From 0a4df239af50650fdcf6bd4911a2f18156c2c9f0 Mon Sep 17 00:00:00 2001 From: Gianluca Gennari Date: Thu, 5 Apr 2012 12:47:19 -0300 Subject: [PATCH] [media] af9033: implement get_frontend Implement the get_frontend function. The code is derived from the old af9033 driver by Antti Palosaari. Signed-off-by: Gianluca Gennari Signed-off-by: Antti Palosaari Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb/frontends/af9033.c | 133 +++++++++++++++++++++++++++ 1 file changed, 133 insertions(+) diff --git a/drivers/media/dvb/frontends/af9033.c b/drivers/media/dvb/frontends/af9033.c index 5fadee79b325..da91155b8a26 100644 --- a/drivers/media/dvb/frontends/af9033.c +++ b/drivers/media/dvb/frontends/af9033.c @@ -26,6 +26,7 @@ struct af9033_state { struct dvb_frontend fe; struct af9033_config cfg; + u32 frequency; u32 bandwidth_hz; bool ts_mode_parallel; bool ts_mode_serial; @@ -406,6 +407,8 @@ static int af9033_set_frontend(struct dvb_frontend *fe) pr_debug("%s: frequency=%d bandwidth_hz=%d\n", __func__, c->frequency, c->bandwidth_hz); + state->frequency = c->frequency; + /* check bandwidth */ switch (c->bandwidth_hz) { case 6000000: @@ -523,6 +526,135 @@ err: return ret; } +static int af9033_get_frontend(struct dvb_frontend *fe) +{ + struct dtv_frontend_properties *p = &fe->dtv_property_cache; + struct af9033_state *state = fe->demodulator_priv; + int ret; + u8 buf[8]; + + pr_debug("%s\n", __func__); + + /* read all needed registers */ + ret = af9033_rd_regs(state, 0x80f900, buf, sizeof(buf)); + if (ret) + goto error; + + switch ((buf[0] >> 0) & 3) { + case 0: + p->transmission_mode = TRANSMISSION_MODE_2K; + break; + case 1: + p->transmission_mode = TRANSMISSION_MODE_8K; + break; + } + + switch ((buf[1] >> 0) & 3) { + case 0: + p->guard_interval = GUARD_INTERVAL_1_32; + break; + case 1: + p->guard_interval = GUARD_INTERVAL_1_16; + break; + case 2: + p->guard_interval = GUARD_INTERVAL_1_8; + break; + case 3: + p->guard_interval = GUARD_INTERVAL_1_4; + break; + } + + switch ((buf[2] >> 0) & 7) { + case 0: + p->hierarchy = HIERARCHY_NONE; + break; + case 1: + p->hierarchy = HIERARCHY_1; + break; + case 2: + p->hierarchy = HIERARCHY_2; + break; + case 3: + p->hierarchy = HIERARCHY_4; + break; + } + + switch ((buf[3] >> 0) & 3) { + case 0: + p->modulation = QPSK; + break; + case 1: + p->modulation = QAM_16; + break; + case 2: + p->modulation = QAM_64; + break; + } + + switch ((buf[4] >> 0) & 3) { + case 0: + p->bandwidth_hz = 6000000; + break; + case 1: + p->bandwidth_hz = 7000000; + break; + case 2: + p->bandwidth_hz = 8000000; + break; + } + + switch ((buf[6] >> 0) & 7) { + case 0: + p->code_rate_HP = FEC_1_2; + break; + case 1: + p->code_rate_HP = FEC_2_3; + break; + case 2: + p->code_rate_HP = FEC_3_4; + break; + case 3: + p->code_rate_HP = FEC_5_6; + break; + case 4: + p->code_rate_HP = FEC_7_8; + break; + case 5: + p->code_rate_HP = FEC_NONE; + break; + } + + switch ((buf[7] >> 0) & 7) { + case 0: + p->code_rate_LP = FEC_1_2; + break; + case 1: + p->code_rate_LP = FEC_2_3; + break; + case 2: + p->code_rate_LP = FEC_3_4; + break; + case 3: + p->code_rate_LP = FEC_5_6; + break; + case 4: + p->code_rate_LP = FEC_7_8; + break; + case 5: + p->code_rate_LP = FEC_NONE; + break; + } + + p->inversion = INVERSION_AUTO; + p->frequency = state->frequency; + +error: + if (ret) + pr_debug("%s: failed:%d\n", __func__, ret); + + return ret; +} + static int af9033_read_status(struct dvb_frontend *fe, fe_status_t *status) { struct af9033_state *state = fe->demodulator_priv; @@ -776,6 +908,7 @@ static struct dvb_frontend_ops af9033_ops = { .get_tune_settings = af9033_get_tune_settings, .set_frontend = af9033_set_frontend, + .get_frontend = af9033_get_frontend, .read_status = af9033_read_status, .read_snr = af9033_read_snr, -- 2.30.2