1/* 2 * Frame buffer driver for ADV7393/2 video encoder 3 * 4 * Copyright 2006-2009 Analog Devices Inc. 5 * Licensed under the GPL-2 or late. 6 */ 7 8/* 9 * TODO: Remove Globals 10 * TODO: Code Cleanup 11 */ 12 13#define pr_fmt(fmt) DRIVER_NAME ": " fmt 14 15#include <linux/module.h> 16#include <linux/kernel.h> 17#include <linux/errno.h> 18#include <linux/string.h> 19#include <linux/mm.h> 20#include <linux/tty.h> 21#include <linux/slab.h> 22#include <linux/delay.h> 23#include <linux/fb.h> 24#include <linux/ioport.h> 25#include <linux/init.h> 26#include <linux/types.h> 27#include <linux/interrupt.h> 28#include <linux/sched.h> 29#include <asm/blackfin.h> 30#include <asm/irq.h> 31#include <asm/dma.h> 32#include <linux/uaccess.h> 33#include <linux/gpio.h> 34#include <asm/portmux.h> 35 36#include <linux/dma-mapping.h> 37#include <linux/proc_fs.h> 38#include <linux/platform_device.h> 39#include <linux/i2c.h> 40 41#include "bfin_adv7393fb.h" 42 43static int mode = VMODE; 44static int mem = VMEM; 45static int nocursor = 1; 46 47static const unsigned short ppi_pins[] = { 48 P_PPI0_CLK, P_PPI0_FS1, P_PPI0_FS2, 49 P_PPI0_D0, P_PPI0_D1, P_PPI0_D2, P_PPI0_D3, 50 P_PPI0_D4, P_PPI0_D5, P_PPI0_D6, P_PPI0_D7, 51 P_PPI0_D8, P_PPI0_D9, P_PPI0_D10, P_PPI0_D11, 52 P_PPI0_D12, P_PPI0_D13, P_PPI0_D14, P_PPI0_D15, 53 0 54}; 55 56/* 57 * card parameters 58 */ 59 60static struct bfin_adv7393_fb_par { 61 /* structure holding blackfin / adv7393 parameters when 62 screen is blanked */ 63 struct { 64 u8 Mode; /* ntsc/pal/? */ 65 } vga_state; 66 atomic_t ref_count; 67} bfin_par; 68 69/* --------------------------------------------------------------------- */ 70 71static struct fb_var_screeninfo bfin_adv7393_fb_defined = { 72 .xres = 720, 73 .yres = 480, 74 .xres_virtual = 720, 75 .yres_virtual = 480, 76 .bits_per_pixel = 16, 77 .activate = FB_ACTIVATE_TEST, 78 .height = -1, 79 .width = -1, 80 .left_margin = 0, 81 .right_margin = 0, 82 .upper_margin = 0, 83 .lower_margin = 0, 84 .vmode = FB_VMODE_INTERLACED, 85 .red = {11, 5, 0}, 86 .green = {5, 6, 0}, 87 .blue = {0, 5, 0}, 88 .transp = {0, 0, 0}, 89}; 90 91static struct fb_fix_screeninfo bfin_adv7393_fb_fix = { 92 .id = "BFIN ADV7393", 93 .smem_len = 720 * 480 * 2, 94 .type = FB_TYPE_PACKED_PIXELS, 95 .visual = FB_VISUAL_TRUECOLOR, 96 .xpanstep = 0, 97 .ypanstep = 0, 98 .line_length = 720 * 2, 99 .accel = FB_ACCEL_NONE 100}; 101 102static struct fb_ops bfin_adv7393_fb_ops = { 103 .owner = THIS_MODULE, 104 .fb_open = bfin_adv7393_fb_open, 105 .fb_release = bfin_adv7393_fb_release, 106 .fb_check_var = bfin_adv7393_fb_check_var, 107 .fb_pan_display = bfin_adv7393_fb_pan_display, 108 .fb_blank = bfin_adv7393_fb_blank, 109 .fb_fillrect = cfb_fillrect, 110 .fb_copyarea = cfb_copyarea, 111 .fb_imageblit = cfb_imageblit, 112 .fb_cursor = bfin_adv7393_fb_cursor, 113 .fb_setcolreg = bfin_adv7393_fb_setcolreg, 114}; 115 116static int dma_desc_list(struct adv7393fb_device *fbdev, u16 arg) 117{ 118 if (arg == BUILD) { /* Build */ 119 fbdev->vb1 = l1_data_sram_zalloc(sizeof(struct dmasg)); 120 if (fbdev->vb1 == NULL) 121 goto error; 122 123 fbdev->av1 = l1_data_sram_zalloc(sizeof(struct dmasg)); 124 if (fbdev->av1 == NULL) 125 goto error; 126 127 fbdev->vb2 = l1_data_sram_zalloc(sizeof(struct dmasg)); 128 if (fbdev->vb2 == NULL) 129 goto error; 130 131 fbdev->av2 = l1_data_sram_zalloc(sizeof(struct dmasg)); 132 if (fbdev->av2 == NULL) 133 goto error; 134 135 /* Build linked DMA descriptor list */ 136 fbdev->vb1->next_desc_addr = fbdev->av1; 137 fbdev->av1->next_desc_addr = fbdev->vb2; 138 fbdev->vb2->next_desc_addr = fbdev->av2; 139 fbdev->av2->next_desc_addr = fbdev->vb1; 140 141 /* Save list head */ 142 fbdev->descriptor_list_head = fbdev->av2; 143 144 /* Vertical Blanking Field 1 */ 145 fbdev->vb1->start_addr = VB_DUMMY_MEMORY_SOURCE; 146 fbdev->vb1->cfg = DMA_CFG_VAL; 147 148 fbdev->vb1->x_count = 149 fbdev->modes[mode].xres + fbdev->modes[mode].boeft_blank; 150 151 fbdev->vb1->x_modify = 0; 152 fbdev->vb1->y_count = fbdev->modes[mode].vb1_lines; 153 fbdev->vb1->y_modify = 0; 154 155 /* Active Video Field 1 */ 156 157 fbdev->av1->start_addr = (unsigned long)fbdev->fb_mem; 158 fbdev->av1->cfg = DMA_CFG_VAL; 159 fbdev->av1->x_count = 160 fbdev->modes[mode].xres + fbdev->modes[mode].boeft_blank; 161 fbdev->av1->x_modify = fbdev->modes[mode].bpp / 8; 162 fbdev->av1->y_count = fbdev->modes[mode].a_lines; 163 fbdev->av1->y_modify = 164 (fbdev->modes[mode].xres - fbdev->modes[mode].boeft_blank + 165 1) * (fbdev->modes[mode].bpp / 8); 166 167 /* Vertical Blanking Field 2 */ 168 169 fbdev->vb2->start_addr = VB_DUMMY_MEMORY_SOURCE; 170 fbdev->vb2->cfg = DMA_CFG_VAL; 171 fbdev->vb2->x_count = 172 fbdev->modes[mode].xres + fbdev->modes[mode].boeft_blank; 173 174 fbdev->vb2->x_modify = 0; 175 fbdev->vb2->y_count = fbdev->modes[mode].vb2_lines; 176 fbdev->vb2->y_modify = 0; 177 178 /* Active Video Field 2 */ 179 180 fbdev->av2->start_addr = 181 (unsigned long)fbdev->fb_mem + fbdev->line_len; 182 183 fbdev->av2->cfg = DMA_CFG_VAL; 184 185 fbdev->av2->x_count = 186 fbdev->modes[mode].xres + fbdev->modes[mode].boeft_blank; 187 188 fbdev->av2->x_modify = (fbdev->modes[mode].bpp / 8); 189 fbdev->av2->y_count = fbdev->modes[mode].a_lines; 190 191 fbdev->av2->y_modify = 192 (fbdev->modes[mode].xres - fbdev->modes[mode].boeft_blank + 193 1) * (fbdev->modes[mode].bpp / 8); 194 195 return 1; 196 } 197 198error: 199 l1_data_sram_free(fbdev->vb1); 200 l1_data_sram_free(fbdev->av1); 201 l1_data_sram_free(fbdev->vb2); 202 l1_data_sram_free(fbdev->av2); 203 204 return 0; 205} 206 207static int bfin_config_dma(struct adv7393fb_device *fbdev) 208{ 209 BUG_ON(!(fbdev->fb_mem)); 210 211 set_dma_x_count(CH_PPI, fbdev->descriptor_list_head->x_count); 212 set_dma_x_modify(CH_PPI, fbdev->descriptor_list_head->x_modify); 213 set_dma_y_count(CH_PPI, fbdev->descriptor_list_head->y_count); 214 set_dma_y_modify(CH_PPI, fbdev->descriptor_list_head->y_modify); 215 set_dma_start_addr(CH_PPI, fbdev->descriptor_list_head->start_addr); 216 set_dma_next_desc_addr(CH_PPI, 217 fbdev->descriptor_list_head->next_desc_addr); 218 set_dma_config(CH_PPI, fbdev->descriptor_list_head->cfg); 219 220 return 1; 221} 222 223static void bfin_disable_dma(void) 224{ 225 bfin_write_DMA0_CONFIG(bfin_read_DMA0_CONFIG() & ~DMAEN); 226} 227 228static void bfin_config_ppi(struct adv7393fb_device *fbdev) 229{ 230 if (ANOMALY_05000183) { 231 bfin_write_TIMER2_CONFIG(WDTH_CAP); 232 bfin_write_TIMER_ENABLE(TIMEN2); 233 } 234 235 bfin_write_PPI_CONTROL(0x381E); 236 bfin_write_PPI_FRAME(fbdev->modes[mode].tot_lines); 237 bfin_write_PPI_COUNT(fbdev->modes[mode].xres + 238 fbdev->modes[mode].boeft_blank - 1); 239 bfin_write_PPI_DELAY(fbdev->modes[mode].aoeft_blank - 1); 240} 241 242static void bfin_enable_ppi(void) 243{ 244 bfin_write_PPI_CONTROL(bfin_read_PPI_CONTROL() | PORT_EN); 245} 246 247static void bfin_disable_ppi(void) 248{ 249 bfin_write_PPI_CONTROL(bfin_read_PPI_CONTROL() & ~PORT_EN); 250} 251 252static inline int adv7393_write(struct i2c_client *client, u8 reg, u8 value) 253{ 254 return i2c_smbus_write_byte_data(client, reg, value); 255} 256 257static inline int adv7393_read(struct i2c_client *client, u8 reg) 258{ 259 return i2c_smbus_read_byte_data(client, reg); 260} 261 262static int 263adv7393_write_block(struct i2c_client *client, 264 const u8 *data, unsigned int len) 265{ 266 int ret = -1; 267 u8 reg; 268 269 while (len >= 2) { 270 reg = *data++; 271 ret = adv7393_write(client, reg, *data++); 272 if (ret < 0) 273 break; 274 len -= 2; 275 } 276 277 return ret; 278} 279 280static int adv7393_mode(struct i2c_client *client, u16 mode) 281{ 282 switch (mode) { 283 case POWER_ON: /* ADV7393 Sleep mode OFF */ 284 adv7393_write(client, 0x00, 0x1E); 285 break; 286 case POWER_DOWN: /* ADV7393 Sleep mode ON */ 287 adv7393_write(client, 0x00, 0x1F); 288 break; 289 case BLANK_OFF: /* Pixel Data Valid */ 290 adv7393_write(client, 0x82, 0xCB); 291 break; 292 case BLANK_ON: /* Pixel Data Invalid */ 293 adv7393_write(client, 0x82, 0x8B); 294 break; 295 default: 296 return -EINVAL; 297 break; 298 } 299 return 0; 300} 301 302static irqreturn_t ppi_irq_error(int irq, void *dev_id) 303{ 304 305 struct adv7393fb_device *fbdev = (struct adv7393fb_device *)dev_id; 306 307 u16 status = bfin_read_PPI_STATUS(); 308 309 pr_debug("%s: PPI Status = 0x%X\n", __func__, status); 310 311 if (status) { 312 bfin_disable_dma(); /* TODO: Check Sequence */ 313 bfin_disable_ppi(); 314 bfin_clear_PPI_STATUS(); 315 bfin_config_dma(fbdev); 316 bfin_enable_ppi(); 317 } 318 319 return IRQ_HANDLED; 320 321} 322 323static int proc_output(char *buf) 324{ 325 char *p = buf; 326 327 p += sprintf(p, 328 "Usage:\n" 329 "echo 0x[REG][Value] > adv7393\n" 330 "example: echo 0x1234 >adv7393\n" 331 "writes 0x34 into Register 0x12\n"); 332 333 return p - buf; 334} 335 336static ssize_t 337adv7393_read_proc(struct file *file, char __user *buf, 338 size_t size, loff_t *ppos) 339{ 340 static const char message[] = "Usage:\n" 341 "echo 0x[REG][Value] > adv7393\n" 342 "example: echo 0x1234 >adv7393\n" 343 "writes 0x34 into Register 0x12\n"; 344 return simple_read_from_buffer(buf, size, ppos, message, 345 sizeof(message)); 346} 347 348static ssize_t 349adv7393_write_proc(struct file *file, const char __user * buffer, 350 size_t count, loff_t *ppos) 351{ 352 struct adv7393fb_device *fbdev = PDE_DATA(file_inode(file)); 353 unsigned int val; 354 int ret; 355 356 ret = kstrtouint_from_user(buffer, count, 0, &val); 357 if (ret) 358 return -EFAULT; 359 360 adv7393_write(fbdev->client, val >> 8, val & 0xff); 361 362 return count; 363} 364 365static const struct file_operations fops = { 366 .read = adv7393_read_proc, 367 .write = adv7393_write_proc, 368 .llseek = default_llseek, 369}; 370 371static int bfin_adv7393_fb_probe(struct i2c_client *client, 372 const struct i2c_device_id *id) 373{ 374 int ret = 0; 375 struct proc_dir_entry *entry; 376 int num_modes = ARRAY_SIZE(known_modes); 377 378 struct adv7393fb_device *fbdev = NULL; 379 380 if (mem > 2) { 381 dev_err(&client->dev, "mem out of allowed range [1;2]\n"); 382 return -EINVAL; 383 } 384 385 if (mode > num_modes) { 386 dev_err(&client->dev, "mode %d: not supported", mode); 387 return -EFAULT; 388 } 389 390 fbdev = kzalloc(sizeof(*fbdev), GFP_KERNEL); 391 if (!fbdev) { 392 dev_err(&client->dev, "failed to allocate device private record"); 393 return -ENOMEM; 394 } 395 396 i2c_set_clientdata(client, fbdev); 397 398 fbdev->modes = known_modes; 399 fbdev->client = client; 400 401 fbdev->fb_len = 402 mem * fbdev->modes[mode].xres * fbdev->modes[mode].xres * 403 (fbdev->modes[mode].bpp / 8); 404 405 fbdev->line_len = 406 fbdev->modes[mode].xres * (fbdev->modes[mode].bpp / 8); 407 408 /* Workaround "PPI Does Not Start Properly In Specific Mode" */ 409 if (ANOMALY_05000400) { 410 ret = gpio_request_one(P_IDENT(P_PPI0_FS3), GPIOF_OUT_INIT_LOW, 411 "PPI0_FS3"); 412 if (ret) { 413 dev_err(&client->dev, "PPI0_FS3 GPIO request failed\n"); 414 ret = -EBUSY; 415 goto free_fbdev; 416 } 417 } 418 419 if (peripheral_request_list(ppi_pins, DRIVER_NAME)) { 420 dev_err(&client->dev, "requesting PPI peripheral failed\n"); 421 ret = -EFAULT; 422 goto free_gpio; 423 } 424 425 fbdev->fb_mem = 426 dma_alloc_coherent(NULL, fbdev->fb_len, &fbdev->dma_handle, 427 GFP_KERNEL); 428 429 if (NULL == fbdev->fb_mem) { 430 dev_err(&client->dev, "couldn't allocate dma buffer (%d bytes)\n", 431 (u32) fbdev->fb_len); 432 ret = -ENOMEM; 433 goto free_ppi_pins; 434 } 435 436 fbdev->info.screen_base = (void *)fbdev->fb_mem; 437 bfin_adv7393_fb_fix.smem_start = (int)fbdev->fb_mem; 438 439 bfin_adv7393_fb_fix.smem_len = fbdev->fb_len; 440 bfin_adv7393_fb_fix.line_length = fbdev->line_len; 441 442 if (mem > 1) 443 bfin_adv7393_fb_fix.ypanstep = 1; 444 445 bfin_adv7393_fb_defined.red.length = 5; 446 bfin_adv7393_fb_defined.green.length = 6; 447 bfin_adv7393_fb_defined.blue.length = 5; 448 449 bfin_adv7393_fb_defined.xres = fbdev->modes[mode].xres; 450 bfin_adv7393_fb_defined.yres = fbdev->modes[mode].yres; 451 bfin_adv7393_fb_defined.xres_virtual = fbdev->modes[mode].xres; 452 bfin_adv7393_fb_defined.yres_virtual = mem * fbdev->modes[mode].yres; 453 bfin_adv7393_fb_defined.bits_per_pixel = fbdev->modes[mode].bpp; 454 455 fbdev->info.fbops = &bfin_adv7393_fb_ops; 456 fbdev->info.var = bfin_adv7393_fb_defined; 457 fbdev->info.fix = bfin_adv7393_fb_fix; 458 fbdev->info.par = &bfin_par; 459 fbdev->info.flags = FBINFO_DEFAULT; 460 461 fbdev->info.pseudo_palette = kzalloc(sizeof(u32) * 16, GFP_KERNEL); 462 if (!fbdev->info.pseudo_palette) { 463 dev_err(&client->dev, "failed to allocate pseudo_palette\n"); 464 ret = -ENOMEM; 465 goto free_fb_mem; 466 } 467 468 if (fb_alloc_cmap(&fbdev->info.cmap, BFIN_LCD_NBR_PALETTE_ENTRIES, 0) < 0) { 469 dev_err(&client->dev, "failed to allocate colormap (%d entries)\n", 470 BFIN_LCD_NBR_PALETTE_ENTRIES); 471 ret = -EFAULT; 472 goto free_palette; 473 } 474 475 if (request_dma(CH_PPI, "BF5xx_PPI_DMA") < 0) { 476 dev_err(&client->dev, "unable to request PPI DMA\n"); 477 ret = -EFAULT; 478 goto free_cmap; 479 } 480 481 if (request_irq(IRQ_PPI_ERROR, ppi_irq_error, 0, 482 "PPI ERROR", fbdev) < 0) { 483 dev_err(&client->dev, "unable to request PPI ERROR IRQ\n"); 484 ret = -EFAULT; 485 goto free_ch_ppi; 486 } 487 488 fbdev->open = 0; 489 490 ret = adv7393_write_block(client, fbdev->modes[mode].adv7393_i2c_initd, 491 fbdev->modes[mode].adv7393_i2c_initd_len); 492 493 if (ret) { 494 dev_err(&client->dev, "i2c attach: init error\n"); 495 goto free_irq_ppi; 496 } 497 498 499 if (register_framebuffer(&fbdev->info) < 0) { 500 dev_err(&client->dev, "unable to register framebuffer\n"); 501 ret = -EFAULT; 502 goto free_irq_ppi; 503 } 504 505 dev_info(&client->dev, "fb%d: %s frame buffer device\n", 506 fbdev->info.node, fbdev->info.fix.id); 507 dev_info(&client->dev, "fb memory address : 0x%p\n", fbdev->fb_mem); 508 509 entry = proc_create_data("driver/adv7393", 0, NULL, &fops, fbdev); 510 if (!entry) { 511 dev_err(&client->dev, "unable to create /proc entry\n"); 512 ret = -EFAULT; 513 goto free_fb; 514 } 515 return 0; 516 517free_fb: 518 unregister_framebuffer(&fbdev->info); 519free_irq_ppi: 520 free_irq(IRQ_PPI_ERROR, fbdev); 521free_ch_ppi: 522 free_dma(CH_PPI); 523free_cmap: 524 fb_dealloc_cmap(&fbdev->info.cmap); 525free_palette: 526 kfree(fbdev->info.pseudo_palette); 527free_fb_mem: 528 dma_free_coherent(NULL, fbdev->fb_len, fbdev->fb_mem, 529 fbdev->dma_handle); 530free_ppi_pins: 531 peripheral_free_list(ppi_pins); 532free_gpio: 533 if (ANOMALY_05000400) 534 gpio_free(P_IDENT(P_PPI0_FS3)); 535free_fbdev: 536 kfree(fbdev); 537 538 return ret; 539} 540 541static int bfin_adv7393_fb_open(struct fb_info *info, int user) 542{ 543 struct adv7393fb_device *fbdev = to_adv7393fb_device(info); 544 545 fbdev->info.screen_base = (void *)fbdev->fb_mem; 546 if (!fbdev->info.screen_base) { 547 dev_err(&fbdev->client->dev, "unable to map device\n"); 548 return -ENOMEM; 549 } 550 551 fbdev->open = 1; 552 dma_desc_list(fbdev, BUILD); 553 adv7393_mode(fbdev->client, BLANK_OFF); 554 bfin_config_ppi(fbdev); 555 bfin_config_dma(fbdev); 556 bfin_enable_ppi(); 557 558 return 0; 559} 560 561static int bfin_adv7393_fb_release(struct fb_info *info, int user) 562{ 563 struct adv7393fb_device *fbdev = to_adv7393fb_device(info); 564 565 adv7393_mode(fbdev->client, BLANK_ON); 566 bfin_disable_dma(); 567 bfin_disable_ppi(); 568 dma_desc_list(fbdev, DESTRUCT); 569 fbdev->open = 0; 570 return 0; 571} 572 573static int 574bfin_adv7393_fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info) 575{ 576 577 switch (var->bits_per_pixel) { 578 case 16:/* DIRECTCOLOUR, 64k */ 579 var->red.offset = info->var.red.offset; 580 var->green.offset = info->var.green.offset; 581 var->blue.offset = info->var.blue.offset; 582 var->red.length = info->var.red.length; 583 var->green.length = info->var.green.length; 584 var->blue.length = info->var.blue.length; 585 var->transp.offset = 0; 586 var->transp.length = 0; 587 var->transp.msb_right = 0; 588 var->red.msb_right = 0; 589 var->green.msb_right = 0; 590 var->blue.msb_right = 0; 591 break; 592 default: 593 pr_debug("%s: depth not supported: %u BPP\n", __func__, 594 var->bits_per_pixel); 595 return -EINVAL; 596 } 597 598 if (info->var.xres != var->xres || 599 info->var.yres != var->yres || 600 info->var.xres_virtual != var->xres_virtual || 601 info->var.yres_virtual != var->yres_virtual) { 602 pr_debug("%s: Resolution not supported: X%u x Y%u\n", 603 __func__, var->xres, var->yres); 604 return -EINVAL; 605 } 606 607 /* 608 * Memory limit 609 */ 610 611 if ((info->fix.line_length * var->yres_virtual) > info->fix.smem_len) { 612 pr_debug("%s: Memory Limit requested yres_virtual = %u\n", 613 __func__, var->yres_virtual); 614 return -ENOMEM; 615 } 616 617 return 0; 618} 619 620static int 621bfin_adv7393_fb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info) 622{ 623 int dy; 624 u32 dmaaddr; 625 struct adv7393fb_device *fbdev = to_adv7393fb_device(info); 626 627 if (!var || !info) 628 return -EINVAL; 629 630 if (var->xoffset - info->var.xoffset) { 631 /* No support for X panning for now! */ 632 return -EINVAL; 633 } 634 dy = var->yoffset - info->var.yoffset; 635 636 if (dy) { 637 pr_debug("%s: Panning screen of %d lines\n", __func__, dy); 638 639 dmaaddr = fbdev->av1->start_addr; 640 dmaaddr += (info->fix.line_length * dy); 641 /* TODO: Wait for current frame to finished */ 642 643 fbdev->av1->start_addr = (unsigned long)dmaaddr; 644 fbdev->av2->start_addr = (unsigned long)dmaaddr + fbdev->line_len; 645 } 646 647 return 0; 648 649} 650 651/* 0 unblank, 1 blank, 2 no vsync, 3 no hsync, 4 off */ 652static int bfin_adv7393_fb_blank(int blank, struct fb_info *info) 653{ 654 struct adv7393fb_device *fbdev = to_adv7393fb_device(info); 655 656 switch (blank) { 657 658 case VESA_NO_BLANKING: 659 /* Turn on panel */ 660 adv7393_mode(fbdev->client, BLANK_OFF); 661 break; 662 663 case VESA_VSYNC_SUSPEND: 664 case VESA_HSYNC_SUSPEND: 665 case VESA_POWERDOWN: 666 /* Turn off panel */ 667 adv7393_mode(fbdev->client, BLANK_ON); 668 break; 669 670 default: 671 return -EINVAL; 672 break; 673 } 674 return 0; 675} 676 677int bfin_adv7393_fb_cursor(struct fb_info *info, struct fb_cursor *cursor) 678{ 679 if (nocursor) 680 return 0; 681 else 682 return -EINVAL; /* just to force soft_cursor() call */ 683} 684 685static int bfin_adv7393_fb_setcolreg(u_int regno, u_int red, u_int green, 686 u_int blue, u_int transp, 687 struct fb_info *info) 688{ 689 if (regno >= BFIN_LCD_NBR_PALETTE_ENTRIES) 690 return -EINVAL; 691 692 if (info->var.grayscale) 693 /* grayscale = 0.30*R + 0.59*G + 0.11*B */ 694 red = green = blue = (red * 77 + green * 151 + blue * 28) >> 8; 695 696 if (info->fix.visual == FB_VISUAL_TRUECOLOR) { 697 u32 value; 698 /* Place color in the pseudopalette */ 699 if (regno > 16) 700 return -EINVAL; 701 702 red >>= (16 - info->var.red.length); 703 green >>= (16 - info->var.green.length); 704 blue >>= (16 - info->var.blue.length); 705 706 value = (red << info->var.red.offset) | 707 (green << info->var.green.offset)| 708 (blue << info->var.blue.offset); 709 value &= 0xFFFF; 710 711 ((u32 *) (info->pseudo_palette))[regno] = value; 712 } 713 714 return 0; 715} 716 717static int bfin_adv7393_fb_remove(struct i2c_client *client) 718{ 719 struct adv7393fb_device *fbdev = i2c_get_clientdata(client); 720 721 adv7393_mode(client, POWER_DOWN); 722 723 if (fbdev->fb_mem) 724 dma_free_coherent(NULL, fbdev->fb_len, fbdev->fb_mem, fbdev->dma_handle); 725 free_dma(CH_PPI); 726 free_irq(IRQ_PPI_ERROR, fbdev); 727 unregister_framebuffer(&fbdev->info); 728 remove_proc_entry("driver/adv7393", NULL); 729 fb_dealloc_cmap(&fbdev->info.cmap); 730 kfree(fbdev->info.pseudo_palette); 731 732 if (ANOMALY_05000400) 733 gpio_free(P_IDENT(P_PPI0_FS3)); /* FS3 */ 734 peripheral_free_list(ppi_pins); 735 kfree(fbdev); 736 737 return 0; 738} 739 740#ifdef CONFIG_PM 741static int bfin_adv7393_fb_suspend(struct device *dev) 742{ 743 struct adv7393fb_device *fbdev = dev_get_drvdata(dev); 744 745 if (fbdev->open) { 746 bfin_disable_dma(); 747 bfin_disable_ppi(); 748 dma_desc_list(fbdev, DESTRUCT); 749 } 750 adv7393_mode(fbdev->client, POWER_DOWN); 751 752 return 0; 753} 754 755static int bfin_adv7393_fb_resume(struct device *dev) 756{ 757 struct adv7393fb_device *fbdev = dev_get_drvdata(dev); 758 759 adv7393_mode(fbdev->client, POWER_ON); 760 761 if (fbdev->open) { 762 dma_desc_list(fbdev, BUILD); 763 bfin_config_ppi(fbdev); 764 bfin_config_dma(fbdev); 765 bfin_enable_ppi(); 766 } 767 768 return 0; 769} 770 771static const struct dev_pm_ops bfin_adv7393_dev_pm_ops = { 772 .suspend = bfin_adv7393_fb_suspend, 773 .resume = bfin_adv7393_fb_resume, 774}; 775#endif 776 777static const struct i2c_device_id bfin_adv7393_id[] = { 778 {DRIVER_NAME, 0}, 779 {} 780}; 781 782MODULE_DEVICE_TABLE(i2c, bfin_adv7393_id); 783 784static struct i2c_driver bfin_adv7393_fb_driver = { 785 .driver = { 786 .name = DRIVER_NAME, 787#ifdef CONFIG_PM 788 .pm = &bfin_adv7393_dev_pm_ops, 789#endif 790 }, 791 .probe = bfin_adv7393_fb_probe, 792 .remove = bfin_adv7393_fb_remove, 793 .id_table = bfin_adv7393_id, 794}; 795 796static int __init bfin_adv7393_fb_driver_init(void) 797{ 798#if defined(CONFIG_I2C_BLACKFIN_TWI) || defined(CONFIG_I2C_BLACKFIN_TWI_MODULE) 799 request_module("i2c-bfin-twi"); 800#else 801 request_module("i2c-gpio"); 802#endif 803 804 return i2c_add_driver(&bfin_adv7393_fb_driver); 805} 806module_init(bfin_adv7393_fb_driver_init); 807 808static void __exit bfin_adv7393_fb_driver_cleanup(void) 809{ 810 i2c_del_driver(&bfin_adv7393_fb_driver); 811} 812module_exit(bfin_adv7393_fb_driver_cleanup); 813 814MODULE_LICENSE("GPL"); 815MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>"); 816MODULE_DESCRIPTION("Frame buffer driver for ADV7393/2 Video Encoder"); 817 818module_param(mode, int, 0); 819MODULE_PARM_DESC(mode, 820 "Video Mode (0=NTSC,1=PAL,2=NTSC 640x480,3=PAL 640x480,4=NTSC YCbCr input,5=PAL YCbCr input)"); 821 822module_param(mem, int, 0); 823MODULE_PARM_DESC(mem, 824 "Size of frame buffer memory 1=Single 2=Double Size (allows y-panning / frame stacking)"); 825 826module_param(nocursor, int, 0644); 827MODULE_PARM_DESC(nocursor, "cursor enable/disable"); 828