diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-10-07 17:49:05 +0900 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-10-07 17:49:05 +0900 |
commit | 0b8e74c6f44094189dbe78baf4101acc7570c6af (patch) | |
tree | 6440561d09fb71ba5928664604ec92f29940be6b /drivers/media/dvb-frontends/stv0288.c | |
parent | 7f60ba388f5b9dd8b0da463b394412dace3ab814 (diff) | |
parent | bd0d10498826ed150da5e4c45baf8b9c7088fb71 (diff) |
Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull media updates from Mauro Carvalho Chehab:
"The first part of the media updates for Kernel 3.7.
This series contain:
- A major tree renaming patch series: now, drivers are organized
internally by their used bus, instead of by V4L2 and/or DVB API,
providing a cleaner driver location for hybrid drivers that
implement both APIs, and allowing to cleanup the Kconfig items and
make them more intuitive for the end user;
- Media Kernel developers are typically very lazy with their duties
of keeping the MAINTAINERS entries for their drivers updated. As
now the tree is more organized, we're doing an effort to add/update
those entries for the drivers that aren't currently orphan;
- Several DVB USB drivers got moved to a new DVB USB v2 core; the new
core fixes several bugs (as the existing one that got bitroted).
Now, suspend/resume finally started to work fine (at least with
some devices - we should expect more work with regards to it);
- added multistream support for DVB-T2, and unified the API for
DVB-S2 and ISDB-S. Backward binary support is preserved;
- as usual, a few new drivers, some V4L2 core improvements and lots
of drivers improvements and fixes.
There are some points to notice on this series:
1) you should expect a trivial merge conflict on your tree, with the
removal of Documentation/feature-removal-schedule.txt: this series
would be adding two additional entries there. I opted to not
rebase it due to this recent change;
2) With regards to the PCTV 520e udev-related breakage, I opted to
fix it in a way that the patches can be backported to 3.5 even
without your firmware fix patch. This way, Greg doesn't need to
rush backporting your patch (as there are still the firmware cache
and firmware path customization issues to be addressed there).
I'll send later a patch (likely after the end of the merge window)
reverting the rest of the DRX-K async firmware request, fully
restoring its original behaviour to allow media drivers to
initialize everything serialized as before for 3.7 and upper.
3) I'm planning to work on this weekend to test the DMABUF patches
for V4L2. The patches are on my queue for several Kernel cycles,
but, up to now, there is/was no way to test the series locally.
I have some concerns about this particular changeset with regards
to security issues, and with regards to the replacement of the old
VIDIOC_OVERLAY ioctl's that is broken on modern systems, due to
GPU drivers change. The Overlay API allows direct PCI2PCI
transfers from a media capture card into the GPU framebuffer, but
its API is crappy. Also, the only existing X11 driver that
implements it requires a XV extension that is not available
anymore on modern drivers. The DMABUF can do the same thing, but
with it is promising to be a properly-designed API. If I can
successfully test this series and be happy with it, I should be
asking you to pull them next week."
* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (717 commits)
em28xx: regression fix: use DRX-K sync firmware requests on em28xx
drxk: allow loading firmware synchrousnously
em28xx: Make all em28xx extensions to be initialized asynchronously
[media] tda18271: properly report read errors in tda18271_get_id
[media] tda18271: delay IR & RF calibration until init() if delay_cal is set
[media] MAINTAINERS: add Michael Krufky as tda827x maintainer
[media] MAINTAINERS: add Michael Krufky as tda8290 maintainer
[media] MAINTAINERS: add Michael Krufky as cxusb maintainer
[media] MAINTAINERS: add Michael Krufky as lg2160 maintainer
[media] MAINTAINERS: add Michael Krufky as lgdt3305 maintainer
[media] MAINTAINERS: add Michael Krufky as mxl111sf maintainer
[media] MAINTAINERS: add Michael Krufky as mxl5007t maintainer
[media] MAINTAINERS: add Michael Krufky as tda18271 maintainer
[media] s5p-tv: Report only multi-plane capabilities in vidioc_querycap
[media] s5p-mfc: Fix misplaced return statement in s5p_mfc_suspend()
[media] exynos-gsc: Add missing static storage class specifiers
[media] exynos-gsc: Remove <linux/version.h> header file inclusion
[media] s5p-fimc: Fix incorrect condition in fimc_lite_reqbufs()
[media] s5p-tv: Fix potential NULL pointer dereference error
[media] s5k6aa: Fix possible NULL pointer dereference
...
Diffstat (limited to 'drivers/media/dvb-frontends/stv0288.c')
-rw-r--r-- | drivers/media/dvb-frontends/stv0288.c | 626 |
1 files changed, 626 insertions, 0 deletions
diff --git a/drivers/media/dvb-frontends/stv0288.c b/drivers/media/dvb-frontends/stv0288.c new file mode 100644 index 00000000000..632b25156e4 --- /dev/null +++ b/drivers/media/dvb-frontends/stv0288.c @@ -0,0 +1,626 @@ +/* + Driver for ST STV0288 demodulator + Copyright (C) 2006 Georg Acher, BayCom GmbH, acher (at) baycom (dot) de + for Reel Multimedia + Copyright (C) 2008 TurboSight.com, Bob Liu <bob@turbosight.com> + Copyright (C) 2008 Igor M. Liplianin <liplianin@me.by> + Removed stb6000 specific tuner code and revised some + procedures. + 2010-09-01 Josef Pavlik <josef@pavlik.it> + Fixed diseqc_msg, diseqc_burst and set_tone problems + + 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 <linux/init.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/string.h> +#include <linux/slab.h> +#include <linux/jiffies.h> +#include <asm/div64.h> + +#include "dvb_frontend.h" +#include "stv0288.h" + +struct stv0288_state { + struct i2c_adapter *i2c; + const struct stv0288_config *config; + struct dvb_frontend frontend; + + u8 initialised:1; + u32 tuner_frequency; + u32 symbol_rate; + fe_code_rate_t fec_inner; + int errmode; +}; + +#define STATUS_BER 0 +#define STATUS_UCBLOCKS 1 + +static int debug; +static int debug_legacy_dish_switch; +#define dprintk(args...) \ + do { \ + if (debug) \ + printk(KERN_DEBUG "stv0288: " args); \ + } while (0) + + +static int stv0288_writeregI(struct stv0288_state *state, u8 reg, u8 data) +{ + int ret; + u8 buf[] = { reg, data }; + struct i2c_msg msg = { + .addr = state->config->demod_address, + .flags = 0, + .buf = buf, + .len = 2 + }; + + ret = i2c_transfer(state->i2c, &msg, 1); + + if (ret != 1) + dprintk("%s: writereg error (reg == 0x%02x, val == 0x%02x, " + "ret == %i)\n", __func__, reg, data, ret); + + return (ret != 1) ? -EREMOTEIO : 0; +} + +static int stv0288_write(struct dvb_frontend *fe, const u8 buf[], int len) +{ + struct stv0288_state *state = fe->demodulator_priv; + + if (len != 2) + return -EINVAL; + + return stv0288_writeregI(state, buf[0], buf[1]); +} + +static u8 stv0288_readreg(struct stv0288_state *state, u8 reg) +{ + int ret; + u8 b0[] = { reg }; + u8 b1[] = { 0 }; + struct i2c_msg msg[] = { + { + .addr = state->config->demod_address, + .flags = 0, + .buf = b0, + .len = 1 + }, { + .addr = state->config->demod_address, + .flags = I2C_M_RD, + .buf = b1, + .len = 1 + } + }; + + ret = i2c_transfer(state->i2c, msg, 2); + + if (ret != 2) + dprintk("%s: readreg error (reg == 0x%02x, ret == %i)\n", + __func__, reg, ret); + + return b1[0]; +} + +static int stv0288_set_symbolrate(struct dvb_frontend *fe, u32 srate) +{ + struct stv0288_state *state = fe->demodulator_priv; + unsigned int temp; + unsigned char b[3]; + + if ((srate < 1000000) || (srate > 45000000)) + return -EINVAL; + + stv0288_writeregI(state, 0x22, 0); + stv0288_writeregI(state, 0x23, 0); + stv0288_writeregI(state, 0x2b, 0xff); + stv0288_writeregI(state, 0x2c, 0xf7); + + temp = (unsigned int)srate / 1000; + + temp = temp * 32768; + temp = temp / 25; + temp = temp / 125; + b[0] = (unsigned char)((temp >> 12) & 0xff); + b[1] = (unsigned char)((temp >> 4) & 0xff); + b[2] = (unsigned char)((temp << 4) & 0xf0); + stv0288_writeregI(state, 0x28, 0x80); /* SFRH */ + stv0288_writeregI(state, 0x29, 0); /* SFRM */ + stv0288_writeregI(state, 0x2a, 0); /* SFRL */ + + stv0288_writeregI(state, 0x28, b[0]); + stv0288_writeregI(state, 0x29, b[1]); + stv0288_writeregI(state, 0x2a, b[2]); + dprintk("stv0288: stv0288_set_symbolrate\n"); + + return 0; +} + +static int stv0288_send_diseqc_msg(struct dvb_frontend *fe, + struct dvb_diseqc_master_cmd *m) +{ + struct stv0288_state *state = fe->demodulator_priv; + + int i; + + dprintk("%s\n", __func__); + + stv0288_writeregI(state, 0x09, 0); + msleep(30); + stv0288_writeregI(state, 0x05, 0x12);/* modulated mode, single shot */ + + for (i = 0; i < m->msg_len; i++) { + if (stv0288_writeregI(state, 0x06, m->msg[i])) + return -EREMOTEIO; + } + msleep(m->msg_len*12); + return 0; +} + +static int stv0288_send_diseqc_burst(struct dvb_frontend *fe, + fe_sec_mini_cmd_t burst) +{ + struct stv0288_state *state = fe->demodulator_priv; + + dprintk("%s\n", __func__); + + if (stv0288_writeregI(state, 0x05, 0x03))/* burst mode, single shot */ + return -EREMOTEIO; + + if (stv0288_writeregI(state, 0x06, burst == SEC_MINI_A ? 0x00 : 0xff)) + return -EREMOTEIO; + + msleep(15); + if (stv0288_writeregI(state, 0x05, 0x12)) + return -EREMOTEIO; + + return 0; +} + +static int stv0288_set_tone(struct dvb_frontend *fe, fe_sec_tone_mode_t tone) +{ + struct stv0288_state *state = fe->demodulator_priv; + + switch (tone) { + case SEC_TONE_ON: + if (stv0288_writeregI(state, 0x05, 0x10))/* cont carrier */ + return -EREMOTEIO; + break; + + case SEC_TONE_OFF: + if (stv0288_writeregI(state, 0x05, 0x12))/* burst mode off*/ + return -EREMOTEIO; + break; + + default: + return -EINVAL; + } + return 0; +} + +static u8 stv0288_inittab[] = { + 0x01, 0x15, + 0x02, 0x20, + 0x09, 0x0, + 0x0a, 0x4, + 0x0b, 0x0, + 0x0c, 0x0, + 0x0d, 0x0, + 0x0e, 0xd4, + 0x0f, 0x30, + 0x11, 0x80, + 0x12, 0x03, + 0x13, 0x48, + 0x14, 0x84, + 0x15, 0x45, + 0x16, 0xb7, + 0x17, 0x9c, + 0x18, 0x0, + 0x19, 0xa6, + 0x1a, 0x88, + 0x1b, 0x8f, + 0x1c, 0xf0, + 0x20, 0x0b, + 0x21, 0x54, + 0x22, 0x0, + 0x23, 0x0, + 0x2b, 0xff, + 0x2c, 0xf7, + 0x30, 0x0, + 0x31, 0x1e, + 0x32, 0x14, + 0x33, 0x0f, + 0x34, 0x09, + 0x35, 0x0c, + 0x36, 0x05, + 0x37, 0x2f, + 0x38, 0x16, + 0x39, 0xbe, + 0x3a, 0x0, + 0x3b, 0x13, + 0x3c, 0x11, + 0x3d, 0x30, + 0x40, 0x63, + 0x41, 0x04, + 0x42, 0x20, + 0x43, 0x00, + 0x44, 0x00, + 0x45, 0x00, + 0x46, 0x00, + 0x47, 0x00, + 0x4a, 0x00, + 0x50, 0x10, + 0x51, 0x38, + 0x52, 0x21, + 0x58, 0x54, + 0x59, 0x86, + 0x5a, 0x0, + 0x5b, 0x9b, + 0x5c, 0x08, + 0x5d, 0x7f, + 0x5e, 0x0, + 0x5f, 0xff, + 0x70, 0x0, + 0x71, 0x0, + 0x72, 0x0, + 0x74, 0x0, + 0x75, 0x0, + 0x76, 0x0, + 0x81, 0x0, + 0x82, 0x3f, + 0x83, 0x3f, + 0x84, 0x0, + 0x85, 0x0, + 0x88, 0x0, + 0x89, 0x0, + 0x8a, 0x0, + 0x8b, 0x0, + 0x8c, 0x0, + 0x90, 0x0, + 0x91, 0x0, + 0x92, 0x0, + 0x93, 0x0, + 0x94, 0x1c, + 0x97, 0x0, + 0xa0, 0x48, + 0xa1, 0x0, + 0xb0, 0xb8, + 0xb1, 0x3a, + 0xb2, 0x10, + 0xb3, 0x82, + 0xb4, 0x80, + 0xb5, 0x82, + 0xb6, 0x82, + 0xb7, 0x82, + 0xb8, 0x20, + 0xb9, 0x0, + 0xf0, 0x0, + 0xf1, 0x0, + 0xf2, 0xc0, + 0x51, 0x36, + 0x52, 0x09, + 0x53, 0x94, + 0x54, 0x62, + 0x55, 0x29, + 0x56, 0x64, + 0x57, 0x2b, + 0xff, 0xff, +}; + +static int stv0288_set_voltage(struct dvb_frontend *fe, fe_sec_voltage_t volt) +{ + dprintk("%s: %s\n", __func__, + volt == SEC_VOLTAGE_13 ? "SEC_VOLTAGE_13" : + volt == SEC_VOLTAGE_18 ? "SEC_VOLTAGE_18" : "??"); + + return 0; +} + +static int stv0288_init(struct dvb_frontend *fe) +{ + struct stv0288_state *state = fe->demodulator_priv; + int i; + u8 reg; + u8 val; + + dprintk("stv0288: init chip\n"); + stv0288_writeregI(state, 0x41, 0x04); + msleep(50); + + /* we have default inittab */ + if (state->config->inittab == NULL) { + for (i = 0; !(stv0288_inittab[i] == 0xff && + stv0288_inittab[i + 1] == 0xff); i += 2) + stv0288_writeregI(state, stv0288_inittab[i], + stv0288_inittab[i + 1]); + } else { + for (i = 0; ; i += 2) { + reg = state->config->inittab[i]; + val = state->config->inittab[i+1]; + if (reg == 0xff && val == 0xff) + break; + stv0288_writeregI(state, reg, val); + } + } + return 0; +} + +static int stv0288_read_status(struct dvb_frontend *fe, fe_status_t *status) +{ + struct stv0288_state *state = fe->demodulator_priv; + + u8 sync = stv0288_readreg(state, 0x24); + if (sync == 255) + sync = 0; + + dprintk("%s : FE_READ_STATUS : VSTATUS: 0x%02x\n", __func__, sync); + + *status = 0; + if (sync & 0x80) + *status |= FE_HAS_CARRIER | FE_HAS_SIGNAL; + if (sync & 0x10) + *status |= FE_HAS_VITERBI; + if (sync & 0x08) { + *status |= FE_HAS_LOCK; + dprintk("stv0288 has locked\n"); + } + + return 0; +} + +static int stv0288_read_ber(struct dvb_frontend *fe, u32 *ber) +{ + struct stv0288_state *state = fe->demodulator_priv; + + if (state->errmode != STATUS_BER) + return 0; + *ber = (stv0288_readreg(state, 0x26) << 8) | + stv0288_readreg(state, 0x27); + dprintk("stv0288_read_ber %d\n", *ber); + + return 0; +} + + +static int stv0288_read_signal_strength(struct dvb_frontend *fe, u16 *strength) +{ + struct stv0288_state *state = fe->demodulator_priv; + + s32 signal = 0xffff - ((stv0288_readreg(state, 0x10) << 8)); + + + signal = signal * 5 / 4; + *strength = (signal > 0xffff) ? 0xffff : (signal < 0) ? 0 : signal; + dprintk("stv0288_read_signal_strength %d\n", *strength); + + return 0; +} +static int stv0288_sleep(struct dvb_frontend *fe) +{ + struct stv0288_state *state = fe->demodulator_priv; + + stv0288_writeregI(state, 0x41, 0x84); + state->initialised = 0; + + return 0; +} +static int stv0288_read_snr(struct dvb_frontend *fe, u16 *snr) +{ + struct stv0288_state *state = fe->demodulator_priv; + + s32 xsnr = 0xffff - ((stv0288_readreg(state, 0x2d) << 8) + | stv0288_readreg(state, 0x2e)); + xsnr = 3 * (xsnr - 0xa100); + *snr = (xsnr > 0xffff) ? 0xffff : (xsnr < 0) ? 0 : xsnr; + dprintk("stv0288_read_snr %d\n", *snr); + + return 0; +} + +static int stv0288_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks) +{ + struct stv0288_state *state = fe->demodulator_priv; + + if (state->errmode != STATUS_BER) + return 0; + *ucblocks = (stv0288_readreg(state, 0x26) << 8) | + stv0288_readreg(state, 0x27); + dprintk("stv0288_read_ber %d\n", *ucblocks); + + return 0; +} + +static int stv0288_set_property(struct dvb_frontend *fe, struct dtv_property *p) +{ + dprintk("%s(..)\n", __func__); + return 0; +} + +static int stv0288_set_frontend(struct dvb_frontend *fe) +{ + struct stv0288_state *state = fe->demodulator_priv; + struct dtv_frontend_properties *c = &fe->dtv_property_cache; + + char tm; + unsigned char tda[3]; + u8 reg, time_out = 0; + + dprintk("%s : FE_SET_FRONTEND\n", __func__); + + if (c->delivery_system != SYS_DVBS) { + dprintk("%s: unsupported delivery " + "system selected (%d)\n", + __func__, c->delivery_system); + return -EOPNOTSUPP; + } + + if (state->config->set_ts_params) + state->config->set_ts_params(fe, 0); + + /* only frequency & symbol_rate are used for tuner*/ + if (fe->ops.tuner_ops.set_params) { + fe->ops.tuner_ops.set_params(fe); + if (fe->ops.i2c_gate_ctrl) + fe->ops.i2c_gate_ctrl(fe, 0); + } + + udelay(10); + stv0288_set_symbolrate(fe, c->symbol_rate); + /* Carrier lock control register */ + stv0288_writeregI(state, 0x15, 0xc5); + + tda[2] = 0x0; /* CFRL */ + for (tm = -9; tm < 7;) { + /* Viterbi status */ + reg = stv0288_readreg(state, 0x24); + if (reg & 0x8) + break; + if (reg & 0x80) { + time_out++; + if (time_out > 10) + break; + tda[2] += 40; + if (tda[2] < 40) + tm++; + } else { + tm++; + tda[2] = 0; + time_out = 0; + } + tda[1] = (unsigned char)tm; + stv0288_writeregI(state, 0x2b, tda[1]); + stv0288_writeregI(state, 0x2c, tda[2]); + msleep(30); + } + state->tuner_frequency = c->frequency; + state->fec_inner = FEC_AUTO; + state->symbol_rate = c->symbol_rate; + + return 0; +} + +static int stv0288_i2c_gate_ctrl(struct dvb_frontend *fe, int enable) +{ + struct stv0288_state *state = fe->demodulator_priv; + + if (enable) + stv0288_writeregI(state, 0x01, 0xb5); + else + stv0288_writeregI(state, 0x01, 0x35); + + udelay(1); + + return 0; +} + +static void stv0288_release(struct dvb_frontend *fe) +{ + struct stv0288_state *state = fe->demodulator_priv; + kfree(state); +} + +static struct dvb_frontend_ops stv0288_ops = { + .delsys = { SYS_DVBS }, + .info = { + .name = "ST STV0288 DVB-S", + .frequency_min = 950000, + .frequency_max = 2150000, + .frequency_stepsize = 1000, /* kHz for QPSK frontends */ + .frequency_tolerance = 0, + .symbol_rate_min = 1000000, + .symbol_rate_max = 45000000, + .symbol_rate_tolerance = 500, /* ppm */ + .caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 | + FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | + FE_CAN_QPSK | + FE_CAN_FEC_AUTO + }, + + .release = stv0288_release, + .init = stv0288_init, + .sleep = stv0288_sleep, + .write = stv0288_write, + .i2c_gate_ctrl = stv0288_i2c_gate_ctrl, + .read_status = stv0288_read_status, + .read_ber = stv0288_read_ber, + .read_signal_strength = stv0288_read_signal_strength, + .read_snr = stv0288_read_snr, + .read_ucblocks = stv0288_read_ucblocks, + .diseqc_send_master_cmd = stv0288_send_diseqc_msg, + .diseqc_send_burst = stv0288_send_diseqc_burst, + .set_tone = stv0288_set_tone, + .set_voltage = stv0288_set_voltage, + + .set_property = stv0288_set_property, + .set_frontend = stv0288_set_frontend, +}; + +struct dvb_frontend *stv0288_attach(const struct stv0288_config *config, + struct i2c_adapter *i2c) +{ + struct stv0288_state *state = NULL; + int id; + + /* allocate memory for the internal state */ + state = kzalloc(sizeof(struct stv0288_state), GFP_KERNEL); + if (state == NULL) + goto error; + + /* setup the state */ + state->config = config; + state->i2c = i2c; + state->initialised = 0; + state->tuner_frequency = 0; + state->symbol_rate = 0; + state->fec_inner = 0; + state->errmode = STATUS_BER; + + stv0288_writeregI(state, 0x41, 0x04); + msleep(200); + id = stv0288_readreg(state, 0x00); + dprintk("stv0288 id %x\n", id); + + /* register 0x00 contains 0x11 for STV0288 */ + if (id != 0x11) + goto error; + + /* create dvb_frontend */ + memcpy(&state->frontend.ops, &stv0288_ops, + sizeof(struct dvb_frontend_ops)); + state->frontend.demodulator_priv = state; + return &state->frontend; + +error: + kfree(state); + + return NULL; +} +EXPORT_SYMBOL(stv0288_attach); + +module_param(debug_legacy_dish_switch, int, 0444); +MODULE_PARM_DESC(debug_legacy_dish_switch, + "Enable timing analysis for Dish Network legacy switches"); + +module_param(debug, int, 0644); +MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off)."); + +MODULE_DESCRIPTION("ST STV0288 DVB Demodulator driver"); +MODULE_AUTHOR("Georg Acher, Bob Liu, Igor liplianin"); +MODULE_LICENSE("GPL"); + |