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path: root/drivers/media/common/tuners/mc44s803.c
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Diffstat (limited to 'drivers/media/common/tuners/mc44s803.c')
-rw-r--r--drivers/media/common/tuners/mc44s803.c372
1 files changed, 0 insertions, 372 deletions
diff --git a/drivers/media/common/tuners/mc44s803.c b/drivers/media/common/tuners/mc44s803.c
deleted file mode 100644
index 5ddce7e326f7..000000000000
--- a/drivers/media/common/tuners/mc44s803.c
+++ /dev/null
@@ -1,372 +0,0 @@
-/*
- * Driver for Freescale MC44S803 Low Power CMOS Broadband Tuner
- *
- * Copyright (c) 2009 Jochen Friedrich <jochen@scram.de>
- *
- * 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/delay.h>
-#include <linux/dvb/frontend.h>
-#include <linux/i2c.h>
-#include <linux/slab.h>
-
-#include "dvb_frontend.h"
-
-#include "mc44s803.h"
-#include "mc44s803_priv.h"
-
-#define mc_printk(level, format, arg...) \
- printk(level "mc44s803: " format , ## arg)
-
-/* Writes a single register */
-static int mc44s803_writereg(struct mc44s803_priv *priv, u32 val)
-{
- u8 buf[3];
- struct i2c_msg msg = {
- .addr = priv->cfg->i2c_address, .flags = 0, .buf = buf, .len = 3
- };
-
- buf[0] = (val & 0xff0000) >> 16;
- buf[1] = (val & 0xff00) >> 8;
- buf[2] = (val & 0xff);
-
- if (i2c_transfer(priv->i2c, &msg, 1) != 1) {
- mc_printk(KERN_WARNING, "I2C write failed\n");
- return -EREMOTEIO;
- }
- return 0;
-}
-
-/* Reads a single register */
-static int mc44s803_readreg(struct mc44s803_priv *priv, u8 reg, u32 *val)
-{
- u32 wval;
- u8 buf[3];
- int ret;
- struct i2c_msg msg[] = {
- { .addr = priv->cfg->i2c_address, .flags = I2C_M_RD,
- .buf = buf, .len = 3 },
- };
-
- wval = MC44S803_REG_SM(MC44S803_REG_DATAREG, MC44S803_ADDR) |
- MC44S803_REG_SM(reg, MC44S803_D);
-
- ret = mc44s803_writereg(priv, wval);
- if (ret)
- return ret;
-
- if (i2c_transfer(priv->i2c, msg, 1) != 1) {
- mc_printk(KERN_WARNING, "I2C read failed\n");
- return -EREMOTEIO;
- }
-
- *val = (buf[0] << 16) | (buf[1] << 8) | buf[2];
-
- return 0;
-}
-
-static int mc44s803_release(struct dvb_frontend *fe)
-{
- struct mc44s803_priv *priv = fe->tuner_priv;
-
- fe->tuner_priv = NULL;
- kfree(priv);
-
- return 0;
-}
-
-static int mc44s803_init(struct dvb_frontend *fe)
-{
- struct mc44s803_priv *priv = fe->tuner_priv;
- u32 val;
- int err;
-
- if (fe->ops.i2c_gate_ctrl)
- fe->ops.i2c_gate_ctrl(fe, 1);
-
-/* Reset chip */
- val = MC44S803_REG_SM(MC44S803_REG_RESET, MC44S803_ADDR) |
- MC44S803_REG_SM(1, MC44S803_RS);
-
- err = mc44s803_writereg(priv, val);
- if (err)
- goto exit;
-
- val = MC44S803_REG_SM(MC44S803_REG_RESET, MC44S803_ADDR);
-
- err = mc44s803_writereg(priv, val);
- if (err)
- goto exit;
-
-/* Power Up and Start Osc */
-
- val = MC44S803_REG_SM(MC44S803_REG_REFOSC, MC44S803_ADDR) |
- MC44S803_REG_SM(0xC0, MC44S803_REFOSC) |
- MC44S803_REG_SM(1, MC44S803_OSCSEL);
-
- err = mc44s803_writereg(priv, val);
- if (err)
- goto exit;
-
- val = MC44S803_REG_SM(MC44S803_REG_POWER, MC44S803_ADDR) |
- MC44S803_REG_SM(0x200, MC44S803_POWER);
-
- err = mc44s803_writereg(priv, val);
- if (err)
- goto exit;
-
- msleep(10);
-
- val = MC44S803_REG_SM(MC44S803_REG_REFOSC, MC44S803_ADDR) |
- MC44S803_REG_SM(0x40, MC44S803_REFOSC) |
- MC44S803_REG_SM(1, MC44S803_OSCSEL);
-
- err = mc44s803_writereg(priv, val);
- if (err)
- goto exit;
-
- msleep(20);
-
-/* Setup Mixer */
-
- val = MC44S803_REG_SM(MC44S803_REG_MIXER, MC44S803_ADDR) |
- MC44S803_REG_SM(1, MC44S803_TRI_STATE) |
- MC44S803_REG_SM(0x7F, MC44S803_MIXER_RES);
-
- err = mc44s803_writereg(priv, val);
- if (err)
- goto exit;
-
-/* Setup Cirquit Adjust */
-
- val = MC44S803_REG_SM(MC44S803_REG_CIRCADJ, MC44S803_ADDR) |
- MC44S803_REG_SM(1, MC44S803_G1) |
- MC44S803_REG_SM(1, MC44S803_G3) |
- MC44S803_REG_SM(0x3, MC44S803_CIRCADJ_RES) |
- MC44S803_REG_SM(1, MC44S803_G6) |
- MC44S803_REG_SM(priv->cfg->dig_out, MC44S803_S1) |
- MC44S803_REG_SM(0x3, MC44S803_LP) |
- MC44S803_REG_SM(1, MC44S803_CLRF) |
- MC44S803_REG_SM(1, MC44S803_CLIF);
-
- err = mc44s803_writereg(priv, val);
- if (err)
- goto exit;
-
- val = MC44S803_REG_SM(MC44S803_REG_CIRCADJ, MC44S803_ADDR) |
- MC44S803_REG_SM(1, MC44S803_G1) |
- MC44S803_REG_SM(1, MC44S803_G3) |
- MC44S803_REG_SM(0x3, MC44S803_CIRCADJ_RES) |
- MC44S803_REG_SM(1, MC44S803_G6) |
- MC44S803_REG_SM(priv->cfg->dig_out, MC44S803_S1) |
- MC44S803_REG_SM(0x3, MC44S803_LP);
-
- err = mc44s803_writereg(priv, val);
- if (err)
- goto exit;
-
-/* Setup Digtune */
-
- val = MC44S803_REG_SM(MC44S803_REG_DIGTUNE, MC44S803_ADDR) |
- MC44S803_REG_SM(3, MC44S803_XOD);
-
- err = mc44s803_writereg(priv, val);
- if (err)
- goto exit;
-
-/* Setup AGC */
-
- val = MC44S803_REG_SM(MC44S803_REG_LNAAGC, MC44S803_ADDR) |
- MC44S803_REG_SM(1, MC44S803_AT1) |
- MC44S803_REG_SM(1, MC44S803_AT2) |
- MC44S803_REG_SM(1, MC44S803_AGC_AN_DIG) |
- MC44S803_REG_SM(1, MC44S803_AGC_READ_EN) |
- MC44S803_REG_SM(1, MC44S803_LNA0);
-
- err = mc44s803_writereg(priv, val);
- if (err)
- goto exit;
-
- if (fe->ops.i2c_gate_ctrl)
- fe->ops.i2c_gate_ctrl(fe, 0);
- return 0;
-
-exit:
- if (fe->ops.i2c_gate_ctrl)
- fe->ops.i2c_gate_ctrl(fe, 0);
-
- mc_printk(KERN_WARNING, "I/O Error\n");
- return err;
-}
-
-static int mc44s803_set_params(struct dvb_frontend *fe)
-{
- struct mc44s803_priv *priv = fe->tuner_priv;
- struct dtv_frontend_properties *c = &fe->dtv_property_cache;
- u32 r1, r2, n1, n2, lo1, lo2, freq, val;
- int err;
-
- priv->frequency = c->frequency;
-
- r1 = MC44S803_OSC / 1000000;
- r2 = MC44S803_OSC / 100000;
-
- n1 = (c->frequency + MC44S803_IF1 + 500000) / 1000000;
- freq = MC44S803_OSC / r1 * n1;
- lo1 = ((60 * n1) + (r1 / 2)) / r1;
- freq = freq - c->frequency;
-
- n2 = (freq - MC44S803_IF2 + 50000) / 100000;
- lo2 = ((60 * n2) + (r2 / 2)) / r2;
-
- if (fe->ops.i2c_gate_ctrl)
- fe->ops.i2c_gate_ctrl(fe, 1);
-
- val = MC44S803_REG_SM(MC44S803_REG_REFDIV, MC44S803_ADDR) |
- MC44S803_REG_SM(r1-1, MC44S803_R1) |
- MC44S803_REG_SM(r2-1, MC44S803_R2) |
- MC44S803_REG_SM(1, MC44S803_REFBUF_EN);
-
- err = mc44s803_writereg(priv, val);
- if (err)
- goto exit;
-
- val = MC44S803_REG_SM(MC44S803_REG_LO1, MC44S803_ADDR) |
- MC44S803_REG_SM(n1-2, MC44S803_LO1);
-
- err = mc44s803_writereg(priv, val);
- if (err)
- goto exit;
-
- val = MC44S803_REG_SM(MC44S803_REG_LO2, MC44S803_ADDR) |
- MC44S803_REG_SM(n2-2, MC44S803_LO2);
-
- err = mc44s803_writereg(priv, val);
- if (err)
- goto exit;
-
- val = MC44S803_REG_SM(MC44S803_REG_DIGTUNE, MC44S803_ADDR) |
- MC44S803_REG_SM(1, MC44S803_DA) |
- MC44S803_REG_SM(lo1, MC44S803_LO_REF) |
- MC44S803_REG_SM(1, MC44S803_AT);
-
- err = mc44s803_writereg(priv, val);
- if (err)
- goto exit;
-
- val = MC44S803_REG_SM(MC44S803_REG_DIGTUNE, MC44S803_ADDR) |
- MC44S803_REG_SM(2, MC44S803_DA) |
- MC44S803_REG_SM(lo2, MC44S803_LO_REF) |
- MC44S803_REG_SM(1, MC44S803_AT);
-
- err = mc44s803_writereg(priv, val);
- if (err)
- goto exit;
-
- if (fe->ops.i2c_gate_ctrl)
- fe->ops.i2c_gate_ctrl(fe, 0);
-
- return 0;
-
-exit:
- if (fe->ops.i2c_gate_ctrl)
- fe->ops.i2c_gate_ctrl(fe, 0);
-
- mc_printk(KERN_WARNING, "I/O Error\n");
- return err;
-}
-
-static int mc44s803_get_frequency(struct dvb_frontend *fe, u32 *frequency)
-{
- struct mc44s803_priv *priv = fe->tuner_priv;
- *frequency = priv->frequency;
- return 0;
-}
-
-static const struct dvb_tuner_ops mc44s803_tuner_ops = {
- .info = {
- .name = "Freescale MC44S803",
- .frequency_min = 48000000,
- .frequency_max = 1000000000,
- .frequency_step = 100000,
- },
-
- .release = mc44s803_release,
- .init = mc44s803_init,
- .set_params = mc44s803_set_params,
- .get_frequency = mc44s803_get_frequency
-};
-
-/* This functions tries to identify a MC44S803 tuner by reading the ID
- register. This is hasty. */
-struct dvb_frontend *mc44s803_attach(struct dvb_frontend *fe,
- struct i2c_adapter *i2c, struct mc44s803_config *cfg)
-{
- struct mc44s803_priv *priv;
- u32 reg;
- u8 id;
- int ret;
-
- reg = 0;
-
- priv = kzalloc(sizeof(struct mc44s803_priv), GFP_KERNEL);
- if (priv == NULL)
- return NULL;
-
- priv->cfg = cfg;
- priv->i2c = i2c;
- priv->fe = fe;
-
- if (fe->ops.i2c_gate_ctrl)
- fe->ops.i2c_gate_ctrl(fe, 1); /* open i2c_gate */
-
- ret = mc44s803_readreg(priv, MC44S803_REG_ID, &reg);
- if (ret)
- goto error;
-
- id = MC44S803_REG_MS(reg, MC44S803_ID);
-
- if (id != 0x14) {
- mc_printk(KERN_ERR, "unsupported ID "
- "(%x should be 0x14)\n", id);
- goto error;
- }
-
- mc_printk(KERN_INFO, "successfully identified (ID = %x)\n", id);
- memcpy(&fe->ops.tuner_ops, &mc44s803_tuner_ops,
- sizeof(struct dvb_tuner_ops));
-
- fe->tuner_priv = priv;
-
- if (fe->ops.i2c_gate_ctrl)
- fe->ops.i2c_gate_ctrl(fe, 0); /* close i2c_gate */
-
- return fe;
-
-error:
- if (fe->ops.i2c_gate_ctrl)
- fe->ops.i2c_gate_ctrl(fe, 0); /* close i2c_gate */
-
- kfree(priv);
- return NULL;
-}
-EXPORT_SYMBOL(mc44s803_attach);
-
-MODULE_AUTHOR("Jochen Friedrich");
-MODULE_DESCRIPTION("Freescale MC44S803 silicon tuner driver");
-MODULE_LICENSE("GPL");
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-11 02:29:40 +0000