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/*
* Copyright (C) 2012 Texas Instruments
* Author: Rob Clark <robdclark@gmail.com>
*
* 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.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __TILCDC_REGS_H__
#define __TILCDC_REGS_H__
/* LCDC register definitions, based on da8xx-fb */
#include <linux/bitops.h>
#include "tilcdc_drv.h"
/* LCDC Status Register */
#define LCDC_END_OF_FRAME1 BIT(9)
#define LCDC_END_OF_FRAME0 BIT(8)
#define LCDC_PL_LOAD_DONE BIT(6)
#define LCDC_FIFO_UNDERFLOW BIT(5)
#define LCDC_SYNC_LOST BIT(2)
#define LCDC_FRAME_DONE BIT(0)
/* LCDC DMA Control Register */
#define LCDC_DMA_BURST_SIZE(x) ((x) << 4)
#define LCDC_DMA_BURST_1 0x0
#define LCDC_DMA_BURST_2 0x1
#define LCDC_DMA_BURST_4 0x2
#define LCDC_DMA_BURST_8 0x3
#define LCDC_DMA_BURST_16 0x4
#define LCDC_V1_END_OF_FRAME_INT_ENA BIT(2)
#define LCDC_V2_END_OF_FRAME0_INT_ENA BIT(8)
#define LCDC_V2_END_OF_FRAME1_INT_ENA BIT(9)
#define LCDC_DUAL_FRAME_BUFFER_ENABLE BIT(0)
/* LCDC Control Register */
#define LCDC_CLK_DIVISOR(x) ((x) << 8)
#define LCDC_RASTER_MODE 0x01
/* LCDC Raster Control Register */
#define LCDC_PALETTE_LOAD_MODE(x) ((x) << 20)
#define PALETTE_AND_DATA 0x00
#define PALETTE_ONLY 0x01
#define DATA_ONLY 0x02
#define LCDC_MONO_8BIT_MODE BIT(9)
#define LCDC_RASTER_ORDER BIT(8)
#define LCDC_TFT_MODE BIT(7)
#define LCDC_V1_UNDERFLOW_INT_ENA BIT(6)
#define LCDC_V2_UNDERFLOW_INT_ENA BIT(5)
#define LCDC_V1_PL_INT_ENA BIT(4)
#define LCDC_V2_PL_INT_ENA BIT(6)
#define LCDC_MONOCHROME_MODE BIT(1)
#define LCDC_RASTER_ENABLE BIT(0)
#define LCDC_TFT_ALT_ENABLE BIT(23)
#define LCDC_STN_565_ENABLE BIT(24)
#define LCDC_V2_DMA_CLK_EN BIT(2)
#define LCDC_V2_LIDD_CLK_EN BIT(1)
#define LCDC_V2_CORE_CLK_EN BIT(0)
#define LCDC_V2_LPP_B10 26
#define LCDC_V2_TFT_24BPP_MODE BIT(25)
#define LCDC_V2_TFT_24BPP_UNPACK BIT(26)
/* LCDC Raster Timing 2 Register */
#define LCDC_AC_BIAS_TRANSITIONS_PER_INT(x) ((x) << 16)
#define LCDC_AC_BIAS_FREQUENCY(x) ((x) << 8)
#define LCDC_SYNC_CTRL BIT(25)
#define LCDC_SYNC_EDGE BIT(24)
#define LCDC_INVERT_PIXEL_CLOCK BIT(22)
#define LCDC_INVERT_HSYNC BIT(21)
#define LCDC_INVERT_VSYNC BIT(20)
#define LCDC_LPP_B10 BIT(26)
/* LCDC Block */
#define LCDC_PID_REG 0x0
#define LCDC_CTRL_REG 0x4
#define LCDC_STAT_REG 0x8
#define LCDC_RASTER_CTRL_REG 0x28
#define LCDC_RASTER_TIMING_0_REG 0x2c
#define LCDC_RASTER_TIMING_1_REG 0x30
#define LCDC_RASTER_TIMING_2_REG 0x34
#define LCDC_DMA_CTRL_REG 0x40
#define LCDC_DMA_FB_BASE_ADDR_0_REG 0x44
#define LCDC_DMA_FB_CEILING_ADDR_0_REG 0x48
#define LCDC_DMA_FB_BASE_ADDR_1_REG 0x4c
#define LCDC_DMA_FB_CEILING_ADDR_1_REG 0x50
/* Interrupt Registers available only in Version 2 */
#define LCDC_RAW_STAT_REG 0x58
#define LCDC_MASKED_STAT_REG 0x5c
#define LCDC_INT_ENABLE_SET_REG 0x60
#define LCDC_INT_ENABLE_CLR_REG 0x64
#define LCDC_END_OF_INT_IND_REG 0x68
/* Clock registers available only on Version 2 */
#define LCDC_CLK_ENABLE_REG 0x6c
#define LCDC_CLK_RESET_REG 0x70
#define LCDC_CLK_MAIN_RESET BIT(3)
/*
* Helpers:
*/
static inline void tilcdc_write(struct drm_device *dev, u32 reg, u32 data)
{
struct tilcdc_drm_private *priv = dev->dev_private;
iowrite32(data, priv->mmio + reg);
}
static inline void tilcdc_write64(struct drm_device *dev, u32 reg, u64 data)
{
struct tilcdc_drm_private *priv = dev->dev_private;
volatile void __iomem *addr = priv->mmio + reg;
#ifdef iowrite64
iowrite64(data, addr);
#else
__iowmb();
/* This compiles to strd (=64-bit write) on ARM7 */
*(volatile u64 __force *)addr = __cpu_to_le64(data);
#endif
}
static inline u32 tilcdc_read(struct drm_device *dev, u32 reg)
{
struct tilcdc_drm_private *priv = dev->dev_private;
return ioread32(priv->mmio + reg);
}
static inline void tilcdc_set(struct drm_device *dev, u32 reg, u32 mask)
{
tilcdc_write(dev, reg, tilcdc_read(dev, reg) | mask);
}
static inline void tilcdc_clear(struct drm_device *dev, u32 reg, u32 mask)
{
tilcdc_write(dev, reg, tilcdc_read(dev, reg) & ~mask);
}
/* the register to read/clear irqstatus differs between v1 and v2 of the IP */
static inline u32 tilcdc_irqstatus_reg(struct drm_device *dev)
{
struct tilcdc_drm_private *priv = dev->dev_private;
return (priv->rev == 2) ? LCDC_MASKED_STAT_REG : LCDC_STAT_REG;
}
static inline u32 tilcdc_read_irqstatus(struct drm_device *dev)
{
return tilcdc_read(dev, tilcdc_irqstatus_reg(dev));
}
static inline void tilcdc_clear_irqstatus(struct drm_device *dev, u32 mask)
{
tilcdc_write(dev, tilcdc_irqstatus_reg(dev), mask);
}
#endif /* __TILCDC_REGS_H__ */
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