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path: root/drivers/media/common/tuners/max2165.c
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Diffstat (limited to 'drivers/media/common/tuners/max2165.c')
-rw-r--r--drivers/media/common/tuners/max2165.c433
1 files changed, 0 insertions, 433 deletions
diff --git a/drivers/media/common/tuners/max2165.c b/drivers/media/common/tuners/max2165.c
deleted file mode 100644
index ba84936aafd6..000000000000
--- a/drivers/media/common/tuners/max2165.c
+++ /dev/null
@@ -1,433 +0,0 @@
-/*
- * Driver for Maxim MAX2165 silicon tuner
- *
- * Copyright (c) 2009 David T. L. Wong <davidtlwong@gmail.com>
- *
- * 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/module.h>
-#include <linux/moduleparam.h>
-#include <linux/videodev2.h>
-#include <linux/delay.h>
-#include <linux/dvb/frontend.h>
-#include <linux/i2c.h>
-#include <linux/slab.h>
-
-#include "dvb_frontend.h"
-
-#include "max2165.h"
-#include "max2165_priv.h"
-#include "tuner-i2c.h"
-
-#define dprintk(args...) \
- do { \
- if (debug) \
- printk(KERN_DEBUG "max2165: " args); \
- } while (0)
-
-static int debug;
-module_param(debug, int, 0644);
-MODULE_PARM_DESC(debug, "Turn on/off debugging (default:off).");
-
-static int max2165_write_reg(struct max2165_priv *priv, u8 reg, u8 data)
-{
- int ret;
- u8 buf[] = { reg, data };
- struct i2c_msg msg = { .flags = 0, .buf = buf, .len = 2 };
-
- msg.addr = priv->config->i2c_address;
-
- if (debug >= 2)
- dprintk("%s: reg=0x%02X, data=0x%02X\n", __func__, reg, data);
-
- ret = i2c_transfer(priv->i2c, &msg, 1);
-
- if (ret != 1)
- dprintk("%s: error reg=0x%x, data=0x%x, ret=%i\n",
- __func__, reg, data, ret);
-
- return (ret != 1) ? -EIO : 0;
-}
-
-static int max2165_read_reg(struct max2165_priv *priv, u8 reg, u8 *p_data)
-{
- int ret;
- u8 dev_addr = priv->config->i2c_address;
-
- u8 b0[] = { reg };
- u8 b1[] = { 0 };
- struct i2c_msg msg[] = {
- { .addr = dev_addr, .flags = 0, .buf = b0, .len = 1 },
- { .addr = dev_addr, .flags = I2C_M_RD, .buf = b1, .len = 1 },
- };
-
- ret = i2c_transfer(priv->i2c, msg, 2);
- if (ret != 2) {
- dprintk("%s: error reg=0x%x, ret=%i\n", __func__, reg, ret);
- return -EIO;
- }
-
- *p_data = b1[0];
- if (debug >= 2)
- dprintk("%s: reg=0x%02X, data=0x%02X\n",
- __func__, reg, b1[0]);
- return 0;
-}
-
-static int max2165_mask_write_reg(struct max2165_priv *priv, u8 reg,
- u8 mask, u8 data)
-{
- int ret;
- u8 v;
-
- data &= mask;
- ret = max2165_read_reg(priv, reg, &v);
- if (ret != 0)
- return ret;
- v &= ~mask;
- v |= data;
- ret = max2165_write_reg(priv, reg, v);
-
- return ret;
-}
-
-static int max2165_read_rom_table(struct max2165_priv *priv)
-{
- u8 dat[3];
- int i;
-
- for (i = 0; i < 3; i++) {
- max2165_write_reg(priv, REG_ROM_TABLE_ADDR, i + 1);
- max2165_read_reg(priv, REG_ROM_TABLE_DATA, &dat[i]);
- }
-
- priv->tf_ntch_low_cfg = dat[0] >> 4;
- priv->tf_ntch_hi_cfg = dat[0] & 0x0F;
- priv->tf_balun_low_ref = dat[1] & 0x0F;
- priv->tf_balun_hi_ref = dat[1] >> 4;
- priv->bb_filter_7mhz_cfg = dat[2] & 0x0F;
- priv->bb_filter_8mhz_cfg = dat[2] >> 4;
-
- dprintk("tf_ntch_low_cfg = 0x%X\n", priv->tf_ntch_low_cfg);
- dprintk("tf_ntch_hi_cfg = 0x%X\n", priv->tf_ntch_hi_cfg);
- dprintk("tf_balun_low_ref = 0x%X\n", priv->tf_balun_low_ref);
- dprintk("tf_balun_hi_ref = 0x%X\n", priv->tf_balun_hi_ref);
- dprintk("bb_filter_7mhz_cfg = 0x%X\n", priv->bb_filter_7mhz_cfg);
- dprintk("bb_filter_8mhz_cfg = 0x%X\n", priv->bb_filter_8mhz_cfg);
-
- return 0;
-}
-
-static int max2165_set_osc(struct max2165_priv *priv, u8 osc /*MHz*/)
-{
- u8 v;
-
- v = (osc / 2);
- if (v == 2)
- v = 0x7;
- else
- v -= 8;
-
- max2165_mask_write_reg(priv, REG_PLL_CFG, 0x07, v);
-
- return 0;
-}
-
-static int max2165_set_bandwidth(struct max2165_priv *priv, u32 bw)
-{
- u8 val;
-
- if (bw == 8000000)
- val = priv->bb_filter_8mhz_cfg;
- else
- val = priv->bb_filter_7mhz_cfg;
-
- max2165_mask_write_reg(priv, REG_BASEBAND_CTRL, 0xF0, val << 4);
-
- return 0;
-}
-
-int fixpt_div32(u32 dividend, u32 divisor, u32 *quotient, u32 *fraction)
-{
- u32 remainder;
- u32 q, f = 0;
- int i;
-
- if (0 == divisor)
- return -EINVAL;
-
- q = dividend / divisor;
- remainder = dividend - q * divisor;
-
- for (i = 0; i < 31; i++) {
- remainder <<= 1;
- if (remainder >= divisor) {
- f += 1;
- remainder -= divisor;
- }
- f <<= 1;
- }
-
- *quotient = q;
- *fraction = f;
-
- return 0;
-}
-
-static int max2165_set_rf(struct max2165_priv *priv, u32 freq)
-{
- u8 tf;
- u8 tf_ntch;
- u32 t;
- u32 quotient, fraction;
- int ret;
-
- /* Set PLL divider according to RF frequency */
- ret = fixpt_div32(freq / 1000, priv->config->osc_clk * 1000,
- &quotient, &fraction);
- if (ret != 0)
- return ret;
-
- /* 20-bit fraction */
- fraction >>= 12;
-
- max2165_write_reg(priv, REG_NDIV_INT, quotient);
- max2165_mask_write_reg(priv, REG_NDIV_FRAC2, 0x0F, fraction >> 16);
- max2165_write_reg(priv, REG_NDIV_FRAC1, fraction >> 8);
- max2165_write_reg(priv, REG_NDIV_FRAC0, fraction);
-
- /* Norch Filter */
- tf_ntch = (freq < 725000000) ?
- priv->tf_ntch_low_cfg : priv->tf_ntch_hi_cfg;
-
- /* Tracking filter balun */
- t = priv->tf_balun_low_ref;
- t += (priv->tf_balun_hi_ref - priv->tf_balun_low_ref)
- * (freq / 1000 - 470000) / (780000 - 470000);
-
- tf = t;
- dprintk("tf = %X\n", tf);
- tf |= tf_ntch << 4;
-
- max2165_write_reg(priv, REG_TRACK_FILTER, tf);
-
- return 0;
-}
-
-static void max2165_debug_status(struct max2165_priv *priv)
-{
- u8 status, autotune;
- u8 auto_vco_success, auto_vco_active;
- u8 pll_locked;
- u8 dc_offset_low, dc_offset_hi;
- u8 signal_lv_over_threshold;
- u8 vco, vco_sub_band, adc;
-
- max2165_read_reg(priv, REG_STATUS, &status);
- max2165_read_reg(priv, REG_AUTOTUNE, &autotune);
-
- auto_vco_success = (status >> 6) & 0x01;
- auto_vco_active = (status >> 5) & 0x01;
- pll_locked = (status >> 4) & 0x01;
- dc_offset_low = (status >> 3) & 0x01;
- dc_offset_hi = (status >> 2) & 0x01;
- signal_lv_over_threshold = status & 0x01;
-
- vco = autotune >> 6;
- vco_sub_band = (autotune >> 3) & 0x7;
- adc = autotune & 0x7;
-
- dprintk("auto VCO active: %d, auto VCO success: %d\n",
- auto_vco_active, auto_vco_success);
- dprintk("PLL locked: %d\n", pll_locked);
- dprintk("DC offset low: %d, DC offset high: %d\n",
- dc_offset_low, dc_offset_hi);
- dprintk("Signal lvl over threshold: %d\n", signal_lv_over_threshold);
- dprintk("VCO: %d, VCO Sub-band: %d, ADC: %d\n", vco, vco_sub_band, adc);
-}
-
-static int max2165_set_params(struct dvb_frontend *fe)
-{
- struct max2165_priv *priv = fe->tuner_priv;
- struct dtv_frontend_properties *c = &fe->dtv_property_cache;
- int ret;
-
- switch (c->bandwidth_hz) {
- case 7000000:
- case 8000000:
- priv->frequency = c->frequency;
- break;
- default:
- printk(KERN_INFO "MAX2165: bandwidth %d Hz not supported.\n",
- c->bandwidth_hz);
- return -EINVAL;
- }
-
- dprintk("%s() frequency=%d\n", __func__, c->frequency);
-
- if (fe->ops.i2c_gate_ctrl)
- fe->ops.i2c_gate_ctrl(fe, 1);
- max2165_set_bandwidth(priv, c->bandwidth_hz);
- ret = max2165_set_rf(priv, priv->frequency);
- mdelay(50);
- max2165_debug_status(priv);
- if (fe->ops.i2c_gate_ctrl)
- fe->ops.i2c_gate_ctrl(fe, 0);
-
- if (ret != 0)
- return -EREMOTEIO;
-
- return 0;
-}
-
-static int max2165_get_frequency(struct dvb_frontend *fe, u32 *freq)
-{
- struct max2165_priv *priv = fe->tuner_priv;
- dprintk("%s()\n", __func__);
- *freq = priv->frequency;
- return 0;
-}
-
-static int max2165_get_bandwidth(struct dvb_frontend *fe, u32 *bw)
-{
- struct max2165_priv *priv = fe->tuner_priv;
- dprintk("%s()\n", __func__);
-
- *bw = priv->bandwidth;
- return 0;
-}
-
-static int max2165_get_status(struct dvb_frontend *fe, u32 *status)
-{
- struct max2165_priv *priv = fe->tuner_priv;
- u16 lock_status = 0;
-
- dprintk("%s()\n", __func__);
-
- if (fe->ops.i2c_gate_ctrl)
- fe->ops.i2c_gate_ctrl(fe, 1);
-
- max2165_debug_status(priv);
- *status = lock_status;
-
- if (fe->ops.i2c_gate_ctrl)
- fe->ops.i2c_gate_ctrl(fe, 0);
-
- return 0;
-}
-
-static int max2165_sleep(struct dvb_frontend *fe)
-{
- dprintk("%s()\n", __func__);
- return 0;
-}
-
-static int max2165_init(struct dvb_frontend *fe)
-{
- struct max2165_priv *priv = fe->tuner_priv;
- dprintk("%s()\n", __func__);
-
- if (fe->ops.i2c_gate_ctrl)
- fe->ops.i2c_gate_ctrl(fe, 1);
-
- /* Setup initial values */
- /* Fractional Mode on */
- max2165_write_reg(priv, REG_NDIV_FRAC2, 0x18);
- /* LNA on */
- max2165_write_reg(priv, REG_LNA, 0x01);
- max2165_write_reg(priv, REG_PLL_CFG, 0x7A);
- max2165_write_reg(priv, REG_TEST, 0x08);
- max2165_write_reg(priv, REG_SHUTDOWN, 0x40);
- max2165_write_reg(priv, REG_VCO_CTRL, 0x84);
- max2165_write_reg(priv, REG_BASEBAND_CTRL, 0xC3);
- max2165_write_reg(priv, REG_DC_OFFSET_CTRL, 0x75);
- max2165_write_reg(priv, REG_DC_OFFSET_DAC, 0x00);
- max2165_write_reg(priv, REG_ROM_TABLE_ADDR, 0x00);
-
- max2165_set_osc(priv, priv->config->osc_clk);
-
- max2165_read_rom_table(priv);
-
- max2165_set_bandwidth(priv, 8000000);
-
- if (fe->ops.i2c_gate_ctrl)
- fe->ops.i2c_gate_ctrl(fe, 0);
-
- return 0;
-}
-
-static int max2165_release(struct dvb_frontend *fe)
-{
- struct max2165_priv *priv = fe->tuner_priv;
- dprintk("%s()\n", __func__);
-
- kfree(priv);
- fe->tuner_priv = NULL;
-
- return 0;
-}
-
-static const struct dvb_tuner_ops max2165_tuner_ops = {
- .info = {
- .name = "Maxim MAX2165",
- .frequency_min = 470000000,
- .frequency_max = 780000000,
- .frequency_step = 50000,
- },
-
- .release = max2165_release,
- .init = max2165_init,
- .sleep = max2165_sleep,
-
- .set_params = max2165_set_params,
- .set_analog_params = NULL,
- .get_frequency = max2165_get_frequency,
- .get_bandwidth = max2165_get_bandwidth,
- .get_status = max2165_get_status
-};
-
-struct dvb_frontend *max2165_attach(struct dvb_frontend *fe,
- struct i2c_adapter *i2c,
- struct max2165_config *cfg)
-{
- struct max2165_priv *priv = NULL;
-
- dprintk("%s(%d-%04x)\n", __func__,
- i2c ? i2c_adapter_id(i2c) : -1,
- cfg ? cfg->i2c_address : -1);
-
- priv = kzalloc(sizeof(struct max2165_priv), GFP_KERNEL);
- if (priv == NULL)
- return NULL;
-
- memcpy(&fe->ops.tuner_ops, &max2165_tuner_ops,
- sizeof(struct dvb_tuner_ops));
-
- priv->config = cfg;
- priv->i2c = i2c;
- fe->tuner_priv = priv;
-
- max2165_init(fe);
- max2165_debug_status(priv);
-
- return fe;
-}
-EXPORT_SYMBOL(max2165_attach);
-
-MODULE_AUTHOR("David T. L. Wong <davidtlwong@gmail.com>");
-MODULE_DESCRIPTION("Maxim MAX2165 silicon tuner driver");
-MODULE_LICENSE("GPL");
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-23 22:47:59 +0100