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path: root/drivers/media/dvb-frontends/drx39xyj/drx39xxj.c
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Diffstat (limited to 'drivers/media/dvb-frontends/drx39xyj/drx39xxj.c')
-rw-r--r--drivers/media/dvb-frontends/drx39xyj/drx39xxj.c456
1 files changed, 456 insertions, 0 deletions
diff --git a/drivers/media/dvb-frontends/drx39xyj/drx39xxj.c b/drivers/media/dvb-frontends/drx39xyj/drx39xxj.c
new file mode 100644
index 000000000000..524c07d9d451
--- /dev/null
+++ b/drivers/media/dvb-frontends/drx39xyj/drx39xxj.c
@@ -0,0 +1,456 @@
+/*
+ * Driver for Micronas DRX39xx family (drx3933j)
+ *
+ * Written by Devin Heitmueller <devin.heitmueller@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/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);
generated by cgit v1.2.1 (git 2.18.0) at 2024-11-13 10:00:06 +0000