drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/isys/src/isys_init.c

#ifndef ISP2401
/*
 * Support for Intel Camera Imaging ISP subsystem.
 * Copyright (c) 2015, Intel Corporation.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope 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.
 */
#else
/**
Support for Intel Camera Imaging ISP subsystem.
Copyright (c) 2010 - 2015, Intel Corporation.

This program is free software; you can redistribute it and/or modify it
under the terms and conditions of the GNU General Public License,
version 2, as published by the Free Software Foundation.

This program is distributed in the hope 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.
*/
#endif

#include "input_system.h"

#ifdef HAS_INPUT_SYSTEM_VERSION_2
#include "ia_css_isys.h"
#include "platform_support.h"

#ifdef USE_INPUT_SYSTEM_VERSION_2401
#include "isys_dma.h"		/* isys2401_dma_set_max_burst_size() */
#include "isys_irq.h"
#endif

#if defined(USE_INPUT_SYSTEM_VERSION_2)
input_system_error_t ia_css_isys_init(void)
{
	backend_channel_cfg_t backend_ch0;
	backend_channel_cfg_t backend_ch1;
	target_cfg2400_t targetB;
	target_cfg2400_t targetC;
	uint32_t acq_mem_region_size = 24;
	uint32_t acq_nof_mem_regions = 2;
	input_system_error_t error = INPUT_SYSTEM_ERR_NO_ERROR;

	memset(&backend_ch0, 0, sizeof(backend_channel_cfg_t));
	memset(&backend_ch1, 0, sizeof(backend_channel_cfg_t));
	memset(&targetB, 0, sizeof(targetB));
	memset(&targetC, 0, sizeof(targetC));

	error = input_system_configuration_reset();
	if (error != INPUT_SYSTEM_ERR_NO_ERROR)
		return error;

	error = input_system_csi_xmem_channel_cfg(
			0,			/*ch_id                 */
			INPUT_SYSTEM_PORT_A,	/*port                  */
			backend_ch0,		/*backend_ch            */
			32,			/*mem_region_size       */
			6,			/*nof_mem_regions       */
			acq_mem_region_size,	/*acq_mem_region_size   */
			acq_nof_mem_regions,	/*acq_nof_mem_regions   */
			targetB,		/*target                */
			3);			/*nof_xmem_buffers      */
	if (error != INPUT_SYSTEM_ERR_NO_ERROR)
		return error;

	error = input_system_csi_xmem_channel_cfg(
			1,			/*ch_id                 */
			INPUT_SYSTEM_PORT_B,	/*port                  */
			backend_ch0,		/*backend_ch            */
			16,			/*mem_region_size       */
			3,			/*nof_mem_regions       */
			acq_mem_region_size,	/*acq_mem_region_size   */
			acq_nof_mem_regions,	/*acq_nof_mem_regions   */
			targetB,		/*target                */
			3);			/*nof_xmem_buffers      */
	if (error != INPUT_SYSTEM_ERR_NO_ERROR)
		return error;

	error = input_system_csi_xmem_channel_cfg(
			2,			/*ch_id                 */
			INPUT_SYSTEM_PORT_C,	/*port                  */
			backend_ch1,		/*backend_ch            */
			32,			/*mem_region_size       */
			3,			/*nof_mem_regions       */
			acq_mem_region_size,	/*acq_mem_region_size   */
			acq_nof_mem_regions,	/*acq_nof_mem_regions   */
			targetC,		/*target                */
			2);			/*nof_xmem_buffers      */
	if (error != INPUT_SYSTEM_ERR_NO_ERROR)
		return error;

	error = input_system_configuration_commit();

	return error;
}
#elif defined(USE_INPUT_SYSTEM_VERSION_2401)
input_system_error_t ia_css_isys_init(void)
{
	input_system_error_t error = INPUT_SYSTEM_ERR_NO_ERROR;

	ia_css_isys_csi_rx_lut_rmgr_init();
	ia_css_isys_ibuf_rmgr_init();
	ia_css_isys_dma_channel_rmgr_init();
	ia_css_isys_stream2mmio_sid_rmgr_init();

	isys2401_dma_set_max_burst_size(ISYS2401_DMA0_ID,
		1 /* Non Burst DMA transactions */);

	/* Enable 2401 input system IRQ status for driver to retrieve */
	isys_irqc_status_enable(ISYS_IRQ0_ID);
	isys_irqc_status_enable(ISYS_IRQ1_ID);
	isys_irqc_status_enable(ISYS_IRQ2_ID);

	return error;
}
#endif

#if defined(USE_INPUT_SYSTEM_VERSION_2)
void ia_css_isys_uninit(void)
{
}
#elif defined(USE_INPUT_SYSTEM_VERSION_2401)
void ia_css_isys_uninit(void)
{
	ia_css_isys_csi_rx_lut_rmgr_uninit();
	ia_css_isys_ibuf_rmgr_uninit();
	ia_css_isys_dma_channel_rmgr_uninit();
	ia_css_isys_stream2mmio_sid_rmgr_uninit();
}
#endif

#endif