[PATCH 06/25] added drx39xxj for pctv80e support

[Patrick Dickey <pdickeybeta@gmail.com>]

---
 drivers/media/dvb/frontends/drx39xxj.c |  464 ++++++++++++++++++++++++++++++++
 1 files changed, 464 insertions(+), 0 deletions(-)
 create mode 100644 drivers/media/dvb/frontends/drx39xxj.c

diff --git a/drivers/media/dvb/frontends/drx39xxj.c b/drivers/media/dvb/frontends/drx39xxj.c
new file mode 100644
index 0000000..a74e81b
--- /dev/null
+++ b/drivers/media/dvb/frontends/drx39xxj.c
@@ -0,0 +1,464 @@
+/*
+ *  Driver for Micronas DRX39xx family (drx3933j)
+ *
+ *  Written by Devin Heitmueller <devin.heitmueller@kernellabs.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/init.h>
+#include <linux/string.h>
+#include <linux/slab.h>
+
+#include "dvb_frontend.h"
+#include "drx39xxj.h"
+#include "drx_driver.h"
+#include "bsp_types.h"
+#include "bsp_tuner.h"
+#include "drxj_mc.h"
+#include "drxj.h"
+
+static int drx39xxj_set_powerstate(struct dvb_frontend* fe, int enable)
+{
+	struct drx39xxj_state *state = fe->demodulator_priv;
+	DRXDemodInstance_t *demod = state->demod;
+	DRXStatus_t result;
+	DRXPowerMode_t powerMode;
+
+	if (enable)
+		powerMode = DRX_POWER_UP;
+	else
+		powerMode = DRX_POWER_DOWN;
+
+	result = DRX_Ctrl(demod, DRX_CTRL_POWER_MODE, &powerMode);
+	if (result != DRX_STS_OK) {
+		printk("Power state change failed\n");
+		return 0;
+	}
+
+	state->powered_up = enable;
+	return 0;
+}
+
+static int drx39xxj_read_status(struct dvb_frontend* fe, fe_status_t* status)
+{
+	struct drx39xxj_state* state = fe->demodulator_priv;
+	DRXDemodInstance_t  *demod = state->demod;
+	DRXStatus_t result;
+	DRXLockStatus_t lock_status;
+
+	*status = 0;
+
+	result = DRX_Ctrl(demod, DRX_CTRL_LOCK_STATUS, &lock_status);
+	if (result != DRX_STS_OK) {
+		printk("drx39xxj: could not get lock status!\n");
+		*status = 0;
+	}
+
+	switch (lock_status) {
+	case DRX_NEVER_LOCK:
+		*status = 0;
+		printk("drx says NEVER_LOCK\n");
+		break;
+	case DRX_NOT_LOCKED:
+		*status = 0;
+		break;
+	case DRX_LOCK_STATE_1:
+	case DRX_LOCK_STATE_2:
+	case DRX_LOCK_STATE_3:
+	case DRX_LOCK_STATE_4:
+	case DRX_LOCK_STATE_5:
+	case DRX_LOCK_STATE_6:
+	case DRX_LOCK_STATE_7:
+	case DRX_LOCK_STATE_8:
+	case DRX_LOCK_STATE_9:
+		*status = FE_HAS_SIGNAL
+			| FE_HAS_CARRIER
+			| FE_HAS_VITERBI
+			| FE_HAS_SYNC;
+		break;
+	case DRX_LOCKED:
+		*status = FE_HAS_SIGNAL
+			| FE_HAS_CARRIER
+			| FE_HAS_VITERBI
+			| FE_HAS_SYNC
+			| FE_HAS_LOCK;
+		break;
+	default:
+		printk("Lock state unknown %d\n", lock_status);
+	}
+
+	return 0;
+}
+
+static int drx39xxj_read_ber(struct dvb_frontend* fe, u32* ber)
+{
+	struct drx39xxj_state* state = fe->demodulator_priv;
+	DRXDemodInstance_t  *demod = state->demod;
+	DRXStatus_t result;
+	DRXSigQuality_t sig_quality;
+
+	result = DRX_Ctrl(demod, DRX_CTRL_SIG_QUALITY, &sig_quality);
+	if (result != DRX_STS_OK) {
+		printk("drx39xxj: could not get ber!\n");
+		*ber = 0;
+		return 0;
+	}
+
+	*ber = sig_quality.postReedSolomonBER;
+	return 0;
+}
+
+static int drx39xxj_read_signal_strength(struct dvb_frontend* fe, u16* strength)
+{
+	struct drx39xxj_state* state = fe->demodulator_priv;
+	DRXDemodInstance_t  *demod = state->demod;
+	DRXStatus_t result;
+	DRXSigQuality_t sig_quality;
+
+	result = DRX_Ctrl(demod, DRX_CTRL_SIG_QUALITY, &sig_quality);
+	if (result != DRX_STS_OK) {
+		printk("drx39xxj: could not get signal strength!\n");
+		*strength = 0;
+		return 0;
+	}
+
+	/* 1-100% scaled to 0-65535 */
+	*strength = (sig_quality.indicator * 65535 / 100);
+	return 0;
+}
+
+static int drx39xxj_read_snr(struct dvb_frontend* fe, u16* snr)
+{
+	struct drx39xxj_state* state = fe->demodulator_priv;
+	DRXDemodInstance_t  *demod = state->demod;
+	DRXStatus_t result;
+	DRXSigQuality_t sig_quality;
+
+	result = DRX_Ctrl(demod, DRX_CTRL_SIG_QUALITY, &sig_quality);
+	if (result != DRX_STS_OK) {
+		printk("drx39xxj: could not read snr!\n");
+		*snr = 0;
+		return 0;
+	}
+
+	*snr = sig_quality.MER;
+	return 0;
+}
+
+static int drx39xxj_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks)
+{
+	struct drx39xxj_state* state = fe->demodulator_priv;
+	DRXDemodInstance_t  *demod = state->demod;
+	DRXStatus_t result;
+	DRXSigQuality_t sig_quality;
+
+	result = DRX_Ctrl(demod, DRX_CTRL_SIG_QUALITY, &sig_quality);
+	if (result != DRX_STS_OK) {
+		printk("drx39xxj: could not get uc blocks!\n");
+		*ucblocks = 0;
+		return 0;
+	}
+
+	*ucblocks = sig_quality.packetError;
+	return 0;
+}
+
+static int drx39xxj_get_frontend(struct dvb_frontend* fe,
+				struct dvb_frontend_parameters *p)
+{
+	return 0;
+}
+
+static int drx39xxj_set_frontend(struct dvb_frontend* fe,
+				struct dvb_frontend_parameters *p)
+{
+#ifdef DJH_DEBUG
+	int i;
+#endif
+
+	struct drx39xxj_state* state = fe->demodulator_priv;
+	DRXDemodInstance_t  *demod = state->demod;
+	DRXStandard_t standard = DRX_STANDARD_8VSB;
+	DRXChannel_t channel;
+	DRXStatus_t result;
+	DRXUIOData_t uioData;
+	DRXChannel_t defChannel = {/* frequency      */ 0,
+			 /* bandwidth      */ DRX_BANDWIDTH_6MHZ,
+			 /* mirror         */ DRX_MIRROR_NO,
+			 /* constellation  */ DRX_CONSTELLATION_AUTO,
+			 /* hierarchy      */ DRX_HIERARCHY_UNKNOWN,
+			 /* priority       */ DRX_PRIORITY_UNKNOWN,
+			 /* coderate       */ DRX_CODERATE_UNKNOWN,
+			 /* guard          */ DRX_GUARD_UNKNOWN,
+			 /* fftmode        */ DRX_FFTMODE_UNKNOWN,
+			 /* classification */ DRX_CLASSIFICATION_AUTO,
+			 /* symbolrate     */ 5057000,
+			 /* interleavemode */ DRX_INTERLEAVEMODE_UNKNOWN,
+			 /* ldpc           */ DRX_LDPC_UNKNOWN,
+			 /* carrier        */ DRX_CARRIER_UNKNOWN,
+			 /* frame mode     */ DRX_FRAMEMODE_UNKNOWN
+			 };
+
+	/* Bring the demod out of sleep */
+	drx39xxj_set_powerstate(fe, 1);
+
+	/* Now make the tuner do it's thing... */
+	if (fe->ops.tuner_ops.set_params) {
+		if (fe->ops.i2c_gate_ctrl)
+			fe->ops.i2c_gate_ctrl(fe, 1);
+		fe->ops.tuner_ops.set_params(fe, p);
+		if (fe->ops.i2c_gate_ctrl)
+			fe->ops.i2c_gate_ctrl(fe, 0);
+	}
+
+	if (standard != state->current_standard || state->powered_up == 0) {
+		/* Set the standard (will be powered up if necessary */
+		result = DRX_Ctrl(demod, DRX_CTRL_SET_STANDARD, &standard);
+		if (result != DRX_STS_OK) {
+			printk("Failed to set standard! result=%02x\n", result);
+			return -EINVAL;
+		}
+		state->powered_up = 1;
+		state->current_standard = standard;
+	}
+
+	/* set channel parameters */
+	channel = defChannel;
+	channel.frequency      = p->frequency / 1000;
+	channel.bandwidth      = DRX_BANDWIDTH_6MHZ;
+	channel.constellation  = DRX_CONSTELLATION_AUTO;
+
+	/* program channel */
+	result = DRX_Ctrl(demod, DRX_CTRL_SET_CHANNEL, &channel);
+	if (result != DRX_STS_OK) {
+		printk("Failed to set channel!\n");
+		return -EINVAL;
+	}
+
+	// Just for giggles, let's shut off the LNA again....
+	uioData.uio   = DRX_UIO1;
+	uioData.value = FALSE;
+	result = DRX_Ctrl(demod, DRX_CTRL_UIO_WRITE, &uioData);
+	if (result != DRX_STS_OK) {
+		printk("Failed to disable LNA!\n");
+		return 0;
+	}
+
+#ifdef DJH_DEBUG
+	for(i = 0; i < 2000; i++) {
+	  fe_status_t  status;
+	  drx39xxj_read_status(fe,  &status);
+	  printk("i=%d status=%d\n", i, status);
+	  msleep(100);
+	  i += 100;
+	}
+#endif
+
+	return 0;
+}
+
+
+static int drx39xxj_sleep(struct dvb_frontend* fe)
+{
+	/* power-down the demodulator */
+	return drx39xxj_set_powerstate(fe, 0);
+}
+
+static int drx39xxj_i2c_gate_ctrl(struct dvb_frontend *fe, int enable)
+{
+	struct drx39xxj_state *state = fe->demodulator_priv;
+	DRXDemodInstance_t *demod = state->demod;
+	Bool_t i2c_gate_state;
+	DRXStatus_t result;
+
+#ifdef DJH_DEBUG
+	printk("i2c gate call: enable=%d state=%d\n", enable,
+	       state->i2c_gate_open);
+#endif
+
+	if (enable)
+		i2c_gate_state = TRUE;
+	else
+		i2c_gate_state = FALSE;
+
+	if (state->i2c_gate_open == enable) {
+		/* We're already in the desired state */
+		return 0;
+	}
+
+	result = DRX_Ctrl(demod, DRX_CTRL_I2C_BRIDGE, &i2c_gate_state);
+	if (result != DRX_STS_OK) {
+		printk("drx39xxj: could not open i2c gate [%d]\n", result);
+		dump_stack();
+	} else {
+		state->i2c_gate_open = enable;
+	}
+	return 0;
+}
+
+
+static int drx39xxj_init(struct dvb_frontend* fe)
+{
+	/* Bring the demod out of sleep */
+	drx39xxj_set_powerstate(fe, 1);
+
+	return 0;
+}
+
+static int drx39xxj_get_tune_settings(struct dvb_frontend *fe,
+				     struct dvb_frontend_tune_settings *tune)
+{
+	tune->min_delay_ms = 1000;
+	return 0;
+}
+
+static void drx39xxj_release(struct dvb_frontend* fe)
+{
+	struct drx39xxj_state* state = fe->demodulator_priv;
+	kfree(state);
+}
+
+static struct dvb_frontend_ops drx39xxj_ops;
+
+struct dvb_frontend *drx39xxj_attach(struct i2c_adapter *i2c)
+{
+	struct drx39xxj_state* state = NULL;
+
+	I2CDeviceAddr_t     *demodAddr = NULL;
+	DRXCommonAttr_t     *demodCommAttr = NULL;
+	DRXJData_t          *demodExtAttr = NULL;
+	DRXDemodInstance_t  *demod = NULL;
+	DRXUIOCfg_t uioCfg;
+	DRXUIOData_t uioData;
+	DRXStatus_t result;
+
+	/* allocate memory for the internal state */
+	state = kmalloc(sizeof(struct drx39xxj_state), GFP_KERNEL);
+	if (state == NULL)
+		goto error;
+
+	demod = kmalloc(sizeof(DRXDemodInstance_t), GFP_KERNEL);
+	if (demod == NULL)
+		goto error;
+
+	demodAddr = kmalloc(sizeof(I2CDeviceAddr_t), GFP_KERNEL);
+	if (demodAddr == NULL)
+		goto error;
+
+	demodCommAttr = kmalloc(sizeof(DRXCommonAttr_t), GFP_KERNEL);
+	if (demodCommAttr == NULL)
+		goto error;
+
+	demodExtAttr = kmalloc(sizeof(DRXJData_t), GFP_KERNEL);
+	if (demodExtAttr == NULL)
+		goto error;
+
+	/* setup the state */
+	state->i2c = i2c;
+	state->demod = demod;
+
+	memcpy(demod, &DRXJDefaultDemod_g, sizeof(DRXDemodInstance_t));
+
+	demod->myI2CDevAddr = demodAddr;
+	memcpy(demod->myI2CDevAddr, &DRXJDefaultAddr_g,
+	       sizeof(I2CDeviceAddr_t));
+	demod->myI2CDevAddr->userData = state;
+	demod->myCommonAttr = demodCommAttr;
+	memcpy(demod->myCommonAttr, &DRXJDefaultCommAttr_g,
+	       sizeof(DRXCommonAttr_t));
+	demod->myCommonAttr->microcode = DRXJ_MC_MAIN;
+	//	demod->myCommonAttr->verifyMicrocode = FALSE;
+	demod->myCommonAttr->verifyMicrocode = TRUE;
+	demod->myCommonAttr->intermediateFreq = 5000;
+
+	demod->myExtAttr = demodExtAttr;
+	memcpy(demod->myExtAttr, &DRXJData_g, sizeof(DRXJData_t));
+	((DRXJData_t *) demod->myExtAttr)->uioSmaTxMode = DRX_UIO_MODE_READWRITE;
+
+	demod->myTuner = NULL;
+
+	result = DRX_Open(demod);
+	if (result != DRX_STS_OK) {
+		printk("DRX open failed!  Aborting\n");
+		kfree(state);
+		return NULL;
+	}
+
+	/* Turn off the LNA */
+	uioCfg.uio    = DRX_UIO1;
+	uioCfg.mode   = DRX_UIO_MODE_READWRITE;
+	/* Configure user-I/O #3: enable read/write */
+	result = DRX_Ctrl(demod, DRX_CTRL_UIO_CFG, &uioCfg);
+	if (result != DRX_STS_OK) {
+		printk("Failed to setup LNA GPIO!\n");
+		return NULL;
+	}
+
+	uioData.uio   = DRX_UIO1;
+	uioData.value = FALSE;
+	result = DRX_Ctrl(demod, DRX_CTRL_UIO_WRITE, &uioData);
+	if (result != DRX_STS_OK) {
+		printk("Failed to disable LNA!\n");
+		return NULL;
+	}
+
+	/* create dvb_frontend */
+	memcpy(&state->frontend.ops, &drx39xxj_ops,
+	       sizeof(struct dvb_frontend_ops));
+
+	state->frontend.demodulator_priv = state;
+	return &state->frontend;
+
+error:
+	if (state != NULL)
+		kfree(state);
+	if (demod != NULL)
+		kfree(demod);
+	return NULL;
+}
+
+static struct dvb_frontend_ops drx39xxj_ops = {
+
+	.info = {
+		.name			= "Micronas DRX39xxj family Frontend",
+		.type			= FE_ATSC | FE_QAM,
+		.frequency_stepsize	= 62500,
+		.frequency_min		= 51000000,
+		.frequency_max		= 858000000,
+		.caps = FE_CAN_QAM_64 | FE_CAN_QAM_256 | FE_CAN_8VSB
+	},
+
+	.init = drx39xxj_init,
+	.i2c_gate_ctrl = drx39xxj_i2c_gate_ctrl,
+	.sleep = drx39xxj_sleep,
+	.set_frontend = drx39xxj_set_frontend,
+	.get_frontend = drx39xxj_get_frontend,
+	.get_tune_settings = drx39xxj_get_tune_settings,
+	.read_status = drx39xxj_read_status,
+	.read_ber = drx39xxj_read_ber,
+	.read_signal_strength = drx39xxj_read_signal_strength,
+	.read_snr = drx39xxj_read_snr,
+	.read_ucblocks = drx39xxj_read_ucblocks,
+	.release = drx39xxj_release,
+};
+
+MODULE_DESCRIPTION("Micronas DRX39xxj Frontend");
+MODULE_AUTHOR("Devin Heitmueller");
+MODULE_LICENSE("GPL");
+
+EXPORT_SYMBOL(drx39xxj_attach);
-- 
1.7.5.4