Jeremy Compostella | 47f154c | 2022-12-01 15:55:06 -0700 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| 2 | |
| 3 | #include <device/pci.h> |
| 4 | #include <drivers/intel/gma/libgfxinit.h> |
| 5 | #include <intelblocks/early_graphics.h> |
Tarun Tuli | 33c6665 | 2023-05-04 12:41:13 +0000 | [diff] [blame] | 6 | #include <soc/gpio.h> |
Jeremy Compostella | 47f154c | 2022-12-01 15:55:06 -0700 | [diff] [blame] | 7 | #include <soc/pci_devs.h> |
| 8 | |
Jeremy Compostella | 47f154c | 2022-12-01 15:55:06 -0700 | [diff] [blame] | 9 | static void device_init(void) |
| 10 | { |
| 11 | /* Disable response in IO and MMIO space. */ |
| 12 | pci_and_config16(SA_DEV_IGD, PCI_COMMAND, |
| 13 | ~(PCI_COMMAND_IO | PCI_COMMAND_MEMORY)); |
| 14 | |
| 15 | /* Program IGD Base Address Register 0. */ |
| 16 | pci_write_config32(SA_DEV_IGD, PCI_BASE_ADDRESS_0, |
| 17 | CONFIG_GFX_GMA_DEFAULT_MMIO); |
| 18 | |
| 19 | /* Enable response in IO and MMIO space. */ |
| 20 | pci_or_config16(SA_DEV_IGD, PCI_COMMAND, |
| 21 | (PCI_COMMAND_IO | PCI_COMMAND_MEMORY)); |
| 22 | } |
| 23 | |
Tarun Tuli | 33c6665 | 2023-05-04 12:41:13 +0000 | [diff] [blame] | 24 | __weak const struct pad_config *variant_early_graphics_gpio_table(size_t *num) |
| 25 | { |
| 26 | *num = 0; |
| 27 | return NULL; |
| 28 | } |
| 29 | |
Jeremy Compostella | 47f154c | 2022-12-01 15:55:06 -0700 | [diff] [blame] | 30 | bool early_graphics_init(void) |
| 31 | { |
| 32 | int ret; |
Tarun Tuli | 33c6665 | 2023-05-04 12:41:13 +0000 | [diff] [blame] | 33 | const struct pad_config *pads; |
| 34 | size_t pads_num; |
Jeremy Compostella | 47f154c | 2022-12-01 15:55:06 -0700 | [diff] [blame] | 35 | |
| 36 | if (!CONFIG(MAINBOARD_USE_EARLY_LIBGFXINIT)) |
| 37 | return false; |
| 38 | |
| 39 | /* Perform minimal graphic MMIO configuration. */ |
| 40 | device_init(); |
| 41 | |
Tarun Tuli | 33c6665 | 2023-05-04 12:41:13 +0000 | [diff] [blame] | 42 | /* Optionally configure any required display related GPIOs */ |
| 43 | pads = variant_early_graphics_gpio_table(&pads_num); |
| 44 | gpio_configure_pads(pads, pads_num); |
| 45 | |
Jeremy Compostella | 47f154c | 2022-12-01 15:55:06 -0700 | [diff] [blame] | 46 | /* Configure display panel. */ |
| 47 | early_graphics_soc_panel_init(); |
| 48 | |
| 49 | gma_gfxinit(&ret); |
Jeremy Compostella | b628bec | 2023-01-19 18:58:30 -0700 | [diff] [blame] | 50 | return !!ret; |
Jeremy Compostella | 47f154c | 2022-12-01 15:55:06 -0700 | [diff] [blame] | 51 | } |
| 52 | |
| 53 | void early_graphics_stop(void) |
| 54 | { |
Jeremy Compostella | b628bec | 2023-01-19 18:58:30 -0700 | [diff] [blame] | 55 | if (!CONFIG(MAINBOARD_USE_EARLY_LIBGFXINIT)) |
Jeremy Compostella | 47f154c | 2022-12-01 15:55:06 -0700 | [diff] [blame] | 56 | return; |
| 57 | |
Jeremy Compostella | b628bec | 2023-01-19 18:58:30 -0700 | [diff] [blame] | 58 | gma_gfxstop(); |
Jeremy Compostella | 47f154c | 2022-12-01 15:55:06 -0700 | [diff] [blame] | 59 | } |