forked from luck/tmp_suning_uos_patched
a3f90c75b8
Right now, satellite tuner drivers specify frequencies in kHz, while terrestrial/cable ones specify in Hz. That's confusing for developers. However, the main problem is that universal tuners capable of handling both satellite and non-satelite delivery systems are appearing. We end by needing to hack the drivers in order to support such hybrid tuners. So, convert everything to specify tuner frequencies in Hz. Plese notice that a similar patch is also needed for frontends. Tested-by: Katsuhiro Suzuki <suzuki.katsuhiro@socionext.com> Acked-by: Michael Büsch <m@bues.ch> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
467 lines
10 KiB
C
467 lines
10 KiB
C
/*
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* ITE IT913X silicon tuner driver
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*
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* Copyright (C) 2011 Malcolm Priestley (tvboxspy@gmail.com)
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* IT9137 Copyright (C) ITE Tech Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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*
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* GNU General Public License for more details.
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*/
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#include "it913x.h"
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#include <linux/platform_device.h>
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#include <linux/regmap.h>
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struct it913x_dev {
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struct platform_device *pdev;
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struct regmap *regmap;
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struct dvb_frontend *fe;
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u8 chip_ver:2;
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u8 role:2;
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u16 xtal;
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u8 fdiv;
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u8 clk_mode;
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u32 fn_min;
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bool active;
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};
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static int it913x_init(struct dvb_frontend *fe)
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{
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struct it913x_dev *dev = fe->tuner_priv;
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struct platform_device *pdev = dev->pdev;
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int ret;
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unsigned int utmp;
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u8 iqik_m_cal, nv_val, buf[2];
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static const u8 nv[] = {48, 32, 24, 16, 12, 8, 6, 4, 2};
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unsigned long timeout;
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dev_dbg(&pdev->dev, "role %u\n", dev->role);
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ret = regmap_write(dev->regmap, 0x80ec4c, 0x68);
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if (ret)
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goto err;
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usleep_range(10000, 100000);
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ret = regmap_read(dev->regmap, 0x80ec86, &utmp);
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if (ret)
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goto err;
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switch (utmp) {
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case 0:
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/* 12.000 MHz */
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dev->clk_mode = utmp;
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dev->xtal = 2000;
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dev->fdiv = 3;
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iqik_m_cal = 16;
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break;
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case 1:
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/* 20.480 MHz */
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dev->clk_mode = utmp;
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dev->xtal = 640;
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dev->fdiv = 1;
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iqik_m_cal = 6;
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break;
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default:
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dev_err(&pdev->dev, "unknown clock identifier %d\n", utmp);
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goto err;
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}
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ret = regmap_read(dev->regmap, 0x80ed03, &utmp);
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if (ret)
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goto err;
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else if (utmp < ARRAY_SIZE(nv))
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nv_val = nv[utmp];
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else
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nv_val = 2;
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#define TIMEOUT 50
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timeout = jiffies + msecs_to_jiffies(TIMEOUT);
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while (!time_after(jiffies, timeout)) {
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ret = regmap_bulk_read(dev->regmap, 0x80ed23, buf, 2);
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if (ret)
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goto err;
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utmp = (buf[1] << 8) | (buf[0] << 0);
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if (utmp)
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break;
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}
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dev_dbg(&pdev->dev, "r_fbc_m_bdry took %u ms, val %u\n",
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jiffies_to_msecs(jiffies) -
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(jiffies_to_msecs(timeout) - TIMEOUT), utmp);
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dev->fn_min = dev->xtal * utmp;
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dev->fn_min /= (dev->fdiv * nv_val);
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dev->fn_min *= 1000;
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dev_dbg(&pdev->dev, "fn_min %u\n", dev->fn_min);
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/*
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* Chip version BX never sets that flag so we just wait 50ms in that
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* case. It is possible poll BX similarly than AX and then timeout in
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* order to get 50ms delay, but that causes about 120 extra I2C
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* messages. As for now, we just wait and reduce IO.
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*/
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if (dev->chip_ver == 1) {
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#define TIMEOUT 50
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timeout = jiffies + msecs_to_jiffies(TIMEOUT);
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while (!time_after(jiffies, timeout)) {
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ret = regmap_read(dev->regmap, 0x80ec82, &utmp);
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if (ret)
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goto err;
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if (utmp)
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break;
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}
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dev_dbg(&pdev->dev, "p_tsm_init_mode took %u ms, val %u\n",
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jiffies_to_msecs(jiffies) -
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(jiffies_to_msecs(timeout) - TIMEOUT), utmp);
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} else {
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msleep(50);
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}
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ret = regmap_write(dev->regmap, 0x80ed81, iqik_m_cal);
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if (ret)
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goto err;
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ret = regmap_write(dev->regmap, 0x80ec57, 0x00);
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if (ret)
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goto err;
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ret = regmap_write(dev->regmap, 0x80ec58, 0x00);
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if (ret)
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goto err;
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ret = regmap_write(dev->regmap, 0x80ec40, 0x01);
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if (ret)
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goto err;
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dev->active = true;
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return 0;
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err:
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dev_dbg(&pdev->dev, "failed %d\n", ret);
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return ret;
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}
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static int it913x_sleep(struct dvb_frontend *fe)
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{
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struct it913x_dev *dev = fe->tuner_priv;
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struct platform_device *pdev = dev->pdev;
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int ret, len;
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dev_dbg(&pdev->dev, "role %u\n", dev->role);
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dev->active = false;
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ret = regmap_bulk_write(dev->regmap, 0x80ec40, "\x00", 1);
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if (ret)
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goto err;
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/*
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* Writing '0x00' to master tuner register '0x80ec08' causes slave tuner
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* communication lost. Due to that, we cannot put master full sleep.
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*/
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if (dev->role == IT913X_ROLE_DUAL_MASTER)
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len = 4;
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else
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len = 15;
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dev_dbg(&pdev->dev, "role %u, len %d\n", dev->role, len);
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ret = regmap_bulk_write(dev->regmap, 0x80ec02,
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"\x3f\x1f\x3f\x3e\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00",
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len);
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if (ret)
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goto err;
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ret = regmap_bulk_write(dev->regmap, 0x80ec12, "\x00\x00\x00\x00", 4);
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if (ret)
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goto err;
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ret = regmap_bulk_write(dev->regmap, 0x80ec17,
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"\x00\x00\x00\x00\x00\x00\x00\x00\x00", 9);
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if (ret)
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goto err;
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ret = regmap_bulk_write(dev->regmap, 0x80ec22,
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"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", 10);
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if (ret)
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goto err;
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ret = regmap_bulk_write(dev->regmap, 0x80ec20, "\x00", 1);
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if (ret)
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goto err;
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ret = regmap_bulk_write(dev->regmap, 0x80ec3f, "\x01", 1);
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if (ret)
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goto err;
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return 0;
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err:
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dev_dbg(&pdev->dev, "failed %d\n", ret);
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return ret;
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}
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static int it913x_set_params(struct dvb_frontend *fe)
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{
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struct it913x_dev *dev = fe->tuner_priv;
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struct platform_device *pdev = dev->pdev;
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struct dtv_frontend_properties *c = &fe->dtv_property_cache;
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int ret;
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unsigned int utmp;
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u32 pre_lo_freq, t_cal_freq;
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u16 iqik_m_cal, n_div;
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u8 u8tmp, n, l_band, lna_band;
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dev_dbg(&pdev->dev, "role=%u, frequency %u, bandwidth_hz %u\n",
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dev->role, c->frequency, c->bandwidth_hz);
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if (!dev->active) {
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ret = -EINVAL;
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goto err;
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}
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if (c->frequency <= 74000000) {
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n_div = 48;
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n = 0;
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} else if (c->frequency <= 111000000) {
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n_div = 32;
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n = 1;
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} else if (c->frequency <= 148000000) {
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n_div = 24;
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n = 2;
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} else if (c->frequency <= 222000000) {
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n_div = 16;
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n = 3;
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} else if (c->frequency <= 296000000) {
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n_div = 12;
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n = 4;
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} else if (c->frequency <= 445000000) {
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n_div = 8;
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n = 5;
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} else if (c->frequency <= dev->fn_min) {
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n_div = 6;
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n = 6;
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} else if (c->frequency <= 950000000) {
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n_div = 4;
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n = 7;
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} else {
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n_div = 2;
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n = 0;
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}
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ret = regmap_read(dev->regmap, 0x80ed81, &utmp);
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if (ret)
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goto err;
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iqik_m_cal = utmp * n_div;
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if (utmp < 0x20) {
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if (dev->clk_mode == 0)
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iqik_m_cal = (iqik_m_cal * 9) >> 5;
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else
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iqik_m_cal >>= 1;
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} else {
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iqik_m_cal = 0x40 - iqik_m_cal;
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if (dev->clk_mode == 0)
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iqik_m_cal = ~((iqik_m_cal * 9) >> 5);
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else
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iqik_m_cal = ~(iqik_m_cal >> 1);
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}
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t_cal_freq = (c->frequency / 1000) * n_div * dev->fdiv;
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pre_lo_freq = t_cal_freq / dev->xtal;
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utmp = pre_lo_freq * dev->xtal;
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if ((t_cal_freq - utmp) >= (dev->xtal >> 1))
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pre_lo_freq++;
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pre_lo_freq += (u32) n << 13;
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/* Frequency OMEGA_IQIK_M_CAL_MID*/
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t_cal_freq = pre_lo_freq + (u32)iqik_m_cal;
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dev_dbg(&pdev->dev, "t_cal_freq %u, pre_lo_freq %u\n",
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t_cal_freq, pre_lo_freq);
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if (c->frequency <= 440000000) {
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l_band = 0;
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lna_band = 0;
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} else if (c->frequency <= 484000000) {
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l_band = 1;
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lna_band = 1;
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} else if (c->frequency <= 533000000) {
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l_band = 1;
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lna_band = 2;
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} else if (c->frequency <= 587000000) {
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l_band = 1;
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lna_band = 3;
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} else if (c->frequency <= 645000000) {
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l_band = 1;
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lna_band = 4;
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} else if (c->frequency <= 710000000) {
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l_band = 1;
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lna_band = 5;
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} else if (c->frequency <= 782000000) {
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l_band = 1;
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lna_band = 6;
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} else if (c->frequency <= 860000000) {
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l_band = 1;
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lna_band = 7;
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} else if (c->frequency <= 1492000000) {
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l_band = 1;
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lna_band = 0;
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} else if (c->frequency <= 1685000000) {
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l_band = 1;
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lna_band = 1;
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} else {
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ret = -EINVAL;
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goto err;
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}
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/* XXX: latest windows driver does not set that at all */
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ret = regmap_write(dev->regmap, 0x80ee06, lna_band);
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if (ret)
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goto err;
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if (c->bandwidth_hz <= 5000000)
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u8tmp = 0;
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else if (c->bandwidth_hz <= 6000000)
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u8tmp = 2;
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else if (c->bandwidth_hz <= 7000000)
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u8tmp = 4;
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else
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u8tmp = 6; /* 8000000 */
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ret = regmap_write(dev->regmap, 0x80ec56, u8tmp);
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if (ret)
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goto err;
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/* XXX: latest windows driver sets different value (a8 != 68) */
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ret = regmap_write(dev->regmap, 0x80ec4c, 0xa0 | (l_band << 3));
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if (ret)
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goto err;
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ret = regmap_write(dev->regmap, 0x80ec4d, (t_cal_freq >> 0) & 0xff);
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if (ret)
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goto err;
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ret = regmap_write(dev->regmap, 0x80ec4e, (t_cal_freq >> 8) & 0xff);
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if (ret)
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goto err;
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ret = regmap_write(dev->regmap, 0x80011e, (pre_lo_freq >> 0) & 0xff);
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if (ret)
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goto err;
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ret = regmap_write(dev->regmap, 0x80011f, (pre_lo_freq >> 8) & 0xff);
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if (ret)
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goto err;
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return 0;
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err:
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dev_dbg(&pdev->dev, "failed %d\n", ret);
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return ret;
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}
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static const struct dvb_tuner_ops it913x_tuner_ops = {
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.info = {
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.name = "ITE IT913X",
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.frequency_min_hz = 174 * MHz,
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.frequency_max_hz = 862 * MHz,
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},
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.init = it913x_init,
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.sleep = it913x_sleep,
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.set_params = it913x_set_params,
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};
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static int it913x_probe(struct platform_device *pdev)
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{
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struct it913x_platform_data *pdata = pdev->dev.platform_data;
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struct dvb_frontend *fe = pdata->fe;
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struct it913x_dev *dev;
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const struct platform_device_id *id = platform_get_device_id(pdev);
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int ret;
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char *chip_ver_str;
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dev = kzalloc(sizeof(struct it913x_dev), GFP_KERNEL);
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if (dev == NULL) {
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ret = -ENOMEM;
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dev_err(&pdev->dev, "kzalloc() failed\n");
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goto err;
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}
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dev->pdev = pdev;
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dev->regmap = pdata->regmap;
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dev->fe = pdata->fe;
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dev->chip_ver = id->driver_data;
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dev->role = pdata->role;
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fe->tuner_priv = dev;
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memcpy(&fe->ops.tuner_ops, &it913x_tuner_ops,
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sizeof(struct dvb_tuner_ops));
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platform_set_drvdata(pdev, dev);
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if (dev->chip_ver == 1)
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chip_ver_str = "AX";
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else if (dev->chip_ver == 2)
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chip_ver_str = "BX";
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else
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chip_ver_str = "??";
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dev_info(&pdev->dev, "ITE IT913X %s successfully attached\n",
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chip_ver_str);
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dev_dbg(&pdev->dev, "chip_ver %u, role %u\n", dev->chip_ver, dev->role);
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return 0;
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err:
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dev_dbg(&pdev->dev, "failed %d\n", ret);
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return ret;
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}
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static int it913x_remove(struct platform_device *pdev)
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{
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struct it913x_dev *dev = platform_get_drvdata(pdev);
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struct dvb_frontend *fe = dev->fe;
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dev_dbg(&pdev->dev, "\n");
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memset(&fe->ops.tuner_ops, 0, sizeof(struct dvb_tuner_ops));
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fe->tuner_priv = NULL;
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kfree(dev);
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return 0;
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}
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static const struct platform_device_id it913x_id_table[] = {
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{"it9133ax-tuner", 1},
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{"it9133bx-tuner", 2},
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{},
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};
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MODULE_DEVICE_TABLE(platform, it913x_id_table);
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static struct platform_driver it913x_driver = {
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.driver = {
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.name = "it913x",
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.suppress_bind_attrs = true,
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},
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.probe = it913x_probe,
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.remove = it913x_remove,
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.id_table = it913x_id_table,
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};
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module_platform_driver(it913x_driver);
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MODULE_DESCRIPTION("ITE IT913X silicon tuner driver");
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MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
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MODULE_LICENSE("GPL");
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