malidp_hw.c 31.4 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14
/*
 * (C) COPYRIGHT 2016 ARM Limited. All rights reserved.
 * Author: Liviu Dudau <Liviu.Dudau@arm.com>
 *
 * This program is free software and is provided to you under the terms of the
 * GNU General Public License version 2 as published by the Free Software
 * Foundation, and any use by you of this program is subject to the terms
 * of such GNU licence.
 *
 * ARM Mali DP500/DP550/DP650 hardware manipulation routines. This is where
 * the difference between various versions of the hardware is being dealt with
 * in an attempt to provide to the rest of the driver code a unified view
 */

15
#include <linux/clk.h>
16 17 18 19 20 21 22 23 24
#include <linux/types.h>
#include <linux/io.h>
#include <drm/drmP.h>
#include <video/videomode.h>
#include <video/display_timing.h>

#include "malidp_drv.h"
#include "malidp_hw.h"

25
static const struct malidp_format_id malidp500_de_formats[] = {
26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72
	/*    fourcc,   layers supporting the format,     internal id  */
	{ DRM_FORMAT_ARGB2101010, DE_VIDEO1 | DE_GRAPHICS1 | DE_GRAPHICS2,  0 },
	{ DRM_FORMAT_ABGR2101010, DE_VIDEO1 | DE_GRAPHICS1 | DE_GRAPHICS2,  1 },
	{ DRM_FORMAT_ARGB8888, DE_VIDEO1 | DE_GRAPHICS1 | DE_GRAPHICS2,  2 },
	{ DRM_FORMAT_ABGR8888, DE_VIDEO1 | DE_GRAPHICS1 | DE_GRAPHICS2,  3 },
	{ DRM_FORMAT_XRGB8888, DE_VIDEO1 | DE_GRAPHICS1 | DE_GRAPHICS2,  4 },
	{ DRM_FORMAT_XBGR8888, DE_VIDEO1 | DE_GRAPHICS1 | DE_GRAPHICS2,  5 },
	{ DRM_FORMAT_RGB888, DE_VIDEO1 | DE_GRAPHICS1 | DE_GRAPHICS2,  6 },
	{ DRM_FORMAT_BGR888, DE_VIDEO1 | DE_GRAPHICS1 | DE_GRAPHICS2,  7 },
	{ DRM_FORMAT_RGBA5551, DE_VIDEO1 | DE_GRAPHICS1 | DE_GRAPHICS2,  8 },
	{ DRM_FORMAT_ABGR1555, DE_VIDEO1 | DE_GRAPHICS1 | DE_GRAPHICS2,  9 },
	{ DRM_FORMAT_RGB565, DE_VIDEO1 | DE_GRAPHICS1 | DE_GRAPHICS2, 10 },
	{ DRM_FORMAT_BGR565, DE_VIDEO1 | DE_GRAPHICS1 | DE_GRAPHICS2, 11 },
	{ DRM_FORMAT_UYVY, DE_VIDEO1, 12 },
	{ DRM_FORMAT_YUYV, DE_VIDEO1, 13 },
	{ DRM_FORMAT_NV12, DE_VIDEO1, 14 },
	{ DRM_FORMAT_YUV420, DE_VIDEO1, 15 },
};

#define MALIDP_ID(__group, __format) \
	((((__group) & 0x7) << 3) | ((__format) & 0x7))

#define MALIDP_COMMON_FORMATS \
	/*    fourcc,   layers supporting the format,      internal id   */ \
	{ DRM_FORMAT_ARGB2101010, DE_VIDEO1 | DE_GRAPHICS1 | DE_VIDEO2, MALIDP_ID(0, 0) }, \
	{ DRM_FORMAT_ABGR2101010, DE_VIDEO1 | DE_GRAPHICS1 | DE_VIDEO2, MALIDP_ID(0, 1) }, \
	{ DRM_FORMAT_RGBA1010102, DE_VIDEO1 | DE_GRAPHICS1 | DE_VIDEO2, MALIDP_ID(0, 2) }, \
	{ DRM_FORMAT_BGRA1010102, DE_VIDEO1 | DE_GRAPHICS1 | DE_VIDEO2, MALIDP_ID(0, 3) }, \
	{ DRM_FORMAT_ARGB8888, DE_VIDEO1 | DE_GRAPHICS1 | DE_VIDEO2 | DE_SMART, MALIDP_ID(1, 0) }, \
	{ DRM_FORMAT_ABGR8888, DE_VIDEO1 | DE_GRAPHICS1 | DE_VIDEO2 | DE_SMART, MALIDP_ID(1, 1) }, \
	{ DRM_FORMAT_RGBA8888, DE_VIDEO1 | DE_GRAPHICS1 | DE_VIDEO2 | DE_SMART, MALIDP_ID(1, 2) }, \
	{ DRM_FORMAT_BGRA8888, DE_VIDEO1 | DE_GRAPHICS1 | DE_VIDEO2 | DE_SMART, MALIDP_ID(1, 3) }, \
	{ DRM_FORMAT_XRGB8888, DE_VIDEO1 | DE_GRAPHICS1 | DE_VIDEO2 | DE_SMART, MALIDP_ID(2, 0) }, \
	{ DRM_FORMAT_XBGR8888, DE_VIDEO1 | DE_GRAPHICS1 | DE_VIDEO2 | DE_SMART, MALIDP_ID(2, 1) }, \
	{ DRM_FORMAT_RGBX8888, DE_VIDEO1 | DE_GRAPHICS1 | DE_VIDEO2 | DE_SMART, MALIDP_ID(2, 2) }, \
	{ DRM_FORMAT_BGRX8888, DE_VIDEO1 | DE_GRAPHICS1 | DE_VIDEO2 | DE_SMART, MALIDP_ID(2, 3) }, \
	{ DRM_FORMAT_RGB888, DE_VIDEO1 | DE_GRAPHICS1 | DE_VIDEO2, MALIDP_ID(3, 0) }, \
	{ DRM_FORMAT_BGR888, DE_VIDEO1 | DE_GRAPHICS1 | DE_VIDEO2, MALIDP_ID(3, 1) }, \
	{ DRM_FORMAT_RGBA5551, DE_VIDEO1 | DE_GRAPHICS1 | DE_VIDEO2, MALIDP_ID(4, 0) }, \
	{ DRM_FORMAT_ABGR1555, DE_VIDEO1 | DE_GRAPHICS1 | DE_VIDEO2, MALIDP_ID(4, 1) }, \
	{ DRM_FORMAT_RGB565, DE_VIDEO1 | DE_GRAPHICS1 | DE_VIDEO2, MALIDP_ID(4, 2) }, \
	{ DRM_FORMAT_BGR565, DE_VIDEO1 | DE_GRAPHICS1 | DE_VIDEO2, MALIDP_ID(4, 3) }, \
	{ DRM_FORMAT_YUYV, DE_VIDEO1 | DE_VIDEO2, MALIDP_ID(5, 2) },	\
	{ DRM_FORMAT_UYVY, DE_VIDEO1 | DE_VIDEO2, MALIDP_ID(5, 3) },	\
	{ DRM_FORMAT_NV12, DE_VIDEO1 | DE_VIDEO2, MALIDP_ID(5, 6) },	\
	{ DRM_FORMAT_YUV420, DE_VIDEO1 | DE_VIDEO2, MALIDP_ID(5, 7) }

73
static const struct malidp_format_id malidp550_de_formats[] = {
74 75 76 77
	MALIDP_COMMON_FORMATS,
};

static const struct malidp_layer malidp500_layers[] = {
78 79 80
	{ DE_VIDEO1, MALIDP500_DE_LV_BASE, MALIDP500_DE_LV_PTR_BASE, MALIDP_DE_LV_STRIDE0, MALIDP500_LV_YUV2RGB },
	{ DE_GRAPHICS1, MALIDP500_DE_LG1_BASE, MALIDP500_DE_LG1_PTR_BASE, MALIDP_DE_LG_STRIDE, 0 },
	{ DE_GRAPHICS2, MALIDP500_DE_LG2_BASE, MALIDP500_DE_LG2_PTR_BASE, MALIDP_DE_LG_STRIDE, 0 },
81 82 83
};

static const struct malidp_layer malidp550_layers[] = {
84 85 86 87
	{ DE_VIDEO1, MALIDP550_DE_LV1_BASE, MALIDP550_DE_LV1_PTR_BASE, MALIDP_DE_LV_STRIDE0, MALIDP550_LV_YUV2RGB },
	{ DE_GRAPHICS1, MALIDP550_DE_LG_BASE, MALIDP550_DE_LG_PTR_BASE, MALIDP_DE_LG_STRIDE, 0 },
	{ DE_VIDEO2, MALIDP550_DE_LV2_BASE, MALIDP550_DE_LV2_PTR_BASE, MALIDP_DE_LV_STRIDE0, MALIDP550_LV_YUV2RGB },
	{ DE_SMART, MALIDP550_DE_LS_BASE, MALIDP550_DE_LS_PTR_BASE, MALIDP550_DE_LS_R1_STRIDE, 0 },
88 89
};

90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163
#define SE_N_SCALING_COEFFS	96
static const u16 dp500_se_scaling_coeffs[][SE_N_SCALING_COEFFS] = {
	[MALIDP_UPSCALING_COEFFS - 1] = {
		0x0000, 0x0001, 0x0007, 0x0011, 0x001e, 0x002e, 0x003f, 0x0052,
		0x0064, 0x0073, 0x007d, 0x0080, 0x007a, 0x006c, 0x0053, 0x002f,
		0x0000, 0x3fc6, 0x3f83, 0x3f39, 0x3eea, 0x3e9b, 0x3e4f, 0x3e0a,
		0x3dd4, 0x3db0, 0x3da2, 0x3db1, 0x3dde, 0x3e2f, 0x3ea5, 0x3f40,
		0x0000, 0x00e5, 0x01ee, 0x0315, 0x0456, 0x05aa, 0x0709, 0x086c,
		0x09c9, 0x0b15, 0x0c4a, 0x0d5d, 0x0e4a, 0x0f06, 0x0f91, 0x0fe5,
		0x1000, 0x0fe5, 0x0f91, 0x0f06, 0x0e4a, 0x0d5d, 0x0c4a, 0x0b15,
		0x09c9, 0x086c, 0x0709, 0x05aa, 0x0456, 0x0315, 0x01ee, 0x00e5,
		0x0000, 0x3f40, 0x3ea5, 0x3e2f, 0x3dde, 0x3db1, 0x3da2, 0x3db0,
		0x3dd4, 0x3e0a, 0x3e4f, 0x3e9b, 0x3eea, 0x3f39, 0x3f83, 0x3fc6,
		0x0000, 0x002f, 0x0053, 0x006c, 0x007a, 0x0080, 0x007d, 0x0073,
		0x0064, 0x0052, 0x003f, 0x002e, 0x001e, 0x0011, 0x0007, 0x0001
	},
	[MALIDP_DOWNSCALING_1_5_COEFFS - 1] = {
		0x0059, 0x004f, 0x0041, 0x002e, 0x0016, 0x3ffb, 0x3fd9, 0x3fb4,
		0x3f8c, 0x3f62, 0x3f36, 0x3f09, 0x3edd, 0x3eb3, 0x3e8d, 0x3e6c,
		0x3e52, 0x3e3f, 0x3e35, 0x3e37, 0x3e46, 0x3e61, 0x3e8c, 0x3ec5,
		0x3f0f, 0x3f68, 0x3fd1, 0x004a, 0x00d3, 0x0169, 0x020b, 0x02b8,
		0x036e, 0x042d, 0x04f2, 0x05b9, 0x0681, 0x0745, 0x0803, 0x08ba,
		0x0965, 0x0a03, 0x0a91, 0x0b0d, 0x0b75, 0x0bc6, 0x0c00, 0x0c20,
		0x0c28, 0x0c20, 0x0c00, 0x0bc6, 0x0b75, 0x0b0d, 0x0a91, 0x0a03,
		0x0965, 0x08ba, 0x0803, 0x0745, 0x0681, 0x05b9, 0x04f2, 0x042d,
		0x036e, 0x02b8, 0x020b, 0x0169, 0x00d3, 0x004a, 0x3fd1, 0x3f68,
		0x3f0f, 0x3ec5, 0x3e8c, 0x3e61, 0x3e46, 0x3e37, 0x3e35, 0x3e3f,
		0x3e52, 0x3e6c, 0x3e8d, 0x3eb3, 0x3edd, 0x3f09, 0x3f36, 0x3f62,
		0x3f8c, 0x3fb4, 0x3fd9, 0x3ffb, 0x0016, 0x002e, 0x0041, 0x004f
	},
	[MALIDP_DOWNSCALING_2_COEFFS - 1] = {
		0x3f19, 0x3f03, 0x3ef0, 0x3edf, 0x3ed0, 0x3ec5, 0x3ebd, 0x3eb9,
		0x3eb9, 0x3ebf, 0x3eca, 0x3ed9, 0x3eef, 0x3f0a, 0x3f2c, 0x3f52,
		0x3f7f, 0x3fb0, 0x3fe8, 0x0026, 0x006a, 0x00b4, 0x0103, 0x0158,
		0x01b1, 0x020d, 0x026c, 0x02cd, 0x032f, 0x0392, 0x03f4, 0x0455,
		0x04b4, 0x051e, 0x0585, 0x05eb, 0x064c, 0x06a8, 0x06fe, 0x074e,
		0x0796, 0x07d5, 0x080c, 0x0839, 0x085c, 0x0875, 0x0882, 0x0887,
		0x0881, 0x0887, 0x0882, 0x0875, 0x085c, 0x0839, 0x080c, 0x07d5,
		0x0796, 0x074e, 0x06fe, 0x06a8, 0x064c, 0x05eb, 0x0585, 0x051e,
		0x04b4, 0x0455, 0x03f4, 0x0392, 0x032f, 0x02cd, 0x026c, 0x020d,
		0x01b1, 0x0158, 0x0103, 0x00b4, 0x006a, 0x0026, 0x3fe8, 0x3fb0,
		0x3f7f, 0x3f52, 0x3f2c, 0x3f0a, 0x3eef, 0x3ed9, 0x3eca, 0x3ebf,
		0x3eb9, 0x3eb9, 0x3ebd, 0x3ec5, 0x3ed0, 0x3edf, 0x3ef0, 0x3f03
	},
	[MALIDP_DOWNSCALING_2_75_COEFFS - 1] = {
		0x3f51, 0x3f60, 0x3f71, 0x3f84, 0x3f98, 0x3faf, 0x3fc8, 0x3fe3,
		0x0000, 0x001f, 0x0040, 0x0064, 0x008a, 0x00b1, 0x00da, 0x0106,
		0x0133, 0x0160, 0x018e, 0x01bd, 0x01ec, 0x021d, 0x024e, 0x0280,
		0x02b2, 0x02e4, 0x0317, 0x0349, 0x037c, 0x03ad, 0x03df, 0x0410,
		0x0440, 0x0468, 0x048f, 0x04b3, 0x04d6, 0x04f8, 0x0516, 0x0533,
		0x054e, 0x0566, 0x057c, 0x0590, 0x05a0, 0x05ae, 0x05ba, 0x05c3,
		0x05c9, 0x05c3, 0x05ba, 0x05ae, 0x05a0, 0x0590, 0x057c, 0x0566,
		0x054e, 0x0533, 0x0516, 0x04f8, 0x04d6, 0x04b3, 0x048f, 0x0468,
		0x0440, 0x0410, 0x03df, 0x03ad, 0x037c, 0x0349, 0x0317, 0x02e4,
		0x02b2, 0x0280, 0x024e, 0x021d, 0x01ec, 0x01bd, 0x018e, 0x0160,
		0x0133, 0x0106, 0x00da, 0x00b1, 0x008a, 0x0064, 0x0040, 0x001f,
		0x0000, 0x3fe3, 0x3fc8, 0x3faf, 0x3f98, 0x3f84, 0x3f71, 0x3f60
	},
	[MALIDP_DOWNSCALING_4_COEFFS - 1] = {
		0x0094, 0x00a9, 0x00be, 0x00d4, 0x00ea, 0x0101, 0x0118, 0x012f,
		0x0148, 0x0160, 0x017a, 0x0193, 0x01ae, 0x01c8, 0x01e4, 0x01ff,
		0x021c, 0x0233, 0x024a, 0x0261, 0x0278, 0x028f, 0x02a6, 0x02bd,
		0x02d4, 0x02eb, 0x0302, 0x0319, 0x032f, 0x0346, 0x035d, 0x0374,
		0x038a, 0x0397, 0x03a3, 0x03af, 0x03bb, 0x03c6, 0x03d1, 0x03db,
		0x03e4, 0x03ed, 0x03f6, 0x03fe, 0x0406, 0x040d, 0x0414, 0x041a,
		0x0420, 0x041a, 0x0414, 0x040d, 0x0406, 0x03fe, 0x03f6, 0x03ed,
		0x03e4, 0x03db, 0x03d1, 0x03c6, 0x03bb, 0x03af, 0x03a3, 0x0397,
		0x038a, 0x0374, 0x035d, 0x0346, 0x032f, 0x0319, 0x0302, 0x02eb,
		0x02d4, 0x02bd, 0x02a6, 0x028f, 0x0278, 0x0261, 0x024a, 0x0233,
		0x021c, 0x01ff, 0x01e4, 0x01c8, 0x01ae, 0x0193, 0x017a, 0x0160,
		0x0148, 0x012f, 0x0118, 0x0101, 0x00ea, 0x00d4, 0x00be, 0x00a9
	},
};

164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185
#define MALIDP_DE_DEFAULT_PREFETCH_START	5

static int malidp500_query_hw(struct malidp_hw_device *hwdev)
{
	u32 conf = malidp_hw_read(hwdev, MALIDP500_CONFIG_ID);
	/* bit 4 of the CONFIG_ID register holds the line size multiplier */
	u8 ln_size_mult = conf & 0x10 ? 2 : 1;

	hwdev->min_line_size = 2;
	hwdev->max_line_size = SZ_2K * ln_size_mult;
	hwdev->rotation_memory[0] = SZ_1K * 64 * ln_size_mult;
	hwdev->rotation_memory[1] = 0; /* no second rotation memory bank */

	return 0;
}

static void malidp500_enter_config_mode(struct malidp_hw_device *hwdev)
{
	u32 status, count = 100;

	malidp_hw_setbits(hwdev, MALIDP500_DC_CONFIG_REQ, MALIDP500_DC_CONTROL);
	while (count) {
186
		status = malidp_hw_read(hwdev, hwdev->hw->map.dc_base + MALIDP_REG_STATUS);
187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202
		if ((status & MALIDP500_DC_CONFIG_REQ) == MALIDP500_DC_CONFIG_REQ)
			break;
		/*
		 * entering config mode can take as long as the rendering
		 * of a full frame, hence the long sleep here
		 */
		usleep_range(1000, 10000);
		count--;
	}
	WARN(count == 0, "timeout while entering config mode");
}

static void malidp500_leave_config_mode(struct malidp_hw_device *hwdev)
{
	u32 status, count = 100;

203
	malidp_hw_clearbits(hwdev, MALIDP_CFG_VALID, MALIDP500_CONFIG_VALID);
204 205
	malidp_hw_clearbits(hwdev, MALIDP500_DC_CONFIG_REQ, MALIDP500_DC_CONTROL);
	while (count) {
206
		status = malidp_hw_read(hwdev, hwdev->hw->map.dc_base + MALIDP_REG_STATUS);
207 208 209 210 211 212 213 214 215 216 217 218
		if ((status & MALIDP500_DC_CONFIG_REQ) == 0)
			break;
		usleep_range(100, 1000);
		count--;
	}
	WARN(count == 0, "timeout while leaving config mode");
}

static bool malidp500_in_config_mode(struct malidp_hw_device *hwdev)
{
	u32 status;

219
	status = malidp_hw_read(hwdev, hwdev->hw->map.dc_base + MALIDP_REG_STATUS);
220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285
	if ((status & MALIDP500_DC_CONFIG_REQ) == MALIDP500_DC_CONFIG_REQ)
		return true;

	return false;
}

static void malidp500_set_config_valid(struct malidp_hw_device *hwdev)
{
	malidp_hw_setbits(hwdev, MALIDP_CFG_VALID, MALIDP500_CONFIG_VALID);
}

static void malidp500_modeset(struct malidp_hw_device *hwdev, struct videomode *mode)
{
	u32 val = 0;

	malidp_hw_clearbits(hwdev, MALIDP500_DC_CLEAR_MASK, MALIDP500_DC_CONTROL);
	if (mode->flags & DISPLAY_FLAGS_HSYNC_HIGH)
		val |= MALIDP500_HSYNCPOL;
	if (mode->flags & DISPLAY_FLAGS_VSYNC_HIGH)
		val |= MALIDP500_VSYNCPOL;
	val |= MALIDP_DE_DEFAULT_PREFETCH_START;
	malidp_hw_setbits(hwdev, val, MALIDP500_DC_CONTROL);

	/*
	 * Mali-DP500 encodes the background color like this:
	 *    - red   @ MALIDP500_BGND_COLOR[12:0]
	 *    - green @ MALIDP500_BGND_COLOR[27:16]
	 *    - blue  @ (MALIDP500_BGND_COLOR + 4)[12:0]
	 */
	val = ((MALIDP_BGND_COLOR_G & 0xfff) << 16) |
	      (MALIDP_BGND_COLOR_R & 0xfff);
	malidp_hw_write(hwdev, val, MALIDP500_BGND_COLOR);
	malidp_hw_write(hwdev, MALIDP_BGND_COLOR_B, MALIDP500_BGND_COLOR + 4);

	val = MALIDP_DE_H_FRONTPORCH(mode->hfront_porch) |
		MALIDP_DE_H_BACKPORCH(mode->hback_porch);
	malidp_hw_write(hwdev, val, MALIDP500_TIMINGS_BASE + MALIDP_DE_H_TIMINGS);

	val = MALIDP500_DE_V_FRONTPORCH(mode->vfront_porch) |
		MALIDP_DE_V_BACKPORCH(mode->vback_porch);
	malidp_hw_write(hwdev, val, MALIDP500_TIMINGS_BASE + MALIDP_DE_V_TIMINGS);

	val = MALIDP_DE_H_SYNCWIDTH(mode->hsync_len) |
		MALIDP_DE_V_SYNCWIDTH(mode->vsync_len);
	malidp_hw_write(hwdev, val, MALIDP500_TIMINGS_BASE + MALIDP_DE_SYNC_WIDTH);

	val = MALIDP_DE_H_ACTIVE(mode->hactive) | MALIDP_DE_V_ACTIVE(mode->vactive);
	malidp_hw_write(hwdev, val, MALIDP500_TIMINGS_BASE + MALIDP_DE_HV_ACTIVE);

	if (mode->flags & DISPLAY_FLAGS_INTERLACED)
		malidp_hw_setbits(hwdev, MALIDP_DISP_FUNC_ILACED, MALIDP_DE_DISPLAY_FUNC);
	else
		malidp_hw_clearbits(hwdev, MALIDP_DISP_FUNC_ILACED, MALIDP_DE_DISPLAY_FUNC);
}

static int malidp500_rotmem_required(struct malidp_hw_device *hwdev, u16 w, u16 h, u32 fmt)
{
	/* RGB888 or BGR888 can't be rotated */
	if ((fmt == DRM_FORMAT_RGB888) || (fmt == DRM_FORMAT_BGR888))
		return -EINVAL;

	/*
	 * Each layer needs enough rotation memory to fit 8 lines
	 * worth of pixel data. Required size is then:
	 *    size = rotated_width * (bpp / 8) * 8;
	 */
286
	return w * drm_format_plane_cpp(fmt, 0) * 8;
287 288
}

289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337
static void malidp500_se_write_pp_coefftab(struct malidp_hw_device *hwdev,
					   u32 direction,
					   u16 addr,
					   u8 coeffs_id)
{
	int i;
	u16 scaling_control = MALIDP500_SE_CONTROL + MALIDP_SE_SCALING_CONTROL;

	malidp_hw_write(hwdev,
			direction | (addr & MALIDP_SE_COEFFTAB_ADDR_MASK),
			scaling_control + MALIDP_SE_COEFFTAB_ADDR);
	for (i = 0; i < ARRAY_SIZE(dp500_se_scaling_coeffs); ++i)
		malidp_hw_write(hwdev, MALIDP_SE_SET_COEFFTAB_DATA(
				dp500_se_scaling_coeffs[coeffs_id][i]),
				scaling_control + MALIDP_SE_COEFFTAB_DATA);
}

static int malidp500_se_set_scaling_coeffs(struct malidp_hw_device *hwdev,
					   struct malidp_se_config *se_config,
					   struct malidp_se_config *old_config)
{
	/* Get array indices into dp500_se_scaling_coeffs. */
	u8 h = (u8)se_config->hcoeff - 1;
	u8 v = (u8)se_config->vcoeff - 1;

	if (WARN_ON(h >= ARRAY_SIZE(dp500_se_scaling_coeffs) ||
		    v >= ARRAY_SIZE(dp500_se_scaling_coeffs)))
		return -EINVAL;

	if ((h == v) && (se_config->hcoeff != old_config->hcoeff ||
			 se_config->vcoeff != old_config->vcoeff)) {
		malidp500_se_write_pp_coefftab(hwdev,
					       (MALIDP_SE_V_COEFFTAB |
						MALIDP_SE_H_COEFFTAB),
					       0, v);
	} else {
		if (se_config->vcoeff != old_config->vcoeff)
			malidp500_se_write_pp_coefftab(hwdev,
						       MALIDP_SE_V_COEFFTAB,
						       0, v);
		if (se_config->hcoeff != old_config->hcoeff)
			malidp500_se_write_pp_coefftab(hwdev,
						       MALIDP_SE_H_COEFFTAB,
						       0, h);
	}

	return 0;
}

338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370
static long malidp500_se_calc_mclk(struct malidp_hw_device *hwdev,
				   struct malidp_se_config *se_config,
				   struct videomode *vm)
{
	unsigned long mclk;
	unsigned long pxlclk = vm->pixelclock; /* Hz */
	unsigned long htotal = vm->hactive + vm->hfront_porch +
			       vm->hback_porch + vm->hsync_len;
	unsigned long input_size = se_config->input_w * se_config->input_h;
	unsigned long a = 10;
	long ret;

	/*
	 * mclk = max(a, 1.5) * pxlclk
	 *
	 * To avoid float calculaiton, using 15 instead of 1.5 and div by
	 * 10 to get mclk.
	 */
	if (se_config->scale_enable) {
		a = 15 * input_size / (htotal * se_config->output_h);
		if (a < 15)
			a = 15;
	}
	mclk = a * pxlclk / 10;
	ret = clk_get_rate(hwdev->mclk);
	if (ret < mclk) {
		DRM_DEBUG_DRIVER("mclk requirement of %lu kHz can't be met.\n",
				 mclk / 1000);
		return -EINVAL;
	}
	return ret;
}

371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409
static int malidp550_query_hw(struct malidp_hw_device *hwdev)
{
	u32 conf = malidp_hw_read(hwdev, MALIDP550_CONFIG_ID);
	u8 ln_size = (conf >> 4) & 0x3, rsize;

	hwdev->min_line_size = 2;

	switch (ln_size) {
	case 0:
		hwdev->max_line_size = SZ_2K;
		/* two banks of 64KB for rotation memory */
		rsize = 64;
		break;
	case 1:
		hwdev->max_line_size = SZ_4K;
		/* two banks of 128KB for rotation memory */
		rsize = 128;
		break;
	case 2:
		hwdev->max_line_size = 1280;
		/* two banks of 40KB for rotation memory */
		rsize = 40;
		break;
	case 3:
		/* reserved value */
		hwdev->max_line_size = 0;
		return -EINVAL;
	}

	hwdev->rotation_memory[0] = hwdev->rotation_memory[1] = rsize * SZ_1K;
	return 0;
}

static void malidp550_enter_config_mode(struct malidp_hw_device *hwdev)
{
	u32 status, count = 100;

	malidp_hw_setbits(hwdev, MALIDP550_DC_CONFIG_REQ, MALIDP550_DC_CONTROL);
	while (count) {
410
		status = malidp_hw_read(hwdev, hwdev->hw->map.dc_base + MALIDP_REG_STATUS);
411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426
		if ((status & MALIDP550_DC_CONFIG_REQ) == MALIDP550_DC_CONFIG_REQ)
			break;
		/*
		 * entering config mode can take as long as the rendering
		 * of a full frame, hence the long sleep here
		 */
		usleep_range(1000, 10000);
		count--;
	}
	WARN(count == 0, "timeout while entering config mode");
}

static void malidp550_leave_config_mode(struct malidp_hw_device *hwdev)
{
	u32 status, count = 100;

427
	malidp_hw_clearbits(hwdev, MALIDP_CFG_VALID, MALIDP550_CONFIG_VALID);
428 429
	malidp_hw_clearbits(hwdev, MALIDP550_DC_CONFIG_REQ, MALIDP550_DC_CONTROL);
	while (count) {
430
		status = malidp_hw_read(hwdev, hwdev->hw->map.dc_base + MALIDP_REG_STATUS);
431 432 433 434 435 436 437 438 439 440 441 442
		if ((status & MALIDP550_DC_CONFIG_REQ) == 0)
			break;
		usleep_range(100, 1000);
		count--;
	}
	WARN(count == 0, "timeout while leaving config mode");
}

static bool malidp550_in_config_mode(struct malidp_hw_device *hwdev)
{
	u32 status;

443
	status = malidp_hw_read(hwdev, hwdev->hw->map.dc_base + MALIDP_REG_STATUS);
444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543
	if ((status & MALIDP550_DC_CONFIG_REQ) == MALIDP550_DC_CONFIG_REQ)
		return true;

	return false;
}

static void malidp550_set_config_valid(struct malidp_hw_device *hwdev)
{
	malidp_hw_setbits(hwdev, MALIDP_CFG_VALID, MALIDP550_CONFIG_VALID);
}

static void malidp550_modeset(struct malidp_hw_device *hwdev, struct videomode *mode)
{
	u32 val = MALIDP_DE_DEFAULT_PREFETCH_START;

	malidp_hw_write(hwdev, val, MALIDP550_DE_CONTROL);
	/*
	 * Mali-DP550 and Mali-DP650 encode the background color like this:
	 *   - red   @ MALIDP550_DE_BGND_COLOR[23:16]
	 *   - green @ MALIDP550_DE_BGND_COLOR[15:8]
	 *   - blue  @ MALIDP550_DE_BGND_COLOR[7:0]
	 *
	 * We need to truncate the least significant 4 bits from the default
	 * MALIDP_BGND_COLOR_x values
	 */
	val = (((MALIDP_BGND_COLOR_R >> 4) & 0xff) << 16) |
	      (((MALIDP_BGND_COLOR_G >> 4) & 0xff) << 8) |
	      ((MALIDP_BGND_COLOR_B >> 4) & 0xff);
	malidp_hw_write(hwdev, val, MALIDP550_DE_BGND_COLOR);

	val = MALIDP_DE_H_FRONTPORCH(mode->hfront_porch) |
		MALIDP_DE_H_BACKPORCH(mode->hback_porch);
	malidp_hw_write(hwdev, val, MALIDP550_TIMINGS_BASE + MALIDP_DE_H_TIMINGS);

	val = MALIDP550_DE_V_FRONTPORCH(mode->vfront_porch) |
		MALIDP_DE_V_BACKPORCH(mode->vback_porch);
	malidp_hw_write(hwdev, val, MALIDP550_TIMINGS_BASE + MALIDP_DE_V_TIMINGS);

	val = MALIDP_DE_H_SYNCWIDTH(mode->hsync_len) |
		MALIDP_DE_V_SYNCWIDTH(mode->vsync_len);
	if (mode->flags & DISPLAY_FLAGS_HSYNC_HIGH)
		val |= MALIDP550_HSYNCPOL;
	if (mode->flags & DISPLAY_FLAGS_VSYNC_HIGH)
		val |= MALIDP550_VSYNCPOL;
	malidp_hw_write(hwdev, val, MALIDP550_TIMINGS_BASE + MALIDP_DE_SYNC_WIDTH);

	val = MALIDP_DE_H_ACTIVE(mode->hactive) | MALIDP_DE_V_ACTIVE(mode->vactive);
	malidp_hw_write(hwdev, val, MALIDP550_TIMINGS_BASE + MALIDP_DE_HV_ACTIVE);

	if (mode->flags & DISPLAY_FLAGS_INTERLACED)
		malidp_hw_setbits(hwdev, MALIDP_DISP_FUNC_ILACED, MALIDP_DE_DISPLAY_FUNC);
	else
		malidp_hw_clearbits(hwdev, MALIDP_DISP_FUNC_ILACED, MALIDP_DE_DISPLAY_FUNC);
}

static int malidp550_rotmem_required(struct malidp_hw_device *hwdev, u16 w, u16 h, u32 fmt)
{
	u32 bytes_per_col;

	/* raw RGB888 or BGR888 can't be rotated */
	if ((fmt == DRM_FORMAT_RGB888) || (fmt == DRM_FORMAT_BGR888))
		return -EINVAL;

	switch (fmt) {
	/* 8 lines at 4 bytes per pixel */
	case DRM_FORMAT_ARGB2101010:
	case DRM_FORMAT_ABGR2101010:
	case DRM_FORMAT_RGBA1010102:
	case DRM_FORMAT_BGRA1010102:
	case DRM_FORMAT_ARGB8888:
	case DRM_FORMAT_ABGR8888:
	case DRM_FORMAT_RGBA8888:
	case DRM_FORMAT_BGRA8888:
	case DRM_FORMAT_XRGB8888:
	case DRM_FORMAT_XBGR8888:
	case DRM_FORMAT_RGBX8888:
	case DRM_FORMAT_BGRX8888:
	case DRM_FORMAT_RGB888:
	case DRM_FORMAT_BGR888:
	/* 16 lines at 2 bytes per pixel */
	case DRM_FORMAT_RGBA5551:
	case DRM_FORMAT_ABGR1555:
	case DRM_FORMAT_RGB565:
	case DRM_FORMAT_BGR565:
	case DRM_FORMAT_UYVY:
	case DRM_FORMAT_YUYV:
		bytes_per_col = 32;
		break;
	/* 16 lines at 1.5 bytes per pixel */
	case DRM_FORMAT_NV12:
	case DRM_FORMAT_YUV420:
		bytes_per_col = 24;
		break;
	default:
		return -EINVAL;
	}

	return w * bytes_per_col;
}

544 545 546 547 548 549 550 551 552 553 554 555 556 557
static int malidp550_se_set_scaling_coeffs(struct malidp_hw_device *hwdev,
					   struct malidp_se_config *se_config,
					   struct malidp_se_config *old_config)
{
	u32 mask = MALIDP550_SE_CTL_VCSEL(MALIDP550_SE_CTL_SEL_MASK) |
		   MALIDP550_SE_CTL_HCSEL(MALIDP550_SE_CTL_SEL_MASK);
	u32 new_value = MALIDP550_SE_CTL_VCSEL(se_config->vcoeff) |
			MALIDP550_SE_CTL_HCSEL(se_config->hcoeff);

	malidp_hw_clearbits(hwdev, mask, MALIDP550_SE_CONTROL);
	malidp_hw_setbits(hwdev, new_value, MALIDP550_SE_CONTROL);
	return 0;
}

558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590
static long malidp550_se_calc_mclk(struct malidp_hw_device *hwdev,
				   struct malidp_se_config *se_config,
				   struct videomode *vm)
{
	unsigned long mclk;
	unsigned long pxlclk = vm->pixelclock;
	unsigned long htotal = vm->hactive + vm->hfront_porch +
			       vm->hback_porch + vm->hsync_len;
	unsigned long numerator = 1, denominator = 1;
	long ret;

	if (se_config->scale_enable) {
		numerator = max(se_config->input_w, se_config->output_w) *
			    se_config->input_h;
		numerator += se_config->output_w *
			     (se_config->output_h -
			      min(se_config->input_h, se_config->output_h));
		denominator = (htotal - 2) * se_config->output_h;
	}

	/* mclk can't be slower than pxlclk. */
	if (numerator < denominator)
		numerator = denominator = 1;
	mclk = (pxlclk * numerator) / denominator;
	ret = clk_get_rate(hwdev->mclk);
	if (ret < mclk) {
		DRM_DEBUG_DRIVER("mclk requirement of %lu kHz can't be met.\n",
				 mclk / 1000);
		return -EINVAL;
	}
	return ret;
}

591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618
static int malidp650_query_hw(struct malidp_hw_device *hwdev)
{
	u32 conf = malidp_hw_read(hwdev, MALIDP550_CONFIG_ID);
	u8 ln_size = (conf >> 4) & 0x3, rsize;

	hwdev->min_line_size = 4;

	switch (ln_size) {
	case 0:
	case 2:
		/* reserved values */
		hwdev->max_line_size = 0;
		return -EINVAL;
	case 1:
		hwdev->max_line_size = SZ_4K;
		/* two banks of 128KB for rotation memory */
		rsize = 128;
		break;
	case 3:
		hwdev->max_line_size = 2560;
		/* two banks of 80KB for rotation memory */
		rsize = 80;
	}

	hwdev->rotation_memory[0] = hwdev->rotation_memory[1] = rsize * SZ_1K;
	return 0;
}

619
const struct malidp_hw malidp_device[MALIDP_MAX_DEVICES] = {
620 621
	[MALIDP_500] = {
		.map = {
622
			.coeffs_base = MALIDP500_COEFFS_BASE,
623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643
			.se_base = MALIDP500_SE_BASE,
			.dc_base = MALIDP500_DC_BASE,
			.out_depth_base = MALIDP500_OUTPUT_DEPTH,
			.features = 0,	/* no CLEARIRQ register */
			.n_layers = ARRAY_SIZE(malidp500_layers),
			.layers = malidp500_layers,
			.de_irq_map = {
				.irq_mask = MALIDP_DE_IRQ_UNDERRUN |
					    MALIDP500_DE_IRQ_AXI_ERR |
					    MALIDP500_DE_IRQ_VSYNC |
					    MALIDP500_DE_IRQ_GLOBAL,
				.vsync_irq = MALIDP500_DE_IRQ_VSYNC,
			},
			.se_irq_map = {
				.irq_mask = MALIDP500_SE_IRQ_CONF_MODE,
				.vsync_irq = 0,
			},
			.dc_irq_map = {
				.irq_mask = MALIDP500_DE_IRQ_CONF_VALID,
				.vsync_irq = MALIDP500_DE_IRQ_CONF_VALID,
			},
644 645
			.pixel_formats = malidp500_de_formats,
			.n_pixel_formats = ARRAY_SIZE(malidp500_de_formats),
646
			.bus_align_bytes = 8,
647 648 649 650 651 652 653 654
		},
		.query_hw = malidp500_query_hw,
		.enter_config_mode = malidp500_enter_config_mode,
		.leave_config_mode = malidp500_leave_config_mode,
		.in_config_mode = malidp500_in_config_mode,
		.set_config_valid = malidp500_set_config_valid,
		.modeset = malidp500_modeset,
		.rotmem_required = malidp500_rotmem_required,
655
		.se_set_scaling_coeffs = malidp500_se_set_scaling_coeffs,
656
		.se_calc_mclk = malidp500_se_calc_mclk,
657
		.features = MALIDP_DEVICE_LV_HAS_3_STRIDES,
658 659 660
	},
	[MALIDP_550] = {
		.map = {
661
			.coeffs_base = MALIDP550_COEFFS_BASE,
662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680
			.se_base = MALIDP550_SE_BASE,
			.dc_base = MALIDP550_DC_BASE,
			.out_depth_base = MALIDP550_DE_OUTPUT_DEPTH,
			.features = MALIDP_REGMAP_HAS_CLEARIRQ,
			.n_layers = ARRAY_SIZE(malidp550_layers),
			.layers = malidp550_layers,
			.de_irq_map = {
				.irq_mask = MALIDP_DE_IRQ_UNDERRUN |
					    MALIDP550_DE_IRQ_VSYNC,
				.vsync_irq = MALIDP550_DE_IRQ_VSYNC,
			},
			.se_irq_map = {
				.irq_mask = MALIDP550_SE_IRQ_EOW |
					    MALIDP550_SE_IRQ_AXI_ERR,
			},
			.dc_irq_map = {
				.irq_mask = MALIDP550_DC_IRQ_CONF_VALID,
				.vsync_irq = MALIDP550_DC_IRQ_CONF_VALID,
			},
681 682
			.pixel_formats = malidp550_de_formats,
			.n_pixel_formats = ARRAY_SIZE(malidp550_de_formats),
683
			.bus_align_bytes = 8,
684 685 686 687 688 689 690 691
		},
		.query_hw = malidp550_query_hw,
		.enter_config_mode = malidp550_enter_config_mode,
		.leave_config_mode = malidp550_leave_config_mode,
		.in_config_mode = malidp550_in_config_mode,
		.set_config_valid = malidp550_set_config_valid,
		.modeset = malidp550_modeset,
		.rotmem_required = malidp550_rotmem_required,
692
		.se_set_scaling_coeffs = malidp550_se_set_scaling_coeffs,
693
		.se_calc_mclk = malidp550_se_calc_mclk,
694
		.features = 0,
695 696 697
	},
	[MALIDP_650] = {
		.map = {
698
			.coeffs_base = MALIDP550_COEFFS_BASE,
699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718
			.se_base = MALIDP550_SE_BASE,
			.dc_base = MALIDP550_DC_BASE,
			.out_depth_base = MALIDP550_DE_OUTPUT_DEPTH,
			.features = MALIDP_REGMAP_HAS_CLEARIRQ,
			.n_layers = ARRAY_SIZE(malidp550_layers),
			.layers = malidp550_layers,
			.de_irq_map = {
				.irq_mask = MALIDP_DE_IRQ_UNDERRUN |
					    MALIDP650_DE_IRQ_DRIFT |
					    MALIDP550_DE_IRQ_VSYNC,
				.vsync_irq = MALIDP550_DE_IRQ_VSYNC,
			},
			.se_irq_map = {
				.irq_mask = MALIDP550_SE_IRQ_EOW |
					    MALIDP550_SE_IRQ_AXI_ERR,
			},
			.dc_irq_map = {
				.irq_mask = MALIDP550_DC_IRQ_CONF_VALID,
				.vsync_irq = MALIDP550_DC_IRQ_CONF_VALID,
			},
719 720
			.pixel_formats = malidp550_de_formats,
			.n_pixel_formats = ARRAY_SIZE(malidp550_de_formats),
721
			.bus_align_bytes = 16,
722 723 724 725 726 727 728 729
		},
		.query_hw = malidp650_query_hw,
		.enter_config_mode = malidp550_enter_config_mode,
		.leave_config_mode = malidp550_leave_config_mode,
		.in_config_mode = malidp550_in_config_mode,
		.set_config_valid = malidp550_set_config_valid,
		.modeset = malidp550_modeset,
		.rotmem_required = malidp550_rotmem_required,
730
		.se_set_scaling_coeffs = malidp550_se_set_scaling_coeffs,
731
		.se_calc_mclk = malidp550_se_calc_mclk,
732
		.features = 0,
733 734 735 736 737 738 739 740
	},
};

u8 malidp_hw_get_format_id(const struct malidp_hw_regmap *map,
			   u8 layer_id, u32 format)
{
	unsigned int i;

741 742 743 744
	for (i = 0; i < map->n_pixel_formats; i++) {
		if (((map->pixel_formats[i].layer & layer_id) == layer_id) &&
		    (map->pixel_formats[i].format == format))
			return map->pixel_formats[i].id;
745 746 747 748 749 750 751 752 753
	}

	return MALIDP_INVALID_FORMAT_ID;
}

static void malidp_hw_clear_irq(struct malidp_hw_device *hwdev, u8 block, u32 irq)
{
	u32 base = malidp_get_block_base(hwdev, block);

754
	if (hwdev->hw->map.features & MALIDP_REGMAP_HAS_CLEARIRQ)
755 756 757 758 759 760 761 762 763 764
		malidp_hw_write(hwdev, irq, base + MALIDP_REG_CLEARIRQ);
	else
		malidp_hw_write(hwdev, irq, base + MALIDP_REG_STATUS);
}

static irqreturn_t malidp_de_irq(int irq, void *arg)
{
	struct drm_device *drm = arg;
	struct malidp_drm *malidp = drm->dev_private;
	struct malidp_hw_device *hwdev;
765
	struct malidp_hw *hw;
766 767 768 769 770
	const struct malidp_irq_map *de;
	u32 status, mask, dc_status;
	irqreturn_t ret = IRQ_NONE;

	hwdev = malidp->dev;
771 772
	hw = hwdev->hw;
	de = &hw->map.de_irq_map;
773

774 775 776 777 778 779 780 781
	/*
	 * if we are suspended it is likely that we were invoked because
	 * we share an interrupt line with some other driver, don't try
	 * to read the hardware registers
	 */
	if (hwdev->pm_suspended)
		return IRQ_NONE;

782
	/* first handle the config valid IRQ */
783 784
	dc_status = malidp_hw_read(hwdev, hw->map.dc_base + MALIDP_REG_STATUS);
	if (dc_status & hw->map.dc_irq_map.vsync_irq) {
785
		malidp_hw_clear_irq(hwdev, MALIDP_DC_BLOCK, dc_status);
786 787 788 789 790 791 792 793
		/* do we have a page flip event? */
		if (malidp->event != NULL) {
			spin_lock(&drm->event_lock);
			drm_crtc_send_vblank_event(&malidp->crtc, malidp->event);
			malidp->event = NULL;
			spin_unlock(&drm->event_lock);
		}
		atomic_set(&malidp->config_valid, 1);
794 795 796 797 798 799 800 801 802
		ret = IRQ_WAKE_THREAD;
	}

	status = malidp_hw_read(hwdev, MALIDP_REG_STATUS);
	if (!(status & de->irq_mask))
		return ret;

	mask = malidp_hw_read(hwdev, MALIDP_REG_MASKIRQ);
	status &= mask;
803
	if ((status & de->vsync_irq) && malidp->crtc.enabled)
804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842
		drm_crtc_handle_vblank(&malidp->crtc);

	malidp_hw_clear_irq(hwdev, MALIDP_DE_BLOCK, status);

	return (ret == IRQ_NONE) ? IRQ_HANDLED : ret;
}

static irqreturn_t malidp_de_irq_thread_handler(int irq, void *arg)
{
	struct drm_device *drm = arg;
	struct malidp_drm *malidp = drm->dev_private;

	wake_up(&malidp->wq);

	return IRQ_HANDLED;
}

int malidp_de_irq_init(struct drm_device *drm, int irq)
{
	struct malidp_drm *malidp = drm->dev_private;
	struct malidp_hw_device *hwdev = malidp->dev;
	int ret;

	/* ensure interrupts are disabled */
	malidp_hw_disable_irq(hwdev, MALIDP_DE_BLOCK, 0xffffffff);
	malidp_hw_clear_irq(hwdev, MALIDP_DE_BLOCK, 0xffffffff);
	malidp_hw_disable_irq(hwdev, MALIDP_DC_BLOCK, 0xffffffff);
	malidp_hw_clear_irq(hwdev, MALIDP_DC_BLOCK, 0xffffffff);

	ret = devm_request_threaded_irq(drm->dev, irq, malidp_de_irq,
					malidp_de_irq_thread_handler,
					IRQF_SHARED, "malidp-de", drm);
	if (ret < 0) {
		DRM_ERROR("failed to install DE IRQ handler\n");
		return ret;
	}

	/* first enable the DC block IRQs */
	malidp_hw_enable_irq(hwdev, MALIDP_DC_BLOCK,
843
			     hwdev->hw->map.dc_irq_map.irq_mask);
844 845 846

	/* now enable the DE block IRQs */
	malidp_hw_enable_irq(hwdev, MALIDP_DE_BLOCK,
847
			     hwdev->hw->map.de_irq_map.irq_mask);
848 849 850 851 852 853 854 855 856 857

	return 0;
}

void malidp_de_irq_fini(struct drm_device *drm)
{
	struct malidp_drm *malidp = drm->dev_private;
	struct malidp_hw_device *hwdev = malidp->dev;

	malidp_hw_disable_irq(hwdev, MALIDP_DE_BLOCK,
858
			      hwdev->hw->map.de_irq_map.irq_mask);
859
	malidp_hw_disable_irq(hwdev, MALIDP_DC_BLOCK,
860
			      hwdev->hw->map.dc_irq_map.irq_mask);
861 862 863 864 865 866 867
}

static irqreturn_t malidp_se_irq(int irq, void *arg)
{
	struct drm_device *drm = arg;
	struct malidp_drm *malidp = drm->dev_private;
	struct malidp_hw_device *hwdev = malidp->dev;
868 869
	struct malidp_hw *hw = hwdev->hw;
	const struct malidp_irq_map *se = &hw->map.se_irq_map;
870 871
	u32 status, mask;

872 873 874 875 876 877 878 879
	/*
	 * if we are suspended it is likely that we were invoked because
	 * we share an interrupt line with some other driver, don't try
	 * to read the hardware registers
	 */
	if (hwdev->pm_suspended)
		return IRQ_NONE;

880 881
	status = malidp_hw_read(hwdev, hw->map.se_base + MALIDP_REG_STATUS);
	if (!(status & se->irq_mask))
882 883
		return IRQ_NONE;

884 885
	mask = malidp_hw_read(hwdev, hw->map.se_base + MALIDP_REG_MASKIRQ);
	status = malidp_hw_read(hwdev, hw->map.se_base + MALIDP_REG_STATUS);
886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917
	status &= mask;
	/* ToDo: status decoding and firing up of VSYNC and page flip events */

	malidp_hw_clear_irq(hwdev, MALIDP_SE_BLOCK, status);

	return IRQ_HANDLED;
}

static irqreturn_t malidp_se_irq_thread_handler(int irq, void *arg)
{
	return IRQ_HANDLED;
}

int malidp_se_irq_init(struct drm_device *drm, int irq)
{
	struct malidp_drm *malidp = drm->dev_private;
	struct malidp_hw_device *hwdev = malidp->dev;
	int ret;

	/* ensure interrupts are disabled */
	malidp_hw_disable_irq(hwdev, MALIDP_SE_BLOCK, 0xffffffff);
	malidp_hw_clear_irq(hwdev, MALIDP_SE_BLOCK, 0xffffffff);

	ret = devm_request_threaded_irq(drm->dev, irq, malidp_se_irq,
					malidp_se_irq_thread_handler,
					IRQF_SHARED, "malidp-se", drm);
	if (ret < 0) {
		DRM_ERROR("failed to install SE IRQ handler\n");
		return ret;
	}

	malidp_hw_enable_irq(hwdev, MALIDP_SE_BLOCK,
918
			     hwdev->hw->map.se_irq_map.irq_mask);
919 920 921 922 923 924 925 926 927 928

	return 0;
}

void malidp_se_irq_fini(struct drm_device *drm)
{
	struct malidp_drm *malidp = drm->dev_private;
	struct malidp_hw_device *hwdev = malidp->dev;

	malidp_hw_disable_irq(hwdev, MALIDP_SE_BLOCK,
929
			      hwdev->hw->map.se_irq_map.irq_mask);
930
}