diff options
Diffstat (limited to 'src/soc/nvidia/tegra132/mipi.c')
| -rw-r--r-- | src/soc/nvidia/tegra132/mipi.c | 147 |
1 files changed, 0 insertions, 147 deletions
diff --git a/src/soc/nvidia/tegra132/mipi.c b/src/soc/nvidia/tegra132/mipi.c deleted file mode 100644 index 7a402df594..0000000000 --- a/src/soc/nvidia/tegra132/mipi.c +++ /dev/null @@ -1,147 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright 2014 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 <console/console.h> -#include <arch/io.h> -#include <stdint.h> -#include <lib.h> -#include <stdlib.h> -#include <delay.h> -#include <soc/addressmap.h> -#include <soc/clock.h> -#include <device/device.h> -#include <soc/nvidia/tegra/types.h> -#include <soc/display.h> -#include <soc/mipi_dsi.h> -#include <soc/tegra_dsi.h> -#include "jdi_25x18_display/panel-jdi-lpm102a188a.h" - -static unsigned long dsi_pads[] = { - 0x060, /* DSIA & DSIB pads */ - 0x180, /* DSIC & DSID pads */ -}; - -static struct tegra_mipi mipi_data = { - .regs = (void *)TEGRA_MIPI_CAL_BASE, -}; - -static inline unsigned long tegra_mipi_readl(struct tegra_mipi *mipi, - unsigned long reg) -{ - return read32(mipi->regs + (reg << 2)); -} - -static inline void tegra_mipi_writel(struct tegra_mipi *mipi, - unsigned long value, unsigned long reg) -{ - write32(mipi->regs + (reg << 2), value); -} - -static const struct calibration_regs tegra124_mipi_calibration_regs[] = { - { .data = MIPI_CAL_CONFIG_CSIA, .clk = MIPI_CAL_CONFIG_CSIAB_CLK }, - { .data = MIPI_CAL_CONFIG_CSIB, .clk = MIPI_CAL_CONFIG_CSIAB_CLK }, - { .data = MIPI_CAL_CONFIG_CSIC, .clk = MIPI_CAL_CONFIG_CSICD_CLK }, - { .data = MIPI_CAL_CONFIG_CSID, .clk = MIPI_CAL_CONFIG_CSICD_CLK }, - { .data = MIPI_CAL_CONFIG_CSIE, .clk = MIPI_CAL_CONFIG_CSIE_CLK }, - { .data = MIPI_CAL_CONFIG_DSIA, .clk = MIPI_CAL_CONFIG_DSIAB_CLK }, - { .data = MIPI_CAL_CONFIG_DSIB, .clk = MIPI_CAL_CONFIG_DSIAB_CLK }, -}; -static const struct tegra_mipi_config tegra124_mipi_config = { - .calibrate_clk_lane = 1, - .regs = tegra124_mipi_calibration_regs, - .num_pads = ARRAY_SIZE(tegra124_mipi_calibration_regs), -}; - -struct tegra_mipi_device *tegra_mipi_request(struct tegra_mipi_device *device, - int device_index) -{ - device->mipi = &mipi_data; - device->config = &tegra124_mipi_config; - device->pads = dsi_pads[device_index]; - - return device; -} - -static int tegra_mipi_wait(struct tegra_mipi *mipi) -{ - u32 poll_interval_us = 1000; - u32 timeout_us = 250 * 1000; - unsigned long value; - - do { - value = tegra_mipi_readl(mipi, MIPI_CAL_STATUS); - if ((value & MIPI_CAL_STATUS_ACTIVE) == 0 && - (value & MIPI_CAL_STATUS_DONE) != 0) - return 0; - - if (timeout_us > poll_interval_us) - timeout_us -= poll_interval_us; - else - break; - - udelay(poll_interval_us); - } while (1); - - printk(BIOS_ERR, "%s: ERROR: timeout\n", __func__); - return -ETIMEDOUT; -} - -int tegra_mipi_calibrate(struct tegra_mipi_device *device) -{ - const struct tegra_mipi_config *cfg = device->config; - unsigned long value, clk_value; - unsigned int i; - int err; - - value = tegra_mipi_readl(device->mipi, MIPI_CAL_BIAS_PAD_CFG0); - value &= ~MIPI_CAL_BIAS_PAD_PDVCLAMP; - value |= MIPI_CAL_BIAS_PAD_E_VCLAMP_REF; - tegra_mipi_writel(device->mipi, value, MIPI_CAL_BIAS_PAD_CFG0); - - tegra_mipi_writel(device->mipi, MIPI_CAL_BIAS_PAD_CFG1_DEFAULT, - MIPI_CAL_BIAS_PAD_CFG1); - - value = tegra_mipi_readl(device->mipi, MIPI_CAL_BIAS_PAD_CFG2); - value &= ~MIPI_CAL_BIAS_PAD_PDVREG; - tegra_mipi_writel(device->mipi, value, MIPI_CAL_BIAS_PAD_CFG2); - - for (i = 0; i < cfg->num_pads; i++) { - if (device->pads & BIT(i)) { - value = MIPI_CAL_CONFIG_SELECT | - MIPI_CAL_CONFIG_HSPDOS(0) | - MIPI_CAL_CONFIG_HSPUOS(4) | - MIPI_CAL_CONFIG_TERMOS(5); - clk_value = MIPI_CAL_CONFIG_SELECT | - MIPI_CAL_CONFIG_HSCLKPDOSD(0) | - MIPI_CAL_CONFIG_HSCLKPUOSD(4); - } else { - value = 0; - clk_value = 0; - } - - tegra_mipi_writel(device->mipi, value, cfg->regs[i].data); - - if (cfg->calibrate_clk_lane) - tegra_mipi_writel(device->mipi, clk_value, - cfg->regs[i].clk); - } - - value = tegra_mipi_readl(device->mipi, MIPI_CAL_CTRL); - value |= MIPI_CAL_CTRL_START; - tegra_mipi_writel(device->mipi, value, MIPI_CAL_CTRL); - - err = tegra_mipi_wait(device->mipi); - - return err; -} |