| // Copyright 2019 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef SRC_DEVICES_GPIO_DRIVERS_AS370_GPIO_AS370_GPIO_H_ |
| #define SRC_DEVICES_GPIO_DRIVERS_AS370_GPIO_AS370_GPIO_H_ |
| |
| #include <lib/mmio/mmio.h> |
| #include <threads.h> |
| |
| #include <ddktl/device.h> |
| #include <ddktl/protocol/gpioimpl.h> |
| #include <fbl/array.h> |
| #include <fbl/vector.h> |
| #include <soc/synaptics/gpio.h> |
| |
| namespace gpio { |
| |
| class As370Gpio : public ddk::Device<As370Gpio, ddk::Unbindable>, |
| public ddk::GpioImplProtocol<As370Gpio, ddk::base_protocol> { |
| public: |
| static zx_status_t Create(void* ctx, zx_device_t* parent); |
| |
| As370Gpio(zx_device_t* parent, fbl::Vector<ddk::MmioBuffer> pinmux_mmios, |
| fbl::Vector<ddk::MmioBuffer> gpio_mmios, fbl::Array<zx::interrupt> port_interrupts, |
| const synaptics::PinmuxMetadata& pinmux_metadata) |
| : ddk::Device<As370Gpio, ddk::Unbindable>(parent), |
| pinmux_mmios_(std::move(pinmux_mmios)), |
| gpio_mmios_(std::move(gpio_mmios)), |
| port_interrupts_(std::move(port_interrupts)), |
| pinmux_metadata_(pinmux_metadata) {} |
| virtual ~As370Gpio() = default; |
| |
| void DdkUnbind(ddk::UnbindTxn txn); |
| void DdkRelease(); |
| |
| zx_status_t GpioImplConfigIn(uint32_t index, uint32_t flags); |
| zx_status_t GpioImplConfigOut(uint32_t index, uint8_t initial_value); |
| zx_status_t GpioImplSetAltFunction(uint32_t index, uint64_t function); |
| zx_status_t GpioImplSetDriveStrength(uint32_t index, uint64_t ua, uint64_t* out_actual_ua); |
| zx_status_t GpioImplRead(uint32_t index, uint8_t* out_value); |
| zx_status_t GpioImplWrite(uint32_t index, uint8_t value); |
| zx_status_t GpioImplGetInterrupt(uint32_t index, uint32_t flags, zx::interrupt* out_irq); |
| zx_status_t GpioImplReleaseInterrupt(uint32_t index); |
| zx_status_t GpioImplSetPolarity(uint32_t index, gpio_polarity_t polarity); |
| |
| zx_status_t Init(); |
| void Shutdown(); |
| |
| protected: |
| fbl::Vector<ddk::MmioBuffer> pinmux_mmios_; |
| fbl::Vector<ddk::MmioBuffer> gpio_mmios_; |
| |
| private: |
| zx_status_t Bind(); |
| int Thread(); |
| inline void SetInterruptPolarity(uint32_t index, bool is_high); |
| inline void SetInterruptEdge(uint32_t index, bool is_edge); |
| inline bool IsInterruptEnabled(uint64_t index); |
| |
| thrd_t thread_; |
| fbl::Array<zx::interrupt> port_interrupts_; |
| fbl::Array<zx::interrupt> gpio_interrupts_; |
| zx::port port_; |
| const synaptics::PinmuxMetadata pinmux_metadata_; |
| }; |
| |
| } // namespace gpio |
| |
| #endif // SRC_DEVICES_GPIO_DRIVERS_AS370_GPIO_AS370_GPIO_H_ |