/* tuner-xc2028 * * Copyright (c) 2007 Mauro Carvalho Chehab (mchehab@infradead.org) * * Copyright (c) 2007 Michel Ludwig (michel.ludwig@gmail.com) * - frontend interface * * This code is placed under the terms of the GNU General Public License v2 */ #include #include #include #include #include #include #include #include "tuner-i2c.h" #include "tuner-xc2028.h" #include "tuner-xc2028-types.h" #include #include "dvb_frontend.h" #define PREFIX "xc2028" static LIST_HEAD(xc2028_list); /* struct for storing firmware table */ struct firmware_description { unsigned int type; v4l2_std_id id; unsigned char *ptr; unsigned int size; }; struct xc2028_data { struct list_head xc2028_list; struct tuner_i2c_props i2c_props; int (*tuner_callback) (void *dev, int command, int arg); struct device *dev; void *video_dev; int count; __u32 frequency; struct firmware_description *firm; int firm_size; __u16 version; struct xc2028_ctrl ctrl; v4l2_std_id firm_type; /* video stds supported by current firmware */ fe_bandwidth_t bandwidth; /* Firmware bandwidth: 6M, 7M or 8M */ int need_load_generic; /* The generic firmware were loaded? */ int max_len; /* Max firmware chunk */ enum tuner_mode mode; struct i2c_client *i2c_client; struct mutex lock; }; #define i2c_send(rc, priv, buf, size) do { \ 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); \ } while (0) #define i2c_rcv(rc, priv, buf, size) do { \ rc = tuner_i2c_xfer_recv(&priv->i2c_props, buf, size); \ if (size != rc) \ tuner_info("i2c input error: rc = %d (should be %d)\n", \ rc, (int)size); \ } while (0) #define send_seq(priv, data...) do { \ int rc; \ static u8 _val[] = data; \ if (sizeof(_val) != \ (rc = tuner_i2c_xfer_send(&priv->i2c_props, \ _val, sizeof(_val)))) { \ tuner_info("Error on line %d: %d\n", __LINE__, rc); \ return -EINVAL; \ } \ msleep(10); \ } while (0) static unsigned int xc2028_get_reg(struct xc2028_data *priv, u16 reg) { int rc; unsigned char buf[2]; tuner_info("%s called\n", __FUNCTION__); buf[0] = reg>>8; buf[1] = (unsigned char) reg; i2c_send(rc, priv, buf, 2); if (rc < 0) return rc; i2c_rcv(rc, priv, buf, 2); if (rc < 0) return rc; return (buf[1]) | (buf[0] << 8); } static void free_firmware(struct xc2028_data *priv) { int i; if (!priv->firm) return; for (i = 0; i < priv->firm_size; i++) kfree(priv->firm[i].ptr); kfree(priv->firm); priv->firm = NULL; priv->need_load_generic = 1; } static int load_all_firmwares(struct dvb_frontend *fe) { struct xc2028_data *priv = fe->tuner_priv; const struct firmware *fw = NULL; unsigned char *p, *endp; int rc = 0; int n, n_array; char name[33]; tuner_info("%s called\n", __FUNCTION__); tuner_info("Loading firmware %s\n", priv->ctrl.fname); rc = request_firmware(&fw, priv->ctrl.fname, priv->dev); if (rc < 0) { if (rc == -ENOENT) tuner_info("Error: firmware %s not found.\n", priv->ctrl.fname); else tuner_info("Error %d while requesting firmware %s \n", rc, priv->ctrl.fname); return rc; } p = fw->data; endp = p + fw->size; if (fw->size < sizeof(name) - 1 + 2) { tuner_info("Error: firmware size is zero!\n"); rc = -EINVAL; goto done; } memcpy(name, p, sizeof(name) - 1); name[sizeof(name) - 1] = 0; p += sizeof(name) - 1; priv->version = le16_to_cpu(*(__u16 *) p); p += 2; tuner_info("firmware: %s, ver %d.%d\n", name, priv->version >> 8, priv->version & 0xff); if (p + 2 > endp) goto corrupt; n_array = le16_to_cpu(*(__u16 *) p); p += 2; tuner_info("there are %d firmwares at %s\n", n_array, priv->ctrl.fname); priv->firm = kzalloc(sizeof(*priv->firm) * n_array, GFP_KERNEL); if (!fw) { tuner_info("Not enough memory for loading firmware.\n"); rc = -ENOMEM; goto done; } priv->firm_size = n_array; n = -1; while (p < endp) { __u32 type, size; v4l2_std_id id; n++; if (n >= n_array) { tuner_info("Too much firmwares at the file\n"); goto corrupt; } /* Checks if there's enough bytes to read */ if (p + sizeof(type) + sizeof(id) + sizeof(size) > endp) { tuner_info("Lost firmware!\n"); goto corrupt; } type = le32_to_cpu(*(__u32 *) p); p += sizeof(type); id = le64_to_cpu(*(v4l2_std_id *) p); p += sizeof(id); size = le32_to_cpu(*(v4l2_std_id *) p); p += sizeof(size); if ((!size) || (size + p > endp)) { tuner_info("Firmware type %x, id %lx corrupt\n", type, (unsigned long)id); goto corrupt; } priv->firm[n].ptr = kzalloc(size, GFP_KERNEL); if (!priv->firm[n].ptr) { tuner_info("Not enough memory.\n"); rc = -ENOMEM; goto err; } tuner_info("Loading firmware type %x, id %lx, size=%d.\n", type, (unsigned long)id, size); memcpy(priv->firm[n].ptr, p, size); priv->firm[n].type = type; priv->firm[n].id = id; priv->firm[n].size = size; p += size; } if (n + 1 != priv->firm_size) { tuner_info("Firmware file is incomplete!\n"); goto corrupt; } goto done; corrupt: rc = -EINVAL; tuner_info("Error: firmware file is corrupted!\n"); err: tuner_info("Releasing loaded firmware file.\n"); free_firmware(priv); done: release_firmware(fw); tuner_info("Firmware files loaded.\n"); return rc; } static int load_firmware(struct dvb_frontend *fe, unsigned int type, v4l2_std_id * id) { struct xc2028_data *priv = fe->tuner_priv; int i, rc; unsigned char *p, *endp, buf[priv->max_len]; tuner_info("%s called\n", __FUNCTION__); if (!priv->firm) { printk(KERN_ERR PREFIX "Error! firmware not loaded\n"); return -EINVAL; } if ((type == 0) && (*id == 0)) *id = V4L2_STD_PAL; /* Seek for exact match */ for (i = 0; i < priv->firm_size; i++) { if ((type == priv->firm[i].type) && (*id == priv->firm[i].id)) goto found; } /* Seek for generic video standard match */ for (i = 0; i < priv->firm_size; i++) { if ((type == priv->firm[i].type) && (*id & priv->firm[i].id)) goto found; } /*FIXME: Would make sense to seek for type "hint" match ? */ tuner_info("Can't find firmware for type=%x, id=%lx\n", type, (long int)*id); return -EINVAL; found: *id = priv->firm[i].id; tuner_info("Found firmware for type=%x, id=%lx\n", type, (long int)*id); p = priv->firm[i].ptr; if (!p) { printk(KERN_ERR PREFIX "Firmware pointer were freed!"); return -EINVAL; } endp = p + priv->firm[i].size; while (p < endp) { __u16 size; /* Checks if there's enough bytes to read */ if (p + sizeof(size) > endp) { tuner_info("missing bytes\n"); return -EINVAL; } size = le16_to_cpu(*(__u16 *) p); p += sizeof(size); if (size == 0xffff) return 0; if (!size) { /* Special callback command received */ rc = priv->tuner_callback(priv->video_dev, XC2028_TUNER_RESET, 0); if (rc < 0) { tuner_info("Error at RESET code %d\n", (*p) & 0x7f); return -EINVAL; } continue; } /* Checks for a sleep command */ if (size & 0x8000) { msleep(size & 0x7fff); continue; } if ((size + p > endp)) { tuner_info("missing bytes: need %d, have %d\n", size, (int)(endp - p)); return -EINVAL; } buf[0] = *p; p++; size--; /* Sends message chunks */ while (size > 0) { int len = (size < priv->max_len - 1) ? size : priv->max_len - 1; memcpy(buf + 1, p, len); i2c_send(rc, priv, buf, len + 1); if (rc < 0) { tuner_info("%d returned from send\n", rc); return -EINVAL; } p += len; size -= len; } } return -EINVAL; } static int check_firmware(struct dvb_frontend *fe, enum tuner_mode new_mode, v4l2_std_id std, fe_bandwidth_t bandwidth) { struct xc2028_data *priv = fe->tuner_priv; int rc, version, hwmodel; v4l2_std_id std0 = 0; unsigned int type0 = 0, type = 0; int change_digital_bandwidth; tuner_info("%s called\n", __FUNCTION__); if (!priv->firm) { if (!priv->ctrl.fname) return -EINVAL; rc = load_all_firmwares(fe); if (rc < 0) return rc; } tuner_info("I am in mode %u and I should switch to mode %i\n", priv->mode, new_mode); /* first of all, determine whether we have switched the mode */ if (new_mode != priv->mode) { priv->mode = new_mode; priv->need_load_generic = 1; } change_digital_bandwidth = (priv->mode == T_DIGITAL_TV && bandwidth != priv->bandwidth) ? 1 : 0; tuner_info("old bandwidth %u, new bandwidth %u\n", priv->bandwidth, bandwidth); if (priv->need_load_generic) { /* Reset is needed before loading firmware */ rc = priv->tuner_callback(priv->video_dev, XC2028_TUNER_RESET, 0); if (rc < 0) return rc; type0 = BASE; if (priv->ctrl.type == XC2028_FIRM_MTS) type0 |= MTS; if (priv->bandwidth == 8) type0 |= F8MHZ; /* FIXME: How to load FM and FM|INPUT1 firmwares? */ rc = load_firmware(fe, type0, &std0); if (rc < 0) { tuner_info("Error %d while loading generic firmware\n", rc); return rc; } priv->need_load_generic = 0; priv->firm_type = 0; if (priv->mode == T_DIGITAL_TV) change_digital_bandwidth = 1; } tuner_info("I should change bandwidth %u\n", change_digital_bandwidth); if (change_digital_bandwidth) { /*FIXME: Should allow selecting between D2620 and D2633 */ type |= D2620; /* FIXME: When should select a DTV78 firmware? */ switch (bandwidth) { case BANDWIDTH_8_MHZ: type |= DTV8; break; case BANDWIDTH_7_MHZ: type |= DTV7; break; case BANDWIDTH_6_MHZ: /* FIXME: Should allow select also ATSC */ type |= DTV6_QAM; break; default: tuner_info("error: bandwidth not supported.\n"); }; priv->bandwidth = bandwidth; } /* Load INIT1, if needed */ tuner_info("Trying to load init1 firmware\n"); type0 = BASE | INIT1 | priv->ctrl.type; if (priv->ctrl.type == XC2028_FIRM_MTS) type0 |= MTS; /* FIXME: Should handle errors - if INIT1 found */ rc = load_firmware(fe, type0, &std0); /* FIXME: Should add support for FM radio */ if (priv->ctrl.type == XC2028_FIRM_MTS) type |= MTS; tuner_info("firmware standard to load: %08lx\n", (unsigned long)std); if (priv->firm_type & std) { tuner_info("no need to load a std-specific firmware.\n"); return 0; } rc = load_firmware(fe, type, &std); if (rc < 0) return rc; version = xc2028_get_reg(priv, 0x0004); hwmodel = xc2028_get_reg(priv, 0x0008); tuner_info("Device is Xceive %d version %d.%d, " "firmware version %d.%d\n", hwmodel, (version & 0xf000) >> 12, (version & 0xf00) >> 8, (version & 0xf0) >> 4, version & 0xf); priv->firm_type = std; return 0; } static int xc2028_signal(struct dvb_frontend *fe, u16 *strength) { struct xc2028_data *priv = fe->tuner_priv; int frq_lock, signal = 0; tuner_info("%s called\n", __FUNCTION__); mutex_lock(&priv->lock); *strength = 0; /* Sync Lock Indicator */ frq_lock = xc2028_get_reg(priv, 0x0002); if (frq_lock <= 0) goto ret; /* Frequency is locked. Return signal quality */ /* Get SNR of the video signal */ signal = xc2028_get_reg(priv, 0x0040); if (signal <= 0) signal = frq_lock; ret: mutex_unlock(&priv->lock); *strength = signal; return 0; } #define DIV 15625 static int generic_set_tv_freq(struct dvb_frontend *fe, u32 freq /* in Hz */ , enum tuner_mode new_mode, v4l2_std_id std, fe_bandwidth_t bandwidth) { struct xc2028_data *priv = fe->tuner_priv; int rc = -EINVAL; unsigned char buf[5]; u32 div, offset = 0; tuner_info("%s called\n", __FUNCTION__); mutex_lock(&priv->lock); /* HACK: It seems that specific firmware need to be reloaded when freq is changed */ priv->firm_type = 0; /* Reset GPIO 1 */ rc = priv->tuner_callback(priv->video_dev, XC2028_TUNER_RESET, 0); if (rc < 0) goto ret; msleep(10); tuner_info("should set frequency %d kHz)\n", freq / 1000); if (check_firmware(fe, new_mode, std, bandwidth) < 0) goto ret; if (new_mode == T_DIGITAL_TV) offset = 2750000; div = (freq - offset + DIV / 2) / DIV; /* CMD= Set frequency */ if (priv->version < 0x0202) { send_seq(priv, {0x00, 0x02, 0x00, 0x00}); } else { send_seq(priv, {0x80, 0x02, 0x00, 0x00}); } rc = priv->tuner_callback(priv->video_dev, XC2028_RESET_CLK, 1); if (rc < 0) goto ret; msleep(10); buf[0] = 0xff & (div >> 24); buf[1] = 0xff & (div >> 16); buf[2] = 0xff & (div >> 8); buf[3] = 0xff & (div); buf[4] = 0; i2c_send(rc, priv, buf, sizeof(buf)); if (rc < 0) goto ret; msleep(100); priv->frequency = freq; printk("divider= %02x %02x %02x %02x (freq=%d.%02d)\n", buf[1], buf[2], buf[3], buf[4], freq / 1000000, (freq % 1000000) / 10000); rc = 0; ret: mutex_unlock(&priv->lock); return rc; } static int xc2028_set_tv_freq(struct dvb_frontend *fe, struct analog_parameters *p) { struct xc2028_data *priv = fe->tuner_priv; tuner_info("%s called\n", __FUNCTION__); return generic_set_tv_freq(fe, 62500l * p->frequency, T_ANALOG_TV, p->std, BANDWIDTH_8_MHZ /* NOT USED */); } static int xc2028_set_params(struct dvb_frontend *fe, struct dvb_frontend_parameters *p) { struct xc2028_data *priv = fe->tuner_priv; tuner_info("%s called\n", __FUNCTION__); /* FIXME: Only OFDM implemented */ if (fe->ops.info.type != FE_OFDM) { tuner_info("DTV type not implemented.\n"); return -EINVAL; } return generic_set_tv_freq(fe, p->frequency, T_DIGITAL_TV, 0 /* NOT USED */, p->u.ofdm.bandwidth); } static int xc2028_dvb_release(struct dvb_frontend *fe) { struct xc2028_data *priv = fe->tuner_priv; tuner_info("%s called\n", __FUNCTION__); priv->count--; if (!priv->count) { list_del(&priv->xc2028_list); kfree(priv->ctrl.fname); free_firmware(priv); kfree(priv); } return 0; } static int xc2028_get_frequency(struct dvb_frontend *fe, u32 *frequency) { struct xc2028_data *priv = fe->tuner_priv; tuner_info("%s called\n", __FUNCTION__); *frequency = priv->frequency; return 0; } 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; tuner_info("%s called\n", __FUNCTION__); priv->ctrl.type = p->type; if (p->fname) { kfree(priv->ctrl.fname); priv->ctrl.fname = kmalloc(strlen(p->fname) + 1, GFP_KERNEL); if (!priv->ctrl.fname) return -ENOMEM; free_firmware(priv); strcpy(priv->ctrl.fname, p->fname); } if (p->max_len > 0) priv->max_len = p->max_len; tuner_info("%s OK\n", __FUNCTION__); return 0; } static const struct dvb_tuner_ops xc2028_dvb_tuner_ops = { .info = { .name = "Xceive XC3028", .frequency_min = 42000000, .frequency_max = 864000000, .frequency_step = 50000, }, .set_config = xc2028_set_config, .set_analog_params = xc2028_set_tv_freq, .release = xc2028_dvb_release, .get_frequency = xc2028_get_frequency, .get_rf_strength = xc2028_signal, .set_params = xc2028_set_params, }; int xc2028_attach(struct dvb_frontend *fe, struct i2c_adapter *i2c_adap, u8 i2c_addr, struct device *dev, void *video_dev, int (*tuner_callback) (void *dev, int command, int arg)) { struct xc2028_data *priv; printk(KERN_INFO PREFIX "Xcv2028/3028 init called!\n"); if (NULL == dev) return -ENODEV; if (NULL == video_dev) return -ENODEV; if (!tuner_callback) { printk(KERN_ERR PREFIX "No tuner callback!\n"); return -EINVAL; } list_for_each_entry(priv, &xc2028_list, xc2028_list) { if (priv->dev == dev) dev = NULL; } if (dev) { priv = kzalloc(sizeof(*priv), GFP_KERNEL); if (priv == NULL) return -ENOMEM; fe->tuner_priv = priv; priv->bandwidth = BANDWIDTH_6_MHZ; priv->need_load_generic = 1; priv->mode = T_UNINITIALIZED; priv->i2c_props.addr = i2c_addr; priv->i2c_props.adap = i2c_adap; priv->dev = dev; priv->video_dev = video_dev; priv->tuner_callback = tuner_callback; priv->max_len = 13; mutex_init(&priv->lock); list_add_tail(&priv->xc2028_list, &xc2028_list); } priv->count++; 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"); return 0; } EXPORT_SYMBOL(xc2028_attach); MODULE_DESCRIPTION("Xceive xc2028/xc3028 tuner driver"); MODULE_AUTHOR("Michel Ludwig "); MODULE_AUTHOR("Mauro Carvalho Chehab "); MODULE_LICENSE("GPL");