| // 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 <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/focaltech/focaltech.h> |
| #include <soc/aml-s905d2/s905d2-gpio.h> |
| #include <soc/aml-s905d2/s905d2-hw.h> |
| #include <limits.h> |
| |
| #include "astro.h" |
| #include "astro-gpios.h" |
| |
| static const uint32_t device_id = FOCALTECH_DEVICE_FT3X27; |
| static const pbus_metadata_t ft3x27_touch_metadata[] = { |
| { |
| .type = DEVICE_METADATA_PRIVATE, |
| .data_buffer = &device_id, |
| .data_size = sizeof(device_id) |
| }, |
| }; |
| |
| static pbus_dev_t ft3x27_touch_dev = { |
| .name = "ft3x27-touch", |
| .vid = PDEV_VID_GENERIC, |
| .did = PDEV_DID_FOCALTOUCH, |
| .metadata_list = ft3x27_touch_metadata, |
| .metadata_count = countof(ft3x27_touch_metadata), |
| }; |
| |
| // Composite binding rules for focaltech touch driver. |
| static const zx_bind_inst_t root_match[] = { |
| BI_MATCH(), |
| }; |
| const zx_bind_inst_t ft_i2c_match[] = { |
| BI_ABORT_IF(NE, BIND_PROTOCOL, ZX_PROTOCOL_I2C), |
| BI_ABORT_IF(NE, BIND_I2C_BUS_ID, ASTRO_I2C_2), |
| BI_MATCH_IF(EQ, BIND_I2C_ADDRESS, I2C_FOCALTECH_TOUCH_ADDR), |
| }; |
| const zx_bind_inst_t goodix_i2c_match[] = { |
| BI_ABORT_IF(NE, BIND_PROTOCOL, ZX_PROTOCOL_I2C), |
| BI_ABORT_IF(NE, BIND_I2C_BUS_ID, ASTRO_I2C_2), |
| BI_MATCH_IF(EQ, BIND_I2C_ADDRESS, I2C_GOODIX_TOUCH_ADDR), |
| }; |
| static const zx_bind_inst_t gpio_int_match[] = { |
| BI_ABORT_IF(NE, BIND_PROTOCOL, ZX_PROTOCOL_GPIO), |
| BI_MATCH_IF(EQ, BIND_GPIO_PIN, GPIO_TOUCH_INTERRUPT), |
| }; |
| static const zx_bind_inst_t gpio_reset_match[] = { |
| BI_ABORT_IF(NE, BIND_PROTOCOL, ZX_PROTOCOL_GPIO), |
| BI_MATCH_IF(EQ, BIND_GPIO_PIN, GPIO_TOUCH_RESET), |
| }; |
| static const device_component_part_t ft_i2c_component[] = { |
| { countof(root_match), root_match }, |
| { countof(ft_i2c_match), ft_i2c_match }, |
| }; |
| static const device_component_part_t goodix_i2c_component[] = { |
| { countof(root_match), root_match }, |
| { countof(goodix_i2c_match), goodix_i2c_match }, |
| }; |
| static const device_component_part_t gpio_int_component[] = { |
| { countof(root_match), root_match }, |
| { countof(gpio_int_match), gpio_int_match }, |
| }; |
| static const device_component_part_t gpio_reset_component[] = { |
| { countof(root_match), root_match }, |
| { countof(gpio_reset_match), gpio_reset_match }, |
| }; |
| static const device_component_t ft_components[] = { |
| { countof(ft_i2c_component), ft_i2c_component }, |
| { countof(gpio_int_component), gpio_int_component }, |
| { countof(gpio_reset_component), gpio_reset_component }, |
| }; |
| static const device_component_t goodix_components[] = { |
| { countof(goodix_i2c_component), goodix_i2c_component }, |
| { countof(gpio_int_component), gpio_int_component }, |
| { countof(gpio_reset_component), gpio_reset_component }, |
| }; |
| |
| zx_status_t astro_touch_init(aml_bus_t* bus) { |
| |
| //Check the display ID pin to determine which driver device to add |
| gpio_impl_set_alt_function(&bus->gpio, S905D2_GPIOH(5), 0); |
| gpio_impl_config_in(&bus->gpio, S905D2_GPIOH(5), GPIO_NO_PULL); |
| uint8_t gpio_state; |
| /* Two variants of display are supported, one with BOE display panel and |
| ft3x27 touch controller, the other with INX panel and Goodix touch |
| controller. This GPIO input is used to identify each. |
| Logic 0 for BOE/ft3x27 combination |
| Logic 1 for Innolux/Goodix combination |
| */ |
| gpio_impl_read(&bus->gpio, S905D2_GPIOH(5), &gpio_state); |
| if (gpio_state) { |
| const zx_device_prop_t props[] = { |
| { BIND_PLATFORM_DEV_VID, 0, PDEV_VID_GOOGLE }, |
| { BIND_PLATFORM_DEV_PID, 0, PDEV_PID_ASTRO }, |
| { BIND_PLATFORM_DEV_DID, 0, PDEV_DID_ASTRO_GOODIXTOUCH }, |
| }; |
| |
| zx_status_t status = device_add_composite(bus->parent, "gt92xx-touch", props, |
| countof(props), goodix_components, |
| countof(goodix_components), UINT32_MAX); |
| if (status != ZX_OK) { |
| zxlogf(INFO, "astro_touch_init(gt92xx): composite_device_add failed: %d\n", status); |
| return status; |
| } |
| } else { |
| // 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. |
| zx_status_t status = pbus_composite_device_add(&bus->pbus, &ft3x27_touch_dev, ft_components, |
| countof(ft_components), UINT32_MAX); |
| if (status != ZX_OK) { |
| zxlogf(ERROR, "astro_touch_init(ft3x27): pbus_composite_device_add failed: %d\n", |
| status); |
| return status; |
| } |
| } |
| |
| return ZX_OK; |
| } |