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a52e3a9dba
Factor out the gpio handshaking (using PROGRAM_B, INIT_B and DONE) protocol in xilinx-core so that it can be reused for another driver. This commit does not change anything functionally to xilinx-spi. xilinx-core expects drivers to provide a write(const char* buf, size_t count) function that performs the actual write to the device, as well as a struct device* for resource management. Signed-off-by: Charles Perry <charles.perry@savoirfairelinux.com> Acked-by: Xu Yilun <yilun.xu@intel.com> Link: https://lore.kernel.org/r/20240321220447.3260065-2-charles.perry@savoirfairelinux.com Signed-off-by: Xu Yilun <yilun.xu@linux.intel.com>
28 lines
690 B
C
28 lines
690 B
C
/* SPDX-License-Identifier: GPL-2.0-only */
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#ifndef __XILINX_CORE_H
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#define __XILINX_CORE_H
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#include <linux/device.h>
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/**
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* struct xilinx_fpga_core - interface between the driver and the core manager
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* of Xilinx 7 Series FPGA manager
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* @dev: device node
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* @write: write callback of the driver
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*/
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struct xilinx_fpga_core {
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/* public: */
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struct device *dev;
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int (*write)(struct xilinx_fpga_core *core, const char *buf,
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size_t count);
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/* private: handled by xilinx-core */
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struct gpio_desc *prog_b;
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struct gpio_desc *init_b;
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struct gpio_desc *done;
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};
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int xilinx_core_probe(struct xilinx_fpga_core *core);
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#endif /* __XILINX_CORE_H */
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