Add support for the video pattern generator (VPG) BER pattern mode and
configuration in runtime.
This enables using the debugfs interface to manipulate the VPG after
the pipeline is set.
Also, enables the usage of the VPG BER pattern.
Changes in v2:
- Added VID_MODE_VPG_MODE
- Solved incompatible return type on __get and __set
Reported-by: kbuild test robot <[email protected]>
Reported-by: Adrian Pop <[email protected]>
Cc: Gustavo Pimentel <[email protected]>
Cc: Joao Pinto <[email protected]>
Cc: Jose Abreu <[email protected]>
Signed-off-by: Angelo Ribeiro <[email protected]>
---
drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c | 98 ++++++++++++++++++++++++---
1 file changed, 90 insertions(+), 8 deletions(-)
diff --git a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
index b18351b..9de3645 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
@@ -91,6 +91,7 @@
#define VID_MODE_TYPE_BURST 0x2
#define VID_MODE_TYPE_MASK 0x3
#define VID_MODE_VPG_ENABLE BIT(16)
+#define VID_MODE_VPG_MODE BIT(20)
#define VID_MODE_VPG_HORIZONTAL BIT(24)
#define DSI_VID_PKT_SIZE 0x3c
@@ -221,6 +222,21 @@
#define PHY_STATUS_TIMEOUT_US 10000
#define CMD_PKT_STATUS_TIMEOUT_US 20000
+#ifdef CONFIG_DEBUG_FS
+#define VPG_DEFS(name, dsi) \
+ ((void __force *)&((*dsi).vpg_defs.name))
+
+#define REGISTER(name, mask, dsi) \
+ { #name, VPG_DEFS(name, dsi), mask, dsi }
+
+struct debugfs_entries {
+ const char *name;
+ bool *reg;
+ u32 mask;
+ struct dw_mipi_dsi *dsi;
+};
+#endif /* CONFIG_DEBUG_FS */
+
struct dw_mipi_dsi {
struct drm_bridge bridge;
struct mipi_dsi_host dsi_host;
@@ -238,9 +254,12 @@ struct dw_mipi_dsi {
#ifdef CONFIG_DEBUG_FS
struct dentry *debugfs;
-
- bool vpg;
- bool vpg_horizontal;
+ struct debugfs_entries *debugfs_vpg;
+ struct {
+ bool vpg;
+ bool vpg_horizontal;
+ bool vpg_ber_pattern;
+ } vpg_defs;
#endif /* CONFIG_DEBUG_FS */
struct dw_mipi_dsi *master; /* dual-dsi master ptr */
@@ -530,9 +549,11 @@ static void dw_mipi_dsi_video_mode_config(struct dw_mipi_dsi *dsi)
val |= VID_MODE_TYPE_NON_BURST_SYNC_EVENTS;
#ifdef CONFIG_DEBUG_FS
- if (dsi->vpg) {
+ if (dsi->vpg_defs.vpg) {
val |= VID_MODE_VPG_ENABLE;
- val |= dsi->vpg_horizontal ? VID_MODE_VPG_HORIZONTAL : 0;
+ val |= dsi->vpg_defs.vpg_horizontal ?
+ VID_MODE_VPG_HORIZONTAL : 0;
+ val |= dsi->vpg_defs.vpg_ber_pattern ? VID_MODE_VPG_MODE : 0;
}
#endif /* CONFIG_DEBUG_FS */
@@ -961,6 +982,68 @@ static const struct drm_bridge_funcs dw_mipi_dsi_bridge_funcs = {
#ifdef CONFIG_DEBUG_FS
+int dw_mipi_dsi_debugfs_write(void *data, u64 val)
+{
+ struct debugfs_entries *vpg = data;
+ struct dw_mipi_dsi *dsi;
+ u32 mode_cfg;
+
+ if (!vpg)
+ return -ENODEV;
+
+ dsi = vpg->dsi;
+
+ *vpg->reg = (bool)val;
+
+ mode_cfg = dsi_read(dsi, DSI_VID_MODE_CFG);
+
+ if (*vpg->reg)
+ mode_cfg |= vpg->mask;
+ else
+ mode_cfg &= ~vpg->mask;
+
+ dsi_write(dsi, DSI_VID_MODE_CFG, mode_cfg);
+
+ return 0;
+}
+
+int dw_mipi_dsi_debugfs_show(void *data, u64 *val)
+{
+ struct debugfs_entries *vpg = data;
+
+ if (!vpg)
+ return -ENODEV;
+
+ *val = *vpg->reg;
+
+ return 0;
+}
+
+DEFINE_DEBUGFS_ATTRIBUTE(fops_x32, dw_mipi_dsi_debugfs_show,
+ dw_mipi_dsi_debugfs_write, "%llu\n");
+
+static void debugfs_create_files(void *data)
+{
+ struct dw_mipi_dsi *dsi = data;
+ struct debugfs_entries debugfs[] = {
+ REGISTER(vpg, VID_MODE_VPG_ENABLE, dsi),
+ REGISTER(vpg_horizontal, VID_MODE_VPG_HORIZONTAL, dsi),
+ REGISTER(vpg_ber_pattern, VID_MODE_VPG_MODE, dsi),
+ };
+ int i;
+
+ dsi->debugfs_vpg = kmalloc(sizeof(debugfs), GFP_KERNEL);
+ if (!dsi->debugfs_vpg)
+ return;
+
+ memcpy(dsi->debugfs_vpg, debugfs, sizeof(debugfs));
+
+ for (i = 0; i < ARRAY_SIZE(debugfs); i++)
+ debugfs_create_file(dsi->debugfs_vpg[i].name, 0644,
+ dsi->debugfs, &dsi->debugfs_vpg[i],
+ &fops_x32);
+}
+
static void dw_mipi_dsi_debugfs_init(struct dw_mipi_dsi *dsi)
{
dsi->debugfs = debugfs_create_dir(dev_name(dsi->dev), NULL);
@@ -969,14 +1052,13 @@ static void dw_mipi_dsi_debugfs_init(struct dw_mipi_dsi *dsi)
return;
}
- debugfs_create_bool("vpg", 0660, dsi->debugfs, &dsi->vpg);
- debugfs_create_bool("vpg_horizontal", 0660, dsi->debugfs,
- &dsi->vpg_horizontal);
+ debugfs_create_files(dsi);
}
static void dw_mipi_dsi_debugfs_remove(struct dw_mipi_dsi *dsi)
{
debugfs_remove_recursive(dsi->debugfs);
+ kfree(dsi->debugfs_vpg);
}
#else
--
2.7.4
Hello Angelo,
Tested OK on STM32F769i-DISCO, DSI v1.30, on next-20200406. I guess
there is no horizontal for BER.
Regards,
Adrian
On Mon, Apr 6, 2020 at 4:49 PM Angelo Ribeiro
<[email protected]> wrote:
>
> Add support for the video pattern generator (VPG) BER pattern mode and
> configuration in runtime.
>
> This enables using the debugfs interface to manipulate the VPG after
> the pipeline is set.
> Also, enables the usage of the VPG BER pattern.
>
> Changes in v2:
> - Added VID_MODE_VPG_MODE
> - Solved incompatible return type on __get and __set
>
> Reported-by: kbuild test robot <[email protected]>
> Reported-by: Adrian Pop <[email protected]>
> Cc: Gustavo Pimentel <[email protected]>
> Cc: Joao Pinto <[email protected]>
> Cc: Jose Abreu <[email protected]>
> Signed-off-by: Angelo Ribeiro <[email protected]>
> ---
> drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c | 98 ++++++++++++++++++++++++---
> 1 file changed, 90 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
> index b18351b..9de3645 100644
> --- a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
> +++ b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
> @@ -91,6 +91,7 @@
> #define VID_MODE_TYPE_BURST 0x2
> #define VID_MODE_TYPE_MASK 0x3
> #define VID_MODE_VPG_ENABLE BIT(16)
> +#define VID_MODE_VPG_MODE BIT(20)
> #define VID_MODE_VPG_HORIZONTAL BIT(24)
>
> #define DSI_VID_PKT_SIZE 0x3c
> @@ -221,6 +222,21 @@
> #define PHY_STATUS_TIMEOUT_US 10000
> #define CMD_PKT_STATUS_TIMEOUT_US 20000
>
> +#ifdef CONFIG_DEBUG_FS
> +#define VPG_DEFS(name, dsi) \
> + ((void __force *)&((*dsi).vpg_defs.name))
> +
> +#define REGISTER(name, mask, dsi) \
> + { #name, VPG_DEFS(name, dsi), mask, dsi }
> +
> +struct debugfs_entries {
> + const char *name;
> + bool *reg;
> + u32 mask;
> + struct dw_mipi_dsi *dsi;
> +};
> +#endif /* CONFIG_DEBUG_FS */
> +
> struct dw_mipi_dsi {
> struct drm_bridge bridge;
> struct mipi_dsi_host dsi_host;
> @@ -238,9 +254,12 @@ struct dw_mipi_dsi {
>
> #ifdef CONFIG_DEBUG_FS
> struct dentry *debugfs;
> -
> - bool vpg;
> - bool vpg_horizontal;
> + struct debugfs_entries *debugfs_vpg;
> + struct {
> + bool vpg;
> + bool vpg_horizontal;
> + bool vpg_ber_pattern;
> + } vpg_defs;
> #endif /* CONFIG_DEBUG_FS */
>
> struct dw_mipi_dsi *master; /* dual-dsi master ptr */
> @@ -530,9 +549,11 @@ static void dw_mipi_dsi_video_mode_config(struct dw_mipi_dsi *dsi)
> val |= VID_MODE_TYPE_NON_BURST_SYNC_EVENTS;
>
> #ifdef CONFIG_DEBUG_FS
> - if (dsi->vpg) {
> + if (dsi->vpg_defs.vpg) {
> val |= VID_MODE_VPG_ENABLE;
> - val |= dsi->vpg_horizontal ? VID_MODE_VPG_HORIZONTAL : 0;
> + val |= dsi->vpg_defs.vpg_horizontal ?
> + VID_MODE_VPG_HORIZONTAL : 0;
> + val |= dsi->vpg_defs.vpg_ber_pattern ? VID_MODE_VPG_MODE : 0;
> }
> #endif /* CONFIG_DEBUG_FS */
>
> @@ -961,6 +982,68 @@ static const struct drm_bridge_funcs dw_mipi_dsi_bridge_funcs = {
>
> #ifdef CONFIG_DEBUG_FS
>
> +int dw_mipi_dsi_debugfs_write(void *data, u64 val)
> +{
> + struct debugfs_entries *vpg = data;
> + struct dw_mipi_dsi *dsi;
> + u32 mode_cfg;
> +
> + if (!vpg)
> + return -ENODEV;
> +
> + dsi = vpg->dsi;
> +
> + *vpg->reg = (bool)val;
> +
> + mode_cfg = dsi_read(dsi, DSI_VID_MODE_CFG);
> +
> + if (*vpg->reg)
> + mode_cfg |= vpg->mask;
> + else
> + mode_cfg &= ~vpg->mask;
> +
> + dsi_write(dsi, DSI_VID_MODE_CFG, mode_cfg);
> +
> + return 0;
> +}
> +
> +int dw_mipi_dsi_debugfs_show(void *data, u64 *val)
> +{
> + struct debugfs_entries *vpg = data;
> +
> + if (!vpg)
> + return -ENODEV;
> +
> + *val = *vpg->reg;
> +
> + return 0;
> +}
> +
> +DEFINE_DEBUGFS_ATTRIBUTE(fops_x32, dw_mipi_dsi_debugfs_show,
> + dw_mipi_dsi_debugfs_write, "%llu\n");
> +
> +static void debugfs_create_files(void *data)
> +{
> + struct dw_mipi_dsi *dsi = data;
> + struct debugfs_entries debugfs[] = {
> + REGISTER(vpg, VID_MODE_VPG_ENABLE, dsi),
> + REGISTER(vpg_horizontal, VID_MODE_VPG_HORIZONTAL, dsi),
> + REGISTER(vpg_ber_pattern, VID_MODE_VPG_MODE, dsi),
> + };
> + int i;
> +
> + dsi->debugfs_vpg = kmalloc(sizeof(debugfs), GFP_KERNEL);
> + if (!dsi->debugfs_vpg)
> + return;
> +
> + memcpy(dsi->debugfs_vpg, debugfs, sizeof(debugfs));
> +
> + for (i = 0; i < ARRAY_SIZE(debugfs); i++)
> + debugfs_create_file(dsi->debugfs_vpg[i].name, 0644,
> + dsi->debugfs, &dsi->debugfs_vpg[i],
> + &fops_x32);
> +}
> +
> static void dw_mipi_dsi_debugfs_init(struct dw_mipi_dsi *dsi)
> {
> dsi->debugfs = debugfs_create_dir(dev_name(dsi->dev), NULL);
> @@ -969,14 +1052,13 @@ static void dw_mipi_dsi_debugfs_init(struct dw_mipi_dsi *dsi)
> return;
> }
>
> - debugfs_create_bool("vpg", 0660, dsi->debugfs, &dsi->vpg);
> - debugfs_create_bool("vpg_horizontal", 0660, dsi->debugfs,
> - &dsi->vpg_horizontal);
> + debugfs_create_files(dsi);
> }
>
> static void dw_mipi_dsi_debugfs_remove(struct dw_mipi_dsi *dsi)
> {
> debugfs_remove_recursive(dsi->debugfs);
> + kfree(dsi->debugfs_vpg);
> }
>
> #else
> --
> 2.7.4
>
Tested-by: Adrian Pop <[email protected]>
Tested OK on STM32F769i-DISCO, DSI v1.30, on next-20200406.
On Mon, Apr 6, 2020 at 8:45 PM Adrian Pop <[email protected]> wrote:
>
> Hello Angelo,
>
> Tested OK on STM32F769i-DISCO, DSI v1.30, on next-20200406. I guess
> there is no horizontal for BER.
>
> Regards,
> Adrian
>
> On Mon, Apr 6, 2020 at 4:49 PM Angelo Ribeiro
> <[email protected]> wrote:
> >
> > Add support for the video pattern generator (VPG) BER pattern mode and
> > configuration in runtime.
> >
> > This enables using the debugfs interface to manipulate the VPG after
> > the pipeline is set.
> > Also, enables the usage of the VPG BER pattern.
> >
> > Changes in v2:
> > - Added VID_MODE_VPG_MODE
> > - Solved incompatible return type on __get and __set
> >
> > Reported-by: kbuild test robot <[email protected]>
> > Reported-by: Adrian Pop <[email protected]>
> > Cc: Gustavo Pimentel <[email protected]>
> > Cc: Joao Pinto <[email protected]>
> > Cc: Jose Abreu <[email protected]>
> > Signed-off-by: Angelo Ribeiro <[email protected]>
> > ---
> > drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c | 98 ++++++++++++++++++++++++---
> > 1 file changed, 90 insertions(+), 8 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
> > index b18351b..9de3645 100644
> > --- a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
> > +++ b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
> > @@ -91,6 +91,7 @@
> > #define VID_MODE_TYPE_BURST 0x2
> > #define VID_MODE_TYPE_MASK 0x3
> > #define VID_MODE_VPG_ENABLE BIT(16)
> > +#define VID_MODE_VPG_MODE BIT(20)
> > #define VID_MODE_VPG_HORIZONTAL BIT(24)
> >
> > #define DSI_VID_PKT_SIZE 0x3c
> > @@ -221,6 +222,21 @@
> > #define PHY_STATUS_TIMEOUT_US 10000
> > #define CMD_PKT_STATUS_TIMEOUT_US 20000
> >
> > +#ifdef CONFIG_DEBUG_FS
> > +#define VPG_DEFS(name, dsi) \
> > + ((void __force *)&((*dsi).vpg_defs.name))
> > +
> > +#define REGISTER(name, mask, dsi) \
> > + { #name, VPG_DEFS(name, dsi), mask, dsi }
> > +
> > +struct debugfs_entries {
> > + const char *name;
> > + bool *reg;
> > + u32 mask;
> > + struct dw_mipi_dsi *dsi;
> > +};
> > +#endif /* CONFIG_DEBUG_FS */
> > +
> > struct dw_mipi_dsi {
> > struct drm_bridge bridge;
> > struct mipi_dsi_host dsi_host;
> > @@ -238,9 +254,12 @@ struct dw_mipi_dsi {
> >
> > #ifdef CONFIG_DEBUG_FS
> > struct dentry *debugfs;
> > -
> > - bool vpg;
> > - bool vpg_horizontal;
> > + struct debugfs_entries *debugfs_vpg;
> > + struct {
> > + bool vpg;
> > + bool vpg_horizontal;
> > + bool vpg_ber_pattern;
> > + } vpg_defs;
> > #endif /* CONFIG_DEBUG_FS */
> >
> > struct dw_mipi_dsi *master; /* dual-dsi master ptr */
> > @@ -530,9 +549,11 @@ static void dw_mipi_dsi_video_mode_config(struct dw_mipi_dsi *dsi)
> > val |= VID_MODE_TYPE_NON_BURST_SYNC_EVENTS;
> >
> > #ifdef CONFIG_DEBUG_FS
> > - if (dsi->vpg) {
> > + if (dsi->vpg_defs.vpg) {
> > val |= VID_MODE_VPG_ENABLE;
> > - val |= dsi->vpg_horizontal ? VID_MODE_VPG_HORIZONTAL : 0;
> > + val |= dsi->vpg_defs.vpg_horizontal ?
> > + VID_MODE_VPG_HORIZONTAL : 0;
> > + val |= dsi->vpg_defs.vpg_ber_pattern ? VID_MODE_VPG_MODE : 0;
> > }
> > #endif /* CONFIG_DEBUG_FS */
> >
> > @@ -961,6 +982,68 @@ static const struct drm_bridge_funcs dw_mipi_dsi_bridge_funcs = {
> >
> > #ifdef CONFIG_DEBUG_FS
> >
> > +int dw_mipi_dsi_debugfs_write(void *data, u64 val)
> > +{
> > + struct debugfs_entries *vpg = data;
> > + struct dw_mipi_dsi *dsi;
> > + u32 mode_cfg;
> > +
> > + if (!vpg)
> > + return -ENODEV;
> > +
> > + dsi = vpg->dsi;
> > +
> > + *vpg->reg = (bool)val;
> > +
> > + mode_cfg = dsi_read(dsi, DSI_VID_MODE_CFG);
> > +
> > + if (*vpg->reg)
> > + mode_cfg |= vpg->mask;
> > + else
> > + mode_cfg &= ~vpg->mask;
> > +
> > + dsi_write(dsi, DSI_VID_MODE_CFG, mode_cfg);
> > +
> > + return 0;
> > +}
> > +
> > +int dw_mipi_dsi_debugfs_show(void *data, u64 *val)
> > +{
> > + struct debugfs_entries *vpg = data;
> > +
> > + if (!vpg)
> > + return -ENODEV;
> > +
> > + *val = *vpg->reg;
> > +
> > + return 0;
> > +}
> > +
> > +DEFINE_DEBUGFS_ATTRIBUTE(fops_x32, dw_mipi_dsi_debugfs_show,
> > + dw_mipi_dsi_debugfs_write, "%llu\n");
> > +
> > +static void debugfs_create_files(void *data)
> > +{
> > + struct dw_mipi_dsi *dsi = data;
> > + struct debugfs_entries debugfs[] = {
> > + REGISTER(vpg, VID_MODE_VPG_ENABLE, dsi),
> > + REGISTER(vpg_horizontal, VID_MODE_VPG_HORIZONTAL, dsi),
> > + REGISTER(vpg_ber_pattern, VID_MODE_VPG_MODE, dsi),
> > + };
> > + int i;
> > +
> > + dsi->debugfs_vpg = kmalloc(sizeof(debugfs), GFP_KERNEL);
> > + if (!dsi->debugfs_vpg)
> > + return;
> > +
> > + memcpy(dsi->debugfs_vpg, debugfs, sizeof(debugfs));
> > +
> > + for (i = 0; i < ARRAY_SIZE(debugfs); i++)
> > + debugfs_create_file(dsi->debugfs_vpg[i].name, 0644,
> > + dsi->debugfs, &dsi->debugfs_vpg[i],
> > + &fops_x32);
> > +}
> > +
> > static void dw_mipi_dsi_debugfs_init(struct dw_mipi_dsi *dsi)
> > {
> > dsi->debugfs = debugfs_create_dir(dev_name(dsi->dev), NULL);
> > @@ -969,14 +1052,13 @@ static void dw_mipi_dsi_debugfs_init(struct dw_mipi_dsi *dsi)
> > return;
> > }
> >
> > - debugfs_create_bool("vpg", 0660, dsi->debugfs, &dsi->vpg);
> > - debugfs_create_bool("vpg_horizontal", 0660, dsi->debugfs,
> > - &dsi->vpg_horizontal);
> > + debugfs_create_files(dsi);
> > }
> >
> > static void dw_mipi_dsi_debugfs_remove(struct dw_mipi_dsi *dsi)
> > {
> > debugfs_remove_recursive(dsi->debugfs);
> > + kfree(dsi->debugfs_vpg);
> > }
> >
> > #else
> > --
> > 2.7.4
> >
Hi Adrian,
> -----Original Message-----
> From: Adrian Pop <[email protected]>
> Sent: Tuesday, April 7, 2020 7:58 AM
> To: Angelo Ribeiro <[email protected]>
> Cc: [email protected]; [email protected];
> [email protected]; [email protected]; Daniel Vetter
> <[email protected]>; [email protected]; [email protected];
> [email protected]; [email protected];
> [email protected]; [email protected];
> Gustavo Pimentel <[email protected]>; Joao Pinto <[email protected]>;
> Jose Abreu <[email protected]>
> Subject: Re: [PATCH v2] drm/bridge: dw-mipi-dsi.c: Add VPG runtime config
> through debugfs
>
> Tested-by: Adrian Pop <[email protected]>
> Tested OK on STM32F769i-DISCO, DSI v1.30, on next-20200406.
>
> On Mon, Apr 6, 2020 at 8:45 PM Adrian Pop <[email protected]> wrote:
> >
> > Hello Angelo,
> >
> > Tested OK on STM32F769i-DISCO, DSI v1.30, on next-20200406. I guess
> > there is no horizontal for BER.
Yes, there is no horizontal for BER.
Thank you for testing the patch.
> >
> > Regards,
> > Adrian
> >
> > On Mon, Apr 6, 2020 at 4:49 PM Angelo Ribeiro
> > <[email protected]> wrote:
> > >
> > > Add support for the video pattern generator (VPG) BER pattern mode and
> > > configuration in runtime.
> > >
> > > This enables using the debugfs interface to manipulate the VPG after
> > > the pipeline is set.
> > > Also, enables the usage of the VPG BER pattern.
> > >
> > > Changes in v2:
> > > - Added VID_MODE_VPG_MODE
> > > - Solved incompatible return type on __get and __set
> > >
> > > Reported-by: kbuild test robot <[email protected]>
> > > Reported-by: Adrian Pop <[email protected]>
> > > Cc: Gustavo Pimentel <[email protected]>
> > > Cc: Joao Pinto <[email protected]>
> > > Cc: Jose Abreu <[email protected]>
> > > Signed-off-by: Angelo Ribeiro <[email protected]>
> > > ---
> > > drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c | 98
> ++++++++++++++++++++++++---
> > > 1 file changed, 90 insertions(+), 8 deletions(-)
> > >
> > > diff --git a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
> b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
> > > index b18351b..9de3645 100644
> > > --- a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
> > > +++ b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
> > > @@ -91,6 +91,7 @@
> > > #define VID_MODE_TYPE_BURST 0x2
> > > #define VID_MODE_TYPE_MASK 0x3
> > > #define VID_MODE_VPG_ENABLE BIT(16)
> > > +#define VID_MODE_VPG_MODE BIT(20)
> > > #define VID_MODE_VPG_HORIZONTAL BIT(24)
> > >
> > > #define DSI_VID_PKT_SIZE 0x3c
> > > @@ -221,6 +222,21 @@
> > > #define PHY_STATUS_TIMEOUT_US 10000
> > > #define CMD_PKT_STATUS_TIMEOUT_US 20000
> > >
> > > +#ifdef CONFIG_DEBUG_FS
> > > +#define VPG_DEFS(name, dsi) \
> > > + ((void __force *)&((*dsi).vpg_defs.name))
> > > +
> > > +#define REGISTER(name, mask, dsi) \
> > > + { #name, VPG_DEFS(name, dsi), mask, dsi }
> > > +
> > > +struct debugfs_entries {
> > > + const char *name;
> > > + bool *reg;
> > > + u32 mask;
> > > + struct dw_mipi_dsi *dsi;
> > > +};
> > > +#endif /* CONFIG_DEBUG_FS */
> > > +
> > > struct dw_mipi_dsi {
> > > struct drm_bridge bridge;
> > > struct mipi_dsi_host dsi_host;
> > > @@ -238,9 +254,12 @@ struct dw_mipi_dsi {
> > >
> > > #ifdef CONFIG_DEBUG_FS
> > > struct dentry *debugfs;
> > > -
> > > - bool vpg;
> > > - bool vpg_horizontal;
> > > + struct debugfs_entries *debugfs_vpg;
> > > + struct {
> > > + bool vpg;
> > > + bool vpg_horizontal;
> > > + bool vpg_ber_pattern;
> > > + } vpg_defs;
> > > #endif /* CONFIG_DEBUG_FS */
> > >
> > > struct dw_mipi_dsi *master; /* dual-dsi master ptr */
> > > @@ -530,9 +549,11 @@ static void dw_mipi_dsi_video_mode_config(struct
> dw_mipi_dsi *dsi)
> > > val |= VID_MODE_TYPE_NON_BURST_SYNC_EVENTS;
> > >
> > > #ifdef CONFIG_DEBUG_FS
> > > - if (dsi->vpg) {
> > > + if (dsi->vpg_defs.vpg) {
> > > val |= VID_MODE_VPG_ENABLE;
> > > - val |= dsi->vpg_horizontal ? VID_MODE_VPG_HORIZONTAL :
> 0;
> > > + val |= dsi->vpg_defs.vpg_horizontal ?
> > > + VID_MODE_VPG_HORIZONTAL : 0;
> > > + val |= dsi->vpg_defs.vpg_ber_pattern ?
> VID_MODE_VPG_MODE : 0;
> > > }
> > > #endif /* CONFIG_DEBUG_FS */
> > >
> > > @@ -961,6 +982,68 @@ static const struct drm_bridge_funcs
> dw_mipi_dsi_bridge_funcs = {
> > >
> > > #ifdef CONFIG_DEBUG_FS
> > >
> > > +int dw_mipi_dsi_debugfs_write(void *data, u64 val)
> > > +{
> > > + struct debugfs_entries *vpg = data;
> > > + struct dw_mipi_dsi *dsi;
> > > + u32 mode_cfg;
> > > +
> > > + if (!vpg)
> > > + return -ENODEV;
> > > +
> > > + dsi = vpg->dsi;
> > > +
> > > + *vpg->reg = (bool)val;
> > > +
> > > + mode_cfg = dsi_read(dsi, DSI_VID_MODE_CFG);
> > > +
> > > + if (*vpg->reg)
> > > + mode_cfg |= vpg->mask;
> > > + else
> > > + mode_cfg &= ~vpg->mask;
> > > +
> > > + dsi_write(dsi, DSI_VID_MODE_CFG, mode_cfg);
> > > +
> > > + return 0;
> > > +}
> > > +
> > > +int dw_mipi_dsi_debugfs_show(void *data, u64 *val)
> > > +{
> > > + struct debugfs_entries *vpg = data;
> > > +
> > > + if (!vpg)
> > > + return -ENODEV;
> > > +
> > > + *val = *vpg->reg;
> > > +
> > > + return 0;
> > > +}
> > > +
> > > +DEFINE_DEBUGFS_ATTRIBUTE(fops_x32, dw_mipi_dsi_debugfs_show,
> > > + dw_mipi_dsi_debugfs_write, "%llu\n");
> > > +
> > > +static void debugfs_create_files(void *data)
> > > +{
> > > + struct dw_mipi_dsi *dsi = data;
> > > + struct debugfs_entries debugfs[] = {
> > > + REGISTER(vpg, VID_MODE_VPG_ENABLE, dsi),
> > > + REGISTER(vpg_horizontal, VID_MODE_VPG_HORIZONTAL,
> dsi),
> > > + REGISTER(vpg_ber_pattern, VID_MODE_VPG_MODE, dsi),
> > > + };
> > > + int i;
> > > +
> > > + dsi->debugfs_vpg = kmalloc(sizeof(debugfs), GFP_KERNEL);
> > > + if (!dsi->debugfs_vpg)
> > > + return;
> > > +
> > > + memcpy(dsi->debugfs_vpg, debugfs, sizeof(debugfs));
> > > +
> > > + for (i = 0; i < ARRAY_SIZE(debugfs); i++)
> > > + debugfs_create_file(dsi->debugfs_vpg[i].name, 0644,
> > > + dsi->debugfs, &dsi-
> >debugfs_vpg[i],
> > > + &fops_x32);
> > > +}
> > > +
> > > static void dw_mipi_dsi_debugfs_init(struct dw_mipi_dsi *dsi)
> > > {
> > > dsi->debugfs = debugfs_create_dir(dev_name(dsi->dev), NULL);
> > > @@ -969,14 +1052,13 @@ static void dw_mipi_dsi_debugfs_init(struct
> dw_mipi_dsi *dsi)
> > > return;
> > > }
> > >
> > > - debugfs_create_bool("vpg", 0660, dsi->debugfs, &dsi->vpg);
> > > - debugfs_create_bool("vpg_horizontal", 0660, dsi->debugfs,
> > > - &dsi->vpg_horizontal);
> > > + debugfs_create_files(dsi);
> > > }
> > >
> > > static void dw_mipi_dsi_debugfs_remove(struct dw_mipi_dsi *dsi)
> > > {
> > > debugfs_remove_recursive(dsi->debugfs);
> > > + kfree(dsi->debugfs_vpg);
> > > }
> > >
> > > #else
> > > --
> > > 2.7.4
> > >
Thanks,
Angelo
Hello Angelo,
thanks for the patch.
Tested-by: Yannick Fertre <[email protected]>
Tested OK on STM32MP1-DISCO, DSI v1.31
Best regards
On 4/6/20 3:49 PM, Angelo Ribeiro wrote:
> Add support for the video pattern generator (VPG) BER pattern mode and
> configuration in runtime.
>
> This enables using the debugfs interface to manipulate the VPG after
> the pipeline is set.
> Also, enables the usage of the VPG BER pattern.
>
> Changes in v2:
> - Added VID_MODE_VPG_MODE
> - Solved incompatible return type on __get and __set
>
> Reported-by: kbuild test robot <[email protected]>
> Reported-by: Adrian Pop <[email protected]>
> Cc: Gustavo Pimentel <[email protected]>
> Cc: Joao Pinto <[email protected]>
> Cc: Jose Abreu <[email protected]>
> Signed-off-by: Angelo Ribeiro <[email protected]>
> ---
> drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c | 98 ++++++++++++++++++++++++---
> 1 file changed, 90 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
> index b18351b..9de3645 100644
> --- a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
> +++ b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
> @@ -91,6 +91,7 @@
> #define VID_MODE_TYPE_BURST 0x2
> #define VID_MODE_TYPE_MASK 0x3
> #define VID_MODE_VPG_ENABLE BIT(16)
> +#define VID_MODE_VPG_MODE BIT(20)
> #define VID_MODE_VPG_HORIZONTAL BIT(24)
>
> #define DSI_VID_PKT_SIZE 0x3c
> @@ -221,6 +222,21 @@
> #define PHY_STATUS_TIMEOUT_US 10000
> #define CMD_PKT_STATUS_TIMEOUT_US 20000
>
> +#ifdef CONFIG_DEBUG_FS
> +#define VPG_DEFS(name, dsi) \
> + ((void __force *)&((*dsi).vpg_defs.name))
> +
> +#define REGISTER(name, mask, dsi) \
> + { #name, VPG_DEFS(name, dsi), mask, dsi }
> +
> +struct debugfs_entries {
> + const char *name;
> + bool *reg;
> + u32 mask;
> + struct dw_mipi_dsi *dsi;
> +};
> +#endif /* CONFIG_DEBUG_FS */
> +
> struct dw_mipi_dsi {
> struct drm_bridge bridge;
> struct mipi_dsi_host dsi_host;
> @@ -238,9 +254,12 @@ struct dw_mipi_dsi {
>
> #ifdef CONFIG_DEBUG_FS
> struct dentry *debugfs;
> -
> - bool vpg;
> - bool vpg_horizontal;
> + struct debugfs_entries *debugfs_vpg;
> + struct {
> + bool vpg;
> + bool vpg_horizontal;
> + bool vpg_ber_pattern;
> + } vpg_defs;
> #endif /* CONFIG_DEBUG_FS */
>
> struct dw_mipi_dsi *master; /* dual-dsi master ptr */
> @@ -530,9 +549,11 @@ static void dw_mipi_dsi_video_mode_config(struct dw_mipi_dsi *dsi)
> val |= VID_MODE_TYPE_NON_BURST_SYNC_EVENTS;
>
> #ifdef CONFIG_DEBUG_FS
> - if (dsi->vpg) {
> + if (dsi->vpg_defs.vpg) {
> val |= VID_MODE_VPG_ENABLE;
> - val |= dsi->vpg_horizontal ? VID_MODE_VPG_HORIZONTAL : 0;
> + val |= dsi->vpg_defs.vpg_horizontal ?
> + VID_MODE_VPG_HORIZONTAL : 0;
> + val |= dsi->vpg_defs.vpg_ber_pattern ? VID_MODE_VPG_MODE : 0;
> }
> #endif /* CONFIG_DEBUG_FS */
>
> @@ -961,6 +982,68 @@ static const struct drm_bridge_funcs dw_mipi_dsi_bridge_funcs = {
>
> #ifdef CONFIG_DEBUG_FS
>
> +int dw_mipi_dsi_debugfs_write(void *data, u64 val)
> +{
> + struct debugfs_entries *vpg = data;
> + struct dw_mipi_dsi *dsi;
> + u32 mode_cfg;
> +
> + if (!vpg)
> + return -ENODEV;
> +
> + dsi = vpg->dsi;
> +
> + *vpg->reg = (bool)val;
> +
> + mode_cfg = dsi_read(dsi, DSI_VID_MODE_CFG);
> +
> + if (*vpg->reg)
> + mode_cfg |= vpg->mask;
> + else
> + mode_cfg &= ~vpg->mask;
> +
> + dsi_write(dsi, DSI_VID_MODE_CFG, mode_cfg);
> +
> + return 0;
> +}
> +
> +int dw_mipi_dsi_debugfs_show(void *data, u64 *val)
> +{
> + struct debugfs_entries *vpg = data;
> +
> + if (!vpg)
> + return -ENODEV;
> +
> + *val = *vpg->reg;
> +
> + return 0;
> +}
> +
> +DEFINE_DEBUGFS_ATTRIBUTE(fops_x32, dw_mipi_dsi_debugfs_show,
> + dw_mipi_dsi_debugfs_write, "%llu\n");
> +
> +static void debugfs_create_files(void *data)
> +{
> + struct dw_mipi_dsi *dsi = data;
> + struct debugfs_entries debugfs[] = {
> + REGISTER(vpg, VID_MODE_VPG_ENABLE, dsi),
> + REGISTER(vpg_horizontal, VID_MODE_VPG_HORIZONTAL, dsi),
> + REGISTER(vpg_ber_pattern, VID_MODE_VPG_MODE, dsi),
> + };
> + int i;
> +
> + dsi->debugfs_vpg = kmalloc(sizeof(debugfs), GFP_KERNEL);
> + if (!dsi->debugfs_vpg)
> + return;
> +
> + memcpy(dsi->debugfs_vpg, debugfs, sizeof(debugfs));
> +
> + for (i = 0; i < ARRAY_SIZE(debugfs); i++)
> + debugfs_create_file(dsi->debugfs_vpg[i].name, 0644,
> + dsi->debugfs, &dsi->debugfs_vpg[i],
> + &fops_x32);
> +}
> +
> static void dw_mipi_dsi_debugfs_init(struct dw_mipi_dsi *dsi)
> {
> dsi->debugfs = debugfs_create_dir(dev_name(dsi->dev), NULL);
> @@ -969,14 +1052,13 @@ static void dw_mipi_dsi_debugfs_init(struct dw_mipi_dsi *dsi)
> return;
> }
>
> - debugfs_create_bool("vpg", 0660, dsi->debugfs, &dsi->vpg);
> - debugfs_create_bool("vpg_horizontal", 0660, dsi->debugfs,
> - &dsi->vpg_horizontal);
> + debugfs_create_files(dsi);
> }
>
> static void dw_mipi_dsi_debugfs_remove(struct dw_mipi_dsi *dsi)
> {
> debugfs_remove_recursive(dsi->debugfs);
> + kfree(dsi->debugfs_vpg);
> }
>
> #else
>
Hi,
Is this patch good to go?
@[email protected], @Philippe CORNU
Was already tested by @Yannick FERTRE
and @Adrian Pop
on https://lkml.org/lkml/2020/4/6/691 .
Thanks,
Angelo
From: Yannick
FERTRE <[email protected]>
Date: Wed, Jun 24, 2020 at 16:35:04
> Hello Angelo,
> thanks for the patch.
> Tested-by: Yannick Fertre <[email protected]>
> Tested OK on STM32MP1-DISCO, DSI v1.31
>
> Best regards
>
>
> On 4/6/20 3:49 PM, Angelo Ribeiro wrote:
> > Add support for the video pattern generator (VPG) BER pattern mode and
> > configuration in runtime.
> >
> > This enables using the debugfs interface to manipulate the VPG after
> > the pipeline is set.
> > Also, enables the usage of the VPG BER pattern.
> >
> > Changes in v2:
> > - Added VID_MODE_VPG_MODE
> > - Solved incompatible return type on __get and __set
> >
> > Reported-by: kbuild test robot <[email protected]>
> > Reported-by: Adrian Pop <[email protected]>
> > Cc: Gustavo Pimentel <[email protected]>
> > Cc: Joao Pinto <[email protected]>
> > Cc: Jose Abreu <[email protected]>
> > Signed-off-by: Angelo Ribeiro <[email protected]>
> > ---
> > drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c | 98 ++++++++++++++++++++++++---
> > 1 file changed, 90 insertions(+), 8 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
> > index b18351b..9de3645 100644
> > --- a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
> > +++ b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
> > @@ -91,6 +91,7 @@
> > #define VID_MODE_TYPE_BURST 0x2
> > #define VID_MODE_TYPE_MASK 0x3
> > #define VID_MODE_VPG_ENABLE BIT(16)
> > +#define VID_MODE_VPG_MODE BIT(20)
> > #define VID_MODE_VPG_HORIZONTAL BIT(24)
> >
> > #define DSI_VID_PKT_SIZE 0x3c
> > @@ -221,6 +222,21 @@
> > #define PHY_STATUS_TIMEOUT_US 10000
> > #define CMD_PKT_STATUS_TIMEOUT_US 20000
> >
> > +#ifdef CONFIG_DEBUG_FS
> > +#define VPG_DEFS(name, dsi) \
> > + ((void __force *)&((*dsi).vpg_defs.name))
> > +
> > +#define REGISTER(name, mask, dsi) \
> > + { #name, VPG_DEFS(name, dsi), mask, dsi }
> > +
> > +struct debugfs_entries {
> > + const char *name;
> > + bool *reg;
> > + u32 mask;
> > + struct dw_mipi_dsi *dsi;
> > +};
> > +#endif /* CONFIG_DEBUG_FS */
> > +
> > struct dw_mipi_dsi {
> > struct drm_bridge bridge;
> > struct mipi_dsi_host dsi_host;
> > @@ -238,9 +254,12 @@ struct dw_mipi_dsi {
> >
> > #ifdef CONFIG_DEBUG_FS
> > struct dentry *debugfs;
> > -
> > - bool vpg;
> > - bool vpg_horizontal;
> > + struct debugfs_entries *debugfs_vpg;
> > + struct {
> > + bool vpg;
> > + bool vpg_horizontal;
> > + bool vpg_ber_pattern;
> > + } vpg_defs;
> > #endif /* CONFIG_DEBUG_FS */
> >
> > struct dw_mipi_dsi *master; /* dual-dsi master ptr */
> > @@ -530,9 +549,11 @@ static void dw_mipi_dsi_video_mode_config(struct dw_mipi_dsi *dsi)
> > val |= VID_MODE_TYPE_NON_BURST_SYNC_EVENTS;
> >
> > #ifdef CONFIG_DEBUG_FS
> > - if (dsi->vpg) {
> > + if (dsi->vpg_defs.vpg) {
> > val |= VID_MODE_VPG_ENABLE;
> > - val |= dsi->vpg_horizontal ? VID_MODE_VPG_HORIZONTAL : 0;
> > + val |= dsi->vpg_defs.vpg_horizontal ?
> > + VID_MODE_VPG_HORIZONTAL : 0;
> > + val |= dsi->vpg_defs.vpg_ber_pattern ? VID_MODE_VPG_MODE : 0;
> > }
> > #endif /* CONFIG_DEBUG_FS */
> >
> > @@ -961,6 +982,68 @@ static const struct drm_bridge_funcs dw_mipi_dsi_bridge_funcs = {
> >
> > #ifdef CONFIG_DEBUG_FS
> >
> > +int dw_mipi_dsi_debugfs_write(void *data, u64 val)
> > +{
> > + struct debugfs_entries *vpg = data;
> > + struct dw_mipi_dsi *dsi;
> > + u32 mode_cfg;
> > +
> > + if (!vpg)
> > + return -ENODEV;
> > +
> > + dsi = vpg->dsi;
> > +
> > + *vpg->reg = (bool)val;
> > +
> > + mode_cfg = dsi_read(dsi, DSI_VID_MODE_CFG);
> > +
> > + if (*vpg->reg)
> > + mode_cfg |= vpg->mask;
> > + else
> > + mode_cfg &= ~vpg->mask;
> > +
> > + dsi_write(dsi, DSI_VID_MODE_CFG, mode_cfg);
> > +
> > + return 0;
> > +}
> > +
> > +int dw_mipi_dsi_debugfs_show(void *data, u64 *val)
> > +{
> > + struct debugfs_entries *vpg = data;
> > +
> > + if (!vpg)
> > + return -ENODEV;
> > +
> > + *val = *vpg->reg;
> > +
> > + return 0;
> > +}
> > +
> > +DEFINE_DEBUGFS_ATTRIBUTE(fops_x32, dw_mipi_dsi_debugfs_show,
> > + dw_mipi_dsi_debugfs_write, "%llu\n");
> > +
> > +static void debugfs_create_files(void *data)
> > +{
> > + struct dw_mipi_dsi *dsi = data;
> > + struct debugfs_entries debugfs[] = {
> > + REGISTER(vpg, VID_MODE_VPG_ENABLE, dsi),
> > + REGISTER(vpg_horizontal, VID_MODE_VPG_HORIZONTAL, dsi),
> > + REGISTER(vpg_ber_pattern, VID_MODE_VPG_MODE, dsi),
> > + };
> > + int i;
> > +
> > + dsi->debugfs_vpg = kmalloc(sizeof(debugfs), GFP_KERNEL);
> > + if (!dsi->debugfs_vpg)
> > + return;
> > +
> > + memcpy(dsi->debugfs_vpg, debugfs, sizeof(debugfs));
> > +
> > + for (i = 0; i < ARRAY_SIZE(debugfs); i++)
> > + debugfs_create_file(dsi->debugfs_vpg[i].name, 0644,
> > + dsi->debugfs, &dsi->debugfs_vpg[i],
> > + &fops_x32);
> > +}
> > +
> > static void dw_mipi_dsi_debugfs_init(struct dw_mipi_dsi *dsi)
> > {
> > dsi->debugfs = debugfs_create_dir(dev_name(dsi->dev), NULL);
> > @@ -969,14 +1052,13 @@ static void dw_mipi_dsi_debugfs_init(struct dw_mipi_dsi *dsi)
> > return;
> > }
> >
> > - debugfs_create_bool("vpg", 0660, dsi->debugfs, &dsi->vpg);
> > - debugfs_create_bool("vpg_horizontal", 0660, dsi->debugfs,
> > - &dsi->vpg_horizontal);
> > + debugfs_create_files(dsi);
> > }
> >
> > static void dw_mipi_dsi_debugfs_remove(struct dw_mipi_dsi *dsi)
> > {
> > debugfs_remove_recursive(dsi->debugfs);
> > + kfree(dsi->debugfs_vpg);
> > }
> >
> > #else
> >
> _______________________________________________
> dri-devel mailing list
> [email protected]
> https://urldefense.com/v3/__https://lists.freedesktop.org/mailman/listinfo/dri-devel__;!!A4F2R9G_pg!PaD758-TpCHJcJG4biB5oM3WJXd1mTbLitD8K1qzSVQ4Z06nc__06MR_sz-ITMIl$
Hi,
Le 08/07/2020 ? 19:08, Angelo Ribeiro a ?crit :
> Hi,
>
> Is this patch good to go?
> @[email protected], @Philippe CORNU
>
> Was already tested by @Yannick FERTRE
> and @Adrian Pop
> on https://lkml.org/lkml/2020/4/6/691 .
It would be great to have a review or an ack before applying.
Neil
>
> Thanks,
> Angelo
>
> From: Yannick
> FERTRE <[email protected]>
> Date: Wed, Jun 24, 2020 at 16:35:04
>
>> Hello Angelo,
>> thanks for the patch.
>> Tested-by: Yannick Fertre <[email protected]>
>> Tested OK on STM32MP1-DISCO, DSI v1.31
>>
>> Best regards
>>
>>
>> On 4/6/20 3:49 PM, Angelo Ribeiro wrote:
>>> Add support for the video pattern generator (VPG) BER pattern mode and
>>> configuration in runtime.
>>>
>>> This enables using the debugfs interface to manipulate the VPG after
>>> the pipeline is set.
>>> Also, enables the usage of the VPG BER pattern.
>>>
>>> Changes in v2:
>>> - Added VID_MODE_VPG_MODE
>>> - Solved incompatible return type on __get and __set
>>>
>>> Reported-by: kbuild test robot <[email protected]>
>>> Reported-by: Adrian Pop <[email protected]>
>>> Cc: Gustavo Pimentel <[email protected]>
>>> Cc: Joao Pinto <[email protected]>
>>> Cc: Jose Abreu <[email protected]>
>>> Signed-off-by: Angelo Ribeiro <[email protected]>
>>> ---
>>> drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c | 98 ++++++++++++++++++++++++---
>>> 1 file changed, 90 insertions(+), 8 deletions(-)
>>>
>>> diff --git a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
>>> index b18351b..9de3645 100644
>>> --- a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
>>> +++ b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
>>> @@ -91,6 +91,7 @@
>>> #define VID_MODE_TYPE_BURST 0x2
>>> #define VID_MODE_TYPE_MASK 0x3
>>> #define VID_MODE_VPG_ENABLE BIT(16)
>>> +#define VID_MODE_VPG_MODE BIT(20)
>>> #define VID_MODE_VPG_HORIZONTAL BIT(24)
>>>
>>> #define DSI_VID_PKT_SIZE 0x3c
>>> @@ -221,6 +222,21 @@
>>> #define PHY_STATUS_TIMEOUT_US 10000
>>> #define CMD_PKT_STATUS_TIMEOUT_US 20000
>>>
>>> +#ifdef CONFIG_DEBUG_FS
>>> +#define VPG_DEFS(name, dsi) \
>>> + ((void __force *)&((*dsi).vpg_defs.name))
>>> +
>>> +#define REGISTER(name, mask, dsi) \
>>> + { #name, VPG_DEFS(name, dsi), mask, dsi }
>>> +
>>> +struct debugfs_entries {
>>> + const char *name;
>>> + bool *reg;
>>> + u32 mask;
>>> + struct dw_mipi_dsi *dsi;
>>> +};
>>> +#endif /* CONFIG_DEBUG_FS */
>>> +
>>> struct dw_mipi_dsi {
>>> struct drm_bridge bridge;
>>> struct mipi_dsi_host dsi_host;
>>> @@ -238,9 +254,12 @@ struct dw_mipi_dsi {
>>>
>>> #ifdef CONFIG_DEBUG_FS
>>> struct dentry *debugfs;
>>> -
>>> - bool vpg;
>>> - bool vpg_horizontal;
>>> + struct debugfs_entries *debugfs_vpg;
>>> + struct {
>>> + bool vpg;
>>> + bool vpg_horizontal;
>>> + bool vpg_ber_pattern;
>>> + } vpg_defs;
>>> #endif /* CONFIG_DEBUG_FS */
>>>
>>> struct dw_mipi_dsi *master; /* dual-dsi master ptr */
>>> @@ -530,9 +549,11 @@ static void dw_mipi_dsi_video_mode_config(struct dw_mipi_dsi *dsi)
>>> val |= VID_MODE_TYPE_NON_BURST_SYNC_EVENTS;
>>>
>>> #ifdef CONFIG_DEBUG_FS
>>> - if (dsi->vpg) {
>>> + if (dsi->vpg_defs.vpg) {
>>> val |= VID_MODE_VPG_ENABLE;
>>> - val |= dsi->vpg_horizontal ? VID_MODE_VPG_HORIZONTAL : 0;
>>> + val |= dsi->vpg_defs.vpg_horizontal ?
>>> + VID_MODE_VPG_HORIZONTAL : 0;
>>> + val |= dsi->vpg_defs.vpg_ber_pattern ? VID_MODE_VPG_MODE : 0;
>>> }
>>> #endif /* CONFIG_DEBUG_FS */
>>>
>>> @@ -961,6 +982,68 @@ static const struct drm_bridge_funcs dw_mipi_dsi_bridge_funcs = {
>>>
>>> #ifdef CONFIG_DEBUG_FS
>>>
>>> +int dw_mipi_dsi_debugfs_write(void *data, u64 val)
>>> +{
>>> + struct debugfs_entries *vpg = data;
>>> + struct dw_mipi_dsi *dsi;
>>> + u32 mode_cfg;
>>> +
>>> + if (!vpg)
>>> + return -ENODEV;
>>> +
>>> + dsi = vpg->dsi;
>>> +
>>> + *vpg->reg = (bool)val;
>>> +
>>> + mode_cfg = dsi_read(dsi, DSI_VID_MODE_CFG);
>>> +
>>> + if (*vpg->reg)
>>> + mode_cfg |= vpg->mask;
>>> + else
>>> + mode_cfg &= ~vpg->mask;
>>> +
>>> + dsi_write(dsi, DSI_VID_MODE_CFG, mode_cfg);
>>> +
>>> + return 0;
>>> +}
>>> +
>>> +int dw_mipi_dsi_debugfs_show(void *data, u64 *val)
>>> +{
>>> + struct debugfs_entries *vpg = data;
>>> +
>>> + if (!vpg)
>>> + return -ENODEV;
>>> +
>>> + *val = *vpg->reg;
>>> +
>>> + return 0;
>>> +}
>>> +
>>> +DEFINE_DEBUGFS_ATTRIBUTE(fops_x32, dw_mipi_dsi_debugfs_show,
>>> + dw_mipi_dsi_debugfs_write, "%llu\n");
>>> +
>>> +static void debugfs_create_files(void *data)
>>> +{
>>> + struct dw_mipi_dsi *dsi = data;
>>> + struct debugfs_entries debugfs[] = {
>>> + REGISTER(vpg, VID_MODE_VPG_ENABLE, dsi),
>>> + REGISTER(vpg_horizontal, VID_MODE_VPG_HORIZONTAL, dsi),
>>> + REGISTER(vpg_ber_pattern, VID_MODE_VPG_MODE, dsi),
>>> + };
>>> + int i;
>>> +
>>> + dsi->debugfs_vpg = kmalloc(sizeof(debugfs), GFP_KERNEL);
>>> + if (!dsi->debugfs_vpg)
>>> + return;
>>> +
>>> + memcpy(dsi->debugfs_vpg, debugfs, sizeof(debugfs));
>>> +
>>> + for (i = 0; i < ARRAY_SIZE(debugfs); i++)
>>> + debugfs_create_file(dsi->debugfs_vpg[i].name, 0644,
>>> + dsi->debugfs, &dsi->debugfs_vpg[i],
>>> + &fops_x32);
>>> +}
>>> +
>>> static void dw_mipi_dsi_debugfs_init(struct dw_mipi_dsi *dsi)
>>> {
>>> dsi->debugfs = debugfs_create_dir(dev_name(dsi->dev), NULL);
>>> @@ -969,14 +1052,13 @@ static void dw_mipi_dsi_debugfs_init(struct dw_mipi_dsi *dsi)
>>> return;
>>> }
>>>
>>> - debugfs_create_bool("vpg", 0660, dsi->debugfs, &dsi->vpg);
>>> - debugfs_create_bool("vpg_horizontal", 0660, dsi->debugfs,
>>> - &dsi->vpg_horizontal);
>>> + debugfs_create_files(dsi);
>>> }
>>>
>>> static void dw_mipi_dsi_debugfs_remove(struct dw_mipi_dsi *dsi)
>>> {
>>> debugfs_remove_recursive(dsi->debugfs);
>>> + kfree(dsi->debugfs_vpg);
>>> }
>>>
>>> #else
>>>
>> _______________________________________________
>> dri-devel mailing list
>> [email protected]
>> https://urldefense.com/v3/__https://lists.freedesktop.org/mailman/listinfo/dri-devel__;!!A4F2R9G_pg!PaD758-TpCHJcJG4biB5oM3WJXd1mTbLitD8K1qzSVQ4Z06nc__06MR_sz-ITMIl$
>
>
>
> _______________________________________________
> linux-arm-kernel mailing list
> [email protected]
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
>
On 7/8/20 7:08 PM, Angelo Ribeiro wrote:
> Hi,
>
> Is this patch good to go?
> @[email protected], @Philippe CORNU
>
> Was already tested by @Yannick FERTRE
> and @Adrian Pop
> on https://lkml.org/lkml/2020/4/6/691 .
>
> Thanks,
> Angelo
>
> From: Yannick
> FERTRE <[email protected]>
> Date: Wed, Jun 24, 2020 at 16:35:04
>
>> Hello Angelo,
>> thanks for the patch.
>> Tested-by: Yannick Fertre <[email protected]>
>> Tested OK on STM32MP1-DISCO, DSI v1.31
>>
>> Best regards
>>
>>
>> On 4/6/20 3:49 PM, Angelo Ribeiro wrote:
>>> Add support for the video pattern generator (VPG) BER pattern mode and
>>> configuration in runtime.
>>>
>>> This enables using the debugfs interface to manipulate the VPG after
>>> the pipeline is set.
>>> Also, enables the usage of the VPG BER pattern.
>>>
>>> Changes in v2:
>>> - Added VID_MODE_VPG_MODE
>>> - Solved incompatible return type on __get and __set
>>>
>>> Reported-by: kbuild test robot <[email protected]>
>>> Reported-by: Adrian Pop <[email protected]>
>>> Cc: Gustavo Pimentel <[email protected]>
>>> Cc: Joao Pinto <[email protected]>
>>> Cc: Jose Abreu <[email protected]>
>>> Signed-off-by: Angelo Ribeiro <[email protected]>
>>> ---
>>> drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c | 98 ++++++++++++++++++++++++---
>>> 1 file changed, 90 insertions(+), 8 deletions(-)
>>>
>>> diff --git a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
>>> index b18351b..9de3645 100644
>>> --- a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
>>> +++ b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
>>> @@ -91,6 +91,7 @@
>>> #define VID_MODE_TYPE_BURST 0x2
>>> #define VID_MODE_TYPE_MASK 0x3
>>> #define VID_MODE_VPG_ENABLE BIT(16)
>>> +#define VID_MODE_VPG_MODE BIT(20)
>>> #define VID_MODE_VPG_HORIZONTAL BIT(24)
>>>
>>> #define DSI_VID_PKT_SIZE 0x3c
>>> @@ -221,6 +222,21 @@
>>> #define PHY_STATUS_TIMEOUT_US 10000
>>> #define CMD_PKT_STATUS_TIMEOUT_US 20000
>>>
>>> +#ifdef CONFIG_DEBUG_FS
>>> +#define VPG_DEFS(name, dsi) \
>>> + ((void __force *)&((*dsi).vpg_defs.name))
>>> +
>>> +#define REGISTER(name, mask, dsi) \
>>> + { #name, VPG_DEFS(name, dsi), mask, dsi }
>>> +
>>> +struct debugfs_entries {
>>> + const char *name;
>>> + bool *reg;
>>> + u32 mask;
>>> + struct dw_mipi_dsi *dsi;
>>> +};
>>> +#endif /* CONFIG_DEBUG_FS */
>>> +
>>> struct dw_mipi_dsi {
>>> struct drm_bridge bridge;
>>> struct mipi_dsi_host dsi_host;
>>> @@ -238,9 +254,12 @@ struct dw_mipi_dsi {
>>>
>>> #ifdef CONFIG_DEBUG_FS
>>> struct dentry *debugfs;
>>> -
>>> - bool vpg;
>>> - bool vpg_horizontal;
>>> + struct debugfs_entries *debugfs_vpg;
>>> + struct {
>>> + bool vpg;
>>> + bool vpg_horizontal;
>>> + bool vpg_ber_pattern;
>>> + } vpg_defs;
>>> #endif /* CONFIG_DEBUG_FS */
>>>
>>> struct dw_mipi_dsi *master; /* dual-dsi master ptr */
>>> @@ -530,9 +549,11 @@ static void dw_mipi_dsi_video_mode_config(struct dw_mipi_dsi *dsi)
>>> val |= VID_MODE_TYPE_NON_BURST_SYNC_EVENTS;
>>>
>>> #ifdef CONFIG_DEBUG_FS
>>> - if (dsi->vpg) {
>>> + if (dsi->vpg_defs.vpg) {
>>> val |= VID_MODE_VPG_ENABLE;
>>> - val |= dsi->vpg_horizontal ? VID_MODE_VPG_HORIZONTAL : 0;
>>> + val |= dsi->vpg_defs.vpg_horizontal ?
>>> + VID_MODE_VPG_HORIZONTAL : 0;
>>> + val |= dsi->vpg_defs.vpg_ber_pattern ? VID_MODE_VPG_MODE : 0;
>>> }
>>> #endif /* CONFIG_DEBUG_FS */
>>>
>>> @@ -961,6 +982,68 @@ static const struct drm_bridge_funcs dw_mipi_dsi_bridge_funcs = {
>>>
>>> #ifdef CONFIG_DEBUG_FS
>>>
>>> +int dw_mipi_dsi_debugfs_write(void *data, u64 val)
>>> +{
>>> + struct debugfs_entries *vpg = data;
>>> + struct dw_mipi_dsi *dsi;
>>> + u32 mode_cfg;
>>> +
>>> + if (!vpg)
>>> + return -ENODEV;
>>> +
>>> + dsi = vpg->dsi;
>>> +
>>> + *vpg->reg = (bool)val;
>>> +
>>> + mode_cfg = dsi_read(dsi, DSI_VID_MODE_CFG);
>>> +
>>> + if (*vpg->reg)
>>> + mode_cfg |= vpg->mask;
>>> + else
>>> + mode_cfg &= ~vpg->mask;
>>> +
>>> + dsi_write(dsi, DSI_VID_MODE_CFG, mode_cfg);
>>> +
>>> + return 0;
>>> +}
>>> +
>>> +int dw_mipi_dsi_debugfs_show(void *data, u64 *val)
>>> +{
>>> + struct debugfs_entries *vpg = data;
>>> +
>>> + if (!vpg)
>>> + return -ENODEV;
>>> +
>>> + *val = *vpg->reg;
>>> +
>>> + return 0;
>>> +}
>>> +
>>> +DEFINE_DEBUGFS_ATTRIBUTE(fops_x32, dw_mipi_dsi_debugfs_show,
>>> + dw_mipi_dsi_debugfs_write, "%llu\n");
>>> +
>>> +static void debugfs_create_files(void *data)
>>> +{
>>> + struct dw_mipi_dsi *dsi = data;
>>> + struct debugfs_entries debugfs[] = {
>>> + REGISTER(vpg, VID_MODE_VPG_ENABLE, dsi),
>>> + REGISTER(vpg_horizontal, VID_MODE_VPG_HORIZONTAL, dsi),
>>> + REGISTER(vpg_ber_pattern, VID_MODE_VPG_MODE, dsi),
>>> + };
>>> + int i;
>>> +
>>> + dsi->debugfs_vpg = kmalloc(sizeof(debugfs), GFP_KERNEL);
>>> + if (!dsi->debugfs_vpg)
>>> + return;
>>> +
>>> + memcpy(dsi->debugfs_vpg, debugfs, sizeof(debugfs));
>>> +
>>> + for (i = 0; i < ARRAY_SIZE(debugfs); i++)
>>> + debugfs_create_file(dsi->debugfs_vpg[i].name, 0644,
>>> + dsi->debugfs, &dsi->debugfs_vpg[i],
>>> + &fops_x32);
>>> +}
>>> +
>>> static void dw_mipi_dsi_debugfs_init(struct dw_mipi_dsi *dsi)
>>> {
>>> dsi->debugfs = debugfs_create_dir(dev_name(dsi->dev), NULL);
>>> @@ -969,14 +1052,13 @@ static void dw_mipi_dsi_debugfs_init(struct dw_mipi_dsi *dsi)
>>> return;
>>> }
>>>
>>> - debugfs_create_bool("vpg", 0660, dsi->debugfs, &dsi->vpg);
>>> - debugfs_create_bool("vpg_horizontal", 0660, dsi->debugfs,
>>> - &dsi->vpg_horizontal);
>>> + debugfs_create_files(dsi);
Hi Angelo,
And thank you for your patch.
Could you please explain why you have "so many lines" for adding the ber
pattern, instead of these 4 lines :
+#define VID_MODE_VPG_MODE BIT(20)
+bool vpg_ber_pattern;
+val |= dsi->vpg_ber_pattern ? VID_MODE_VPG_MODE : 0;
+debugfs_create_bool("vpg_ber_pattern", 0660, dsi->debugfs,
&dsi->vpg_ber_pattern);
Many thanks
Philippe :-)
>>> }
>>>
>>> static void dw_mipi_dsi_debugfs_remove(struct dw_mipi_dsi *dsi)
>>> {
>>> debugfs_remove_recursive(dsi->debugfs);
>>> + kfree(dsi->debugfs_vpg);
>>> }
>>>
>>> #else
>>>
>> _______________________________________________
>> dri-devel mailing list
>> [email protected]
>> https://urldefense.com/v3/__https://lists.freedesktop.org/mailman/listinfo/dri-devel__;!!A4F2R9G_pg!PaD758-TpCHJcJG4biB5oM3WJXd1mTbLitD8K1qzSVQ4Z06nc__06MR_sz-ITMIl$
>
>
Hi Philippe,
From: Philippe CORNU <[email protected]>
Date: Thu, Jul 09, 2020 at 08:56:10
>
> On 7/8/20 7:08 PM, Angelo Ribeiro wrote:
> > Hi,
> >
> > Is this patch good to go?
> > @[email protected], @Philippe CORNU
> >
> > Was already tested by @Yannick FERTRE
> > and @Adrian Pop
> > on https://urldefense.com/v3/__https://lkml.org/lkml/2020/4/6/691__;!!A4F2R9G_pg!Kt4QZq004dTCJ3GJ6t6RIaJMBrP5tWWgTlboJo1ZICktSxRegGKtp1VxYM1i2PiM$ .
> >
> > Thanks,
> > Angelo
> >
> > From: Yannick
> > FERTRE <[email protected]>
> > Date: Wed, Jun 24, 2020 at 16:35:04
> >
> >> Hello Angelo,
> >> thanks for the patch.
> >> Tested-by: Yannick Fertre <[email protected]>
> >> Tested OK on STM32MP1-DISCO, DSI v1.31
> >>
> >> Best regards
> >>
> >>
> >> On 4/6/20 3:49 PM, Angelo Ribeiro wrote:
> >>> Add support for the video pattern generator (VPG) BER pattern mode and
> >>> configuration in runtime.
> >>>
> >>> This enables using the debugfs interface to manipulate the VPG after
> >>> the pipeline is set.
> >>> Also, enables the usage of the VPG BER pattern.
> >>>
> >>> Changes in v2:
> >>> - Added VID_MODE_VPG_MODE
> >>> - Solved incompatible return type on __get and __set
> >>>
> >>> Reported-by: kbuild test robot <[email protected]>
> >>> Reported-by: Adrian Pop <[email protected]>
> >>> Cc: Gustavo Pimentel <[email protected]>
> >>> Cc: Joao Pinto <[email protected]>
> >>> Cc: Jose Abreu <[email protected]>
> >>> Signed-off-by: Angelo Ribeiro <[email protected]>
> >>> ---
> >>> drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c | 98 ++++++++++++++++++++++++---
> >>> 1 file changed, 90 insertions(+), 8 deletions(-)
> >>>
> >>> diff --git a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
> >>> index b18351b..9de3645 100644
> >>> --- a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
> >>> +++ b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
> >>> @@ -91,6 +91,7 @@
> >>> #define VID_MODE_TYPE_BURST 0x2
> >>> #define VID_MODE_TYPE_MASK 0x3
> >>> #define VID_MODE_VPG_ENABLE BIT(16)
> >>> +#define VID_MODE_VPG_MODE BIT(20)
> >>> #define VID_MODE_VPG_HORIZONTAL BIT(24)
> >>>
> >>> #define DSI_VID_PKT_SIZE 0x3c
> >>> @@ -221,6 +222,21 @@
> >>> #define PHY_STATUS_TIMEOUT_US 10000
> >>> #define CMD_PKT_STATUS_TIMEOUT_US 20000
> >>>
> >>> +#ifdef CONFIG_DEBUG_FS
> >>> +#define VPG_DEFS(name, dsi) \
> >>> + ((void __force *)&((*dsi).vpg_defs.name))
> >>> +
> >>> +#define REGISTER(name, mask, dsi) \
> >>> + { #name, VPG_DEFS(name, dsi), mask, dsi }
> >>> +
> >>> +struct debugfs_entries {
> >>> + const char *name;
> >>> + bool *reg;
> >>> + u32 mask;
> >>> + struct dw_mipi_dsi *dsi;
> >>> +};
> >>> +#endif /* CONFIG_DEBUG_FS */
> >>> +
> >>> struct dw_mipi_dsi {
> >>> struct drm_bridge bridge;
> >>> struct mipi_dsi_host dsi_host;
> >>> @@ -238,9 +254,12 @@ struct dw_mipi_dsi {
> >>>
> >>> #ifdef CONFIG_DEBUG_FS
> >>> struct dentry *debugfs;
> >>> -
> >>> - bool vpg;
> >>> - bool vpg_horizontal;
> >>> + struct debugfs_entries *debugfs_vpg;
> >>> + struct {
> >>> + bool vpg;
> >>> + bool vpg_horizontal;
> >>> + bool vpg_ber_pattern;
> >>> + } vpg_defs;
> >>> #endif /* CONFIG_DEBUG_FS */
> >>>
> >>> struct dw_mipi_dsi *master; /* dual-dsi master ptr */
> >>> @@ -530,9 +549,11 @@ static void dw_mipi_dsi_video_mode_config(struct dw_mipi_dsi *dsi)
> >>> val |= VID_MODE_TYPE_NON_BURST_SYNC_EVENTS;
> >>>
> >>> #ifdef CONFIG_DEBUG_FS
> >>> - if (dsi->vpg) {
> >>> + if (dsi->vpg_defs.vpg) {
> >>> val |= VID_MODE_VPG_ENABLE;
> >>> - val |= dsi->vpg_horizontal ? VID_MODE_VPG_HORIZONTAL : 0;
> >>> + val |= dsi->vpg_defs.vpg_horizontal ?
> >>> + VID_MODE_VPG_HORIZONTAL : 0;
> >>> + val |= dsi->vpg_defs.vpg_ber_pattern ? VID_MODE_VPG_MODE : 0;
> >>> }
> >>> #endif /* CONFIG_DEBUG_FS */
> >>>
> >>> @@ -961,6 +982,68 @@ static const struct drm_bridge_funcs dw_mipi_dsi_bridge_funcs = {
> >>>
> >>> #ifdef CONFIG_DEBUG_FS
> >>>
> >>> +int dw_mipi_dsi_debugfs_write(void *data, u64 val)
> >>> +{
> >>> + struct debugfs_entries *vpg = data;
> >>> + struct dw_mipi_dsi *dsi;
> >>> + u32 mode_cfg;
> >>> +
> >>> + if (!vpg)
> >>> + return -ENODEV;
> >>> +
> >>> + dsi = vpg->dsi;
> >>> +
> >>> + *vpg->reg = (bool)val;
> >>> +
> >>> + mode_cfg = dsi_read(dsi, DSI_VID_MODE_CFG);
> >>> +
> >>> + if (*vpg->reg)
> >>> + mode_cfg |= vpg->mask;
> >>> + else
> >>> + mode_cfg &= ~vpg->mask;
> >>> +
> >>> + dsi_write(dsi, DSI_VID_MODE_CFG, mode_cfg);
> >>> +
> >>> + return 0;
> >>> +}
> >>> +
> >>> +int dw_mipi_dsi_debugfs_show(void *data, u64 *val)
> >>> +{
> >>> + struct debugfs_entries *vpg = data;
> >>> +
> >>> + if (!vpg)
> >>> + return -ENODEV;
> >>> +
> >>> + *val = *vpg->reg;
> >>> +
> >>> + return 0;
> >>> +}
> >>> +
> >>> +DEFINE_DEBUGFS_ATTRIBUTE(fops_x32, dw_mipi_dsi_debugfs_show,
> >>> + dw_mipi_dsi_debugfs_write, "%llu\n");
> >>> +
> >>> +static void debugfs_create_files(void *data)
> >>> +{
> >>> + struct dw_mipi_dsi *dsi = data;
> >>> + struct debugfs_entries debugfs[] = {
> >>> + REGISTER(vpg, VID_MODE_VPG_ENABLE, dsi),
> >>> + REGISTER(vpg_horizontal, VID_MODE_VPG_HORIZONTAL, dsi),
> >>> + REGISTER(vpg_ber_pattern, VID_MODE_VPG_MODE, dsi),
> >>> + };
> >>> + int i;
> >>> +
> >>> + dsi->debugfs_vpg = kmalloc(sizeof(debugfs), GFP_KERNEL);
> >>> + if (!dsi->debugfs_vpg)
> >>> + return;
> >>> +
> >>> + memcpy(dsi->debugfs_vpg, debugfs, sizeof(debugfs));
> >>> +
> >>> + for (i = 0; i < ARRAY_SIZE(debugfs); i++)
> >>> + debugfs_create_file(dsi->debugfs_vpg[i].name, 0644,
> >>> + dsi->debugfs, &dsi->debugfs_vpg[i],
> >>> + &fops_x32);
> >>> +}
> >>> +
> >>> static void dw_mipi_dsi_debugfs_init(struct dw_mipi_dsi *dsi)
> >>> {
> >>> dsi->debugfs = debugfs_create_dir(dev_name(dsi->dev), NULL);
> >>> @@ -969,14 +1052,13 @@ static void dw_mipi_dsi_debugfs_init(struct dw_mipi_dsi *dsi)
> >>> return;
> >>> }
> >>>
> >>> - debugfs_create_bool("vpg", 0660, dsi->debugfs, &dsi->vpg);
> >>> - debugfs_create_bool("vpg_horizontal", 0660, dsi->debugfs,
> >>> - &dsi->vpg_horizontal);
> >>> + debugfs_create_files(dsi);
>
> Hi Angelo,
> And thank you for your patch.
> Could you please explain why you have "so many lines" for adding the ber
> pattern, instead of these 4 lines :
>
> +#define VID_MODE_VPG_MODE BIT(20)
> +bool vpg_ber_pattern;
> +val |= dsi->vpg_ber_pattern ? VID_MODE_VPG_MODE : 0;
> +debugfs_create_bool("vpg_ber_pattern", 0660, dsi->debugfs,
> &dsi->vpg_ber_pattern);
>
> Many thanks
> Philippe :-)
Thank you for the review.
With this implementation you only need to set the debugfs file
to control the VPG. Since the internal VPG is used for debug
purposes it eases the use during your development.
Thanks,
Angelo
>
> >>> }
> >>>
> >>> static void dw_mipi_dsi_debugfs_remove(struct dw_mipi_dsi *dsi)
> >>> {
> >>> debugfs_remove_recursive(dsi->debugfs);
> >>> + kfree(dsi->debugfs_vpg);
> >>> }
> >>>
> >>> #else
> >>>
> >> _______________________________________________
> >> dri-devel mailing list
> >> [email protected]
> >> https://urldefense.com/v3/__https://lists.freedesktop.org/mailman/listinfo/dri-devel__;!!A4F2R9G_pg!PaD758-TpCHJcJG4biB5oM3WJXd1mTbLitD8K1qzSVQ4Z06nc__06MR_sz-ITMIl$
> >
> >
> _______________________________________________
> dri-devel mailing list
> [email protected]
> https://urldefense.com/v3/__https://lists.freedesktop.org/mailman/listinfo/dri-devel__;!!A4F2R9G_pg!Kt4QZq004dTCJ3GJ6t6RIaJMBrP5tWWgTlboJo1ZICktSxRegGKtp1VxYH7H4Xjz$
Hi,
On 06/04/2020 15:49, Angelo Ribeiro wrote:
> Add support for the video pattern generator (VPG) BER pattern mode and
> configuration in runtime.
>
> This enables using the debugfs interface to manipulate the VPG after
> the pipeline is set.
> Also, enables the usage of the VPG BER pattern.
>
> Changes in v2:
> - Added VID_MODE_VPG_MODE
> - Solved incompatible return type on __get and __set
>
> Reported-by: kbuild test robot <[email protected]>
> Reported-by: Adrian Pop <[email protected]>
> Cc: Gustavo Pimentel <[email protected]>
> Cc: Joao Pinto <[email protected]>
> Cc: Jose Abreu <[email protected]>
> Signed-off-by: Angelo Ribeiro <[email protected]>
> ---
> drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c | 98 ++++++++++++++++++++++++---
> 1 file changed, 90 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
> index b18351b..9de3645 100644
> --- a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
> +++ b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
> @@ -91,6 +91,7 @@
> #define VID_MODE_TYPE_BURST 0x2
> #define VID_MODE_TYPE_MASK 0x3
> #define VID_MODE_VPG_ENABLE BIT(16)
> +#define VID_MODE_VPG_MODE BIT(20)
> #define VID_MODE_VPG_HORIZONTAL BIT(24)
>
> #define DSI_VID_PKT_SIZE 0x3c
> @@ -221,6 +222,21 @@
> #define PHY_STATUS_TIMEOUT_US 10000
> #define CMD_PKT_STATUS_TIMEOUT_US 20000
>
> +#ifdef CONFIG_DEBUG_FS
> +#define VPG_DEFS(name, dsi) \
> + ((void __force *)&((*dsi).vpg_defs.name))
> +
> +#define REGISTER(name, mask, dsi) \
> + { #name, VPG_DEFS(name, dsi), mask, dsi }
> +
> +struct debugfs_entries {
> + const char *name;
> + bool *reg;
> + u32 mask;
> + struct dw_mipi_dsi *dsi;
> +};
> +#endif /* CONFIG_DEBUG_FS */
> +
> struct dw_mipi_dsi {
> struct drm_bridge bridge;
> struct mipi_dsi_host dsi_host;
> @@ -238,9 +254,12 @@ struct dw_mipi_dsi {
>
> #ifdef CONFIG_DEBUG_FS
> struct dentry *debugfs;
> -
> - bool vpg;
> - bool vpg_horizontal;
> + struct debugfs_entries *debugfs_vpg;
> + struct {
> + bool vpg;
> + bool vpg_horizontal;
> + bool vpg_ber_pattern;
> + } vpg_defs;
> #endif /* CONFIG_DEBUG_FS */
>
> struct dw_mipi_dsi *master; /* dual-dsi master ptr */
> @@ -530,9 +549,11 @@ static void dw_mipi_dsi_video_mode_config(struct dw_mipi_dsi *dsi)
> val |= VID_MODE_TYPE_NON_BURST_SYNC_EVENTS;
>
> #ifdef CONFIG_DEBUG_FS
> - if (dsi->vpg) {
> + if (dsi->vpg_defs.vpg) {
> val |= VID_MODE_VPG_ENABLE;
> - val |= dsi->vpg_horizontal ? VID_MODE_VPG_HORIZONTAL : 0;
> + val |= dsi->vpg_defs.vpg_horizontal ?
> + VID_MODE_VPG_HORIZONTAL : 0;
> + val |= dsi->vpg_defs.vpg_ber_pattern ? VID_MODE_VPG_MODE : 0;
> }
> #endif /* CONFIG_DEBUG_FS */
>
> @@ -961,6 +982,68 @@ static const struct drm_bridge_funcs dw_mipi_dsi_bridge_funcs = {
>
> #ifdef CONFIG_DEBUG_FS
>
> +int dw_mipi_dsi_debugfs_write(void *data, u64 val)
> +{
> + struct debugfs_entries *vpg = data;
> + struct dw_mipi_dsi *dsi;
> + u32 mode_cfg;
> +
> + if (!vpg)
> + return -ENODEV;
> +
> + dsi = vpg->dsi;
> +
> + *vpg->reg = (bool)val;
> +
> + mode_cfg = dsi_read(dsi, DSI_VID_MODE_CFG);
> +
> + if (*vpg->reg)
> + mode_cfg |= vpg->mask;
> + else
> + mode_cfg &= ~vpg->mask;
> +
> + dsi_write(dsi, DSI_VID_MODE_CFG, mode_cfg);
> +
> + return 0;
> +}
> +
> +int dw_mipi_dsi_debugfs_show(void *data, u64 *val)
> +{
> + struct debugfs_entries *vpg = data;
> +
> + if (!vpg)
> + return -ENODEV;
> +
> + *val = *vpg->reg;
> +
> + return 0;
> +}
> +
> +DEFINE_DEBUGFS_ATTRIBUTE(fops_x32, dw_mipi_dsi_debugfs_show,
> + dw_mipi_dsi_debugfs_write, "%llu\n");
> +
> +static void debugfs_create_files(void *data)
> +{
> + struct dw_mipi_dsi *dsi = data;
> + struct debugfs_entries debugfs[] = {
> + REGISTER(vpg, VID_MODE_VPG_ENABLE, dsi),
> + REGISTER(vpg_horizontal, VID_MODE_VPG_HORIZONTAL, dsi),
> + REGISTER(vpg_ber_pattern, VID_MODE_VPG_MODE, dsi),
> + };
> + int i;
> +
> + dsi->debugfs_vpg = kmalloc(sizeof(debugfs), GFP_KERNEL);
> + if (!dsi->debugfs_vpg)
> + return;
> +
> + memcpy(dsi->debugfs_vpg, debugfs, sizeof(debugfs));
> +
> + for (i = 0; i < ARRAY_SIZE(debugfs); i++)
> + debugfs_create_file(dsi->debugfs_vpg[i].name, 0644,
> + dsi->debugfs, &dsi->debugfs_vpg[i],
> + &fops_x32);
> +}
> +
> static void dw_mipi_dsi_debugfs_init(struct dw_mipi_dsi *dsi)
> {
> dsi->debugfs = debugfs_create_dir(dev_name(dsi->dev), NULL);
> @@ -969,14 +1052,13 @@ static void dw_mipi_dsi_debugfs_init(struct dw_mipi_dsi *dsi)
> return;
> }
>
> - debugfs_create_bool("vpg", 0660, dsi->debugfs, &dsi->vpg);
> - debugfs_create_bool("vpg_horizontal", 0660, dsi->debugfs,
> - &dsi->vpg_horizontal);
> + debugfs_create_files(dsi);
> }
>
> static void dw_mipi_dsi_debugfs_remove(struct dw_mipi_dsi *dsi)
> {
> debugfs_remove_recursive(dsi->debugfs);
> + kfree(dsi->debugfs_vpg);
> }
>
> #else
>
Acked-by: Neil Armstrong <[email protected]>
Applying to drm-misc-next
Thanks,
Neil