diff options
| author | Raag Jadav <raag.jadav@intel.com> | 2025-11-12 09:10:10 +0530 |
|---|---|---|
| committer | Bartosz Golaszewski <bartosz.golaszewski@linaro.org> | 2025-11-19 14:08:51 +0100 |
| commit | a0c83150eea5807dbedf786f55cd49b14af118a8 (patch) | |
| tree | 1a7d0dbef5b3a9544c9e0f7d86ce4466c158edfd /include/linux/ehl_pse_io_aux.h | |
| parent | 5ef5f3c2245e13c62adf4cb0980cdd7bd72c59d0 (diff) | |
platform/x86/intel: Introduce Intel Elkhart Lake PSE I/O
Intel Elkhart Lake Programmable Service Engine (PSE) includes two PCI
devices that expose two different capabilities of GPIO and Timed I/O
as a single PCI function through shared MMIO with below layout.
GPIO: 0x0000 - 0x1000
TIO: 0x1000 - 0x2000
This driver enumerates the PCI parent device and creates auxiliary child
devices for these capabilities. The actual functionalities are provided
by their respective auxiliary drivers.
Signed-off-by: Raag Jadav <raag.jadav@intel.com>
Acked-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20251112034040.457801-2-raag.jadav@intel.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Diffstat (limited to 'include/linux/ehl_pse_io_aux.h')
| -rw-r--r-- | include/linux/ehl_pse_io_aux.h | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/include/linux/ehl_pse_io_aux.h b/include/linux/ehl_pse_io_aux.h new file mode 100644 index 000000000000..afb8587ee5fb --- /dev/null +++ b/include/linux/ehl_pse_io_aux.h @@ -0,0 +1,24 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Intel Elkhart Lake PSE I/O Auxiliary Device + * + * Copyright (c) 2025 Intel Corporation. + * + * Author: Raag Jadav <raag.jadav@intel.com> + */ + +#ifndef _EHL_PSE_IO_AUX_H_ +#define _EHL_PSE_IO_AUX_H_ + +#include <linux/ioport.h> + +#define EHL_PSE_IO_NAME "ehl_pse_io" +#define EHL_PSE_GPIO_NAME "gpio" +#define EHL_PSE_TIO_NAME "pps_tio" + +struct ehl_pse_io_data { + struct resource mem; + int irq; +}; + +#endif /* _EHL_PSE_IO_AUX_H_ */ |