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Subject: media: pulse8-cec: add support for FW v10 and up Author: Hans Verkuil hverkuil-cisco@xs4all.nl Date: Fri Nov 27 12:52:30 2020 +0100

Starting with firmware version 10 the GET/SET_HDMI_VERSION message was removed and GET/SET_AUTO_POWER_ON was added.

The removal of GET/SET_HDMI_VERSION caused the probe of the Pulse-Eight to fail. Add a version check to handle this gracefully.

Also show (but do not set) the Auto Power On value.

Signed-off-by: Hans Verkuil hverkuil-cisco@xs4all.nl Reported-by: Maxime Ripard mripard@kernel.org Tested-by: Maxime Ripard mripard@kernel.org Cc: stable@vger.kernel.org Signed-off-by: Mauro Carvalho Chehab mchehab+huawei@kernel.org

drivers/media/cec/usb/pulse8/pulse8-cec.c | 43 +++++++++++++++++++++---------- 1 file changed, 30 insertions(+), 13 deletions(-)

---

diff --git a/drivers/media/cec/usb/pulse8/pulse8-cec.c b/drivers/media/cec/usb/pulse8/pulse8-cec.c index 5d3a3f775bc8..04b13cdc38d2 100644 --- a/drivers/media/cec/usb/pulse8/pulse8-cec.c +++ b/drivers/media/cec/usb/pulse8/pulse8-cec.c @@ -88,13 +88,15 @@ enum pulse8_msgcodes { MSGCODE_SET_PHYSICAL_ADDRESS, /* 0x20 */ MSGCODE_GET_DEVICE_TYPE, MSGCODE_SET_DEVICE_TYPE, - MSGCODE_GET_HDMI_VERSION, + MSGCODE_GET_HDMI_VERSION, /* Removed in FW >= 10 */ MSGCODE_SET_HDMI_VERSION, MSGCODE_GET_OSD_NAME, MSGCODE_SET_OSD_NAME, MSGCODE_WRITE_EEPROM, MSGCODE_GET_ADAPTER_TYPE, /* 0x28 */ MSGCODE_SET_ACTIVE_SOURCE, + MSGCODE_GET_AUTO_POWER_ON, /* New for FW >= 10 */ + MSGCODE_SET_AUTO_POWER_ON,

MSGCODE_FRAME_EOM = 0x80, MSGCODE_FRAME_ACK = 0x40, @@ -143,6 +145,8 @@ static const char * const pulse8_msgnames[] = { "WRITE_EEPROM", "GET_ADAPTER_TYPE", "SET_ACTIVE_SOURCE", + "GET_AUTO_POWER_ON", + "SET_AUTO_POWER_ON", };

static const char *pulse8_msgname(u8 cmd) @@ -579,12 +583,14 @@ static int pulse8_cec_adap_log_addr(struct cec_adapter *adap, u8 log_addr) if (err) goto unlock;

- cmd[0] = MSGCODE_SET_HDMI_VERSION; - cmd[1] = adap->log_addrs.cec_version; - err = pulse8_send_and_wait(pulse8, cmd, 2, - MSGCODE_COMMAND_ACCEPTED, 0); - if (err) - goto unlock; + if (pulse8->vers < 10) { + cmd[0] = MSGCODE_SET_HDMI_VERSION; + cmd[1] = adap->log_addrs.cec_version; + err = pulse8_send_and_wait(pulse8, cmd, 2, + MSGCODE_COMMAND_ACCEPTED, 0); + if (err) + goto unlock; + }

if (adap->log_addrs.osd_name[0]) { size_t osd_len = strlen(adap->log_addrs.osd_name); @@ -691,6 +697,14 @@ static int pulse8_setup(struct pulse8 *pulse8, struct serio *serio, dev_dbg(pulse8->dev, "Autonomous mode: %s", data[0] ? "on" : "off");

+ if (pulse8->vers >= 10) { + cmd[0] = MSGCODE_GET_AUTO_POWER_ON; + err = pulse8_send_and_wait(pulse8, cmd, 1, cmd[0], 1); + if (!err) + dev_dbg(pulse8->dev, "Auto Power On: %s", + data[0] ? "on" : "off"); + } + cmd[0] = MSGCODE_GET_DEVICE_TYPE; err = pulse8_send_and_wait(pulse8, cmd, 1, cmd[0], 1); if (err) @@ -752,12 +766,15 @@ static int pulse8_setup(struct pulse8 *pulse8, struct serio *serio, dev_dbg(pulse8->dev, "Physical address: %x.%x.%x.%x\n", cec_phys_addr_exp(*pa));

- cmd[0] = MSGCODE_GET_HDMI_VERSION; - err = pulse8_send_and_wait(pulse8, cmd, 1, cmd[0], 1); - if (err) - return err; - log_addrs->cec_version = data[0]; - dev_dbg(pulse8->dev, "CEC version: %d\n", log_addrs->cec_version); + log_addrs->cec_version = CEC_OP_CEC_VERSION_1_4; + if (pulse8->vers < 10) { + cmd[0] = MSGCODE_GET_HDMI_VERSION; + err = pulse8_send_and_wait(pulse8, cmd, 1, cmd[0], 1); + if (err) + return err; + log_addrs->cec_version = data[0]; + dev_dbg(pulse8->dev, "CEC version: %d\n", log_addrs->cec_version); + }

cmd[0] = MSGCODE_GET_OSD_NAME; err = pulse8_send_and_wait(pulse8, cmd, 1, cmd[0], 0);