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/* SPDX-License-Identifier: GPL-2.0-only */
/*
*
* (C) COPYRIGHT 2012-2013 ARM Limited. All rights reserved.
*
* Parts of this file were based on sources as follows:
*
* Copyright (c) 2006-2008 Intel Corporation
* Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
* Copyright (C) 2011 Texas Instruments
*/
#ifndef _PL111_DRM_H_
#define _PL111_DRM_H_
#include <linux/clk-provider.h>
#include <linux/interrupt.h>
#include <drm/drm_bridge.h>
#include <drm/drm_connector.h>
#include <drm/drm_encoder.h>
#include <drm/drm_gem.h>
#include <drm/drm_panel.h>
#include <drm/drm_simple_kms_helper.h>
/*
* CLCD Controller Internal Register addresses
*/
#define CLCD_TIM0 0x00000000
#define CLCD_TIM1 0x00000004
#define CLCD_TIM2 0x00000008
#define CLCD_TIM3 0x0000000c
#define CLCD_UBAS 0x00000010
#define CLCD_LBAS 0x00000014
#define CLCD_PL110_IENB 0x00000018
#define CLCD_PL110_CNTL 0x0000001c
#define CLCD_PL110_STAT 0x00000020
#define CLCD_PL110_INTR 0x00000024
#define CLCD_PL110_UCUR 0x00000028
#define CLCD_PL110_LCUR 0x0000002C
#define CLCD_PL111_CNTL 0x00000018
#define CLCD_PL111_IENB 0x0000001c
#define CLCD_PL111_RIS 0x00000020
#define CLCD_PL111_MIS 0x00000024
#define CLCD_PL111_ICR 0x00000028
#define CLCD_PL111_UCUR 0x0000002c
#define CLCD_PL111_LCUR 0x00000030
#define CLCD_PALL 0x00000200
#define CLCD_PALETTE 0x00000200
#define TIM2_PCD_LO_MASK GENMASK(4, 0)
#define TIM2_PCD_LO_BITS 5
#define TIM2_CLKSEL (1 << 5)
#define TIM2_ACB_MASK GENMASK(10, 6)
#define TIM2_IVS (1 << 11)
#define TIM2_IHS (1 << 12)
#define TIM2_IPC (1 << 13)
#define TIM2_IOE (1 << 14)
#define TIM2_BCD (1 << 26)
#define TIM2_PCD_HI_MASK GENMASK(31, 27)
#define TIM2_PCD_HI_BITS 5
#define TIM2_PCD_HI_SHIFT 27
#define CNTL_LCDEN (1 << 0)
#define CNTL_LCDBPP1 (0 << 1)
#define CNTL_LCDBPP2 (1 << 1)
#define CNTL_LCDBPP4 (2 << 1)
#define CNTL_LCDBPP8 (3 << 1)
#define CNTL_LCDBPP16 (4 << 1)
#define CNTL_LCDBPP16_565 (6 << 1)
#define CNTL_LCDBPP16_444 (7 << 1)
#define CNTL_LCDBPP24 (5 << 1)
#define CNTL_LCDBW (1 << 4)
#define CNTL_LCDTFT (1 << 5)
#define CNTL_LCDMONO8 (1 << 6)
#define CNTL_LCDDUAL (1 << 7)
#define CNTL_BGR (1 << 8)
#define CNTL_BEBO (1 << 9)
#define CNTL_BEPO (1 << 10)
#define CNTL_LCDPWR (1 << 11)
#define CNTL_LCDVCOMP(x) ((x) << 12)
#define CNTL_LDMAFIFOTIME (1 << 15)
#define CNTL_WATERMARK (1 << 16)
/* ST Microelectronics variant bits */
#define CNTL_ST_1XBPP_444 0x0
#define CNTL_ST_1XBPP_5551 (1 << 17)
#define CNTL_ST_1XBPP_565 (1 << 18)
#define CNTL_ST_CDWID_12 0x0
#define CNTL_ST_CDWID_16 (1 << 19)
#define CNTL_ST_CDWID_18 (1 << 20)
#define CNTL_ST_CDWID_24 ((1 << 19) | (1 << 20))
#define CNTL_ST_CEAEN (1 << 21)
#define CNTL_ST_LCDBPP24_PACKED (6 << 1)
#define CLCD_IRQ_NEXTBASE_UPDATE BIT(2)
struct drm_minor;
/**
* struct pl111_variant_data - encodes IP differences
* @name: the name of this variant
* @is_pl110: this is the early PL110 variant
* @is_lcdc: this is the ST Microelectronics Nomadik LCDC variant
* @external_bgr: this is the Versatile Pl110 variant with external
* BGR/RGB routing
* @broken_clockdivider: the clock divider is broken and we need to
* use the supplied clock directly
* @broken_vblank: the vblank IRQ is broken on this variant
* @st_bitmux_control: this variant is using the ST Micro bitmux
* extensions to the control register
* @formats: array of supported pixel formats on this variant
* @nformats: the length of the array of supported pixel formats
* @fb_bpp: desired bits per pixel on the default framebuffer
*/
struct pl111_variant_data {
const char *name;
bool is_pl110;
bool is_lcdc;
bool external_bgr;
bool broken_clockdivider;
bool broken_vblank;
bool st_bitmux_control;
const u32 *formats;
unsigned int nformats;
unsigned int fb_bpp;
};
struct pl111_drm_dev_private {
struct drm_device *drm;
struct drm_connector *connector;
struct drm_panel *panel;
struct drm_bridge *bridge;
struct drm_simple_display_pipe pipe;
void *regs;
u32 memory_bw;
u32 ienb;
u32 ctrl;
/* The pixel clock (a reference to our clock divider off of CLCDCLK). */
struct clk *clk;
/* pl111's internal clock divider. */
struct clk_hw clk_div;
/* Lock to sync access to CLCD_TIM2 between the common clock
* subsystem and pl111_display_enable().
*/
spinlock_t tim2_lock;
const struct pl111_variant_data *variant;
void (*variant_display_enable) (struct drm_device *drm, u32 format);
void (*variant_display_disable) (struct drm_device *drm);
bool use_device_memory;
};
int pl111_display_init(struct drm_device *dev);
irqreturn_t pl111_irq(int irq, void *data);
void pl111_debugfs_init(struct drm_minor *minor);
#endif /* _PL111_DRM_H_ */
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