diff options
author | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-08-14 06:13:41 +0400 |
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committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-08-14 06:13:41 +0400 |
commit | 9a0bf528b4d66b605f02634236da085595c22101 (patch) | |
tree | e9ff008ff15c3ee5add6d41173ee5e61939480dd /drivers/media/dvb/frontends/stb6100.c | |
parent | 3d6c2bc08ac4f75bf3597740357c98f2207ca412 (diff) | |
download | linux-9a0bf528b4d66b605f02634236da085595c22101.tar.xz |
[media] move the dvb/frontends to drivers/media/dvb-frontends
Raise the DVB frontends one level up, as the intention is to remove
the drivers/media/dvb directory.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/dvb/frontends/stb6100.c')
-rw-r--r-- | drivers/media/dvb/frontends/stb6100.c | 611 |
1 files changed, 0 insertions, 611 deletions
diff --git a/drivers/media/dvb/frontends/stb6100.c b/drivers/media/dvb/frontends/stb6100.c deleted file mode 100644 index 2e93e65d2cdb..000000000000 --- a/drivers/media/dvb/frontends/stb6100.c +++ /dev/null @@ -1,611 +0,0 @@ -/* - STB6100 Silicon Tuner - Copyright (C) Manu Abraham (abraham.manu@gmail.com) - - Copyright (C) ST Microelectronics - - 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/slab.h> -#include <linux/string.h> - -#include "dvb_frontend.h" -#include "stb6100.h" - -static unsigned int verbose; -module_param(verbose, int, 0644); - - -#define FE_ERROR 0 -#define FE_NOTICE 1 -#define FE_INFO 2 -#define FE_DEBUG 3 - -#define dprintk(x, y, z, format, arg...) do { \ - if (z) { \ - if ((x > FE_ERROR) && (x > y)) \ - printk(KERN_ERR "%s: " format "\n", __func__ , ##arg); \ - else if ((x > FE_NOTICE) && (x > y)) \ - printk(KERN_NOTICE "%s: " format "\n", __func__ , ##arg); \ - else if ((x > FE_INFO) && (x > y)) \ - printk(KERN_INFO "%s: " format "\n", __func__ , ##arg); \ - else if ((x > FE_DEBUG) && (x > y)) \ - printk(KERN_DEBUG "%s: " format "\n", __func__ , ##arg); \ - } else { \ - if (x > y) \ - printk(format, ##arg); \ - } \ -} while (0) - -struct stb6100_lkup { - u32 val_low; - u32 val_high; - u8 reg; -}; - -static int stb6100_release(struct dvb_frontend *fe); - -static const struct stb6100_lkup lkup[] = { - { 0, 950000, 0x0a }, - { 950000, 1000000, 0x0a }, - { 1000000, 1075000, 0x0c }, - { 1075000, 1200000, 0x00 }, - { 1200000, 1300000, 0x01 }, - { 1300000, 1370000, 0x02 }, - { 1370000, 1470000, 0x04 }, - { 1470000, 1530000, 0x05 }, - { 1530000, 1650000, 0x06 }, - { 1650000, 1800000, 0x08 }, - { 1800000, 1950000, 0x0a }, - { 1950000, 2150000, 0x0c }, - { 2150000, 9999999, 0x0c }, - { 0, 0, 0x00 } -}; - -/* Register names for easy debugging. */ -static const char *stb6100_regnames[] = { - [STB6100_LD] = "LD", - [STB6100_VCO] = "VCO", - [STB6100_NI] = "NI", - [STB6100_NF_LSB] = "NF", - [STB6100_K] = "K", - [STB6100_G] = "G", - [STB6100_F] = "F", - [STB6100_DLB] = "DLB", - [STB6100_TEST1] = "TEST1", - [STB6100_FCCK] = "FCCK", - [STB6100_LPEN] = "LPEN", - [STB6100_TEST3] = "TEST3", -}; - -/* Template for normalisation, i.e. setting unused or undocumented - * bits as required according to the documentation. - */ -struct stb6100_regmask { - u8 mask; - u8 set; -}; - -static const struct stb6100_regmask stb6100_template[] = { - [STB6100_LD] = { 0xff, 0x00 }, - [STB6100_VCO] = { 0xff, 0x00 }, - [STB6100_NI] = { 0xff, 0x00 }, - [STB6100_NF_LSB] = { 0xff, 0x00 }, - [STB6100_K] = { 0xc7, 0x38 }, - [STB6100_G] = { 0xef, 0x10 }, - [STB6100_F] = { 0x1f, 0xc0 }, - [STB6100_DLB] = { 0x38, 0xc4 }, - [STB6100_TEST1] = { 0x00, 0x8f }, - [STB6100_FCCK] = { 0x40, 0x0d }, - [STB6100_LPEN] = { 0xf0, 0x0b }, - [STB6100_TEST3] = { 0x00, 0xde }, -}; - -/* - * Currently unused. Some boards might need it in the future - */ -static inline void stb6100_normalise_regs(u8 regs[]) -{ - int i; - - for (i = 0; i < STB6100_NUMREGS; i++) - regs[i] = (regs[i] & stb6100_template[i].mask) | stb6100_template[i].set; -} - -static int stb6100_read_regs(struct stb6100_state *state, u8 regs[]) -{ - int rc; - struct i2c_msg msg = { - .addr = state->config->tuner_address, - .flags = I2C_M_RD, - .buf = regs, - .len = STB6100_NUMREGS - }; - - rc = i2c_transfer(state->i2c, &msg, 1); - if (unlikely(rc != 1)) { - dprintk(verbose, FE_ERROR, 1, "Read (0x%x) err, rc=[%d]", - state->config->tuner_address, rc); - - return -EREMOTEIO; - } - if (unlikely(verbose > FE_DEBUG)) { - int i; - - dprintk(verbose, FE_DEBUG, 1, " Read from 0x%02x", state->config->tuner_address); - for (i = 0; i < STB6100_NUMREGS; i++) - dprintk(verbose, FE_DEBUG, 1, " %s: 0x%02x", stb6100_regnames[i], regs[i]); - } - return 0; -} - -static int stb6100_read_reg(struct stb6100_state *state, u8 reg) -{ - u8 regs[STB6100_NUMREGS]; - - struct i2c_msg msg = { - .addr = state->config->tuner_address + reg, - .flags = I2C_M_RD, - .buf = regs, - .len = 1 - }; - - i2c_transfer(state->i2c, &msg, 1); - - if (unlikely(reg >= STB6100_NUMREGS)) { - dprintk(verbose, FE_ERROR, 1, "Invalid register offset 0x%x", reg); - return -EINVAL; - } - if (unlikely(verbose > FE_DEBUG)) { - dprintk(verbose, FE_DEBUG, 1, " Read from 0x%02x", state->config->tuner_address); - dprintk(verbose, FE_DEBUG, 1, " %s: 0x%02x", stb6100_regnames[reg], regs[0]); - } - - return (unsigned int)regs[0]; -} - -static int stb6100_write_reg_range(struct stb6100_state *state, u8 buf[], int start, int len) -{ - int rc; - u8 cmdbuf[len + 1]; - struct i2c_msg msg = { - .addr = state->config->tuner_address, - .flags = 0, - .buf = cmdbuf, - .len = len + 1 - }; - - if (unlikely(start < 1 || start + len > STB6100_NUMREGS)) { - dprintk(verbose, FE_ERROR, 1, "Invalid register range %d:%d", - start, len); - return -EINVAL; - } - memcpy(&cmdbuf[1], buf, len); - cmdbuf[0] = start; - - if (unlikely(verbose > FE_DEBUG)) { - int i; - - dprintk(verbose, FE_DEBUG, 1, " Write @ 0x%02x: [%d:%d]", state->config->tuner_address, start, len); - for (i = 0; i < len; i++) - dprintk(verbose, FE_DEBUG, 1, " %s: 0x%02x", stb6100_regnames[start + i], buf[i]); - } - rc = i2c_transfer(state->i2c, &msg, 1); - if (unlikely(rc != 1)) { - dprintk(verbose, FE_ERROR, 1, "(0x%x) write err [%d:%d], rc=[%d]", - (unsigned int)state->config->tuner_address, start, len, rc); - return -EREMOTEIO; - } - return 0; -} - -static int stb6100_write_reg(struct stb6100_state *state, u8 reg, u8 data) -{ - if (unlikely(reg >= STB6100_NUMREGS)) { - dprintk(verbose, FE_ERROR, 1, "Invalid register offset 0x%x", reg); - return -EREMOTEIO; - } - data = (data & stb6100_template[reg].mask) | stb6100_template[reg].set; - return stb6100_write_reg_range(state, &data, reg, 1); -} - - -static int stb6100_get_status(struct dvb_frontend *fe, u32 *status) -{ - int rc; - struct stb6100_state *state = fe->tuner_priv; - - rc = stb6100_read_reg(state, STB6100_LD); - if (rc < 0) { - dprintk(verbose, FE_ERROR, 1, "%s failed", __func__); - return rc; - } - return (rc & STB6100_LD_LOCK) ? TUNER_STATUS_LOCKED : 0; -} - -static int stb6100_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth) -{ - int rc; - u8 f; - struct stb6100_state *state = fe->tuner_priv; - - rc = stb6100_read_reg(state, STB6100_F); - if (rc < 0) - return rc; - f = rc & STB6100_F_F; - - state->status.bandwidth = (f + 5) * 2000; /* x2 for ZIF */ - - *bandwidth = state->bandwidth = state->status.bandwidth * 1000; - dprintk(verbose, FE_DEBUG, 1, "bandwidth = %u Hz", state->bandwidth); - return 0; -} - -static int stb6100_set_bandwidth(struct dvb_frontend *fe, u32 bandwidth) -{ - u32 tmp; - int rc; - struct stb6100_state *state = fe->tuner_priv; - - dprintk(verbose, FE_DEBUG, 1, "set bandwidth to %u Hz", bandwidth); - - bandwidth /= 2; /* ZIF */ - - if (bandwidth >= 36000000) /* F[4:0] BW/2 max =31+5=36 mhz for F=31 */ - tmp = 31; - else if (bandwidth <= 5000000) /* bw/2 min = 5Mhz for F=0 */ - tmp = 0; - else /* if 5 < bw/2 < 36 */ - tmp = (bandwidth + 500000) / 1000000 - 5; - - /* Turn on LPF bandwidth setting clock control, - * set bandwidth, wait 10ms, turn off. - */ - rc = stb6100_write_reg(state, STB6100_FCCK, 0x0d | STB6100_FCCK_FCCK); - if (rc < 0) - return rc; - rc = stb6100_write_reg(state, STB6100_F, 0xc0 | tmp); - if (rc < 0) - return rc; - - msleep(5); /* This is dangerous as another (related) thread may start */ - - rc = stb6100_write_reg(state, STB6100_FCCK, 0x0d); - if (rc < 0) - return rc; - - msleep(10); /* This is dangerous as another (related) thread may start */ - - return 0; -} - -static int stb6100_get_frequency(struct dvb_frontend *fe, u32 *frequency) -{ - int rc; - u32 nint, nfrac, fvco; - int psd2, odiv; - struct stb6100_state *state = fe->tuner_priv; - u8 regs[STB6100_NUMREGS]; - - rc = stb6100_read_regs(state, regs); - if (rc < 0) - return rc; - - odiv = (regs[STB6100_VCO] & STB6100_VCO_ODIV) >> STB6100_VCO_ODIV_SHIFT; - psd2 = (regs[STB6100_K] & STB6100_K_PSD2) >> STB6100_K_PSD2_SHIFT; - nint = regs[STB6100_NI]; - nfrac = ((regs[STB6100_K] & STB6100_K_NF_MSB) << 8) | regs[STB6100_NF_LSB]; - fvco = (nfrac * state->reference >> (9 - psd2)) + (nint * state->reference << psd2); - *frequency = state->frequency = fvco >> (odiv + 1); - - dprintk(verbose, FE_DEBUG, 1, - "frequency = %u kHz, odiv = %u, psd2 = %u, fxtal = %u kHz, fvco = %u kHz, N(I) = %u, N(F) = %u", - state->frequency, odiv, psd2, state->reference, fvco, nint, nfrac); - return 0; -} - - -static int stb6100_set_frequency(struct dvb_frontend *fe, u32 frequency) -{ - int rc; - const struct stb6100_lkup *ptr; - struct stb6100_state *state = fe->tuner_priv; - struct dtv_frontend_properties *p = &fe->dtv_property_cache; - - u32 srate = 0, fvco, nint, nfrac; - u8 regs[STB6100_NUMREGS]; - u8 g, psd2, odiv; - - dprintk(verbose, FE_DEBUG, 1, "Version 2010-8-14 13:51"); - - if (fe->ops.get_frontend) { - dprintk(verbose, FE_DEBUG, 1, "Get frontend parameters"); - fe->ops.get_frontend(fe); - } - srate = p->symbol_rate; - - /* Set up tuner cleanly, LPF calibration on */ - rc = stb6100_write_reg(state, STB6100_FCCK, 0x4d | STB6100_FCCK_FCCK); - if (rc < 0) - return rc; /* allow LPF calibration */ - - /* PLL Loop disabled, bias on, VCO on, synth on */ - regs[STB6100_LPEN] = 0xeb; - rc = stb6100_write_reg(state, STB6100_LPEN, regs[STB6100_LPEN]); - if (rc < 0) - return rc; - - /* Program the registers with their data values */ - - /* VCO divide ratio (LO divide ratio, VCO prescaler enable). */ - if (frequency <= 1075000) - odiv = 1; - else - odiv = 0; - - /* VCO enabled, search clock off as per LL3.7, 3.4.1 */ - regs[STB6100_VCO] = 0xe0 | (odiv << STB6100_VCO_ODIV_SHIFT); - - /* OSM */ - for (ptr = lkup; - (ptr->val_high != 0) && !CHKRANGE(frequency, ptr->val_low, ptr->val_high); - ptr++); - - if (ptr->val_high == 0) { - printk(KERN_ERR "%s: frequency out of range: %u kHz\n", __func__, frequency); - return -EINVAL; - } - regs[STB6100_VCO] = (regs[STB6100_VCO] & ~STB6100_VCO_OSM) | ptr->reg; - rc = stb6100_write_reg(state, STB6100_VCO, regs[STB6100_VCO]); - if (rc < 0) - return rc; - - if ((frequency > 1075000) && (frequency <= 1325000)) - psd2 = 0; - else - psd2 = 1; - /* F(VCO) = F(LO) * (ODIV == 0 ? 2 : 4) */ - fvco = frequency << (1 + odiv); - /* N(I) = floor(f(VCO) / (f(XTAL) * (PSD2 ? 2 : 1))) */ - nint = fvco / (state->reference << psd2); - /* N(F) = round(f(VCO) / f(XTAL) * (PSD2 ? 2 : 1) - N(I)) * 2 ^ 9 */ - nfrac = DIV_ROUND_CLOSEST((fvco - (nint * state->reference << psd2)) - << (9 - psd2), state->reference); - - /* NI */ - regs[STB6100_NI] = nint; - rc = stb6100_write_reg(state, STB6100_NI, regs[STB6100_NI]); - if (rc < 0) - return rc; - - /* NF */ - regs[STB6100_NF_LSB] = nfrac; - rc = stb6100_write_reg(state, STB6100_NF_LSB, regs[STB6100_NF_LSB]); - if (rc < 0) - return rc; - - /* K */ - regs[STB6100_K] = (0x38 & ~STB6100_K_PSD2) | (psd2 << STB6100_K_PSD2_SHIFT); - regs[STB6100_K] = (regs[STB6100_K] & ~STB6100_K_NF_MSB) | ((nfrac >> 8) & STB6100_K_NF_MSB); - rc = stb6100_write_reg(state, STB6100_K, regs[STB6100_K]); - if (rc < 0) - return rc; - - /* G Baseband gain. */ - if (srate >= 15000000) - g = 9; /* +4 dB */ - else if (srate >= 5000000) - g = 11; /* +8 dB */ - else - g = 14; /* +14 dB */ - - regs[STB6100_G] = (0x10 & ~STB6100_G_G) | g; - regs[STB6100_G] &= ~STB6100_G_GCT; /* mask GCT */ - regs[STB6100_G] |= (1 << 5); /* 2Vp-p Mode */ - rc = stb6100_write_reg(state, STB6100_G, regs[STB6100_G]); - if (rc < 0) - return rc; - - /* F we don't write as it is set up in BW set */ - - /* DLB set DC servo loop BW to 160Hz (LLA 3.8 / 2.1) */ - regs[STB6100_DLB] = 0xcc; - rc = stb6100_write_reg(state, STB6100_DLB, regs[STB6100_DLB]); - if (rc < 0) - return rc; - - dprintk(verbose, FE_DEBUG, 1, - "frequency = %u, srate = %u, g = %u, odiv = %u, psd2 = %u, fxtal = %u, osm = %u, fvco = %u, N(I) = %u, N(F) = %u", - frequency, srate, (unsigned int)g, (unsigned int)odiv, - (unsigned int)psd2, state->reference, - ptr->reg, fvco, nint, nfrac); - - /* Set up the test registers */ - regs[STB6100_TEST1] = 0x8f; - rc = stb6100_write_reg(state, STB6100_TEST1, regs[STB6100_TEST1]); - if (rc < 0) - return rc; - regs[STB6100_TEST3] = 0xde; - rc = stb6100_write_reg(state, STB6100_TEST3, regs[STB6100_TEST3]); - if (rc < 0) - return rc; - - /* Bring up tuner according to LLA 3.7 3.4.1, step 2 */ - regs[STB6100_LPEN] = 0xfb; /* PLL Loop enabled, bias on, VCO on, synth on */ - rc = stb6100_write_reg(state, STB6100_LPEN, regs[STB6100_LPEN]); - if (rc < 0) - return rc; - - msleep(2); - - /* Bring up tuner according to LLA 3.7 3.4.1, step 3 */ - regs[STB6100_VCO] &= ~STB6100_VCO_OCK; /* VCO fast search */ - rc = stb6100_write_reg(state, STB6100_VCO, regs[STB6100_VCO]); - if (rc < 0) - return rc; - - msleep(10); /* This is dangerous as another (related) thread may start */ /* wait for LO to lock */ - - regs[STB6100_VCO] &= ~STB6100_VCO_OSCH; /* vco search disabled */ - regs[STB6100_VCO] |= STB6100_VCO_OCK; /* search clock off */ - rc = stb6100_write_reg(state, STB6100_VCO, regs[STB6100_VCO]); - if (rc < 0) - return rc; - - rc = stb6100_write_reg(state, STB6100_FCCK, 0x0d); - if (rc < 0) - return rc; /* Stop LPF calibration */ - - msleep(10); /* This is dangerous as another (related) thread may start */ - /* wait for stabilisation, (should not be necessary) */ - return 0; -} - -static int stb6100_sleep(struct dvb_frontend *fe) -{ - /* TODO: power down */ - return 0; -} - -static int stb6100_init(struct dvb_frontend *fe) -{ - struct stb6100_state *state = fe->tuner_priv; - struct tuner_state *status = &state->status; - - status->tunerstep = 125000; - status->ifreq = 0; - status->refclock = 27000000; /* Hz */ - status->iqsense = 1; - status->bandwidth = 36000; /* kHz */ - state->bandwidth = status->bandwidth * 1000; /* Hz */ - state->reference = status->refclock / 1000; /* kHz */ - - /* Set default bandwidth. Modified, PN 13-May-10 */ - return 0; -} - -static int stb6100_get_state(struct dvb_frontend *fe, - enum tuner_param param, - struct tuner_state *state) -{ - switch (param) { - case DVBFE_TUNER_FREQUENCY: - stb6100_get_frequency(fe, &state->frequency); - break; - case DVBFE_TUNER_TUNERSTEP: - break; - case DVBFE_TUNER_IFFREQ: - break; - case DVBFE_TUNER_BANDWIDTH: - stb6100_get_bandwidth(fe, &state->bandwidth); - break; - case DVBFE_TUNER_REFCLOCK: - break; - default: - break; - } - - return 0; -} - -static int stb6100_set_state(struct dvb_frontend *fe, - enum tuner_param param, - struct tuner_state *state) -{ - struct stb6100_state *tstate = fe->tuner_priv; - - switch (param) { - case DVBFE_TUNER_FREQUENCY: - stb6100_set_frequency(fe, state->frequency); - tstate->frequency = state->frequency; - break; - case DVBFE_TUNER_TUNERSTEP: - break; - case DVBFE_TUNER_IFFREQ: - break; - case DVBFE_TUNER_BANDWIDTH: - stb6100_set_bandwidth(fe, state->bandwidth); - tstate->bandwidth = state->bandwidth; - break; - case DVBFE_TUNER_REFCLOCK: - break; - default: - break; - } - - return 0; -} - -static struct dvb_tuner_ops stb6100_ops = { - .info = { - .name = "STB6100 Silicon Tuner", - .frequency_min = 950000, - .frequency_max = 2150000, - .frequency_step = 0, - }, - - .init = stb6100_init, - .sleep = stb6100_sleep, - .get_status = stb6100_get_status, - .get_state = stb6100_get_state, - .set_state = stb6100_set_state, - .release = stb6100_release -}; - -struct dvb_frontend *stb6100_attach(struct dvb_frontend *fe, - const struct stb6100_config *config, - struct i2c_adapter *i2c) -{ - struct stb6100_state *state = NULL; - - state = kzalloc(sizeof (struct stb6100_state), GFP_KERNEL); - if (state == NULL) - goto error; - - state->config = config; - state->i2c = i2c; - state->frontend = fe; - state->reference = config->refclock / 1000; /* kHz */ - fe->tuner_priv = state; - fe->ops.tuner_ops = stb6100_ops; - - printk("%s: Attaching STB6100 \n", __func__); - return fe; - -error: - kfree(state); - return NULL; -} - -static int stb6100_release(struct dvb_frontend *fe) -{ - struct stb6100_state *state = fe->tuner_priv; - - fe->tuner_priv = NULL; - kfree(state); - - return 0; -} - -EXPORT_SYMBOL(stb6100_attach); -MODULE_PARM_DESC(verbose, "Set Verbosity level"); - -MODULE_AUTHOR("Manu Abraham"); -MODULE_DESCRIPTION("STB6100 Silicon tuner"); -MODULE_LICENSE("GPL"); |