From: Devin Heitmueller Date: Wed, 11 Mar 2009 05:59:30 +0000 (-0300) Subject: V4L/DVB (11060): au8522: rename the au8522.c source file X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=f56738cd81690dcaec92307b1a7f9f5f69af15b1;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git V4L/DVB (11060): au8522: rename the au8522.c source file Rename the au8522.c file to au8522_dig.c so that more source files can be added to the driver while preserving the original name of au8522.ko Thanks to Michael Krufky and Steven Toth for providing sample hardware, engineering level support, and testing. Signed-off-by: Devin Heitmueller Signed-off-by: Michael Krufky Signed-off-by: Mauro Carvalho Chehab --- diff --git a/drivers/media/dvb/frontends/Makefile b/drivers/media/dvb/frontends/Makefile index 2a250399b555..742826523df5 100644 --- a/drivers/media/dvb/frontends/Makefile +++ b/drivers/media/dvb/frontends/Makefile @@ -8,6 +8,7 @@ EXTRA_CFLAGS += -Idrivers/media/common/tuners/ s921-objs := s921_module.o s921_core.o stb0899-objs = stb0899_drv.o stb0899_algo.o stv0900-objs = stv0900_core.o stv0900_sw.o +au8522-objs = au8522_dig.o obj-$(CONFIG_DVB_PLL) += dvb-pll.o obj-$(CONFIG_DVB_STV0299) += stv0299.o diff --git a/drivers/media/dvb/frontends/au8522.c b/drivers/media/dvb/frontends/au8522.c deleted file mode 100644 index eabf9a68e7ec..000000000000 --- a/drivers/media/dvb/frontends/au8522.c +++ /dev/null @@ -1,874 +0,0 @@ -/* - Auvitek AU8522 QAM/8VSB demodulator driver - - Copyright (C) 2008 Steven Toth - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - -*/ - -#include -#include -#include -#include -#include -#include -#include "dvb_frontend.h" -#include "au8522.h" - -struct au8522_state { - - struct i2c_adapter *i2c; - - /* configuration settings */ - const struct au8522_config *config; - - struct dvb_frontend frontend; - - u32 current_frequency; - fe_modulation_t current_modulation; - - u32 fe_status; - unsigned int led_state; -}; - -static int debug; - -#define dprintk(arg...) do { \ - if (debug) \ - printk(arg); \ - } while (0) - -/* 16 bit registers, 8 bit values */ -static int au8522_writereg(struct au8522_state *state, u16 reg, u8 data) -{ - int ret; - u8 buf [] = { reg >> 8, reg & 0xff, data }; - - struct i2c_msg msg = { .addr = state->config->demod_address, - .flags = 0, .buf = buf, .len = 3 }; - - ret = i2c_transfer(state->i2c, &msg, 1); - - if (ret != 1) - printk("%s: writereg error (reg == 0x%02x, val == 0x%04x, " - "ret == %i)\n", __func__, reg, data, ret); - - return (ret != 1) ? -1 : 0; -} - -static u8 au8522_readreg(struct au8522_state *state, u16 reg) -{ - int ret; - u8 b0 [] = { reg >> 8, reg & 0xff }; - u8 b1 [] = { 0 }; - - struct i2c_msg msg [] = { - { .addr = state->config->demod_address, .flags = 0, - .buf = b0, .len = 2 }, - { .addr = state->config->demod_address, .flags = I2C_M_RD, - .buf = b1, .len = 1 } }; - - ret = i2c_transfer(state->i2c, msg, 2); - - if (ret != 2) - printk(KERN_ERR "%s: readreg error (ret == %i)\n", - __func__, ret); - return b1[0]; -} - -static int au8522_i2c_gate_ctrl(struct dvb_frontend *fe, int enable) -{ - struct au8522_state *state = fe->demodulator_priv; - - dprintk("%s(%d)\n", __func__, enable); - - if (enable) - return au8522_writereg(state, 0x106, 1); - else - return au8522_writereg(state, 0x106, 0); -} - -struct mse2snr_tab { - u16 val; - u16 data; -}; - -/* VSB SNR lookup table */ -static struct mse2snr_tab vsb_mse2snr_tab[] = { - { 0, 270 }, - { 2, 250 }, - { 3, 240 }, - { 5, 230 }, - { 7, 220 }, - { 9, 210 }, - { 12, 200 }, - { 13, 195 }, - { 15, 190 }, - { 17, 185 }, - { 19, 180 }, - { 21, 175 }, - { 24, 170 }, - { 27, 165 }, - { 31, 160 }, - { 32, 158 }, - { 33, 156 }, - { 36, 152 }, - { 37, 150 }, - { 39, 148 }, - { 40, 146 }, - { 41, 144 }, - { 43, 142 }, - { 44, 140 }, - { 48, 135 }, - { 50, 130 }, - { 43, 142 }, - { 53, 125 }, - { 56, 120 }, - { 256, 115 }, -}; - -/* QAM64 SNR lookup table */ -static struct mse2snr_tab qam64_mse2snr_tab[] = { - { 15, 0 }, - { 16, 290 }, - { 17, 288 }, - { 18, 286 }, - { 19, 284 }, - { 20, 282 }, - { 21, 281 }, - { 22, 279 }, - { 23, 277 }, - { 24, 275 }, - { 25, 273 }, - { 26, 271 }, - { 27, 269 }, - { 28, 268 }, - { 29, 266 }, - { 30, 264 }, - { 31, 262 }, - { 32, 260 }, - { 33, 259 }, - { 34, 258 }, - { 35, 256 }, - { 36, 255 }, - { 37, 254 }, - { 38, 252 }, - { 39, 251 }, - { 40, 250 }, - { 41, 249 }, - { 42, 248 }, - { 43, 246 }, - { 44, 245 }, - { 45, 244 }, - { 46, 242 }, - { 47, 241 }, - { 48, 240 }, - { 50, 239 }, - { 51, 238 }, - { 53, 237 }, - { 54, 236 }, - { 56, 235 }, - { 57, 234 }, - { 59, 233 }, - { 60, 232 }, - { 62, 231 }, - { 63, 230 }, - { 65, 229 }, - { 67, 228 }, - { 68, 227 }, - { 70, 226 }, - { 71, 225 }, - { 73, 224 }, - { 74, 223 }, - { 76, 222 }, - { 78, 221 }, - { 80, 220 }, - { 82, 219 }, - { 85, 218 }, - { 88, 217 }, - { 90, 216 }, - { 92, 215 }, - { 93, 214 }, - { 94, 212 }, - { 95, 211 }, - { 97, 210 }, - { 99, 209 }, - { 101, 208 }, - { 102, 207 }, - { 104, 206 }, - { 107, 205 }, - { 111, 204 }, - { 114, 203 }, - { 118, 202 }, - { 122, 201 }, - { 125, 200 }, - { 128, 199 }, - { 130, 198 }, - { 132, 197 }, - { 256, 190 }, -}; - -/* QAM256 SNR lookup table */ -static struct mse2snr_tab qam256_mse2snr_tab[] = { - { 16, 0 }, - { 17, 400 }, - { 18, 398 }, - { 19, 396 }, - { 20, 394 }, - { 21, 392 }, - { 22, 390 }, - { 23, 388 }, - { 24, 386 }, - { 25, 384 }, - { 26, 382 }, - { 27, 380 }, - { 28, 379 }, - { 29, 378 }, - { 30, 377 }, - { 31, 376 }, - { 32, 375 }, - { 33, 374 }, - { 34, 373 }, - { 35, 372 }, - { 36, 371 }, - { 37, 370 }, - { 38, 362 }, - { 39, 354 }, - { 40, 346 }, - { 41, 338 }, - { 42, 330 }, - { 43, 328 }, - { 44, 326 }, - { 45, 324 }, - { 46, 322 }, - { 47, 320 }, - { 48, 319 }, - { 49, 318 }, - { 50, 317 }, - { 51, 316 }, - { 52, 315 }, - { 53, 314 }, - { 54, 313 }, - { 55, 312 }, - { 56, 311 }, - { 57, 310 }, - { 58, 308 }, - { 59, 306 }, - { 60, 304 }, - { 61, 302 }, - { 62, 300 }, - { 63, 298 }, - { 65, 295 }, - { 68, 294 }, - { 70, 293 }, - { 73, 292 }, - { 76, 291 }, - { 78, 290 }, - { 79, 289 }, - { 81, 288 }, - { 82, 287 }, - { 83, 286 }, - { 84, 285 }, - { 85, 284 }, - { 86, 283 }, - { 88, 282 }, - { 89, 281 }, - { 256, 280 }, -}; - -static int au8522_mse2snr_lookup(struct mse2snr_tab *tab, int sz, int mse, - u16 *snr) -{ - int i, ret = -EINVAL; - dprintk("%s()\n", __func__); - - for (i = 0; i < sz; i++) { - if (mse < tab[i].val) { - *snr = tab[i].data; - ret = 0; - break; - } - } - dprintk("%s() snr=%d\n", __func__, *snr); - return ret; -} - -static int au8522_set_if(struct dvb_frontend *fe, enum au8522_if_freq if_freq) -{ - struct au8522_state *state = fe->demodulator_priv; - u8 r0b5, r0b6, r0b7; - char *ifmhz; - - switch (if_freq) { - case AU8522_IF_3_25MHZ: - ifmhz = "3.25"; - r0b5 = 0x00; - r0b6 = 0x3d; - r0b7 = 0xa0; - break; - case AU8522_IF_4MHZ: - ifmhz = "4.00"; - r0b5 = 0x00; - r0b6 = 0x4b; - r0b7 = 0xd9; - break; - case AU8522_IF_6MHZ: - ifmhz = "6.00"; - r0b5 = 0xfb; - r0b6 = 0x8e; - r0b7 = 0x39; - break; - default: - dprintk("%s() IF Frequency not supported\n", __func__); - return -EINVAL; - } - dprintk("%s() %s MHz\n", __func__, ifmhz); - au8522_writereg(state, 0x80b5, r0b5); - au8522_writereg(state, 0x80b6, r0b6); - au8522_writereg(state, 0x80b7, r0b7); - - return 0; -} - -/* VSB Modulation table */ -static struct { - u16 reg; - u16 data; -} VSB_mod_tab[] = { - { 0x8090, 0x84 }, - { 0x4092, 0x11 }, - { 0x2005, 0x00 }, - { 0x8091, 0x80 }, - { 0x80a3, 0x0c }, - { 0x80a4, 0xe8 }, - { 0x8081, 0xc4 }, - { 0x80a5, 0x40 }, - { 0x80a7, 0x40 }, - { 0x80a6, 0x67 }, - { 0x8262, 0x20 }, - { 0x821c, 0x30 }, - { 0x80d8, 0x1a }, - { 0x8227, 0xa0 }, - { 0x8121, 0xff }, - { 0x80a8, 0xf0 }, - { 0x80a9, 0x05 }, - { 0x80aa, 0x77 }, - { 0x80ab, 0xf0 }, - { 0x80ac, 0x05 }, - { 0x80ad, 0x77 }, - { 0x80ae, 0x41 }, - { 0x80af, 0x66 }, - { 0x821b, 0xcc }, - { 0x821d, 0x80 }, - { 0x80a4, 0xe8 }, - { 0x8231, 0x13 }, -}; - -/* QAM Modulation table */ -static struct { - u16 reg; - u16 data; -} QAM_mod_tab[] = { - { 0x80a3, 0x09 }, - { 0x80a4, 0x00 }, - { 0x8081, 0xc4 }, - { 0x80a5, 0x40 }, - { 0x80aa, 0x77 }, - { 0x80ad, 0x77 }, - { 0x80a6, 0x67 }, - { 0x8262, 0x20 }, - { 0x821c, 0x30 }, - { 0x80b8, 0x3e }, - { 0x80b9, 0xf0 }, - { 0x80ba, 0x01 }, - { 0x80bb, 0x18 }, - { 0x80bc, 0x50 }, - { 0x80bd, 0x00 }, - { 0x80be, 0xea }, - { 0x80bf, 0xef }, - { 0x80c0, 0xfc }, - { 0x80c1, 0xbd }, - { 0x80c2, 0x1f }, - { 0x80c3, 0xfc }, - { 0x80c4, 0xdd }, - { 0x80c5, 0xaf }, - { 0x80c6, 0x00 }, - { 0x80c7, 0x38 }, - { 0x80c8, 0x30 }, - { 0x80c9, 0x05 }, - { 0x80ca, 0x4a }, - { 0x80cb, 0xd0 }, - { 0x80cc, 0x01 }, - { 0x80cd, 0xd9 }, - { 0x80ce, 0x6f }, - { 0x80cf, 0xf9 }, - { 0x80d0, 0x70 }, - { 0x80d1, 0xdf }, - { 0x80d2, 0xf7 }, - { 0x80d3, 0xc2 }, - { 0x80d4, 0xdf }, - { 0x80d5, 0x02 }, - { 0x80d6, 0x9a }, - { 0x80d7, 0xd0 }, - { 0x8250, 0x0d }, - { 0x8251, 0xcd }, - { 0x8252, 0xe0 }, - { 0x8253, 0x05 }, - { 0x8254, 0xa7 }, - { 0x8255, 0xff }, - { 0x8256, 0xed }, - { 0x8257, 0x5b }, - { 0x8258, 0xae }, - { 0x8259, 0xe6 }, - { 0x825a, 0x3d }, - { 0x825b, 0x0f }, - { 0x825c, 0x0d }, - { 0x825d, 0xea }, - { 0x825e, 0xf2 }, - { 0x825f, 0x51 }, - { 0x8260, 0xf5 }, - { 0x8261, 0x06 }, - { 0x821a, 0x00 }, - { 0x8546, 0x40 }, - { 0x8210, 0x26 }, - { 0x8211, 0xf6 }, - { 0x8212, 0x84 }, - { 0x8213, 0x02 }, - { 0x8502, 0x01 }, - { 0x8121, 0x04 }, - { 0x8122, 0x04 }, - { 0x852e, 0x10 }, - { 0x80a4, 0xca }, - { 0x80a7, 0x40 }, - { 0x8526, 0x01 }, -}; - -static int au8522_enable_modulation(struct dvb_frontend *fe, - fe_modulation_t m) -{ - struct au8522_state *state = fe->demodulator_priv; - int i; - - dprintk("%s(0x%08x)\n", __func__, m); - - switch (m) { - case VSB_8: - dprintk("%s() VSB_8\n", __func__); - for (i = 0; i < ARRAY_SIZE(VSB_mod_tab); i++) - au8522_writereg(state, - VSB_mod_tab[i].reg, - VSB_mod_tab[i].data); - au8522_set_if(fe, state->config->vsb_if); - break; - case QAM_64: - case QAM_256: - dprintk("%s() QAM 64/256\n", __func__); - for (i = 0; i < ARRAY_SIZE(QAM_mod_tab); i++) - au8522_writereg(state, - QAM_mod_tab[i].reg, - QAM_mod_tab[i].data); - au8522_set_if(fe, state->config->qam_if); - break; - default: - dprintk("%s() Invalid modulation\n", __func__); - return -EINVAL; - } - - state->current_modulation = m; - - return 0; -} - -/* Talk to the demod, set the FEC, GUARD, QAM settings etc */ -static int au8522_set_frontend(struct dvb_frontend *fe, - struct dvb_frontend_parameters *p) -{ - struct au8522_state *state = fe->demodulator_priv; - int ret = -EINVAL; - - dprintk("%s(frequency=%d)\n", __func__, p->frequency); - - if ((state->current_frequency == p->frequency) && - (state->current_modulation == p->u.vsb.modulation)) - return 0; - - au8522_enable_modulation(fe, p->u.vsb.modulation); - - /* Allow the demod to settle */ - msleep(100); - - if (fe->ops.tuner_ops.set_params) { - if (fe->ops.i2c_gate_ctrl) - fe->ops.i2c_gate_ctrl(fe, 1); - ret = fe->ops.tuner_ops.set_params(fe, p); - if (fe->ops.i2c_gate_ctrl) - fe->ops.i2c_gate_ctrl(fe, 0); - } - - if (ret < 0) - return ret; - - state->current_frequency = p->frequency; - - return 0; -} - -/* Reset the demod hardware and reset all of the configuration registers - to a default state. */ -static int au8522_init(struct dvb_frontend *fe) -{ - struct au8522_state *state = fe->demodulator_priv; - dprintk("%s()\n", __func__); - - au8522_writereg(state, 0xa4, 1 << 5); - - au8522_i2c_gate_ctrl(fe, 1); - - return 0; -} - -static int au8522_led_gpio_enable(struct au8522_state *state, int onoff) -{ - struct au8522_led_config *led_config = state->config->led_cfg; - u8 val; - - /* bail out if we cant control an LED */ - if (!led_config || !led_config->gpio_output || - !led_config->gpio_output_enable || !led_config->gpio_output_disable) - return 0; - - val = au8522_readreg(state, 0x4000 | - (led_config->gpio_output & ~0xc000)); - if (onoff) { - /* enable GPIO output */ - val &= ~((led_config->gpio_output_enable >> 8) & 0xff); - val |= (led_config->gpio_output_enable & 0xff); - } else { - /* disable GPIO output */ - val &= ~((led_config->gpio_output_disable >> 8) & 0xff); - val |= (led_config->gpio_output_disable & 0xff); - } - return au8522_writereg(state, 0x8000 | - (led_config->gpio_output & ~0xc000), val); -} - -/* led = 0 | off - * led = 1 | signal ok - * led = 2 | signal strong - * led < 0 | only light led if leds are currently off - */ -static int au8522_led_ctrl(struct au8522_state *state, int led) -{ - struct au8522_led_config *led_config = state->config->led_cfg; - int i, ret = 0; - - /* bail out if we cant control an LED */ - if (!led_config || !led_config->gpio_leds || - !led_config->num_led_states || !led_config->led_states) - return 0; - - if (led < 0) { - /* if LED is already lit, then leave it as-is */ - if (state->led_state) - return 0; - else - led *= -1; - } - - /* toggle LED if changing state */ - if (state->led_state != led) { - u8 val; - - dprintk("%s: %d\n", __func__, led); - - au8522_led_gpio_enable(state, 1); - - val = au8522_readreg(state, 0x4000 | - (led_config->gpio_leds & ~0xc000)); - - /* start with all leds off */ - for (i = 0; i < led_config->num_led_states; i++) - val &= ~led_config->led_states[i]; - - /* set selected LED state */ - if (led < led_config->num_led_states) - val |= led_config->led_states[led]; - else if (led_config->num_led_states) - val |= - led_config->led_states[led_config->num_led_states - 1]; - - ret = au8522_writereg(state, 0x8000 | - (led_config->gpio_leds & ~0xc000), val); - if (ret < 0) - return ret; - - state->led_state = led; - - if (led == 0) - au8522_led_gpio_enable(state, 0); - } - - return 0; -} - -static int au8522_sleep(struct dvb_frontend *fe) -{ - struct au8522_state *state = fe->demodulator_priv; - dprintk("%s()\n", __func__); - - /* turn off led */ - au8522_led_ctrl(state, 0); - - state->current_frequency = 0; - - return 0; -} - -static int au8522_read_status(struct dvb_frontend *fe, fe_status_t *status) -{ - struct au8522_state *state = fe->demodulator_priv; - u8 reg; - u32 tuner_status = 0; - - *status = 0; - - if (state->current_modulation == VSB_8) { - dprintk("%s() Checking VSB_8\n", __func__); - reg = au8522_readreg(state, 0x4088); - if ((reg & 0x03) == 0x03) - *status |= FE_HAS_LOCK | FE_HAS_SYNC | FE_HAS_VITERBI; - } else { - dprintk("%s() Checking QAM\n", __func__); - reg = au8522_readreg(state, 0x4541); - if (reg & 0x80) - *status |= FE_HAS_VITERBI; - if (reg & 0x20) - *status |= FE_HAS_LOCK | FE_HAS_SYNC; - } - - switch (state->config->status_mode) { - case AU8522_DEMODLOCKING: - dprintk("%s() DEMODLOCKING\n", __func__); - if (*status & FE_HAS_VITERBI) - *status |= FE_HAS_CARRIER | FE_HAS_SIGNAL; - break; - case AU8522_TUNERLOCKING: - /* Get the tuner status */ - dprintk("%s() TUNERLOCKING\n", __func__); - if (fe->ops.tuner_ops.get_status) { - if (fe->ops.i2c_gate_ctrl) - fe->ops.i2c_gate_ctrl(fe, 1); - - fe->ops.tuner_ops.get_status(fe, &tuner_status); - - if (fe->ops.i2c_gate_ctrl) - fe->ops.i2c_gate_ctrl(fe, 0); - } - if (tuner_status) - *status |= FE_HAS_CARRIER | FE_HAS_SIGNAL; - break; - } - state->fe_status = *status; - - if (*status & FE_HAS_LOCK) - /* turn on LED, if it isn't on already */ - au8522_led_ctrl(state, -1); - else - /* turn off LED */ - au8522_led_ctrl(state, 0); - - dprintk("%s() status 0x%08x\n", __func__, *status); - - return 0; -} - -static int au8522_led_status(struct au8522_state *state, const u16 *snr) -{ - struct au8522_led_config *led_config = state->config->led_cfg; - int led; - u16 strong; - - /* bail out if we cant control an LED */ - if (!led_config) - return 0; - - if (0 == (state->fe_status & FE_HAS_LOCK)) - return au8522_led_ctrl(state, 0); - else if (state->current_modulation == QAM_256) - strong = led_config->qam256_strong; - else if (state->current_modulation == QAM_64) - strong = led_config->qam64_strong; - else /* (state->current_modulation == VSB_8) */ - strong = led_config->vsb8_strong; - - if (*snr >= strong) - led = 2; - else - led = 1; - - if ((state->led_state) && - (((strong < *snr) ? (*snr - strong) : (strong - *snr)) <= 10)) - /* snr didn't change enough to bother - * changing the color of the led */ - return 0; - - return au8522_led_ctrl(state, led); -} - -static int au8522_read_snr(struct dvb_frontend *fe, u16 *snr) -{ - struct au8522_state *state = fe->demodulator_priv; - int ret = -EINVAL; - - dprintk("%s()\n", __func__); - - if (state->current_modulation == QAM_256) - ret = au8522_mse2snr_lookup(qam256_mse2snr_tab, - ARRAY_SIZE(qam256_mse2snr_tab), - au8522_readreg(state, 0x4522), - snr); - else if (state->current_modulation == QAM_64) - ret = au8522_mse2snr_lookup(qam64_mse2snr_tab, - ARRAY_SIZE(qam64_mse2snr_tab), - au8522_readreg(state, 0x4522), - snr); - else /* VSB_8 */ - ret = au8522_mse2snr_lookup(vsb_mse2snr_tab, - ARRAY_SIZE(vsb_mse2snr_tab), - au8522_readreg(state, 0x4311), - snr); - - if (state->config->led_cfg) - au8522_led_status(state, snr); - - return ret; -} - -static int au8522_read_signal_strength(struct dvb_frontend *fe, - u16 *signal_strength) -{ - return au8522_read_snr(fe, signal_strength); -} - -static int au8522_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks) -{ - struct au8522_state *state = fe->demodulator_priv; - - if (state->current_modulation == VSB_8) - *ucblocks = au8522_readreg(state, 0x4087); - else - *ucblocks = au8522_readreg(state, 0x4543); - - return 0; -} - -static int au8522_read_ber(struct dvb_frontend *fe, u32 *ber) -{ - return au8522_read_ucblocks(fe, ber); -} - -static int au8522_get_frontend(struct dvb_frontend *fe, - struct dvb_frontend_parameters *p) -{ - struct au8522_state *state = fe->demodulator_priv; - - p->frequency = state->current_frequency; - p->u.vsb.modulation = state->current_modulation; - - return 0; -} - -static int au8522_get_tune_settings(struct dvb_frontend *fe, - struct dvb_frontend_tune_settings *tune) -{ - tune->min_delay_ms = 1000; - return 0; -} - -static void au8522_release(struct dvb_frontend *fe) -{ - struct au8522_state *state = fe->demodulator_priv; - kfree(state); -} - -static struct dvb_frontend_ops au8522_ops; - -struct dvb_frontend *au8522_attach(const struct au8522_config *config, - struct i2c_adapter *i2c) -{ - struct au8522_state *state = NULL; - - /* allocate memory for the internal state */ - state = kmalloc(sizeof(struct au8522_state), GFP_KERNEL); - if (state == NULL) - goto error; - - /* setup the state */ - state->config = config; - state->i2c = i2c; - /* create dvb_frontend */ - memcpy(&state->frontend.ops, &au8522_ops, - sizeof(struct dvb_frontend_ops)); - state->frontend.demodulator_priv = state; - - if (au8522_init(&state->frontend) != 0) { - printk(KERN_ERR "%s: Failed to initialize correctly\n", - __func__); - goto error; - } - - /* Note: Leaving the I2C gate open here. */ - au8522_i2c_gate_ctrl(&state->frontend, 1); - - return &state->frontend; - -error: - kfree(state); - return NULL; -} -EXPORT_SYMBOL(au8522_attach); - -static struct dvb_frontend_ops au8522_ops = { - - .info = { - .name = "Auvitek AU8522 QAM/8VSB Frontend", - .type = FE_ATSC, - .frequency_min = 54000000, - .frequency_max = 858000000, - .frequency_stepsize = 62500, - .caps = FE_CAN_QAM_64 | FE_CAN_QAM_256 | FE_CAN_8VSB - }, - - .init = au8522_init, - .sleep = au8522_sleep, - .i2c_gate_ctrl = au8522_i2c_gate_ctrl, - .set_frontend = au8522_set_frontend, - .get_frontend = au8522_get_frontend, - .get_tune_settings = au8522_get_tune_settings, - .read_status = au8522_read_status, - .read_ber = au8522_read_ber, - .read_signal_strength = au8522_read_signal_strength, - .read_snr = au8522_read_snr, - .read_ucblocks = au8522_read_ucblocks, - .release = au8522_release, -}; - -module_param(debug, int, 0644); -MODULE_PARM_DESC(debug, "Enable verbose debug messages"); - -MODULE_DESCRIPTION("Auvitek AU8522 QAM-B/ATSC Demodulator driver"); -MODULE_AUTHOR("Steven Toth"); -MODULE_LICENSE("GPL"); diff --git a/drivers/media/dvb/frontends/au8522_dig.c b/drivers/media/dvb/frontends/au8522_dig.c new file mode 100644 index 000000000000..eabf9a68e7ec --- /dev/null +++ b/drivers/media/dvb/frontends/au8522_dig.c @@ -0,0 +1,874 @@ +/* + Auvitek AU8522 QAM/8VSB demodulator driver + + Copyright (C) 2008 Steven Toth + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + +*/ + +#include +#include +#include +#include +#include +#include +#include "dvb_frontend.h" +#include "au8522.h" + +struct au8522_state { + + struct i2c_adapter *i2c; + + /* configuration settings */ + const struct au8522_config *config; + + struct dvb_frontend frontend; + + u32 current_frequency; + fe_modulation_t current_modulation; + + u32 fe_status; + unsigned int led_state; +}; + +static int debug; + +#define dprintk(arg...) do { \ + if (debug) \ + printk(arg); \ + } while (0) + +/* 16 bit registers, 8 bit values */ +static int au8522_writereg(struct au8522_state *state, u16 reg, u8 data) +{ + int ret; + u8 buf [] = { reg >> 8, reg & 0xff, data }; + + struct i2c_msg msg = { .addr = state->config->demod_address, + .flags = 0, .buf = buf, .len = 3 }; + + ret = i2c_transfer(state->i2c, &msg, 1); + + if (ret != 1) + printk("%s: writereg error (reg == 0x%02x, val == 0x%04x, " + "ret == %i)\n", __func__, reg, data, ret); + + return (ret != 1) ? -1 : 0; +} + +static u8 au8522_readreg(struct au8522_state *state, u16 reg) +{ + int ret; + u8 b0 [] = { reg >> 8, reg & 0xff }; + u8 b1 [] = { 0 }; + + struct i2c_msg msg [] = { + { .addr = state->config->demod_address, .flags = 0, + .buf = b0, .len = 2 }, + { .addr = state->config->demod_address, .flags = I2C_M_RD, + .buf = b1, .len = 1 } }; + + ret = i2c_transfer(state->i2c, msg, 2); + + if (ret != 2) + printk(KERN_ERR "%s: readreg error (ret == %i)\n", + __func__, ret); + return b1[0]; +} + +static int au8522_i2c_gate_ctrl(struct dvb_frontend *fe, int enable) +{ + struct au8522_state *state = fe->demodulator_priv; + + dprintk("%s(%d)\n", __func__, enable); + + if (enable) + return au8522_writereg(state, 0x106, 1); + else + return au8522_writereg(state, 0x106, 0); +} + +struct mse2snr_tab { + u16 val; + u16 data; +}; + +/* VSB SNR lookup table */ +static struct mse2snr_tab vsb_mse2snr_tab[] = { + { 0, 270 }, + { 2, 250 }, + { 3, 240 }, + { 5, 230 }, + { 7, 220 }, + { 9, 210 }, + { 12, 200 }, + { 13, 195 }, + { 15, 190 }, + { 17, 185 }, + { 19, 180 }, + { 21, 175 }, + { 24, 170 }, + { 27, 165 }, + { 31, 160 }, + { 32, 158 }, + { 33, 156 }, + { 36, 152 }, + { 37, 150 }, + { 39, 148 }, + { 40, 146 }, + { 41, 144 }, + { 43, 142 }, + { 44, 140 }, + { 48, 135 }, + { 50, 130 }, + { 43, 142 }, + { 53, 125 }, + { 56, 120 }, + { 256, 115 }, +}; + +/* QAM64 SNR lookup table */ +static struct mse2snr_tab qam64_mse2snr_tab[] = { + { 15, 0 }, + { 16, 290 }, + { 17, 288 }, + { 18, 286 }, + { 19, 284 }, + { 20, 282 }, + { 21, 281 }, + { 22, 279 }, + { 23, 277 }, + { 24, 275 }, + { 25, 273 }, + { 26, 271 }, + { 27, 269 }, + { 28, 268 }, + { 29, 266 }, + { 30, 264 }, + { 31, 262 }, + { 32, 260 }, + { 33, 259 }, + { 34, 258 }, + { 35, 256 }, + { 36, 255 }, + { 37, 254 }, + { 38, 252 }, + { 39, 251 }, + { 40, 250 }, + { 41, 249 }, + { 42, 248 }, + { 43, 246 }, + { 44, 245 }, + { 45, 244 }, + { 46, 242 }, + { 47, 241 }, + { 48, 240 }, + { 50, 239 }, + { 51, 238 }, + { 53, 237 }, + { 54, 236 }, + { 56, 235 }, + { 57, 234 }, + { 59, 233 }, + { 60, 232 }, + { 62, 231 }, + { 63, 230 }, + { 65, 229 }, + { 67, 228 }, + { 68, 227 }, + { 70, 226 }, + { 71, 225 }, + { 73, 224 }, + { 74, 223 }, + { 76, 222 }, + { 78, 221 }, + { 80, 220 }, + { 82, 219 }, + { 85, 218 }, + { 88, 217 }, + { 90, 216 }, + { 92, 215 }, + { 93, 214 }, + { 94, 212 }, + { 95, 211 }, + { 97, 210 }, + { 99, 209 }, + { 101, 208 }, + { 102, 207 }, + { 104, 206 }, + { 107, 205 }, + { 111, 204 }, + { 114, 203 }, + { 118, 202 }, + { 122, 201 }, + { 125, 200 }, + { 128, 199 }, + { 130, 198 }, + { 132, 197 }, + { 256, 190 }, +}; + +/* QAM256 SNR lookup table */ +static struct mse2snr_tab qam256_mse2snr_tab[] = { + { 16, 0 }, + { 17, 400 }, + { 18, 398 }, + { 19, 396 }, + { 20, 394 }, + { 21, 392 }, + { 22, 390 }, + { 23, 388 }, + { 24, 386 }, + { 25, 384 }, + { 26, 382 }, + { 27, 380 }, + { 28, 379 }, + { 29, 378 }, + { 30, 377 }, + { 31, 376 }, + { 32, 375 }, + { 33, 374 }, + { 34, 373 }, + { 35, 372 }, + { 36, 371 }, + { 37, 370 }, + { 38, 362 }, + { 39, 354 }, + { 40, 346 }, + { 41, 338 }, + { 42, 330 }, + { 43, 328 }, + { 44, 326 }, + { 45, 324 }, + { 46, 322 }, + { 47, 320 }, + { 48, 319 }, + { 49, 318 }, + { 50, 317 }, + { 51, 316 }, + { 52, 315 }, + { 53, 314 }, + { 54, 313 }, + { 55, 312 }, + { 56, 311 }, + { 57, 310 }, + { 58, 308 }, + { 59, 306 }, + { 60, 304 }, + { 61, 302 }, + { 62, 300 }, + { 63, 298 }, + { 65, 295 }, + { 68, 294 }, + { 70, 293 }, + { 73, 292 }, + { 76, 291 }, + { 78, 290 }, + { 79, 289 }, + { 81, 288 }, + { 82, 287 }, + { 83, 286 }, + { 84, 285 }, + { 85, 284 }, + { 86, 283 }, + { 88, 282 }, + { 89, 281 }, + { 256, 280 }, +}; + +static int au8522_mse2snr_lookup(struct mse2snr_tab *tab, int sz, int mse, + u16 *snr) +{ + int i, ret = -EINVAL; + dprintk("%s()\n", __func__); + + for (i = 0; i < sz; i++) { + if (mse < tab[i].val) { + *snr = tab[i].data; + ret = 0; + break; + } + } + dprintk("%s() snr=%d\n", __func__, *snr); + return ret; +} + +static int au8522_set_if(struct dvb_frontend *fe, enum au8522_if_freq if_freq) +{ + struct au8522_state *state = fe->demodulator_priv; + u8 r0b5, r0b6, r0b7; + char *ifmhz; + + switch (if_freq) { + case AU8522_IF_3_25MHZ: + ifmhz = "3.25"; + r0b5 = 0x00; + r0b6 = 0x3d; + r0b7 = 0xa0; + break; + case AU8522_IF_4MHZ: + ifmhz = "4.00"; + r0b5 = 0x00; + r0b6 = 0x4b; + r0b7 = 0xd9; + break; + case AU8522_IF_6MHZ: + ifmhz = "6.00"; + r0b5 = 0xfb; + r0b6 = 0x8e; + r0b7 = 0x39; + break; + default: + dprintk("%s() IF Frequency not supported\n", __func__); + return -EINVAL; + } + dprintk("%s() %s MHz\n", __func__, ifmhz); + au8522_writereg(state, 0x80b5, r0b5); + au8522_writereg(state, 0x80b6, r0b6); + au8522_writereg(state, 0x80b7, r0b7); + + return 0; +} + +/* VSB Modulation table */ +static struct { + u16 reg; + u16 data; +} VSB_mod_tab[] = { + { 0x8090, 0x84 }, + { 0x4092, 0x11 }, + { 0x2005, 0x00 }, + { 0x8091, 0x80 }, + { 0x80a3, 0x0c }, + { 0x80a4, 0xe8 }, + { 0x8081, 0xc4 }, + { 0x80a5, 0x40 }, + { 0x80a7, 0x40 }, + { 0x80a6, 0x67 }, + { 0x8262, 0x20 }, + { 0x821c, 0x30 }, + { 0x80d8, 0x1a }, + { 0x8227, 0xa0 }, + { 0x8121, 0xff }, + { 0x80a8, 0xf0 }, + { 0x80a9, 0x05 }, + { 0x80aa, 0x77 }, + { 0x80ab, 0xf0 }, + { 0x80ac, 0x05 }, + { 0x80ad, 0x77 }, + { 0x80ae, 0x41 }, + { 0x80af, 0x66 }, + { 0x821b, 0xcc }, + { 0x821d, 0x80 }, + { 0x80a4, 0xe8 }, + { 0x8231, 0x13 }, +}; + +/* QAM Modulation table */ +static struct { + u16 reg; + u16 data; +} QAM_mod_tab[] = { + { 0x80a3, 0x09 }, + { 0x80a4, 0x00 }, + { 0x8081, 0xc4 }, + { 0x80a5, 0x40 }, + { 0x80aa, 0x77 }, + { 0x80ad, 0x77 }, + { 0x80a6, 0x67 }, + { 0x8262, 0x20 }, + { 0x821c, 0x30 }, + { 0x80b8, 0x3e }, + { 0x80b9, 0xf0 }, + { 0x80ba, 0x01 }, + { 0x80bb, 0x18 }, + { 0x80bc, 0x50 }, + { 0x80bd, 0x00 }, + { 0x80be, 0xea }, + { 0x80bf, 0xef }, + { 0x80c0, 0xfc }, + { 0x80c1, 0xbd }, + { 0x80c2, 0x1f }, + { 0x80c3, 0xfc }, + { 0x80c4, 0xdd }, + { 0x80c5, 0xaf }, + { 0x80c6, 0x00 }, + { 0x80c7, 0x38 }, + { 0x80c8, 0x30 }, + { 0x80c9, 0x05 }, + { 0x80ca, 0x4a }, + { 0x80cb, 0xd0 }, + { 0x80cc, 0x01 }, + { 0x80cd, 0xd9 }, + { 0x80ce, 0x6f }, + { 0x80cf, 0xf9 }, + { 0x80d0, 0x70 }, + { 0x80d1, 0xdf }, + { 0x80d2, 0xf7 }, + { 0x80d3, 0xc2 }, + { 0x80d4, 0xdf }, + { 0x80d5, 0x02 }, + { 0x80d6, 0x9a }, + { 0x80d7, 0xd0 }, + { 0x8250, 0x0d }, + { 0x8251, 0xcd }, + { 0x8252, 0xe0 }, + { 0x8253, 0x05 }, + { 0x8254, 0xa7 }, + { 0x8255, 0xff }, + { 0x8256, 0xed }, + { 0x8257, 0x5b }, + { 0x8258, 0xae }, + { 0x8259, 0xe6 }, + { 0x825a, 0x3d }, + { 0x825b, 0x0f }, + { 0x825c, 0x0d }, + { 0x825d, 0xea }, + { 0x825e, 0xf2 }, + { 0x825f, 0x51 }, + { 0x8260, 0xf5 }, + { 0x8261, 0x06 }, + { 0x821a, 0x00 }, + { 0x8546, 0x40 }, + { 0x8210, 0x26 }, + { 0x8211, 0xf6 }, + { 0x8212, 0x84 }, + { 0x8213, 0x02 }, + { 0x8502, 0x01 }, + { 0x8121, 0x04 }, + { 0x8122, 0x04 }, + { 0x852e, 0x10 }, + { 0x80a4, 0xca }, + { 0x80a7, 0x40 }, + { 0x8526, 0x01 }, +}; + +static int au8522_enable_modulation(struct dvb_frontend *fe, + fe_modulation_t m) +{ + struct au8522_state *state = fe->demodulator_priv; + int i; + + dprintk("%s(0x%08x)\n", __func__, m); + + switch (m) { + case VSB_8: + dprintk("%s() VSB_8\n", __func__); + for (i = 0; i < ARRAY_SIZE(VSB_mod_tab); i++) + au8522_writereg(state, + VSB_mod_tab[i].reg, + VSB_mod_tab[i].data); + au8522_set_if(fe, state->config->vsb_if); + break; + case QAM_64: + case QAM_256: + dprintk("%s() QAM 64/256\n", __func__); + for (i = 0; i < ARRAY_SIZE(QAM_mod_tab); i++) + au8522_writereg(state, + QAM_mod_tab[i].reg, + QAM_mod_tab[i].data); + au8522_set_if(fe, state->config->qam_if); + break; + default: + dprintk("%s() Invalid modulation\n", __func__); + return -EINVAL; + } + + state->current_modulation = m; + + return 0; +} + +/* Talk to the demod, set the FEC, GUARD, QAM settings etc */ +static int au8522_set_frontend(struct dvb_frontend *fe, + struct dvb_frontend_parameters *p) +{ + struct au8522_state *state = fe->demodulator_priv; + int ret = -EINVAL; + + dprintk("%s(frequency=%d)\n", __func__, p->frequency); + + if ((state->current_frequency == p->frequency) && + (state->current_modulation == p->u.vsb.modulation)) + return 0; + + au8522_enable_modulation(fe, p->u.vsb.modulation); + + /* Allow the demod to settle */ + msleep(100); + + if (fe->ops.tuner_ops.set_params) { + if (fe->ops.i2c_gate_ctrl) + fe->ops.i2c_gate_ctrl(fe, 1); + ret = fe->ops.tuner_ops.set_params(fe, p); + if (fe->ops.i2c_gate_ctrl) + fe->ops.i2c_gate_ctrl(fe, 0); + } + + if (ret < 0) + return ret; + + state->current_frequency = p->frequency; + + return 0; +} + +/* Reset the demod hardware and reset all of the configuration registers + to a default state. */ +static int au8522_init(struct dvb_frontend *fe) +{ + struct au8522_state *state = fe->demodulator_priv; + dprintk("%s()\n", __func__); + + au8522_writereg(state, 0xa4, 1 << 5); + + au8522_i2c_gate_ctrl(fe, 1); + + return 0; +} + +static int au8522_led_gpio_enable(struct au8522_state *state, int onoff) +{ + struct au8522_led_config *led_config = state->config->led_cfg; + u8 val; + + /* bail out if we cant control an LED */ + if (!led_config || !led_config->gpio_output || + !led_config->gpio_output_enable || !led_config->gpio_output_disable) + return 0; + + val = au8522_readreg(state, 0x4000 | + (led_config->gpio_output & ~0xc000)); + if (onoff) { + /* enable GPIO output */ + val &= ~((led_config->gpio_output_enable >> 8) & 0xff); + val |= (led_config->gpio_output_enable & 0xff); + } else { + /* disable GPIO output */ + val &= ~((led_config->gpio_output_disable >> 8) & 0xff); + val |= (led_config->gpio_output_disable & 0xff); + } + return au8522_writereg(state, 0x8000 | + (led_config->gpio_output & ~0xc000), val); +} + +/* led = 0 | off + * led = 1 | signal ok + * led = 2 | signal strong + * led < 0 | only light led if leds are currently off + */ +static int au8522_led_ctrl(struct au8522_state *state, int led) +{ + struct au8522_led_config *led_config = state->config->led_cfg; + int i, ret = 0; + + /* bail out if we cant control an LED */ + if (!led_config || !led_config->gpio_leds || + !led_config->num_led_states || !led_config->led_states) + return 0; + + if (led < 0) { + /* if LED is already lit, then leave it as-is */ + if (state->led_state) + return 0; + else + led *= -1; + } + + /* toggle LED if changing state */ + if (state->led_state != led) { + u8 val; + + dprintk("%s: %d\n", __func__, led); + + au8522_led_gpio_enable(state, 1); + + val = au8522_readreg(state, 0x4000 | + (led_config->gpio_leds & ~0xc000)); + + /* start with all leds off */ + for (i = 0; i < led_config->num_led_states; i++) + val &= ~led_config->led_states[i]; + + /* set selected LED state */ + if (led < led_config->num_led_states) + val |= led_config->led_states[led]; + else if (led_config->num_led_states) + val |= + led_config->led_states[led_config->num_led_states - 1]; + + ret = au8522_writereg(state, 0x8000 | + (led_config->gpio_leds & ~0xc000), val); + if (ret < 0) + return ret; + + state->led_state = led; + + if (led == 0) + au8522_led_gpio_enable(state, 0); + } + + return 0; +} + +static int au8522_sleep(struct dvb_frontend *fe) +{ + struct au8522_state *state = fe->demodulator_priv; + dprintk("%s()\n", __func__); + + /* turn off led */ + au8522_led_ctrl(state, 0); + + state->current_frequency = 0; + + return 0; +} + +static int au8522_read_status(struct dvb_frontend *fe, fe_status_t *status) +{ + struct au8522_state *state = fe->demodulator_priv; + u8 reg; + u32 tuner_status = 0; + + *status = 0; + + if (state->current_modulation == VSB_8) { + dprintk("%s() Checking VSB_8\n", __func__); + reg = au8522_readreg(state, 0x4088); + if ((reg & 0x03) == 0x03) + *status |= FE_HAS_LOCK | FE_HAS_SYNC | FE_HAS_VITERBI; + } else { + dprintk("%s() Checking QAM\n", __func__); + reg = au8522_readreg(state, 0x4541); + if (reg & 0x80) + *status |= FE_HAS_VITERBI; + if (reg & 0x20) + *status |= FE_HAS_LOCK | FE_HAS_SYNC; + } + + switch (state->config->status_mode) { + case AU8522_DEMODLOCKING: + dprintk("%s() DEMODLOCKING\n", __func__); + if (*status & FE_HAS_VITERBI) + *status |= FE_HAS_CARRIER | FE_HAS_SIGNAL; + break; + case AU8522_TUNERLOCKING: + /* Get the tuner status */ + dprintk("%s() TUNERLOCKING\n", __func__); + if (fe->ops.tuner_ops.get_status) { + if (fe->ops.i2c_gate_ctrl) + fe->ops.i2c_gate_ctrl(fe, 1); + + fe->ops.tuner_ops.get_status(fe, &tuner_status); + + if (fe->ops.i2c_gate_ctrl) + fe->ops.i2c_gate_ctrl(fe, 0); + } + if (tuner_status) + *status |= FE_HAS_CARRIER | FE_HAS_SIGNAL; + break; + } + state->fe_status = *status; + + if (*status & FE_HAS_LOCK) + /* turn on LED, if it isn't on already */ + au8522_led_ctrl(state, -1); + else + /* turn off LED */ + au8522_led_ctrl(state, 0); + + dprintk("%s() status 0x%08x\n", __func__, *status); + + return 0; +} + +static int au8522_led_status(struct au8522_state *state, const u16 *snr) +{ + struct au8522_led_config *led_config = state->config->led_cfg; + int led; + u16 strong; + + /* bail out if we cant control an LED */ + if (!led_config) + return 0; + + if (0 == (state->fe_status & FE_HAS_LOCK)) + return au8522_led_ctrl(state, 0); + else if (state->current_modulation == QAM_256) + strong = led_config->qam256_strong; + else if (state->current_modulation == QAM_64) + strong = led_config->qam64_strong; + else /* (state->current_modulation == VSB_8) */ + strong = led_config->vsb8_strong; + + if (*snr >= strong) + led = 2; + else + led = 1; + + if ((state->led_state) && + (((strong < *snr) ? (*snr - strong) : (strong - *snr)) <= 10)) + /* snr didn't change enough to bother + * changing the color of the led */ + return 0; + + return au8522_led_ctrl(state, led); +} + +static int au8522_read_snr(struct dvb_frontend *fe, u16 *snr) +{ + struct au8522_state *state = fe->demodulator_priv; + int ret = -EINVAL; + + dprintk("%s()\n", __func__); + + if (state->current_modulation == QAM_256) + ret = au8522_mse2snr_lookup(qam256_mse2snr_tab, + ARRAY_SIZE(qam256_mse2snr_tab), + au8522_readreg(state, 0x4522), + snr); + else if (state->current_modulation == QAM_64) + ret = au8522_mse2snr_lookup(qam64_mse2snr_tab, + ARRAY_SIZE(qam64_mse2snr_tab), + au8522_readreg(state, 0x4522), + snr); + else /* VSB_8 */ + ret = au8522_mse2snr_lookup(vsb_mse2snr_tab, + ARRAY_SIZE(vsb_mse2snr_tab), + au8522_readreg(state, 0x4311), + snr); + + if (state->config->led_cfg) + au8522_led_status(state, snr); + + return ret; +} + +static int au8522_read_signal_strength(struct dvb_frontend *fe, + u16 *signal_strength) +{ + return au8522_read_snr(fe, signal_strength); +} + +static int au8522_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks) +{ + struct au8522_state *state = fe->demodulator_priv; + + if (state->current_modulation == VSB_8) + *ucblocks = au8522_readreg(state, 0x4087); + else + *ucblocks = au8522_readreg(state, 0x4543); + + return 0; +} + +static int au8522_read_ber(struct dvb_frontend *fe, u32 *ber) +{ + return au8522_read_ucblocks(fe, ber); +} + +static int au8522_get_frontend(struct dvb_frontend *fe, + struct dvb_frontend_parameters *p) +{ + struct au8522_state *state = fe->demodulator_priv; + + p->frequency = state->current_frequency; + p->u.vsb.modulation = state->current_modulation; + + return 0; +} + +static int au8522_get_tune_settings(struct dvb_frontend *fe, + struct dvb_frontend_tune_settings *tune) +{ + tune->min_delay_ms = 1000; + return 0; +} + +static void au8522_release(struct dvb_frontend *fe) +{ + struct au8522_state *state = fe->demodulator_priv; + kfree(state); +} + +static struct dvb_frontend_ops au8522_ops; + +struct dvb_frontend *au8522_attach(const struct au8522_config *config, + struct i2c_adapter *i2c) +{ + struct au8522_state *state = NULL; + + /* allocate memory for the internal state */ + state = kmalloc(sizeof(struct au8522_state), GFP_KERNEL); + if (state == NULL) + goto error; + + /* setup the state */ + state->config = config; + state->i2c = i2c; + /* create dvb_frontend */ + memcpy(&state->frontend.ops, &au8522_ops, + sizeof(struct dvb_frontend_ops)); + state->frontend.demodulator_priv = state; + + if (au8522_init(&state->frontend) != 0) { + printk(KERN_ERR "%s: Failed to initialize correctly\n", + __func__); + goto error; + } + + /* Note: Leaving the I2C gate open here. */ + au8522_i2c_gate_ctrl(&state->frontend, 1); + + return &state->frontend; + +error: + kfree(state); + return NULL; +} +EXPORT_SYMBOL(au8522_attach); + +static struct dvb_frontend_ops au8522_ops = { + + .info = { + .name = "Auvitek AU8522 QAM/8VSB Frontend", + .type = FE_ATSC, + .frequency_min = 54000000, + .frequency_max = 858000000, + .frequency_stepsize = 62500, + .caps = FE_CAN_QAM_64 | FE_CAN_QAM_256 | FE_CAN_8VSB + }, + + .init = au8522_init, + .sleep = au8522_sleep, + .i2c_gate_ctrl = au8522_i2c_gate_ctrl, + .set_frontend = au8522_set_frontend, + .get_frontend = au8522_get_frontend, + .get_tune_settings = au8522_get_tune_settings, + .read_status = au8522_read_status, + .read_ber = au8522_read_ber, + .read_signal_strength = au8522_read_signal_strength, + .read_snr = au8522_read_snr, + .read_ucblocks = au8522_read_ucblocks, + .release = au8522_release, +}; + +module_param(debug, int, 0644); +MODULE_PARM_DESC(debug, "Enable verbose debug messages"); + +MODULE_DESCRIPTION("Auvitek AU8522 QAM-B/ATSC Demodulator driver"); +MODULE_AUTHOR("Steven Toth"); +MODULE_LICENSE("GPL");