diff options
Diffstat (limited to 'drivers/media/platform/nxp/imx8-isi/imx8-isi-debug.c')
-rw-r--r-- | drivers/media/platform/nxp/imx8-isi/imx8-isi-debug.c | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/drivers/media/platform/nxp/imx8-isi/imx8-isi-debug.c b/drivers/media/platform/nxp/imx8-isi/imx8-isi-debug.c new file mode 100644 index 000000000000..6709ab7ea1f3 --- /dev/null +++ b/drivers/media/platform/nxp/imx8-isi/imx8-isi-debug.c @@ -0,0 +1,109 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright 2019-2020 NXP + */ + +#include <linux/debugfs.h> +#include <linux/device.h> +#include <linux/io.h> +#include <linux/kernel.h> +#include <linux/pm_runtime.h> +#include <linux/seq_file.h> +#include <linux/types.h> + +#include "imx8-isi-core.h" +#include "imx8-isi-regs.h" + +static inline u32 mxc_isi_read(struct mxc_isi_pipe *pipe, u32 reg) +{ + return readl(pipe->regs + reg); +} + +static int mxc_isi_debug_dump_regs_show(struct seq_file *m, void *p) +{ +#define MXC_ISI_DEBUG_REG(name) { name, #name } + static const struct { + u32 offset; + const char * const name; + } registers[] = { + MXC_ISI_DEBUG_REG(CHNL_CTRL), + MXC_ISI_DEBUG_REG(CHNL_IMG_CTRL), + MXC_ISI_DEBUG_REG(CHNL_OUT_BUF_CTRL), + MXC_ISI_DEBUG_REG(CHNL_IMG_CFG), + MXC_ISI_DEBUG_REG(CHNL_IER), + MXC_ISI_DEBUG_REG(CHNL_STS), + MXC_ISI_DEBUG_REG(CHNL_SCALE_FACTOR), + MXC_ISI_DEBUG_REG(CHNL_SCALE_OFFSET), + MXC_ISI_DEBUG_REG(CHNL_CROP_ULC), + MXC_ISI_DEBUG_REG(CHNL_CROP_LRC), + MXC_ISI_DEBUG_REG(CHNL_CSC_COEFF0), + MXC_ISI_DEBUG_REG(CHNL_CSC_COEFF1), + MXC_ISI_DEBUG_REG(CHNL_CSC_COEFF2), + MXC_ISI_DEBUG_REG(CHNL_CSC_COEFF3), + MXC_ISI_DEBUG_REG(CHNL_CSC_COEFF4), + MXC_ISI_DEBUG_REG(CHNL_CSC_COEFF5), + MXC_ISI_DEBUG_REG(CHNL_ROI_0_ALPHA), + MXC_ISI_DEBUG_REG(CHNL_ROI_0_ULC), + MXC_ISI_DEBUG_REG(CHNL_ROI_0_LRC), + MXC_ISI_DEBUG_REG(CHNL_ROI_1_ALPHA), + MXC_ISI_DEBUG_REG(CHNL_ROI_1_ULC), + MXC_ISI_DEBUG_REG(CHNL_ROI_1_LRC), + MXC_ISI_DEBUG_REG(CHNL_ROI_2_ALPHA), + MXC_ISI_DEBUG_REG(CHNL_ROI_2_ULC), + MXC_ISI_DEBUG_REG(CHNL_ROI_2_LRC), + MXC_ISI_DEBUG_REG(CHNL_ROI_3_ALPHA), + MXC_ISI_DEBUG_REG(CHNL_ROI_3_ULC), + MXC_ISI_DEBUG_REG(CHNL_ROI_3_LRC), + MXC_ISI_DEBUG_REG(CHNL_OUT_BUF1_ADDR_Y), + MXC_ISI_DEBUG_REG(CHNL_OUT_BUF1_ADDR_U), + MXC_ISI_DEBUG_REG(CHNL_OUT_BUF1_ADDR_V), + MXC_ISI_DEBUG_REG(CHNL_OUT_BUF_PITCH), + MXC_ISI_DEBUG_REG(CHNL_IN_BUF_ADDR), + MXC_ISI_DEBUG_REG(CHNL_IN_BUF_PITCH), + MXC_ISI_DEBUG_REG(CHNL_MEM_RD_CTRL), + MXC_ISI_DEBUG_REG(CHNL_OUT_BUF2_ADDR_Y), + MXC_ISI_DEBUG_REG(CHNL_OUT_BUF2_ADDR_U), + MXC_ISI_DEBUG_REG(CHNL_OUT_BUF2_ADDR_V), + MXC_ISI_DEBUG_REG(CHNL_SCL_IMG_CFG), + MXC_ISI_DEBUG_REG(CHNL_FLOW_CTRL), + }; + + struct mxc_isi_pipe *pipe = m->private; + unsigned int i; + + if (!pm_runtime_get_if_in_use(pipe->isi->dev)) + return 0; + + seq_printf(m, "--- ISI pipe %u registers ---\n", pipe->id); + + for (i = 0; i < ARRAY_SIZE(registers); ++i) + seq_printf(m, "%20s[0x%02x]: 0x%08x\n", + registers[i].name, registers[i].offset, + mxc_isi_read(pipe, registers[i].offset)); + + pm_runtime_put(pipe->isi->dev); + + return 0; +} +DEFINE_SHOW_ATTRIBUTE(mxc_isi_debug_dump_regs); + +void mxc_isi_debug_init(struct mxc_isi_dev *isi) +{ + unsigned int i; + + isi->debugfs_root = debugfs_create_dir(dev_name(isi->dev), NULL); + + for (i = 0; i < isi->pdata->num_channels; ++i) { + struct mxc_isi_pipe *pipe = &isi->pipes[i]; + char name[8]; + + sprintf(name, "pipe%u", pipe->id); + debugfs_create_file(name, 0444, isi->debugfs_root, pipe, + &mxc_isi_debug_dump_regs_fops); + } +} + +void mxc_isi_debug_cleanup(struct mxc_isi_dev *isi) +{ + debugfs_remove_recursive(isi->debugfs_root); +} |