350 lines
8.9 KiB
C
350 lines
8.9 KiB
C
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/*
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*
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* (C) COPYRIGHT 2013-2016 ARM Limited. All rights reserved.
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*
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* This program is free software and is provided to you under the terms of the
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* GNU General Public License version 2 as published by the Free Software
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* Foundation, and any use by you of this program is subject to the terms
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* of such GNU licence.
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*
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* ARM Mali DP hardware manipulation routines.
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*/
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#ifndef __MALIDP_HW_H__
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#define __MALIDP_HW_H__
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#include <linux/bitops.h>
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#include "malidp_regs.h"
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struct videomode;
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struct clk;
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/* Mali DP IP blocks */
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enum {
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MALIDP_DE_BLOCK = 0,
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MALIDP_SE_BLOCK,
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MALIDP_DC_BLOCK
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};
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/* Mali DP layer IDs */
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enum {
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DE_VIDEO1 = BIT(0),
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DE_GRAPHICS1 = BIT(1),
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DE_GRAPHICS2 = BIT(2), /* used only in DP500 */
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DE_VIDEO2 = BIT(3),
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DE_SMART = BIT(4),
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};
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struct malidp_format_id {
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u32 format; /* DRM fourcc */
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u8 layer; /* bitmask of layers supporting it */
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u8 id; /* used internally */
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};
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#define MALIDP_INVALID_FORMAT_ID 0xff
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/*
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* hide the differences between register maps
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* by using a common structure to hold the
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* base register offsets
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*/
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struct malidp_irq_map {
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u32 irq_mask; /* mask of IRQs that can be enabled in the block */
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u32 vsync_irq; /* IRQ bit used for signaling during VSYNC */
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};
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struct malidp_layer {
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u16 id; /* layer ID */
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u16 base; /* address offset for the register bank */
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u16 ptr; /* address offset for the pointer register */
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u16 stride_offset; /* Offset to the first stride register. */
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};
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enum malidp_scaling_coeff_set {
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MALIDP_UPSCALING_COEFFS = 1,
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MALIDP_DOWNSCALING_1_5_COEFFS = 2,
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MALIDP_DOWNSCALING_2_COEFFS = 3,
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MALIDP_DOWNSCALING_2_75_COEFFS = 4,
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MALIDP_DOWNSCALING_4_COEFFS = 5,
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};
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struct malidp_se_config {
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u8 scale_enable : 1;
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u8 enhancer_enable : 1;
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u8 hcoeff : 3;
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u8 vcoeff : 3;
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u8 plane_src_id;
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u16 input_w, input_h;
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u16 output_w, output_h;
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u32 h_init_phase, h_delta_phase;
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u32 v_init_phase, v_delta_phase;
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};
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/* regmap features */
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#define MALIDP_REGMAP_HAS_CLEARIRQ (1 << 0)
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struct malidp_hw_regmap {
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/* address offset of the DE register bank */
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/* is always 0x0000 */
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/* address offset of the DE coefficients registers */
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const u16 coeffs_base;
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/* address offset of the SE registers bank */
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const u16 se_base;
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/* address offset of the DC registers bank */
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const u16 dc_base;
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/* address offset for the output depth register */
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const u16 out_depth_base;
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/* bitmap with register map features */
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const u8 features;
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/* list of supported layers */
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const u8 n_layers;
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const struct malidp_layer *layers;
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const struct malidp_irq_map de_irq_map;
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const struct malidp_irq_map se_irq_map;
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const struct malidp_irq_map dc_irq_map;
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/* list of supported pixel formats for each layer */
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const struct malidp_format_id *pixel_formats;
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const u8 n_pixel_formats;
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/* pitch alignment requirement in bytes */
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const u8 bus_align_bytes;
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};
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/* device features */
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/* Unlike DP550/650, DP500 has 3 stride registers in its video layer. */
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#define MALIDP_DEVICE_LV_HAS_3_STRIDES BIT(0)
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struct malidp_hw_device;
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/*
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* Static structure containing hardware specific data and pointers to
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* functions that behave differently between various versions of the IP.
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*/
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struct malidp_hw {
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const struct malidp_hw_regmap map;
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/*
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* Validate the driver instance against the hardware bits
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*/
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int (*query_hw)(struct malidp_hw_device *hwdev);
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/*
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* Set the hardware into config mode, ready to accept mode changes
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*/
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void (*enter_config_mode)(struct malidp_hw_device *hwdev);
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/*
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* Tell hardware to exit configuration mode
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*/
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void (*leave_config_mode)(struct malidp_hw_device *hwdev);
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/*
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* Query if hardware is in configuration mode
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*/
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bool (*in_config_mode)(struct malidp_hw_device *hwdev);
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/*
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* Set configuration valid flag for hardware parameters that can
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* be changed outside the configuration mode. Hardware will use
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* the new settings when config valid is set after the end of the
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* current buffer scanout
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*/
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void (*set_config_valid)(struct malidp_hw_device *hwdev);
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/*
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* Set a new mode in hardware. Requires the hardware to be in
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* configuration mode before this function is called.
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*/
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void (*modeset)(struct malidp_hw_device *hwdev, struct videomode *m);
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/*
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* Calculate the required rotation memory given the active area
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* and the buffer format.
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*/
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int (*rotmem_required)(struct malidp_hw_device *hwdev, u16 w, u16 h, u32 fmt);
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int (*se_set_scaling_coeffs)(struct malidp_hw_device *hwdev,
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struct malidp_se_config *se_config,
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struct malidp_se_config *old_config);
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long (*se_calc_mclk)(struct malidp_hw_device *hwdev,
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struct malidp_se_config *se_config,
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struct videomode *vm);
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u8 features;
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};
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/* Supported variants of the hardware */
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enum {
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MALIDP_500 = 0,
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MALIDP_550,
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MALIDP_650,
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/* keep the next entry last */
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MALIDP_MAX_DEVICES
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};
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extern const struct malidp_hw malidp_device[MALIDP_MAX_DEVICES];
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/*
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* Structure used by the driver during runtime operation.
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*/
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struct malidp_hw_device {
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struct malidp_hw *hw;
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void __iomem *regs;
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/* APB clock */
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struct clk *pclk;
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/* AXI clock */
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struct clk *aclk;
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/* main clock for display core */
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struct clk *mclk;
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/* pixel clock for display core */
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struct clk *pxlclk;
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u8 min_line_size;
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u16 max_line_size;
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/* track the device PM state */
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bool pm_suspended;
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/* size of memory used for rotating layers, up to two banks available */
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u32 rotation_memory[2];
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};
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static inline u32 malidp_hw_read(struct malidp_hw_device *hwdev, u32 reg)
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{
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WARN_ON(hwdev->pm_suspended);
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return readl(hwdev->regs + reg);
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}
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static inline void malidp_hw_write(struct malidp_hw_device *hwdev,
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u32 value, u32 reg)
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{
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WARN_ON(hwdev->pm_suspended);
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writel(value, hwdev->regs + reg);
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}
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static inline void malidp_hw_setbits(struct malidp_hw_device *hwdev,
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u32 mask, u32 reg)
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{
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u32 data = malidp_hw_read(hwdev, reg);
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data |= mask;
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malidp_hw_write(hwdev, data, reg);
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}
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static inline void malidp_hw_clearbits(struct malidp_hw_device *hwdev,
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u32 mask, u32 reg)
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{
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u32 data = malidp_hw_read(hwdev, reg);
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data &= ~mask;
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malidp_hw_write(hwdev, data, reg);
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}
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static inline u32 malidp_get_block_base(struct malidp_hw_device *hwdev,
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u8 block)
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{
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switch (block) {
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case MALIDP_SE_BLOCK:
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return hwdev->hw->map.se_base;
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case MALIDP_DC_BLOCK:
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return hwdev->hw->map.dc_base;
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}
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return 0;
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}
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static inline void malidp_hw_disable_irq(struct malidp_hw_device *hwdev,
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u8 block, u32 irq)
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{
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u32 base = malidp_get_block_base(hwdev, block);
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malidp_hw_clearbits(hwdev, irq, base + MALIDP_REG_MASKIRQ);
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}
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static inline void malidp_hw_enable_irq(struct malidp_hw_device *hwdev,
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u8 block, u32 irq)
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{
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u32 base = malidp_get_block_base(hwdev, block);
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malidp_hw_setbits(hwdev, irq, base + MALIDP_REG_MASKIRQ);
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}
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int malidp_de_irq_init(struct drm_device *drm, int irq);
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void malidp_de_irq_fini(struct drm_device *drm);
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int malidp_se_irq_init(struct drm_device *drm, int irq);
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void malidp_se_irq_fini(struct drm_device *drm);
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u8 malidp_hw_get_format_id(const struct malidp_hw_regmap *map,
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u8 layer_id, u32 format);
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static inline bool malidp_hw_pitch_valid(struct malidp_hw_device *hwdev,
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unsigned int pitch)
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{
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return !(pitch & (hwdev->hw->map.bus_align_bytes - 1));
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}
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/* U16.16 */
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#define FP_1_00000 0x00010000 /* 1.0 */
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#define FP_0_66667 0x0000AAAA /* 0.6667 = 1/1.5 */
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#define FP_0_50000 0x00008000 /* 0.5 = 1/2 */
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#define FP_0_36363 0x00005D17 /* 0.36363 = 1/2.75 */
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#define FP_0_25000 0x00004000 /* 0.25 = 1/4 */
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static inline enum malidp_scaling_coeff_set
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malidp_se_select_coeffs(u32 upscale_factor)
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{
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return (upscale_factor >= FP_1_00000) ? MALIDP_UPSCALING_COEFFS :
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(upscale_factor >= FP_0_66667) ? MALIDP_DOWNSCALING_1_5_COEFFS :
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(upscale_factor >= FP_0_50000) ? MALIDP_DOWNSCALING_2_COEFFS :
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(upscale_factor >= FP_0_36363) ? MALIDP_DOWNSCALING_2_75_COEFFS :
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MALIDP_DOWNSCALING_4_COEFFS;
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}
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#undef FP_0_25000
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#undef FP_0_36363
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#undef FP_0_50000
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#undef FP_0_66667
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#undef FP_1_00000
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static inline void malidp_se_set_enh_coeffs(struct malidp_hw_device *hwdev)
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{
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static const s32 enhancer_coeffs[] = {
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-8, -8, -8, -8, 128, -8, -8, -8, -8
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};
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u32 val = MALIDP_SE_SET_ENH_LIMIT_LOW(MALIDP_SE_ENH_LOW_LEVEL) |
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MALIDP_SE_SET_ENH_LIMIT_HIGH(MALIDP_SE_ENH_HIGH_LEVEL);
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u32 image_enh = hwdev->hw->map.se_base +
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((hwdev->hw->map.features & MALIDP_REGMAP_HAS_CLEARIRQ) ?
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0x10 : 0xC) + MALIDP_SE_IMAGE_ENH;
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u32 enh_coeffs = image_enh + MALIDP_SE_ENH_COEFF0;
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int i;
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malidp_hw_write(hwdev, val, image_enh);
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for (i = 0; i < ARRAY_SIZE(enhancer_coeffs); ++i)
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malidp_hw_write(hwdev, enhancer_coeffs[i], enh_coeffs + i * 4);
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}
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/*
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* background color components are defined as 12bits values,
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* they will be shifted right when stored on hardware that
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* supports only 8bits per channel
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*/
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#define MALIDP_BGND_COLOR_R 0x000
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#define MALIDP_BGND_COLOR_G 0x000
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#define MALIDP_BGND_COLOR_B 0x000
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#define MALIDP_COLORADJ_NUM_COEFFS 12
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#define MALIDP_COEFFTAB_NUM_COEFFS 64
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#define MALIDP_GAMMA_LUT_SIZE 4096
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#endif /* __MALIDP_HW_H__ */
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