| /* |
| * 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_SIZE_MASK ((0x7) << 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_DMA_FIFO_THRESHOLD(x) ((x) << 8) |
| #define LCDC_DMA_FIFO_THRESHOLD_MASK ((0x3) << 8) |
| #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_CLK_DIVISOR_MASK ((0xFF) << 8) |
| #define LCDC_RASTER_MODE 0x01 |
| |
| /* LCDC Raster Control Register */ |
| #define LCDC_PALETTE_LOAD_MODE(x) ((x) << 20) |
| #define LCDC_PALETTE_LOAD_MODE_MASK ((0x3) << 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_V1_SYNC_LOST_INT_ENA BIT(5) |
| #define LCDC_V1_FRAME_DONE_INT_ENA BIT(3) |
| #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_TRANSITIONS_PER_INT_MASK ((0xF) << 16) |
| #define LCDC_AC_BIAS_FREQUENCY(x) ((x) << 8) |
| #define LCDC_AC_BIAS_FREQUENCY_MASK ((0xFF) << 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_write_mask(struct drm_device *dev, u32 reg, |
| u32 val, u32 mask) |
| { |
| tilcdc_write(dev, reg, (tilcdc_read(dev, reg) & ~mask) | (val & mask)); |
| } |
| |
| 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__ */ |
