diff options
Diffstat (limited to 'drivers/staging/media/atomisp/pci/atomisp2/css2400/sh_css_hrt.c')
| -rw-r--r-- | drivers/staging/media/atomisp/pci/atomisp2/css2400/sh_css_hrt.c | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/drivers/staging/media/atomisp/pci/atomisp2/css2400/sh_css_hrt.c b/drivers/staging/media/atomisp/pci/atomisp2/css2400/sh_css_hrt.c new file mode 100644 index 000000000000..0bfebced63af --- /dev/null +++ b/drivers/staging/media/atomisp/pci/atomisp2/css2400/sh_css_hrt.c @@ -0,0 +1,84 @@ +/* + * 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. + */ + +#include "platform_support.h" + +#include "sh_css_hrt.h" +#include "ia_css_debug.h" + +#include "device_access.h" + +#define __INLINE_EVENT__ +#include "event_fifo.h" +#define __INLINE_SP__ +#include "sp.h" +#define __INLINE_ISP__ +#include "isp.h" +#define __INLINE_IRQ__ +#include "irq.h" +#define __INLINE_FIFO_MONITOR__ +#include "fifo_monitor.h" + +/* System independent */ +#include "sh_css_internal.h" + +bool sh_css_hrt_system_is_idle(void) +{ + bool not_idle = false, idle; + fifo_channel_t ch; + + idle = sp_ctrl_getbit(SP0_ID, SP_SC_REG, SP_IDLE_BIT); + not_idle |= !idle; + if (!idle) + IA_CSS_WARNING("SP not idle"); + + idle = isp_ctrl_getbit(ISP0_ID, ISP_SC_REG, ISP_IDLE_BIT); + not_idle |= !idle; + if (!idle) + IA_CSS_WARNING("ISP not idle"); + + for (ch=0; ch<N_FIFO_CHANNEL; ch++) { + fifo_channel_state_t state; + fifo_channel_get_state(FIFO_MONITOR0_ID, ch, &state); + if (state.fifo_valid) { + IA_CSS_WARNING("FIFO channel %d is not empty", ch); + not_idle = true; + } + } + + return !not_idle; +} + +enum ia_css_err sh_css_hrt_sp_wait(void) +{ +#if defined(HAS_IRQ_MAP_VERSION_2) + irq_sw_channel_id_t irq_id = IRQ_SW_CHANNEL0_ID; +#else + irq_sw_channel_id_t irq_id = IRQ_SW_CHANNEL2_ID; +#endif + /* + * Wait till SP is idle or till there is a SW2 interrupt + * The SW2 interrupt will be used when frameloop runs on SP + * and signals an event with similar meaning as SP idle + * (e.g. frame_done) + */ + while (!sp_ctrl_getbit(SP0_ID, SP_SC_REG, SP_IDLE_BIT) && + ((irq_reg_load(IRQ0_ID, + _HRT_IRQ_CONTROLLER_STATUS_REG_IDX) & + (1U<<(irq_id + IRQ_SW_CHANNEL_OFFSET))) == 0)) { + hrt_sleep(); + } + +return IA_CSS_SUCCESS; +} |