[media] e4000: various small changes
authorAntti Palosaari <crope@iki.fi>
Tue, 21 Apr 2015 20:13:39 +0000 (17:13 -0300)
committerMauro Carvalho Chehab <mchehab@osg.samsung.com>
Wed, 20 May 2015 16:48:31 +0000 (13:48 -0300)
* Rename device state from 's' to 'dev'.
* Move single include to driver private header.
* Change error handling type of each function to one I tend use
nowadays.
* Remove dummy register write from init. Even Windows driver does this
multiple times remove it as I have never seen any I2C errors.
* Define I2C client pointer for each function and use it.
* Do not clean tuner ops during driver remove - not needed.
* Disable sysfs device bind / unbind. We are not allowed manually
bind / unbind device from the driver currently.
* Rename some other variables.

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
drivers/media/tuners/e4000.c
drivers/media/tuners/e4000.h
drivers/media/tuners/e4000_priv.h

index cda8bcf..57bdca4 100644 (file)
  */
 
 #include "e4000_priv.h"
-#include <linux/math64.h>
 
 static int e4000_init(struct dvb_frontend *fe)
 {
-       struct e4000 *s = fe->tuner_priv;
+       struct e4000_dev *dev = fe->tuner_priv;
+       struct i2c_client *client = dev->client;
        int ret;
 
-       dev_dbg(&s->client->dev, "\n");
-
-       /* dummy I2C to ensure I2C wakes up */
-       ret = regmap_write(s->regmap, 0x02, 0x40);
+       dev_dbg(&client->dev, "\n");
 
        /* reset */
-       ret = regmap_write(s->regmap, 0x00, 0x01);
+       ret = regmap_write(dev->regmap, 0x00, 0x01);
        if (ret)
                goto err;
 
        /* disable output clock */
-       ret = regmap_write(s->regmap, 0x06, 0x00);
+       ret = regmap_write(dev->regmap, 0x06, 0x00);
        if (ret)
                goto err;
 
-       ret = regmap_write(s->regmap, 0x7a, 0x96);
+       ret = regmap_write(dev->regmap, 0x7a, 0x96);
        if (ret)
                goto err;
 
        /* configure gains */
-       ret = regmap_bulk_write(s->regmap, 0x7e, "\x01\xfe", 2);
+       ret = regmap_bulk_write(dev->regmap, 0x7e, "\x01\xfe", 2);
        if (ret)
                goto err;
 
-       ret = regmap_write(s->regmap, 0x82, 0x00);
+       ret = regmap_write(dev->regmap, 0x82, 0x00);
        if (ret)
                goto err;
 
-       ret = regmap_write(s->regmap, 0x24, 0x05);
+       ret = regmap_write(dev->regmap, 0x24, 0x05);
        if (ret)
                goto err;
 
-       ret = regmap_bulk_write(s->regmap, 0x87, "\x20\x01", 2);
+       ret = regmap_bulk_write(dev->regmap, 0x87, "\x20\x01", 2);
        if (ret)
                goto err;
 
-       ret = regmap_bulk_write(s->regmap, 0x9f, "\x7f\x07", 2);
+       ret = regmap_bulk_write(dev->regmap, 0x9f, "\x7f\x07", 2);
        if (ret)
                goto err;
 
        /* DC offset control */
-       ret = regmap_write(s->regmap, 0x2d, 0x1f);
+       ret = regmap_write(dev->regmap, 0x2d, 0x1f);
        if (ret)
                goto err;
 
-       ret = regmap_bulk_write(s->regmap, 0x70, "\x01\x01", 2);
+       ret = regmap_bulk_write(dev->regmap, 0x70, "\x01\x01", 2);
        if (ret)
                goto err;
 
        /* gain control */
-       ret = regmap_write(s->regmap, 0x1a, 0x17);
+       ret = regmap_write(dev->regmap, 0x1a, 0x17);
        if (ret)
                goto err;
 
-       ret = regmap_write(s->regmap, 0x1f, 0x1a);
+       ret = regmap_write(dev->regmap, 0x1f, 0x1a);
        if (ret)
                goto err;
 
-       s->active = true;
-err:
-       if (ret)
-               dev_dbg(&s->client->dev, "failed=%d\n", ret);
+       dev->active = true;
 
+       return 0;
+err:
+       dev_dbg(&client->dev, "failed=%d\n", ret);
        return ret;
 }
 
 static int e4000_sleep(struct dvb_frontend *fe)
 {
-       struct e4000 *s = fe->tuner_priv;
+       struct e4000_dev *dev = fe->tuner_priv;
+       struct i2c_client *client = dev->client;
        int ret;
 
-       dev_dbg(&s->client->dev, "\n");
+       dev_dbg(&client->dev, "\n");
 
-       s->active = false;
+       dev->active = false;
 
-       ret = regmap_write(s->regmap, 0x00, 0x00);
+       ret = regmap_write(dev->regmap, 0x00, 0x00);
        if (ret)
                goto err;
-err:
-       if (ret)
-               dev_dbg(&s->client->dev, "failed=%d\n", ret);
 
+       return 0;
+err:
+       dev_dbg(&client->dev, "failed=%d\n", ret);
        return ret;
 }
 
 static int e4000_set_params(struct dvb_frontend *fe)
 {
-       struct e4000 *s = fe->tuner_priv;
+       struct e4000_dev *dev = fe->tuner_priv;
+       struct i2c_client *client = dev->client;
        struct dtv_frontend_properties *c = &fe->dtv_property_cache;
        int ret, i;
        unsigned int div_n, k, k_cw, div_out;
        u64 f_vco;
        u8 buf[5], i_data[4], q_data[4];
 
-       dev_dbg(&s->client->dev,
-                       "delivery_system=%d frequency=%u bandwidth_hz=%u\n",
-                       c->delivery_system, c->frequency, c->bandwidth_hz);
+       dev_dbg(&client->dev,
+               "delivery_system=%d frequency=%u bandwidth_hz=%u\n",
+               c->delivery_system, c->frequency, c->bandwidth_hz);
 
        /* gain control manual */
-       ret = regmap_write(s->regmap, 0x1a, 0x00);
+       ret = regmap_write(dev->regmap, 0x1a, 0x00);
        if (ret)
                goto err;
 
@@ -148,20 +147,19 @@ static int e4000_set_params(struct dvb_frontend *fe)
                if (c->frequency <= e4000_pll_lut[i].freq)
                        break;
        }
-
        if (i == ARRAY_SIZE(e4000_pll_lut)) {
                ret = -EINVAL;
                goto err;
        }
 
-       #define F_REF s->clock
+       #define F_REF dev->clk
        div_out = e4000_pll_lut[i].div_out;
        f_vco = (u64) c->frequency * div_out;
        /* calculate PLL integer and fractional control word */
        div_n = div_u64_rem(f_vco, F_REF, &k);
        k_cw = div_u64((u64) k * 0x10000, F_REF);
 
-       dev_dbg(&s->client->dev,
+       dev_dbg(&client->dev,
                "frequency=%u f_vco=%llu F_REF=%u div_n=%u k=%u k_cw=%04x div_out=%u\n",
                c->frequency, f_vco, F_REF, div_n, k, k_cw, div_out);
 
@@ -170,7 +168,7 @@ static int e4000_set_params(struct dvb_frontend *fe)
        buf[2] = (k_cw >> 8) & 0xff;
        buf[3] = 0x00;
        buf[4] = e4000_pll_lut[i].div_out_reg;
-       ret = regmap_bulk_write(s->regmap, 0x09, buf, 5);
+       ret = regmap_bulk_write(dev->regmap, 0x09, buf, 5);
        if (ret)
                goto err;
 
@@ -179,13 +177,12 @@ static int e4000_set_params(struct dvb_frontend *fe)
                if (c->frequency <= e400_lna_filter_lut[i].freq)
                        break;
        }
-
        if (i == ARRAY_SIZE(e400_lna_filter_lut)) {
                ret = -EINVAL;
                goto err;
        }
 
-       ret = regmap_write(s->regmap, 0x10, e400_lna_filter_lut[i].val);
+       ret = regmap_write(dev->regmap, 0x10, e400_lna_filter_lut[i].val);
        if (ret)
                goto err;
 
@@ -194,7 +191,6 @@ static int e4000_set_params(struct dvb_frontend *fe)
                if (c->bandwidth_hz <= e4000_if_filter_lut[i].freq)
                        break;
        }
-
        if (i == ARRAY_SIZE(e4000_if_filter_lut)) {
                ret = -EINVAL;
                goto err;
@@ -203,7 +199,7 @@ static int e4000_set_params(struct dvb_frontend *fe)
        buf[0] = e4000_if_filter_lut[i].reg11_val;
        buf[1] = e4000_if_filter_lut[i].reg12_val;
 
-       ret = regmap_bulk_write(s->regmap, 0x11, buf, 2);
+       ret = regmap_bulk_write(dev->regmap, 0x11, buf, 2);
        if (ret)
                goto err;
 
@@ -212,39 +208,38 @@ static int e4000_set_params(struct dvb_frontend *fe)
                if (c->frequency <= e4000_band_lut[i].freq)
                        break;
        }
-
        if (i == ARRAY_SIZE(e4000_band_lut)) {
                ret = -EINVAL;
                goto err;
        }
 
-       ret = regmap_write(s->regmap, 0x07, e4000_band_lut[i].reg07_val);
+       ret = regmap_write(dev->regmap, 0x07, e4000_band_lut[i].reg07_val);
        if (ret)
                goto err;
 
-       ret = regmap_write(s->regmap, 0x78, e4000_band_lut[i].reg78_val);
+       ret = regmap_write(dev->regmap, 0x78, e4000_band_lut[i].reg78_val);
        if (ret)
                goto err;
 
        /* DC offset */
        for (i = 0; i < 4; i++) {
                if (i == 0)
-                       ret = regmap_bulk_write(s->regmap, 0x15, "\x00\x7e\x24", 3);
+                       ret = regmap_bulk_write(dev->regmap, 0x15, "\x00\x7e\x24", 3);
                else if (i == 1)
-                       ret = regmap_bulk_write(s->regmap, 0x15, "\x00\x7f", 2);
+                       ret = regmap_bulk_write(dev->regmap, 0x15, "\x00\x7f", 2);
                else if (i == 2)
-                       ret = regmap_bulk_write(s->regmap, 0x15, "\x01", 1);
+                       ret = regmap_bulk_write(dev->regmap, 0x15, "\x01", 1);
                else
-                       ret = regmap_bulk_write(s->regmap, 0x16, "\x7e", 1);
+                       ret = regmap_bulk_write(dev->regmap, 0x16, "\x7e", 1);
 
                if (ret)
                        goto err;
 
-               ret = regmap_write(s->regmap, 0x29, 0x01);
+               ret = regmap_write(dev->regmap, 0x29, 0x01);
                if (ret)
                        goto err;
 
-               ret = regmap_bulk_read(s->regmap, 0x2a, buf, 3);
+               ret = regmap_bulk_read(dev->regmap, 0x2a, buf, 3);
                if (ret)
                        goto err;
 
@@ -255,30 +250,31 @@ static int e4000_set_params(struct dvb_frontend *fe)
        swap(q_data[2], q_data[3]);
        swap(i_data[2], i_data[3]);
 
-       ret = regmap_bulk_write(s->regmap, 0x50, q_data, 4);
+       ret = regmap_bulk_write(dev->regmap, 0x50, q_data, 4);
        if (ret)
                goto err;
 
-       ret = regmap_bulk_write(s->regmap, 0x60, i_data, 4);
+       ret = regmap_bulk_write(dev->regmap, 0x60, i_data, 4);
        if (ret)
                goto err;
 
        /* gain control auto */
-       ret = regmap_write(s->regmap, 0x1a, 0x17);
+       ret = regmap_write(dev->regmap, 0x1a, 0x17);
        if (ret)
                goto err;
-err:
-       if (ret)
-               dev_dbg(&s->client->dev, "failed=%d\n", ret);
 
+       return 0;
+err:
+       dev_dbg(&client->dev, "failed=%d\n", ret);
        return ret;
 }
 
 static int e4000_get_if_frequency(struct dvb_frontend *fe, u32 *frequency)
 {
-       struct e4000 *s = fe->tuner_priv;
+       struct e4000_dev *dev = fe->tuner_priv;
+       struct i2c_client *client = dev->client;
 
-       dev_dbg(&s->client->dev, "\n");
+       dev_dbg(&client->dev, "\n");
 
        *frequency = 0; /* Zero-IF */
 
@@ -288,141 +284,146 @@ static int e4000_get_if_frequency(struct dvb_frontend *fe, u32 *frequency)
 #if IS_ENABLED(CONFIG_VIDEO_V4L2)
 static int e4000_set_lna_gain(struct dvb_frontend *fe)
 {
-       struct e4000 *s = fe->tuner_priv;
+       struct e4000_dev *dev = fe->tuner_priv;
+       struct i2c_client *client = dev->client;
        int ret;
        u8 u8tmp;
 
-       dev_dbg(&s->client->dev, "lna auto=%d->%d val=%d->%d\n",
-                       s->lna_gain_auto->cur.val, s->lna_gain_auto->val,
-                       s->lna_gain->cur.val, s->lna_gain->val);
+       dev_dbg(&client->dev, "lna auto=%d->%d val=%d->%d\n",
+               dev->lna_gain_auto->cur.val, dev->lna_gain_auto->val,
+               dev->lna_gain->cur.val, dev->lna_gain->val);
 
-       if (s->lna_gain_auto->val && s->if_gain_auto->cur.val)
+       if (dev->lna_gain_auto->val && dev->if_gain_auto->cur.val)
                u8tmp = 0x17;
-       else if (s->lna_gain_auto->val)
+       else if (dev->lna_gain_auto->val)
                u8tmp = 0x19;
-       else if (s->if_gain_auto->cur.val)
+       else if (dev->if_gain_auto->cur.val)
                u8tmp = 0x16;
        else
                u8tmp = 0x10;
 
-       ret = regmap_write(s->regmap, 0x1a, u8tmp);
+       ret = regmap_write(dev->regmap, 0x1a, u8tmp);
        if (ret)
                goto err;
 
-       if (s->lna_gain_auto->val == false) {
-               ret = regmap_write(s->regmap, 0x14, s->lna_gain->val);
+       if (dev->lna_gain_auto->val == false) {
+               ret = regmap_write(dev->regmap, 0x14, dev->lna_gain->val);
                if (ret)
                        goto err;
        }
-err:
-       if (ret)
-               dev_dbg(&s->client->dev, "failed=%d\n", ret);
 
+       return 0;
+err:
+       dev_dbg(&client->dev, "failed=%d\n", ret);
        return ret;
 }
 
 static int e4000_set_mixer_gain(struct dvb_frontend *fe)
 {
-       struct e4000 *s = fe->tuner_priv;
+       struct e4000_dev *dev = fe->tuner_priv;
+       struct i2c_client *client = dev->client;
        int ret;
        u8 u8tmp;
 
-       dev_dbg(&s->client->dev, "mixer auto=%d->%d val=%d->%d\n",
-                       s->mixer_gain_auto->cur.val, s->mixer_gain_auto->val,
-                       s->mixer_gain->cur.val, s->mixer_gain->val);
+       dev_dbg(&client->dev, "mixer auto=%d->%d val=%d->%d\n",
+               dev->mixer_gain_auto->cur.val, dev->mixer_gain_auto->val,
+               dev->mixer_gain->cur.val, dev->mixer_gain->val);
 
-       if (s->mixer_gain_auto->val)
+       if (dev->mixer_gain_auto->val)
                u8tmp = 0x15;
        else
                u8tmp = 0x14;
 
-       ret = regmap_write(s->regmap, 0x20, u8tmp);
+       ret = regmap_write(dev->regmap, 0x20, u8tmp);
        if (ret)
                goto err;
 
-       if (s->mixer_gain_auto->val == false) {
-               ret = regmap_write(s->regmap, 0x15, s->mixer_gain->val);
+       if (dev->mixer_gain_auto->val == false) {
+               ret = regmap_write(dev->regmap, 0x15, dev->mixer_gain->val);
                if (ret)
                        goto err;
        }
-err:
-       if (ret)
-               dev_dbg(&s->client->dev, "failed=%d\n", ret);
 
+       return 0;
+err:
+       dev_dbg(&client->dev, "failed=%d\n", ret);
        return ret;
 }
 
 static int e4000_set_if_gain(struct dvb_frontend *fe)
 {
-       struct e4000 *s = fe->tuner_priv;
+       struct e4000_dev *dev = fe->tuner_priv;
+       struct i2c_client *client = dev->client;
        int ret;
        u8 buf[2];
        u8 u8tmp;
 
-       dev_dbg(&s->client->dev, "if auto=%d->%d val=%d->%d\n",
-                       s->if_gain_auto->cur.val, s->if_gain_auto->val,
-                       s->if_gain->cur.val, s->if_gain->val);
+       dev_dbg(&client->dev, "if auto=%d->%d val=%d->%d\n",
+               dev->if_gain_auto->cur.val, dev->if_gain_auto->val,
+               dev->if_gain->cur.val, dev->if_gain->val);
 
-       if (s->if_gain_auto->val && s->lna_gain_auto->cur.val)
+       if (dev->if_gain_auto->val && dev->lna_gain_auto->cur.val)
                u8tmp = 0x17;
-       else if (s->lna_gain_auto->cur.val)
+       else if (dev->lna_gain_auto->cur.val)
                u8tmp = 0x19;
-       else if (s->if_gain_auto->val)
+       else if (dev->if_gain_auto->val)
                u8tmp = 0x16;
        else
                u8tmp = 0x10;
 
-       ret = regmap_write(s->regmap, 0x1a, u8tmp);
+       ret = regmap_write(dev->regmap, 0x1a, u8tmp);
        if (ret)
                goto err;
 
-       if (s->if_gain_auto->val == false) {
-               buf[0] = e4000_if_gain_lut[s->if_gain->val].reg16_val;
-               buf[1] = e4000_if_gain_lut[s->if_gain->val].reg17_val;
-               ret = regmap_bulk_write(s->regmap, 0x16, buf, 2);
+       if (dev->if_gain_auto->val == false) {
+               buf[0] = e4000_if_gain_lut[dev->if_gain->val].reg16_val;
+               buf[1] = e4000_if_gain_lut[dev->if_gain->val].reg17_val;
+               ret = regmap_bulk_write(dev->regmap, 0x16, buf, 2);
                if (ret)
                        goto err;
        }
-err:
-       if (ret)
-               dev_dbg(&s->client->dev, "failed=%d\n", ret);
 
+       return 0;
+err:
+       dev_dbg(&client->dev, "failed=%d\n", ret);
        return ret;
 }
 
 static int e4000_pll_lock(struct dvb_frontend *fe)
 {
-       struct e4000 *s = fe->tuner_priv;
+       struct e4000_dev *dev = fe->tuner_priv;
+       struct i2c_client *client = dev->client;
        int ret;
-       unsigned int utmp;
+       unsigned int uitmp;
 
-       ret = regmap_read(s->regmap, 0x07, &utmp);
+       ret = regmap_read(dev->regmap, 0x07, &uitmp);
        if (ret)
                goto err;
 
-       s->pll_lock->val = (utmp & 0x01);
-err:
-       if (ret)
-               dev_dbg(&s->client->dev, "failed=%d\n", ret);
+       dev->pll_lock->val = (uitmp & 0x01);
 
+       return 0;
+err:
+       dev_dbg(&client->dev, "failed=%d\n", ret);
        return ret;
 }
 
 static int e4000_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
 {
-       struct e4000 *s = container_of(ctrl->handler, struct e4000, hdl);
+       struct e4000_dev *dev = container_of(ctrl->handler, struct e4000_dev, hdl);
+       struct i2c_client *client = dev->client;
        int ret;
 
-       if (!s->active)
+       if (!dev->active)
                return 0;
 
        switch (ctrl->id) {
        case  V4L2_CID_RF_TUNER_PLL_LOCK:
-               ret = e4000_pll_lock(s->fe);
+               ret = e4000_pll_lock(dev->fe);
                break;
        default:
-               dev_dbg(&s->client->dev, "unknown ctrl: id=%d name=%s\n",
-                               ctrl->id, ctrl->name);
+               dev_dbg(&client->dev, "unknown ctrl: id=%d name=%s\n",
+                       ctrl->id, ctrl->name);
                ret = -EINVAL;
        }
 
@@ -431,35 +432,35 @@ static int e4000_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
 
 static int e4000_s_ctrl(struct v4l2_ctrl *ctrl)
 {
-       struct e4000 *s = container_of(ctrl->handler, struct e4000, hdl);
-       struct dvb_frontend *fe = s->fe;
-       struct dtv_frontend_properties *c = &fe->dtv_property_cache;
+       struct e4000_dev *dev = container_of(ctrl->handler, struct e4000_dev, hdl);
+       struct i2c_client *client = dev->client;
+       struct dtv_frontend_properties *c = &dev->fe->dtv_property_cache;
        int ret;
 
-       if (!s->active)
+       if (!dev->active)
                return 0;
 
        switch (ctrl->id) {
        case V4L2_CID_RF_TUNER_BANDWIDTH_AUTO:
        case V4L2_CID_RF_TUNER_BANDWIDTH:
-               c->bandwidth_hz = s->bandwidth->val;
-               ret = e4000_set_params(s->fe);
+               c->bandwidth_hz = dev->bandwidth->val;
+               ret = e4000_set_params(dev->fe);
                break;
        case  V4L2_CID_RF_TUNER_LNA_GAIN_AUTO:
        case  V4L2_CID_RF_TUNER_LNA_GAIN:
-               ret = e4000_set_lna_gain(s->fe);
+               ret = e4000_set_lna_gain(dev->fe);
                break;
        case  V4L2_CID_RF_TUNER_MIXER_GAIN_AUTO:
        case  V4L2_CID_RF_TUNER_MIXER_GAIN:
-               ret = e4000_set_mixer_gain(s->fe);
+               ret = e4000_set_mixer_gain(dev->fe);
                break;
        case  V4L2_CID_RF_TUNER_IF_GAIN_AUTO:
        case  V4L2_CID_RF_TUNER_IF_GAIN:
-               ret = e4000_set_if_gain(s->fe);
+               ret = e4000_set_if_gain(dev->fe);
                break;
        default:
-               dev_dbg(&s->client->dev, "unknown ctrl: id=%d name=%s\n",
-                               ctrl->id, ctrl->name);
+               dev_dbg(&client->dev, "unknown ctrl: id=%d name=%s\n",
+                       ctrl->id, ctrl->name);
                ret = -EINVAL;
        }
 
@@ -491,138 +492,129 @@ static const struct dvb_tuner_ops e4000_tuner_ops = {
  * subdev itself, just to avoid reinventing the wheel.
  */
 static int e4000_probe(struct i2c_client *client,
-               const struct i2c_device_id *id)
+                      const struct i2c_device_id *id)
 {
+       struct e4000_dev *dev;
        struct e4000_config *cfg = client->dev.platform_data;
        struct dvb_frontend *fe = cfg->fe;
-       struct e4000 *s;
        int ret;
-       unsigned int utmp;
+       unsigned int uitmp;
        static const struct regmap_config regmap_config = {
                .reg_bits = 8,
                .val_bits = 8,
-               .max_register = 0xff,
        };
 
-       s = kzalloc(sizeof(struct e4000), GFP_KERNEL);
-       if (!s) {
+       dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+       if (!dev) {
                ret = -ENOMEM;
-               dev_err(&client->dev, "kzalloc() failed\n");
                goto err;
        }
 
-       s->clock = cfg->clock;
-       s->client = client;
-       s->fe = cfg->fe;
-       s->regmap = devm_regmap_init_i2c(client, &regmap_config);
-       if (IS_ERR(s->regmap)) {
-               ret = PTR_ERR(s->regmap);
-               goto err;
+       dev->clk = cfg->clock;
+       dev->client = client;
+       dev->fe = cfg->fe;
+       dev->regmap = devm_regmap_init_i2c(client, &regmap_config);
+       if (IS_ERR(dev->regmap)) {
+               ret = PTR_ERR(dev->regmap);
+               goto err_kfree;
        }
 
        /* check if the tuner is there */
-       ret = regmap_read(s->regmap, 0x02, &utmp);
+       ret = regmap_read(dev->regmap, 0x02, &uitmp);
        if (ret)
-               goto err;
+               goto err_kfree;
 
-       dev_dbg(&s->client->dev, "chip id=%02x\n", utmp);
+       dev_dbg(&client->dev, "chip id=%02x\n", uitmp);
 
-       if (utmp != 0x40) {
+       if (uitmp != 0x40) {
                ret = -ENODEV;
-               goto err;
+               goto err_kfree;
        }
 
        /* put sleep as chip seems to be in normal mode by default */
-       ret = regmap_write(s->regmap, 0x00, 0x00);
+       ret = regmap_write(dev->regmap, 0x00, 0x00);
        if (ret)
-               goto err;
+               goto err_kfree;
 
 #if IS_ENABLED(CONFIG_VIDEO_V4L2)
        /* Register controls */
-       v4l2_ctrl_handler_init(&s->hdl, 9);
-       s->bandwidth_auto = v4l2_ctrl_new_std(&s->hdl, &e4000_ctrl_ops,
+       v4l2_ctrl_handler_init(&dev->hdl, 9);
+       dev->bandwidth_auto = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops,
                        V4L2_CID_RF_TUNER_BANDWIDTH_AUTO, 0, 1, 1, 1);
-       s->bandwidth = v4l2_ctrl_new_std(&s->hdl, &e4000_ctrl_ops,
+       dev->bandwidth = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops,
                        V4L2_CID_RF_TUNER_BANDWIDTH, 4300000, 11000000, 100000, 4300000);
-       v4l2_ctrl_auto_cluster(2, &s->bandwidth_auto, 0, false);
-       s->lna_gain_auto = v4l2_ctrl_new_std(&s->hdl, &e4000_ctrl_ops,
+       v4l2_ctrl_auto_cluster(2, &dev->bandwidth_auto, 0, false);
+       dev->lna_gain_auto = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops,
                        V4L2_CID_RF_TUNER_LNA_GAIN_AUTO, 0, 1, 1, 1);
-       s->lna_gain = v4l2_ctrl_new_std(&s->hdl, &e4000_ctrl_ops,
+       dev->lna_gain = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops,
                        V4L2_CID_RF_TUNER_LNA_GAIN, 0, 15, 1, 10);
-       v4l2_ctrl_auto_cluster(2, &s->lna_gain_auto, 0, false);
-       s->mixer_gain_auto = v4l2_ctrl_new_std(&s->hdl, &e4000_ctrl_ops,
+       v4l2_ctrl_auto_cluster(2, &dev->lna_gain_auto, 0, false);
+       dev->mixer_gain_auto = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops,
                        V4L2_CID_RF_TUNER_MIXER_GAIN_AUTO, 0, 1, 1, 1);
-       s->mixer_gain = v4l2_ctrl_new_std(&s->hdl, &e4000_ctrl_ops,
+       dev->mixer_gain = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops,
                        V4L2_CID_RF_TUNER_MIXER_GAIN, 0, 1, 1, 1);
-       v4l2_ctrl_auto_cluster(2, &s->mixer_gain_auto, 0, false);
-       s->if_gain_auto = v4l2_ctrl_new_std(&s->hdl, &e4000_ctrl_ops,
+       v4l2_ctrl_auto_cluster(2, &dev->mixer_gain_auto, 0, false);
+       dev->if_gain_auto = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops,
                        V4L2_CID_RF_TUNER_IF_GAIN_AUTO, 0, 1, 1, 1);
-       s->if_gain = v4l2_ctrl_new_std(&s->hdl, &e4000_ctrl_ops,
+       dev->if_gain = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops,
                        V4L2_CID_RF_TUNER_IF_GAIN, 0, 54, 1, 0);
-       v4l2_ctrl_auto_cluster(2, &s->if_gain_auto, 0, false);
-       s->pll_lock = v4l2_ctrl_new_std(&s->hdl, &e4000_ctrl_ops,
+       v4l2_ctrl_auto_cluster(2, &dev->if_gain_auto, 0, false);
+       dev->pll_lock = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops,
                        V4L2_CID_RF_TUNER_PLL_LOCK,  0, 1, 1, 0);
-       if (s->hdl.error) {
-               ret = s->hdl.error;
-               dev_err(&s->client->dev, "Could not initialize controls\n");
-               v4l2_ctrl_handler_free(&s->hdl);
-               goto err;
+       if (dev->hdl.error) {
+               ret = dev->hdl.error;
+               dev_err(&client->dev, "Could not initialize controls\n");
+               v4l2_ctrl_handler_free(&dev->hdl);
+               goto err_kfree;
        }
 
-       s->sd.ctrl_handler = &s->hdl;
+       dev->sd.ctrl_handler = &dev->hdl;
 #endif
-
-       dev_info(&s->client->dev, "Elonics E4000 successfully identified\n");
-
-       fe->tuner_priv = s;
+       fe->tuner_priv = dev;
        memcpy(&fe->ops.tuner_ops, &e4000_tuner_ops,
                        sizeof(struct dvb_tuner_ops));
+       v4l2_set_subdevdata(&dev->sd, client);
+       i2c_set_clientdata(client, &dev->sd);
 
-       v4l2_set_subdevdata(&s->sd, client);
-       i2c_set_clientdata(client, &s->sd);
-
+       dev_info(&client->dev, "Elonics E4000 successfully identified\n");
        return 0;
+err_kfree:
+       kfree(dev);
 err:
-       if (ret) {
-               dev_dbg(&client->dev, "failed=%d\n", ret);
-               kfree(s);
-       }
-
+       dev_dbg(&client->dev, "failed=%d\n", ret);
        return ret;
 }
 
 static int e4000_remove(struct i2c_client *client)
 {
        struct v4l2_subdev *sd = i2c_get_clientdata(client);
-       struct e4000 *s = container_of(sd, struct e4000, sd);
-       struct dvb_frontend *fe = s->fe;
+       struct e4000_dev *dev = container_of(sd, struct e4000_dev, sd);
 
        dev_dbg(&client->dev, "\n");
 
 #if IS_ENABLED(CONFIG_VIDEO_V4L2)
-       v4l2_ctrl_handler_free(&s->hdl);
+       v4l2_ctrl_handler_free(&dev->hdl);
 #endif
-       memset(&fe->ops.tuner_ops, 0, sizeof(struct dvb_tuner_ops));
-       fe->tuner_priv = NULL;
-       kfree(s);
+       kfree(dev);
 
        return 0;
 }
 
-static const struct i2c_device_id e4000_id[] = {
+static const struct i2c_device_id e4000_id_table[] = {
        {"e4000", 0},
        {}
 };
-MODULE_DEVICE_TABLE(i2c, e4000_id);
+MODULE_DEVICE_TABLE(i2c, e4000_id_table);
 
 static struct i2c_driver e4000_driver = {
        .driver = {
                .owner  = THIS_MODULE,
                .name   = "e4000",
+               .suppress_bind_attrs = true,
        },
        .probe          = e4000_probe,
        .remove         = e4000_remove,
-       .id_table       = e4000_id,
+       .id_table       = e4000_id_table,
 };
 
 module_i2c_driver(e4000_driver);
index e74b8b2..aa9340c 100644 (file)
@@ -21,7 +21,6 @@
 #ifndef E4000_H
 #define E4000_H
 
-#include <linux/kconfig.h>
 #include "dvb_frontend.h"
 
 /*
index 6214fc0..8e991df 100644 (file)
 #define E4000_PRIV_H
 
 #include "e4000.h"
+#include <linux/math64.h>
 #include <media/v4l2-ctrls.h>
 #include <media/v4l2-subdev.h>
 #include <linux/regmap.h>
 
-struct e4000 {
+struct e4000_dev {
        struct i2c_client *client;
        struct regmap *regmap;
-       u32 clock;
+       u32 clk;
        struct dvb_frontend *fe;
        struct v4l2_subdev sd;
        bool active;