linux/drivers/media/pci/pt1/pt1.c
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   1// SPDX-License-Identifier: GPL-2.0-or-later
   2/*
   3 * driver for Earthsoft PT1/PT2
   4 *
   5 * Copyright (C) 2009 HIRANO Takahito <hiranotaka@zng.info>
   6 *
   7 * based on pt1dvr - http://pt1dvr.sourceforge.jp/
   8 *      by Tomoaki Ishikawa <tomy@users.sourceforge.jp>
   9 */
  10
  11#include <linux/kernel.h>
  12#include <linux/sched.h>
  13#include <linux/sched/signal.h>
  14#include <linux/hrtimer.h>
  15#include <linux/delay.h>
  16#include <linux/module.h>
  17#include <linux/slab.h>
  18#include <linux/vmalloc.h>
  19#include <linux/pci.h>
  20#include <linux/kthread.h>
  21#include <linux/freezer.h>
  22#include <linux/ratelimit.h>
  23#include <linux/string.h>
  24#include <linux/i2c.h>
  25
  26#include <media/dvbdev.h>
  27#include <media/dvb_demux.h>
  28#include <media/dmxdev.h>
  29#include <media/dvb_net.h>
  30#include <media/dvb_frontend.h>
  31
  32#include "tc90522.h"
  33#include "qm1d1b0004.h"
  34#include "dvb-pll.h"
  35
  36#define DRIVER_NAME "earth-pt1"
  37
  38#define PT1_PAGE_SHIFT 12
  39#define PT1_PAGE_SIZE (1 << PT1_PAGE_SHIFT)
  40#define PT1_NR_UPACKETS 1024
  41#define PT1_NR_BUFS 511
  42
  43struct pt1_buffer_page {
  44        __le32 upackets[PT1_NR_UPACKETS];
  45};
  46
  47struct pt1_table_page {
  48        __le32 next_pfn;
  49        __le32 buf_pfns[PT1_NR_BUFS];
  50};
  51
  52struct pt1_buffer {
  53        struct pt1_buffer_page *page;
  54        dma_addr_t addr;
  55};
  56
  57struct pt1_table {
  58        struct pt1_table_page *page;
  59        dma_addr_t addr;
  60        struct pt1_buffer bufs[PT1_NR_BUFS];
  61};
  62
  63enum pt1_fe_clk {
  64        PT1_FE_CLK_20MHZ,       /* PT1 */
  65        PT1_FE_CLK_25MHZ,       /* PT2 */
  66};
  67
  68#define PT1_NR_ADAPS 4
  69
  70struct pt1_adapter;
  71
  72struct pt1 {
  73        struct pci_dev *pdev;
  74        void __iomem *regs;
  75        struct i2c_adapter i2c_adap;
  76        int i2c_running;
  77        struct pt1_adapter *adaps[PT1_NR_ADAPS];
  78        struct pt1_table *tables;
  79        struct task_struct *kthread;
  80        int table_index;
  81        int buf_index;
  82
  83        struct mutex lock;
  84        int power;
  85        int reset;
  86
  87        enum pt1_fe_clk fe_clk;
  88};
  89
  90struct pt1_adapter {
  91        struct pt1 *pt1;
  92        int index;
  93
  94        u8 *buf;
  95        int upacket_count;
  96        int packet_count;
  97        int st_count;
  98
  99        struct dvb_adapter adap;
 100        struct dvb_demux demux;
 101        int users;
 102        struct dmxdev dmxdev;
 103        struct dvb_frontend *fe;
 104        struct i2c_client *demod_i2c_client;
 105        struct i2c_client *tuner_i2c_client;
 106        int (*orig_set_voltage)(struct dvb_frontend *fe,
 107                                enum fe_sec_voltage voltage);
 108        int (*orig_sleep)(struct dvb_frontend *fe);
 109        int (*orig_init)(struct dvb_frontend *fe);
 110
 111        enum fe_sec_voltage voltage;
 112        int sleep;
 113};
 114
 115union pt1_tuner_config {
 116        struct qm1d1b0004_config qm1d1b0004;
 117        struct dvb_pll_config tda6651;
 118};
 119
 120struct pt1_config {
 121        struct i2c_board_info demod_info;
 122        struct tc90522_config demod_cfg;
 123
 124        struct i2c_board_info tuner_info;
 125        union pt1_tuner_config tuner_cfg;
 126};
 127
 128static const struct pt1_config pt1_configs[PT1_NR_ADAPS] = {
 129        {
 130                .demod_info = {
 131                        I2C_BOARD_INFO(TC90522_I2C_DEV_SAT, 0x1b),
 132                },
 133                .tuner_info = {
 134                        I2C_BOARD_INFO("qm1d1b0004", 0x60),
 135                },
 136        },
 137        {
 138                .demod_info = {
 139                        I2C_BOARD_INFO(TC90522_I2C_DEV_TER, 0x1a),
 140                },
 141                .tuner_info = {
 142                        I2C_BOARD_INFO("tda665x_earthpt1", 0x61),
 143                },
 144        },
 145        {
 146                .demod_info = {
 147                        I2C_BOARD_INFO(TC90522_I2C_DEV_SAT, 0x19),
 148                },
 149                .tuner_info = {
 150                        I2C_BOARD_INFO("qm1d1b0004", 0x60),
 151                },
 152        },
 153        {
 154                .demod_info = {
 155                        I2C_BOARD_INFO(TC90522_I2C_DEV_TER, 0x18),
 156                },
 157                .tuner_info = {
 158                        I2C_BOARD_INFO("tda665x_earthpt1", 0x61),
 159                },
 160        },
 161};
 162
 163static const u8 va1j5jf8007s_20mhz_configs[][2] = {
 164        {0x04, 0x02}, {0x0d, 0x55}, {0x11, 0x40}, {0x13, 0x80}, {0x17, 0x01},
 165        {0x1c, 0x0a}, {0x1d, 0xaa}, {0x1e, 0x20}, {0x1f, 0x88}, {0x51, 0xb0},
 166        {0x52, 0x89}, {0x53, 0xb3}, {0x5a, 0x2d}, {0x5b, 0xd3}, {0x85, 0x69},
 167        {0x87, 0x04}, {0x8e, 0x02}, {0xa3, 0xf7}, {0xa5, 0xc0},
 168};
 169
 170static const u8 va1j5jf8007s_25mhz_configs[][2] = {
 171        {0x04, 0x02}, {0x11, 0x40}, {0x13, 0x80}, {0x17, 0x01}, {0x1c, 0x0a},
 172        {0x1d, 0xaa}, {0x1e, 0x20}, {0x1f, 0x88}, {0x51, 0xb0}, {0x52, 0x89},
 173        {0x53, 0xb3}, {0x5a, 0x2d}, {0x5b, 0xd3}, {0x85, 0x69}, {0x87, 0x04},
 174        {0x8e, 0x26}, {0xa3, 0xf7}, {0xa5, 0xc0},
 175};
 176
 177static const u8 va1j5jf8007t_20mhz_configs[][2] = {
 178        {0x03, 0x90}, {0x14, 0x8f}, {0x1c, 0x2a}, {0x1d, 0xa8}, {0x1e, 0xa2},
 179        {0x22, 0x83}, {0x31, 0x0d}, {0x32, 0xe0}, {0x39, 0xd3}, {0x3a, 0x00},
 180        {0x3b, 0x11}, {0x3c, 0x3f},
 181        {0x5c, 0x40}, {0x5f, 0x80}, {0x75, 0x02}, {0x76, 0x4e}, {0x77, 0x03},
 182        {0xef, 0x01}
 183};
 184
 185static const u8 va1j5jf8007t_25mhz_configs[][2] = {
 186        {0x03, 0x90}, {0x1c, 0x2a}, {0x1d, 0xa8}, {0x1e, 0xa2}, {0x22, 0x83},
 187        {0x3a, 0x04}, {0x3b, 0x11}, {0x3c, 0x3f}, {0x5c, 0x40}, {0x5f, 0x80},
 188        {0x75, 0x0a}, {0x76, 0x4c}, {0x77, 0x03}, {0xef, 0x01}
 189};
 190
 191static int config_demod(struct i2c_client *cl, enum pt1_fe_clk clk)
 192{
 193        int ret;
 194        bool is_sat;
 195        const u8 (*cfg_data)[2];
 196        int i, len;
 197
 198        is_sat = !strncmp(cl->name, TC90522_I2C_DEV_SAT,
 199                          strlen(TC90522_I2C_DEV_SAT));
 200        if (is_sat) {
 201                struct i2c_msg msg[2];
 202                u8 wbuf, rbuf;
 203
 204                wbuf = 0x07;
 205                msg[0].addr = cl->addr;
 206                msg[0].flags = 0;
 207                msg[0].len = 1;
 208                msg[0].buf = &wbuf;
 209
 210                msg[1].addr = cl->addr;
 211                msg[1].flags = I2C_M_RD;
 212                msg[1].len = 1;
 213                msg[1].buf = &rbuf;
 214                ret = i2c_transfer(cl->adapter, msg, 2);
 215                if (ret < 0)
 216                        return ret;
 217                if (rbuf != 0x41)
 218                        return -EIO;
 219        }
 220
 221        /* frontend init */
 222        if (clk == PT1_FE_CLK_20MHZ) {
 223                if (is_sat) {
 224                        cfg_data = va1j5jf8007s_20mhz_configs;
 225                        len = ARRAY_SIZE(va1j5jf8007s_20mhz_configs);
 226                } else {
 227                        cfg_data = va1j5jf8007t_20mhz_configs;
 228                        len = ARRAY_SIZE(va1j5jf8007t_20mhz_configs);
 229                }
 230        } else {
 231                if (is_sat) {
 232                        cfg_data = va1j5jf8007s_25mhz_configs;
 233                        len = ARRAY_SIZE(va1j5jf8007s_25mhz_configs);
 234                } else {
 235                        cfg_data = va1j5jf8007t_25mhz_configs;
 236                        len = ARRAY_SIZE(va1j5jf8007t_25mhz_configs);
 237                }
 238        }
 239
 240        for (i = 0; i < len; i++) {
 241                ret = i2c_master_send(cl, cfg_data[i], 2);
 242                if (ret < 0)
 243                        return ret;
 244        }
 245        return 0;
 246}
 247
 248/*
 249 * Init registers for (each pair of) terrestrial/satellite block in demod.
 250 * Note that resetting terr. block also resets its peer sat. block as well.
 251 * This function must be called before configuring any demod block
 252 * (before pt1_wakeup(), fe->ops.init()).
 253 */
 254static int pt1_demod_block_init(struct pt1 *pt1)
 255{
 256        struct i2c_client *cl;
 257        u8 buf[2] = {0x01, 0x80};
 258        int ret;
 259        int i;
 260
 261        /* reset all terr. & sat. pairs first */
 262        for (i = 0; i < PT1_NR_ADAPS; i++) {
 263                cl = pt1->adaps[i]->demod_i2c_client;
 264                if (strncmp(cl->name, TC90522_I2C_DEV_TER,
 265                            strlen(TC90522_I2C_DEV_TER)))
 266                        continue;
 267
 268                ret = i2c_master_send(cl, buf, 2);
 269                if (ret < 0)
 270                        return ret;
 271                usleep_range(30000, 50000);
 272        }
 273
 274        for (i = 0; i < PT1_NR_ADAPS; i++) {
 275                cl = pt1->adaps[i]->demod_i2c_client;
 276                if (strncmp(cl->name, TC90522_I2C_DEV_SAT,
 277                            strlen(TC90522_I2C_DEV_SAT)))
 278                        continue;
 279
 280                ret = i2c_master_send(cl, buf, 2);
 281                if (ret < 0)
 282                        return ret;
 283                usleep_range(30000, 50000);
 284        }
 285        return 0;
 286}
 287
 288static void pt1_write_reg(struct pt1 *pt1, int reg, u32 data)
 289{
 290        writel(data, pt1->regs + reg * 4);
 291}
 292
 293static u32 pt1_read_reg(struct pt1 *pt1, int reg)
 294{
 295        return readl(pt1->regs + reg * 4);
 296}
 297
 298static unsigned int pt1_nr_tables = 8;
 299module_param_named(nr_tables, pt1_nr_tables, uint, 0);
 300
 301static void pt1_increment_table_count(struct pt1 *pt1)
 302{
 303        pt1_write_reg(pt1, 0, 0x00000020);
 304}
 305
 306static void pt1_init_table_count(struct pt1 *pt1)
 307{
 308        pt1_write_reg(pt1, 0, 0x00000010);
 309}
 310
 311static void pt1_register_tables(struct pt1 *pt1, u32 first_pfn)
 312{
 313        pt1_write_reg(pt1, 5, first_pfn);
 314        pt1_write_reg(pt1, 0, 0x0c000040);
 315}
 316
 317static void pt1_unregister_tables(struct pt1 *pt1)
 318{
 319        pt1_write_reg(pt1, 0, 0x08080000);
 320}
 321
 322static int pt1_sync(struct pt1 *pt1)
 323{
 324        int i;
 325        for (i = 0; i < 57; i++) {
 326                if (pt1_read_reg(pt1, 0) & 0x20000000)
 327                        return 0;
 328                pt1_write_reg(pt1, 0, 0x00000008);
 329        }
 330        dev_err(&pt1->pdev->dev, "could not sync\n");
 331        return -EIO;
 332}
 333
 334static u64 pt1_identify(struct pt1 *pt1)
 335{
 336        int i;
 337        u64 id = 0;
 338        for (i = 0; i < 57; i++) {
 339                id |= (u64)(pt1_read_reg(pt1, 0) >> 30 & 1) << i;
 340                pt1_write_reg(pt1, 0, 0x00000008);
 341        }
 342        return id;
 343}
 344
 345static int pt1_unlock(struct pt1 *pt1)
 346{
 347        int i;
 348        pt1_write_reg(pt1, 0, 0x00000008);
 349        for (i = 0; i < 3; i++) {
 350                if (pt1_read_reg(pt1, 0) & 0x80000000)
 351                        return 0;
 352                usleep_range(1000, 2000);
 353        }
 354        dev_err(&pt1->pdev->dev, "could not unlock\n");
 355        return -EIO;
 356}
 357
 358static int pt1_reset_pci(struct pt1 *pt1)
 359{
 360        int i;
 361        pt1_write_reg(pt1, 0, 0x01010000);
 362        pt1_write_reg(pt1, 0, 0x01000000);
 363        for (i = 0; i < 10; i++) {
 364                if (pt1_read_reg(pt1, 0) & 0x00000001)
 365                        return 0;
 366                usleep_range(1000, 2000);
 367        }
 368        dev_err(&pt1->pdev->dev, "could not reset PCI\n");
 369        return -EIO;
 370}
 371
 372static int pt1_reset_ram(struct pt1 *pt1)
 373{
 374        int i;
 375        pt1_write_reg(pt1, 0, 0x02020000);
 376        pt1_write_reg(pt1, 0, 0x02000000);
 377        for (i = 0; i < 10; i++) {
 378                if (pt1_read_reg(pt1, 0) & 0x00000002)
 379                        return 0;
 380                usleep_range(1000, 2000);
 381        }
 382        dev_err(&pt1->pdev->dev, "could not reset RAM\n");
 383        return -EIO;
 384}
 385
 386static int pt1_do_enable_ram(struct pt1 *pt1)
 387{
 388        int i, j;
 389        u32 status;
 390        status = pt1_read_reg(pt1, 0) & 0x00000004;
 391        pt1_write_reg(pt1, 0, 0x00000002);
 392        for (i = 0; i < 10; i++) {
 393                for (j = 0; j < 1024; j++) {
 394                        if ((pt1_read_reg(pt1, 0) & 0x00000004) != status)
 395                                return 0;
 396                }
 397                usleep_range(1000, 2000);
 398        }
 399        dev_err(&pt1->pdev->dev, "could not enable RAM\n");
 400        return -EIO;
 401}
 402
 403static int pt1_enable_ram(struct pt1 *pt1)
 404{
 405        int i, ret;
 406        int phase;
 407        usleep_range(1000, 2000);
 408        phase = pt1->pdev->device == 0x211a ? 128 : 166;
 409        for (i = 0; i < phase; i++) {
 410                ret = pt1_do_enable_ram(pt1);
 411                if (ret < 0)
 412                        return ret;
 413        }
 414        return 0;
 415}
 416
 417static void pt1_disable_ram(struct pt1 *pt1)
 418{
 419        pt1_write_reg(pt1, 0, 0x0b0b0000);
 420}
 421
 422static void pt1_set_stream(struct pt1 *pt1, int index, int enabled)
 423{
 424        pt1_write_reg(pt1, 2, 1 << (index + 8) | enabled << index);
 425}
 426
 427static void pt1_init_streams(struct pt1 *pt1)
 428{
 429        int i;
 430        for (i = 0; i < PT1_NR_ADAPS; i++)
 431                pt1_set_stream(pt1, i, 0);
 432}
 433
 434static int pt1_filter(struct pt1 *pt1, struct pt1_buffer_page *page)
 435{
 436        u32 upacket;
 437        int i;
 438        int index;
 439        struct pt1_adapter *adap;
 440        int offset;
 441        u8 *buf;
 442        int sc;
 443
 444        if (!page->upackets[PT1_NR_UPACKETS - 1])
 445                return 0;
 446
 447        for (i = 0; i < PT1_NR_UPACKETS; i++) {
 448                upacket = le32_to_cpu(page->upackets[i]);
 449                index = (upacket >> 29) - 1;
 450                if (index < 0 || index >=  PT1_NR_ADAPS)
 451                        continue;
 452
 453                adap = pt1->adaps[index];
 454                if (upacket >> 25 & 1)
 455                        adap->upacket_count = 0;
 456                else if (!adap->upacket_count)
 457                        continue;
 458
 459                if (upacket >> 24 & 1)
 460                        printk_ratelimited(KERN_INFO "earth-pt1: device buffer overflowing. table[%d] buf[%d]\n",
 461                                pt1->table_index, pt1->buf_index);
 462                sc = upacket >> 26 & 0x7;
 463                if (adap->st_count != -1 && sc != ((adap->st_count + 1) & 0x7))
 464                        printk_ratelimited(KERN_INFO "earth-pt1: data loss in streamID(adapter)[%d]\n",
 465                                           index);
 466                adap->st_count = sc;
 467
 468                buf = adap->buf;
 469                offset = adap->packet_count * 188 + adap->upacket_count * 3;
 470                buf[offset] = upacket >> 16;
 471                buf[offset + 1] = upacket >> 8;
 472                if (adap->upacket_count != 62)
 473                        buf[offset + 2] = upacket;
 474
 475                if (++adap->upacket_count >= 63) {
 476                        adap->upacket_count = 0;
 477                        if (++adap->packet_count >= 21) {
 478                                dvb_dmx_swfilter_packets(&adap->demux, buf, 21);
 479                                adap->packet_count = 0;
 480                        }
 481                }
 482        }
 483
 484        page->upackets[PT1_NR_UPACKETS - 1] = 0;
 485        return 1;
 486}
 487
 488static int pt1_thread(void *data)
 489{
 490        struct pt1 *pt1;
 491        struct pt1_buffer_page *page;
 492        bool was_frozen;
 493
 494#define PT1_FETCH_DELAY 10
 495#define PT1_FETCH_DELAY_DELTA 2
 496
 497        pt1 = data;
 498        set_freezable();
 499
 500        while (!kthread_freezable_should_stop(&was_frozen)) {
 501                if (was_frozen) {
 502                        int i;
 503
 504                        for (i = 0; i < PT1_NR_ADAPS; i++)
 505                                pt1_set_stream(pt1, i, !!pt1->adaps[i]->users);
 506                }
 507
 508                page = pt1->tables[pt1->table_index].bufs[pt1->buf_index].page;
 509                if (!pt1_filter(pt1, page)) {
 510                        ktime_t delay;
 511
 512                        delay = ktime_set(0, PT1_FETCH_DELAY * NSEC_PER_MSEC);
 513                        set_current_state(TASK_INTERRUPTIBLE);
 514                        schedule_hrtimeout_range(&delay,
 515                                        PT1_FETCH_DELAY_DELTA * NSEC_PER_MSEC,
 516                                        HRTIMER_MODE_REL);
 517                        continue;
 518                }
 519
 520                if (++pt1->buf_index >= PT1_NR_BUFS) {
 521                        pt1_increment_table_count(pt1);
 522                        pt1->buf_index = 0;
 523                        if (++pt1->table_index >= pt1_nr_tables)
 524                                pt1->table_index = 0;
 525                }
 526        }
 527
 528        return 0;
 529}
 530
 531static void pt1_free_page(struct pt1 *pt1, void *page, dma_addr_t addr)
 532{
 533        dma_free_coherent(&pt1->pdev->dev, PT1_PAGE_SIZE, page, addr);
 534}
 535
 536static void *pt1_alloc_page(struct pt1 *pt1, dma_addr_t *addrp, u32 *pfnp)
 537{
 538        void *page;
 539        dma_addr_t addr;
 540
 541        page = dma_alloc_coherent(&pt1->pdev->dev, PT1_PAGE_SIZE, &addr,
 542                                  GFP_KERNEL);
 543        if (page == NULL)
 544                return NULL;
 545
 546        BUG_ON(addr & (PT1_PAGE_SIZE - 1));
 547        BUG_ON(addr >> PT1_PAGE_SHIFT >> 31 >> 1);
 548
 549        *addrp = addr;
 550        *pfnp = addr >> PT1_PAGE_SHIFT;
 551        return page;
 552}
 553
 554static void pt1_cleanup_buffer(struct pt1 *pt1, struct pt1_buffer *buf)
 555{
 556        pt1_free_page(pt1, buf->page, buf->addr);
 557}
 558
 559static int
 560pt1_init_buffer(struct pt1 *pt1, struct pt1_buffer *buf,  u32 *pfnp)
 561{
 562        struct pt1_buffer_page *page;
 563        dma_addr_t addr;
 564
 565        page = pt1_alloc_page(pt1, &addr, pfnp);
 566        if (page == NULL)
 567                return -ENOMEM;
 568
 569        page->upackets[PT1_NR_UPACKETS - 1] = 0;
 570
 571        buf->page = page;
 572        buf->addr = addr;
 573        return 0;
 574}
 575
 576static void pt1_cleanup_table(struct pt1 *pt1, struct pt1_table *table)
 577{
 578        int i;
 579
 580        for (i = 0; i < PT1_NR_BUFS; i++)
 581                pt1_cleanup_buffer(pt1, &table->bufs[i]);
 582
 583        pt1_free_page(pt1, table->page, table->addr);
 584}
 585
 586static int
 587pt1_init_table(struct pt1 *pt1, struct pt1_table *table, u32 *pfnp)
 588{
 589        struct pt1_table_page *page;
 590        dma_addr_t addr;
 591        int i, ret;
 592        u32 buf_pfn;
 593
 594        page = pt1_alloc_page(pt1, &addr, pfnp);
 595        if (page == NULL)
 596                return -ENOMEM;
 597
 598        for (i = 0; i < PT1_NR_BUFS; i++) {
 599                ret = pt1_init_buffer(pt1, &table->bufs[i], &buf_pfn);
 600                if (ret < 0)
 601                        goto err;
 602
 603                page->buf_pfns[i] = cpu_to_le32(buf_pfn);
 604        }
 605
 606        pt1_increment_table_count(pt1);
 607        table->page = page;
 608        table->addr = addr;
 609        return 0;
 610
 611err:
 612        while (i--)
 613                pt1_cleanup_buffer(pt1, &table->bufs[i]);
 614
 615        pt1_free_page(pt1, page, addr);
 616        return ret;
 617}
 618
 619static void pt1_cleanup_tables(struct pt1 *pt1)
 620{
 621        struct pt1_table *tables;
 622        int i;
 623
 624        tables = pt1->tables;
 625        pt1_unregister_tables(pt1);
 626
 627        for (i = 0; i < pt1_nr_tables; i++)
 628                pt1_cleanup_table(pt1, &tables[i]);
 629
 630        vfree(tables);
 631}
 632
 633static int pt1_init_tables(struct pt1 *pt1)
 634{
 635        struct pt1_table *tables;
 636        int i, ret;
 637        u32 first_pfn, pfn;
 638
 639        if (!pt1_nr_tables)
 640                return 0;
 641
 642        tables = vmalloc(array_size(pt1_nr_tables, sizeof(struct pt1_table)));
 643        if (tables == NULL)
 644                return -ENOMEM;
 645
 646        pt1_init_table_count(pt1);
 647
 648        i = 0;
 649        ret = pt1_init_table(pt1, &tables[0], &first_pfn);
 650        if (ret)
 651                goto err;
 652        i++;
 653
 654        while (i < pt1_nr_tables) {
 655                ret = pt1_init_table(pt1, &tables[i], &pfn);
 656                if (ret)
 657                        goto err;
 658                tables[i - 1].page->next_pfn = cpu_to_le32(pfn);
 659                i++;
 660        }
 661
 662        tables[pt1_nr_tables - 1].page->next_pfn = cpu_to_le32(first_pfn);
 663
 664        pt1_register_tables(pt1, first_pfn);
 665        pt1->tables = tables;
 666        return 0;
 667
 668err:
 669        while (i--)
 670                pt1_cleanup_table(pt1, &tables[i]);
 671
 672        vfree(tables);
 673        return ret;
 674}
 675
 676static int pt1_start_polling(struct pt1 *pt1)
 677{
 678        int ret = 0;
 679
 680        mutex_lock(&pt1->lock);
 681        if (!pt1->kthread) {
 682                pt1->kthread = kthread_run(pt1_thread, pt1, "earth-pt1");
 683                if (IS_ERR(pt1->kthread)) {
 684                        ret = PTR_ERR(pt1->kthread);
 685                        pt1->kthread = NULL;
 686                }
 687        }
 688        mutex_unlock(&pt1->lock);
 689        return ret;
 690}
 691
 692static int pt1_start_feed(struct dvb_demux_feed *feed)
 693{
 694        struct pt1_adapter *adap;
 695        adap = container_of(feed->demux, struct pt1_adapter, demux);
 696        if (!adap->users++) {
 697                int ret;
 698
 699                ret = pt1_start_polling(adap->pt1);
 700                if (ret)
 701                        return ret;
 702                pt1_set_stream(adap->pt1, adap->index, 1);
 703        }
 704        return 0;
 705}
 706
 707static void pt1_stop_polling(struct pt1 *pt1)
 708{
 709        int i, count;
 710
 711        mutex_lock(&pt1->lock);
 712        for (i = 0, count = 0; i < PT1_NR_ADAPS; i++)
 713                count += pt1->adaps[i]->users;
 714
 715        if (count == 0 && pt1->kthread) {
 716                kthread_stop(pt1->kthread);
 717                pt1->kthread = NULL;
 718        }
 719        mutex_unlock(&pt1->lock);
 720}
 721
 722static int pt1_stop_feed(struct dvb_demux_feed *feed)
 723{
 724        struct pt1_adapter *adap;
 725        adap = container_of(feed->demux, struct pt1_adapter, demux);
 726        if (!--adap->users) {
 727                pt1_set_stream(adap->pt1, adap->index, 0);
 728                pt1_stop_polling(adap->pt1);
 729        }
 730        return 0;
 731}
 732
 733static void
 734pt1_update_power(struct pt1 *pt1)
 735{
 736        int bits;
 737        int i;
 738        struct pt1_adapter *adap;
 739        static const int sleep_bits[] = {
 740                1 << 4,
 741                1 << 6 | 1 << 7,
 742                1 << 5,
 743                1 << 6 | 1 << 8,
 744        };
 745
 746        bits = pt1->power | !pt1->reset << 3;
 747        mutex_lock(&pt1->lock);
 748        for (i = 0; i < PT1_NR_ADAPS; i++) {
 749                adap = pt1->adaps[i];
 750                switch (adap->voltage) {
 751                case SEC_VOLTAGE_13: /* actually 11V */
 752                        bits |= 1 << 2;
 753                        break;
 754                case SEC_VOLTAGE_18: /* actually 15V */
 755                        bits |= 1 << 1 | 1 << 2;
 756                        break;
 757                default:
 758                        break;
 759                }
 760
 761                /* XXX: The bits should be changed depending on adap->sleep. */
 762                bits |= sleep_bits[i];
 763        }
 764        pt1_write_reg(pt1, 1, bits);
 765        mutex_unlock(&pt1->lock);
 766}
 767
 768static int pt1_set_voltage(struct dvb_frontend *fe, enum fe_sec_voltage voltage)
 769{
 770        struct pt1_adapter *adap;
 771
 772        adap = container_of(fe->dvb, struct pt1_adapter, adap);
 773        adap->voltage = voltage;
 774        pt1_update_power(adap->pt1);
 775
 776        if (adap->orig_set_voltage)
 777                return adap->orig_set_voltage(fe, voltage);
 778        else
 779                return 0;
 780}
 781
 782static int pt1_sleep(struct dvb_frontend *fe)
 783{
 784        struct pt1_adapter *adap;
 785        int ret;
 786
 787        adap = container_of(fe->dvb, struct pt1_adapter, adap);
 788
 789        ret = 0;
 790        if (adap->orig_sleep)
 791                ret = adap->orig_sleep(fe);
 792
 793        adap->sleep = 1;
 794        pt1_update_power(adap->pt1);
 795        return ret;
 796}
 797
 798static int pt1_wakeup(struct dvb_frontend *fe)
 799{
 800        struct pt1_adapter *adap;
 801        int ret;
 802
 803        adap = container_of(fe->dvb, struct pt1_adapter, adap);
 804        adap->sleep = 0;
 805        pt1_update_power(adap->pt1);
 806        usleep_range(1000, 2000);
 807
 808        ret = config_demod(adap->demod_i2c_client, adap->pt1->fe_clk);
 809        if (ret == 0 && adap->orig_init)
 810                ret = adap->orig_init(fe);
 811        return ret;
 812}
 813
 814static void pt1_free_adapter(struct pt1_adapter *adap)
 815{
 816        adap->demux.dmx.close(&adap->demux.dmx);
 817        dvb_dmxdev_release(&adap->dmxdev);
 818        dvb_dmx_release(&adap->demux);
 819        dvb_unregister_adapter(&adap->adap);
 820        free_page((unsigned long)adap->buf);
 821        kfree(adap);
 822}
 823
 824DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
 825
 826static struct pt1_adapter *
 827pt1_alloc_adapter(struct pt1 *pt1)
 828{
 829        struct pt1_adapter *adap;
 830        void *buf;
 831        struct dvb_adapter *dvb_adap;
 832        struct dvb_demux *demux;
 833        struct dmxdev *dmxdev;
 834        int ret;
 835
 836        adap = kzalloc(sizeof(struct pt1_adapter), GFP_KERNEL);
 837        if (!adap) {
 838                ret = -ENOMEM;
 839                goto err;
 840        }
 841
 842        adap->pt1 = pt1;
 843
 844        adap->voltage = SEC_VOLTAGE_OFF;
 845        adap->sleep = 1;
 846
 847        buf = (u8 *)__get_free_page(GFP_KERNEL);
 848        if (!buf) {
 849                ret = -ENOMEM;
 850                goto err_kfree;
 851        }
 852
 853        adap->buf = buf;
 854        adap->upacket_count = 0;
 855        adap->packet_count = 0;
 856        adap->st_count = -1;
 857
 858        dvb_adap = &adap->adap;
 859        dvb_adap->priv = adap;
 860        ret = dvb_register_adapter(dvb_adap, DRIVER_NAME, THIS_MODULE,
 861                                   &pt1->pdev->dev, adapter_nr);
 862        if (ret < 0)
 863                goto err_free_page;
 864
 865        demux = &adap->demux;
 866        demux->dmx.capabilities = DMX_TS_FILTERING | DMX_SECTION_FILTERING;
 867        demux->priv = adap;
 868        demux->feednum = 256;
 869        demux->filternum = 256;
 870        demux->start_feed = pt1_start_feed;
 871        demux->stop_feed = pt1_stop_feed;
 872        demux->write_to_decoder = NULL;
 873        ret = dvb_dmx_init(demux);
 874        if (ret < 0)
 875                goto err_unregister_adapter;
 876
 877        dmxdev = &adap->dmxdev;
 878        dmxdev->filternum = 256;
 879        dmxdev->demux = &demux->dmx;
 880        dmxdev->capabilities = 0;
 881        ret = dvb_dmxdev_init(dmxdev, dvb_adap);
 882        if (ret < 0)
 883                goto err_dmx_release;
 884
 885        return adap;
 886
 887err_dmx_release:
 888        dvb_dmx_release(demux);
 889err_unregister_adapter:
 890        dvb_unregister_adapter(dvb_adap);
 891err_free_page:
 892        free_page((unsigned long)buf);
 893err_kfree:
 894        kfree(adap);
 895err:
 896        return ERR_PTR(ret);
 897}
 898
 899static void pt1_cleanup_adapters(struct pt1 *pt1)
 900{
 901        int i;
 902        for (i = 0; i < PT1_NR_ADAPS; i++)
 903                pt1_free_adapter(pt1->adaps[i]);
 904}
 905
 906static int pt1_init_adapters(struct pt1 *pt1)
 907{
 908        int i;
 909        struct pt1_adapter *adap;
 910        int ret;
 911
 912        for (i = 0; i < PT1_NR_ADAPS; i++) {
 913                adap = pt1_alloc_adapter(pt1);
 914                if (IS_ERR(adap)) {
 915                        ret = PTR_ERR(adap);
 916                        goto err;
 917                }
 918
 919                adap->index = i;
 920                pt1->adaps[i] = adap;
 921        }
 922        return 0;
 923
 924err:
 925        while (i--)
 926                pt1_free_adapter(pt1->adaps[i]);
 927
 928        return ret;
 929}
 930
 931static void pt1_cleanup_frontend(struct pt1_adapter *adap)
 932{
 933        dvb_unregister_frontend(adap->fe);
 934        dvb_module_release(adap->tuner_i2c_client);
 935        dvb_module_release(adap->demod_i2c_client);
 936}
 937
 938static int pt1_init_frontend(struct pt1_adapter *adap, struct dvb_frontend *fe)
 939{
 940        int ret;
 941
 942        adap->orig_set_voltage = fe->ops.set_voltage;
 943        adap->orig_sleep = fe->ops.sleep;
 944        adap->orig_init = fe->ops.init;
 945        fe->ops.set_voltage = pt1_set_voltage;
 946        fe->ops.sleep = pt1_sleep;
 947        fe->ops.init = pt1_wakeup;
 948
 949        ret = dvb_register_frontend(&adap->adap, fe);
 950        if (ret < 0)
 951                return ret;
 952
 953        adap->fe = fe;
 954        return 0;
 955}
 956
 957static void pt1_cleanup_frontends(struct pt1 *pt1)
 958{
 959        int i;
 960        for (i = 0; i < PT1_NR_ADAPS; i++)
 961                pt1_cleanup_frontend(pt1->adaps[i]);
 962}
 963
 964static int pt1_init_frontends(struct pt1 *pt1)
 965{
 966        int i;
 967        int ret;
 968
 969        for (i = 0; i < ARRAY_SIZE(pt1_configs); i++) {
 970                const struct i2c_board_info *info;
 971                struct tc90522_config dcfg;
 972                struct i2c_client *cl;
 973
 974                info = &pt1_configs[i].demod_info;
 975                dcfg = pt1_configs[i].demod_cfg;
 976                dcfg.tuner_i2c = NULL;
 977
 978                ret = -ENODEV;
 979                cl = dvb_module_probe("tc90522", info->type, &pt1->i2c_adap,
 980                                      info->addr, &dcfg);
 981                if (!cl)
 982                        goto fe_unregister;
 983                pt1->adaps[i]->demod_i2c_client = cl;
 984
 985                if (!strncmp(cl->name, TC90522_I2C_DEV_SAT,
 986                             strlen(TC90522_I2C_DEV_SAT))) {
 987                        struct qm1d1b0004_config tcfg;
 988
 989                        info = &pt1_configs[i].tuner_info;
 990                        tcfg = pt1_configs[i].tuner_cfg.qm1d1b0004;
 991                        tcfg.fe = dcfg.fe;
 992                        cl = dvb_module_probe("qm1d1b0004",
 993                                              info->type, dcfg.tuner_i2c,
 994                                              info->addr, &tcfg);
 995                } else {
 996                        struct dvb_pll_config tcfg;
 997
 998                        info = &pt1_configs[i].tuner_info;
 999                        tcfg = pt1_configs[i].tuner_cfg.tda6651;
1000                        tcfg.fe = dcfg.fe;
1001                        cl = dvb_module_probe("dvb_pll",
1002                                              info->type, dcfg.tuner_i2c,
1003                                              info->addr, &tcfg);
1004                }
1005                if (!cl)
1006                        goto demod_release;
1007                pt1->adaps[i]->tuner_i2c_client = cl;
1008
1009                ret = pt1_init_frontend(pt1->adaps[i], dcfg.fe);
1010                if (ret < 0)
1011                        goto tuner_release;
1012        }
1013
1014        ret = pt1_demod_block_init(pt1);
1015        if (ret < 0)
1016                goto fe_unregister;
1017
1018        return 0;
1019
1020tuner_release:
1021        dvb_module_release(pt1->adaps[i]->tuner_i2c_client);
1022demod_release:
1023        dvb_module_release(pt1->adaps[i]->demod_i2c_client);
1024fe_unregister:
1025        dev_warn(&pt1->pdev->dev, "failed to init FE(%d).\n", i);
1026        i--;
1027        for (; i >= 0; i--) {
1028                dvb_unregister_frontend(pt1->adaps[i]->fe);
1029                dvb_module_release(pt1->adaps[i]->tuner_i2c_client);
1030                dvb_module_release(pt1->adaps[i]->demod_i2c_client);
1031        }
1032        return ret;
1033}
1034
1035static void pt1_i2c_emit(struct pt1 *pt1, int addr, int busy, int read_enable,
1036                         int clock, int data, int next_addr)
1037{
1038        pt1_write_reg(pt1, 4, addr << 18 | busy << 13 | read_enable << 12 |
1039                      !clock << 11 | !data << 10 | next_addr);
1040}
1041
1042static void pt1_i2c_write_bit(struct pt1 *pt1, int addr, int *addrp, int data)
1043{
1044        pt1_i2c_emit(pt1, addr,     1, 0, 0, data, addr + 1);
1045        pt1_i2c_emit(pt1, addr + 1, 1, 0, 1, data, addr + 2);
1046        pt1_i2c_emit(pt1, addr + 2, 1, 0, 0, data, addr + 3);
1047        *addrp = addr + 3;
1048}
1049
1050static void pt1_i2c_read_bit(struct pt1 *pt1, int addr, int *addrp)
1051{
1052        pt1_i2c_emit(pt1, addr,     1, 0, 0, 1, addr + 1);
1053        pt1_i2c_emit(pt1, addr + 1, 1, 0, 1, 1, addr + 2);
1054        pt1_i2c_emit(pt1, addr + 2, 1, 1, 1, 1, addr + 3);
1055        pt1_i2c_emit(pt1, addr + 3, 1, 0, 0, 1, addr + 4);
1056        *addrp = addr + 4;
1057}
1058
1059static void pt1_i2c_write_byte(struct pt1 *pt1, int addr, int *addrp, int data)
1060{
1061        int i;
1062        for (i = 0; i < 8; i++)
1063                pt1_i2c_write_bit(pt1, addr, &addr, data >> (7 - i) & 1);
1064        pt1_i2c_write_bit(pt1, addr, &addr, 1);
1065        *addrp = addr;
1066}
1067
1068static void pt1_i2c_read_byte(struct pt1 *pt1, int addr, int *addrp, int last)
1069{
1070        int i;
1071        for (i = 0; i < 8; i++)
1072                pt1_i2c_read_bit(pt1, addr, &addr);
1073        pt1_i2c_write_bit(pt1, addr, &addr, last);
1074        *addrp = addr;
1075}
1076
1077static void pt1_i2c_prepare(struct pt1 *pt1, int addr, int *addrp)
1078{
1079        pt1_i2c_emit(pt1, addr,     1, 0, 1, 1, addr + 1);
1080        pt1_i2c_emit(pt1, addr + 1, 1, 0, 1, 0, addr + 2);
1081        pt1_i2c_emit(pt1, addr + 2, 1, 0, 0, 0, addr + 3);
1082        *addrp = addr + 3;
1083}
1084
1085static void
1086pt1_i2c_write_msg(struct pt1 *pt1, int addr, int *addrp, struct i2c_msg *msg)
1087{
1088        int i;
1089        pt1_i2c_prepare(pt1, addr, &addr);
1090        pt1_i2c_write_byte(pt1, addr, &addr, msg->addr << 1);
1091        for (i = 0; i < msg->len; i++)
1092                pt1_i2c_write_byte(pt1, addr, &addr, msg->buf[i]);
1093        *addrp = addr;
1094}
1095
1096static void
1097pt1_i2c_read_msg(struct pt1 *pt1, int addr, int *addrp, struct i2c_msg *msg)
1098{
1099        int i;
1100        pt1_i2c_prepare(pt1, addr, &addr);
1101        pt1_i2c_write_byte(pt1, addr, &addr, msg->addr << 1 | 1);
1102        for (i = 0; i < msg->len; i++)
1103                pt1_i2c_read_byte(pt1, addr, &addr, i == msg->len - 1);
1104        *addrp = addr;
1105}
1106
1107static int pt1_i2c_end(struct pt1 *pt1, int addr)
1108{
1109        pt1_i2c_emit(pt1, addr,     1, 0, 0, 0, addr + 1);
1110        pt1_i2c_emit(pt1, addr + 1, 1, 0, 1, 0, addr + 2);
1111        pt1_i2c_emit(pt1, addr + 2, 1, 0, 1, 1, 0);
1112
1113        pt1_write_reg(pt1, 0, 0x00000004);
1114        do {
1115                if (signal_pending(current))
1116                        return -EINTR;
1117                usleep_range(1000, 2000);
1118        } while (pt1_read_reg(pt1, 0) & 0x00000080);
1119        return 0;
1120}
1121
1122static void pt1_i2c_begin(struct pt1 *pt1, int *addrp)
1123{
1124        int addr = 0;
1125
1126        pt1_i2c_emit(pt1, addr,     0, 0, 1, 1, addr /* itself */);
1127        addr = addr + 1;
1128
1129        if (!pt1->i2c_running) {
1130                pt1_i2c_emit(pt1, addr,     1, 0, 1, 1, addr + 1);
1131                pt1_i2c_emit(pt1, addr + 1, 1, 0, 1, 0, addr + 2);
1132                addr = addr + 2;
1133                pt1->i2c_running = 1;
1134        }
1135        *addrp = addr;
1136}
1137
1138static int pt1_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num)
1139{
1140        struct pt1 *pt1;
1141        int i;
1142        struct i2c_msg *msg, *next_msg;
1143        int addr, ret;
1144        u16 len;
1145        u32 word;
1146
1147        pt1 = i2c_get_adapdata(adap);
1148
1149        for (i = 0; i < num; i++) {
1150                msg = &msgs[i];
1151                if (msg->flags & I2C_M_RD)
1152                        return -ENOTSUPP;
1153
1154                if (i + 1 < num)
1155                        next_msg = &msgs[i + 1];
1156                else
1157                        next_msg = NULL;
1158
1159                if (next_msg && next_msg->flags & I2C_M_RD) {
1160                        i++;
1161
1162                        len = next_msg->len;
1163                        if (len > 4)
1164                                return -ENOTSUPP;
1165
1166                        pt1_i2c_begin(pt1, &addr);
1167                        pt1_i2c_write_msg(pt1, addr, &addr, msg);
1168                        pt1_i2c_read_msg(pt1, addr, &addr, next_msg);
1169                        ret = pt1_i2c_end(pt1, addr);
1170                        if (ret < 0)
1171                                return ret;
1172
1173                        word = pt1_read_reg(pt1, 2);
1174                        while (len--) {
1175                                next_msg->buf[len] = word;
1176                                word >>= 8;
1177                        }
1178                } else {
1179                        pt1_i2c_begin(pt1, &addr);
1180                        pt1_i2c_write_msg(pt1, addr, &addr, msg);
1181                        ret = pt1_i2c_end(pt1, addr);
1182                        if (ret < 0)
1183                                return ret;
1184                }
1185        }
1186
1187        return num;
1188}
1189
1190static u32 pt1_i2c_func(struct i2c_adapter *adap)
1191{
1192        return I2C_FUNC_I2C;
1193}
1194
1195static const struct i2c_algorithm pt1_i2c_algo = {
1196        .master_xfer = pt1_i2c_xfer,
1197        .functionality = pt1_i2c_func,
1198};
1199
1200static void pt1_i2c_wait(struct pt1 *pt1)
1201{
1202        int i;
1203        for (i = 0; i < 128; i++)
1204                pt1_i2c_emit(pt1, 0, 0, 0, 1, 1, 0);
1205}
1206
1207static void pt1_i2c_init(struct pt1 *pt1)
1208{
1209        int i;
1210        for (i = 0; i < 1024; i++)
1211                pt1_i2c_emit(pt1, i, 0, 0, 1, 1, 0);
1212}
1213
1214#ifdef CONFIG_PM_SLEEP
1215
1216static int pt1_suspend(struct device *dev)
1217{
1218        struct pt1 *pt1 = dev_get_drvdata(dev);
1219
1220        pt1_init_streams(pt1);
1221        pt1_disable_ram(pt1);
1222        pt1->power = 0;
1223        pt1->reset = 1;
1224        pt1_update_power(pt1);
1225        return 0;
1226}
1227
1228static int pt1_resume(struct device *dev)
1229{
1230        struct pt1 *pt1 = dev_get_drvdata(dev);
1231        int ret;
1232        int i;
1233
1234        pt1->power = 0;
1235        pt1->reset = 1;
1236        pt1_update_power(pt1);
1237
1238        pt1_i2c_init(pt1);
1239        pt1_i2c_wait(pt1);
1240
1241        ret = pt1_sync(pt1);
1242        if (ret < 0)
1243                goto resume_err;
1244
1245        pt1_identify(pt1);
1246
1247        ret = pt1_unlock(pt1);
1248        if (ret < 0)
1249                goto resume_err;
1250
1251        ret = pt1_reset_pci(pt1);
1252        if (ret < 0)
1253                goto resume_err;
1254
1255        ret = pt1_reset_ram(pt1);
1256        if (ret < 0)
1257                goto resume_err;
1258
1259        ret = pt1_enable_ram(pt1);
1260        if (ret < 0)
1261                goto resume_err;
1262
1263        pt1_init_streams(pt1);
1264
1265        pt1->power = 1;
1266        pt1_update_power(pt1);
1267        msleep(20);
1268
1269        pt1->reset = 0;
1270        pt1_update_power(pt1);
1271        usleep_range(1000, 2000);
1272
1273        ret = pt1_demod_block_init(pt1);
1274        if (ret < 0)
1275                goto resume_err;
1276
1277        for (i = 0; i < PT1_NR_ADAPS; i++)
1278                dvb_frontend_reinitialise(pt1->adaps[i]->fe);
1279
1280        pt1_init_table_count(pt1);
1281        for (i = 0; i < pt1_nr_tables; i++) {
1282                int j;
1283
1284                for (j = 0; j < PT1_NR_BUFS; j++)
1285                        pt1->tables[i].bufs[j].page->upackets[PT1_NR_UPACKETS-1]
1286                                = 0;
1287                pt1_increment_table_count(pt1);
1288        }
1289        pt1_register_tables(pt1, pt1->tables[0].addr >> PT1_PAGE_SHIFT);
1290
1291        pt1->table_index = 0;
1292        pt1->buf_index = 0;
1293        for (i = 0; i < PT1_NR_ADAPS; i++) {
1294                pt1->adaps[i]->upacket_count = 0;
1295                pt1->adaps[i]->packet_count = 0;
1296                pt1->adaps[i]->st_count = -1;
1297        }
1298
1299        return 0;
1300
1301resume_err:
1302        dev_info(&pt1->pdev->dev, "failed to resume PT1/PT2.");
1303        return 0;       /* resume anyway */
1304}
1305
1306#endif /* CONFIG_PM_SLEEP */
1307
1308static void pt1_remove(struct pci_dev *pdev)
1309{
1310        struct pt1 *pt1;
1311        void __iomem *regs;
1312
1313        pt1 = pci_get_drvdata(pdev);
1314        regs = pt1->regs;
1315
1316        if (pt1->kthread)
1317                kthread_stop(pt1->kthread);
1318        pt1_cleanup_tables(pt1);
1319        pt1_cleanup_frontends(pt1);
1320        pt1_disable_ram(pt1);
1321        pt1->power = 0;
1322        pt1->reset = 1;
1323        pt1_update_power(pt1);
1324        pt1_cleanup_adapters(pt1);
1325        i2c_del_adapter(&pt1->i2c_adap);
1326        kfree(pt1);
1327        pci_iounmap(pdev, regs);
1328        pci_release_regions(pdev);
1329        pci_disable_device(pdev);
1330}
1331
1332static int pt1_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1333{
1334        int ret;
1335        void __iomem *regs;
1336        struct pt1 *pt1;
1337        struct i2c_adapter *i2c_adap;
1338
1339        ret = pci_enable_device(pdev);
1340        if (ret < 0)
1341                goto err;
1342
1343        ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
1344        if (ret < 0)
1345                goto err_pci_disable_device;
1346
1347        pci_set_master(pdev);
1348
1349        ret = pci_request_regions(pdev, DRIVER_NAME);
1350        if (ret < 0)
1351                goto err_pci_disable_device;
1352
1353        regs = pci_iomap(pdev, 0, 0);
1354        if (!regs) {
1355                ret = -EIO;
1356                goto err_pci_release_regions;
1357        }
1358
1359        pt1 = kzalloc(sizeof(struct pt1), GFP_KERNEL);
1360        if (!pt1) {
1361                ret = -ENOMEM;
1362                goto err_pci_iounmap;
1363        }
1364
1365        mutex_init(&pt1->lock);
1366        pt1->pdev = pdev;
1367        pt1->regs = regs;
1368        pt1->fe_clk = (pdev->device == 0x211a) ?
1369                                PT1_FE_CLK_20MHZ : PT1_FE_CLK_25MHZ;
1370        pci_set_drvdata(pdev, pt1);
1371
1372        ret = pt1_init_adapters(pt1);
1373        if (ret < 0)
1374                goto err_kfree;
1375
1376        mutex_init(&pt1->lock);
1377
1378        pt1->power = 0;
1379        pt1->reset = 1;
1380        pt1_update_power(pt1);
1381
1382        i2c_adap = &pt1->i2c_adap;
1383        i2c_adap->algo = &pt1_i2c_algo;
1384        i2c_adap->algo_data = NULL;
1385        i2c_adap->dev.parent = &pdev->dev;
1386        strscpy(i2c_adap->name, DRIVER_NAME, sizeof(i2c_adap->name));
1387        i2c_set_adapdata(i2c_adap, pt1);
1388        ret = i2c_add_adapter(i2c_adap);
1389        if (ret < 0)
1390                goto err_pt1_cleanup_adapters;
1391
1392        pt1_i2c_init(pt1);
1393        pt1_i2c_wait(pt1);
1394
1395        ret = pt1_sync(pt1);
1396        if (ret < 0)
1397                goto err_i2c_del_adapter;
1398
1399        pt1_identify(pt1);
1400
1401        ret = pt1_unlock(pt1);
1402        if (ret < 0)
1403                goto err_i2c_del_adapter;
1404
1405        ret = pt1_reset_pci(pt1);
1406        if (ret < 0)
1407                goto err_i2c_del_adapter;
1408
1409        ret = pt1_reset_ram(pt1);
1410        if (ret < 0)
1411                goto err_i2c_del_adapter;
1412
1413        ret = pt1_enable_ram(pt1);
1414        if (ret < 0)
1415                goto err_i2c_del_adapter;
1416
1417        pt1_init_streams(pt1);
1418
1419        pt1->power = 1;
1420        pt1_update_power(pt1);
1421        msleep(20);
1422
1423        pt1->reset = 0;
1424        pt1_update_power(pt1);
1425        usleep_range(1000, 2000);
1426
1427        ret = pt1_init_frontends(pt1);
1428        if (ret < 0)
1429                goto err_pt1_disable_ram;
1430
1431        ret = pt1_init_tables(pt1);
1432        if (ret < 0)
1433                goto err_pt1_cleanup_frontends;
1434
1435        return 0;
1436
1437err_pt1_cleanup_frontends:
1438        pt1_cleanup_frontends(pt1);
1439err_pt1_disable_ram:
1440        pt1_disable_ram(pt1);
1441        pt1->power = 0;
1442        pt1->reset = 1;
1443        pt1_update_power(pt1);
1444err_i2c_del_adapter:
1445        i2c_del_adapter(i2c_adap);
1446err_pt1_cleanup_adapters:
1447        pt1_cleanup_adapters(pt1);
1448err_kfree:
1449        kfree(pt1);
1450err_pci_iounmap:
1451        pci_iounmap(pdev, regs);
1452err_pci_release_regions:
1453        pci_release_regions(pdev);
1454err_pci_disable_device:
1455        pci_disable_device(pdev);
1456err:
1457        return ret;
1458
1459}
1460
1461static const struct pci_device_id pt1_id_table[] = {
1462        { PCI_DEVICE(0x10ee, 0x211a) },
1463        { PCI_DEVICE(0x10ee, 0x222a) },
1464        { },
1465};
1466MODULE_DEVICE_TABLE(pci, pt1_id_table);
1467
1468static SIMPLE_DEV_PM_OPS(pt1_pm_ops, pt1_suspend, pt1_resume);
1469
1470static struct pci_driver pt1_driver = {
1471        .name           = DRIVER_NAME,
1472        .probe          = pt1_probe,
1473        .remove         = pt1_remove,
1474        .id_table       = pt1_id_table,
1475        .driver.pm      = &pt1_pm_ops,
1476};
1477
1478module_pci_driver(pt1_driver);
1479
1480MODULE_AUTHOR("Takahito HIRANO <hiranotaka@zng.info>");
1481MODULE_DESCRIPTION("Earthsoft PT1/PT2 Driver");
1482MODULE_LICENSE("GPL");
1483