[Intel-gfx] [PATCH v2] drm/i915/dsi: switch to drm_panel interface
Jani Nikula
jani.nikula at intel.com
Fri Jan 23 05:30:56 PST 2015
Replace intel_dsi_device and intel_dsi_dev_ops with drm_panel and
drm_panel_funcs. They are adequate for what we have now, and if we end
up needing more than this we should improve drm_panel. This will keep us
better aligned with the drm core infrastructure.
The panel driver initialization changes a bit. It still remains hideous,
but fixing that is beyond the scope here.
v2: extend mode config mutex to cover drm_panel_get_modes (Shobhit)
vbt_panel->intel_dsi = intel_dsi in vbt panel init (Shobhit)
Signed-off-by: Jani Nikula <jani.nikula at intel.com>
---
drivers/gpu/drm/i915/Kconfig | 1 +
drivers/gpu/drm/i915/intel_dsi.c | 68 +++++++----
drivers/gpu/drm/i915/intel_dsi.h | 27 +----
drivers/gpu/drm/i915/intel_dsi_panel_vbt.c | 180 ++++++++++++++++++-----------
4 files changed, 157 insertions(+), 119 deletions(-)
diff --git a/drivers/gpu/drm/i915/Kconfig b/drivers/gpu/drm/i915/Kconfig
index 4e39ab34eb1c..da196cd07263 100644
--- a/drivers/gpu/drm/i915/Kconfig
+++ b/drivers/gpu/drm/i915/Kconfig
@@ -11,6 +11,7 @@ config DRM_I915
select SHMEM
select TMPFS
select DRM_KMS_HELPER
+ select DRM_PANEL
# i915 depends on ACPI_VIDEO when ACPI is enabled
# but for select to work, need to select ACPI_VIDEO's dependencies, ick
select BACKLIGHT_LCD_SUPPORT if ACPI
diff --git a/drivers/gpu/drm/i915/intel_dsi.c b/drivers/gpu/drm/i915/intel_dsi.c
index c56c4150fc13..52c5fabe284a 100644
--- a/drivers/gpu/drm/i915/intel_dsi.c
+++ b/drivers/gpu/drm/i915/intel_dsi.c
@@ -27,18 +27,20 @@
#include <drm/drm_crtc.h>
#include <drm/drm_edid.h>
#include <drm/i915_drm.h>
+#include <drm/drm_panel.h>
#include <linux/slab.h>
#include "i915_drv.h"
#include "intel_drv.h"
#include "intel_dsi.h"
#include "intel_dsi_cmd.h"
-/* the sub-encoders aka panel drivers */
-static const struct intel_dsi_device intel_dsi_devices[] = {
+static const struct {
+ u16 panel_id;
+ struct drm_panel * (*init)(struct intel_dsi *intel_dsi, u16 panel_id);
+} intel_dsi_drivers[] = {
{
.panel_id = MIPI_DSI_GENERIC_PANEL_ID,
- .name = "vbt-generic-dsi-vid-mode-display",
- .dev_ops = &vbt_generic_dsi_display_ops,
+ .init = vbt_panel_init,
},
};
@@ -214,8 +216,7 @@ static void intel_dsi_enable(struct intel_encoder *encoder)
dpi_send_cmd(intel_dsi, TURN_ON, DPI_LP_MODE_EN, port);
msleep(100);
- if (intel_dsi->dev.dev_ops->enable)
- intel_dsi->dev.dev_ops->enable(&intel_dsi->dev);
+ drm_panel_enable(intel_dsi->panel);
for_each_dsi_port(port, intel_dsi->ports)
wait_for_dsi_fifo_empty(intel_dsi, port);
@@ -255,8 +256,7 @@ static void intel_dsi_pre_enable(struct intel_encoder *encoder)
msleep(intel_dsi->panel_on_delay);
- if (intel_dsi->dev.dev_ops->panel_reset)
- intel_dsi->dev.dev_ops->panel_reset(&intel_dsi->dev);
+ drm_panel_prepare(intel_dsi->panel);
for_each_dsi_port(port, intel_dsi->ports)
wait_for_dsi_fifo_empty(intel_dsi, port);
@@ -329,8 +329,7 @@ static void intel_dsi_disable(struct intel_encoder *encoder)
}
/* if disable packets are sent before sending shutdown packet then in
* some next enable sequence send turn on packet error is observed */
- if (intel_dsi->dev.dev_ops->disable)
- intel_dsi->dev.dev_ops->disable(&intel_dsi->dev);
+ drm_panel_disable(intel_dsi->panel);
for_each_dsi_port(port, intel_dsi->ports)
wait_for_dsi_fifo_empty(intel_dsi, port);
@@ -395,8 +394,7 @@ static void intel_dsi_post_disable(struct intel_encoder *encoder)
val &= ~DPOUNIT_CLOCK_GATE_DISABLE;
I915_WRITE(DSPCLK_GATE_D, val);
- if (intel_dsi->dev.dev_ops->disable_panel_power)
- intel_dsi->dev.dev_ops->disable_panel_power(&intel_dsi->dev);
+ drm_panel_unprepare(intel_dsi->panel);
msleep(intel_dsi->panel_off_delay);
msleep(intel_dsi->panel_pwr_cycle_delay);
@@ -760,7 +758,7 @@ static int intel_dsi_get_modes(struct drm_connector *connector)
return 1;
}
-static void intel_dsi_destroy(struct drm_connector *connector)
+static void intel_dsi_connector_destroy(struct drm_connector *connector)
{
struct intel_connector *intel_connector = to_intel_connector(connector);
@@ -770,8 +768,20 @@ static void intel_dsi_destroy(struct drm_connector *connector)
kfree(connector);
}
+static void intel_dsi_encoder_destroy(struct drm_encoder *encoder)
+{
+ struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
+
+ if (intel_dsi->panel) {
+ drm_panel_detach(intel_dsi->panel);
+ /* XXX: Logically this call belongs in the panel driver. */
+ drm_panel_remove(intel_dsi->panel);
+ }
+ intel_encoder_destroy(encoder);
+}
+
static const struct drm_encoder_funcs intel_dsi_funcs = {
- .destroy = intel_encoder_destroy,
+ .destroy = intel_dsi_encoder_destroy,
};
static const struct drm_connector_helper_funcs intel_dsi_connector_helper_funcs = {
@@ -783,7 +793,7 @@ static const struct drm_connector_helper_funcs intel_dsi_connector_helper_funcs
static const struct drm_connector_funcs intel_dsi_connector_funcs = {
.dpms = intel_connector_dpms,
.detect = intel_dsi_detect,
- .destroy = intel_dsi_destroy,
+ .destroy = intel_dsi_connector_destroy,
.fill_modes = drm_helper_probe_single_connector_modes,
};
@@ -794,9 +804,8 @@ void intel_dsi_init(struct drm_device *dev)
struct drm_encoder *encoder;
struct intel_connector *intel_connector;
struct drm_connector *connector;
- struct drm_display_mode *fixed_mode = NULL;
+ struct drm_display_mode *scan, *fixed_mode = NULL;
struct drm_i915_private *dev_priv = dev->dev_private;
- const struct intel_dsi_device *dsi;
unsigned int i;
DRM_DEBUG_KMS("\n");
@@ -853,15 +862,14 @@ void intel_dsi_init(struct drm_device *dev)
intel_dsi->ports = (1 << PORT_C);
}
- for (i = 0; i < ARRAY_SIZE(intel_dsi_devices); i++) {
- dsi = &intel_dsi_devices[i];
- intel_dsi->dev = *dsi;
-
- if (dsi->dev_ops->init(&intel_dsi->dev))
+ for (i = 0; i < ARRAY_SIZE(intel_dsi_drivers); i++) {
+ intel_dsi->panel = intel_dsi_drivers[i].init(intel_dsi,
+ intel_dsi_drivers[i].panel_id);
+ if (intel_dsi->panel)
break;
}
- if (i == ARRAY_SIZE(intel_dsi_devices)) {
+ if (!intel_dsi->panel) {
DRM_DEBUG_KMS("no device found\n");
goto err;
}
@@ -881,13 +889,23 @@ void intel_dsi_init(struct drm_device *dev)
drm_connector_register(connector);
- fixed_mode = dsi->dev_ops->get_modes(&intel_dsi->dev);
+ drm_panel_attach(intel_dsi->panel, connector);
+
+ mutex_lock(&dev->mode_config.mutex);
+ drm_panel_get_modes(intel_dsi->panel);
+ list_for_each_entry(scan, &connector->probed_modes, head) {
+ if ((scan->type & DRM_MODE_TYPE_PREFERRED)) {
+ fixed_mode = drm_mode_duplicate(dev, scan);
+ break;
+ }
+ }
+ mutex_unlock(&dev->mode_config.mutex);
+
if (!fixed_mode) {
DRM_DEBUG_KMS("no fixed mode\n");
goto err;
}
- fixed_mode->type |= DRM_MODE_TYPE_PREFERRED;
intel_panel_init(&intel_connector->panel, fixed_mode, NULL);
return;
diff --git a/drivers/gpu/drm/i915/intel_dsi.h b/drivers/gpu/drm/i915/intel_dsi.h
index 22f87036a256..fc0b2b8d90f1 100644
--- a/drivers/gpu/drm/i915/intel_dsi.h
+++ b/drivers/gpu/drm/i915/intel_dsi.h
@@ -33,33 +33,10 @@
#define DSI_DUAL_LINK_FRONT_BACK 1
#define DSI_DUAL_LINK_PIXEL_ALT 2
-struct intel_dsi_device {
- unsigned int panel_id;
- const char *name;
- const struct intel_dsi_dev_ops *dev_ops;
- void *dev_priv;
-};
-
-struct intel_dsi_dev_ops {
- bool (*init)(struct intel_dsi_device *dsi);
-
- void (*panel_reset)(struct intel_dsi_device *dsi);
-
- void (*disable_panel_power)(struct intel_dsi_device *dsi);
-
- /* This callback must be able to assume DSI commands can be sent */
- void (*enable)(struct intel_dsi_device *dsi);
-
- /* This callback must be able to assume DSI commands can be sent */
- void (*disable)(struct intel_dsi_device *dsi);
-
- struct drm_display_mode *(*get_modes)(struct intel_dsi_device *dsi);
-};
-
struct intel_dsi {
struct intel_encoder base;
- struct intel_dsi_device dev;
+ struct drm_panel *panel;
struct intel_connector *attached_connector;
@@ -130,6 +107,6 @@ extern void vlv_enable_dsi_pll(struct intel_encoder *encoder);
extern void vlv_disable_dsi_pll(struct intel_encoder *encoder);
extern u32 vlv_get_dsi_pclk(struct intel_encoder *encoder, int pipe_bpp);
-extern struct intel_dsi_dev_ops vbt_generic_dsi_display_ops;
+struct drm_panel *vbt_panel_init(struct intel_dsi *intel_dsi, u16 panel_id);
#endif /* _INTEL_DSI_H */
diff --git a/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c b/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
index 561ec2981dfd..ac7a24dcf7f7 100644
--- a/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
+++ b/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
@@ -28,6 +28,7 @@
#include <drm/drm_crtc.h>
#include <drm/drm_edid.h>
#include <drm/i915_drm.h>
+#include <drm/drm_panel.h>
#include <linux/slab.h>
#include <video/mipi_display.h>
#include <asm/intel-mid.h>
@@ -37,6 +38,16 @@
#include "intel_dsi.h"
#include "intel_dsi_cmd.h"
+struct vbt_panel {
+ struct drm_panel panel;
+ struct intel_dsi *intel_dsi;
+};
+
+static inline struct vbt_panel *to_vbt_panel(struct drm_panel *panel)
+{
+ return container_of(panel, struct vbt_panel, panel);
+}
+
#define MIPI_TRANSFER_MODE_SHIFT 0
#define MIPI_VIRTUAL_CHANNEL_SHIFT 1
#define MIPI_PORT_SHIFT 3
@@ -272,14 +283,103 @@ static void generic_exec_sequence(struct intel_dsi *intel_dsi, const u8 *data)
}
}
-static bool generic_init(struct intel_dsi_device *dsi)
+static int vbt_panel_prepare(struct drm_panel *panel)
+{
+ struct vbt_panel *vbt_panel = to_vbt_panel(panel);
+ struct intel_dsi *intel_dsi = vbt_panel->intel_dsi;
+ struct drm_device *dev = intel_dsi->base.base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ const u8 *sequence;
+
+ sequence = dev_priv->vbt.dsi.sequence[MIPI_SEQ_ASSERT_RESET];
+ generic_exec_sequence(intel_dsi, sequence);
+
+ sequence = dev_priv->vbt.dsi.sequence[MIPI_SEQ_INIT_OTP];
+ generic_exec_sequence(intel_dsi, sequence);
+
+ return 0;
+}
+
+static int vbt_panel_unprepare(struct drm_panel *panel)
+{
+ struct vbt_panel *vbt_panel = to_vbt_panel(panel);
+ struct intel_dsi *intel_dsi = vbt_panel->intel_dsi;
+ struct drm_device *dev = intel_dsi->base.base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ const u8 *sequence;
+
+ sequence = dev_priv->vbt.dsi.sequence[MIPI_SEQ_DEASSERT_RESET];
+ generic_exec_sequence(intel_dsi, sequence);
+
+ return 0;
+}
+
+static int vbt_panel_enable(struct drm_panel *panel)
+{
+ struct vbt_panel *vbt_panel = to_vbt_panel(panel);
+ struct intel_dsi *intel_dsi = vbt_panel->intel_dsi;
+ struct drm_device *dev = intel_dsi->base.base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ const u8 *sequence;
+
+ sequence = dev_priv->vbt.dsi.sequence[MIPI_SEQ_DISPLAY_ON];
+ generic_exec_sequence(intel_dsi, sequence);
+
+ return 0;
+}
+
+static int vbt_panel_disable(struct drm_panel *panel)
+{
+ struct vbt_panel *vbt_panel = to_vbt_panel(panel);
+ struct intel_dsi *intel_dsi = vbt_panel->intel_dsi;
+ struct drm_device *dev = intel_dsi->base.base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ const u8 *sequence;
+
+ sequence = dev_priv->vbt.dsi.sequence[MIPI_SEQ_DISPLAY_OFF];
+ generic_exec_sequence(intel_dsi, sequence);
+
+ return 0;
+}
+
+static int vbt_panel_get_modes(struct drm_panel *panel)
+{
+ struct vbt_panel *vbt_panel = to_vbt_panel(panel);
+ struct intel_dsi *intel_dsi = vbt_panel->intel_dsi;
+ struct drm_device *dev = intel_dsi->base.base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_display_mode *mode;
+
+ if (!panel->connector)
+ return 0;
+
+ mode = drm_mode_duplicate(dev, dev_priv->vbt.lfp_lvds_vbt_mode);
+ if (!mode)
+ return 0;
+
+ mode->type |= DRM_MODE_TYPE_PREFERRED;
+
+ drm_mode_probed_add(panel->connector, mode);
+
+ return 1;
+}
+
+static const struct drm_panel_funcs vbt_panel_funcs = {
+ .disable = vbt_panel_disable,
+ .unprepare = vbt_panel_unprepare,
+ .prepare = vbt_panel_prepare,
+ .enable = vbt_panel_enable,
+ .get_modes = vbt_panel_get_modes,
+};
+
+struct drm_panel *vbt_panel_init(struct intel_dsi *intel_dsi, u16 panel_id)
{
- struct intel_dsi *intel_dsi = container_of(dsi, struct intel_dsi, dev);
struct drm_device *dev = intel_dsi->base.base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
struct mipi_config *mipi_config = dev_priv->vbt.dsi.config;
struct mipi_pps_data *pps = dev_priv->vbt.dsi.pps;
struct drm_display_mode *mode = dev_priv->vbt.lfp_lvds_vbt_mode;
+ struct vbt_panel *vbt_panel;
u32 bits_per_pixel = 24;
u32 tlpx_ns, extra_byte_count, bitrate, tlpx_ui;
u32 ui_num, ui_den;
@@ -346,7 +446,7 @@ static bool generic_init(struct intel_dsi_device *dsi)
if (mipi_config->target_burst_mode_freq <
computed_ddr) {
DRM_ERROR("Burst mode freq is less than computed\n");
- return false;
+ return NULL;
}
burst_mode_ratio = DIV_ROUND_UP(
@@ -356,7 +456,7 @@ static bool generic_init(struct intel_dsi_device *dsi)
pclk = DIV_ROUND_UP(pclk * burst_mode_ratio, 100);
} else {
DRM_ERROR("Burst mode target is not set\n");
- return false;
+ return NULL;
}
} else
burst_mode_ratio = 100;
@@ -557,71 +657,13 @@ static bool generic_init(struct intel_dsi_device *dsi)
intel_dsi->panel_off_delay = pps->panel_off_delay / 10;
intel_dsi->panel_pwr_cycle_delay = pps->panel_power_cycle_delay / 10;
- return true;
-}
-
-static void generic_panel_reset(struct intel_dsi_device *dsi)
-{
- struct intel_dsi *intel_dsi = container_of(dsi, struct intel_dsi, dev);
- struct drm_device *dev = intel_dsi->base.base.dev;
- struct drm_i915_private *dev_priv = dev->dev_private;
-
- char *sequence = dev_priv->vbt.dsi.sequence[MIPI_SEQ_ASSERT_RESET];
-
- generic_exec_sequence(intel_dsi, sequence);
-
- sequence = dev_priv->vbt.dsi.sequence[MIPI_SEQ_INIT_OTP];
- generic_exec_sequence(intel_dsi, sequence);
-}
-
-static void generic_disable_panel_power(struct intel_dsi_device *dsi)
-{
- struct intel_dsi *intel_dsi = container_of(dsi, struct intel_dsi, dev);
- struct drm_device *dev = intel_dsi->base.base.dev;
- struct drm_i915_private *dev_priv = dev->dev_private;
-
- char *sequence = dev_priv->vbt.dsi.sequence[MIPI_SEQ_DEASSERT_RESET];
-
- generic_exec_sequence(intel_dsi, sequence);
-}
-
-static void generic_enable(struct intel_dsi_device *dsi)
-{
- struct intel_dsi *intel_dsi = container_of(dsi, struct intel_dsi, dev);
- struct drm_device *dev = intel_dsi->base.base.dev;
- struct drm_i915_private *dev_priv = dev->dev_private;
+ /* This is cheating a bit with the cleanup. */
+ vbt_panel = devm_kzalloc(dev->dev, sizeof(*vbt_panel), GFP_KERNEL);
- char *sequence = dev_priv->vbt.dsi.sequence[MIPI_SEQ_DISPLAY_ON];
+ vbt_panel->intel_dsi = intel_dsi;
+ drm_panel_init(&vbt_panel->panel);
+ vbt_panel->panel.funcs = &vbt_panel_funcs;
+ drm_panel_add(&vbt_panel->panel);
- generic_exec_sequence(intel_dsi, sequence);
+ return &vbt_panel->panel;
}
-
-static void generic_disable(struct intel_dsi_device *dsi)
-{
- struct intel_dsi *intel_dsi = container_of(dsi, struct intel_dsi, dev);
- struct drm_device *dev = intel_dsi->base.base.dev;
- struct drm_i915_private *dev_priv = dev->dev_private;
-
- char *sequence = dev_priv->vbt.dsi.sequence[MIPI_SEQ_DISPLAY_OFF];
-
- generic_exec_sequence(intel_dsi, sequence);
-}
-
-static struct drm_display_mode *generic_get_modes(struct intel_dsi_device *dsi)
-{
- struct intel_dsi *intel_dsi = container_of(dsi, struct intel_dsi, dev);
- struct drm_device *dev = intel_dsi->base.base.dev;
- struct drm_i915_private *dev_priv = dev->dev_private;
-
- dev_priv->vbt.lfp_lvds_vbt_mode->type |= DRM_MODE_TYPE_PREFERRED;
- return dev_priv->vbt.lfp_lvds_vbt_mode;
-}
-
-struct intel_dsi_dev_ops vbt_generic_dsi_display_ops = {
- .init = generic_init,
- .panel_reset = generic_panel_reset,
- .disable_panel_power = generic_disable_panel_power,
- .enable = generic_enable,
- .disable = generic_disable,
- .get_modes = generic_get_modes,
-};
--
2.1.4
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