Patrick Rudolph (siro@das-labor.org) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/12896
-gerrit
commit d2ca7c79436675938832868f2d4dfe7183fda15b Author: Patrick Rudolph siro@das-labor.org Date: Sat Dec 26 08:35:08 2015 +0100
lenovo: add hybrid graphics driver
Add a universal hybrid graphics driver compatible with all supported lenovo devices. Hybrid graphics allows to connect the display panel to either of one GPUs. As there are only two GPUs one GPIO needs to be toggled. In case the discrete GPU is activated the panel is routed to it. On deactivation the panel is routed to the integrated GPU and the discrete HDMI audio device is disabled too. The northbridge code won't disable the PEG port if the HDMI audio device is still visible.
Tested on Lenovo T530 using Nvidia NVS 5400m.
Depends on commit: "intel/southbridge: move gpio.c"
Change-Id: I9b80b31a7749bdf893ed3b772a6505c9f29a56d1 Signed-off-by: Patrick Rudolph siro@das-labor.org --- src/drivers/lenovo/Kconfig | 12 +++ src/drivers/lenovo/Makefile.inc | 1 + src/drivers/lenovo/hybrid_graphics.c | 140 +++++++++++++++++++++++++++++++++++ src/mainboard/lenovo/t400/Kconfig | 1 + src/mainboard/lenovo/t420s/Kconfig | 1 + src/mainboard/lenovo/t430s/Kconfig | 1 + src/mainboard/lenovo/t520/Kconfig | 1 + src/mainboard/lenovo/t530/Kconfig | 1 + 8 files changed, 158 insertions(+)
diff --git a/src/drivers/lenovo/Kconfig b/src/drivers/lenovo/Kconfig index f20f3b2..651ec80 100644 --- a/src/drivers/lenovo/Kconfig +++ b/src/drivers/lenovo/Kconfig @@ -27,3 +27,15 @@ config DIGITIZER_ABSENT endchoice
endif + +config DRIVERS_LENOVO_HYBRID_GRAPHICS + bool + default n + +if DRIVERS_LENOVO_HYBRID_GRAPHICS + +config HYBRID_GRAPHICS_GPIO_NUM + int + default 52 + +endif diff --git a/src/drivers/lenovo/Makefile.inc b/src/drivers/lenovo/Makefile.inc index c50db5b..66f8594 100644 --- a/src/drivers/lenovo/Makefile.inc +++ b/src/drivers/lenovo/Makefile.inc @@ -1 +1,2 @@ ramstage-$(CONFIG_DRIVERS_LENOVO_WACOM) += wacom.c +ramstage-$(CONFIG_DRIVERS_LENOVO_HYBRID_GRAPHICS) += hybrid_graphics.c diff --git a/src/drivers/lenovo/hybrid_graphics.c b/src/drivers/lenovo/hybrid_graphics.c new file mode 100644 index 0000000..ada09df --- /dev/null +++ b/src/drivers/lenovo/hybrid_graphics.c @@ -0,0 +1,140 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2015 Patrick Rudolph + * + * 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 <types.h> +#include <string.h> +#include <device/device.h> +#include <device/pci_def.h> +#include <device/pci_ops.h> +#include <device/pci.h> +#include <console/console.h> +#include <southbridge/intel/common/gpio.h> + +#define VENDOR_ID_NVIDIA 0x10de +#define VENDOR_ID_AMD 0x1002 + +/* Hybrid graphics allows to connect LVDS interface to either iGPU + * or dGPU depending on GPIO level. + * On systems without dGPU this code is either not linked in or is never called + * and has no effect. + * + * Note: Once native gfx init is done for AMD or Nvida graphic + * cards merge this code. + */ + +static struct device *get_audio_dev(struct device *dev) +{ + /* returns the GPU HDMI audio device */ + if (dev->vendor == VENDOR_ID_NVIDIA) { + switch (dev->device) { + case 0x0def: + return dev_find_device(dev->vendor, 0x0bea, dev->bus->dev); + case 0x0dfc: + return dev_find_device(dev->vendor, 0x0bea, dev->bus->dev); + case 0x1056: + return dev_find_device(dev->vendor, 0x0e08, dev->bus->dev); + case 0x1057: + return dev_find_device(dev->vendor, 0x0bea, dev->bus->dev); + case 0x0a6c: + return dev_find_device(dev->vendor, 0x0be3, dev->bus->dev); + default: + break; + } + } else { + switch (dev->device) { + case 0x9591: + return dev_find_device(dev->vendor, 0xaa20, dev->bus->dev); + case 0x95c4: + return dev_find_device(dev->vendor, 0xaa28, dev->bus->dev); + default: + break; + } + } + return NULL; +} + +static void hybrid_graphics_enable_peg(struct device *dev) +{ + struct device *audio_dev; + + /* connect LVDS interface to dGPU */ + set_gpio(CONFIG_HYBRID_GRAPHICS_GPIO_NUM, GPIO_LEVEL_LOW); + printk(BIOS_DEBUG, "Switching panel to discrete GPU\n"); + dev->enabled = 1; + + audio_dev = get_audio_dev(dev); + if (audio_dev) + audio_dev->enabled = 1; +} + +static void hybrid_graphics_disable_peg(struct device *dev) +{ + struct device *audio_dev; + + /* connect LVDS interface to iGPU */ + set_gpio(CONFIG_HYBRID_GRAPHICS_GPIO_NUM, GPIO_LEVEL_HIGH); + printk(BIOS_DEBUG, "Switching panel to integrated GPU\n"); + printk(BIOS_DEBUG, "Disabling device 0x%04x:0x%04x on bus %s\n", + dev->vendor, dev->device, bus_path(dev->bus)); + dev->enabled = 0; + + audio_dev = get_audio_dev(dev); + if (audio_dev) { + printk(BIOS_DEBUG, "Disabling device 0x%04x:0x%04x on bus %s\n", + audio_dev->vendor, audio_dev->device, bus_path(audio_dev->bus)); + audio_dev->enabled = 0; + } +} + +static struct pci_operations pci_dev_ops_pci = { + .set_subsystem = pci_dev_set_subsystem, +}; + +struct device_operations hybrid_graphics_ops = { + .read_resources = pci_dev_read_resources, + .set_resources = pci_dev_set_resources, + .enable_resources = pci_dev_enable_resources, + .init = pci_dev_init, + .scan_bus = 0, + .enable = hybrid_graphics_enable_peg, + .disable = hybrid_graphics_disable_peg, + .ops_pci = &pci_dev_ops_pci, +}; + +static const unsigned short pci_device_ids_nvidia[] = { + 0x0def, /* NVidia NVS 5400m Lenovo T430/T530 */ + 0x0dfc, /* NVidia NVS 5200m Lenovo T430s */ + 0x1056, /* NVidia NVS 4200m Lenovo T420/T520 */ + 0x1057, /* NVidia NVS 4200m Lenovo T420/T520 */ + 0x0a6c, /* NVidia NVS 3100m Lenovo T410/T510 */ + 0 }; + +static const struct pci_driver hybrid_peg_nvidia __pci_driver = { + .ops = &hybrid_graphics_ops, + .vendor = VENDOR_ID_NVIDIA, + .devices = pci_device_ids_nvidia, +}; + +static const unsigned short pci_device_ids_amd[] = { + 0x9591, /* ATI Mobility Radeon HD 3650 Lenovo T500/W500 */ + 0x95c4, /* ATI Mobility Radeon HD 3470 Lenovo T400/R400 */ + 0 }; + +static const struct pci_driver hybrid_peg_amd __pci_driver = { + .ops = &hybrid_graphics_ops, + .vendor = VENDOR_ID_AMD, + .devices = pci_device_ids_amd, +}; + diff --git a/src/mainboard/lenovo/t400/Kconfig b/src/mainboard/lenovo/t400/Kconfig index 0eac311..59938bd 100644 --- a/src/mainboard/lenovo/t400/Kconfig +++ b/src/mainboard/lenovo/t400/Kconfig @@ -22,6 +22,7 @@ config BOARD_SPECIFIC_OPTIONS # dummy select MAINBOARD_HAS_NATIVE_VGA_INIT_TEXTMODECFG select INTEL_INT15 select SUPERIO_NSC_PC87382 + select DRIVERS_LENOVO_HYBRID_GRAPHICS
config MAINBOARD_DIR string diff --git a/src/mainboard/lenovo/t420s/Kconfig b/src/mainboard/lenovo/t420s/Kconfig index 65d37a7..d511a2b 100644 --- a/src/mainboard/lenovo/t420s/Kconfig +++ b/src/mainboard/lenovo/t420s/Kconfig @@ -21,6 +21,7 @@ config BOARD_SPECIFIC_OPTIONS # dummy select MAINBOARD_HAS_NATIVE_VGA_INIT_TEXTMODECFG select SANDYBRIDGE_LVDS select MAINBOARD_HAS_LPC_TPM + select DRIVERS_LENOVO_HYBRID_GRAPHICS
# Workaround for EC/KBC IRQ1. select SERIRQ_CONTINUOUS_MODE diff --git a/src/mainboard/lenovo/t430s/Kconfig b/src/mainboard/lenovo/t430s/Kconfig index 6e257dd..2ca71a4 100644 --- a/src/mainboard/lenovo/t430s/Kconfig +++ b/src/mainboard/lenovo/t430s/Kconfig @@ -22,6 +22,7 @@ config BOARD_SPECIFIC_OPTIONS # dummy select IVYBRIDGE_LVDS select ENABLE_VMX select MAINBOARD_HAS_LPC_TPM + select DRIVERS_LENOVO_HYBRID_GRAPHICS
# Workaround for EC/KBC IRQ1. select SERIRQ_CONTINUOUS_MODE diff --git a/src/mainboard/lenovo/t520/Kconfig b/src/mainboard/lenovo/t520/Kconfig index df7c2db..4a7a6c2 100644 --- a/src/mainboard/lenovo/t520/Kconfig +++ b/src/mainboard/lenovo/t520/Kconfig @@ -21,6 +21,7 @@ config BOARD_SPECIFIC_OPTIONS # dummy select MAINBOARD_HAS_NATIVE_VGA_INIT_TEXTMODECFG select SANDYBRIDGE_LVDS select MAINBOARD_HAS_LPC_TPM + select DRIVERS_LENOVO_HYBRID_GRAPHICS
# Workaround for EC/KBC IRQ1. select SERIRQ_CONTINUOUS_MODE diff --git a/src/mainboard/lenovo/t530/Kconfig b/src/mainboard/lenovo/t530/Kconfig index 7b4ca7a..d947466 100644 --- a/src/mainboard/lenovo/t530/Kconfig +++ b/src/mainboard/lenovo/t530/Kconfig @@ -23,6 +23,7 @@ config BOARD_SPECIFIC_OPTIONS # dummy select MAINBOARD_DO_NATIVE_VGA_INIT # default to native vga init select ENABLE_VMX select MAINBOARD_HAS_LPC_TPM + select DRIVERS_LENOVO_HYBRID_GRAPHICS
# Workaround for EC/KBC IRQ1. select SERIRQ_CONTINUOUS_MODE