Introduce airoha-mfd driver in order to load pinctrl and pwm drivers for
EN7581 SoC. airoha-mfd is needed since both pinctrl and pwm drivers
needs to access the same memory block (gpio memory region) to configure
{gio,irq}_chip and pwm functionalities respectively, so model them as
childs of a parent mfd driver.
Current EN7581 pinctrl driver supports the following functionalities:
- pin multiplexing via chip_scu syscon
- pin pull-up, pull-down, open-drain, current strength,
{input,output}_enable, output_{low,high} via chip_scu syscon
- gpio controller
- irq controller
---
Changes in v5:
- use spin_lock in airoha_pinctrl_rmw instead of a mutex since it can run
in interrupt context
- remove unused includes in pinctrl driver
- since the irq_chip is immutable, allocate the gpio_irq_chip struct
statically in pinctrl driver
- rely on regmap APIs in pinctrl driver but keep the spin_lock local to the
driver
- rely on guard/guard_scope APIs in pinctrl driver
- improve naming convention pinctrl driver
- introduce airoha_pinconf_set_pin_value utility routine
- Link to v4: https://lore.kernel.org/r/20240911-en7581-pinctrl-v4-0-60ac93d760bb@xxxxxxxxxx
Changes in v4:
- add 'Limitation' description in pwm driver
- fix comments in pwm driver
- rely on mfd->base __iomem pointer in pwm driver, modify register
offsets according to it and get rid of sgpio_cfg, flash_cfg and
cycle_cfg pointers
- simplify register utility routines in pwm driver
- use 'generator' instead of 'waveform' suffix for pwm routines
- fix possible overflow calculating duty cycle in pwm driver
- do not modify pwm state in free callback in pwm driver
- cap the maximum period in pwm driver
- do not allow inverse polarity in pwm driver
- do not set of_xlate callback in the pwm driver and allow the stack to
do it
- fix MAINTAINERS file for airoha pinctrl driver
- fix undefined reference to __ffsdi2 in pinctrl driver
- simplify airoha,en7581-gpio-sysctl.yam binding
- Link to v3: https://lore.kernel.org/r/20240831-en7581-pinctrl-v3-0-98eebfb4da66@xxxxxxxxxx
Changes in v3:
- introduce airoha-mfd driver
- add pwm driver to the same series
- model pinctrl and pwm drivers as childs of a parent mfd driver.
- access chip-scu memory region in pinctrl driver via syscon
- introduce a single airoha,en7581-gpio-sysctl.yaml binding and get rid
of dedicated bindings for pinctrl and pwm
- add airoha,en7581-chip-scu.yaml binding do the series
- Link to v2: https://lore.kernel.org/r/20240822-en7581-pinctrl-v2-0-ba1559173a7f@xxxxxxxxxx
Changes in v2:
- Fix compilation errors
- Collapse some register mappings for gpio and irq controllers
- update dt-bindings according to new register mapping
- fix some dt-bindings errors
- Link to v1: https://lore.kernel.org/all/cover.1723392444.git.lorenzo@xxxxxxxxxx/
---
Benjamin Larsson (1):
pwm: airoha: Add support for EN7581 SoC
Christian Marangi (2):
dt-bindings: mfd: Add support for Airoha EN7581 GPIO System Controller
mfd: airoha: Add support for Airoha EN7581 MFD
Lorenzo Bianconi (2):
dt-bindings: arm: airoha: Add the chip-scu node for EN7581 SoC
pinctrl: airoha: Add support for EN7581 SoC
.../bindings/arm/airoha,en7581-chip-scu.yaml | 42 +
.../bindings/mfd/airoha,en7581-gpio-sysctl.yaml | 433 +++
MAINTAINERS | 7 +
drivers/mfd/Kconfig | 8 +
drivers/mfd/Makefile | 2 +
drivers/mfd/airoha-en7581-gpio-mfd.c | 72 +
drivers/pinctrl/mediatek/Kconfig | 17 +-
drivers/pinctrl/mediatek/Makefile | 1 +
drivers/pinctrl/mediatek/pinctrl-airoha.c | 3007 ++++++++++++++++++++
drivers/pwm/Kconfig | 10 +
drivers/pwm/Makefile | 1 +
drivers/pwm/pwm-airoha.c | 414 +++
include/linux/mfd/airoha-en7581-mfd.h | 9 +
13 files changed, 4022 insertions(+), 1 deletion(-)
---
base-commit: 437d220f284a16e52c7d7f819e4a1a7e25fe8fe9
change-id: 20240818-en7581-pinctrl-1bf120154be0
prerequisite-change-id: 20240705-for-6-11-bpf-a349efc08df8:v2
Best regards,
--
Lorenzo Bianconi <lorenzo@xxxxxxxxxx>
