diff options
Diffstat (limited to 'drivers/staging/media/atomisp/pci/runtime/event/src/event.c')
-rw-r--r-- | drivers/staging/media/atomisp/pci/runtime/event/src/event.c | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/drivers/staging/media/atomisp/pci/runtime/event/src/event.c b/drivers/staging/media/atomisp/pci/runtime/event/src/event.c new file mode 100644 index 0000000000..e702297b0a --- /dev/null +++ b/drivers/staging/media/atomisp/pci/runtime/event/src/event.c @@ -0,0 +1,110 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * 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. + */ + +#include "sh_css_sp.h" + +#include "dma.h" /* N_DMA_CHANNEL_ID */ + +#include <type_support.h> +#include "ia_css_binary.h" +#include "sh_css_hrt.h" +#include "sh_css_defs.h" +#include "sh_css_internal.h" +#include "ia_css_debug.h" +#include "ia_css_debug_internal.h" +#include "sh_css_legacy.h" + +#include "gdc_device.h" /* HRT_GDC_N */ + +/*#include "sp.h"*/ /* host2sp_enqueue_frame_data() */ + +#include "assert_support.h" + +#include "ia_css_queue.h" /* host_sp_enqueue_XXX */ +#include "ia_css_event.h" /* ia_css_event_encode */ +/* + * @brief Encode the information into the software-event. + * Refer to "sw_event_public.h" for details. + */ +bool ia_css_event_encode( + u8 *in, + u8 nr, + uint32_t *out) +{ + bool ret; + u32 nr_of_bits; + u32 i; + + assert(in); + assert(out); + OP___assert(nr > 0 && nr <= MAX_NR_OF_PAYLOADS_PER_SW_EVENT); + + /* initialize the output */ + *out = 0; + + /* get the number of bits per information */ + nr_of_bits = sizeof(uint32_t) * 8 / nr; + + /* compress the all inputs into a signle output */ + for (i = 0; i < nr; i++) { + *out <<= nr_of_bits; + *out |= in[i]; + } + + /* get the return value */ + ret = (nr > 0 && nr <= MAX_NR_OF_PAYLOADS_PER_SW_EVENT); + + return ret; +} + +void ia_css_event_decode( + u32 event, + uint8_t *payload) +{ + assert(payload[1] == 0); + assert(payload[2] == 0); + assert(payload[3] == 0); + + ia_css_debug_dtrace(IA_CSS_DEBUG_TRACE_PRIVATE, + "ia_css_event_decode() enter:\n"); + + /* First decode according to the common case + * In case of a PORT_EOF event we overwrite with + * the specific values + * This is somewhat ugly but probably somewhat efficient + * (and it avoids some code duplication) + */ + payload[0] = event & 0xff; /*event_code */ + payload[1] = (event >> 8) & 0xff; + payload[2] = (event >> 16) & 0xff; + payload[3] = 0; + + switch (payload[0]) { + case SH_CSS_SP_EVENT_PORT_EOF: + payload[2] = 0; + payload[3] = (event >> 24) & 0xff; + break; + + case SH_CSS_SP_EVENT_ACC_STAGE_COMPLETE: + case SH_CSS_SP_EVENT_TIMER: + case SH_CSS_SP_EVENT_FRAME_TAGGED: + case SH_CSS_SP_EVENT_FW_WARNING: + case SH_CSS_SP_EVENT_FW_ASSERT: + payload[3] = (event >> 24) & 0xff; + break; + default: + break; + } +} |