diff options
Diffstat (limited to 'src/drivers')
| -rw-r--r-- | src/drivers/intel/gma/Kconfig | 6 | ||||
| -rw-r--r-- | src/drivers/intel/gma/Makefile.inc | 1 | ||||
| -rw-r--r-- | src/drivers/intel/gma/intel_ddi.c | 107 |
3 files changed, 114 insertions, 0 deletions
diff --git a/src/drivers/intel/gma/Kconfig b/src/drivers/intel/gma/Kconfig index 1a4212bd49..073f70819b 100644 --- a/src/drivers/intel/gma/Kconfig +++ b/src/drivers/intel/gma/Kconfig @@ -22,3 +22,9 @@ config INTEL_DP default n help helper functions for intel display port operations + +config INTEL_DDI + bool + default n + help + helper functions for intel DDI operations diff --git a/src/drivers/intel/gma/Makefile.inc b/src/drivers/intel/gma/Makefile.inc index c90daa4f37..0c3f45a17e 100644 --- a/src/drivers/intel/gma/Makefile.inc +++ b/src/drivers/intel/gma/Makefile.inc @@ -18,4 +18,5 @@ ## ramstage-$(CONFIG_INTEL_DP) += intel_dp.c drm_dp_helper.c +ramstage-$(CONFIG_INTEL_DDI) += intel_ddi.c diff --git a/src/drivers/intel/gma/intel_ddi.c b/src/drivers/intel/gma/intel_ddi.c new file mode 100644 index 0000000000..659d73ca04 --- /dev/null +++ b/src/drivers/intel/gma/intel_ddi.c @@ -0,0 +1,107 @@ +/* + * Copyright 2013 Google Inc. + * Copyright © 2012 Intel Corporation + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS + * IN THE SOFTWARE. + * + * Authors: + * Eugeni Dodonov <eugeni.dodonov@intel.com> + * + */ +#include <types.h> +#include <string.h> +#include <stdlib.h> +#include <device/device.h> +#include <device/device.h> +#include <device/pci_def.h> +#include <device/pci_ops.h> +#include <console/console.h> +#include <delay.h> +#include <pc80/mc146818rtc.h> +#include <arch/acpi.h> +#include <arch/io.h> +#include <arch/interrupt.h> +#include <boot/coreboot_tables.h> +#include <smbios.h> +#include <device/pci.h> +#include <ec/google/chromeec/ec.h> +#include <cbfs_core.h> + +#include <cpu/x86/tsc.h> +#include <cpu/x86/cache.h> +#include <cpu/x86/mtrr.h> +#include <cpu/x86/msr.h> +#include <edid.h> +#include <drivers/intel/gma/i915.h> + +/* HDMI/DVI modes ignore everything but the last 2 items. So we share + * them for both DP and FDI transports, allowing those ports to + * automatically adapt to HDMI connections as well. + */ +static u32 hsw_ddi_translations_dp[] = { + 0x00FFFFFF, 0x0006000E, /* DP parameters */ + 0x00D75FFF, 0x0005000A, + 0x00C30FFF, 0x00040006, + 0x80AAAFFF, 0x000B0000, + 0x00FFFFFF, 0x0005000A, + 0x00D75FFF, 0x000C0004, + 0x80C30FFF, 0x000B0000, + 0x00FFFFFF, 0x00040006, + 0x80D75FFF, 0x000B0000, + 0x00FFFFFF, 0x00040006 /* HDMI parameters */ +}; + +static u32 hsw_ddi_translations_fdi[] = { + 0x00FFFFFF, 0x0007000E, /* FDI parameters */ + 0x00D75FFF, 0x000F000A, + 0x00C30FFF, 0x00060006, + 0x00AAAFFF, 0x001E0000, + 0x00FFFFFF, 0x000F000A, + 0x00D75FFF, 0x00160004, + 0x00C30FFF, 0x001E0000, + 0x00FFFFFF, 0x00060006, + 0x00D75FFF, 0x001E0000, + 0x00FFFFFF, 0x00040006 /* HDMI parameters */ +}; + +/* On Haswell, DDI port buffers must be programmed with correct values + * in advance. The buffer values are different for FDI and DP modes, + * but the HDMI/DVI fields are shared among those. So we program the DDI + * in either FDI or DP modes only, as HDMI connections will work with both + * of those. + */ +void intel_prepare_ddi_buffers(int port, int use_fdi_mode) +{ + u32 reg; + int i; + u32 *ddi_translations = ((use_fdi_mode) ? + hsw_ddi_translations_fdi : + hsw_ddi_translations_dp); + + printk(BIOS_SPEW, "Initializing DDI buffers for port %d in %s mode\n", + port, + use_fdi_mode ? "FDI" : "DP"); + + for (i=0,reg=DDI_BUF_TRANS(port);i < ARRAY_SIZE(hsw_ddi_translations_fdi);i++) { + io_i915_write32(ddi_translations[i], reg); + reg += 4; + } +} + |