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| author |   Mika Westerberg <mika.westerberg@linux.intel.com> | 2020-04-16 11:15:33 +0300 |
|---|---|---|
| committer |   Lee Jones <lee.jones@linaro.org> | 2020-04-24 11:17:05 +0100 |
| commit | 54b34aa0a7295c0fc82c72c15bf42c05ad720d5f (patch) | |
| tree | c63e85e72300bed37aa39bdc3cc53e5f0f619ef1 /arch/x86 | |
| parent | Linux 5.7-rc1 (diff) | |
| download | linux-dev-54b34aa0a7295c0fc82c72c15bf42c05ad720d5f.tar.xz linux-dev-54b34aa0a7295c0fc82c72c15bf42c05ad720d5f.zip | |
platform/x86: intel_scu_ipc: Split out SCU IPC functionality from the SCU driver
The SCU IPC functionality is usable outside of Intel MID devices. For
example modern Intel CPUs include the same thing but now it is called
PMC (Power Management Controller) instead of SCU. To make the IPC
available for those split the driver into core part (intel_scu_ipc.c)
and the SCU PCI driver part (intel_scu_pcidrv.c) which then calls the
former before it goes and creates rest of the SCU devices. The SCU IPC
will also register a new class that gets assigned to the device that is
created under the parent PCI device.
We also split the Kconfig symbols so that INTEL_SCU_IPC enables the SCU
IPC library and INTEL_SCU_PCI the SCU driver and convert the users
accordingly. While there remove default y from the INTEL_SCU_PCI symbol
as it is already selected by X86_INTEL_MID.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/Kconfig | 2 | ||||
| -rw-r--r-- | arch/x86/include/asm/intel_scu_ipc.h | 18 |
2 files changed, 19 insertions, 1 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 1d6104ea8af0..5947c7a16d78 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -595,7 +595,7 @@ config X86_INTEL_MID select I2C select DW_APB_TIMER select APB_TIMER - select INTEL_SCU_IPC + select INTEL_SCU_PCI select MFD_INTEL_MSIC ---help--- Select to build a kernel capable of supporting Intel MID (Mobile diff --git a/arch/x86/include/asm/intel_scu_ipc.h b/arch/x86/include/asm/intel_scu_ipc.h index 2a1442ba6e78..c53d18f9440b 100644 --- a/arch/x86/include/asm/intel_scu_ipc.h +++ b/arch/x86/include/asm/intel_scu_ipc.h @@ -2,6 +2,7 @@ #ifndef _ASM_X86_INTEL_SCU_IPC_H_ #define _ASM_X86_INTEL_SCU_IPC_H_ +#include <linux/ioport.h> #include <linux/notifier.h> #define IPCMSG_INDIRECT_READ 0x02 @@ -19,6 +20,23 @@ #define IPC_CMD_VRTC_SETTIME 1 /* Set time */ #define IPC_CMD_VRTC_SETALARM 2 /* Set alarm */ +struct device; +struct intel_scu_ipc_dev; + +/** + * struct intel_scu_ipc_data - Data used to configure SCU IPC + * @mem: Base address of SCU IPC MMIO registers + * @irq: The IRQ number used for SCU (optional) + */ +struct intel_scu_ipc_data { + struct resource mem; + int irq; +}; + +struct intel_scu_ipc_dev * +intel_scu_ipc_register(struct device *parent, + const struct intel_scu_ipc_data *scu_data); + /* Read single register */ int intel_scu_ipc_ioread8(u16 addr, u8 *data); |