1 /* 2 * (C) COPYRIGHT 2016 ARM Limited. All rights reserved. 3 * Author: Liviu Dudau <Liviu.Dudau@arm.com> 4 * 5 * This program is free software and is provided to you under the terms of the 6 * GNU General Public License version 2 as published by the Free Software 7 * Foundation, and any use by you of this program is subject to the terms 8 * of such GNU licence. 9 * 10 * ARM Mali DP500/DP550/DP650 hardware manipulation routines. This is where 11 * the difference between various versions of the hardware is being dealt with 12 * in an attempt to provide to the rest of the driver code a unified view 13 */ 14 15 #include <linux/clk.h> 16 #include <linux/types.h> 17 #include <linux/io.h> 18 #include <drm/drmP.h> 19 #include <video/videomode.h> 20 #include <video/display_timing.h> 21 22 #include "malidp_drv.h" 23 #include "malidp_hw.h" 24 25 static const struct malidp_format_id malidp500_de_formats[] = { 26 /* fourcc, layers supporting the format, internal id */ 27 { DRM_FORMAT_ARGB2101010, DE_VIDEO1 | DE_GRAPHICS1 | DE_GRAPHICS2, 0 }, 28 { DRM_FORMAT_ABGR2101010, DE_VIDEO1 | DE_GRAPHICS1 | DE_GRAPHICS2, 1 }, 29 { DRM_FORMAT_ARGB8888, DE_VIDEO1 | DE_GRAPHICS1 | DE_GRAPHICS2, 2 }, 30 { DRM_FORMAT_ABGR8888, DE_VIDEO1 | DE_GRAPHICS1 | DE_GRAPHICS2, 3 }, 31 { DRM_FORMAT_XRGB8888, DE_VIDEO1 | DE_GRAPHICS1 | DE_GRAPHICS2, 4 }, 32 { DRM_FORMAT_XBGR8888, DE_VIDEO1 | DE_GRAPHICS1 | DE_GRAPHICS2, 5 }, 33 { DRM_FORMAT_RGB888, DE_VIDEO1 | DE_GRAPHICS1 | DE_GRAPHICS2, 6 }, 34 { DRM_FORMAT_BGR888, DE_VIDEO1 | DE_GRAPHICS1 | DE_GRAPHICS2, 7 }, 35 { DRM_FORMAT_RGBA5551, DE_VIDEO1 | DE_GRAPHICS1 | DE_GRAPHICS2, 8 }, 36 { DRM_FORMAT_ABGR1555, DE_VIDEO1 | DE_GRAPHICS1 | DE_GRAPHICS2, 9 }, 37 { DRM_FORMAT_RGB565, DE_VIDEO1 | DE_GRAPHICS1 | DE_GRAPHICS2, 10 }, 38 { DRM_FORMAT_BGR565, DE_VIDEO1 | DE_GRAPHICS1 | DE_GRAPHICS2, 11 }, 39 { DRM_FORMAT_UYVY, DE_VIDEO1, 12 }, 40 { DRM_FORMAT_YUYV, DE_VIDEO1, 13 }, 41 { DRM_FORMAT_NV12, DE_VIDEO1, 14 }, 42 { DRM_FORMAT_YUV420, DE_VIDEO1, 15 }, 43 }; 44 45 #define MALIDP_ID(__group, __format) \ 46 ((((__group) & 0x7) << 3) | ((__format) & 0x7)) 47 48 #define MALIDP_COMMON_FORMATS \ 49 /* fourcc, layers supporting the format, internal id */ \ 50 { DRM_FORMAT_ARGB2101010, DE_VIDEO1 | DE_GRAPHICS1 | DE_VIDEO2, MALIDP_ID(0, 0) }, \ 51 { DRM_FORMAT_ABGR2101010, DE_VIDEO1 | DE_GRAPHICS1 | DE_VIDEO2, MALIDP_ID(0, 1) }, \ 52 { DRM_FORMAT_RGBA1010102, DE_VIDEO1 | DE_GRAPHICS1 | DE_VIDEO2, MALIDP_ID(0, 2) }, \ 53 { DRM_FORMAT_BGRA1010102, DE_VIDEO1 | DE_GRAPHICS1 | DE_VIDEO2, MALIDP_ID(0, 3) }, \ 54 { DRM_FORMAT_ARGB8888, DE_VIDEO1 | DE_GRAPHICS1 | DE_VIDEO2 | DE_SMART, MALIDP_ID(1, 0) }, \ 55 { DRM_FORMAT_ABGR8888, DE_VIDEO1 | DE_GRAPHICS1 | DE_VIDEO2 | DE_SMART, MALIDP_ID(1, 1) }, \ 56 { DRM_FORMAT_RGBA8888, DE_VIDEO1 | DE_GRAPHICS1 | DE_VIDEO2 | DE_SMART, MALIDP_ID(1, 2) }, \ 57 { DRM_FORMAT_BGRA8888, DE_VIDEO1 | DE_GRAPHICS1 | DE_VIDEO2 | DE_SMART, MALIDP_ID(1, 3) }, \ 58 { DRM_FORMAT_XRGB8888, DE_VIDEO1 | DE_GRAPHICS1 | DE_VIDEO2 | DE_SMART, MALIDP_ID(2, 0) }, \ 59 { DRM_FORMAT_XBGR8888, DE_VIDEO1 | DE_GRAPHICS1 | DE_VIDEO2 | DE_SMART, MALIDP_ID(2, 1) }, \ 60 { DRM_FORMAT_RGBX8888, DE_VIDEO1 | DE_GRAPHICS1 | DE_VIDEO2 | DE_SMART, MALIDP_ID(2, 2) }, \ 61 { DRM_FORMAT_BGRX8888, DE_VIDEO1 | DE_GRAPHICS1 | DE_VIDEO2 | DE_SMART, MALIDP_ID(2, 3) }, \ 62 { DRM_FORMAT_RGB888, DE_VIDEO1 | DE_GRAPHICS1 | DE_VIDEO2, MALIDP_ID(3, 0) }, \ 63 { DRM_FORMAT_BGR888, DE_VIDEO1 | DE_GRAPHICS1 | DE_VIDEO2, MALIDP_ID(3, 1) }, \ 64 { DRM_FORMAT_RGBA5551, DE_VIDEO1 | DE_GRAPHICS1 | DE_VIDEO2, MALIDP_ID(4, 0) }, \ 65 { DRM_FORMAT_ABGR1555, DE_VIDEO1 | DE_GRAPHICS1 | DE_VIDEO2, MALIDP_ID(4, 1) }, \ 66 { DRM_FORMAT_RGB565, DE_VIDEO1 | DE_GRAPHICS1 | DE_VIDEO2, MALIDP_ID(4, 2) }, \ 67 { DRM_FORMAT_BGR565, DE_VIDEO1 | DE_GRAPHICS1 | DE_VIDEO2, MALIDP_ID(4, 3) }, \ 68 { DRM_FORMAT_YUYV, DE_VIDEO1 | DE_VIDEO2, MALIDP_ID(5, 2) }, \ 69 { DRM_FORMAT_UYVY, DE_VIDEO1 | DE_VIDEO2, MALIDP_ID(5, 3) }, \ 70 { DRM_FORMAT_NV12, DE_VIDEO1 | DE_VIDEO2, MALIDP_ID(5, 6) }, \ 71 { DRM_FORMAT_YUV420, DE_VIDEO1 | DE_VIDEO2, MALIDP_ID(5, 7) } 72 73 static const struct malidp_format_id malidp550_de_formats[] = { 74 MALIDP_COMMON_FORMATS, 75 }; 76 77 static const struct malidp_layer malidp500_layers[] = { 78 { DE_VIDEO1, MALIDP500_DE_LV_BASE, MALIDP500_DE_LV_PTR_BASE, MALIDP_DE_LV_STRIDE0 }, 79 { DE_GRAPHICS1, MALIDP500_DE_LG1_BASE, MALIDP500_DE_LG1_PTR_BASE, MALIDP_DE_LG_STRIDE }, 80 { DE_GRAPHICS2, MALIDP500_DE_LG2_BASE, MALIDP500_DE_LG2_PTR_BASE, MALIDP_DE_LG_STRIDE }, 81 }; 82 83 static const struct malidp_layer malidp550_layers[] = { 84 { DE_VIDEO1, MALIDP550_DE_LV1_BASE, MALIDP550_DE_LV1_PTR_BASE, MALIDP_DE_LV_STRIDE0 }, 85 { DE_GRAPHICS1, MALIDP550_DE_LG_BASE, MALIDP550_DE_LG_PTR_BASE, MALIDP_DE_LG_STRIDE }, 86 { DE_VIDEO2, MALIDP550_DE_LV2_BASE, MALIDP550_DE_LV2_PTR_BASE, MALIDP_DE_LV_STRIDE0 }, 87 { DE_SMART, MALIDP550_DE_LS_BASE, MALIDP550_DE_LS_PTR_BASE, MALIDP550_DE_LS_R1_STRIDE }, 88 }; 89 90 #define SE_N_SCALING_COEFFS 96 91 static const u16 dp500_se_scaling_coeffs[][SE_N_SCALING_COEFFS] = { 92 [MALIDP_UPSCALING_COEFFS - 1] = { 93 0x0000, 0x0001, 0x0007, 0x0011, 0x001e, 0x002e, 0x003f, 0x0052, 94 0x0064, 0x0073, 0x007d, 0x0080, 0x007a, 0x006c, 0x0053, 0x002f, 95 0x0000, 0x3fc6, 0x3f83, 0x3f39, 0x3eea, 0x3e9b, 0x3e4f, 0x3e0a, 96 0x3dd4, 0x3db0, 0x3da2, 0x3db1, 0x3dde, 0x3e2f, 0x3ea5, 0x3f40, 97 0x0000, 0x00e5, 0x01ee, 0x0315, 0x0456, 0x05aa, 0x0709, 0x086c, 98 0x09c9, 0x0b15, 0x0c4a, 0x0d5d, 0x0e4a, 0x0f06, 0x0f91, 0x0fe5, 99 0x1000, 0x0fe5, 0x0f91, 0x0f06, 0x0e4a, 0x0d5d, 0x0c4a, 0x0b15, 100 0x09c9, 0x086c, 0x0709, 0x05aa, 0x0456, 0x0315, 0x01ee, 0x00e5, 101 0x0000, 0x3f40, 0x3ea5, 0x3e2f, 0x3dde, 0x3db1, 0x3da2, 0x3db0, 102 0x3dd4, 0x3e0a, 0x3e4f, 0x3e9b, 0x3eea, 0x3f39, 0x3f83, 0x3fc6, 103 0x0000, 0x002f, 0x0053, 0x006c, 0x007a, 0x0080, 0x007d, 0x0073, 104 0x0064, 0x0052, 0x003f, 0x002e, 0x001e, 0x0011, 0x0007, 0x0001 105 }, 106 [MALIDP_DOWNSCALING_1_5_COEFFS - 1] = { 107 0x0059, 0x004f, 0x0041, 0x002e, 0x0016, 0x3ffb, 0x3fd9, 0x3fb4, 108 0x3f8c, 0x3f62, 0x3f36, 0x3f09, 0x3edd, 0x3eb3, 0x3e8d, 0x3e6c, 109 0x3e52, 0x3e3f, 0x3e35, 0x3e37, 0x3e46, 0x3e61, 0x3e8c, 0x3ec5, 110 0x3f0f, 0x3f68, 0x3fd1, 0x004a, 0x00d3, 0x0169, 0x020b, 0x02b8, 111 0x036e, 0x042d, 0x04f2, 0x05b9, 0x0681, 0x0745, 0x0803, 0x08ba, 112 0x0965, 0x0a03, 0x0a91, 0x0b0d, 0x0b75, 0x0bc6, 0x0c00, 0x0c20, 113 0x0c28, 0x0c20, 0x0c00, 0x0bc6, 0x0b75, 0x0b0d, 0x0a91, 0x0a03, 114 0x0965, 0x08ba, 0x0803, 0x0745, 0x0681, 0x05b9, 0x04f2, 0x042d, 115 0x036e, 0x02b8, 0x020b, 0x0169, 0x00d3, 0x004a, 0x3fd1, 0x3f68, 116 0x3f0f, 0x3ec5, 0x3e8c, 0x3e61, 0x3e46, 0x3e37, 0x3e35, 0x3e3f, 117 0x3e52, 0x3e6c, 0x3e8d, 0x3eb3, 0x3edd, 0x3f09, 0x3f36, 0x3f62, 118 0x3f8c, 0x3fb4, 0x3fd9, 0x3ffb, 0x0016, 0x002e, 0x0041, 0x004f 119 }, 120 [MALIDP_DOWNSCALING_2_COEFFS - 1] = { 121 0x3f19, 0x3f03, 0x3ef0, 0x3edf, 0x3ed0, 0x3ec5, 0x3ebd, 0x3eb9, 122 0x3eb9, 0x3ebf, 0x3eca, 0x3ed9, 0x3eef, 0x3f0a, 0x3f2c, 0x3f52, 123 0x3f7f, 0x3fb0, 0x3fe8, 0x0026, 0x006a, 0x00b4, 0x0103, 0x0158, 124 0x01b1, 0x020d, 0x026c, 0x02cd, 0x032f, 0x0392, 0x03f4, 0x0455, 125 0x04b4, 0x051e, 0x0585, 0x05eb, 0x064c, 0x06a8, 0x06fe, 0x074e, 126 0x0796, 0x07d5, 0x080c, 0x0839, 0x085c, 0x0875, 0x0882, 0x0887, 127 0x0881, 0x0887, 0x0882, 0x0875, 0x085c, 0x0839, 0x080c, 0x07d5, 128 0x0796, 0x074e, 0x06fe, 0x06a8, 0x064c, 0x05eb, 0x0585, 0x051e, 129 0x04b4, 0x0455, 0x03f4, 0x0392, 0x032f, 0x02cd, 0x026c, 0x020d, 130 0x01b1, 0x0158, 0x0103, 0x00b4, 0x006a, 0x0026, 0x3fe8, 0x3fb0, 131 0x3f7f, 0x3f52, 0x3f2c, 0x3f0a, 0x3eef, 0x3ed9, 0x3eca, 0x3ebf, 132 0x3eb9, 0x3eb9, 0x3ebd, 0x3ec5, 0x3ed0, 0x3edf, 0x3ef0, 0x3f03 133 }, 134 [MALIDP_DOWNSCALING_2_75_COEFFS - 1] = { 135 0x3f51, 0x3f60, 0x3f71, 0x3f84, 0x3f98, 0x3faf, 0x3fc8, 0x3fe3, 136 0x0000, 0x001f, 0x0040, 0x0064, 0x008a, 0x00b1, 0x00da, 0x0106, 137 0x0133, 0x0160, 0x018e, 0x01bd, 0x01ec, 0x021d, 0x024e, 0x0280, 138 0x02b2, 0x02e4, 0x0317, 0x0349, 0x037c, 0x03ad, 0x03df, 0x0410, 139 0x0440, 0x0468, 0x048f, 0x04b3, 0x04d6, 0x04f8, 0x0516, 0x0533, 140 0x054e, 0x0566, 0x057c, 0x0590, 0x05a0, 0x05ae, 0x05ba, 0x05c3, 141 0x05c9, 0x05c3, 0x05ba, 0x05ae, 0x05a0, 0x0590, 0x057c, 0x0566, 142 0x054e, 0x0533, 0x0516, 0x04f8, 0x04d6, 0x04b3, 0x048f, 0x0468, 143 0x0440, 0x0410, 0x03df, 0x03ad, 0x037c, 0x0349, 0x0317, 0x02e4, 144 0x02b2, 0x0280, 0x024e, 0x021d, 0x01ec, 0x01bd, 0x018e, 0x0160, 145 0x0133, 0x0106, 0x00da, 0x00b1, 0x008a, 0x0064, 0x0040, 0x001f, 146 0x0000, 0x3fe3, 0x3fc8, 0x3faf, 0x3f98, 0x3f84, 0x3f71, 0x3f60 147 }, 148 [MALIDP_DOWNSCALING_4_COEFFS - 1] = { 149 0x0094, 0x00a9, 0x00be, 0x00d4, 0x00ea, 0x0101, 0x0118, 0x012f, 150 0x0148, 0x0160, 0x017a, 0x0193, 0x01ae, 0x01c8, 0x01e4, 0x01ff, 151 0x021c, 0x0233, 0x024a, 0x0261, 0x0278, 0x028f, 0x02a6, 0x02bd, 152 0x02d4, 0x02eb, 0x0302, 0x0319, 0x032f, 0x0346, 0x035d, 0x0374, 153 0x038a, 0x0397, 0x03a3, 0x03af, 0x03bb, 0x03c6, 0x03d1, 0x03db, 154 0x03e4, 0x03ed, 0x03f6, 0x03fe, 0x0406, 0x040d, 0x0414, 0x041a, 155 0x0420, 0x041a, 0x0414, 0x040d, 0x0406, 0x03fe, 0x03f6, 0x03ed, 156 0x03e4, 0x03db, 0x03d1, 0x03c6, 0x03bb, 0x03af, 0x03a3, 0x0397, 157 0x038a, 0x0374, 0x035d, 0x0346, 0x032f, 0x0319, 0x0302, 0x02eb, 158 0x02d4, 0x02bd, 0x02a6, 0x028f, 0x0278, 0x0261, 0x024a, 0x0233, 159 0x021c, 0x01ff, 0x01e4, 0x01c8, 0x01ae, 0x0193, 0x017a, 0x0160, 160 0x0148, 0x012f, 0x0118, 0x0101, 0x00ea, 0x00d4, 0x00be, 0x00a9 161 }, 162 }; 163 164 #define MALIDP_DE_DEFAULT_PREFETCH_START 5 165 166 static int malidp500_query_hw(struct malidp_hw_device *hwdev) 167 { 168 u32 conf = malidp_hw_read(hwdev, MALIDP500_CONFIG_ID); 169 /* bit 4 of the CONFIG_ID register holds the line size multiplier */ 170 u8 ln_size_mult = conf & 0x10 ? 2 : 1; 171 172 hwdev->min_line_size = 2; 173 hwdev->max_line_size = SZ_2K * ln_size_mult; 174 hwdev->rotation_memory[0] = SZ_1K * 64 * ln_size_mult; 175 hwdev->rotation_memory[1] = 0; /* no second rotation memory bank */ 176 177 return 0; 178 } 179 180 static void malidp500_enter_config_mode(struct malidp_hw_device *hwdev) 181 { 182 u32 status, count = 100; 183 184 malidp_hw_setbits(hwdev, MALIDP500_DC_CONFIG_REQ, MALIDP500_DC_CONTROL); 185 while (count) { 186 status = malidp_hw_read(hwdev, hwdev->hw->map.dc_base + MALIDP_REG_STATUS); 187 if ((status & MALIDP500_DC_CONFIG_REQ) == MALIDP500_DC_CONFIG_REQ) 188 break; 189 /* 190 * entering config mode can take as long as the rendering 191 * of a full frame, hence the long sleep here 192 */ 193 usleep_range(1000, 10000); 194 count--; 195 } 196 WARN(count == 0, "timeout while entering config mode"); 197 } 198 199 static void malidp500_leave_config_mode(struct malidp_hw_device *hwdev) 200 { 201 u32 status, count = 100; 202 203 malidp_hw_clearbits(hwdev, MALIDP_CFG_VALID, MALIDP500_CONFIG_VALID); 204 malidp_hw_clearbits(hwdev, MALIDP500_DC_CONFIG_REQ, MALIDP500_DC_CONTROL); 205 while (count) { 206 status = malidp_hw_read(hwdev, hwdev->hw->map.dc_base + MALIDP_REG_STATUS); 207 if ((status & MALIDP500_DC_CONFIG_REQ) == 0) 208 break; 209 usleep_range(100, 1000); 210 count--; 211 } 212 WARN(count == 0, "timeout while leaving config mode"); 213 } 214 215 static bool malidp500_in_config_mode(struct malidp_hw_device *hwdev) 216 { 217 u32 status; 218 219 status = malidp_hw_read(hwdev, hwdev->hw->map.dc_base + MALIDP_REG_STATUS); 220 if ((status & MALIDP500_DC_CONFIG_REQ) == MALIDP500_DC_CONFIG_REQ) 221 return true; 222 223 return false; 224 } 225 226 static void malidp500_set_config_valid(struct malidp_hw_device *hwdev) 227 { 228 malidp_hw_setbits(hwdev, MALIDP_CFG_VALID, MALIDP500_CONFIG_VALID); 229 } 230 231 static void malidp500_modeset(struct malidp_hw_device *hwdev, struct videomode *mode) 232 { 233 u32 val = 0; 234 235 malidp_hw_clearbits(hwdev, MALIDP500_DC_CLEAR_MASK, MALIDP500_DC_CONTROL); 236 if (mode->flags & DISPLAY_FLAGS_HSYNC_HIGH) 237 val |= MALIDP500_HSYNCPOL; 238 if (mode->flags & DISPLAY_FLAGS_VSYNC_HIGH) 239 val |= MALIDP500_VSYNCPOL; 240 val |= MALIDP_DE_DEFAULT_PREFETCH_START; 241 malidp_hw_setbits(hwdev, val, MALIDP500_DC_CONTROL); 242 243 /* 244 * Mali-DP500 encodes the background color like this: 245 * - red @ MALIDP500_BGND_COLOR[12:0] 246 * - green @ MALIDP500_BGND_COLOR[27:16] 247 * - blue @ (MALIDP500_BGND_COLOR + 4)[12:0] 248 */ 249 val = ((MALIDP_BGND_COLOR_G & 0xfff) << 16) | 250 (MALIDP_BGND_COLOR_R & 0xfff); 251 malidp_hw_write(hwdev, val, MALIDP500_BGND_COLOR); 252 malidp_hw_write(hwdev, MALIDP_BGND_COLOR_B, MALIDP500_BGND_COLOR + 4); 253 254 val = MALIDP_DE_H_FRONTPORCH(mode->hfront_porch) | 255 MALIDP_DE_H_BACKPORCH(mode->hback_porch); 256 malidp_hw_write(hwdev, val, MALIDP500_TIMINGS_BASE + MALIDP_DE_H_TIMINGS); 257 258 val = MALIDP500_DE_V_FRONTPORCH(mode->vfront_porch) | 259 MALIDP_DE_V_BACKPORCH(mode->vback_porch); 260 malidp_hw_write(hwdev, val, MALIDP500_TIMINGS_BASE + MALIDP_DE_V_TIMINGS); 261 262 val = MALIDP_DE_H_SYNCWIDTH(mode->hsync_len) | 263 MALIDP_DE_V_SYNCWIDTH(mode->vsync_len); 264 malidp_hw_write(hwdev, val, MALIDP500_TIMINGS_BASE + MALIDP_DE_SYNC_WIDTH); 265 266 val = MALIDP_DE_H_ACTIVE(mode->hactive) | MALIDP_DE_V_ACTIVE(mode->vactive); 267 malidp_hw_write(hwdev, val, MALIDP500_TIMINGS_BASE + MALIDP_DE_HV_ACTIVE); 268 269 if (mode->flags & DISPLAY_FLAGS_INTERLACED) 270 malidp_hw_setbits(hwdev, MALIDP_DISP_FUNC_ILACED, MALIDP_DE_DISPLAY_FUNC); 271 else 272 malidp_hw_clearbits(hwdev, MALIDP_DISP_FUNC_ILACED, MALIDP_DE_DISPLAY_FUNC); 273 } 274 275 static int malidp500_rotmem_required(struct malidp_hw_device *hwdev, u16 w, u16 h, u32 fmt) 276 { 277 /* RGB888 or BGR888 can't be rotated */ 278 if ((fmt == DRM_FORMAT_RGB888) || (fmt == DRM_FORMAT_BGR888)) 279 return -EINVAL; 280 281 /* 282 * Each layer needs enough rotation memory to fit 8 lines 283 * worth of pixel data. Required size is then: 284 * size = rotated_width * (bpp / 8) * 8; 285 */ 286 return w * drm_format_plane_cpp(fmt, 0) * 8; 287 } 288 289 static void malidp500_se_write_pp_coefftab(struct malidp_hw_device *hwdev, 290 u32 direction, 291 u16 addr, 292 u8 coeffs_id) 293 { 294 int i; 295 u16 scaling_control = MALIDP500_SE_CONTROL + MALIDP_SE_SCALING_CONTROL; 296 297 malidp_hw_write(hwdev, 298 direction | (addr & MALIDP_SE_COEFFTAB_ADDR_MASK), 299 scaling_control + MALIDP_SE_COEFFTAB_ADDR); 300 for (i = 0; i < ARRAY_SIZE(dp500_se_scaling_coeffs); ++i) 301 malidp_hw_write(hwdev, MALIDP_SE_SET_COEFFTAB_DATA( 302 dp500_se_scaling_coeffs[coeffs_id][i]), 303 scaling_control + MALIDP_SE_COEFFTAB_DATA); 304 } 305 306 static int malidp500_se_set_scaling_coeffs(struct malidp_hw_device *hwdev, 307 struct malidp_se_config *se_config, 308 struct malidp_se_config *old_config) 309 { 310 /* Get array indices into dp500_se_scaling_coeffs. */ 311 u8 h = (u8)se_config->hcoeff - 1; 312 u8 v = (u8)se_config->vcoeff - 1; 313 314 if (WARN_ON(h >= ARRAY_SIZE(dp500_se_scaling_coeffs) || 315 v >= ARRAY_SIZE(dp500_se_scaling_coeffs))) 316 return -EINVAL; 317 318 if ((h == v) && (se_config->hcoeff != old_config->hcoeff || 319 se_config->vcoeff != old_config->vcoeff)) { 320 malidp500_se_write_pp_coefftab(hwdev, 321 (MALIDP_SE_V_COEFFTAB | 322 MALIDP_SE_H_COEFFTAB), 323 0, v); 324 } else { 325 if (se_config->vcoeff != old_config->vcoeff) 326 malidp500_se_write_pp_coefftab(hwdev, 327 MALIDP_SE_V_COEFFTAB, 328 0, v); 329 if (se_config->hcoeff != old_config->hcoeff) 330 malidp500_se_write_pp_coefftab(hwdev, 331 MALIDP_SE_H_COEFFTAB, 332 0, h); 333 } 334 335 return 0; 336 } 337 338 static long malidp500_se_calc_mclk(struct malidp_hw_device *hwdev, 339 struct malidp_se_config *se_config, 340 struct videomode *vm) 341 { 342 unsigned long mclk; 343 unsigned long pxlclk = vm->pixelclock; /* Hz */ 344 unsigned long htotal = vm->hactive + vm->hfront_porch + 345 vm->hback_porch + vm->hsync_len; 346 unsigned long input_size = se_config->input_w * se_config->input_h; 347 unsigned long a = 10; 348 long ret; 349 350 /* 351 * mclk = max(a, 1.5) * pxlclk 352 * 353 * To avoid float calculaiton, using 15 instead of 1.5 and div by 354 * 10 to get mclk. 355 */ 356 if (se_config->scale_enable) { 357 a = 15 * input_size / (htotal * se_config->output_h); 358 if (a < 15) 359 a = 15; 360 } 361 mclk = a * pxlclk / 10; 362 ret = clk_get_rate(hwdev->mclk); 363 if (ret < mclk) { 364 DRM_DEBUG_DRIVER("mclk requirement of %lu kHz can't be met.\n", 365 mclk / 1000); 366 return -EINVAL; 367 } 368 return ret; 369 } 370 371 static int malidp550_query_hw(struct malidp_hw_device *hwdev) 372 { 373 u32 conf = malidp_hw_read(hwdev, MALIDP550_CONFIG_ID); 374 u8 ln_size = (conf >> 4) & 0x3, rsize; 375 376 hwdev->min_line_size = 2; 377 378 switch (ln_size) { 379 case 0: 380 hwdev->max_line_size = SZ_2K; 381 /* two banks of 64KB for rotation memory */ 382 rsize = 64; 383 break; 384 case 1: 385 hwdev->max_line_size = SZ_4K; 386 /* two banks of 128KB for rotation memory */ 387 rsize = 128; 388 break; 389 case 2: 390 hwdev->max_line_size = 1280; 391 /* two banks of 40KB for rotation memory */ 392 rsize = 40; 393 break; 394 case 3: 395 /* reserved value */ 396 hwdev->max_line_size = 0; 397 return -EINVAL; 398 } 399 400 hwdev->rotation_memory[0] = hwdev->rotation_memory[1] = rsize * SZ_1K; 401 return 0; 402 } 403 404 static void malidp550_enter_config_mode(struct malidp_hw_device *hwdev) 405 { 406 u32 status, count = 100; 407 408 malidp_hw_setbits(hwdev, MALIDP550_DC_CONFIG_REQ, MALIDP550_DC_CONTROL); 409 while (count) { 410 status = malidp_hw_read(hwdev, hwdev->hw->map.dc_base + MALIDP_REG_STATUS); 411 if ((status & MALIDP550_DC_CONFIG_REQ) == MALIDP550_DC_CONFIG_REQ) 412 break; 413 /* 414 * entering config mode can take as long as the rendering 415 * of a full frame, hence the long sleep here 416 */ 417 usleep_range(1000, 10000); 418 count--; 419 } 420 WARN(count == 0, "timeout while entering config mode"); 421 } 422 423 static void malidp550_leave_config_mode(struct malidp_hw_device *hwdev) 424 { 425 u32 status, count = 100; 426 427 malidp_hw_clearbits(hwdev, MALIDP_CFG_VALID, MALIDP550_CONFIG_VALID); 428 malidp_hw_clearbits(hwdev, MALIDP550_DC_CONFIG_REQ, MALIDP550_DC_CONTROL); 429 while (count) { 430 status = malidp_hw_read(hwdev, hwdev->hw->map.dc_base + MALIDP_REG_STATUS); 431 if ((status & MALIDP550_DC_CONFIG_REQ) == 0) 432 break; 433 usleep_range(100, 1000); 434 count--; 435 } 436 WARN(count == 0, "timeout while leaving config mode"); 437 } 438 439 static bool malidp550_in_config_mode(struct malidp_hw_device *hwdev) 440 { 441 u32 status; 442 443 status = malidp_hw_read(hwdev, hwdev->hw->map.dc_base + MALIDP_REG_STATUS); 444 if ((status & MALIDP550_DC_CONFIG_REQ) == MALIDP550_DC_CONFIG_REQ) 445 return true; 446 447 return false; 448 } 449 450 static void malidp550_set_config_valid(struct malidp_hw_device *hwdev) 451 { 452 malidp_hw_setbits(hwdev, MALIDP_CFG_VALID, MALIDP550_CONFIG_VALID); 453 } 454 455 static void malidp550_modeset(struct malidp_hw_device *hwdev, struct videomode *mode) 456 { 457 u32 val = MALIDP_DE_DEFAULT_PREFETCH_START; 458 459 malidp_hw_write(hwdev, val, MALIDP550_DE_CONTROL); 460 /* 461 * Mali-DP550 and Mali-DP650 encode the background color like this: 462 * - red @ MALIDP550_DE_BGND_COLOR[23:16] 463 * - green @ MALIDP550_DE_BGND_COLOR[15:8] 464 * - blue @ MALIDP550_DE_BGND_COLOR[7:0] 465 * 466 * We need to truncate the least significant 4 bits from the default 467 * MALIDP_BGND_COLOR_x values 468 */ 469 val = (((MALIDP_BGND_COLOR_R >> 4) & 0xff) << 16) | 470 (((MALIDP_BGND_COLOR_G >> 4) & 0xff) << 8) | 471 ((MALIDP_BGND_COLOR_B >> 4) & 0xff); 472 malidp_hw_write(hwdev, val, MALIDP550_DE_BGND_COLOR); 473 474 val = MALIDP_DE_H_FRONTPORCH(mode->hfront_porch) | 475 MALIDP_DE_H_BACKPORCH(mode->hback_porch); 476 malidp_hw_write(hwdev, val, MALIDP550_TIMINGS_BASE + MALIDP_DE_H_TIMINGS); 477 478 val = MALIDP550_DE_V_FRONTPORCH(mode->vfront_porch) | 479 MALIDP_DE_V_BACKPORCH(mode->vback_porch); 480 malidp_hw_write(hwdev, val, MALIDP550_TIMINGS_BASE + MALIDP_DE_V_TIMINGS); 481 482 val = MALIDP_DE_H_SYNCWIDTH(mode->hsync_len) | 483 MALIDP_DE_V_SYNCWIDTH(mode->vsync_len); 484 if (mode->flags & DISPLAY_FLAGS_HSYNC_HIGH) 485 val |= MALIDP550_HSYNCPOL; 486 if (mode->flags & DISPLAY_FLAGS_VSYNC_HIGH) 487 val |= MALIDP550_VSYNCPOL; 488 malidp_hw_write(hwdev, val, MALIDP550_TIMINGS_BASE + MALIDP_DE_SYNC_WIDTH); 489 490 val = MALIDP_DE_H_ACTIVE(mode->hactive) | MALIDP_DE_V_ACTIVE(mode->vactive); 491 malidp_hw_write(hwdev, val, MALIDP550_TIMINGS_BASE + MALIDP_DE_HV_ACTIVE); 492 493 if (mode->flags & DISPLAY_FLAGS_INTERLACED) 494 malidp_hw_setbits(hwdev, MALIDP_DISP_FUNC_ILACED, MALIDP_DE_DISPLAY_FUNC); 495 else 496 malidp_hw_clearbits(hwdev, MALIDP_DISP_FUNC_ILACED, MALIDP_DE_DISPLAY_FUNC); 497 } 498 499 static int malidp550_rotmem_required(struct malidp_hw_device *hwdev, u16 w, u16 h, u32 fmt) 500 { 501 u32 bytes_per_col; 502 503 /* raw RGB888 or BGR888 can't be rotated */ 504 if ((fmt == DRM_FORMAT_RGB888) || (fmt == DRM_FORMAT_BGR888)) 505 return -EINVAL; 506 507 switch (fmt) { 508 /* 8 lines at 4 bytes per pixel */ 509 case DRM_FORMAT_ARGB2101010: 510 case DRM_FORMAT_ABGR2101010: 511 case DRM_FORMAT_RGBA1010102: 512 case DRM_FORMAT_BGRA1010102: 513 case DRM_FORMAT_ARGB8888: 514 case DRM_FORMAT_ABGR8888: 515 case DRM_FORMAT_RGBA8888: 516 case DRM_FORMAT_BGRA8888: 517 case DRM_FORMAT_XRGB8888: 518 case DRM_FORMAT_XBGR8888: 519 case DRM_FORMAT_RGBX8888: 520 case DRM_FORMAT_BGRX8888: 521 case DRM_FORMAT_RGB888: 522 case DRM_FORMAT_BGR888: 523 /* 16 lines at 2 bytes per pixel */ 524 case DRM_FORMAT_RGBA5551: 525 case DRM_FORMAT_ABGR1555: 526 case DRM_FORMAT_RGB565: 527 case DRM_FORMAT_BGR565: 528 case DRM_FORMAT_UYVY: 529 case DRM_FORMAT_YUYV: 530 bytes_per_col = 32; 531 break; 532 /* 16 lines at 1.5 bytes per pixel */ 533 case DRM_FORMAT_NV12: 534 case DRM_FORMAT_YUV420: 535 bytes_per_col = 24; 536 break; 537 default: 538 return -EINVAL; 539 } 540 541 return w * bytes_per_col; 542 } 543 544 static int malidp550_se_set_scaling_coeffs(struct malidp_hw_device *hwdev, 545 struct malidp_se_config *se_config, 546 struct malidp_se_config *old_config) 547 { 548 u32 mask = MALIDP550_SE_CTL_VCSEL(MALIDP550_SE_CTL_SEL_MASK) | 549 MALIDP550_SE_CTL_HCSEL(MALIDP550_SE_CTL_SEL_MASK); 550 u32 new_value = MALIDP550_SE_CTL_VCSEL(se_config->vcoeff) | 551 MALIDP550_SE_CTL_HCSEL(se_config->hcoeff); 552 553 malidp_hw_clearbits(hwdev, mask, MALIDP550_SE_CONTROL); 554 malidp_hw_setbits(hwdev, new_value, MALIDP550_SE_CONTROL); 555 return 0; 556 } 557 558 static long malidp550_se_calc_mclk(struct malidp_hw_device *hwdev, 559 struct malidp_se_config *se_config, 560 struct videomode *vm) 561 { 562 unsigned long mclk; 563 unsigned long pxlclk = vm->pixelclock; 564 unsigned long htotal = vm->hactive + vm->hfront_porch + 565 vm->hback_porch + vm->hsync_len; 566 unsigned long numerator = 1, denominator = 1; 567 long ret; 568 569 if (se_config->scale_enable) { 570 numerator = max(se_config->input_w, se_config->output_w) * 571 se_config->input_h; 572 numerator += se_config->output_w * 573 (se_config->output_h - 574 min(se_config->input_h, se_config->output_h)); 575 denominator = (htotal - 2) * se_config->output_h; 576 } 577 578 /* mclk can't be slower than pxlclk. */ 579 if (numerator < denominator) 580 numerator = denominator = 1; 581 mclk = (pxlclk * numerator) / denominator; 582 ret = clk_get_rate(hwdev->mclk); 583 if (ret < mclk) { 584 DRM_DEBUG_DRIVER("mclk requirement of %lu kHz can't be met.\n", 585 mclk / 1000); 586 return -EINVAL; 587 } 588 return ret; 589 } 590 591 static int malidp650_query_hw(struct malidp_hw_device *hwdev) 592 { 593 u32 conf = malidp_hw_read(hwdev, MALIDP550_CONFIG_ID); 594 u8 ln_size = (conf >> 4) & 0x3, rsize; 595 596 hwdev->min_line_size = 4; 597 598 switch (ln_size) { 599 case 0: 600 case 2: 601 /* reserved values */ 602 hwdev->max_line_size = 0; 603 return -EINVAL; 604 case 1: 605 hwdev->max_line_size = SZ_4K; 606 /* two banks of 128KB for rotation memory */ 607 rsize = 128; 608 break; 609 case 3: 610 hwdev->max_line_size = 2560; 611 /* two banks of 80KB for rotation memory */ 612 rsize = 80; 613 } 614 615 hwdev->rotation_memory[0] = hwdev->rotation_memory[1] = rsize * SZ_1K; 616 return 0; 617 } 618 619 const struct malidp_hw malidp_device[MALIDP_MAX_DEVICES] = { 620 [MALIDP_500] = { 621 .map = { 622 .coeffs_base = MALIDP500_COEFFS_BASE, 623 .se_base = MALIDP500_SE_BASE, 624 .dc_base = MALIDP500_DC_BASE, 625 .out_depth_base = MALIDP500_OUTPUT_DEPTH, 626 .features = 0, /* no CLEARIRQ register */ 627 .n_layers = ARRAY_SIZE(malidp500_layers), 628 .layers = malidp500_layers, 629 .de_irq_map = { 630 .irq_mask = MALIDP_DE_IRQ_UNDERRUN | 631 MALIDP500_DE_IRQ_AXI_ERR | 632 MALIDP500_DE_IRQ_VSYNC | 633 MALIDP500_DE_IRQ_GLOBAL, 634 .vsync_irq = MALIDP500_DE_IRQ_VSYNC, 635 }, 636 .se_irq_map = { 637 .irq_mask = MALIDP500_SE_IRQ_CONF_MODE, 638 .vsync_irq = 0, 639 }, 640 .dc_irq_map = { 641 .irq_mask = MALIDP500_DE_IRQ_CONF_VALID, 642 .vsync_irq = MALIDP500_DE_IRQ_CONF_VALID, 643 }, 644 .pixel_formats = malidp500_de_formats, 645 .n_pixel_formats = ARRAY_SIZE(malidp500_de_formats), 646 .bus_align_bytes = 8, 647 }, 648 .query_hw = malidp500_query_hw, 649 .enter_config_mode = malidp500_enter_config_mode, 650 .leave_config_mode = malidp500_leave_config_mode, 651 .in_config_mode = malidp500_in_config_mode, 652 .set_config_valid = malidp500_set_config_valid, 653 .modeset = malidp500_modeset, 654 .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 [MALIDP_550] = { 660 .map = { 661 .coeffs_base = MALIDP550_COEFFS_BASE, 662 .se_base = MALIDP550_SE_BASE, 663 .dc_base = MALIDP550_DC_BASE, 664 .out_depth_base = MALIDP550_DE_OUTPUT_DEPTH, 665 .features = MALIDP_REGMAP_HAS_CLEARIRQ, 666 .n_layers = ARRAY_SIZE(malidp550_layers), 667 .layers = malidp550_layers, 668 .de_irq_map = { 669 .irq_mask = MALIDP_DE_IRQ_UNDERRUN | 670 MALIDP550_DE_IRQ_VSYNC, 671 .vsync_irq = MALIDP550_DE_IRQ_VSYNC, 672 }, 673 .se_irq_map = { 674 .irq_mask = MALIDP550_SE_IRQ_EOW | 675 MALIDP550_SE_IRQ_AXI_ERR, 676 }, 677 .dc_irq_map = { 678 .irq_mask = MALIDP550_DC_IRQ_CONF_VALID, 679 .vsync_irq = MALIDP550_DC_IRQ_CONF_VALID, 680 }, 681 .pixel_formats = malidp550_de_formats, 682 .n_pixel_formats = ARRAY_SIZE(malidp550_de_formats), 683 .bus_align_bytes = 8, 684 }, 685 .query_hw = malidp550_query_hw, 686 .enter_config_mode = malidp550_enter_config_mode, 687 .leave_config_mode = malidp550_leave_config_mode, 688 .in_config_mode = malidp550_in_config_mode, 689 .set_config_valid = malidp550_set_config_valid, 690 .modeset = malidp550_modeset, 691 .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 [MALIDP_650] = { 697 .map = { 698 .coeffs_base = MALIDP550_COEFFS_BASE, 699 .se_base = MALIDP550_SE_BASE, 700 .dc_base = MALIDP550_DC_BASE, 701 .out_depth_base = MALIDP550_DE_OUTPUT_DEPTH, 702 .features = MALIDP_REGMAP_HAS_CLEARIRQ, 703 .n_layers = ARRAY_SIZE(malidp550_layers), 704 .layers = malidp550_layers, 705 .de_irq_map = { 706 .irq_mask = MALIDP_DE_IRQ_UNDERRUN | 707 MALIDP650_DE_IRQ_DRIFT | 708 MALIDP550_DE_IRQ_VSYNC, 709 .vsync_irq = MALIDP550_DE_IRQ_VSYNC, 710 }, 711 .se_irq_map = { 712 .irq_mask = MALIDP550_SE_IRQ_EOW | 713 MALIDP550_SE_IRQ_AXI_ERR, 714 }, 715 .dc_irq_map = { 716 .irq_mask = MALIDP550_DC_IRQ_CONF_VALID, 717 .vsync_irq = MALIDP550_DC_IRQ_CONF_VALID, 718 }, 719 .pixel_formats = malidp550_de_formats, 720 .n_pixel_formats = ARRAY_SIZE(malidp550_de_formats), 721 .bus_align_bytes = 16, 722 }, 723 .query_hw = malidp650_query_hw, 724 .enter_config_mode = malidp550_enter_config_mode, 725 .leave_config_mode = malidp550_leave_config_mode, 726 .in_config_mode = malidp550_in_config_mode, 727 .set_config_valid = malidp550_set_config_valid, 728 .modeset = malidp550_modeset, 729 .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 u8 malidp_hw_get_format_id(const struct malidp_hw_regmap *map, 737 u8 layer_id, u32 format) 738 { 739 unsigned int i; 740 741 for (i = 0; i < map->n_pixel_formats; i++) { 742 if (((map->pixel_formats[i].layer & layer_id) == layer_id) && 743 (map->pixel_formats[i].format == format)) 744 return map->pixel_formats[i].id; 745 } 746 747 return MALIDP_INVALID_FORMAT_ID; 748 } 749 750 static void malidp_hw_clear_irq(struct malidp_hw_device *hwdev, u8 block, u32 irq) 751 { 752 u32 base = malidp_get_block_base(hwdev, block); 753 754 if (hwdev->hw->map.features & MALIDP_REGMAP_HAS_CLEARIRQ) 755 malidp_hw_write(hwdev, irq, base + MALIDP_REG_CLEARIRQ); 756 else 757 malidp_hw_write(hwdev, irq, base + MALIDP_REG_STATUS); 758 } 759 760 static irqreturn_t malidp_de_irq(int irq, void *arg) 761 { 762 struct drm_device *drm = arg; 763 struct malidp_drm *malidp = drm->dev_private; 764 struct malidp_hw_device *hwdev; 765 struct malidp_hw *hw; 766 const struct malidp_irq_map *de; 767 u32 status, mask, dc_status; 768 irqreturn_t ret = IRQ_NONE; 769 770 hwdev = malidp->dev; 771 hw = hwdev->hw; 772 de = &hw->map.de_irq_map; 773 774 /* 775 * if we are suspended it is likely that we were invoked because 776 * we share an interrupt line with some other driver, don't try 777 * to read the hardware registers 778 */ 779 if (hwdev->pm_suspended) 780 return IRQ_NONE; 781 782 /* first handle the config valid IRQ */ 783 dc_status = malidp_hw_read(hwdev, hw->map.dc_base + MALIDP_REG_STATUS); 784 if (dc_status & hw->map.dc_irq_map.vsync_irq) { 785 /* we have a page flip event */ 786 atomic_set(&malidp->config_valid, 1); 787 malidp_hw_clear_irq(hwdev, MALIDP_DC_BLOCK, dc_status); 788 ret = IRQ_WAKE_THREAD; 789 } 790 791 status = malidp_hw_read(hwdev, MALIDP_REG_STATUS); 792 if (!(status & de->irq_mask)) 793 return ret; 794 795 mask = malidp_hw_read(hwdev, MALIDP_REG_MASKIRQ); 796 status &= mask; 797 if (status & de->vsync_irq) 798 drm_crtc_handle_vblank(&malidp->crtc); 799 800 malidp_hw_clear_irq(hwdev, MALIDP_DE_BLOCK, status); 801 802 return (ret == IRQ_NONE) ? IRQ_HANDLED : ret; 803 } 804 805 static irqreturn_t malidp_de_irq_thread_handler(int irq, void *arg) 806 { 807 struct drm_device *drm = arg; 808 struct malidp_drm *malidp = drm->dev_private; 809 810 wake_up(&malidp->wq); 811 812 return IRQ_HANDLED; 813 } 814 815 int malidp_de_irq_init(struct drm_device *drm, int irq) 816 { 817 struct malidp_drm *malidp = drm->dev_private; 818 struct malidp_hw_device *hwdev = malidp->dev; 819 int ret; 820 821 /* ensure interrupts are disabled */ 822 malidp_hw_disable_irq(hwdev, MALIDP_DE_BLOCK, 0xffffffff); 823 malidp_hw_clear_irq(hwdev, MALIDP_DE_BLOCK, 0xffffffff); 824 malidp_hw_disable_irq(hwdev, MALIDP_DC_BLOCK, 0xffffffff); 825 malidp_hw_clear_irq(hwdev, MALIDP_DC_BLOCK, 0xffffffff); 826 827 ret = devm_request_threaded_irq(drm->dev, irq, malidp_de_irq, 828 malidp_de_irq_thread_handler, 829 IRQF_SHARED, "malidp-de", drm); 830 if (ret < 0) { 831 DRM_ERROR("failed to install DE IRQ handler\n"); 832 return ret; 833 } 834 835 /* first enable the DC block IRQs */ 836 malidp_hw_enable_irq(hwdev, MALIDP_DC_BLOCK, 837 hwdev->hw->map.dc_irq_map.irq_mask); 838 839 /* now enable the DE block IRQs */ 840 malidp_hw_enable_irq(hwdev, MALIDP_DE_BLOCK, 841 hwdev->hw->map.de_irq_map.irq_mask); 842 843 return 0; 844 } 845 846 void malidp_de_irq_fini(struct drm_device *drm) 847 { 848 struct malidp_drm *malidp = drm->dev_private; 849 struct malidp_hw_device *hwdev = malidp->dev; 850 851 malidp_hw_disable_irq(hwdev, MALIDP_DE_BLOCK, 852 hwdev->hw->map.de_irq_map.irq_mask); 853 malidp_hw_disable_irq(hwdev, MALIDP_DC_BLOCK, 854 hwdev->hw->map.dc_irq_map.irq_mask); 855 } 856 857 static irqreturn_t malidp_se_irq(int irq, void *arg) 858 { 859 struct drm_device *drm = arg; 860 struct malidp_drm *malidp = drm->dev_private; 861 struct malidp_hw_device *hwdev = malidp->dev; 862 struct malidp_hw *hw = hwdev->hw; 863 const struct malidp_irq_map *se = &hw->map.se_irq_map; 864 u32 status, mask; 865 866 /* 867 * if we are suspended it is likely that we were invoked because 868 * we share an interrupt line with some other driver, don't try 869 * to read the hardware registers 870 */ 871 if (hwdev->pm_suspended) 872 return IRQ_NONE; 873 874 status = malidp_hw_read(hwdev, hw->map.se_base + MALIDP_REG_STATUS); 875 if (!(status & se->irq_mask)) 876 return IRQ_NONE; 877 878 mask = malidp_hw_read(hwdev, hw->map.se_base + MALIDP_REG_MASKIRQ); 879 status = malidp_hw_read(hwdev, hw->map.se_base + MALIDP_REG_STATUS); 880 status &= mask; 881 /* ToDo: status decoding and firing up of VSYNC and page flip events */ 882 883 malidp_hw_clear_irq(hwdev, MALIDP_SE_BLOCK, status); 884 885 return IRQ_HANDLED; 886 } 887 888 static irqreturn_t malidp_se_irq_thread_handler(int irq, void *arg) 889 { 890 return IRQ_HANDLED; 891 } 892 893 int malidp_se_irq_init(struct drm_device *drm, int irq) 894 { 895 struct malidp_drm *malidp = drm->dev_private; 896 struct malidp_hw_device *hwdev = malidp->dev; 897 int ret; 898 899 /* ensure interrupts are disabled */ 900 malidp_hw_disable_irq(hwdev, MALIDP_SE_BLOCK, 0xffffffff); 901 malidp_hw_clear_irq(hwdev, MALIDP_SE_BLOCK, 0xffffffff); 902 903 ret = devm_request_threaded_irq(drm->dev, irq, malidp_se_irq, 904 malidp_se_irq_thread_handler, 905 IRQF_SHARED, "malidp-se", drm); 906 if (ret < 0) { 907 DRM_ERROR("failed to install SE IRQ handler\n"); 908 return ret; 909 } 910 911 malidp_hw_enable_irq(hwdev, MALIDP_SE_BLOCK, 912 hwdev->hw->map.se_irq_map.irq_mask); 913 914 return 0; 915 } 916 917 void malidp_se_irq_fini(struct drm_device *drm) 918 { 919 struct malidp_drm *malidp = drm->dev_private; 920 struct malidp_hw_device *hwdev = malidp->dev; 921 922 malidp_hw_disable_irq(hwdev, MALIDP_SE_BLOCK, 923 hwdev->hw->map.se_irq_map.irq_mask); 924 } 925