Rizwan Qureshi (rizwan.qureshi@intel.com) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/18066
-gerrit
commit 00da8147898b3f0d56615b7d61afc4e068aab200 Author: Rizwan Qureshi rizwan.qureshi@intel.com Date: Mon Jan 9 22:58:04 2017 +0530
drivers/i2c/ovXXXX:[WIP] Add generic i2c driver for OV cameras
Add generic i2c driver for OV cameras
Change-Id: I64afc42b898c866f81ed00bbca99e191f7d48c5a Signed-off-by: Rizwan Qureshi rizwan.qureshi@intel.com --- src/drivers/i2c/ovXXXX/Kconfig | 2 + src/drivers/i2c/ovXXXX/Makefile.inc | 1 + src/drivers/i2c/ovXXXX/chip.h | 55 ++++++++++++++++++ src/drivers/i2c/ovXXXX/ovXXXX.c | 112 ++++++++++++++++++++++++++++++++++++ 4 files changed, 170 insertions(+)
diff --git a/src/drivers/i2c/ovXXXX/Kconfig b/src/drivers/i2c/ovXXXX/Kconfig new file mode 100644 index 0000000..a853428 --- /dev/null +++ b/src/drivers/i2c/ovXXXX/Kconfig @@ -0,0 +1,2 @@ +config DRIVERS_I2C_OVXXXX + bool diff --git a/src/drivers/i2c/ovXXXX/Makefile.inc b/src/drivers/i2c/ovXXXX/Makefile.inc new file mode 100644 index 0000000..70e2d16 --- /dev/null +++ b/src/drivers/i2c/ovXXXX/Makefile.inc @@ -0,0 +1 @@ +ramstage-$(CONFIG_DRIVERS_I2C_OVXXXX) += ovXXXX.c diff --git a/src/drivers/i2c/ovXXXX/chip.h b/src/drivers/i2c/ovXXXX/chip.h new file mode 100644 index 0000000..ec86bca --- /dev/null +++ b/src/drivers/i2c/ovXXXX/chip.h @@ -0,0 +1,55 @@ +#include <arch/acpi_device.h> + +#define MAX_SSDB_BUF 94 + +typedef union { + uint8_t ssdb_arr[MAX_SSDB_BUF]; + struct { + uint8_t version; + uint8_t sensor_card_sku; + uint8_t csi2_data_stream_interface[16]; + uint16_t bdf_value; + uint32_t dphy_link_en_fuses; + uint32_t lanes_clock_division; + uint8_t link_used; + uint8_t lanes_used; + uint32_t csi_rx_dly_cnt_termen_clane; + uint32_t csi_rx_dly_cnt_settle_clane; + uint32_t csi_rx_dly_cnt_termen_dlane0; + uint32_t csi_rx_dly_cnt_settle_dlane0; + uint32_t csi_rx_dly_cnt_termen_dlane1; + uint32_t csi_rx_dly_cnt_settle_dlane1; + uint32_t csi_rx_dly_cnt_termen_dlane2; + uint32_t csi_rx_dly_cnt_settle_dlane2; + uint32_t csi_rx_dly_cnt_termen_dlane3; + uint32_t csi_rx_dly_cnt_settle_dlane3; + uint32_t max_lane_speed; + uint8_t sensor_calibration_file_index; + uint8_t sensor_calibration_file_index_mbz[3]; + uint8_t rom_type; + uint8_t vcm_type; + uint8_t platform; + uint8_t platform_sub; + uint8_t flash_support; + uint8_t privacy_led; + uint8_t degree; /* Camera module rotation */ + uint8_t mipi_define; + uint32_t mclk; + uint8_t control_logic_id; + uint8_t mipi_data_format; + uint8_t silicon_version; + uint8_t customer_id; + }ssdb; +}__attribute__((packed))ovXXXX_ssdb; + +struct drivers_i2c_ovXXXX_config { + + /* I2C Bus Frequency in Hertz (default 400kHz) */ + unsigned bus_speed; + ovXXXX_ssdb buf; + uint8_t vcm_addr; + uint8_t eeprom0_addr; + const char acpi_hid[8]; + const char acpi_name[5]; + uint64_t acpi_uid; +}; diff --git a/src/drivers/i2c/ovXXXX/ovXXXX.c b/src/drivers/i2c/ovXXXX/ovXXXX.c new file mode 100644 index 0000000..cf9c6fb --- /dev/null +++ b/src/drivers/i2c/ovXXXX/ovXXXX.c @@ -0,0 +1,112 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2016 Google Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <arch/acpi.h> +#include <arch/acpi_device.h> +#include <arch/acpigen.h> +#include <console/console.h> +#include <device/i2c.h> +#include <device/device.h> +#include <device/path.h> +#include <stdint.h> +#include <string.h> +#include "chip.h" + +#if IS_ENABLED(CONFIG_HAVE_ACPI_TABLES) + +static void ovXXXX_fill_ssdt(struct device *dev) +{ + struct drivers_i2c_ovXXXX_config *config = dev->chip_info; + const char *scope = acpi_device_scope(dev); + struct acpi_i2c i2c = { + .address = dev->path.i2c.device, + .mode_10bit = dev->path.i2c.mode_10bit, + .speed = config->bus_speed ? : I2C_SPEED_FAST, + .resource = scope, + }; + struct acpi_i2c i2c_vcm = { + .address = config->vcm_addr, + .mode_10bit = dev->path.i2c.mode_10bit, + .speed = config->bus_speed ? : I2C_SPEED_FAST, + .resource = scope, + }; + + if (!dev->enabled || !scope) + return; + + /* Device */ + acpigen_write_scope(scope); + acpigen_write_device(acpi_device_name(dev)); + acpigen_write_name_string("_HID", config->acpi_hid); + acpigen_write_name_integer("_UID", config->acpi_uid); + acpigen_write_name_string("_DDN", dev->chip_ops->name); + acpigen_write_STA(ACPI_STATUS_DEVICE_ALL_ON); + + /* Resources */ +// acpigen_write_method("_CRS", 0) + acpigen_write_name("_CRS"); + acpigen_write_resourcetemplate_header(); + acpi_device_write_i2c(&i2c); + acpi_device_write_i2c(&i2c_vcm); +/* + int i; + for (i = 0; i < 4; i++) { + struct acpi_i2c i2c_eeprom = { + .address = config->eeprom0_addr + i, + .mode_10bit = dev->path.i2c.mode_10bit, + .speed = config->bus_speed ? : I2C_SPEED_FAST, + .resource = scope, + }; + acpi_device_write_i2c(&i2c_eeprom); + } +*/ + acpigen_write_resourcetemplate_footer(); + + /* Device Properties */ + acpigen_write_method_serialized("SSDB",0); + acpigen_write_return_byte_buffer((uint8_t *)&config->buf, + MAX_SSDB_BUF); + acpigen_pop_len(); /* Method */ + acpigen_pop_len(); /* Device */ + acpigen_pop_len(); /* Scope */ + +} + +static const char *ovXXXX_acpi_name(struct device *dev) +{ + struct drivers_i2c_ovXXXX_config *config = dev->chip_info; + return config->acpi_name; +} +#endif + +static struct device_operations ovXXXX_ops = { + .read_resources = DEVICE_NOOP, + .set_resources = DEVICE_NOOP, + .enable_resources = DEVICE_NOOP, +#if IS_ENABLED(CONFIG_HAVE_ACPI_TABLES) + .acpi_name = &ovXXXX_acpi_name, + .acpi_fill_ssdt_generator = &ovXXXX_fill_ssdt, +#endif +}; + +static void ovXXXX_enable(struct device *dev) +{ + dev->ops = &ovXXXX_ops; +} + +struct chip_operations drivers_i2c_ovXXXX_ops = { + CHIP_NAME("OV CAMERA") + .enable_dev = &ovXXXX_enable +};