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[PATCH 0/3] PCA I2C GPIO expanders
From: |
Titus Rwantare |
Subject: |
[PATCH 0/3] PCA I2C GPIO expanders |
Date: |
Mon, 6 Feb 2023 19:49:33 +0000 |
This patch series contains a set of i2c GPIO expanders,
with support for 4, 8, and 16 GPIO connections.
The devices are configured as GPIO outputs by default, but can have pins
configured to be inputs with qmp commands.
For example, the following snippet in a board file for a system,
configures a 16 bit pca6416 to have pins 8-11 as inputs, then asserts
them.
dev = DEVICE(i2c_slave_create_simple(npcm7xx_i2c_get_bus(soc, 3),
"pca6416", 0x72));
object_property_set_uint(OBJECT(dev), "gpio_config", 0x0F00, &error_abort);
object_property_set_uint(OBJECT(dev), "gpio_input", 0x0F00, &error_abort);
We currently use these to test hardware presence and LEDs in simulation.
Thanks
Titus Rwantare (3):
hw/gpio: add PCA6414 i2c GPIO expander
hw/gpio: add PCA9538 8-bit GPIO expander
hw/gpio: add PCA9536 i2c gpio expander
hw/arm/Kconfig | 1 +
hw/gpio/meson.build | 1 +
hw/gpio/pca_i2c_gpio.c | 482 ++++++++++++++++++++++++++++++++
hw/gpio/trace-events | 5 +
hw/i2c/Kconfig | 4 +
include/hw/gpio/pca_i2c_gpio.h | 81 ++++++
tests/qtest/meson.build | 1 +
tests/qtest/pca_i2c_gpio-test.c | 169 +++++++++++
8 files changed, 744 insertions(+)
create mode 100644 hw/gpio/pca_i2c_gpio.c
create mode 100644 include/hw/gpio/pca_i2c_gpio.h
create mode 100644 tests/qtest/pca_i2c_gpio-test.c
--
2.39.1.519.gcb327c4b5f-goog
- [PATCH 0/3] PCA I2C GPIO expanders,
Titus Rwantare <=
- [PATCH 2/3] hw/gpio: add PCA9538 8-bit GPIO expander, Titus Rwantare, 2023/02/06
- [PATCH 1/3] hw/gpio: add PCA6414 i2c GPIO expander, Titus Rwantare, 2023/02/06
- Re: [PATCH 1/3] hw/gpio: add PCA6414 i2c GPIO expander, Corey Minyard, 2023/02/06
- RE: [PATCH 1/3] hw/gpio: add PCA6414 i2c GPIO expander, Dong, Eddie, 2023/02/06
- Re: [PATCH 1/3] hw/gpio: add PCA6414 i2c GPIO expander, Joel Stanley, 2023/02/06