| Message ID | 20230310095635.813262-5-hpa@redhat.com |
|---|---|
| State | New |
| Headers | show |
| Series | leds: tps68470: LED driver for TPS68470 | expand |
Hi Kate On 10/03/2023 09:56, Kate Hsuan wrote: > From: Hans de Goede <hdegoede@redhat.com> > > All currently known models using the tps68470 PMIC have a privacy LED for > the back sensor (first ACPI consumer dev of the PMIC) connected to the > ileda output of the PMIC. > > Add a LED lookup table entry for this, so that the v4l2-core code turns on > the LED when streaming from the sensor. > > Signed-off-by: Hans de Goede <hdegoede@redhat.com> > --- > drivers/platform/x86/intel/int3472/tps68470.c | 30 +++++++++++++++++-- > 1 file changed, 28 insertions(+), 2 deletions(-) > > diff --git a/drivers/platform/x86/intel/int3472/tps68470.c b/drivers/platform/x86/intel/int3472/tps68470.c > index 82ef022f8916..a53de9cd0540 100644 > --- a/drivers/platform/x86/intel/int3472/tps68470.c > +++ b/drivers/platform/x86/intel/int3472/tps68470.c > @@ -140,11 +140,18 @@ skl_int3472_fill_clk_pdata(struct device *dev, struct tps68470_clk_platform_data > return n_consumers; > } > > +static void skl_int3472_tps68470_unregister_led_lookup(void *led_lookup) > +{ > + led_remove_lookup(led_lookup); > +} > + > static int skl_int3472_tps68470_probe(struct i2c_client *client) > { > - struct acpi_device *adev = ACPI_COMPANION(&client->dev); > + struct device *dev = &client->dev; > + struct acpi_device *adev = ACPI_COMPANION(dev); > const struct int3472_tps68470_board_data *board_data; > struct tps68470_clk_platform_data *clk_pdata; > + struct led_lookup_data *led_lookup; > struct mfd_cell *cells; > struct regmap *regmap; > int n_consumers; > @@ -177,6 +184,25 @@ static int skl_int3472_tps68470_probe(struct i2c_client *client) > if (!board_data) > return dev_err_probe(&client->dev, -ENODEV, "No board-data found for this model\n"); > > + /* Add a LED lookup table entry for the privacy LED */ > + led_lookup = devm_kzalloc(&client->dev, sizeof(*led_lookup), GFP_KERNEL); > + if (!led_lookup) > + return -ENOMEM; > + > + ret = skl_int3472_get_sensor_adev_and_name(&client->dev, NULL, &led_lookup->dev_id); > + if (ret) > + return ret; > + > + led_lookup->provider = "tps68470-ileda"; > + led_lookup->con_id = "privacy-led"; > + led_add_lookup(led_lookup); > + I'm not so sure about this one, because whilst the discrete type INT3472's only have a single dependent, on lots of platforms the TPS68470 type has 2. skl_int3472_get_sensor_adev_and_name() will just get those attributes of the first dependent; that conceivably might not be the ov5693. If it returns the ov7251's attributes this would assign the wrong LED to it, as that one needs the IR LED to function. I think that this functionality probably needs to be added to the board data returned by int3472_tps68470_get_board_data(), just as the GPIO lookups are. > + ret = devm_add_action_or_reset(&client->dev,. > + skl_int3472_tps68470_unregister_led_lookup, > + led_lookup); > + if (ret) > + return ret; > + > cells = kcalloc(TPS68470_WIN_MFD_CELL_COUNT, sizeof(*cells), GFP_KERNEL); > if (!cells) > return -ENOMEM; > @@ -259,4 +285,4 @@ module_i2c_driver(int3472_tps68470); > MODULE_DESCRIPTION("Intel SkyLake INT3472 ACPI TPS68470 Device Driver"); > MODULE_AUTHOR("Daniel Scally <djrscally@gmail.com>"); > MODULE_LICENSE("GPL v2"); > -MODULE_SOFTDEP("pre: clk-tps68470 tps68470-regulator"); > +MODULE_SOFTDEP("pre: clk-tps68470 tps68470-regulator leds-tps68470");
diff --git a/drivers/platform/x86/intel/int3472/tps68470.c b/drivers/platform/x86/intel/int3472/tps68470.c index 82ef022f8916..a53de9cd0540 100644 --- a/drivers/platform/x86/intel/int3472/tps68470.c +++ b/drivers/platform/x86/intel/int3472/tps68470.c @@ -140,11 +140,18 @@ skl_int3472_fill_clk_pdata(struct device *dev, struct tps68470_clk_platform_data return n_consumers; } +static void skl_int3472_tps68470_unregister_led_lookup(void *led_lookup) +{ + led_remove_lookup(led_lookup); +} + static int skl_int3472_tps68470_probe(struct i2c_client *client) { - struct acpi_device *adev = ACPI_COMPANION(&client->dev); + struct device *dev = &client->dev; + struct acpi_device *adev = ACPI_COMPANION(dev); const struct int3472_tps68470_board_data *board_data; struct tps68470_clk_platform_data *clk_pdata; + struct led_lookup_data *led_lookup; struct mfd_cell *cells; struct regmap *regmap; int n_consumers; @@ -177,6 +184,25 @@ static int skl_int3472_tps68470_probe(struct i2c_client *client) if (!board_data) return dev_err_probe(&client->dev, -ENODEV, "No board-data found for this model\n"); + /* Add a LED lookup table entry for the privacy LED */ + led_lookup = devm_kzalloc(&client->dev, sizeof(*led_lookup), GFP_KERNEL); + if (!led_lookup) + return -ENOMEM; + + ret = skl_int3472_get_sensor_adev_and_name(&client->dev, NULL, &led_lookup->dev_id); + if (ret) + return ret; + + led_lookup->provider = "tps68470-ileda"; + led_lookup->con_id = "privacy-led"; + led_add_lookup(led_lookup); + + ret = devm_add_action_or_reset(&client->dev, + skl_int3472_tps68470_unregister_led_lookup, + led_lookup); + if (ret) + return ret; + cells = kcalloc(TPS68470_WIN_MFD_CELL_COUNT, sizeof(*cells), GFP_KERNEL); if (!cells) return -ENOMEM; @@ -259,4 +285,4 @@ module_i2c_driver(int3472_tps68470); MODULE_DESCRIPTION("Intel SkyLake INT3472 ACPI TPS68470 Device Driver"); MODULE_AUTHOR("Daniel Scally <djrscally@gmail.com>"); MODULE_LICENSE("GPL v2"); -MODULE_SOFTDEP("pre: clk-tps68470 tps68470-regulator"); +MODULE_SOFTDEP("pre: clk-tps68470 tps68470-regulator leds-tps68470");