diff options
Diffstat (limited to 'drivers/media/platform/rockchip/rkisp1/rkisp1-debug.c')
| -rw-r--r-- | drivers/media/platform/rockchip/rkisp1/rkisp1-debug.c | 243 |
1 files changed, 243 insertions, 0 deletions
diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-debug.c b/drivers/media/platform/rockchip/rkisp1/rkisp1-debug.c new file mode 100644 index 000000000..71df3dc95 --- /dev/null +++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-debug.c @@ -0,0 +1,243 @@ +// SPDX-License-Identifier: (GPL-2.0+ OR MIT) +/* + * Rockchip ISP1 Driver - Base driver + * + * Copyright (C) 2019 Collabora, Ltd. + * + * Based on Rockchip ISP1 driver by Rockchip Electronics Co., Ltd. + * Copyright (C) 2017 Rockchip Electronics Co., Ltd. + */ + +#include <linux/debugfs.h> +#include <linux/delay.h> +#include <linux/device.h> +#include <linux/minmax.h> +#include <linux/pm_runtime.h> +#include <linux/seq_file.h> +#include <linux/string.h> + +#include "rkisp1-common.h" +#include "rkisp1-regs.h" + +struct rkisp1_debug_register { + u32 reg; + u32 shd; + const char * const name; +}; + +#define RKISP1_DEBUG_REG(name) { RKISP1_CIF_##name, 0, #name } +#define RKISP1_DEBUG_SHD_REG(name) { \ + RKISP1_CIF_##name, RKISP1_CIF_##name##_SHD, #name \ +} + +/* Keep this up-to-date when adding new registers. */ +#define RKISP1_MAX_REG_LENGTH 21 + +static int rkisp1_debug_dump_regs(struct rkisp1_device *rkisp1, + struct seq_file *m, unsigned int offset, + const struct rkisp1_debug_register *regs) +{ + const int width = RKISP1_MAX_REG_LENGTH; + u32 val, shd; + int ret; + + ret = pm_runtime_get_if_in_use(rkisp1->dev); + if (ret <= 0) + return ret ? : -ENODATA; + + for (; regs->name; ++regs) { + val = rkisp1_read(rkisp1, offset + regs->reg); + + if (regs->shd) { + shd = rkisp1_read(rkisp1, offset + regs->shd); + seq_printf(m, "%*s: 0x%08x/0x%08x\n", width, regs->name, + val, shd); + } else { + seq_printf(m, "%*s: 0x%08x\n", width, regs->name, val); + } + } + + pm_runtime_put(rkisp1->dev); + + return 0; +} + +static int rkisp1_debug_dump_core_regs_show(struct seq_file *m, void *p) +{ + static const struct rkisp1_debug_register registers[] = { + RKISP1_DEBUG_REG(VI_CCL), + RKISP1_DEBUG_REG(VI_ICCL), + RKISP1_DEBUG_REG(VI_IRCL), + RKISP1_DEBUG_REG(VI_DPCL), + RKISP1_DEBUG_REG(MI_CTRL), + RKISP1_DEBUG_REG(MI_BYTE_CNT), + RKISP1_DEBUG_REG(MI_CTRL_SHD), + RKISP1_DEBUG_REG(MI_RIS), + RKISP1_DEBUG_REG(MI_STATUS), + RKISP1_DEBUG_REG(MI_DMA_CTRL), + RKISP1_DEBUG_REG(MI_DMA_STATUS), + { /* Sentinel */ }, + }; + struct rkisp1_device *rkisp1 = m->private; + + return rkisp1_debug_dump_regs(rkisp1, m, 0, registers); +} +DEFINE_SHOW_ATTRIBUTE(rkisp1_debug_dump_core_regs); + +static int rkisp1_debug_dump_isp_regs_show(struct seq_file *m, void *p) +{ + static const struct rkisp1_debug_register registers[] = { + RKISP1_DEBUG_REG(ISP_CTRL), + RKISP1_DEBUG_REG(ISP_ACQ_PROP), + RKISP1_DEBUG_REG(ISP_FLAGS_SHD), + RKISP1_DEBUG_REG(ISP_RIS), + RKISP1_DEBUG_REG(ISP_ERR), + { /* Sentinel */ }, + }; + struct rkisp1_device *rkisp1 = m->private; + + return rkisp1_debug_dump_regs(rkisp1, m, 0, registers); +} +DEFINE_SHOW_ATTRIBUTE(rkisp1_debug_dump_isp_regs); + +static int rkisp1_debug_dump_rsz_regs_show(struct seq_file *m, void *p) +{ + static const struct rkisp1_debug_register registers[] = { + RKISP1_DEBUG_SHD_REG(RSZ_CTRL), + RKISP1_DEBUG_SHD_REG(RSZ_SCALE_HY), + RKISP1_DEBUG_SHD_REG(RSZ_SCALE_HCB), + RKISP1_DEBUG_SHD_REG(RSZ_SCALE_HCR), + RKISP1_DEBUG_SHD_REG(RSZ_SCALE_VY), + RKISP1_DEBUG_SHD_REG(RSZ_SCALE_VC), + RKISP1_DEBUG_SHD_REG(RSZ_PHASE_HY), + RKISP1_DEBUG_SHD_REG(RSZ_PHASE_HC), + RKISP1_DEBUG_SHD_REG(RSZ_PHASE_VY), + RKISP1_DEBUG_SHD_REG(RSZ_PHASE_VC), + { /* Sentinel */ }, + }; + struct rkisp1_resizer *rsz = m->private; + + return rkisp1_debug_dump_regs(rsz->rkisp1, m, rsz->regs_base, registers); +} +DEFINE_SHOW_ATTRIBUTE(rkisp1_debug_dump_rsz_regs); + +static int rkisp1_debug_dump_mi_mp_show(struct seq_file *m, void *p) +{ + static const struct rkisp1_debug_register registers[] = { + RKISP1_DEBUG_REG(MI_MP_Y_BASE_AD_INIT), + RKISP1_DEBUG_REG(MI_MP_Y_BASE_AD_INIT2), + RKISP1_DEBUG_REG(MI_MP_Y_BASE_AD_SHD), + RKISP1_DEBUG_REG(MI_MP_Y_SIZE_INIT), + RKISP1_DEBUG_REG(MI_MP_Y_SIZE_INIT), + RKISP1_DEBUG_REG(MI_MP_Y_SIZE_SHD), + RKISP1_DEBUG_REG(MI_MP_Y_OFFS_CNT_SHD), + { /* Sentinel */ }, + }; + struct rkisp1_device *rkisp1 = m->private; + + return rkisp1_debug_dump_regs(rkisp1, m, 0, registers); +} +DEFINE_SHOW_ATTRIBUTE(rkisp1_debug_dump_mi_mp); + +#define RKISP1_DEBUG_DATA_COUNT_BINS 32 +#define RKISP1_DEBUG_DATA_COUNT_STEP (4096 / RKISP1_DEBUG_DATA_COUNT_BINS) + +static int rkisp1_debug_input_status_show(struct seq_file *m, void *p) +{ + struct rkisp1_device *rkisp1 = m->private; + u16 data_count[RKISP1_DEBUG_DATA_COUNT_BINS] = { }; + unsigned int hsync_count = 0; + unsigned int vsync_count = 0; + unsigned int i; + u32 data; + u32 val; + int ret; + + ret = pm_runtime_get_if_in_use(rkisp1->dev); + if (ret <= 0) + return ret ? : -ENODATA; + + /* Sample the ISP input port status 10000 times with a 1µs interval. */ + for (i = 0; i < 10000; ++i) { + val = rkisp1_read(rkisp1, RKISP1_CIF_ISP_FLAGS_SHD); + + data = (val & RKISP1_CIF_ISP_FLAGS_SHD_S_DATA_MASK) + >> RKISP1_CIF_ISP_FLAGS_SHD_S_DATA_SHIFT; + data_count[data / RKISP1_DEBUG_DATA_COUNT_STEP]++; + + if (val & RKISP1_CIF_ISP_FLAGS_SHD_S_HSYNC) + hsync_count++; + if (val & RKISP1_CIF_ISP_FLAGS_SHD_S_VSYNC) + vsync_count++; + + udelay(1); + } + + pm_runtime_put(rkisp1->dev); + + seq_printf(m, "vsync: %u, hsync: %u\n", vsync_count, hsync_count); + seq_puts(m, "data:\n"); + for (i = 0; i < ARRAY_SIZE(data_count); ++i) + seq_printf(m, "- [%04u:%04u]: %u\n", + i * RKISP1_DEBUG_DATA_COUNT_STEP, + (i + 1) * RKISP1_DEBUG_DATA_COUNT_STEP - 1, + data_count[i]); + + return 0; +} +DEFINE_SHOW_ATTRIBUTE(rkisp1_debug_input_status); + +void rkisp1_debug_init(struct rkisp1_device *rkisp1) +{ + struct rkisp1_debug *debug = &rkisp1->debug; + struct dentry *regs_dir; + + debug->debugfs_dir = debugfs_create_dir(dev_name(rkisp1->dev), NULL); + + debugfs_create_ulong("data_loss", 0444, debug->debugfs_dir, + &debug->data_loss); + debugfs_create_ulong("outform_size_err", 0444, debug->debugfs_dir, + &debug->outform_size_error); + debugfs_create_ulong("img_stabilization_size_error", 0444, + debug->debugfs_dir, + &debug->img_stabilization_size_error); + debugfs_create_ulong("inform_size_error", 0444, debug->debugfs_dir, + &debug->inform_size_error); + debugfs_create_ulong("irq_delay", 0444, debug->debugfs_dir, + &debug->irq_delay); + debugfs_create_ulong("mipi_error", 0444, debug->debugfs_dir, + &debug->mipi_error); + debugfs_create_ulong("stats_error", 0444, debug->debugfs_dir, + &debug->stats_error); + debugfs_create_ulong("mp_stop_timeout", 0444, debug->debugfs_dir, + &debug->stop_timeout[RKISP1_MAINPATH]); + debugfs_create_ulong("sp_stop_timeout", 0444, debug->debugfs_dir, + &debug->stop_timeout[RKISP1_SELFPATH]); + debugfs_create_ulong("mp_frame_drop", 0444, debug->debugfs_dir, + &debug->frame_drop[RKISP1_MAINPATH]); + debugfs_create_ulong("sp_frame_drop", 0444, debug->debugfs_dir, + &debug->frame_drop[RKISP1_SELFPATH]); + debugfs_create_file("input_status", 0444, debug->debugfs_dir, rkisp1, + &rkisp1_debug_input_status_fops); + + regs_dir = debugfs_create_dir("regs", debug->debugfs_dir); + + debugfs_create_file("core", 0444, regs_dir, rkisp1, + &rkisp1_debug_dump_core_regs_fops); + debugfs_create_file("isp", 0444, regs_dir, rkisp1, + &rkisp1_debug_dump_isp_regs_fops); + debugfs_create_file("mrsz", 0444, regs_dir, + &rkisp1->resizer_devs[RKISP1_MAINPATH], + &rkisp1_debug_dump_rsz_regs_fops); + debugfs_create_file("srsz", 0444, regs_dir, + &rkisp1->resizer_devs[RKISP1_SELFPATH], + &rkisp1_debug_dump_rsz_regs_fops); + + debugfs_create_file("mi_mp", 0444, regs_dir, rkisp1, + &rkisp1_debug_dump_mi_mp_fops); +} + +void rkisp1_debug_cleanup(struct rkisp1_device *rkisp1) +{ + debugfs_remove_recursive(rkisp1->debug.debugfs_dir); +} |