[COMMON] media: scaler: add context dump for debugging

This patch added information of context that can be useful for
unexpected error case.

Change-Id: I826634b4220ae9a12d9be9fdbbab26908f2333a2
Signed-off-by: Janghyuck Kim <janghyuck.kim@samsung.com>

diff --git a/drivers/media/platform/exynos/scaler/Makefile b/drivers/media/platform/exynos/scaler/Makefile
index 433daaf13d38750a052a2cd21e468fcc4fa16c7f..3afb1874189134cc3602f6cb95b2f6e3089f877f 100644 (file)
--- a/drivers/media/platform/exynos/scaler/Makefile
+++ b/drivers/media/platform/exynos/scaler/Makefile
@@ -5,5 +5,5 @@
 # Licensed under GPLv2
 #
 
-scaler-objs := scaler-core.o scaler-regs.o
+scaler-objs := scaler-core.o scaler-regs.o scaler-debug.o
 obj-$(CONFIG_VIDEO_EXYNOS_SCALER)      += scaler.o

diff --git a/drivers/media/platform/exynos/scaler/scaler-core.c b/drivers/media/platform/exynos/scaler/scaler-core.c
index 5615daf744479ff916d9d620f5e2b31311937626..8d61e4078caf097da736ce03e9fdfd62fc144786 100644 (file)
--- a/drivers/media/platform/exynos/scaler/scaler-core.c
+++ b/drivers/media/platform/exynos/scaler/scaler-core.c
@@ -42,6 +42,9 @@ module_param_named(sc_log_level, sc_log_level, uint, 0644);
 int sc_set_blur;
 module_param_named(sc_set_blur, sc_set_blur, uint, 0644);
 
+int sc_show_stat;
+module_param_named(sc_show_stat, sc_show_stat, uint, 0644);
+
 #define BUF_EXT_SIZE   512
 #define BUF_WIDTH_ALIGN        128
 
@@ -2388,6 +2391,8 @@ static void sc_watchdog(unsigned long arg)
 
        if (test_bit(DEV_RUN, &sc->state)) {
                sc_hwregs_dump(sc);
+               if (sc->current_ctx)
+                       sc_ctx_dump(sc->current_ctx);
                exynos_sysmmu_show_status(sc->dev);
                atomic_inc(&sc->wdt.cnt);
                dev_err(sc->dev, "scaler is still running\n");
@@ -2690,6 +2695,11 @@ static int sc_run_next_job(struct sc_dev *sc)
 
        sc_hwset_int_en(sc);
 
+       if (sc_show_stat & 0x1)
+               sc_hwregs_dump(sc);
+       if (sc_show_stat & 0x2)
+               sc_ctx_dump(ctx);
+
        mod_timer(&sc->wdt.timer, jiffies + SC_TIMEOUT);
 
        if (__measure_hw_latency) {

diff --git a/drivers/media/platform/exynos/scaler/scaler-debug.c b/drivers/media/platform/exynos/scaler/scaler-debug.c
new file mode 100644 (file)
index 0000000..a341218
--- /dev/null
+++ b/drivers/media/platform/exynos/scaler/scaler-debug.c
@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 2017 Samsung Electronics Co., Ltd.
+ *             http://www.samsung.com
+ *
+ * Core file for Samsung EXYNOS Scaler driver
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+#include "scaler.h"
+
+static void show_crop(struct v4l2_rect *rect)
+{
+       pr_info("   - crop: L,T,W,H: %d, %d, %d, %d\n",
+                       rect->left, rect->top, rect->width, rect->height);
+}
+
+static void show_addr(struct sc_addr *addr)
+{
+       int i;
+
+       for (i = 0; i < SC_MAX_PLANES; i++)
+               pr_info("  * plane%d. addr: %#lx, size: %#x\n",
+                       i, (unsigned long)addr->ioaddr[i], addr->size[i]);
+}
+
+static void show_frame(char *name, struct sc_frame *frame)
+{
+       pr_info("  * %s) WxH : %d x %d\n", name, frame->width, frame->height);
+       show_crop(&frame->crop);
+       show_addr(&frame->addr);
+       if (frame->sc_fmt)
+               pr_info("  * Name : %s\n", frame->sc_fmt->name);
+
+}
+
+static void show_int_frame(struct sc_int_frame *i_frame)
+{
+       show_addr(&i_frame->src_addr);
+       show_addr(&i_frame->dst_addr);
+}
+
+void sc_ctx_dump(struct sc_ctx *ctx)
+{
+       pr_info("> scaler context info <\n");
+       show_frame("source", &ctx->s_frame);
+       show_frame("dest", &ctx->d_frame);
+       pr_info("  - h_ratio: %#x, v_ratio: %#x\n", ctx->h_ratio, ctx->v_ratio);
+       pr_info("  - flip_rot_cfg: %#x\n", ctx->flip_rot_cfg);
+       pr_info("  - flags: %#lx\n", ctx->flags);
+
+       if (test_bit(CTX_INT_FRAME, &ctx->flags)) {
+               show_frame("Internal", &ctx->i_frame->frame);
+               show_int_frame(ctx->i_frame);
+       }
+}

diff --git a/drivers/media/platform/exynos/scaler/scaler-regs.c b/drivers/media/platform/exynos/scaler/scaler-regs.c
index 0ef48558e7542ad54c0ebcc3d9d4e8be10734207..261bea573b40be8c49804ecf67f7825c71bd74c1 100644 (file)
--- a/drivers/media/platform/exynos/scaler/scaler-regs.c
+++ b/drivers/media/platform/exynos/scaler/scaler-regs.c
@@ -1037,6 +1037,8 @@ static void sc_print_irq_err_status(struct sc_dev *sc, u32 status)
        status >>= 1; /* ignore the INT_STATUS_FRAME_END */
        if (status) {
                sc_hwregs_dump(sc);
+               if (sc->current_ctx)
+                       sc_ctx_dump(sc->current_ctx);
 
                while (status) {
                        if (status & 1)

diff --git a/drivers/media/platform/exynos/scaler/scaler.h b/drivers/media/platform/exynos/scaler/scaler.h
index 53194838749313493bd453ae914c9a65bb8b33b7..63b9aaebbe702c6cb3034ee0280fb75366e1abb4 100644 (file)
--- a/drivers/media/platform/exynos/scaler/scaler.h
+++ b/drivers/media/platform/exynos/scaler/scaler.h
@@ -541,5 +541,6 @@ void sc_hwset_hcoef(struct sc_dev *sc, unsigned int coef);
 void sc_hwset_vcoef(struct sc_dev *sc, unsigned int coef);
 
 void sc_hwregs_dump(struct sc_dev *sc);
+void sc_ctx_dump(struct sc_ctx *ctx);
 
 #endif /* SCALER__H_ */