From c928e634b49264ec46f67b2df1c180bdd3b977e4 Mon Sep 17 00:00:00 2001 From: Jack Andersen Date: Mon, 18 Oct 2021 13:25:41 +0200 Subject: [PATCH] mfd: dln2: Add cell for initializing DLN2 ADC MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit commit 313c84b5ae4104e48c661d5d706f9f4c425fd50f upstream. This patch extends the DLN2 driver; adding cell for adc_dln2 module. The original patch[1] fell through the cracks when the driver was added so ADC has never actually been usable. That patch did not have ACPI support which was added in v5.9, so the oldest supported version this current patch can be backported to is 5.10. [1] https://www.spinics.net/lists/linux-iio/msg33975.html Cc: # 5.10+ Signed-off-by: Jack Andersen Signed-off-by: Noralf Trønnes Signed-off-by: Lee Jones Link: https://lore.kernel.org/r/20211018112541.25466-1-noralf@tronnes.org Signed-off-by: Greg Kroah-Hartman --- drivers/mfd/dln2.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/drivers/mfd/dln2.c b/drivers/mfd/dln2.c index 83e676a096dc1..852129ea07666 100644 --- a/drivers/mfd/dln2.c +++ b/drivers/mfd/dln2.c @@ -50,6 +50,7 @@ enum dln2_handle { DLN2_HANDLE_GPIO, DLN2_HANDLE_I2C, DLN2_HANDLE_SPI, + DLN2_HANDLE_ADC, DLN2_HANDLES }; @@ -653,6 +654,7 @@ enum { DLN2_ACPI_MATCH_GPIO = 0, DLN2_ACPI_MATCH_I2C = 1, DLN2_ACPI_MATCH_SPI = 2, + DLN2_ACPI_MATCH_ADC = 3, }; static struct dln2_platform_data dln2_pdata_gpio = { @@ -683,6 +685,16 @@ static struct mfd_cell_acpi_match dln2_acpi_match_spi = { .adr = DLN2_ACPI_MATCH_SPI, }; +/* Only one ADC port supported */ +static struct dln2_platform_data dln2_pdata_adc = { + .handle = DLN2_HANDLE_ADC, + .port = 0, +}; + +static struct mfd_cell_acpi_match dln2_acpi_match_adc = { + .adr = DLN2_ACPI_MATCH_ADC, +}; + static const struct mfd_cell dln2_devs[] = { { .name = "dln2-gpio", @@ -702,6 +714,12 @@ static const struct mfd_cell dln2_devs[] = { .platform_data = &dln2_pdata_spi, .pdata_size = sizeof(struct dln2_platform_data), }, + { + .name = "dln2-adc", + .acpi_match = &dln2_acpi_match_adc, + .platform_data = &dln2_pdata_adc, + .pdata_size = sizeof(struct dln2_platform_data), + }, }; static void dln2_stop(struct dln2_dev *dln2)