diff options
author | Uwe Poeche <uwe.poeche@siemens.com> | 2019-11-05 15:44:42 +0100 |
---|---|---|
committer | Patrick Georgi <pgeorgi@google.com> | 2019-11-12 18:24:31 +0000 |
commit | 996588521a2240397b4a89e5ad5f5708f930dbc8 (patch) | |
tree | e2b3814dbcff2b46d751672f48f879b8b787d46d /src/mainboard/siemens/mc_apl1/variants/mc_apl4 | |
parent | 11a34ec4c230ab9a6a825eae57eb848aa052a6ed (diff) | |
download | coreboot-996588521a2240397b4a89e5ad5f5708f930dbc8.tar.xz |
src/mainboard/siemens: Use PTN3460 chip driver
This patch replaces and cleans up the redundant PTN3460 driver files in
/mainboard/siemens directories by using the now available driver in
src/drivers/i2c/ptn3460 and providing mainboard specific functions to
the driver.
TEST=Display is working on Siemens mainboards (e.g. mc_tcu3, mc_apl1, ...).
Change-Id: I976a502e7176a356bab772758250db3cdff529b9
Signed-off-by: Uwe Poeche <uwe.poeche@siemens.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/36643
Reviewed-by: Werner Zeh <werner.zeh@siemens.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/mainboard/siemens/mc_apl1/variants/mc_apl4')
7 files changed, 111 insertions, 301 deletions
diff --git a/src/mainboard/siemens/mc_apl1/variants/mc_apl4/Kconfig b/src/mainboard/siemens/mc_apl1/variants/mc_apl4/Kconfig index 31317b9280..b10bdc846b 100644 --- a/src/mainboard/siemens/mc_apl1/variants/mc_apl4/Kconfig +++ b/src/mainboard/siemens/mc_apl1/variants/mc_apl4/Kconfig @@ -8,6 +8,7 @@ config BOARD_SPECIFIC_OPTIONS select MAINBOARD_HAS_TPM2 select MAINBOARD_HAS_LPC_TPM select TPM_ON_FAST_SPI + select DRIVERS_I2C_PTN3460 config UART_FOR_CONSOLE default 1 diff --git a/src/mainboard/siemens/mc_apl1/variants/mc_apl4/Makefile.inc b/src/mainboard/siemens/mc_apl1/variants/mc_apl4/Makefile.inc index 482abf83dc..b1e6a0f74f 100644 --- a/src/mainboard/siemens/mc_apl1/variants/mc_apl4/Makefile.inc +++ b/src/mainboard/siemens/mc_apl1/variants/mc_apl4/Makefile.inc @@ -2,5 +2,4 @@ romstage-y += memory.c romstage-y += gpio.c ramstage-y += gpio.c -ramstage-y += mainboard.c -ramstage-y += ptn3460.c +ramstage-y += lcd_panel.c diff --git a/src/mainboard/siemens/mc_apl1/variants/mc_apl4/devicetree.cb b/src/mainboard/siemens/mc_apl1/variants/mc_apl4/devicetree.cb index fc9885ce7f..4074bae3bc 100644 --- a/src/mainboard/siemens/mc_apl1/variants/mc_apl4/devicetree.cb +++ b/src/mainboard/siemens/mc_apl1/variants/mc_apl4/devicetree.cb @@ -75,7 +75,12 @@ chip soc/intel/apollolake device pci 17.0 on end # - I2C 4 device pci 17.1 on end # - I2C 5 device pci 17.2 on end # - I2C 6 - device pci 17.3 on end # - I2C 7 + device pci 17.3 on # - I2C 7 + # Enable external display bridge (eDP to LVDS) + chip drivers/i2c/ptn3460 + device i2c 0x60 on end # PTN3460 DP2LVDS Bridge + end + end device pci 18.0 on end # - UART 0 device pci 18.1 on end # - UART 1 device pci 18.2 on end # - UART 2 diff --git a/src/mainboard/siemens/mc_apl1/variants/mc_apl4/include/variant/ptn3460.h b/src/mainboard/siemens/mc_apl1/variants/mc_apl4/include/variant/ptn3460.h deleted file mode 100644 index 2a52bf5e02..0000000000 --- a/src/mainboard/siemens/mc_apl1/variants/mc_apl4/include/variant/ptn3460.h +++ /dev/null @@ -1,91 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright (C) 2014-2018 Siemens AG - * - * 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. - */ - -#ifndef PTN3460_H_ -#define PTN3460_H_ - -#include <stdint.h> - -#define PTN_SLAVE_ADR 0x60 -#define PTN_I2C_CONTROLLER 7 - -#define PTN_EDID_OFF 0x00 -#define PTN_EDID_LEN 0x80 -#define PTN_CONFIG_OFF 0x80 -#define PTN_FLASH_CFG_OFF 0xE8 -#define PTN_FLASH_CFG_LEN 0x04 -#define PTN_MAX_EDID_NUM 6 - -/* Define some error codes that can be used. */ -#define PTN_NO_ERROR 0x00000000 -#define PTN_BUS_ERROR 0x10000000 -#define PTN_INVALID_EDID 0x20000000 - -struct ptn_3460_config { - /* DisplayPort interface control. */ - uint8_t dp_interface_ctrl; - /* LVDS interface control register 1. */ - uint8_t lvds_interface_ctrl1; - /* LVDS interface control register 2. */ - uint8_t lvds_interface_ctrl2; - /* LVDS interface control register 3. */ - uint8_t lvds_interface_ctrl3; - /* Select which EDID-block is emulated. */ - uint8_t edid_rom_emulation; - /* Select which EDID block to map to 0..0x7F. */ - uint8_t edid_rom_access_ctrl; - /* Smallest PWM frequency for back light. */ - uint8_t pwm_min[3]; - /* Biggest PWM frequency for back light. */ - uint8_t pwm_max[3]; - /* Fast link training control register. */ - uint8_t fast_link_ctrl; - /* Pin configuration control register 1. */ - uint8_t pin_cfg_ctrl1; - /* Pin configuration control register 2. */ - uint8_t pin_cfg_ctrl2; - /* Default PWM bit count in DPCD register. */ - uint8_t pwm_default; - /* Current PWM bit count in DPCD register. */ - uint16_t pwm_value; - /* Default PWM frequency in DPCD register. */ - uint8_t pwm_default_freq; - /* Panel T3 timing value. */ - uint8_t t3_timing; - /* Panel T12 timing value. */ - uint8_t t12_timing; - /* Back light control register. */ - uint8_t backlight_ctrl; - /* Panel T2 delay. */ - uint8_t t2_delay; - /* Panel T4 timing value. */ - uint8_t t4_timing; - /* Panel T5 delay. */ - uint8_t t5_delay; -} __packed; - -struct ptn_3460_flash { - /* Flash command (erase or erase and flash). */ - uint8_t cmd; - /* Magic number needed by the flash algorithm. */ - uint16_t magic; - /* Trigger for starting flash operation. */ - uint8_t trigger; -} __packed; - -int ptn3460_init(const char *hwi_block); -int ptn3460_write_edid(uint8_t edid_num, const uint8_t data[PTN_EDID_LEN]); -int ptn_select_edid(uint8_t edid_num); -#endif /* PTN3460_H_ */ diff --git a/src/mainboard/siemens/mc_apl1/variants/mc_apl4/lcd_panel.c b/src/mainboard/siemens/mc_apl1/variants/mc_apl4/lcd_panel.c new file mode 100644 index 0000000000..abfcfe37a8 --- /dev/null +++ b/src/mainboard/siemens/mc_apl1/variants/mc_apl4/lcd_panel.c @@ -0,0 +1,103 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2014-2019 Siemens AG + * + * 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 <console/console.h> +#include <device/device.h> +#include <drivers/i2c/ptn3460/ptn3460.h> +#include <hwilib.h> +#include <types.h> + +/** \brief This function provides EDID data to the driver for DP2LVDS Bridge (PTN3460) + * @param edid_data pointer to EDID data in driver +*/ +enum cb_err mb_get_edid(uint8_t edid_data[0x80]) +{ + const char *hwi_block = "hwinfo.hex"; + + if (hwilib_find_blocks(hwi_block) != CB_SUCCESS) { + printk(BIOS_ERR, "LCD: Info block \"%s\" not found!\n", hwi_block); + return CB_ERR; + } + + /* Get EDID data from hwinfo block */ + if (hwilib_get_field(Edid, edid_data, PTN_EDID_LEN) != PTN_EDID_LEN) { + printk(BIOS_ERR, "LCD: No EDID data available in %s\n", hwi_block); + return CB_ERR; + } + return CB_SUCCESS; +} + +/** \brief This function provides EDID block [0..6] to the driver for DP2LVDS Bridge (PTN3460) + * which has to be used. +*/ +uint8_t mb_select_edid_table(void) +{ + return 6; /* With this mainboard we use EDID block 6 for emulation in PTN3460. */ +} + +/** \brief Function to enable mainboard to adjust the config data of PTN3460. + * @param *cfg_ptr Pointer to the PTN config structure to modify. + * @return -1 on error; PTN_CFG_MODIFIED if data was modified and needs to be updated. +*/ +int mb_adjust_cfg(struct ptn_3460_config *cfg) +{ + const char *hwi_block = "hwinfo.hex"; + uint8_t disp_con = 0, color_depth = 0; + + if (hwilib_find_blocks(hwi_block) != CB_SUCCESS) { + printk(BIOS_ERR, "LCD: Info block \"%s\" not found!\n", hwi_block); + return -1; + } + + if (hwilib_get_field(PF_DisplCon, &disp_con, sizeof(disp_con)) != sizeof(disp_con)) { + printk(BIOS_ERR, "LCD: Missing panel features from %s\n", hwi_block); + return -1; + } + if (hwilib_get_field(PF_Color_Depth, &color_depth, + sizeof(color_depth)) != sizeof(color_depth)) { + printk(BIOS_ERR, "LCD: Missing panel features from %s\n", hwi_block); + return -1; + } + /* Set up configuration data according to the hwinfo block we got. */ + cfg->dp_interface_ctrl = 0x00; + /* Use odd-bus for clock distribution only. */ + cfg->lvds_interface_ctrl1 = 0x01; + if (disp_con == PF_DISPLCON_LVDS_DUAL) { + /* Turn on dual LVDS lane and clock. */ + cfg->lvds_interface_ctrl1 |= 0x0b; + } + if (color_depth == PF_COLOR_DEPTH_6BIT) { + /* Use 18 bits per pixel. */ + cfg->lvds_interface_ctrl1 |= 0x20; + } + /* No clock spreading, 300 mV LVDS swing. */ + cfg->lvds_interface_ctrl2 = 0x03; + /* Swap LVDS lanes (N vs. P). */ + cfg->lvds_interface_ctrl3 = 0x04; + /* Delay T2 (VDD to LVDS active) by 16 ms. */ + cfg->t2_delay = 1; + /* 500 ms from LVDS to backlight active. */ + cfg->t3_timing = 10; + /* 1 second re-power delay. */ + cfg->t12_timing = 20; + /* 150 ms backlight off to LVDS inactive. */ + cfg->t4_timing = 3; + /* Delay T5 (LVDS to VDD inactive) by 16 ms. */ + cfg->t5_delay = 1; + /* Enable backlight control. */ + cfg->backlight_ctrl = 0; + + return PTN_CFG_MODIFIED; +} diff --git a/src/mainboard/siemens/mc_apl1/variants/mc_apl4/mainboard.c b/src/mainboard/siemens/mc_apl1/variants/mc_apl4/mainboard.c deleted file mode 100644 index 65e78bb378..0000000000 --- a/src/mainboard/siemens/mc_apl1/variants/mc_apl4/mainboard.c +++ /dev/null @@ -1,35 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright (C) 2018 Siemens AG - * - * 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 <bootstate.h> -#include <console/console.h> -#include <hwilib.h> -#include <baseboard/variants.h> -#include <variant/ptn3460.h> - -void variant_mainboard_final(void) -{ - int status; - - /* - * Set up the DP2LVDS converter. - * ptn3460_init() may only be executed after i2c bus init. - */ - status = ptn3460_init("hwinfo.hex"); - if (status) - printk(BIOS_ERR, "LCD: Set up PTN with status 0x%x\n", status); - else - printk(BIOS_INFO, "LCD: Set up PTN was successful.\n"); -} diff --git a/src/mainboard/siemens/mc_apl1/variants/mc_apl4/ptn3460.c b/src/mainboard/siemens/mc_apl1/variants/mc_apl4/ptn3460.c deleted file mode 100644 index 47763ae5d8..0000000000 --- a/src/mainboard/siemens/mc_apl1/variants/mc_apl4/ptn3460.c +++ /dev/null @@ -1,172 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright (C) 2014-2018 Siemens AG - * - * 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 <console/console.h> -#include <hwilib.h> -#include <device/i2c_simple.h> -#include <types.h> -#include <variant/ptn3460.h> - -/* - * This function sets up the DP2LVDS-converter to be used with the appropriate - * lcd panel. - * - * @param *hwi_block Filename in CBFS of the block to use as HW-Info. - * @return 0 on success or HWI-Data/PTN error code. - */ -int ptn3460_init(const char *hwi_block) -{ - struct ptn_3460_config cfg; - int status; - uint8_t disp_con = 0, color_depth = 0; - uint8_t edid_data[PTN_EDID_LEN]; - int i; - - if (!hwi_block || hwilib_find_blocks(hwi_block) != CB_SUCCESS) { - printk(BIOS_ERR, "LCD: Info block \"%s\" not found!\n", - hwi_block); - return 1; - } - /* Get all needed information from hwinfo block. */ - if (hwilib_get_field(Edid, edid_data, sizeof(edid_data)) != - sizeof(edid_data)) { - printk(BIOS_ERR, "LCD: No EDID data available in %s\n", - hwi_block); - return 1; - } - if ((hwilib_get_field(PF_DisplCon, &disp_con, sizeof(disp_con)) != - sizeof(disp_con))) { - printk(BIOS_ERR, "LCD: Missing panel features from %s\n", - hwi_block); - return 1; - } - if (hwilib_get_field(PF_Color_Depth, &color_depth, sizeof(color_depth)) - != sizeof(color_depth)) { - printk(BIOS_ERR, "LCD: Missing panel features from %s\n", - hwi_block); - return 1; - } - /* - * Here, all the desired information for setting up DP2LVDS converter - * is present. Inside the converter, table 6 will be used for the - * timings. - */ - status = ptn3460_write_edid(6, edid_data); - if (status) - return status; - /* Select this table to be emulated. */ - ptn_select_edid(6); - /* Read PTN configuration data. */ - status = i2c_read_bytes(PTN_I2C_CONTROLLER, PTN_SLAVE_ADR, - PTN_CONFIG_OFF, (uint8_t *)&cfg, - sizeof(cfg)); - if (status) - return (PTN_BUS_ERROR | status); - /* Set up configuration data according to the hwinfo block we get. */ - cfg.dp_interface_ctrl = 0; - /* Use odd-bus for clock distribution only. */ - cfg.lvds_interface_ctrl1 = 0x01; - if (disp_con == PF_DISPLCON_LVDS_DUAL) - /* Turn on dual LVDS lane and clock. */ - cfg.lvds_interface_ctrl1 |= 0x0b; - if (color_depth == PF_COLOR_DEPTH_6BIT) - /* Use 18 bits per pixel. */ - cfg.lvds_interface_ctrl1 |= 0x20; - - /* No clock spreading, 300 mV LVDS swing. */ - cfg.lvds_interface_ctrl2 = 0x03; - /* Swap LVDS signal (N vs. P). */ - cfg.lvds_interface_ctrl3 = 0x04; - /* Delay T2 (VDD to LVDS active) by 16 ms. */ - cfg.t2_delay = 1; - /* 250 ms from LVDS to backlight active. */ - cfg.t3_timing = 10; - /* 1 second re-power delay. */ - cfg.t12_timing = 20; - /* 150 ms backlight off to LVDS inactive. */ - cfg.t4_timing = 3; - /* Delay T5 (LVDS to VDD inactive) by 16 ms. */ - cfg.t5_delay = 1; - /* Enable backlight control. */ - cfg.backlight_ctrl = 0; - - /* Write back configuration data to PTN3460. */ - for (i = 0; i < sizeof(struct ptn_3460_config); i++) { - status = i2c_writeb(PTN_I2C_CONTROLLER, PTN_SLAVE_ADR, - PTN_CONFIG_OFF+i, - *(((uint8_t *)&cfg)+i)); - if (status) - return (PTN_BUS_ERROR | status); - } - - return PTN_NO_ERROR; -} - -/* - * This function writes one Extended Display Identification Data (EDID) - * structure to PTN3460. - * - * @param edid_num Number of EDID that must be written (0..6). - * @param *data Pointer to a buffer where data to write is stored in. - * @return 0 on success or error code. - */ -int ptn3460_write_edid(uint8_t edid_num, const uint8_t data[PTN_EDID_LEN]) -{ - int status; - int i; - - if (edid_num > PTN_MAX_EDID_NUM) - return PTN_INVALID_EDID; - - /* First enable access to the desired EDID table. */ - status = i2c_writeb(PTN_I2C_CONTROLLER, PTN_SLAVE_ADR, - PTN_CONFIG_OFF + 5, edid_num); - if (status) - return (PTN_BUS_ERROR | status); - - /* Now we can simply write EDID-data to ptn3460. */ - for (i = 0; i < PTN_EDID_LEN; i++) { - status = i2c_writeb(PTN_I2C_CONTROLLER, PTN_SLAVE_ADR, - PTN_EDID_OFF + i, data[i]); - if (status) - return (PTN_BUS_ERROR | status); - } - - return PTN_NO_ERROR; -} - -/* - * This function selects one of 7 EDID-tables inside PTN3460 which should be - * emulated on DisplayPort and turn emulation ON. - * - * @param edid_num Number of EDID to emulate (0..6). - * @return 0 on success or error code. - */ -int ptn_select_edid(uint8_t edid_num) -{ - int status; - uint8_t val; - - if (edid_num > PTN_MAX_EDID_NUM) - return PTN_INVALID_EDID; - /* Enable emulation of the desired EDID table. */ - val = (edid_num << 1) | 1; - status = i2c_writeb(PTN_I2C_CONTROLLER, PTN_SLAVE_ADR, - PTN_CONFIG_OFF + 4, val); - if (status) - return (PTN_BUS_ERROR | status); - else - return PTN_NO_ERROR; -} |