| // Copyright 2018 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. |
| |
| #include <limits.h> |
| |
| #include <ddk/binding.h> |
| #include <ddk/debug.h> |
| #include <ddk/device.h> |
| #include <ddk/metadata.h> |
| #include <ddk/platform-defs.h> |
| #include <ddk/protocol/platform/bus.h> |
| #include <lib/mmio/mmio.h> |
| #include <fbl/algorithm.h> |
| #include <hwreg/bitfields.h> |
| #include <lib/focaltech/focaltech.h> |
| #include <soc/mt8167/mt8167-hw.h> |
| |
| #include "mt8167.h" |
| |
| namespace { |
| |
| constexpr uintptr_t kPmicBaseAligned = |
| fbl::round_down<uintptr_t, uintptr_t>(MT8167_PMIC_WRAP_BASE, PAGE_SIZE); |
| constexpr size_t kPmicOffset = MT8167_PMIC_WRAP_BASE - kPmicBaseAligned; |
| constexpr size_t kPmicSizeAligned = |
| fbl::round_up<size_t, size_t>(kPmicOffset + MT8167_PMIC_WRAP_SIZE, PAGE_SIZE); |
| |
| constexpr uint32_t kDigLdoCon7 = 0x285; |
| constexpr uint16_t kVgp1Enable = 0x8000; |
| |
| } // namespace |
| |
| namespace board_mt8167 { |
| |
| class PmicCmd : public hwreg::RegisterBase<PmicCmd, uint32_t> { |
| public: |
| static auto Get() { return hwreg::RegisterAddr<PmicCmd>(0xa0 + kPmicOffset); } |
| |
| DEF_BIT(31, write); |
| DEF_FIELD(30, 16, addr); |
| DEF_FIELD(15, 0, data); |
| }; |
| |
| class PmicReadData : public hwreg::RegisterBase<PmicReadData, uint32_t> { |
| public: |
| static constexpr uint32_t kStateIdle = 0; |
| |
| static auto Get() { return hwreg::RegisterAddr<PmicReadData>(0xa4 + kPmicOffset); } |
| |
| DEF_FIELD(18, 16, status); |
| }; |
| |
| zx_status_t Mt8167::TouchInit() { |
| if (board_info_.vid != PDEV_VID_GOOGLE || board_info_.pid != PDEV_PID_CLEO) { |
| return ZX_OK; |
| } |
| |
| static constexpr uint32_t kDeviceId = FOCALTECH_DEVICE_FT6336; |
| |
| static const pbus_metadata_t touch_metadata[] = { |
| { |
| .type = DEVICE_METADATA_PRIVATE, |
| .data_buffer = &kDeviceId, |
| .data_size = sizeof(kDeviceId) |
| }, |
| }; |
| |
| pbus_dev_t touch_dev = {}; |
| touch_dev.name = "touch"; |
| touch_dev.vid = PDEV_VID_GENERIC; |
| touch_dev.did = PDEV_DID_FOCALTOUCH; |
| touch_dev.metadata_list = touch_metadata; |
| touch_dev.metadata_count = countof(touch_metadata); |
| |
| // Composite binding rules for focaltech touch driver. |
| constexpr zx_bind_inst_t root_match[] = { |
| BI_MATCH(), |
| }; |
| constexpr zx_bind_inst_t ft_i2c_match[] = { |
| BI_ABORT_IF(NE, BIND_PROTOCOL, ZX_PROTOCOL_I2C), |
| BI_ABORT_IF(NE, BIND_I2C_BUS_ID, 0), |
| BI_MATCH_IF(EQ, BIND_I2C_ADDRESS, 0x38), |
| }; |
| constexpr zx_bind_inst_t gpio_int_match[] = { |
| BI_ABORT_IF(NE, BIND_PROTOCOL, ZX_PROTOCOL_GPIO), |
| BI_MATCH_IF(EQ, BIND_GPIO_PIN, MT8167_GPIO_TOUCH_INT), |
| }; |
| constexpr zx_bind_inst_t gpio_reset_match[] = { |
| BI_ABORT_IF(NE, BIND_PROTOCOL, ZX_PROTOCOL_GPIO), |
| BI_MATCH_IF(EQ, BIND_GPIO_PIN, MT8167_GPIO_TOUCH_RST), |
| }; |
| const device_component_part_t ft_i2c_component[] = { |
| { fbl::count_of(root_match), root_match }, |
| { fbl::count_of(ft_i2c_match), ft_i2c_match }, |
| }; |
| const device_component_part_t gpio_int_component[] = { |
| { fbl::count_of(root_match), root_match }, |
| { fbl::count_of(gpio_int_match), gpio_int_match }, |
| }; |
| const device_component_part_t gpio_reset_component[] = { |
| { fbl::count_of(root_match), root_match }, |
| { fbl::count_of(gpio_reset_match), gpio_reset_match }, |
| }; |
| const device_component_t ft_components[] = { |
| { fbl::count_of(ft_i2c_component), ft_i2c_component }, |
| { fbl::count_of(gpio_int_component), gpio_int_component }, |
| { fbl::count_of(gpio_reset_component), gpio_reset_component }, |
| }; |
| |
| // Please do not use get_root_resource() in new code. See ZX-1497. |
| zx::unowned_resource root_resource(get_root_resource()); |
| std::optional<ddk::MmioBuffer> pmic_mmio; |
| auto status = ddk::MmioBuffer::Create(kPmicBaseAligned, kPmicSizeAligned, *root_resource, |
| ZX_CACHE_POLICY_UNCACHED_DEVICE, &pmic_mmio); |
| if (status != ZX_OK) { |
| zxlogf(ERROR, "%s: Failed to enable VGP1 regulator: %d\n", __FUNCTION__, status); |
| return status; |
| } |
| |
| while (PmicReadData::Get().ReadFrom(&(*pmic_mmio)).status() != PmicReadData::kStateIdle) {} |
| |
| PmicCmd::Get() |
| .FromValue(0) |
| .set_write(1) |
| .set_addr(kDigLdoCon7) |
| .set_data(kVgp1Enable) |
| .WriteTo(&(*pmic_mmio)); |
| |
| // platform device protocol is only needed to provide metadata to the driver. |
| // TODO(voydanoff) remove pdev after we have a better way to provide metadata to composite |
| // devices. |
| if ((status = pbus_.CompositeDeviceAdd(&touch_dev, ft_components, fbl::count_of(ft_components), |
| UINT32_MAX)) != ZX_OK) { |
| zxlogf(ERROR, "%s: Failed to add touch device: %d\n", __FUNCTION__, status); |
| } |
| |
| return status; |
| } |
| |
| } // namespace board_mt8167 |