Em Mon, 9 Apr 2018 02:39:50 +0900
tskd08@xxxxxxxxx escreveu:
> From: Akihiro Tsukada <tskd08@xxxxxxxxx>
>
> The tuner is used in Earthsoft PT1/PT2 DVB boards,
> and the driver was extraced from (the former) va1j5jf8007s.c of PT1.
> it might contain PT1 specific configs.
>
> Signed-off-by: Akihiro Tsukada <tskd08@xxxxxxxxx>
Please add yourself to MAINTAINERS file for this driver
(and for other drivers you wrote).
> ---
> Changes since v2:
> - none
>
> Changes since v1:
> - none
>
> drivers/media/tuners/Kconfig | 7 +
> drivers/media/tuners/Makefile | 1 +
> drivers/media/tuners/qm1d1b0004.c | 264 ++++++++++++++++++++++++++++++
> drivers/media/tuners/qm1d1b0004.h | 24 +++
> 4 files changed, 296 insertions(+)
> create mode 100644 drivers/media/tuners/qm1d1b0004.c
> create mode 100644 drivers/media/tuners/qm1d1b0004.h
>
> diff --git a/drivers/media/tuners/Kconfig b/drivers/media/tuners/Kconfig
> index 6687514df97..147f3cd0bb9 100644
> --- a/drivers/media/tuners/Kconfig
> +++ b/drivers/media/tuners/Kconfig
> @@ -284,4 +284,11 @@ config MEDIA_TUNER_QM1D1C0042
> default m if !MEDIA_SUBDRV_AUTOSELECT
> help
> Sharp QM1D1C0042 trellis coded 8PSK tuner driver.
> +
> +config MEDIA_TUNER_QM1D1B0004
> + tristate "Sharp QM1D1B0004 tuner"
> + depends on MEDIA_SUPPORT && I2C
> + default m if !MEDIA_SUBDRV_AUTOSELECT
> + help
> + Sharp QM1D1B0004 ISDB-S tuner driver.
> endmenu
> diff --git a/drivers/media/tuners/Makefile b/drivers/media/tuners/Makefile
> index 0ff21f1c7ee..7b4f8423501 100644
> --- a/drivers/media/tuners/Makefile
> +++ b/drivers/media/tuners/Makefile
> @@ -41,6 +41,7 @@ obj-$(CONFIG_MEDIA_TUNER_IT913X) += it913x.o
> obj-$(CONFIG_MEDIA_TUNER_R820T) += r820t.o
> obj-$(CONFIG_MEDIA_TUNER_MXL301RF) += mxl301rf.o
> obj-$(CONFIG_MEDIA_TUNER_QM1D1C0042) += qm1d1c0042.o
> +obj-$(CONFIG_MEDIA_TUNER_QM1D1B0004) += qm1d1b0004.o
> obj-$(CONFIG_MEDIA_TUNER_M88RS6000T) += m88rs6000t.o
> obj-$(CONFIG_MEDIA_TUNER_TDA18250) += tda18250.o
>
> diff --git a/drivers/media/tuners/qm1d1b0004.c b/drivers/media/tuners/qm1d1b0004.c
> new file mode 100644
> index 00000000000..9dac1b875c1
> --- /dev/null
> +++ b/drivers/media/tuners/qm1d1b0004.c
> @@ -0,0 +1,264 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Sharp QM1D1B0004 satellite tuner
> + *
> + * Copyright (C) 2014 Akihiro Tsukada <tskd08@xxxxxxxxx>
> + *
> + * based on (former) drivers/media/pci/pt1/va1j5jf8007s.c.
> + */
> +
> +/*
> + * Note:
> + * Since the data-sheet of this tuner chip is not available,
> + * this driver lacks some tuner_ops and config options.
> + * In addition, the implementation might be dependent on the specific use
> + * in the FE module: VA1J5JF8007S and/or in the product: Earthsoft PT1/PT2.
> + */
> +
> +#include <linux/kernel.h>
> +#include <linux/module.h>
> +#include <media/dvb_frontend.h>
> +#include "qm1d1b0004.h"
> +
> +/*
> + * Tuner I/F (copied from the former va1j5jf8007s.c)
> + * b[0] I2C addr
> + * b[1] "0":1, BG:2, divider_quotient[7:3]:5
> + * b[2] divider_quotient[2:0]:3, divider_remainder:5
> + * b[3] "111":3, LPF[3:2]:2, TM:1, "0":1, REF:1
> + * b[4] BANDX, PSC:1, LPF[1:0]:2, DIV:1, "0":1
> + *
> + * PLL frequency step :=
> + * REF == 0 -> PLL XTL frequency(4MHz) / 8
> + * REF == 1 -> PLL XTL frequency(4MHz) / 4
> + *
> + * PreScaler :=
> + * PSC == 0 -> x32
> + * PSC == 1 -> x16
> + *
> + * divider_quotient := (frequency / PLL frequency step) / PreScaler
> + * divider_remainder := (frequency / PLL frequency step) % PreScaler
> + *
> + * LPF := LPF Frequency / 1000 / 2 - 2
> + * LPF Frequency @ baudrate=28.86Mbps = 30000
> + *
> + * band (1..9)
> + * band 1 (freq < 986000) -> DIV:1, BANDX:5, PSC:1
> + * band 2 (freq < 1072000) -> DIV:1, BANDX:6, PSC:1
> + * band 3 (freq < 1154000) -> DIV:1, BANDX:7, PSC:0
> + * band 4 (freq < 1291000) -> DIV:0, BANDX:1, PSC:0
> + * band 5 (freq < 1447000) -> DIV:0, BANDX:2, PSC:0
> + * band 6 (freq < 1615000) -> DIV:0, BANDX:3, PSC:0
> + * band 7 (freq < 1791000) -> DIV:0, BANDX:4, PSC:0
> + * band 8 (freq < 1972000) -> DIV:0, BANDX:5, PSC:0
> + * band 9 (freq < 2150000) -> DIV:0, BANDX:6, PSC:0
> + */
> +
> +#define QM1D1B0004_PSC_MASK (1 << 4)
> +
> +#define QM1D1B0004_XTL_FREQ 4000
> +#define QM1D1B0004_LPF_FALLBACK 30000
> +
> +static const struct qm1d1b0004_config default_cfg = {
> + .lpf_freq = QM1D1B0004_CFG_LPF_DFLT,
> + .half_step = false,
> +};
> +
> +struct qm1d1b0004_state {
> + struct qm1d1b0004_config cfg;
> + struct i2c_client *i2c;
> +};
> +
> +
> +struct qm1d1b0004_cb_map {
> + u32 frequency;
> + u8 cb;
> +};
> +
> +static const struct qm1d1b0004_cb_map cb_maps[] = {
> + { 986000, 0xb2 },
> + { 1072000, 0xd2 },
> + { 1154000, 0xe2 },
> + { 1291000, 0x20 },
> + { 1447000, 0x40 },
> + { 1615000, 0x60 },
> + { 1791000, 0x80 },
> + { 1972000, 0xa0 },
> +};
> +
> +static u8 lookup_cb(u32 frequency)
> +{
> + int i;
> + const struct qm1d1b0004_cb_map *map;
> +
> + for (i = 0; i < ARRAY_SIZE(cb_maps); i++) {
> + map = &cb_maps[i];
> + if (frequency < map->frequency)
> + return map->cb;
> + }
> + return 0xc0;
> +}
> +
> +static int qm1d1b0004_set_params(struct dvb_frontend *fe)
> +{
> + struct qm1d1b0004_state *state;
> + u32 frequency, pll, lpf_freq;
> + u16 word;
> + u8 buf[4], cb, lpf;
> + int ret;
> +
> + state = fe->tuner_priv;
> + frequency = fe->dtv_property_cache.frequency;
> +
> + pll = QM1D1B0004_XTL_FREQ / 4;
> + if (state->cfg.half_step)
> + pll /= 2;
> + word = DIV_ROUND_CLOSEST(frequency, pll);
> + cb = lookup_cb(frequency);
> + if (cb & QM1D1B0004_PSC_MASK)
> + word = (word << 1 & ~0x1f) | (word & 0x0f);
> +
> + /* step.1: set frequency with BG:2, TM:0(4MHZ), LPF:4MHz */
> + buf[0] = 0x40 | word >> 8;
> + buf[1] = word;
> + /* inconsisnten with the above I/F doc. maybe the doc is wrong */
> + buf[2] = 0xe0 | state->cfg.half_step;
> + buf[3] = cb;
> + ret = i2c_master_send(state->i2c, buf, 4);
> + if (ret < 0)
> + return ret;
> +
> + /* step.2: set TM:1 */
> + buf[0] = 0xe4 | state->cfg.half_step;
> + ret = i2c_master_send(state->i2c, buf, 1);
> + if (ret < 0)
> + return ret;
> + msleep(20);
> +
> + /* step.3: set LPF */
> + lpf_freq = state->cfg.lpf_freq;
> + if (lpf_freq == QM1D1B0004_CFG_LPF_DFLT)
> + lpf_freq = fe->dtv_property_cache.symbol_rate / 1000;
> + if (lpf_freq == 0)
> + lpf_freq = QM1D1B0004_LPF_FALLBACK;
> + lpf = DIV_ROUND_UP(lpf_freq, 2000) - 2;
> + buf[0] = 0xe4 | ((lpf & 0x0c) << 1) | state->cfg.half_step;
> + buf[1] = cb | ((lpf & 0x03) << 2);
> + ret = i2c_master_send(state->i2c, buf, 2);
> + if (ret < 0)
> + return ret;
> +
> + /* step.4: read PLL lock? */
> + buf[0] = 0;
> + ret = i2c_master_recv(state->i2c, buf, 1);
> + if (ret < 0)
> + return ret;
> + return 0;
> +}
> +
> +
> +static int qm1d1b0004_set_config(struct dvb_frontend *fe, void *priv_cfg)
> +{
> + struct qm1d1b0004_state *state;
> +
> + state = fe->tuner_priv;
> + memcpy(&state->cfg, priv_cfg, sizeof(state->cfg));
> + return 0;
> +}
> +
> +
> +static int qm1d1b0004_init(struct dvb_frontend *fe)
> +{
> + struct qm1d1b0004_state *state;
> + u8 buf[2] = {0xf8, 0x04};
> +
> + state = fe->tuner_priv;
> + if (state->cfg.half_step)
> + buf[0] |= 0x01;
> +
> + return i2c_master_send(state->i2c, buf, 2);
> +}
> +
> +
> +static const struct dvb_tuner_ops qm1d1b0004_ops = {
> + .info = {
> + .name = "Sharp qm1d1b0004",
> +
> + .frequency_min = 950000,
> + .frequency_max = 2150000,
> + },
> +
> + .init = qm1d1b0004_init,
> +
> + .set_params = qm1d1b0004_set_params,
> + .set_config = qm1d1b0004_set_config,
> +};
> +
> +static int
> +qm1d1b0004_probe(struct i2c_client *client, const struct i2c_device_id *id)
> +{
> + struct dvb_frontend *fe;
> + struct qm1d1b0004_config *cfg;
> + struct qm1d1b0004_state *state;
> + int ret;
> +
> + cfg = client->dev.platform_data;
> + fe = cfg->fe;
> + i2c_set_clientdata(client, fe);
> +
> + fe->tuner_priv = kzalloc(sizeof(struct qm1d1b0004_state), GFP_KERNEL);
> + if (!fe->tuner_priv) {
> + ret = -ENOMEM;
> + goto err_mem;
> + }
> +
> + memcpy(&fe->ops.tuner_ops, &qm1d1b0004_ops, sizeof(fe->ops.tuner_ops));
> +
> + state = fe->tuner_priv;
> + state->i2c = client;
> + ret = qm1d1b0004_set_config(fe, cfg);
> + if (ret != 0)
> + goto err_priv;
> +
> + dev_info(&client->dev, "Sharp QM1D1B0004 attached.\n");
> + return 0;
> +
> +err_priv:
> + kfree(fe->tuner_priv);
> +err_mem:
> + fe->tuner_priv = NULL;
> + return ret;
> +}
> +
> +static int qm1d1b0004_remove(struct i2c_client *client)
> +{
> + struct dvb_frontend *fe;
> +
> + fe = i2c_get_clientdata(client);
> + kfree(fe->tuner_priv);
> + fe->tuner_priv = NULL;
> + return 0;
> +}
> +
> +
> +static const struct i2c_device_id qm1d1b0004_id[] = {
> + {"qm1d1b0004", 0},
> + {}
> +};
> +
> +MODULE_DEVICE_TABLE(i2c, qm1d1b0004_id);
> +
> +static struct i2c_driver qm1d1b0004_driver = {
> + .driver = {
> + .name = "qm1d1b0004",
> + },
> + .probe = qm1d1b0004_probe,
> + .remove = qm1d1b0004_remove,
> + .id_table = qm1d1b0004_id,
> +};
> +
> +module_i2c_driver(qm1d1b0004_driver);
> +
> +MODULE_DESCRIPTION("Sharp QM1D1B0004");
> +MODULE_AUTHOR("Akihiro Tsukada");
> +MODULE_LICENSE("GPL");
> diff --git a/drivers/media/tuners/qm1d1b0004.h b/drivers/media/tuners/qm1d1b0004.h
> new file mode 100644
> index 00000000000..7734ed109a2
> --- /dev/null
> +++ b/drivers/media/tuners/qm1d1b0004.h
> @@ -0,0 +1,24 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/*
> + * Sharp QM1D1B0004 satellite tuner
> + *
> + * Copyright (C) 2014 Akihiro Tsukada <tskd08@xxxxxxxxx>
> + */
> +
> +#ifndef QM1D1B0004_H
> +#define QM1D1B0004_H
> +
> +#include <media/dvb_frontend.h>
> +
> +struct qm1d1b0004_config {
> + struct dvb_frontend *fe;
> +
> + u32 lpf_freq; /* LPF frequency[kHz]. Default: symbol rate */
> + bool half_step; /* use PLL frequency step of 500Hz istead of 1000Hz */
> +};
> +
> +/* special values indicating to use the default in qm1d1b0004_config */
> +#define QM1D1B0004_CFG_PLL_DFLT 0
> +#define QM1D1B0004_CFG_LPF_DFLT 0
> +
> +#endif
Thanks,
Mauro
