Em Fri, 17 Jun 2016 10:03:13 +0200
Hans Verkuil <hverkuil@xxxxxxxxx> escreveu:
> On 06/16/2016 11:17 PM, Mauro Carvalho Chehab wrote:
> > Em Fri, 29 Apr 2016 15:52:24 +0200
> > Hans Verkuil <hverkuil@xxxxxxxxx> escreveu:
> >
> >> From: Hans Verkuil <hans.verkuil@xxxxxxxxx>
> >>
> >> Add CEC support to the adv7604 driver.
> >>
> >> Signed-off-by: Hans Verkuil <hansverk@xxxxxxxxx>
> >> [k.debski@xxxxxxxxxxx: Merged changes from CEC Updates commit by Hans Verkuil]
> >> [k.debski@xxxxxxxxxxx: add missing methods cec/io_write_and_or]
> >> [k.debski@xxxxxxxxxxx: change adv7604 to adv76xx in added functions]
> >> [hansverk@xxxxxxxxx: use _clr_set instead of _and_or]
> >> ---
> >> drivers/media/i2c/Kconfig | 9 ++
> >> drivers/media/i2c/adv7604.c | 332 +++++++++++++++++++++++++++++++++++++++-----
> >> 2 files changed, 305 insertions(+), 36 deletions(-)
> >>
> >> diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig
> >> index 993dc50..cba1fc7 100644
> >> --- a/drivers/media/i2c/Kconfig
> >> +++ b/drivers/media/i2c/Kconfig
> >> @@ -209,6 +209,7 @@ config VIDEO_ADV7604
> >> depends on VIDEO_V4L2 && I2C && VIDEO_V4L2_SUBDEV_API
> >> depends on GPIOLIB || COMPILE_TEST
> >> select HDMI
> >> + select MEDIA_CEC_EDID
> >
> > Same note for all CEC drivers: don't do that! CEC is in staging. We
> > should not have any code outside staging depending or selecting CEC.
>
> CEC_EDID is not in staging. The cec-edid module has a number of helper functions that
> can parse and process the physical address contained in the EDID. It used to be
> part of the cec module, but I realized that these functions are needed regardless of
> whether CEC is used or not. E.g. even if you don't use CEC you don't want to set an
> EDID containing an invalid physical address as that can cause problems on the
> transmitter side.
Ok. Then submit it on a separate patch, with all checkpatch issues
fixed (if any), plus the issues I pointed.
>
> >
> > Instead, put all CEC dependent code inside #ifdefs.
> >
> >
> >> ---help---
> >> Support for the Analog Devices ADV7604 video decoder.
> >>
> >> @@ -218,6 +219,14 @@ config VIDEO_ADV7604
> >> To compile this driver as a module, choose M here: the
> >> module will be called adv7604.
> >>
> >> +config VIDEO_ADV7604_CEC
> >> + bool "Enable Analog Devices ADV7604 CEC support"
> >> + depends on VIDEO_ADV7604 && MEDIA_CEC
> >> + default y
> >
> > Remove "default y". CEC is experimental. Users should explicitly
> > agree adding experimental code that depends on staging stuff.
>
> OK.
>
> >
> >> + ---help---
> >> + When selected the adv7604 will support the optional
> >> + HDMI CEC feature.
> >
> > Please add a notice that CEC is an experimental feature under
> > staging and may be changed or even removed in the future.
> >
> > We don't want any application to use it yet, as we're still
> > experimenting with it.
> >
> > For the rest of the code below, and for patches 10-13: all the above
> > applies to them.
>
> Ack.
>
> >
> >> +
> >> config VIDEO_ADV7842
> >> tristate "Analog Devices ADV7842 decoder"
> >> depends on VIDEO_V4L2 && I2C && VIDEO_V4L2_SUBDEV_API
> >> diff --git a/drivers/media/i2c/adv7604.c b/drivers/media/i2c/adv7604.c
> >> index beb2841..f462585 100644
> >> --- a/drivers/media/i2c/adv7604.c
> >> +++ b/drivers/media/i2c/adv7604.c
> >> @@ -40,6 +40,7 @@
> >> #include <linux/regmap.h>
> >>
> >> #include <media/i2c/adv7604.h>
> >> +#include <media/cec.h>
> >> #include <media/v4l2-ctrls.h>
> >> #include <media/v4l2-device.h>
> >> #include <media/v4l2-event.h>
> >> @@ -80,6 +81,8 @@ MODULE_LICENSE("GPL");
> >>
> >> #define ADV76XX_OP_SWAP_CB_CR (1 << 0)
> >>
> >> +#define ADV76XX_MAX_ADDRS (3)
> >> +
> >> enum adv76xx_type {
> >> ADV7604,
> >> ADV7611,
> >> @@ -184,6 +187,12 @@ struct adv76xx_state {
> >> u16 spa_port_a[2];
> >> struct v4l2_fract aspect_ratio;
> >> u32 rgb_quantization_range;
> >> +
> >> + struct cec_adapter *cec_adap;
> >> + u8 cec_addr[ADV76XX_MAX_ADDRS];
> >> + u8 cec_valid_addrs;
> >> + bool cec_enabled_adap;
> >> +
> >> struct workqueue_struct *work_queues;
> >> struct delayed_work delayed_work_enable_hotplug;
> >> bool restart_stdi_once;
> >> @@ -381,7 +390,8 @@ static inline int io_write(struct v4l2_subdev *sd, u8 reg, u8 val)
> >> return regmap_write(state->regmap[ADV76XX_PAGE_IO], reg, val);
> >> }
> >>
> >> -static inline int io_write_clr_set(struct v4l2_subdev *sd, u8 reg, u8 mask, u8 val)
> >> +static inline int io_write_clr_set(struct v4l2_subdev *sd, u8 reg, u8 mask,
> >> + u8 val)
> >> {
> >> return io_write(sd, reg, (io_read(sd, reg) & ~mask) | val);
> >> }
> >> @@ -414,6 +424,12 @@ static inline int cec_write(struct v4l2_subdev *sd, u8 reg, u8 val)
> >> return regmap_write(state->regmap[ADV76XX_PAGE_CEC], reg, val);
> >> }
> >>
> >> +static inline int cec_write_clr_set(struct v4l2_subdev *sd, u8 reg, u8 mask,
> >> + u8 val)
> >> +{
> >> + return cec_write(sd, reg, (cec_read(sd, reg) & ~mask) | val);
> >> +}
> >> +
> >> static inline int infoframe_read(struct v4l2_subdev *sd, u8 reg)
> >> {
> >> struct adv76xx_state *state = to_state(sd);
> >> @@ -872,9 +888,9 @@ static int adv76xx_s_detect_tx_5v_ctrl(struct v4l2_subdev *sd)
> >> {
> >> struct adv76xx_state *state = to_state(sd);
> >> const struct adv76xx_chip_info *info = state->info;
> >> + u16 cable_det = info->read_cable_det(sd);
> >>
> >> - return v4l2_ctrl_s_ctrl(state->detect_tx_5v_ctrl,
> >> - info->read_cable_det(sd));
> >> + return v4l2_ctrl_s_ctrl(state->detect_tx_5v_ctrl, cable_det);
> >> }
> >>
> >> static int find_and_set_predefined_video_timings(struct v4l2_subdev *sd,
> >> @@ -1900,6 +1916,210 @@ static int adv76xx_set_format(struct v4l2_subdev *sd,
> >> return 0;
> >> }
> >>
> >> +#if IS_ENABLED(CONFIG_VIDEO_ADV7604_CEC)
> >> +static void adv76xx_cec_tx_raw_status(struct v4l2_subdev *sd, u8 tx_raw_status)
> >> +{
> >> + struct adv76xx_state *state = to_state(sd);
> >> +
> >> + if ((cec_read(sd, 0x11) & 0x01) == 0) {
> >> + v4l2_dbg(1, debug, sd, "%s: tx raw: tx disabled\n", __func__);
> >> + return;
> >> + }
> >> +
> >> + if (tx_raw_status & 0x02) {
> >> + v4l2_dbg(1, debug, sd, "%s: tx raw: arbitration lost\n",
> >> + __func__);
> >> + cec_transmit_done(state->cec_adap, CEC_TX_STATUS_ARB_LOST,
> >> + 1, 0, 0, 0);
> >> + }
> >> + if (tx_raw_status & 0x04) {
> >> + u8 status;
> >> + u8 nack_cnt;
> >> + u8 low_drive_cnt;
> >> +
> >> + v4l2_dbg(1, debug, sd, "%s: tx raw: retry failed\n", __func__);
> >> + /*
> >> + * We set this status bit since this hardware performs
> >> + * retransmissions.
> >> + */
> >> + status = CEC_TX_STATUS_MAX_RETRIES;
> >> + nack_cnt = cec_read(sd, 0x14) & 0xf;
> >> + if (nack_cnt)
> >> + status |= CEC_TX_STATUS_NACK;
> >> + low_drive_cnt = cec_read(sd, 0x14) >> 4;
> >> + if (low_drive_cnt)
> >> + status |= CEC_TX_STATUS_LOW_DRIVE;
> >> + cec_transmit_done(state->cec_adap, status,
> >> + 0, nack_cnt, low_drive_cnt, 0);
> >> + return;
> >> + }
> >> + if (tx_raw_status & 0x01) {
> >> + v4l2_dbg(1, debug, sd, "%s: tx raw: ready ok\n", __func__);
> >> + cec_transmit_done(state->cec_adap, CEC_TX_STATUS_OK, 0, 0, 0, 0);
> >> + return;
> >> + }
> >> +}
> >> +
> >> +static void adv76xx_cec_isr(struct v4l2_subdev *sd, bool *handled)
> >> +{
> >> + struct adv76xx_state *state = to_state(sd);
> >> + u8 cec_irq;
> >> +
> >> + /* cec controller */
> >> + cec_irq = io_read(sd, 0x4d) & 0x0f;
> >> + if (!cec_irq)
> >> + return;
> >> +
> >> + v4l2_dbg(1, debug, sd, "%s: cec: irq 0x%x\n", __func__, cec_irq);
> >> + adv76xx_cec_tx_raw_status(sd, cec_irq);
> >> + if (cec_irq & 0x08) {
> >> + struct cec_msg msg;
> >> +
> >> + msg.len = cec_read(sd, 0x25) & 0x1f;
> >> + if (msg.len > 16)
> >> + msg.len = 16;
> >> +
> >> + if (msg.len) {
> >> + u8 i;
> >> +
> >> + for (i = 0; i < msg.len; i++)
> >> + msg.msg[i] = cec_read(sd, i + 0x15);
> >> + cec_write(sd, 0x26, 0x01); /* re-enable rx */
> >> + cec_received_msg(state->cec_adap, &msg);
> >> + }
> >> + }
> >> +
> >> + /* note: the bit order is swapped between 0x4d and 0x4e */
> >> + cec_irq = ((cec_irq & 0x08) >> 3) | ((cec_irq & 0x04) >> 1) |
> >> + ((cec_irq & 0x02) << 1) | ((cec_irq & 0x01) << 3);
> >> + io_write(sd, 0x4e, cec_irq);
> >> +
> >> + if (handled)
> >> + *handled = true;
> >> +}
> >> +
> >> +static int adv76xx_cec_adap_enable(struct cec_adapter *adap, bool enable)
> >> +{
> >> + struct adv76xx_state *state = adap->priv;
> >> + struct v4l2_subdev *sd = &state->sd;
> >> +
> >> + if (!state->cec_enabled_adap && enable) {
> >> + cec_write_clr_set(sd, 0x2a, 0x01, 0x01); /* power up cec */
> >> + cec_write(sd, 0x2c, 0x01); /* cec soft reset */
> >> + cec_write_clr_set(sd, 0x11, 0x01, 0); /* initially disable tx */
> >> + /* enabled irqs: */
> >> + /* tx: ready */
> >> + /* tx: arbitration lost */
> >> + /* tx: retry timeout */
> >> + /* rx: ready */
> >> + io_write_clr_set(sd, 0x50, 0x0f, 0x0f);
> >> + cec_write(sd, 0x26, 0x01); /* enable rx */
> >> + } else if (state->cec_enabled_adap && !enable) {
> >> + /* disable cec interrupts */
> >> + io_write_clr_set(sd, 0x50, 0x0f, 0x00);
> >> + /* disable address mask 1-3 */
> >> + cec_write_clr_set(sd, 0x27, 0x70, 0x00);
> >> + /* power down cec section */
> >> + cec_write_clr_set(sd, 0x2a, 0x01, 0x00);
> >> + state->cec_valid_addrs = 0;
> >> + }
> >> + state->cec_enabled_adap = enable;
> >> + adv76xx_s_detect_tx_5v_ctrl(sd);
> >> + return 0;
> >> +}
> >> +
> >> +static int adv76xx_cec_adap_log_addr(struct cec_adapter *adap, u8 addr)
> >> +{
> >> + struct adv76xx_state *state = adap->priv;
> >> + struct v4l2_subdev *sd = &state->sd;
> >> + unsigned i, free_idx = ADV76XX_MAX_ADDRS;
> >> +
> >> + if (!state->cec_enabled_adap)
> >> + return addr == CEC_LOG_ADDR_INVALID ? 0 : -EIO;
> >> +
> >> + if (addr == CEC_LOG_ADDR_INVALID) {
> >> + cec_write_clr_set(sd, 0x27, 0x70, 0);
> >> + state->cec_valid_addrs = 0;
> >> + return 0;
> >> + }
> >> +
> >> + for (i = 0; i < ADV76XX_MAX_ADDRS; i++) {
> >> + bool is_valid = state->cec_valid_addrs & (1 << i);
> >> +
> >> + if (free_idx == ADV76XX_MAX_ADDRS && !is_valid)
> >> + free_idx = i;
> >> + if (is_valid && state->cec_addr[i] == addr)
> >> + return 0;
> >> + }
> >> + if (i == ADV76XX_MAX_ADDRS) {
> >> + i = free_idx;
> >> + if (i == ADV76XX_MAX_ADDRS)
> >> + return -ENXIO;
> >> + }
> >> + state->cec_addr[i] = addr;
> >> + state->cec_valid_addrs |= 1 << i;
> >> +
> >> + switch (i) {
> >> + case 0:
> >> + /* enable address mask 0 */
> >> + cec_write_clr_set(sd, 0x27, 0x10, 0x10);
> >> + /* set address for mask 0 */
> >> + cec_write_clr_set(sd, 0x28, 0x0f, addr);
> >> + break;
> >> + case 1:
> >> + /* enable address mask 1 */
> >> + cec_write_clr_set(sd, 0x27, 0x20, 0x20);
> >> + /* set address for mask 1 */
> >> + cec_write_clr_set(sd, 0x28, 0xf0, addr << 4);
> >> + break;
> >> + case 2:
> >> + /* enable address mask 2 */
> >> + cec_write_clr_set(sd, 0x27, 0x40, 0x40);
> >> + /* set address for mask 1 */
> >> + cec_write_clr_set(sd, 0x29, 0x0f, addr);
> >> + break;
> >> + }
> >> + return 0;
> >> +}
> >> +
> >> +static int adv76xx_cec_adap_transmit(struct cec_adapter *adap, u8 attempts,
> >> + u32 signal_free_time, struct cec_msg *msg)
> >> +{
> >> + struct adv76xx_state *state = adap->priv;
> >> + struct v4l2_subdev *sd = &state->sd;
> >> + u8 len = msg->len;
> >> + unsigned i;
> >> +
> >> + /*
> >> + * The number of retries is the number of attempts - 1, but retry
> >> + * at least once. It's not clear if a value of 0 is allowed, so
> >> + * let's do at least one retry.
> >> + */
> >> + cec_write_clr_set(sd, 0x12, 0x70, max(1, attempts - 1) << 4);
> >> +
> >> + if (len > 16) {
> >> + v4l2_err(sd, "%s: len exceeded 16 (%d)\n", __func__, len);
> >> + return -EINVAL;
> >> + }
> >> +
> >> + /* write data */
> >> + for (i = 0; i < len; i++)
> >> + cec_write(sd, i, msg->msg[i]);
> >> +
> >> + /* set length (data + header) */
> >> + cec_write(sd, 0x10, len);
> >> + /* start transmit, enable tx */
> >> + cec_write(sd, 0x11, 0x01);
> >> + return 0;
> >> +}
> >> +
> >> +static const struct cec_adap_ops adv76xx_cec_adap_ops = {
> >> + .adap_enable = adv76xx_cec_adap_enable,
> >> + .adap_log_addr = adv76xx_cec_adap_log_addr,
> >> + .adap_transmit = adv76xx_cec_adap_transmit,
> >> +};
> >> +#endif
> >> +
> >> static int adv76xx_isr(struct v4l2_subdev *sd, u32 status, bool *handled)
> >> {
> >> struct adv76xx_state *state = to_state(sd);
> >> @@ -1945,6 +2165,11 @@ static int adv76xx_isr(struct v4l2_subdev *sd, u32 status, bool *handled)
> >> *handled = true;
> >> }
> >>
> >> +#if IS_ENABLED(CONFIG_VIDEO_ADV7604_CEC)
> >> + /* cec */
> >> + adv76xx_cec_isr(sd, handled);
> >> +#endif
> >> +
> >> /* tx 5v detect */
> >> tx_5v = irq_reg_0x70 & info->cable_det_mask;
> >> if (tx_5v) {
> >> @@ -1994,39 +2219,12 @@ static int adv76xx_get_edid(struct v4l2_subdev *sd, struct v4l2_edid *edid)
> >> return 0;
> >> }
> >>
> >> -static int get_edid_spa_location(const u8 *edid)
> >> -{
> >> - u8 d;
> >> -
> >> - if ((edid[0x7e] != 1) ||
> >> - (edid[0x80] != 0x02) ||
> >> - (edid[0x81] != 0x03)) {
> >> - return -1;
> >> - }
> >> -
> >> - /* search Vendor Specific Data Block (tag 3) */
> >> - d = edid[0x82] & 0x7f;
> >> - if (d > 4) {
> >> - int i = 0x84;
> >> - int end = 0x80 + d;
> >> -
> >> - do {
> >> - u8 tag = edid[i] >> 5;
> >> - u8 len = edid[i] & 0x1f;
> >> -
> >> - if ((tag == 3) && (len >= 5))
> >> - return i + 4;
> >> - i += len + 1;
> >> - } while (i < end);
> >> - }
> >> - return -1;
> >> -}
> >
> > Very likely, you can't drop the above, as it won't compile if !CEC.
> >
> > While CEC is under staging, no code here should use a function
> > defined there. Even afterwards, CEC should be an optional feature.
> > So, IMHO, it is better to move the EDID parsing code out of the
> > CEC core, putting them elsewhere.
>
> As mentioned above the cec-edid helper module isn't in staging.
Ok.
>
> >
> >> -
> >> static int adv76xx_set_edid(struct v4l2_subdev *sd, struct v4l2_edid *edid)
> >> {
> >> struct adv76xx_state *state = to_state(sd);
> >> const struct adv76xx_chip_info *info = state->info;
> >> - int spa_loc;
> >> + unsigned spa_loc;
> >> + u16 pa;
> >> int err;
> >> int i;
> >>
> >> @@ -2057,6 +2255,10 @@ static int adv76xx_set_edid(struct v4l2_subdev *sd, struct v4l2_edid *edid)
> >> edid->blocks = 2;
> >> return -E2BIG;
> >> }
> >> + pa = cec_get_edid_phys_addr(edid->edid, edid->blocks * 128, &spa_loc);
> >> + err = cec_phys_addr_validate(pa, &pa, NULL);
> >> + if (err)
> >> + return err;
> >>
> >> v4l2_dbg(2, debug, sd, "%s: write EDID pad %d, edid.present = 0x%x\n",
> >> __func__, edid->pad, state->edid.present);
> >> @@ -2066,9 +2268,12 @@ static int adv76xx_set_edid(struct v4l2_subdev *sd, struct v4l2_edid *edid)
> >> adv76xx_set_hpd(state, 0);
> >> rep_write_clr_set(sd, info->edid_enable_reg, 0x0f, 0x00);
> >>
> >> - spa_loc = get_edid_spa_location(edid->edid);
> >> - if (spa_loc < 0)
> >> - spa_loc = 0xc0; /* Default value [REF_02, p. 116] */
> >> + /*
> >> + * Return an error if no location of the source physical address
> >> + * was found.
> >> + */
> >> + if (spa_loc == 0)
> >> + return -EINVAL;
> >>
> >> switch (edid->pad) {
> >> case ADV76XX_PAD_HDMI_PORT_A:
> >> @@ -2128,6 +2333,7 @@ static int adv76xx_set_edid(struct v4l2_subdev *sd, struct v4l2_edid *edid)
> >> v4l2_err(sd, "error enabling edid (0x%x)\n", state->edid.present);
> >> return -EIO;
> >> }
> >> + cec_s_phys_addr(state->cec_adap, pa, false);
> >>
> >> /* enable hotplug after 100 ms */
> >> queue_delayed_work(state->work_queues,
> >> @@ -2252,8 +2458,19 @@ static int adv76xx_log_status(struct v4l2_subdev *sd)
> >> ((edid_enabled & 0x02) ? "Yes" : "No"),
> >> ((edid_enabled & 0x04) ? "Yes" : "No"),
> >> ((edid_enabled & 0x08) ? "Yes" : "No"));
> >> - v4l2_info(sd, "CEC: %s\n", !!(cec_read(sd, 0x2a) & 0x01) ?
> >> + v4l2_info(sd, "CEC: %s\n", state->cec_enabled_adap ?
> >> "enabled" : "disabled");
> >> + if (state->cec_enabled_adap) {
> >> + int i;
> >> +
> >> + for (i = 0; i < ADV76XX_MAX_ADDRS; i++) {
> >> + bool is_valid = state->cec_valid_addrs & (1 << i);
> >> +
> >> + if (is_valid)
> >> + v4l2_info(sd, "CEC Logical Address: 0x%x\n",
> >> + state->cec_addr[i]);
> >> + }
> >> + }
> >>
> >> v4l2_info(sd, "-----Signal status-----\n");
> >> cable_det = info->read_cable_det(sd);
> >> @@ -2363,6 +2580,24 @@ static int adv76xx_subscribe_event(struct v4l2_subdev *sd,
> >> }
> >> }
> >>
> >> +static int adv76xx_registered(struct v4l2_subdev *sd)
> >> +{
> >> + struct adv76xx_state *state = to_state(sd);
> >> + int err;
> >> +
> >> + err = cec_register_adapter(state->cec_adap);
> >> + if (err)
> >> + cec_delete_adapter(state->cec_adap);
> >> + return err;
> >> +}
> >> +
> >> +static void adv76xx_unregistered(struct v4l2_subdev *sd)
> >> +{
> >> + struct adv76xx_state *state = to_state(sd);
> >> +
> >> + cec_unregister_adapter(state->cec_adap);
> >> +}
> >> +
> >> /* ----------------------------------------------------------------------- */
> >>
> >> static const struct v4l2_ctrl_ops adv76xx_ctrl_ops = {
> >> @@ -2406,6 +2641,11 @@ static const struct v4l2_subdev_ops adv76xx_ops = {
> >> .pad = &adv76xx_pad_ops,
> >> };
> >>
> >> +static const struct v4l2_subdev_internal_ops adv76xx_int_ops = {
> >> + .registered = adv76xx_registered,
> >> + .unregistered = adv76xx_unregistered,
> >> +};
> >> +
> >> /* -------------------------- custom ctrls ---------------------------------- */
> >>
> >> static const struct v4l2_ctrl_config adv7604_ctrl_analog_sampling_phase = {
> >> @@ -3069,6 +3309,7 @@ static int adv76xx_probe(struct i2c_client *client,
> >> id->name, i2c_adapter_id(client->adapter),
> >> client->addr);
> >> sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | V4L2_SUBDEV_FL_HAS_EVENTS;
> >> + sd->internal_ops = &adv76xx_int_ops;
> >>
> >> /* Configure IO Regmap region */
> >> err = configure_regmap(state, ADV76XX_PAGE_IO);
> >> @@ -3212,6 +3453,18 @@ static int adv76xx_probe(struct i2c_client *client,
> >> err = adv76xx_core_init(sd);
> >> if (err)
> >> goto err_entity;
> >> +
> >> +#if IS_ENABLED(CONFIG_VIDEO_ADV7604_CEC)
> >> + state->cec_adap = cec_allocate_adapter(&adv76xx_cec_adap_ops,
> >> + state, dev_name(&client->dev),
> >> + CEC_CAP_TRANSMIT | CEC_CAP_LOG_ADDRS |
> >> + CEC_CAP_PASSTHROUGH | CEC_CAP_RC, ADV76XX_MAX_ADDRS,
> >> + &client->dev);
> >> + err = PTR_ERR_OR_ZERO(state->cec_adap);
> >> + if (err)
> >> + goto err_entity;
> >> +#endif
> >> +
> >> v4l2_info(sd, "%s found @ 0x%x (%s)\n", client->name,
> >> client->addr << 1, client->adapter->name);
> >>
> >> @@ -3240,6 +3493,13 @@ static int adv76xx_remove(struct i2c_client *client)
> >> struct v4l2_subdev *sd = i2c_get_clientdata(client);
> >> struct adv76xx_state *state = to_state(sd);
> >>
> >> + /* disable interrupts */
> >> + io_write(sd, 0x40, 0);
> >> + io_write(sd, 0x41, 0);
> >> + io_write(sd, 0x46, 0);
> >> + io_write(sd, 0x6e, 0);
> >> + io_write(sd, 0x73, 0);
> >> +
> >> cancel_delayed_work(&state->delayed_work_enable_hotplug);
> >> destroy_workqueue(state->work_queues);
> >> v4l2_async_unregister_subdev(sd);
> >
> >
> >
> > Thanks,
> > Mauro
> > --
> > To unsubscribe from this list: send the line "unsubscribe linux-media" in
> > the body of a message to majordomo@xxxxxxxxxxxxxxx
> > More majordomo info at http://vger.kernel.org/majordomo-info.html
> >
>
> Regards,
>
> Hans
Thanks,
Mauro
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