#define TVE200_CTRL_YCBCRODR_Y0CB0Y1CR0 (1 << 12)
  72#define TVE200_CTRL_YCBCRODR_CR0Y0CB0Y1 (2 << 12)
  73#define TVE200_CTRL_YCBCRODR_Y1CB0Y0CR0 (3 << 12)
  74#define TVE200_CTRL_YCBCRODR_CR0Y1CB0Y0 (4 << 12)
  75#define TVE200_CTRL_YCBCRODR_Y1CR0Y0CB0 (5 << 12)
  76#define TVE200_CTRL_YCBCRODR_CB0Y1CR0Y0 (6 << 12)
  77#define TVE200_CTRL_YCBCRODR_Y0CR0Y1CB0 (7 << 12)
  78/* Bits 10..11 define the input resolution (framebuffer size) */
  79#define TVE200_CTRL_IPRESOL_CIF         (0 << 10)
  80#define TVE200_CTRL_IPRESOL_VGA         (1 << 10)
  81#define TVE200_CTRL_IPRESOL_D1          (2 << 10)
  82#define TVE200_CTRL_NTSC                BIT(9) /* 0 = PAL, 1 = NTSC */
  83#define TVE200_CTRL_INTERLACE           BIT(8) /* 1 = interlace, only for D1 */
  84#define TVE200_IPDMOD_RGB555            (0 << 6) /* TVE200_CTRL_YUV420 = 0 */
  85#define TVE200_IPDMOD_RGB565            (1 << 6)
  86#define TVE200_IPDMOD_RGB888            (2 << 6)
  87#define TVE200_IPDMOD_YUV420            (2 << 6) /* TVE200_CTRL_YUV420 = 1 */
  88#define TVE200_IPDMOD_YUV422            (3 << 6)
  89/* Bits 4 & 5 define when to fire the vblank IRQ */
  90#define TVE200_VSTSTYPE_VSYNC           (0 << 4) /* start of vsync */
  91#define TVE200_VSTSTYPE_VBP             (1 << 4) /* start of v back porch */
  92#define TVE200_VSTSTYPE_VAI             (2 << 4) /* start of v active image */
  93#define TVE200_VSTSTYPE_VFP             (3 << 4) /* start of v front porch */
  94#define TVE200_VSTSTYPE_BITS            (BIT(4) | BIT(5))
  95#define TVE200_BGR                      BIT(1) /* 0 = RGB, 1 = BGR */
  96#define TVE200_TVEEN                    BIT(0) /* Enable TVE block */
  97
  98#define TVE200_CTRL_2                   0x1c
  99#define TVE200_CTRL_3                   0x20
 100
 101#define TVE200_CTRL_4                   0x24
 102#define TVE200_CTRL_4_RESET             BIT(0) /* triggers reset of TVE200 */
 103
 104struct tve200_drm_dev_private {
 105        struct drm_device *drm;
 106
 107        struct drm_connector *connector;
 108        struct drm_panel *panel;
 109        struct drm_bridge *bridge;
 110        struct drm_simple_display_pipe pipe;
 111
 112        void *regs;
 113        struct clk *pclk;
 114        struct clk *clk;
 115};
 116
 117#define to_tve200_connector(x) \
 118        container_of(x, struct tve200_drm_connector, connector)
 119
 120int tve200_display_init(struct drm_device *dev);
 121irqreturn_t tve200_irq(int irq, void *data);
 122int tve200_connector_init(struct drm_device *dev);
 123int tve200_encoder_init(struct drm_device *dev);
 124int tve200_dumb_create(struct drm_file *file_priv,
 125                      struct drm_device *dev,
 126                      struct drm_mode_create_dumb *args);
 127
 128#endif /* _TVE200_DRM_H_ */
 129