/* 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 0 x00000000
#define CLCD_TIM1 0 x00000004
#define CLCD_TIM2 0 x00000008
#define CLCD_TIM3 0 x0000000c
#define CLCD_UBAS 0 x00000010
#define CLCD_LBAS 0 x00000014
#define CLCD_PL110_IENB 0 x00000018
#define CLCD_PL110_CNTL 0 x0000001c
#define CLCD_PL110_STAT 0 x00000020
#define CLCD_PL110_INTR 0 x00000024
#define CLCD_PL110_UCUR 0 x00000028
#define CLCD_PL110_LCUR 0 x0000002C
#define CLCD_PL111_CNTL 0 x00000018
#define CLCD_PL111_IENB 0 x0000001c
#define CLCD_PL111_RIS 0 x00000020
#define CLCD_PL111_MIS 0 x00000024
#define CLCD_PL111_ICR 0 x00000028
#define CLCD_PL111_UCUR 0 x0000002c
#define CLCD_PL111_LCUR 0 x00000030
#define CLCD_PALL 0 x00000200
#define CLCD_PALETTE 0 x00000200
#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 0 x0
#define CNTL_ST_1XBPP_5551 (1 << 17 )
#define CNTL_ST_1XBPP_565 (1 << 18 )
#define CNTL_ST_CDWID_12 0 x0
#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_depth : desired depth 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_depth;
};
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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