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drm/vc4: Use drm_print_regset32() for our debug register dumping.
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This removes a bunch of duplicated boilerplate for the debugfs vs
runtime printk debug dumping.

Signed-off-by: Eric Anholt <eric@anholt.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20190220210343.28157-2-eric@anholt.net
Reviewed-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
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Eric Anholt committed Apr 1, 2019
1 parent 5f513cc commit 3051719
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Showing 9 changed files with 350 additions and 414 deletions.
68 changes: 30 additions & 38 deletions drivers/gpu/drm/vc4/vc4_crtc.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -35,6 +35,7 @@
#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_atomic_uapi.h>
#include <drm/drm_print.h>
#include <drm/drm_probe_helper.h>
#include <linux/clk.h>
#include <drm/drm_fb_cma_helper.h>
Expand Down Expand Up @@ -67,43 +68,29 @@ to_vc4_crtc_state(struct drm_crtc_state *crtc_state)
#define CRTC_WRITE(offset, val) writel(val, vc4_crtc->regs + (offset))
#define CRTC_READ(offset) readl(vc4_crtc->regs + (offset))

#define CRTC_REG(reg) { reg, #reg }
static const struct {
u32 reg;
const char *name;
} crtc_regs[] = {
CRTC_REG(PV_CONTROL),
CRTC_REG(PV_V_CONTROL),
CRTC_REG(PV_VSYNCD_EVEN),
CRTC_REG(PV_HORZA),
CRTC_REG(PV_HORZB),
CRTC_REG(PV_VERTA),
CRTC_REG(PV_VERTB),
CRTC_REG(PV_VERTA_EVEN),
CRTC_REG(PV_VERTB_EVEN),
CRTC_REG(PV_INTEN),
CRTC_REG(PV_INTSTAT),
CRTC_REG(PV_STAT),
CRTC_REG(PV_HACT_ACT),
static const struct debugfs_reg32 crtc_regs[] = {
VC4_REG32(PV_CONTROL),
VC4_REG32(PV_V_CONTROL),
VC4_REG32(PV_VSYNCD_EVEN),
VC4_REG32(PV_HORZA),
VC4_REG32(PV_HORZB),
VC4_REG32(PV_VERTA),
VC4_REG32(PV_VERTB),
VC4_REG32(PV_VERTA_EVEN),
VC4_REG32(PV_VERTB_EVEN),
VC4_REG32(PV_INTEN),
VC4_REG32(PV_INTSTAT),
VC4_REG32(PV_STAT),
VC4_REG32(PV_HACT_ACT),
};

static void vc4_crtc_dump_regs(struct vc4_crtc *vc4_crtc)
{
int i;

for (i = 0; i < ARRAY_SIZE(crtc_regs); i++) {
DRM_INFO("0x%04x (%s): 0x%08x\n",
crtc_regs[i].reg, crtc_regs[i].name,
CRTC_READ(crtc_regs[i].reg));
}
}

#ifdef CONFIG_DEBUG_FS
int vc4_crtc_debugfs_regs(struct seq_file *m, void *unused)
{
struct drm_info_node *node = (struct drm_info_node *)m->private;
struct drm_device *dev = node->minor->dev;
int crtc_index = (uintptr_t)node->info_ent->data;
struct drm_printer p = drm_seq_file_printer(m);
struct drm_crtc *crtc;
struct vc4_crtc *vc4_crtc;
int i;
Expand All @@ -118,11 +105,7 @@ int vc4_crtc_debugfs_regs(struct seq_file *m, void *unused)
return 0;
vc4_crtc = to_vc4_crtc(crtc);

for (i = 0; i < ARRAY_SIZE(crtc_regs); i++) {
seq_printf(m, "%s (0x%04x): 0x%08x\n",
crtc_regs[i].name, crtc_regs[i].reg,
CRTC_READ(crtc_regs[i].reg));
}
drm_print_regset32(&p, &vc4_crtc->regset);

return 0;
}
Expand Down Expand Up @@ -434,8 +417,10 @@ static void vc4_crtc_mode_set_nofb(struct drm_crtc *crtc)
bool debug_dump_regs = false;

if (debug_dump_regs) {
DRM_INFO("CRTC %d regs before:\n", drm_crtc_index(crtc));
vc4_crtc_dump_regs(vc4_crtc);
struct drm_printer p = drm_info_printer(&vc4_crtc->pdev->dev);
dev_info(&vc4_crtc->pdev->dev, "CRTC %d regs before:\n",
drm_crtc_index(crtc));
drm_print_regset32(&p, &vc4_crtc->regset);
}

if (vc4_crtc->channel == 2) {
Expand Down Expand Up @@ -476,8 +461,10 @@ static void vc4_crtc_mode_set_nofb(struct drm_crtc *crtc)
vc4_crtc_lut_load(crtc);

if (debug_dump_regs) {
DRM_INFO("CRTC %d regs after:\n", drm_crtc_index(crtc));
vc4_crtc_dump_regs(vc4_crtc);
struct drm_printer p = drm_info_printer(&vc4_crtc->pdev->dev);
dev_info(&vc4_crtc->pdev->dev, "CRTC %d regs after:\n",
drm_crtc_index(crtc));
drm_print_regset32(&p, &vc4_crtc->regset);
}
}

Expand Down Expand Up @@ -1177,11 +1164,16 @@ static int vc4_crtc_bind(struct device *dev, struct device *master, void *data)
if (!match)
return -ENODEV;
vc4_crtc->data = match->data;
vc4_crtc->pdev = pdev;

vc4_crtc->regs = vc4_ioremap_regs(pdev, 0);
if (IS_ERR(vc4_crtc->regs))
return PTR_ERR(vc4_crtc->regs);

vc4_crtc->regset.base = vc4_crtc->regs;
vc4_crtc->regset.regs = crtc_regs;
vc4_crtc->regset.nregs = ARRAY_SIZE(crtc_regs);

/* For now, we create just the primary and the legacy cursor
* planes. We should be able to stack more planes on easily,
* but to do that we would need to compute the bandwidth
Expand Down
23 changes: 10 additions & 13 deletions drivers/gpu/drm/vc4/vc4_dpi.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -101,6 +101,8 @@ struct vc4_dpi {

struct clk *pixel_clock;
struct clk *core_clock;

struct debugfs_regset32 regset;
};

#define DPI_READ(offset) readl(dpi->regs + (offset))
Expand All @@ -118,13 +120,9 @@ to_vc4_dpi_encoder(struct drm_encoder *encoder)
return container_of(encoder, struct vc4_dpi_encoder, base.base);
}

#define DPI_REG(reg) { reg, #reg }
static const struct {
u32 reg;
const char *name;
} dpi_regs[] = {
DPI_REG(DPI_C),
DPI_REG(DPI_ID),
static const struct debugfs_reg32 dpi_regs[] = {
VC4_REG32(DPI_C),
VC4_REG32(DPI_ID),
};

#ifdef CONFIG_DEBUG_FS
Expand All @@ -134,16 +132,12 @@ int vc4_dpi_debugfs_regs(struct seq_file *m, void *unused)
struct drm_device *dev = node->minor->dev;
struct vc4_dev *vc4 = to_vc4_dev(dev);
struct vc4_dpi *dpi = vc4->dpi;
int i;
struct drm_printer p = drm_seq_file_printer(m);

if (!dpi)
return 0;

for (i = 0; i < ARRAY_SIZE(dpi_regs); i++) {
seq_printf(m, "%s (0x%04x): 0x%08x\n",
dpi_regs[i].name, dpi_regs[i].reg,
DPI_READ(dpi_regs[i].reg));
}
drm_print_regset32(&p, &dpi->regset);

return 0;
}
Expand Down Expand Up @@ -314,6 +308,9 @@ static int vc4_dpi_bind(struct device *dev, struct device *master, void *data)
dpi->regs = vc4_ioremap_regs(pdev, 0);
if (IS_ERR(dpi->regs))
return PTR_ERR(dpi->regs);
dpi->regset.base = dpi->regs;
dpi->regset.regs = dpi_regs;
dpi->regset.nregs = ARRAY_SIZE(dpi_regs);

if (DPI_READ(DPI_ID) != DPI_ID_VALUE) {
dev_err(dev, "Port returned 0x%08x for ID instead of 0x%08x\n",
Expand Down
7 changes: 7 additions & 0 deletions drivers/gpu/drm/vc4/vc4_drv.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -296,6 +296,7 @@ struct vc4_v3d {
struct platform_device *pdev;
void __iomem *regs;
struct clk *clk;
struct debugfs_regset32 regset;
};

struct vc4_hvs {
Expand All @@ -312,6 +313,7 @@ struct vc4_hvs {
spinlock_t mm_lock;

struct drm_mm_node mitchell_netravali_filter;
struct debugfs_regset32 regset;
};

struct vc4_plane {
Expand Down Expand Up @@ -431,6 +433,7 @@ struct vc4_crtc_data {

struct vc4_crtc {
struct drm_crtc base;
struct platform_device *pdev;
const struct vc4_crtc_data *data;
void __iomem *regs;

Expand All @@ -447,6 +450,8 @@ struct vc4_crtc {
u32 cob_size;

struct drm_pending_vblank_event *event;

struct debugfs_regset32 regset;
};

static inline struct vc4_crtc *
Expand All @@ -460,6 +465,8 @@ to_vc4_crtc(struct drm_crtc *crtc)
#define HVS_READ(offset) readl(vc4->hvs->regs + offset)
#define HVS_WRITE(offset, val) writel(val, vc4->hvs->regs + offset)

#define VC4_REG32(reg) { .name = #reg, .offset = reg }

struct vc4_exec_info {
/* Sequence number for this bin/render job. */
uint64_t seqno;
Expand Down
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