| // SPDX-License-Identifier: GPL-2.0 |
| // xc2028 |
| // |
| // Copyright (c) 2007-2008 Mauro Carvalho Chehab <mchehab@kernel.org> |
| // |
| // Copyright (c) 2007 Michel Ludwig (michel.ludwig@gmail.com) |
| // - frontend interface |
| |
| #include <linux/i2c.h> |
| #include <asm/div64.h> |
| #include <linux/firmware.h> |
| #include <linux/videodev2.h> |
| #include <linux/delay.h> |
| #include <media/tuner.h> |
| #include <linux/mutex.h> |
| #include <linux/slab.h> |
| #include <asm/unaligned.h> |
| #include "tuner-i2c.h" |
| #include "xc2028.h" |
| #include "xc2028-types.h" |
| |
| #include <linux/dvb/frontend.h> |
| #include <media/dvb_frontend.h> |
| |
| /* Max transfer size done by I2C transfer functions */ |
| #define MAX_XFER_SIZE 80 |
| |
| /* Registers (Write-only) */ |
| #define XREG_INIT 0x00 |
| #define XREG_RF_FREQ 0x02 |
| #define XREG_POWER_DOWN 0x08 |
| |
| /* Registers (Read-only) */ |
| #define XREG_FREQ_ERROR 0x01 |
| #define XREG_LOCK 0x02 |
| #define XREG_VERSION 0x04 |
| #define XREG_PRODUCT_ID 0x08 |
| #define XREG_HSYNC_FREQ 0x10 |
| #define XREG_FRAME_LINES 0x20 |
| #define XREG_SNR 0x40 |
| |
| #define XREG_ADC_ENV 0x0100 |
| |
| static int debug; |
| module_param(debug, int, 0644); |
| MODULE_PARM_DESC(debug, "enable verbose debug messages"); |
| |
| static int no_poweroff; |
| module_param(no_poweroff, int, 0644); |
| MODULE_PARM_DESC(no_poweroff, "0 (default) powers device off when not used.\n" |
| "1 keep device energized and with tuner ready all the times.\n" |
| " Faster, but consumes more power and keeps the device hotter\n"); |
| |
| static char audio_std[8]; |
| module_param_string(audio_std, audio_std, sizeof(audio_std), 0); |
| MODULE_PARM_DESC(audio_std, |
| "Audio standard. XC3028 audio decoder explicitly needs to know what audio\n" |
| "standard is needed for some video standards with audio A2 or NICAM.\n" |
| "The valid values are:\n" |
| "A2\n" |
| "A2/A\n" |
| "A2/B\n" |
| "NICAM\n" |
| "NICAM/A\n" |
| "NICAM/B\n"); |
| |
| static char firmware_name[30]; |
| module_param_string(firmware_name, firmware_name, sizeof(firmware_name), 0); |
| MODULE_PARM_DESC(firmware_name, |
| "Firmware file name. Allows overriding the default firmware name\n"); |
| |
| static LIST_HEAD(hybrid_tuner_instance_list); |
| static DEFINE_MUTEX(xc2028_list_mutex); |
| |
| /* struct for storing firmware table */ |
| struct firmware_description { |
| unsigned int type; |
| v4l2_std_id id; |
| __u16 int_freq; |
| unsigned char *ptr; |
| unsigned int size; |
| }; |
| |
| struct firmware_properties { |
| unsigned int type; |
| v4l2_std_id id; |
| v4l2_std_id std_req; |
| __u16 int_freq; |
| unsigned int scode_table; |
| int scode_nr; |
| }; |
| |
| enum xc2028_state { |
| XC2028_NO_FIRMWARE = 0, |
| XC2028_WAITING_FIRMWARE, |
| XC2028_ACTIVE, |
| XC2028_SLEEP, |
| XC2028_NODEV, |
| }; |
| |
| struct xc2028_data { |
| struct list_head hybrid_tuner_instance_list; |
| struct tuner_i2c_props i2c_props; |
| __u32 frequency; |
| |
| enum xc2028_state state; |
| const char *fname; |
| |
| struct firmware_description *firm; |
| int firm_size; |
| __u16 firm_version; |
| |
| __u16 hwmodel; |
| __u16 hwvers; |
| |
| struct xc2028_ctrl ctrl; |
| |
| struct firmware_properties cur_fw; |
| |
| struct mutex lock; |
| }; |
| |
| #define i2c_send(priv, buf, size) ({ \ |
| int _rc; \ |
| _rc = tuner_i2c_xfer_send(&priv->i2c_props, buf, size); \ |
| if (size != _rc) \ |
| tuner_info("i2c output error: rc = %d (should be %d)\n",\ |
| _rc, (int)size); \ |
| if (priv->ctrl.msleep) \ |
| msleep(priv->ctrl.msleep); \ |
| _rc; \ |
| }) |
| |
| #define i2c_send_recv(priv, obuf, osize, ibuf, isize) ({ \ |
| int _rc; \ |
| _rc = tuner_i2c_xfer_send_recv(&priv->i2c_props, obuf, osize, \ |
| ibuf, isize); \ |
| if (isize != _rc) \ |
| tuner_err("i2c input error: rc = %d (should be %d)\n", \ |
| _rc, (int)isize); \ |
| if (priv->ctrl.msleep) \ |
| msleep(priv->ctrl.msleep); \ |
| _rc; \ |
| }) |
| |
| #define send_seq(priv, data...) ({ \ |
| static u8 _val[] = data; \ |
| int _rc; \ |
| if (sizeof(_val) != \ |
| (_rc = tuner_i2c_xfer_send(&priv->i2c_props, \ |
| _val, sizeof(_val)))) { \ |
| tuner_err("Error on line %d: %d\n", __LINE__, _rc); \ |
| } else if (priv->ctrl.msleep) \ |
| msleep(priv->ctrl.msleep); \ |
| _rc; \ |
| }) |
| |
| static int xc2028_get_reg(struct xc2028_data *priv, u16 reg, u16 *val) |
| { |
| unsigned char buf[2]; |
| unsigned char ibuf[2]; |
| |
| tuner_dbg("%s %04x called\n", __func__, reg); |
| |
| buf[0] = reg >> 8; |
| buf[1] = (unsigned char) reg; |
| |
| if (i2c_send_recv(priv, buf, 2, ibuf, 2) != 2) |
| return -EIO; |
| |
| *val = (ibuf[1]) | (ibuf[0] << 8); |
| return 0; |
| } |
| |
| #define dump_firm_type(t) dump_firm_type_and_int_freq(t, 0) |
| static void dump_firm_type_and_int_freq(unsigned int type, u16 int_freq) |
| { |
| if (type & BASE) |
| printk(KERN_CONT "BASE "); |
| if (type & INIT1) |
| printk(KERN_CONT "INIT1 "); |
| if (type & F8MHZ) |
| printk(KERN_CONT "F8MHZ "); |
| if (type & MTS) |
| printk(KERN_CONT "MTS "); |
| if (type & D2620) |
| printk(KERN_CONT "D2620 "); |
| if (type & D2633) |
| printk(KERN_CONT "D2633 "); |
| if (type & DTV6) |
| printk(KERN_CONT "DTV6 "); |
| if (type & QAM) |
| printk(KERN_CONT "QAM "); |
| if (type & DTV7) |
| printk(KERN_CONT "DTV7 "); |
| if (type & DTV78) |
| printk(KERN_CONT "DTV78 "); |
| if (type & DTV8) |
| printk(KERN_CONT "DTV8 "); |
| if (type & FM) |
| printk(KERN_CONT "FM "); |
| if (type & INPUT1) |
| printk(KERN_CONT "INPUT1 "); |
| if (type & LCD) |
| printk(KERN_CONT "LCD "); |
| if (type & NOGD) |
| printk(KERN_CONT "NOGD "); |
| if (type & MONO) |
| printk(KERN_CONT "MONO "); |
| if (type & ATSC) |
| printk(KERN_CONT "ATSC "); |
| if (type & IF) |
| printk(KERN_CONT "IF "); |
| if (type & LG60) |
| printk(KERN_CONT "LG60 "); |
| if (type & ATI638) |
| printk(KERN_CONT "ATI638 "); |
| if (type & OREN538) |
| printk(KERN_CONT "OREN538 "); |
| if (type & OREN36) |
| printk(KERN_CONT "OREN36 "); |
| if (type & TOYOTA388) |
| printk(KERN_CONT "TOYOTA388 "); |
| if (type & TOYOTA794) |
| printk(KERN_CONT "TOYOTA794 "); |
| if (type & DIBCOM52) |
| printk(KERN_CONT "DIBCOM52 "); |
| if (type & ZARLINK456) |
| printk(KERN_CONT "ZARLINK456 "); |
| if (type & CHINA) |
| printk(KERN_CONT "CHINA "); |
| if (type & F6MHZ) |
| printk(KERN_CONT "F6MHZ "); |
| if (type & INPUT2) |
| printk(KERN_CONT "INPUT2 "); |
| if (type & SCODE) |
| printk(KERN_CONT "SCODE "); |
| if (type & HAS_IF) |
| printk(KERN_CONT "HAS_IF_%d ", int_freq); |
| } |
| |
| static v4l2_std_id parse_audio_std_option(void) |
| { |
| if (strcasecmp(audio_std, "A2") == 0) |
| return V4L2_STD_A2; |
| if (strcasecmp(audio_std, "A2/A") == 0) |
| return V4L2_STD_A2_A; |
| if (strcasecmp(audio_std, "A2/B") == 0) |
| return V4L2_STD_A2_B; |
| if (strcasecmp(audio_std, "NICAM") == 0) |
| return V4L2_STD_NICAM; |
| if (strcasecmp(audio_std, "NICAM/A") == 0) |
| return V4L2_STD_NICAM_A; |
| if (strcasecmp(audio_std, "NICAM/B") == 0) |
| return V4L2_STD_NICAM_B; |
| |
| return 0; |
| } |
| |
| static int check_device_status(struct xc2028_data *priv) |
| { |
| switch (priv->state) { |
| case XC2028_NO_FIRMWARE: |
| case XC2028_WAITING_FIRMWARE: |
| return -EAGAIN; |
| case XC2028_ACTIVE: |
| return 1; |
| case XC2028_SLEEP: |
| return 0; |
| case XC2028_NODEV: |
| return -ENODEV; |
| } |
| return 0; |
| } |
| |
| static void free_firmware(struct xc2028_data *priv) |
| { |
| int i; |
| tuner_dbg("%s called\n", __func__); |
| |
| /* free allocated f/w string */ |
| if (priv->fname != firmware_name) |
| kfree(priv->fname); |
| priv->fname = NULL; |
| |
| priv->state = XC2028_NO_FIRMWARE; |
| memset(&priv->cur_fw, 0, sizeof(priv->cur_fw)); |
| |
| if (!priv->firm) |
| return; |
| |
| for (i = 0; i < priv->firm_size; i++) |
| kfree(priv->firm[i].ptr); |
| |
| kfree(priv->firm); |
| |
| priv->firm = NULL; |
| priv->firm_size = 0; |
| } |
| |
| static int load_all_firmwares(struct dvb_frontend *fe, |
| const struct firmware *fw) |
| { |
| struct xc2028_data *priv = fe->tuner_priv; |
| const unsigned char *p, *endp; |
| int rc = 0; |
| int n, n_array; |
| char name[33]; |
| |
| tuner_dbg("%s called\n", __func__); |
| |
| p = fw->data; |
| endp = p + fw->size; |
| |
| if (fw->size < sizeof(name) - 1 + 2 + 2) { |
| tuner_err("Error: firmware file %s has invalid size!\n", |
| priv->fname); |
| goto corrupt; |
| } |
| |
| memcpy(name, p, sizeof(name) - 1); |
| name[sizeof(name) - 1] = 0; |
| p += sizeof(name) - 1; |
| |
| priv->firm_version = get_unaligned_le16(p); |
| p += 2; |
| |
| n_array = get_unaligned_le16(p); |
| p += 2; |
| |
| tuner_info("Loading %d firmware images from %s, type: %s, ver %d.%d\n", |
| n_array, priv->fname, name, |
| priv->firm_version >> 8, priv->firm_version & 0xff); |
| |
| priv->firm = kcalloc(n_array, sizeof(*priv->firm), GFP_KERNEL); |
| if (priv->firm == NULL) { |
| tuner_err("Not enough memory to load firmware file.\n"); |
| rc = -ENOMEM; |
| goto err; |
| } |
| priv->firm_size = n_array; |
| |
| n = -1; |
| while (p < endp) { |
| __u32 type, size; |
| v4l2_std_id id; |
| __u16 int_freq = 0; |
| |
| n++; |
| if (n >= n_array) { |
| tuner_err("More firmware images in file than were expected!\n"); |
| goto corrupt; |
| } |
| |
| /* Checks if there's enough bytes to read */ |
| if (endp - p < sizeof(type) + sizeof(id) + sizeof(size)) |
| goto header; |
| |
| type = get_unaligned_le32(p); |
| p += sizeof(type); |
| |
| id = get_unaligned_le64(p); |
| p += sizeof(id); |
| |
| if (type & HAS_IF) { |
| int_freq = get_unaligned_le16(p); |
| p += sizeof(int_freq); |
| if (endp - p < sizeof(size)) |
| goto header; |
| } |
| |
| size = get_unaligned_le32(p); |
| p += sizeof(size); |
| |
| if (!size || size > endp - p) { |
| tuner_err("Firmware type "); |
| dump_firm_type(type); |
| printk(KERN_CONT |
| "(%x), id %llx is corrupted (size=%zd, expected %d)\n", |
| type, (unsigned long long)id, (endp - p), size); |
| goto corrupt; |
| } |
| |
| priv->firm[n].ptr = kmemdup(p, size, GFP_KERNEL); |
| if (priv->firm[n].ptr == NULL) { |
| tuner_err("Not enough memory to load firmware file.\n"); |
| rc = -ENOMEM; |
| goto err; |
| } |
| tuner_dbg("Reading firmware type "); |
| if (debug) { |
| dump_firm_type_and_int_freq(type, int_freq); |
| printk(KERN_CONT "(%x), id %llx, size=%d.\n", |
| type, (unsigned long long)id, size); |
| } |
| |
| priv->firm[n].type = type; |
| priv->firm[n].id = id; |
| priv->firm[n].size = size; |
| priv->firm[n].int_freq = int_freq; |
| |
| p += size; |
| } |
| |
| if (n + 1 != priv->firm_size) { |
| tuner_err("Firmware file is incomplete!\n"); |
| goto corrupt; |
| } |
| |
| goto done; |
| |
| header: |
| tuner_err("Firmware header is incomplete!\n"); |
| corrupt: |
| rc = -EINVAL; |
| tuner_err("Error: firmware file is corrupted!\n"); |
| |
| err: |
| tuner_info("Releasing partially loaded firmware file.\n"); |
| free_firmware(priv); |
| |
| done: |
| if (rc == 0) |
| tuner_dbg("Firmware files loaded.\n"); |
| else |
| priv->state = XC2028_NODEV; |
| |
| return rc; |
| } |
| |
| static int seek_firmware(struct dvb_frontend *fe, unsigned int type, |
| v4l2_std_id *id) |
| { |
| struct xc2028_data *priv = fe->tuner_priv; |
| int i, best_i = -1, best_nr_matches = 0; |
| unsigned int type_mask = 0; |
| |
| tuner_dbg("%s called, want type=", __func__); |
| if (debug) { |
| dump_firm_type(type); |
| printk(KERN_CONT "(%x), id %016llx.\n", |
| type, (unsigned long long)*id); |
| } |
| |
| if (!priv->firm) { |
| tuner_err("Error! firmware not loaded\n"); |
| return -EINVAL; |
| } |
| |
| if (((type & ~SCODE) == 0) && (*id == 0)) |
| *id = V4L2_STD_PAL; |
| |
| if (type & BASE) |
| type_mask = BASE_TYPES; |
| else if (type & SCODE) { |
| type &= SCODE_TYPES; |
| type_mask = SCODE_TYPES & ~HAS_IF; |
| } else if (type & DTV_TYPES) |
| type_mask = DTV_TYPES; |
| else if (type & STD_SPECIFIC_TYPES) |
| type_mask = STD_SPECIFIC_TYPES; |
| |
| type &= type_mask; |
| |
| if (!(type & SCODE)) |
| type_mask = ~0; |
| |
| /* Seek for exact match */ |
| for (i = 0; i < priv->firm_size; i++) { |
| if ((type == (priv->firm[i].type & type_mask)) && |
| (*id == priv->firm[i].id)) |
| goto found; |
| } |
| |
| /* Seek for generic video standard match */ |
| for (i = 0; i < priv->firm_size; i++) { |
| v4l2_std_id match_mask; |
| int nr_matches; |
| |
| if (type != (priv->firm[i].type & type_mask)) |
| continue; |
| |
| match_mask = *id & priv->firm[i].id; |
| if (!match_mask) |
| continue; |
| |
| if ((*id & match_mask) == *id) |
| goto found; /* Supports all the requested standards */ |
| |
| nr_matches = hweight64(match_mask); |
| if (nr_matches > best_nr_matches) { |
| best_nr_matches = nr_matches; |
| best_i = i; |
| } |
| } |
| |
| if (best_nr_matches > 0) { |
| tuner_dbg("Selecting best matching firmware (%d bits) for type=", |
| best_nr_matches); |
| dump_firm_type(type); |
| printk(KERN_CONT |
| "(%x), id %016llx:\n", type, (unsigned long long)*id); |
| i = best_i; |
| goto found; |
| } |
| |
| /*FIXME: Would make sense to seek for type "hint" match ? */ |
| |
| i = -ENOENT; |
| goto ret; |
| |
| found: |
| *id = priv->firm[i].id; |
| |
| ret: |
| tuner_dbg("%s firmware for type=", (i < 0) ? "Can't find" : "Found"); |
| if (debug) { |
| dump_firm_type(type); |
| printk(KERN_CONT "(%x), id %016llx.\n", |
| type, (unsigned long long)*id); |
| } |
| return i; |
| } |
| |
| static inline int do_tuner_callback(struct dvb_frontend *fe, int cmd, int arg) |
| { |
| struct xc2028_data *priv = fe->tuner_priv; |
| |
| /* analog side (tuner-core) uses i2c_adap->algo_data. |
| * digital side is not guaranteed to have algo_data defined. |
| * |
| * digital side will always have fe->dvb defined. |
| * analog side (tuner-core) doesn't (yet) define fe->dvb. |
| */ |
| |
| return (!fe->callback) ? -EINVAL : |
| fe->callback(((fe->dvb) && (fe->dvb->priv)) ? |
| fe->dvb->priv : priv->i2c_props.adap->algo_data, |
| DVB_FRONTEND_COMPONENT_TUNER, cmd, arg); |
| } |
| |
| static int load_firmware(struct dvb_frontend *fe, unsigned int type, |
| v4l2_std_id *id) |
| { |
| struct xc2028_data *priv = fe->tuner_priv; |
| int pos, rc; |
| unsigned char *p, *endp, buf[MAX_XFER_SIZE]; |
| |
| if (priv->ctrl.max_len > sizeof(buf)) |
| priv->ctrl.max_len = sizeof(buf); |
| |
| tuner_dbg("%s called\n", __func__); |
| |
| pos = seek_firmware(fe, type, id); |
| if (pos < 0) |
| return pos; |
| |
| tuner_info("Loading firmware for type="); |
| dump_firm_type(priv->firm[pos].type); |
| printk(KERN_CONT "(%x), id %016llx.\n", |
| priv->firm[pos].type, (unsigned long long)*id); |
| |
| p = priv->firm[pos].ptr; |
| endp = p + priv->firm[pos].size; |
| |
| while (p < endp) { |
| __u16 size; |
| |
| /* Checks if there's enough bytes to read */ |
| if (p + sizeof(size) > endp) { |
| tuner_err("Firmware chunk size is wrong\n"); |
| return -EINVAL; |
| } |
| |
| size = le16_to_cpu(*(__le16 *) p); |
| p += sizeof(size); |
| |
| if (size == 0xffff) |
| return 0; |
| |
| if (!size) { |
| /* Special callback command received */ |
| rc = do_tuner_callback(fe, XC2028_TUNER_RESET, 0); |
| if (rc < 0) { |
| tuner_err("Error at RESET code %d\n", |
| (*p) & 0x7f); |
| return -EINVAL; |
| } |
| continue; |
| } |
| if (size >= 0xff00) { |
| switch (size) { |
| case 0xff00: |
| rc = do_tuner_callback(fe, XC2028_RESET_CLK, 0); |
| if (rc < 0) { |
| tuner_err("Error at RESET code %d\n", |
| (*p) & 0x7f); |
| return -EINVAL; |
| } |
| break; |
| default: |
| tuner_info("Invalid RESET code %d\n", |
| size & 0x7f); |
| return -EINVAL; |
| |
| } |
| continue; |
| } |
| |
| /* Checks for a sleep command */ |
| if (size & 0x8000) { |
| msleep(size & 0x7fff); |
| continue; |
| } |
| |
| if ((size + p > endp)) { |
| tuner_err("missing bytes: need %d, have %zd\n", |
| size, (endp - p)); |
| return -EINVAL; |
| } |
| |
| buf[0] = *p; |
| p++; |
| size--; |
| |
| /* Sends message chunks */ |
| while (size > 0) { |
| int len = (size < priv->ctrl.max_len - 1) ? |
| size : priv->ctrl.max_len - 1; |
| |
| memcpy(buf + 1, p, len); |
| |
| rc = i2c_send(priv, buf, len + 1); |
| if (rc < 0) { |
| tuner_err("%d returned from send\n", rc); |
| return -EINVAL; |
| } |
| |
| p += len; |
| size -= len; |
| } |
| |
| /* silently fail if the frontend doesn't support I2C flush */ |
| rc = do_tuner_callback(fe, XC2028_I2C_FLUSH, 0); |
| if ((rc < 0) && (rc != -EINVAL)) { |
| tuner_err("error executing flush: %d\n", rc); |
| return rc; |
| } |
| } |
| return 0; |
| } |
| |
| static int load_scode(struct dvb_frontend *fe, unsigned int type, |
| v4l2_std_id *id, __u16 int_freq, int scode) |
| { |
| struct xc2028_data *priv = fe->tuner_priv; |
| int pos, rc; |
| unsigned char *p; |
| |
| tuner_dbg("%s called\n", __func__); |
| |
| if (!int_freq) { |
| pos = seek_firmware(fe, type, id); |
| if (pos < 0) |
| return pos; |
| } else { |
| for (pos = 0; pos < priv->firm_size; pos++) { |
| if ((priv->firm[pos].int_freq == int_freq) && |
| (priv->firm[pos].type & HAS_IF)) |
| break; |
| } |
| if (pos == priv->firm_size) |
| return -ENOENT; |
| } |
| |
| p = priv->firm[pos].ptr; |
| |
| if (priv->firm[pos].type & HAS_IF) { |
| if (priv->firm[pos].size != 12 * 16 || scode >= 16) |
| return -EINVAL; |
| p += 12 * scode; |
| } else { |
| /* 16 SCODE entries per file; each SCODE entry is 12 bytes and |
| * has a 2-byte size header in the firmware format. */ |
| if (priv->firm[pos].size != 14 * 16 || scode >= 16 || |
| le16_to_cpu(*(__le16 *)(p + 14 * scode)) != 12) |
| return -EINVAL; |
| p += 14 * scode + 2; |
| } |
| |
| tuner_info("Loading SCODE for type="); |
| dump_firm_type_and_int_freq(priv->firm[pos].type, |
| priv->firm[pos].int_freq); |
| printk(KERN_CONT "(%x), id %016llx.\n", priv->firm[pos].type, |
| (unsigned long long)*id); |
| |
| if (priv->firm_version < 0x0202) |
| rc = send_seq(priv, {0x20, 0x00, 0x00, 0x00}); |
| else |
| rc = send_seq(priv, {0xa0, 0x00, 0x00, 0x00}); |
| if (rc < 0) |
| return -EIO; |
| |
| rc = i2c_send(priv, p, 12); |
| if (rc < 0) |
| return -EIO; |
| |
| rc = send_seq(priv, {0x00, 0x8c}); |
| if (rc < 0) |
| return -EIO; |
| |
| return 0; |
| } |
| |
| static int xc2028_sleep(struct dvb_frontend *fe); |
| |
| static int check_firmware(struct dvb_frontend *fe, unsigned int type, |
| v4l2_std_id std, __u16 int_freq) |
| { |
| struct xc2028_data *priv = fe->tuner_priv; |
| struct firmware_properties new_fw; |
| int rc, retry_count = 0; |
| u16 version, hwmodel; |
| v4l2_std_id std0; |
| |
| tuner_dbg("%s called\n", __func__); |
| |
| rc = check_device_status(priv); |
| if (rc < 0) |
| return rc; |
| |
| if (priv->ctrl.mts && !(type & FM)) |
| type |= MTS; |
| |
| retry: |
| new_fw.type = type; |
| new_fw.id = std; |
| new_fw.std_req = std; |
| new_fw.scode_table = SCODE | priv->ctrl.scode_table; |
| new_fw.scode_nr = 0; |
| new_fw.int_freq = int_freq; |
| |
| tuner_dbg("checking firmware, user requested type="); |
| if (debug) { |
| dump_firm_type(new_fw.type); |
| printk(KERN_CONT "(%x), id %016llx, ", new_fw.type, |
| (unsigned long long)new_fw.std_req); |
| if (!int_freq) { |
| printk(KERN_CONT "scode_tbl "); |
| dump_firm_type(priv->ctrl.scode_table); |
| printk(KERN_CONT "(%x), ", priv->ctrl.scode_table); |
| } else |
| printk(KERN_CONT "int_freq %d, ", new_fw.int_freq); |
| printk(KERN_CONT "scode_nr %d\n", new_fw.scode_nr); |
| } |
| |
| /* |
| * No need to reload base firmware if it matches and if the tuner |
| * is not at sleep mode |
| */ |
| if ((priv->state == XC2028_ACTIVE) && |
| (((BASE | new_fw.type) & BASE_TYPES) == |
| (priv->cur_fw.type & BASE_TYPES))) { |
| tuner_dbg("BASE firmware not changed.\n"); |
| goto skip_base; |
| } |
| |
| /* Updating BASE - forget about all currently loaded firmware */ |
| memset(&priv->cur_fw, 0, sizeof(priv->cur_fw)); |
| |
| /* Reset is needed before loading firmware */ |
| rc = do_tuner_callback(fe, XC2028_TUNER_RESET, 0); |
| if (rc < 0) |
| goto fail; |
| |
| /* BASE firmwares are all std0 */ |
| std0 = 0; |
| rc = load_firmware(fe, BASE | new_fw.type, &std0); |
| if (rc < 0) { |
| tuner_err("Error %d while loading base firmware\n", |
| rc); |
| goto fail; |
| } |
| |
| /* Load INIT1, if needed */ |
| tuner_dbg("Load init1 firmware, if exists\n"); |
| |
| rc = load_firmware(fe, BASE | INIT1 | new_fw.type, &std0); |
| if (rc == -ENOENT) |
| rc = load_firmware(fe, (BASE | INIT1 | new_fw.type) & ~F8MHZ, |
| &std0); |
| if (rc < 0 && rc != -ENOENT) { |
| tuner_err("Error %d while loading init1 firmware\n", |
| rc); |
| goto fail; |
| } |
| |
| skip_base: |
| /* |
| * No need to reload standard specific firmware if base firmware |
| * was not reloaded and requested video standards have not changed. |
| */ |
| if (priv->cur_fw.type == (BASE | new_fw.type) && |
| priv->cur_fw.std_req == std) { |
| tuner_dbg("Std-specific firmware already loaded.\n"); |
| goto skip_std_specific; |
| } |
| |
| /* Reloading std-specific firmware forces a SCODE update */ |
| priv->cur_fw.scode_table = 0; |
| |
| rc = load_firmware(fe, new_fw.type, &new_fw.id); |
| if (rc == -ENOENT) |
| rc = load_firmware(fe, new_fw.type & ~F8MHZ, &new_fw.id); |
| |
| if (rc < 0) |
| goto fail; |
| |
| skip_std_specific: |
| if (priv->cur_fw.scode_table == new_fw.scode_table && |
| priv->cur_fw.scode_nr == new_fw.scode_nr) { |
| tuner_dbg("SCODE firmware already loaded.\n"); |
| goto check_device; |
| } |
| |
| if (new_fw.type & FM) |
| goto check_device; |
| |
| /* Load SCODE firmware, if exists */ |
| tuner_dbg("Trying to load scode %d\n", new_fw.scode_nr); |
| |
| rc = load_scode(fe, new_fw.type | new_fw.scode_table, &new_fw.id, |
| new_fw.int_freq, new_fw.scode_nr); |
| |
| check_device: |
| if (xc2028_get_reg(priv, 0x0004, &version) < 0 || |
| xc2028_get_reg(priv, 0x0008, &hwmodel) < 0) { |
| tuner_err("Unable to read tuner registers.\n"); |
| goto fail; |
| } |
| |
| tuner_dbg("Device is Xceive %d version %d.%d, firmware version %d.%d\n", |
| hwmodel, (version & 0xf000) >> 12, (version & 0xf00) >> 8, |
| (version & 0xf0) >> 4, version & 0xf); |
| |
| |
| if (priv->ctrl.read_not_reliable) |
| goto read_not_reliable; |
| |
| /* Check firmware version against what we downloaded. */ |
| if (priv->firm_version != ((version & 0xf0) << 4 | (version & 0x0f))) { |
| if (!priv->ctrl.read_not_reliable) { |
| tuner_err("Incorrect readback of firmware version.\n"); |
| goto fail; |
| } else { |
| tuner_err("Returned an incorrect version. However, read is not reliable enough. Ignoring it.\n"); |
| hwmodel = 3028; |
| } |
| } |
| |
| /* Check that the tuner hardware model remains consistent over time. */ |
| if (priv->hwmodel == 0 && (hwmodel == 2028 || hwmodel == 3028)) { |
| priv->hwmodel = hwmodel; |
| priv->hwvers = version & 0xff00; |
| } else if (priv->hwmodel == 0 || priv->hwmodel != hwmodel || |
| priv->hwvers != (version & 0xff00)) { |
| tuner_err("Read invalid device hardware information - tuner hung?\n"); |
| goto fail; |
| } |
| |
| read_not_reliable: |
| priv->cur_fw = new_fw; |
| |
| /* |
| * By setting BASE in cur_fw.type only after successfully loading all |
| * firmwares, we can: |
| * 1. Identify that BASE firmware with type=0 has been loaded; |
| * 2. Tell whether BASE firmware was just changed the next time through. |
| */ |
| priv->cur_fw.type |= BASE; |
| priv->state = XC2028_ACTIVE; |
| |
| return 0; |
| |
| fail: |
| free_firmware(priv); |
| |
| if (retry_count < 8) { |
| msleep(50); |
| retry_count++; |
| tuner_dbg("Retrying firmware load\n"); |
| goto retry; |
| } |
| |
| /* Firmware didn't load. Put the device to sleep */ |
| xc2028_sleep(fe); |
| |
| if (rc == -ENOENT) |
| rc = -EINVAL; |
| return rc; |
| } |
| |
| static int xc2028_signal(struct dvb_frontend *fe, u16 *strength) |
| { |
| struct xc2028_data *priv = fe->tuner_priv; |
| u16 frq_lock, signal = 0; |
| int rc, i; |
| |
| tuner_dbg("%s called\n", __func__); |
| |
| rc = check_device_status(priv); |
| if (rc < 0) |
| return rc; |
| |
| /* If the device is sleeping, no channel is tuned */ |
| if (!rc) { |
| *strength = 0; |
| return 0; |
| } |
| |
| mutex_lock(&priv->lock); |
| |
| /* Sync Lock Indicator */ |
| for (i = 0; i < 3; i++) { |
| rc = xc2028_get_reg(priv, XREG_LOCK, &frq_lock); |
| if (rc < 0) |
| goto ret; |
| |
| if (frq_lock) |
| break; |
| msleep(6); |
| } |
| |
| /* Frequency didn't lock */ |
| if (frq_lock == 2) |
| goto ret; |
| |
| /* Get SNR of the video signal */ |
| rc = xc2028_get_reg(priv, XREG_SNR, &signal); |
| if (rc < 0) |
| goto ret; |
| |
| /* Signal level is 3 bits only */ |
| |
| signal = ((1 << 12) - 1) | ((signal & 0x07) << 12); |
| |
| ret: |
| mutex_unlock(&priv->lock); |
| |
| *strength = signal; |
| |
| tuner_dbg("signal strength is %d\n", signal); |
| |
| return rc; |
| } |
| |
| static int xc2028_get_afc(struct dvb_frontend *fe, s32 *afc) |
| { |
| struct xc2028_data *priv = fe->tuner_priv; |
| int i, rc; |
| u16 frq_lock = 0; |
| s16 afc_reg = 0; |
| |
| rc = check_device_status(priv); |
| if (rc < 0) |
| return rc; |
| |
| /* If the device is sleeping, no channel is tuned */ |
| if (!rc) { |
| *afc = 0; |
| return 0; |
| } |
| |
| mutex_lock(&priv->lock); |
| |
| /* Sync Lock Indicator */ |
| for (i = 0; i < 3; i++) { |
| rc = xc2028_get_reg(priv, XREG_LOCK, &frq_lock); |
| if (rc < 0) |
| goto ret; |
| |
| if (frq_lock) |
| break; |
| msleep(6); |
| } |
| |
| /* Frequency didn't lock */ |
| if (frq_lock == 2) |
| goto ret; |
| |
| /* Get AFC */ |
| rc = xc2028_get_reg(priv, XREG_FREQ_ERROR, &afc_reg); |
| if (rc < 0) |
| goto ret; |
| |
| *afc = afc_reg * 15625; /* Hz */ |
| |
| tuner_dbg("AFC is %d Hz\n", *afc); |
| |
| ret: |
| mutex_unlock(&priv->lock); |
| |
| return rc; |
| } |
| |
| #define DIV 15625 |
| |
| static int generic_set_freq(struct dvb_frontend *fe, u32 freq /* in HZ */, |
| enum v4l2_tuner_type new_type, |
| unsigned int type, |
| v4l2_std_id std, |
| u16 int_freq) |
| { |
| struct xc2028_data *priv = fe->tuner_priv; |
| int rc = -EINVAL; |
| unsigned char buf[4]; |
| u32 div, offset = 0; |
| |
| tuner_dbg("%s called\n", __func__); |
| |
| mutex_lock(&priv->lock); |
| |
| tuner_dbg("should set frequency %d kHz\n", freq / 1000); |
| |
| if (check_firmware(fe, type, std, int_freq) < 0) |
| goto ret; |
| |
| /* On some cases xc2028 can disable video output, if |
| * very weak signals are received. By sending a soft |
| * reset, this is re-enabled. So, it is better to always |
| * send a soft reset before changing channels, to be sure |
| * that xc2028 will be in a safe state. |
| * Maybe this might also be needed for DTV. |
| */ |
| switch (new_type) { |
| case V4L2_TUNER_ANALOG_TV: |
| rc = send_seq(priv, {0x00, 0x00}); |
| |
| /* Analog mode requires offset = 0 */ |
| break; |
| case V4L2_TUNER_RADIO: |
| /* Radio mode requires offset = 0 */ |
| break; |
| case V4L2_TUNER_DIGITAL_TV: |
| /* |
| * Digital modes require an offset to adjust to the |
| * proper frequency. The offset depends on what |
| * firmware version is used. |
| */ |
| |
| /* |
| * Adjust to the center frequency. This is calculated by the |
| * formula: offset = 1.25MHz - BW/2 |
| * For DTV 7/8, the firmware uses BW = 8000, so it needs a |
| * further adjustment to get the frequency center on VHF |
| */ |
| |
| /* |
| * The firmware DTV78 used to work fine in UHF band (8 MHz |
| * bandwidth) but not at all in VHF band (7 MHz bandwidth). |
| * The real problem was connected to the formula used to |
| * calculate the center frequency offset in VHF band. |
| * In fact, removing the 500KHz adjustment fixed the problem. |
| * This is coherent to what was implemented for the DTV7 |
| * firmware. |
| * In the end, now the center frequency is the same for all 3 |
| * firmwares (DTV7, DTV8, DTV78) and doesn't depend on channel |
| * bandwidth. |
| */ |
| |
| if (priv->cur_fw.type & DTV6) |
| offset = 1750000; |
| else /* DTV7 or DTV8 or DTV78 */ |
| offset = 2750000; |
| |
| /* |
| * xc3028 additional "magic" |
| * Depending on the firmware version, it needs some adjustments |
| * to properly centralize the frequency. This seems to be |
| * needed to compensate the SCODE table adjustments made by |
| * newer firmwares |
| */ |
| |
| /* |
| * The proper adjustment would be to do it at s-code table. |
| * However, this didn't work, as reported by |
| * Robert Lowery <rglowery@exemail.com.au> |
| */ |
| |
| #if 0 |
| /* |
| * Still need tests for XC3028L (firmware 3.2 or upper) |
| * So, for now, let's just comment the per-firmware |
| * version of this change. Reports with xc3028l working |
| * with and without the lines below are welcome |
| */ |
| |
| if (priv->firm_version < 0x0302) { |
| if (priv->cur_fw.type & DTV7) |
| offset += 500000; |
| } else { |
| if (priv->cur_fw.type & DTV7) |
| offset -= 300000; |
| else if (type != ATSC) /* DVB @6MHz, DTV 8 and DTV 7/8 */ |
| offset += 200000; |
| } |
| #endif |
| break; |
| default: |
| tuner_err("Unsupported tuner type %d.\n", new_type); |
| break; |
| } |
| |
| div = (freq - offset + DIV / 2) / DIV; |
| |
| /* CMD= Set frequency */ |
| if (priv->firm_version < 0x0202) |
| rc = send_seq(priv, {0x00, XREG_RF_FREQ, 0x00, 0x00}); |
| else |
| rc = send_seq(priv, {0x80, XREG_RF_FREQ, 0x00, 0x00}); |
| if (rc < 0) |
| goto ret; |
| |
| /* Return code shouldn't be checked. |
| The reset CLK is needed only with tm6000. |
| Driver should work fine even if this fails. |
| */ |
| if (priv->ctrl.msleep) |
| msleep(priv->ctrl.msleep); |
| do_tuner_callback(fe, XC2028_RESET_CLK, 1); |
| |
| msleep(10); |
| |
| buf[0] = 0xff & (div >> 24); |
| buf[1] = 0xff & (div >> 16); |
| buf[2] = 0xff & (div >> 8); |
| buf[3] = 0xff & (div); |
| |
| rc = i2c_send(priv, buf, sizeof(buf)); |
| if (rc < 0) |
| goto ret; |
| msleep(100); |
| |
| priv->frequency = freq; |
| |
| tuner_dbg("divisor= %*ph (freq=%d.%03d)\n", 4, buf, |
| freq / 1000000, (freq % 1000000) / 1000); |
| |
| rc = 0; |
| |
| ret: |
| mutex_unlock(&priv->lock); |
| |
| return rc; |
| } |
| |
| static int xc2028_set_analog_freq(struct dvb_frontend *fe, |
| struct analog_parameters *p) |
| { |
| struct xc2028_data *priv = fe->tuner_priv; |
| unsigned int type=0; |
| |
| tuner_dbg("%s called\n", __func__); |
| |
| if (p->mode == V4L2_TUNER_RADIO) { |
| type |= FM; |
| if (priv->ctrl.input1) |
| type |= INPUT1; |
| return generic_set_freq(fe, (625l * p->frequency) / 10, |
| V4L2_TUNER_RADIO, type, 0, 0); |
| } |
| |
| /* if std is not defined, choose one */ |
| if (!p->std) |
| p->std = V4L2_STD_MN; |
| |
| /* PAL/M, PAL/N, PAL/Nc and NTSC variants should use 6MHz firmware */ |
| if (!(p->std & V4L2_STD_MN)) |
| type |= F8MHZ; |
| |
| /* Add audio hack to std mask */ |
| p->std |= parse_audio_std_option(); |
| |
| return generic_set_freq(fe, 62500l * p->frequency, |
| V4L2_TUNER_ANALOG_TV, type, p->std, 0); |
| } |
| |
| static int xc2028_set_params(struct dvb_frontend *fe) |
| { |
| struct dtv_frontend_properties *c = &fe->dtv_property_cache; |
| u32 delsys = c->delivery_system; |
| u32 bw = c->bandwidth_hz; |
| struct xc2028_data *priv = fe->tuner_priv; |
| int rc; |
| unsigned int type = 0; |
| u16 demod = 0; |
| |
| tuner_dbg("%s called\n", __func__); |
| |
| rc = check_device_status(priv); |
| if (rc < 0) |
| return rc; |
| |
| switch (delsys) { |
| case SYS_DVBT: |
| case SYS_DVBT2: |
| /* |
| * The only countries with 6MHz seem to be Taiwan/Uruguay. |
| * Both seem to require QAM firmware for OFDM decoding |
| * Tested in Taiwan by Terry Wu <terrywu2009@gmail.com> |
| */ |
| if (bw <= 6000000) |
| type |= QAM; |
| |
| switch (priv->ctrl.type) { |
| case XC2028_D2633: |
| type |= D2633; |
| break; |
| case XC2028_D2620: |
| type |= D2620; |
| break; |
| case XC2028_AUTO: |
| default: |
| /* Zarlink seems to need D2633 */ |
| if (priv->ctrl.demod == XC3028_FE_ZARLINK456) |
| type |= D2633; |
| else |
| type |= D2620; |
| } |
| break; |
| case SYS_ATSC: |
| /* The only ATSC firmware (at least on v2.7) is D2633 */ |
| type |= ATSC | D2633; |
| break; |
| /* DVB-S and pure QAM (FE_QAM) are not supported */ |
| default: |
| return -EINVAL; |
| } |
| |
| if (bw <= 6000000) { |
| type |= DTV6; |
| priv->ctrl.vhfbw7 = 0; |
| priv->ctrl.uhfbw8 = 0; |
| } else if (bw <= 7000000) { |
| if (c->frequency < 470000000) |
| priv->ctrl.vhfbw7 = 1; |
| else |
| priv->ctrl.uhfbw8 = 0; |
| type |= (priv->ctrl.vhfbw7 && priv->ctrl.uhfbw8) ? DTV78 : DTV7; |
| type |= F8MHZ; |
| } else { |
| if (c->frequency < 470000000) |
| priv->ctrl.vhfbw7 = 0; |
| else |
| priv->ctrl.uhfbw8 = 1; |
| type |= (priv->ctrl.vhfbw7 && priv->ctrl.uhfbw8) ? DTV78 : DTV8; |
| type |= F8MHZ; |
| } |
| |
| /* All S-code tables need a 200kHz shift */ |
| if (priv->ctrl.demod) { |
| demod = priv->ctrl.demod; |
| |
| /* |
| * Newer firmwares require a 200 kHz offset only for ATSC |
| */ |
| if (type == ATSC || priv->firm_version < 0x0302) |
| demod += 200; |
| /* |
| * The DTV7 S-code table needs a 700 kHz shift. |
| * |
| * DTV7 is only used in Australia. Germany or Italy may also |
| * use this firmware after initialization, but a tune to a UHF |
| * channel should then cause DTV78 to be used. |
| * |
| * Unfortunately, on real-field tests, the s-code offset |
| * didn't work as expected, as reported by |
| * Robert Lowery <rglowery@exemail.com.au> |
| */ |
| } |
| |
| return generic_set_freq(fe, c->frequency, |
| V4L2_TUNER_DIGITAL_TV, type, 0, demod); |
| } |
| |
| static int xc2028_sleep(struct dvb_frontend *fe) |
| { |
| struct xc2028_data *priv = fe->tuner_priv; |
| int rc; |
| |
| rc = check_device_status(priv); |
| if (rc < 0) |
| return rc; |
| |
| /* Device is already in sleep mode */ |
| if (!rc) |
| return 0; |
| |
| /* Avoid firmware reload on slow devices or if PM disabled */ |
| if (no_poweroff || priv->ctrl.disable_power_mgmt) |
| return 0; |
| |
| tuner_dbg("Putting xc2028/3028 into poweroff mode.\n"); |
| if (debug > 1) { |
| tuner_dbg("Printing sleep stack trace:\n"); |
| dump_stack(); |
| } |
| |
| mutex_lock(&priv->lock); |
| |
| if (priv->firm_version < 0x0202) |
| rc = send_seq(priv, {0x00, XREG_POWER_DOWN, 0x00, 0x00}); |
| else |
| rc = send_seq(priv, {0x80, XREG_POWER_DOWN, 0x00, 0x00}); |
| |
| if (rc >= 0) |
| priv->state = XC2028_SLEEP; |
| |
| mutex_unlock(&priv->lock); |
| |
| return rc; |
| } |
| |
| static void xc2028_dvb_release(struct dvb_frontend *fe) |
| { |
| struct xc2028_data *priv = fe->tuner_priv; |
| |
| tuner_dbg("%s called\n", __func__); |
| |
| mutex_lock(&xc2028_list_mutex); |
| |
| /* only perform final cleanup if this is the last instance */ |
| if (hybrid_tuner_report_instance_count(priv) == 1) |
| free_firmware(priv); |
| |
| if (priv) |
| hybrid_tuner_release_state(priv); |
| |
| mutex_unlock(&xc2028_list_mutex); |
| |
| fe->tuner_priv = NULL; |
| } |
| |
| static int xc2028_get_frequency(struct dvb_frontend *fe, u32 *frequency) |
| { |
| struct xc2028_data *priv = fe->tuner_priv; |
| int rc; |
| |
| tuner_dbg("%s called\n", __func__); |
| |
| rc = check_device_status(priv); |
| if (rc < 0) |
| return rc; |
| |
| *frequency = priv->frequency; |
| |
| return 0; |
| } |
| |
| static void load_firmware_cb(const struct firmware *fw, |
| void *context) |
| { |
| struct dvb_frontend *fe = context; |
| struct xc2028_data *priv; |
| int rc; |
| |
| if (!fe) { |
| pr_warn("xc2028: No frontend in %s\n", __func__); |
| return; |
| } |
| |
| priv = fe->tuner_priv; |
| |
| tuner_dbg("request_firmware_nowait(): %s\n", fw ? "OK" : "error"); |
| if (!fw) { |
| tuner_err("Could not load firmware %s.\n", priv->fname); |
| priv->state = XC2028_NODEV; |
| return; |
| } |
| |
| rc = load_all_firmwares(fe, fw); |
| |
| release_firmware(fw); |
| |
| if (rc < 0) |
| return; |
| priv->state = XC2028_ACTIVE; |
| } |
| |
| static int xc2028_set_config(struct dvb_frontend *fe, void *priv_cfg) |
| { |
| struct xc2028_data *priv = fe->tuner_priv; |
| struct xc2028_ctrl *p = priv_cfg; |
| int rc = 0; |
| |
| tuner_dbg("%s called\n", __func__); |
| |
| mutex_lock(&priv->lock); |
| |
| /* |
| * Copy the config data. |
| */ |
| memcpy(&priv->ctrl, p, sizeof(priv->ctrl)); |
| |
| /* |
| * If firmware name changed, frees firmware. As free_firmware will |
| * reset the status to NO_FIRMWARE, this forces a new request_firmware |
| */ |
| if (!firmware_name[0] && p->fname && |
| priv->fname && strcmp(p->fname, priv->fname)) |
| free_firmware(priv); |
| |
| if (priv->ctrl.max_len < 9) |
| priv->ctrl.max_len = 13; |
| |
| if (priv->state == XC2028_NO_FIRMWARE) { |
| if (!firmware_name[0]) |
| priv->fname = kstrdup(p->fname, GFP_KERNEL); |
| else |
| priv->fname = firmware_name; |
| |
| if (!priv->fname) { |
| rc = -ENOMEM; |
| goto unlock; |
| } |
| |
| rc = request_firmware_nowait(THIS_MODULE, 1, |
| priv->fname, |
| priv->i2c_props.adap->dev.parent, |
| GFP_KERNEL, |
| fe, load_firmware_cb); |
| if (rc < 0) { |
| tuner_err("Failed to request firmware %s\n", |
| priv->fname); |
| priv->state = XC2028_NODEV; |
| } else |
| priv->state = XC2028_WAITING_FIRMWARE; |
| } |
| unlock: |
| mutex_unlock(&priv->lock); |
| |
| return rc; |
| } |
| |
| static const struct dvb_tuner_ops xc2028_dvb_tuner_ops = { |
| .info = { |
| .name = "Xceive XC3028", |
| .frequency_min_hz = 42 * MHz, |
| .frequency_max_hz = 864 * MHz, |
| .frequency_step_hz = 50 * kHz, |
| }, |
| |
| .set_config = xc2028_set_config, |
| .set_analog_params = xc2028_set_analog_freq, |
| .release = xc2028_dvb_release, |
| .get_frequency = xc2028_get_frequency, |
| .get_rf_strength = xc2028_signal, |
| .get_afc = xc2028_get_afc, |
| .set_params = xc2028_set_params, |
| .sleep = xc2028_sleep, |
| }; |
| |
| struct dvb_frontend *xc2028_attach(struct dvb_frontend *fe, |
| struct xc2028_config *cfg) |
| { |
| struct xc2028_data *priv; |
| int instance; |
| |
| if (debug) |
| printk(KERN_DEBUG "xc2028: Xcv2028/3028 init called!\n"); |
| |
| if (NULL == cfg) |
| return NULL; |
| |
| if (!fe) { |
| printk(KERN_ERR "xc2028: No frontend!\n"); |
| return NULL; |
| } |
| |
| mutex_lock(&xc2028_list_mutex); |
| |
| instance = hybrid_tuner_request_state(struct xc2028_data, priv, |
| hybrid_tuner_instance_list, |
| cfg->i2c_adap, cfg->i2c_addr, |
| "xc2028"); |
| switch (instance) { |
| case 0: |
| /* memory allocation failure */ |
| goto fail; |
| case 1: |
| /* new tuner instance */ |
| priv->ctrl.max_len = 13; |
| |
| mutex_init(&priv->lock); |
| |
| fe->tuner_priv = priv; |
| break; |
| case 2: |
| /* existing tuner instance */ |
| fe->tuner_priv = priv; |
| break; |
| } |
| |
| memcpy(&fe->ops.tuner_ops, &xc2028_dvb_tuner_ops, |
| sizeof(xc2028_dvb_tuner_ops)); |
| |
| tuner_info("type set to %s\n", "XCeive xc2028/xc3028 tuner"); |
| |
| if (cfg->ctrl) |
| xc2028_set_config(fe, cfg->ctrl); |
| |
| mutex_unlock(&xc2028_list_mutex); |
| |
| return fe; |
| fail: |
| mutex_unlock(&xc2028_list_mutex); |
| |
| xc2028_dvb_release(fe); |
| return NULL; |
| } |
| |
| EXPORT_SYMBOL_GPL(xc2028_attach); |
| |
| MODULE_DESCRIPTION("Xceive xc2028/xc3028 tuner driver"); |
| MODULE_AUTHOR("Michel Ludwig <michel.ludwig@gmail.com>"); |
| MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@kernel.org>"); |
| MODULE_LICENSE("GPL v2"); |
| MODULE_FIRMWARE(XC2028_DEFAULT_FIRMWARE); |
| MODULE_FIRMWARE(XC3028L_DEFAULT_FIRMWARE); |