* [PATCH 1/4 v2] drm/tve200: Add DT bindings
@ 2017-08-20 10:05 ` Linus Walleij
0 siblings, 0 replies; 12+ messages in thread
From: Linus Walleij @ 2017-08-20 10:05 UTC (permalink / raw)
To: dri-devel, Eric Anholt, Daniel Vetter, Jani Nikula, Sean Paul
Cc: devicetree, linux-arm-kernel
This adds device tree bindings for the Faraday TVE200 IP block.
This IP block is present in the Gemini ARM SoC and also in some
Grain Media GMxxxx SoCs.
Cc: devicetree@vger.kernel.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
ChangeLog v1->v2:
- Fix display port bindings: list required endpoint.
- Fix the example to include an endpoint.
---
.../devicetree/bindings/display/faraday,tve200.txt | 54 ++++++++++++++++++++++
1 file changed, 54 insertions(+)
create mode 100644 Documentation/devicetree/bindings/display/faraday,tve200.txt
diff --git a/Documentation/devicetree/bindings/display/faraday,tve200.txt b/Documentation/devicetree/bindings/display/faraday,tve200.txt
new file mode 100644
index 000000000000..82e3bc0b7485
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/faraday,tve200.txt
@@ -0,0 +1,54 @@
+* Faraday TV Encoder TVE200
+
+Required properties:
+
+- compatible: must be one of:
+ "faraday,tve200"
+ "cortina,gemini-tvc", "faraday,tve200"
+
+- reg: base address and size of the control registers block
+
+- interrupts: contains an interrupt specifier for the interrupt
+ line from the TVE200
+
+- clock-names: should contain "PCLK" for the clock line clocking the
+ silicon and "TVE" for the 27MHz clock to the video driver
+
+- clocks: contains phandle and clock specifier pairs for the entries
+ in the clock-names property. See
+ Documentation/devicetree/bindings/clock/clock-bindings.txt
+
+Optional properties:
+
+- resets: contains the reset line phandle for the block
+
+Required sub-nodes:
+
+- port: describes LCD panel signals, following the common binding
+ for video transmitter interfaces; see
+ Documentation/devicetree/bindings/media/video-interfaces.txt
+ This port should have the properties:
+ reg = <0>;
+ It should have one endpoint connected to a remote endpoint where
+ the display is connected.
+
+Example:
+
+display-controller@6a000000 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "faraday,tve200";
+ reg = <0x6a000000 0x1000>;
+ interrupts = <13 IRQ_TYPE_EDGE_RISING>;
+ resets = <&syscon GEMINI_RESET_TVC>;
+ clocks = <&syscon GEMINI_CLK_GATE_TVC>,
+ <&syscon GEMINI_CLK_TVC>;
+ clock-names = "PCLK", "TVE";
+
+ port@0 {
+ reg = <0>;
+ display_out: endpoint {
+ remote-endpoint = <&panel_in>;
+ };
+ };
+};
--
2.13.5
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^ permalink raw reply related [flat|nested] 12+ messages in thread
* [PATCH 1/4 v2] drm/tve200: Add DT bindings
@ 2017-08-20 10:05 ` Linus Walleij
0 siblings, 0 replies; 12+ messages in thread
From: Linus Walleij @ 2017-08-20 10:05 UTC (permalink / raw)
To: linux-arm-kernel
This adds device tree bindings for the Faraday TVE200 IP block.
This IP block is present in the Gemini ARM SoC and also in some
Grain Media GMxxxx SoCs.
Cc: devicetree at vger.kernel.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
ChangeLog v1->v2:
- Fix display port bindings: list required endpoint.
- Fix the example to include an endpoint.
---
.../devicetree/bindings/display/faraday,tve200.txt | 54 ++++++++++++++++++++++
1 file changed, 54 insertions(+)
create mode 100644 Documentation/devicetree/bindings/display/faraday,tve200.txt
diff --git a/Documentation/devicetree/bindings/display/faraday,tve200.txt b/Documentation/devicetree/bindings/display/faraday,tve200.txt
new file mode 100644
index 000000000000..82e3bc0b7485
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/faraday,tve200.txt
@@ -0,0 +1,54 @@
+* Faraday TV Encoder TVE200
+
+Required properties:
+
+- compatible: must be one of:
+ "faraday,tve200"
+ "cortina,gemini-tvc", "faraday,tve200"
+
+- reg: base address and size of the control registers block
+
+- interrupts: contains an interrupt specifier for the interrupt
+ line from the TVE200
+
+- clock-names: should contain "PCLK" for the clock line clocking the
+ silicon and "TVE" for the 27MHz clock to the video driver
+
+- clocks: contains phandle and clock specifier pairs for the entries
+ in the clock-names property. See
+ Documentation/devicetree/bindings/clock/clock-bindings.txt
+
+Optional properties:
+
+- resets: contains the reset line phandle for the block
+
+Required sub-nodes:
+
+- port: describes LCD panel signals, following the common binding
+ for video transmitter interfaces; see
+ Documentation/devicetree/bindings/media/video-interfaces.txt
+ This port should have the properties:
+ reg = <0>;
+ It should have one endpoint connected to a remote endpoint where
+ the display is connected.
+
+Example:
+
+display-controller at 6a000000 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "faraday,tve200";
+ reg = <0x6a000000 0x1000>;
+ interrupts = <13 IRQ_TYPE_EDGE_RISING>;
+ resets = <&syscon GEMINI_RESET_TVC>;
+ clocks = <&syscon GEMINI_CLK_GATE_TVC>,
+ <&syscon GEMINI_CLK_TVC>;
+ clock-names = "PCLK", "TVE";
+
+ port at 0 {
+ reg = <0>;
+ display_out: endpoint {
+ remote-endpoint = <&panel_in>;
+ };
+ };
+};
--
2.13.5
^ permalink raw reply related [flat|nested] 12+ messages in thread
* [PATCH 2/4 v2] drm/tve200: Add new driver for TVE200
2017-08-20 10:05 ` Linus Walleij
@ 2017-08-20 10:05 ` Linus Walleij
-1 siblings, 0 replies; 12+ messages in thread
From: Linus Walleij @ 2017-08-20 10:05 UTC (permalink / raw)
To: linux-arm-kernel
This adds a new DRM driver for the Faraday Technology TVE200
block. This "TV Encoder" encodes a ITU-T BT.656 stream and can
be found in the StorLink SL3516 (later Cortina Systems CS3516)
as well as the Grain Media GM8180.
I do not have definitive word from anyone at Faraday that this
IP block is theirs, but it bears the hallmark of their 3-digit
version code (200) and is used in two SoCs from completely
different companies. (Grain Media was fully owned by Faraday
until it was transferred to NovoTek this january, and
Faraday did lots of work on the StorLink SoCs.)
The D-Link DIR-685 uses this in connection with the Ilitek
ILI9322 panel driver that supports BT.656 input, while the
GM8180 apparently has been used with the Cirrus Logic CS4954
digital video encoder. The oldest user seems to be
something called Techwall 2835.
This driver is heavily inspired by Eric Anholt's PL111
driver and therefore I have mentioned all the ancestor authors
in the header file.
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
ChangeLog v1->v2:
- Drop .dpms helper as this is no longer needed.
- Fix some spelling fireing->firing
- Constify and staticize mode_config_funcs
- Delete .dumb_destroy and .dumb_map_offset as those are
now handled by the core
- Reassign drm_gem_cma_free_object() from
.gem_free_object to .gem_free_object_unlocked
as we're not using the lock.
- Add CMA helper defaults to vtable entries
.gem_prime_vmap, .gem_prime_vunmap, .gem_prime_mmap
as this is necessary for e.g splash screens
- Switch a bunch of messages from dev_err() to
DRM_DEBUG_KMS() in the display check routine.
---
Documentation/gpu/index.rst | 1 +
Documentation/gpu/tve200.rst | 6 +
MAINTAINERS | 6 +
drivers/gpu/drm/Kconfig | 2 +
drivers/gpu/drm/Makefile | 1 +
drivers/gpu/drm/tve200/Kconfig | 15 ++
drivers/gpu/drm/tve200/Makefile | 5 +
drivers/gpu/drm/tve200/tve200_connector.c | 125 +++++++++++
drivers/gpu/drm/tve200/tve200_display.c | 344 ++++++++++++++++++++++++++++++
drivers/gpu/drm/tve200/tve200_drm.h | 129 +++++++++++
drivers/gpu/drm/tve200/tve200_drv.c | 278 ++++++++++++++++++++++++
11 files changed, 912 insertions(+)
create mode 100644 Documentation/gpu/tve200.rst
create mode 100644 drivers/gpu/drm/tve200/Kconfig
create mode 100644 drivers/gpu/drm/tve200/Makefile
create mode 100644 drivers/gpu/drm/tve200/tve200_connector.c
create mode 100644 drivers/gpu/drm/tve200/tve200_display.c
create mode 100644 drivers/gpu/drm/tve200/tve200_drm.h
create mode 100644 drivers/gpu/drm/tve200/tve200_drv.c
diff --git a/Documentation/gpu/index.rst b/Documentation/gpu/index.rst
index 35d673bf9b56..c36586dad29d 100644
--- a/Documentation/gpu/index.rst
+++ b/Documentation/gpu/index.rst
@@ -15,6 +15,7 @@ Linux GPU Driver Developer's Guide
pl111
tegra
tinydrm
+ tve200
vc4
vga-switcheroo
vgaarbiter
diff --git a/Documentation/gpu/tve200.rst b/Documentation/gpu/tve200.rst
new file mode 100644
index 000000000000..69b17b324e12
--- /dev/null
+++ b/Documentation/gpu/tve200.rst
@@ -0,0 +1,6 @@
+==================================
+ drm/tve200 Faraday TV Encoder 200
+==================================
+
+.. kernel-doc:: drivers/gpu/drm/tve200/tve200_drv.c
+ :doc: Faraday TV Encoder 200
diff --git a/MAINTAINERS b/MAINTAINERS
index e87cba115ea4..c3d42d68253a 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -4305,6 +4305,12 @@ T: git git://anongit.freedesktop.org/drm/drm-misc
S: Maintained
F: drivers/gpu/drm/bochs/
+DRM DRIVER FOR FARADAY TVE200 TV ENCODER
+M: Linus Walleij <linus.walleij@linaro.org>
+T: git git://anongit.freedesktop.org/drm/drm-misc
+S: Maintained
+F: drivers/gpu/drm/tve200/
+
DRM DRIVER FOR INTEL I810 VIDEO CARDS
S: Orphan / Obsolete
F: drivers/gpu/drm/i810/
diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
index 83cb2a88c204..c5e1a8409285 100644
--- a/drivers/gpu/drm/Kconfig
+++ b/drivers/gpu/drm/Kconfig
@@ -278,6 +278,8 @@ source "drivers/gpu/drm/tinydrm/Kconfig"
source "drivers/gpu/drm/pl111/Kconfig"
+source "drivers/gpu/drm/tve200/Kconfig"
+
# Keep legacy drivers last
menuconfig DRM_LEGACY
diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
index 24a066e1841c..cc81813e2238 100644
--- a/drivers/gpu/drm/Makefile
+++ b/drivers/gpu/drm/Makefile
@@ -100,3 +100,4 @@ obj-$(CONFIG_DRM_ZTE) += zte/
obj-$(CONFIG_DRM_MXSFB) += mxsfb/
obj-$(CONFIG_DRM_TINYDRM) += tinydrm/
obj-$(CONFIG_DRM_PL111) += pl111/
+obj-$(CONFIG_DRM_TVE200) += tve200/
diff --git a/drivers/gpu/drm/tve200/Kconfig b/drivers/gpu/drm/tve200/Kconfig
new file mode 100644
index 000000000000..21d9841ddb88
--- /dev/null
+++ b/drivers/gpu/drm/tve200/Kconfig
@@ -0,0 +1,15 @@
+config DRM_TVE200
+ tristate "DRM Support for Faraday TV Encoder TVE200"
+ depends on DRM
+ depends on CMA
+ depends on ARM || COMPILE_TEST
+ depends on OF
+ select DRM_PANEL
+ select DRM_KMS_HELPER
+ select DRM_KMS_CMA_HELPER
+ select DRM_GEM_CMA_HELPER
+ select VT_HW_CONSOLE_BINDING if FRAMEBUFFER_CONSOLE
+ help
+ Choose this option for DRM support for the Faraday TV Encoder
+ TVE200 Controller.
+ If M is selected the module will be called tve200_drm.
diff --git a/drivers/gpu/drm/tve200/Makefile b/drivers/gpu/drm/tve200/Makefile
new file mode 100644
index 000000000000..a9dba54f7ee5
--- /dev/null
+++ b/drivers/gpu/drm/tve200/Makefile
@@ -0,0 +1,5 @@
+tve200_drm-y += tve200_connector.o \
+ tve200_display.o \
+ tve200_drv.o
+
+obj-$(CONFIG_DRM_TVE200) += tve200_drm.o
diff --git a/drivers/gpu/drm/tve200/tve200_connector.c b/drivers/gpu/drm/tve200/tve200_connector.c
new file mode 100644
index 000000000000..5e6c20b57d6d
--- /dev/null
+++ b/drivers/gpu/drm/tve200/tve200_connector.c
@@ -0,0 +1,125 @@
+/*
+ * Copyright (C) 2017 Linus Walleij <linus.walleij@linaro.org>
+ * Parts of this file were based on sources as follows:
+ *
+ * Copyright (C) 2006-2008 Intel Corporation
+ * Copyright (C) 2007 Amos Lee <amos_lee@storlinksemi.com>
+ * Copyright (C) 2007 Dave Airlie <airlied@linux.ie>
+ * Copyright (C) 2011 Texas Instruments
+ * Copyright (C) 2017 Eric Anholt
+ *
+ * This program is free software and is provided to you under the terms of the
+ * GNU General Public License version 2 as published by the Free Software
+ * Foundation, and any use by you of this program is subject to the terms of
+ * such GNU licence.
+ */
+
+/**
+ * tve200_drm_connector.c
+ * Implementation of the connector functions for the Faraday TV Encoder
+ */
+#include <linux/version.h>
+#include <linux/shmem_fs.h>
+#include <linux/dma-buf.h>
+
+#include <drm/drmP.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_of.h>
+#include <drm/drm_panel.h>
+
+#include "tve200_drm.h"
+
+static void tve200_connector_destroy(struct drm_connector *connector)
+{
+ struct tve200_drm_connector *tve200con =
+ to_tve200_connector(connector);
+
+ if (tve200con->panel)
+ drm_panel_detach(tve200con->panel);
+
+ drm_connector_unregister(connector);
+ drm_connector_cleanup(connector);
+}
+
+static enum drm_connector_status tve200_connector_detect(struct drm_connector
+ *connector, bool force)
+{
+ struct tve200_drm_connector *tve200con =
+ to_tve200_connector(connector);
+
+ return (tve200con->panel ?
+ connector_status_connected :
+ connector_status_disconnected);
+}
+
+static int tve200_connector_helper_get_modes(struct drm_connector *connector)
+{
+ struct tve200_drm_connector *tve200con =
+ to_tve200_connector(connector);
+
+ if (!tve200con->panel)
+ return 0;
+
+ return drm_panel_get_modes(tve200con->panel);
+}
+
+static const struct drm_connector_funcs connector_funcs = {
+ .fill_modes = drm_helper_probe_single_connector_modes,
+ .destroy = tve200_connector_destroy,
+ .detect = tve200_connector_detect,
+ .reset = drm_atomic_helper_connector_reset,
+ .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
+ .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
+};
+
+static const struct drm_connector_helper_funcs connector_helper_funcs = {
+ .get_modes = tve200_connector_helper_get_modes,
+};
+
+/*
+ * Walks the OF graph to find the panel node and then asks DRM to look
+ * up the panel.
+ */
+static struct drm_panel *tve200_get_panel(struct device *dev)
+{
+ struct device_node *endpoint, *panel_node;
+ struct device_node *np = dev->of_node;
+ struct drm_panel *panel;
+
+ endpoint = of_graph_get_next_endpoint(np, NULL);
+ if (!endpoint) {
+ dev_err(dev, "no endpoint to fetch panel\n");
+ return NULL;
+ }
+
+ /* Don't proceed if we have an endpoint but no panel_node tied to it */
+ panel_node = of_graph_get_remote_port_parent(endpoint);
+ of_node_put(endpoint);
+ if (!panel_node) {
+ dev_err(dev, "no valid panel node\n");
+ return NULL;
+ }
+
+ panel = of_drm_find_panel(panel_node);
+ of_node_put(panel_node);
+
+ return panel;
+}
+
+int tve200_connector_init(struct drm_device *dev)
+{
+ struct tve200_drm_dev_private *priv = dev->dev_private;
+ struct tve200_drm_connector *tve200con = &priv->connector;
+ struct drm_connector *connector = &tve200con->connector;
+
+ drm_connector_init(dev, connector, &connector_funcs,
+ DRM_MODE_CONNECTOR_DPI);
+ drm_connector_helper_add(connector, &connector_helper_funcs);
+
+ tve200con->panel = tve200_get_panel(dev->dev);
+ if (tve200con->panel)
+ drm_panel_attach(tve200con->panel, connector);
+
+ return 0;
+}
diff --git a/drivers/gpu/drm/tve200/tve200_display.c b/drivers/gpu/drm/tve200/tve200_display.c
new file mode 100644
index 000000000000..37fb333331f3
--- /dev/null
+++ b/drivers/gpu/drm/tve200/tve200_display.c
@@ -0,0 +1,344 @@
+/*
+ * Copyright (C) 2017 Linus Walleij <linus.walleij@linaro.org>
+ * Parts of this file were based on sources as follows:
+ *
+ * Copyright (C) 2006-2008 Intel Corporation
+ * Copyright (C) 2007 Amos Lee <amos_lee@storlinksemi.com>
+ * Copyright (C) 2007 Dave Airlie <airlied@linux.ie>
+ * Copyright (C) 2011 Texas Instruments
+ * Copyright (C) 2017 Eric Anholt
+ *
+ * This program is free software and is provided to you under the terms of the
+ * GNU General Public License version 2 as published by the Free Software
+ * Foundation, and any use by you of this program is subject to the terms of
+ * such GNU licence.
+ */
+#include <linux/clk.h>
+#include <linux/version.h>
+#include <linux/dma-buf.h>
+#include <linux/of_graph.h>
+
+#include <drm/drmP.h>
+#include <drm/drm_panel.h>
+#include <drm/drm_gem_cma_helper.h>
+#include <drm/drm_fb_cma_helper.h>
+
+#include "tve200_drm.h"
+
+irqreturn_t tve200_irq(int irq, void *data)
+{
+ struct tve200_drm_dev_private *priv = data;
+ u32 stat;
+ u32 val;
+
+ stat = readl(priv->regs + TVE200_INT_STAT);
+
+ if (!stat)
+ return IRQ_NONE;
+
+ /*
+ * Vblank IRQ
+ *
+ * The hardware is a bit tilted: the line stays high after clearing
+ * the vblank IRQ, firing many more interrupts. We counter this
+ * by toggling the IRQ back and forth from firing at vblank and
+ * firing at start of active image, which works around the problem
+ * since those occur strictly in sequence, and we get two IRQs for each
+ * frame, one at start of Vblank (that we make call into the CRTC) and
+ * another one at the start of the image (that we discard).
+ */
+ if (stat & TVE200_INT_V_STATUS) {
+ val = readl(priv->regs + TVE200_CTRL);
+ /* We have an actual start of vsync */
+ if (!(val & TVE200_VSTSTYPE_BITS)) {
+ drm_crtc_handle_vblank(&priv->pipe.crtc);
+ /* Toggle trigger to start of active image */
+ val |= TVE200_VSTSTYPE_VAI;
+ } else {
+ /* Toggle trigger back to start of vsync */
+ val &= ~TVE200_VSTSTYPE_BITS;
+ }
+ writel(val, priv->regs + TVE200_CTRL);
+ } else
+ dev_err(priv->drm->dev, "stray IRQ %08x\n", stat);
+
+ /* Clear the interrupt once done */
+ writel(stat, priv->regs + TVE200_INT_CLR);
+
+ return IRQ_HANDLED;
+}
+
+static int tve200_display_check(struct drm_simple_display_pipe *pipe,
+ struct drm_plane_state *pstate,
+ struct drm_crtc_state *cstate)
+{
+ const struct drm_display_mode *mode = &cstate->mode;
+ struct drm_framebuffer *old_fb = pipe->plane.state->fb;
+ struct drm_framebuffer *fb = pstate->fb;
+
+ /*
+ * We support these specific resolutions and nothing else.
+ */
+ if (!(mode->hdisplay == 352 && mode->vdisplay == 240) && /* SIF(525) */
+ !(mode->hdisplay == 352 && mode->vdisplay == 288) && /* CIF(625) */
+ !(mode->hdisplay == 640 && mode->vdisplay == 480) && /* VGA */
+ !(mode->hdisplay == 720 && mode->vdisplay == 480) && /* D1 */
+ !(mode->hdisplay == 720 && mode->vdisplay == 576)) { /* D1 */
+ DRM_DEBUG_KMS("unsupported display mode (%u x %u)\n",
+ mode->hdisplay, mode->vdisplay);
+ return -EINVAL;
+ }
+
+ if (fb) {
+ u32 offset = drm_fb_cma_get_gem_addr(fb, pstate, 0);
+
+ /* FB base address must be dword aligned. */
+ if (offset & 3) {
+ DRM_DEBUG_KMS("FB not 32-bit aligned\n");
+ return -EINVAL;
+ }
+
+ /*
+ * There's no pitch register, the mode's hdisplay
+ * controls this.
+ */
+ if (fb->pitches[0] != mode->hdisplay * fb->format->cpp[0]) {
+ DRM_DEBUG_KMS("can't handle pitches\n");
+ return -EINVAL;
+ }
+
+ /*
+ * We can't change the FB format in a flicker-free
+ * manner (and only update it during CRTC enable).
+ */
+ if (old_fb && old_fb->format != fb->format)
+ cstate->mode_changed = true;
+ }
+
+ return 0;
+}
+
+static void tve200_display_enable(struct drm_simple_display_pipe *pipe,
+ struct drm_crtc_state *cstate)
+{
+ struct drm_crtc *crtc = &pipe->crtc;
+ struct drm_plane *plane = &pipe->plane;
+ struct drm_device *drm = crtc->dev;
+ struct tve200_drm_dev_private *priv = drm->dev_private;
+ const struct drm_display_mode *mode = &cstate->mode;
+ struct drm_framebuffer *fb = plane->state->fb;
+ struct drm_connector *connector = &priv->connector.connector;
+ u32 format = fb->format->format;
+ u32 ctrl1 = 0;
+
+ clk_prepare_enable(priv->clk);
+
+ /* Function 1 */
+ ctrl1 |= TVE200_CTRL_CSMODE;
+ /* Interlace mode for CCIR656: parameterize? */
+ ctrl1 |= TVE200_CTRL_NONINTERLACE;
+ /* 32 words per burst */
+ ctrl1 |= TVE200_CTRL_BURST_32_WORDS;
+ /* 16 retries */
+ ctrl1 |= TVE200_CTRL_RETRYCNT_16;
+ /* NTSC mode: parametrize? */
+ ctrl1 |= TVE200_CTRL_NTSC;
+
+ /* Vsync IRQ at start of Vsync at first */
+ ctrl1 |= TVE200_VSTSTYPE_VSYNC;
+
+ if (connector->display_info.bus_flags & DRM_BUS_FLAG_PIXDATA_NEGEDGE)
+ ctrl1 |= TVE200_CTRL_TVCLKP;
+
+ if ((mode->hdisplay == 352 && mode->vdisplay == 240) || /* SIF(525) */
+ (mode->hdisplay == 352 && mode->vdisplay == 288)) { /* CIF(625) */
+ ctrl1 |= TVE200_CTRL_IPRESOL_CIF;
+ dev_info(drm->dev, "CIF mode\n");
+ } else if (mode->hdisplay == 640 && mode->vdisplay == 480) {
+ ctrl1 |= TVE200_CTRL_IPRESOL_VGA;
+ dev_info(drm->dev, "VGA mode\n");
+ } else if ((mode->hdisplay == 720 && mode->vdisplay == 480) ||
+ (mode->hdisplay == 720 && mode->vdisplay == 576)) {
+ ctrl1 |= TVE200_CTRL_IPRESOL_D1;
+ dev_info(drm->dev, "D1 mode\n");
+ }
+
+ if (format & DRM_FORMAT_BIG_ENDIAN) {
+ ctrl1 |= TVE200_CTRL_BBBP;
+ format &= ~DRM_FORMAT_BIG_ENDIAN;
+ }
+
+ switch (format) {
+ case DRM_FORMAT_XRGB8888:
+ ctrl1 |= TVE200_IPDMOD_RGB888;
+ break;
+ case DRM_FORMAT_RGB565:
+ ctrl1 |= TVE200_IPDMOD_RGB565;
+ break;
+ case DRM_FORMAT_XRGB1555:
+ ctrl1 |= TVE200_IPDMOD_RGB555;
+ break;
+ case DRM_FORMAT_XBGR8888:
+ ctrl1 |= TVE200_IPDMOD_RGB888 | TVE200_BGR;
+ break;
+ case DRM_FORMAT_BGR565:
+ ctrl1 |= TVE200_IPDMOD_RGB565 | TVE200_BGR;
+ break;
+ case DRM_FORMAT_XBGR1555:
+ ctrl1 |= TVE200_IPDMOD_RGB555 | TVE200_BGR;
+ break;
+ case DRM_FORMAT_YUYV:
+ ctrl1 |= TVE200_IPDMOD_YUV422;
+ ctrl1 |= TVE200_CTRL_YCBCRODR_CR0Y1CB0Y0;
+ break;
+ case DRM_FORMAT_YVYU:
+ ctrl1 |= TVE200_IPDMOD_YUV422;
+ ctrl1 |= TVE200_CTRL_YCBCRODR_CB0Y1CR0Y0;
+ break;
+ case DRM_FORMAT_UYVY:
+ ctrl1 |= TVE200_IPDMOD_YUV422;
+ ctrl1 |= TVE200_CTRL_YCBCRODR_Y1CR0Y0CB0;
+ break;
+ case DRM_FORMAT_VYUY:
+ ctrl1 |= TVE200_IPDMOD_YUV422;
+ ctrl1 |= TVE200_CTRL_YCBCRODR_Y1CB0Y0CR0;
+ break;
+ case DRM_FORMAT_YUV420:
+ ctrl1 |= TVE200_CTRL_YUV420;
+ ctrl1 |= TVE200_IPDMOD_YUV420;
+ break;
+ default:
+ dev_err(drm->dev, "Unknown FB format 0x%08x\n",
+ fb->format->format);
+ break;
+ }
+
+ ctrl1 |= TVE200_TVEEN;
+
+ drm_panel_prepare(priv->connector.panel);
+
+ /* Turn it on */
+ writel(ctrl1, priv->regs + TVE200_CTRL);
+
+ drm_panel_enable(priv->connector.panel);
+
+ drm_crtc_vblank_on(crtc);
+}
+
+void tve200_display_disable(struct drm_simple_display_pipe *pipe)
+{
+ struct drm_crtc *crtc = &pipe->crtc;
+ struct drm_device *drm = crtc->dev;
+ struct tve200_drm_dev_private *priv = drm->dev_private;
+
+ drm_crtc_vblank_off(crtc);
+
+ drm_panel_disable(priv->connector.panel);
+
+ /* Disable and Power Down */
+ writel(0, priv->regs + TVE200_CTRL);
+
+ drm_panel_unprepare(priv->connector.panel);
+
+ clk_disable_unprepare(priv->clk);
+}
+
+static void tve200_display_update(struct drm_simple_display_pipe *pipe,
+ struct drm_plane_state *old_pstate)
+{
+ struct drm_crtc *crtc = &pipe->crtc;
+ struct drm_device *drm = crtc->dev;
+ struct tve200_drm_dev_private *priv = drm->dev_private;
+ struct drm_pending_vblank_event *event = crtc->state->event;
+ struct drm_plane *plane = &pipe->plane;
+ struct drm_plane_state *pstate = plane->state;
+ struct drm_framebuffer *fb = pstate->fb;
+
+ if (fb) {
+ /* For RGB, the Y component is used as base address */
+ writel(drm_fb_cma_get_gem_addr(fb, pstate, 0),
+ priv->regs + TVE200_Y_FRAME_BASE_ADDR);
+
+ /* For three plane YUV we need two more addresses */
+ if (fb->format->format == DRM_FORMAT_YUV420) {
+ writel(drm_fb_cma_get_gem_addr(fb, pstate, 1),
+ priv->regs + TVE200_U_FRAME_BASE_ADDR);
+ writel(drm_fb_cma_get_gem_addr(fb, pstate, 2),
+ priv->regs + TVE200_V_FRAME_BASE_ADDR);
+ }
+ }
+
+ if (event) {
+ crtc->state->event = NULL;
+
+ spin_lock_irq(&crtc->dev->event_lock);
+ if (crtc->state->active && drm_crtc_vblank_get(crtc) == 0)
+ drm_crtc_arm_vblank_event(crtc, event);
+ else
+ drm_crtc_send_vblank_event(crtc, event);
+ spin_unlock_irq(&crtc->dev->event_lock);
+ }
+}
+
+int tve200_enable_vblank(struct drm_device *drm, unsigned int crtc)
+{
+ struct tve200_drm_dev_private *priv = drm->dev_private;
+
+ writel(TVE200_INT_V_STATUS, priv->regs + TVE200_INT_EN);
+ return 0;
+}
+
+void tve200_disable_vblank(struct drm_device *drm, unsigned int crtc)
+{
+ struct tve200_drm_dev_private *priv = drm->dev_private;
+
+ writel(0, priv->regs + TVE200_INT_EN);
+}
+
+static int tve200_display_prepare_fb(struct drm_simple_display_pipe *pipe,
+ struct drm_plane_state *plane_state)
+{
+ return drm_fb_cma_prepare_fb(&pipe->plane, plane_state);
+}
+
+const struct drm_simple_display_pipe_funcs tve200_display_funcs = {
+ .check = tve200_display_check,
+ .enable = tve200_display_enable,
+ .disable = tve200_display_disable,
+ .update = tve200_display_update,
+ .prepare_fb = tve200_display_prepare_fb,
+};
+
+int tve200_display_init(struct drm_device *drm)
+{
+ struct tve200_drm_dev_private *priv = drm->dev_private;
+ int ret;
+ static const u32 formats[] = {
+ DRM_FORMAT_XRGB8888,
+ DRM_FORMAT_XBGR8888,
+ DRM_FORMAT_RGB565,
+ DRM_FORMAT_BGR565,
+ DRM_FORMAT_XRGB1555,
+ DRM_FORMAT_XBGR1555,
+ /*
+ * The controller actually supports any YCbCr ordering,
+ * for packed YCbCr. This just lists the orderings that
+ * DRM supports.
+ */
+ DRM_FORMAT_YUYV,
+ DRM_FORMAT_YVYU,
+ DRM_FORMAT_UYVY,
+ DRM_FORMAT_VYUY,
+ /* This uses three planes */
+ DRM_FORMAT_YUV420,
+ };
+
+ ret = drm_simple_display_pipe_init(drm, &priv->pipe,
+ &tve200_display_funcs,
+ formats, ARRAY_SIZE(formats),
+ &priv->connector.connector);
+ if (ret)
+ return ret;
+
+ return 0;
+}
diff --git a/drivers/gpu/drm/tve200/tve200_drm.h b/drivers/gpu/drm/tve200/tve200_drm.h
new file mode 100644
index 000000000000..f00fc47a6bd1
--- /dev/null
+++ b/drivers/gpu/drm/tve200/tve200_drm.h
@@ -0,0 +1,129 @@
+/*
+ * Copyright (C) 2017 Linus Walleij <linus.walleij@linaro.org>
+ * Parts of this file were based on sources as follows:
+ *
+ * Copyright (C) 2006-2008 Intel Corporation
+ * Copyright (C) 2007 Amos Lee <amos_lee@storlinksemi.com>
+ * Copyright (C) 2007 Dave Airlie <airlied@linux.ie>
+ * Copyright (C) 2011 Texas Instruments
+ * Copyright (C) 2017 Eric Anholt
+ *
+ * This program is free software and is provided to you under the terms of the
+ * GNU General Public License version 2 as published by the Free Software
+ * Foundation, and any use by you of this program is subject to the terms of
+ * such GNU licence.
+ */
+
+#ifndef _TVE200_DRM_H_
+#define _TVE200_DRM_H_
+
+/* Bits 2-31 are valid physical base addresses */
+#define TVE200_Y_FRAME_BASE_ADDR 0x00
+#define TVE200_U_FRAME_BASE_ADDR 0x04
+#define TVE200_V_FRAME_BASE_ADDR 0x08
+
+#define TVE200_INT_EN 0x0C
+#define TVE200_INT_CLR 0x10
+#define TVE200_INT_STAT 0x14
+#define TVE200_INT_BUS_ERR BIT(7)
+#define TVE200_INT_V_STATUS BIT(6) /* vertical blank */
+#define TVE200_INT_V_NEXT_FRAME BIT(5)
+#define TVE200_INT_U_NEXT_FRAME BIT(4)
+#define TVE200_INT_Y_NEXT_FRAME BIT(3)
+#define TVE200_INT_V_FIFO_UNDERRUN BIT(2)
+#define TVE200_INT_U_FIFO_UNDERRUN BIT(1)
+#define TVE200_INT_Y_FIFO_UNDERRUN BIT(0)
+#define TVE200_FIFO_UNDERRUNS (TVE200_INT_V_FIFO_UNDERRUN | \
+ TVE200_INT_U_FIFO_UNDERRUN | \
+ TVE200_INT_Y_FIFO_UNDERRUN)
+
+#define TVE200_CTRL 0x18
+#define TVE200_CTRL_YUV420 BIT(31)
+#define TVE200_CTRL_CSMODE BIT(30)
+#define TVE200_CTRL_NONINTERLACE BIT(28) /* 0 = non-interlace CCIR656 */
+#define TVE200_CTRL_TVCLKP BIT(27) /* Inverted clock phase */
+/* Bits 24..26 define the burst size after arbitration on the bus */
+#define TVE200_CTRL_BURST_4_WORDS (0 << 24)
+#define TVE200_CTRL_BURST_8_WORDS (1 << 24)
+#define TVE200_CTRL_BURST_16_WORDS (2 << 24)
+#define TVE200_CTRL_BURST_32_WORDS (3 << 24)
+#define TVE200_CTRL_BURST_64_WORDS (4 << 24)
+#define TVE200_CTRL_BURST_128_WORDS (5 << 24)
+#define TVE200_CTRL_BURST_256_WORDS (6 << 24)
+#define TVE200_CTRL_BURST_0_WORDS (7 << 24) /* ? */
+/*
+ * Bits 16..23 is the retry count*16 before issueing a new AHB transfer
+ * on the AHB bus.
+ */
+#define TVE200_CTRL_RETRYCNT_MASK GENMASK(23, 16)
+#define TVE200_CTRL_RETRYCNT_16 (1 << 16)
+#define TVE200_CTRL_BBBP BIT(15) /* 0 = little-endian */
+/* Bits 12..14 define the YCbCr ordering */
+#define TVE200_CTRL_YCBCRODR_CB0Y0CR0Y1 (0 << 12)
+#define TVE200_CTRL_YCBCRODR_Y0CB0Y1CR0 (1 << 12)
+#define TVE200_CTRL_YCBCRODR_CR0Y0CB0Y1 (2 << 12)
+#define TVE200_CTRL_YCBCRODR_Y1CB0Y0CR0 (3 << 12)
+#define TVE200_CTRL_YCBCRODR_CR0Y1CB0Y0 (4 << 12)
+#define TVE200_CTRL_YCBCRODR_Y1CR0Y0CB0 (5 << 12)
+#define TVE200_CTRL_YCBCRODR_CB0Y1CR0Y0 (6 << 12)
+#define TVE200_CTRL_YCBCRODR_Y0CR0Y1CB0 (7 << 12)
+/* Bits 10..11 define the input resolution (framebuffer size) */
+#define TVE200_CTRL_IPRESOL_CIF (0 << 10)
+#define TVE200_CTRL_IPRESOL_VGA (1 << 10)
+#define TVE200_CTRL_IPRESOL_D1 (2 << 10)
+#define TVE200_CTRL_NTSC BIT(9) /* 0 = PAL, 1 = NTSC */
+#define TVE200_CTRL_INTERLACE BIT(8) /* 1 = interlace, only for D1 */
+#define TVE200_IPDMOD_RGB555 (0 << 6) /* TVE200_CTRL_YUV420 = 0 */
+#define TVE200_IPDMOD_RGB565 (1 << 6)
+#define TVE200_IPDMOD_RGB888 (2 << 6)
+#define TVE200_IPDMOD_YUV420 (2 << 6) /* TVE200_CTRL_YUV420 = 1 */
+#define TVE200_IPDMOD_YUV422 (3 << 6)
+/* Bits 4 & 5 define when to fire the vblank IRQ */
+#define TVE200_VSTSTYPE_VSYNC (0 << 4) /* start of vsync */
+#define TVE200_VSTSTYPE_VBP (1 << 4) /* start of v back porch */
+#define TVE200_VSTSTYPE_VAI (2 << 4) /* start of v active image */
+#define TVE200_VSTSTYPE_VFP (3 << 4) /* start of v front porch */
+#define TVE200_VSTSTYPE_BITS (BIT(4) | BIT(5))
+#define TVE200_BGR BIT(1) /* 0 = RGB, 1 = BGR */
+#define TVE200_TVEEN BIT(0) /* Enable TVE block */
+
+#define TVE200_CTRL_2 0x1c
+#define TVE200_CTRL_3 0x20
+
+#define TVE200_CTRL_4 0x24
+#define TVE200_CTRL_4_RESET BIT(0) /* triggers reset of TVE200 */
+
+#include <drm/drm_gem.h>
+#include <drm/drm_simple_kms_helper.h>
+
+struct tve200_drm_connector {
+ struct drm_connector connector;
+ struct drm_panel *panel;
+};
+
+struct tve200_drm_dev_private {
+ struct drm_device *drm;
+
+ struct tve200_drm_connector connector;
+ struct drm_simple_display_pipe pipe;
+ struct drm_fbdev_cma *fbdev;
+
+ void *regs;
+ struct clk *pclk;
+ struct clk *clk;
+};
+
+#define to_tve200_connector(x) \
+ container_of(x, struct tve200_drm_connector, connector)
+
+int tve200_display_init(struct drm_device *dev);
+int tve200_enable_vblank(struct drm_device *drm, unsigned int crtc);
+void tve200_disable_vblank(struct drm_device *drm, unsigned int crtc);
+irqreturn_t tve200_irq(int irq, void *data);
+int tve200_connector_init(struct drm_device *dev);
+int tve200_encoder_init(struct drm_device *dev);
+int tve200_dumb_create(struct drm_file *file_priv,
+ struct drm_device *dev,
+ struct drm_mode_create_dumb *args);
+
+#endif /* _TVE200_DRM_H_ */
diff --git a/drivers/gpu/drm/tve200/tve200_drv.c b/drivers/gpu/drm/tve200/tve200_drv.c
new file mode 100644
index 000000000000..fe742106db4e
--- /dev/null
+++ b/drivers/gpu/drm/tve200/tve200_drv.c
@@ -0,0 +1,278 @@
+/*
+ * Copyright (C) 2017 Linus Walleij <linus.walleij@linaro.org>
+ * Parts of this file were based on sources as follows:
+ *
+ * Copyright (C) 2006-2008 Intel Corporation
+ * Copyright (C) 2007 Amos Lee <amos_lee@storlinksemi.com>
+ * Copyright (C) 2007 Dave Airlie <airlied@linux.ie>
+ * Copyright (C) 2011 Texas Instruments
+ * Copyright (C) 2017 Eric Anholt
+ *
+ * This program is free software and is provided to you under the terms of the
+ * GNU General Public License version 2 as published by the Free Software
+ * Foundation, and any use by you of this program is subject to the terms of
+ * such GNU licence.
+ */
+
+/**
+ * DOC: Faraday TV Encoder TVE200 DRM Driver
+ *
+ * The Faraday TV Encoder TVE200 is also known as the Gemini TV Interface
+ * Controller (TVC) and is found in the Gemini Chipset from Storlink
+ * Semiconductor (later Storm Semiconductor, later Cortina Systems)
+ * but also in the Grain Media GM8180 chipset. On the Gemini the module
+ * is connected to 8 data lines and a single clock line, comprising an
+ * 8-bit BT.656 interface.
+ *
+ * This is a very basic YUV display driver. The datasheet specifies that
+ * it supports the ITU BT.656 standard. It requires a 27 MHz clock which is
+ * the hallmark of any TV encoder supporting both PAL and NTSC.
+ *
+ * This driver exposes a standard KMS interface for this TV encoder.
+ */
+
+#include <linux/clk.h>
+#include <linux/dma-buf.h>
+#include <linux/irq.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/shmem_fs.h>
+#include <linux/slab.h>
+#include <linux/version.h>
+
+#include <drm/drmP.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_gem_cma_helper.h>
+#include <drm/drm_fb_cma_helper.h>
+#include <drm/drm_panel.h>
+
+#include "tve200_drm.h"
+
+#define DRIVER_DESC "DRM module for Faraday TVE200"
+
+static const struct drm_mode_config_funcs mode_config_funcs = {
+ .fb_create = drm_fb_cma_create,
+ .atomic_check = drm_atomic_helper_check,
+ .atomic_commit = drm_atomic_helper_commit,
+};
+
+static int tve200_modeset_init(struct drm_device *dev)
+{
+ struct drm_mode_config *mode_config;
+ struct tve200_drm_dev_private *priv = dev->dev_private;
+ int ret = 0;
+
+ drm_mode_config_init(dev);
+ mode_config = &dev->mode_config;
+ mode_config->funcs = &mode_config_funcs;
+ mode_config->min_width = 352;
+ mode_config->max_width = 720;
+ mode_config->min_height = 240;
+ mode_config->max_height = 576;
+
+ ret = tve200_connector_init(dev);
+ if (ret) {
+ dev_err(dev->dev, "Failed to create tve200_drm_connector\n");
+ goto out_config;
+ }
+
+ /*
+ * Don't actually attach if we didn't find a drm_panel
+ * attached to us.
+ */
+ if (!priv->connector.panel) {
+ dev_info(dev->dev,
+ "deferring due to lack of DRM panel device\n");
+ ret = -EPROBE_DEFER;
+ goto out_config;
+ }
+ dev_info(dev->dev, "attached to panel %s\n",
+ dev_name(priv->connector.panel->dev));
+
+ ret = tve200_display_init(dev);
+ if (ret) {
+ dev_err(dev->dev, "failed to init display\n");
+ goto out_config;
+ }
+
+ ret = drm_vblank_init(dev, 1);
+ if (ret) {
+ dev_err(dev->dev, "failed to init vblank\n");
+ goto out_config;
+ }
+
+ drm_mode_config_reset(dev);
+
+ /*
+ * Passing in 16 here will make the RGB656 mode the default
+ * Passing in 32 will use XRGB8888 mode
+ */
+ priv->fbdev = drm_fbdev_cma_init(dev, 16,
+ dev->mode_config.num_connector);
+ drm_kms_helper_poll_init(dev);
+
+ goto finish;
+
+out_config:
+ drm_mode_config_cleanup(dev);
+finish:
+ return ret;
+}
+
+DEFINE_DRM_GEM_CMA_FOPS(drm_fops);
+
+static void tve200_lastclose(struct drm_device *dev)
+{
+ struct tve200_drm_dev_private *priv = dev->dev_private;
+
+ drm_fbdev_cma_restore_mode(priv->fbdev);
+}
+
+static struct drm_driver tve200_drm_driver = {
+ .driver_features =
+ DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME | DRIVER_ATOMIC,
+ .lastclose = tve200_lastclose,
+ .ioctls = NULL,
+ .fops = &drm_fops,
+ .name = "tve200",
+ .desc = DRIVER_DESC,
+ .date = "20170703",
+ .major = 1,
+ .minor = 0,
+ .patchlevel = 0,
+ .dumb_create = drm_gem_cma_dumb_create,
+ .gem_free_object_unlocked = drm_gem_cma_free_object,
+ .gem_vm_ops = &drm_gem_cma_vm_ops,
+
+ .enable_vblank = tve200_enable_vblank,
+ .disable_vblank = tve200_disable_vblank,
+
+ .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
+ .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
+ .gem_prime_import = drm_gem_prime_import,
+ .gem_prime_export = drm_gem_prime_export,
+ .gem_prime_get_sg_table = drm_gem_cma_prime_get_sg_table,
+ .gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table,
+ .gem_prime_vmap = drm_gem_cma_prime_vmap,
+ .gem_prime_vunmap = drm_gem_cma_prime_vunmap,
+ .gem_prime_mmap = drm_gem_cma_prime_mmap,
+};
+
+static int tve200_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct tve200_drm_dev_private *priv;
+ struct drm_device *drm;
+ struct resource *res;
+ int irq;
+ int ret;
+
+ priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ drm = drm_dev_alloc(&tve200_drm_driver, dev);
+ if (IS_ERR(drm))
+ return PTR_ERR(drm);
+ platform_set_drvdata(pdev, drm);
+ priv->drm = drm;
+ drm->dev_private = priv;
+
+ /* Clock the silicon so we can access the registers */
+ priv->pclk = devm_clk_get(dev, "PCLK");
+ if (IS_ERR(priv->pclk)) {
+ dev_err(dev, "unable to get PCLK\n");
+ ret = PTR_ERR(priv->pclk);
+ goto dev_unref;
+ }
+ ret = clk_prepare_enable(priv->pclk);
+ if (ret) {
+ dev_err(dev, "failed to enable PCLK\n");
+ goto dev_unref;
+ }
+
+ /* This clock is for the pixels (27MHz) */
+ priv->clk = devm_clk_get(dev, "TVE");
+ if (IS_ERR(priv->clk)) {
+ dev_err(dev, "unable to get TVE clock\n");
+ ret = PTR_ERR(priv->clk);
+ goto clk_disable;
+ }
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ priv->regs = devm_ioremap_resource(dev, res);
+ if (!priv->regs) {
+ dev_err(dev, "%s failed mmio\n", __func__);
+ ret = -EINVAL;
+ goto clk_disable;
+ }
+
+ irq = platform_get_irq(pdev, 0);
+ if (!irq) {
+ ret = -EINVAL;
+ goto clk_disable;
+ }
+
+ /* turn off interrupts before requesting the irq */
+ writel(0, priv->regs + TVE200_INT_EN);
+
+ ret = devm_request_irq(dev, irq, tve200_irq, 0, "tve200", priv);
+ if (ret) {
+ dev_err(dev, "failed to request irq %d\n", ret);
+ goto clk_disable;
+ }
+
+ ret = tve200_modeset_init(drm);
+ if (ret)
+ goto clk_disable;
+
+ ret = drm_dev_register(drm, 0);
+ if (ret < 0)
+ goto clk_disable;
+
+ return 0;
+
+clk_disable:
+ clk_disable_unprepare(priv->pclk);
+dev_unref:
+ drm_dev_unref(drm);
+ return ret;
+}
+
+static int tve200_remove(struct platform_device *pdev)
+{
+ struct drm_device *drm = platform_get_drvdata(pdev);
+ struct tve200_drm_dev_private *priv = drm->dev_private;
+
+ drm_dev_unregister(drm);
+ if (priv->fbdev)
+ drm_fbdev_cma_fini(priv->fbdev);
+ drm_mode_config_cleanup(drm);
+ clk_disable_unprepare(priv->pclk);
+ drm_dev_unref(drm);
+
+ return 0;
+}
+
+static const struct of_device_id tve200_of_match[] = {
+ {
+ .compatible = "faraday,tve200",
+ },
+ {},
+};
+
+static struct platform_driver tve200_driver = {
+ .driver = {
+ .name = "tve200",
+ .of_match_table = of_match_ptr(tve200_of_match),
+ },
+ .probe = tve200_probe,
+ .remove = tve200_remove,
+};
+module_platform_driver(tve200_driver);
+
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_AUTHOR("Linus Walleij <linus.walleij@linaro.org>");
+MODULE_LICENSE("GPL");
--
2.13.5
^ permalink raw reply related [flat|nested] 12+ messages in thread
* [PATCH 2/4 v2] drm/tve200: Add new driver for TVE200
@ 2017-08-20 10:05 ` Linus Walleij
0 siblings, 0 replies; 12+ messages in thread
From: Linus Walleij @ 2017-08-20 10:05 UTC (permalink / raw)
To: dri-devel, Eric Anholt, Daniel Vetter, Jani Nikula, Sean Paul
Cc: linux-arm-kernel
This adds a new DRM driver for the Faraday Technology TVE200
block. This "TV Encoder" encodes a ITU-T BT.656 stream and can
be found in the StorLink SL3516 (later Cortina Systems CS3516)
as well as the Grain Media GM8180.
I do not have definitive word from anyone at Faraday that this
IP block is theirs, but it bears the hallmark of their 3-digit
version code (200) and is used in two SoCs from completely
different companies. (Grain Media was fully owned by Faraday
until it was transferred to NovoTek this january, and
Faraday did lots of work on the StorLink SoCs.)
The D-Link DIR-685 uses this in connection with the Ilitek
ILI9322 panel driver that supports BT.656 input, while the
GM8180 apparently has been used with the Cirrus Logic CS4954
digital video encoder. The oldest user seems to be
something called Techwall 2835.
This driver is heavily inspired by Eric Anholt's PL111
driver and therefore I have mentioned all the ancestor authors
in the header file.
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
ChangeLog v1->v2:
- Drop .dpms helper as this is no longer needed.
- Fix some spelling fireing->firing
- Constify and staticize mode_config_funcs
- Delete .dumb_destroy and .dumb_map_offset as those are
now handled by the core
- Reassign drm_gem_cma_free_object() from
.gem_free_object to .gem_free_object_unlocked
as we're not using the lock.
- Add CMA helper defaults to vtable entries
.gem_prime_vmap, .gem_prime_vunmap, .gem_prime_mmap
as this is necessary for e.g splash screens
- Switch a bunch of messages from dev_err() to
DRM_DEBUG_KMS() in the display check routine.
---
Documentation/gpu/index.rst | 1 +
Documentation/gpu/tve200.rst | 6 +
MAINTAINERS | 6 +
drivers/gpu/drm/Kconfig | 2 +
drivers/gpu/drm/Makefile | 1 +
drivers/gpu/drm/tve200/Kconfig | 15 ++
drivers/gpu/drm/tve200/Makefile | 5 +
drivers/gpu/drm/tve200/tve200_connector.c | 125 +++++++++++
drivers/gpu/drm/tve200/tve200_display.c | 344 ++++++++++++++++++++++++++++++
drivers/gpu/drm/tve200/tve200_drm.h | 129 +++++++++++
drivers/gpu/drm/tve200/tve200_drv.c | 278 ++++++++++++++++++++++++
11 files changed, 912 insertions(+)
create mode 100644 Documentation/gpu/tve200.rst
create mode 100644 drivers/gpu/drm/tve200/Kconfig
create mode 100644 drivers/gpu/drm/tve200/Makefile
create mode 100644 drivers/gpu/drm/tve200/tve200_connector.c
create mode 100644 drivers/gpu/drm/tve200/tve200_display.c
create mode 100644 drivers/gpu/drm/tve200/tve200_drm.h
create mode 100644 drivers/gpu/drm/tve200/tve200_drv.c
diff --git a/Documentation/gpu/index.rst b/Documentation/gpu/index.rst
index 35d673bf9b56..c36586dad29d 100644
--- a/Documentation/gpu/index.rst
+++ b/Documentation/gpu/index.rst
@@ -15,6 +15,7 @@ Linux GPU Driver Developer's Guide
pl111
tegra
tinydrm
+ tve200
vc4
vga-switcheroo
vgaarbiter
diff --git a/Documentation/gpu/tve200.rst b/Documentation/gpu/tve200.rst
new file mode 100644
index 000000000000..69b17b324e12
--- /dev/null
+++ b/Documentation/gpu/tve200.rst
@@ -0,0 +1,6 @@
+==================================
+ drm/tve200 Faraday TV Encoder 200
+==================================
+
+.. kernel-doc:: drivers/gpu/drm/tve200/tve200_drv.c
+ :doc: Faraday TV Encoder 200
diff --git a/MAINTAINERS b/MAINTAINERS
index e87cba115ea4..c3d42d68253a 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -4305,6 +4305,12 @@ T: git git://anongit.freedesktop.org/drm/drm-misc
S: Maintained
F: drivers/gpu/drm/bochs/
+DRM DRIVER FOR FARADAY TVE200 TV ENCODER
+M: Linus Walleij <linus.walleij@linaro.org>
+T: git git://anongit.freedesktop.org/drm/drm-misc
+S: Maintained
+F: drivers/gpu/drm/tve200/
+
DRM DRIVER FOR INTEL I810 VIDEO CARDS
S: Orphan / Obsolete
F: drivers/gpu/drm/i810/
diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
index 83cb2a88c204..c5e1a8409285 100644
--- a/drivers/gpu/drm/Kconfig
+++ b/drivers/gpu/drm/Kconfig
@@ -278,6 +278,8 @@ source "drivers/gpu/drm/tinydrm/Kconfig"
source "drivers/gpu/drm/pl111/Kconfig"
+source "drivers/gpu/drm/tve200/Kconfig"
+
# Keep legacy drivers last
menuconfig DRM_LEGACY
diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
index 24a066e1841c..cc81813e2238 100644
--- a/drivers/gpu/drm/Makefile
+++ b/drivers/gpu/drm/Makefile
@@ -100,3 +100,4 @@ obj-$(CONFIG_DRM_ZTE) += zte/
obj-$(CONFIG_DRM_MXSFB) += mxsfb/
obj-$(CONFIG_DRM_TINYDRM) += tinydrm/
obj-$(CONFIG_DRM_PL111) += pl111/
+obj-$(CONFIG_DRM_TVE200) += tve200/
diff --git a/drivers/gpu/drm/tve200/Kconfig b/drivers/gpu/drm/tve200/Kconfig
new file mode 100644
index 000000000000..21d9841ddb88
--- /dev/null
+++ b/drivers/gpu/drm/tve200/Kconfig
@@ -0,0 +1,15 @@
+config DRM_TVE200
+ tristate "DRM Support for Faraday TV Encoder TVE200"
+ depends on DRM
+ depends on CMA
+ depends on ARM || COMPILE_TEST
+ depends on OF
+ select DRM_PANEL
+ select DRM_KMS_HELPER
+ select DRM_KMS_CMA_HELPER
+ select DRM_GEM_CMA_HELPER
+ select VT_HW_CONSOLE_BINDING if FRAMEBUFFER_CONSOLE
+ help
+ Choose this option for DRM support for the Faraday TV Encoder
+ TVE200 Controller.
+ If M is selected the module will be called tve200_drm.
diff --git a/drivers/gpu/drm/tve200/Makefile b/drivers/gpu/drm/tve200/Makefile
new file mode 100644
index 000000000000..a9dba54f7ee5
--- /dev/null
+++ b/drivers/gpu/drm/tve200/Makefile
@@ -0,0 +1,5 @@
+tve200_drm-y += tve200_connector.o \
+ tve200_display.o \
+ tve200_drv.o
+
+obj-$(CONFIG_DRM_TVE200) += tve200_drm.o
diff --git a/drivers/gpu/drm/tve200/tve200_connector.c b/drivers/gpu/drm/tve200/tve200_connector.c
new file mode 100644
index 000000000000..5e6c20b57d6d
--- /dev/null
+++ b/drivers/gpu/drm/tve200/tve200_connector.c
@@ -0,0 +1,125 @@
+/*
+ * Copyright (C) 2017 Linus Walleij <linus.walleij@linaro.org>
+ * Parts of this file were based on sources as follows:
+ *
+ * Copyright (C) 2006-2008 Intel Corporation
+ * Copyright (C) 2007 Amos Lee <amos_lee@storlinksemi.com>
+ * Copyright (C) 2007 Dave Airlie <airlied@linux.ie>
+ * Copyright (C) 2011 Texas Instruments
+ * Copyright (C) 2017 Eric Anholt
+ *
+ * This program is free software and is provided to you under the terms of the
+ * GNU General Public License version 2 as published by the Free Software
+ * Foundation, and any use by you of this program is subject to the terms of
+ * such GNU licence.
+ */
+
+/**
+ * tve200_drm_connector.c
+ * Implementation of the connector functions for the Faraday TV Encoder
+ */
+#include <linux/version.h>
+#include <linux/shmem_fs.h>
+#include <linux/dma-buf.h>
+
+#include <drm/drmP.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_of.h>
+#include <drm/drm_panel.h>
+
+#include "tve200_drm.h"
+
+static void tve200_connector_destroy(struct drm_connector *connector)
+{
+ struct tve200_drm_connector *tve200con =
+ to_tve200_connector(connector);
+
+ if (tve200con->panel)
+ drm_panel_detach(tve200con->panel);
+
+ drm_connector_unregister(connector);
+ drm_connector_cleanup(connector);
+}
+
+static enum drm_connector_status tve200_connector_detect(struct drm_connector
+ *connector, bool force)
+{
+ struct tve200_drm_connector *tve200con =
+ to_tve200_connector(connector);
+
+ return (tve200con->panel ?
+ connector_status_connected :
+ connector_status_disconnected);
+}
+
+static int tve200_connector_helper_get_modes(struct drm_connector *connector)
+{
+ struct tve200_drm_connector *tve200con =
+ to_tve200_connector(connector);
+
+ if (!tve200con->panel)
+ return 0;
+
+ return drm_panel_get_modes(tve200con->panel);
+}
+
+static const struct drm_connector_funcs connector_funcs = {
+ .fill_modes = drm_helper_probe_single_connector_modes,
+ .destroy = tve200_connector_destroy,
+ .detect = tve200_connector_detect,
+ .reset = drm_atomic_helper_connector_reset,
+ .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
+ .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
+};
+
+static const struct drm_connector_helper_funcs connector_helper_funcs = {
+ .get_modes = tve200_connector_helper_get_modes,
+};
+
+/*
+ * Walks the OF graph to find the panel node and then asks DRM to look
+ * up the panel.
+ */
+static struct drm_panel *tve200_get_panel(struct device *dev)
+{
+ struct device_node *endpoint, *panel_node;
+ struct device_node *np = dev->of_node;
+ struct drm_panel *panel;
+
+ endpoint = of_graph_get_next_endpoint(np, NULL);
+ if (!endpoint) {
+ dev_err(dev, "no endpoint to fetch panel\n");
+ return NULL;
+ }
+
+ /* Don't proceed if we have an endpoint but no panel_node tied to it */
+ panel_node = of_graph_get_remote_port_parent(endpoint);
+ of_node_put(endpoint);
+ if (!panel_node) {
+ dev_err(dev, "no valid panel node\n");
+ return NULL;
+ }
+
+ panel = of_drm_find_panel(panel_node);
+ of_node_put(panel_node);
+
+ return panel;
+}
+
+int tve200_connector_init(struct drm_device *dev)
+{
+ struct tve200_drm_dev_private *priv = dev->dev_private;
+ struct tve200_drm_connector *tve200con = &priv->connector;
+ struct drm_connector *connector = &tve200con->connector;
+
+ drm_connector_init(dev, connector, &connector_funcs,
+ DRM_MODE_CONNECTOR_DPI);
+ drm_connector_helper_add(connector, &connector_helper_funcs);
+
+ tve200con->panel = tve200_get_panel(dev->dev);
+ if (tve200con->panel)
+ drm_panel_attach(tve200con->panel, connector);
+
+ return 0;
+}
diff --git a/drivers/gpu/drm/tve200/tve200_display.c b/drivers/gpu/drm/tve200/tve200_display.c
new file mode 100644
index 000000000000..37fb333331f3
--- /dev/null
+++ b/drivers/gpu/drm/tve200/tve200_display.c
@@ -0,0 +1,344 @@
+/*
+ * Copyright (C) 2017 Linus Walleij <linus.walleij@linaro.org>
+ * Parts of this file were based on sources as follows:
+ *
+ * Copyright (C) 2006-2008 Intel Corporation
+ * Copyright (C) 2007 Amos Lee <amos_lee@storlinksemi.com>
+ * Copyright (C) 2007 Dave Airlie <airlied@linux.ie>
+ * Copyright (C) 2011 Texas Instruments
+ * Copyright (C) 2017 Eric Anholt
+ *
+ * This program is free software and is provided to you under the terms of the
+ * GNU General Public License version 2 as published by the Free Software
+ * Foundation, and any use by you of this program is subject to the terms of
+ * such GNU licence.
+ */
+#include <linux/clk.h>
+#include <linux/version.h>
+#include <linux/dma-buf.h>
+#include <linux/of_graph.h>
+
+#include <drm/drmP.h>
+#include <drm/drm_panel.h>
+#include <drm/drm_gem_cma_helper.h>
+#include <drm/drm_fb_cma_helper.h>
+
+#include "tve200_drm.h"
+
+irqreturn_t tve200_irq(int irq, void *data)
+{
+ struct tve200_drm_dev_private *priv = data;
+ u32 stat;
+ u32 val;
+
+ stat = readl(priv->regs + TVE200_INT_STAT);
+
+ if (!stat)
+ return IRQ_NONE;
+
+ /*
+ * Vblank IRQ
+ *
+ * The hardware is a bit tilted: the line stays high after clearing
+ * the vblank IRQ, firing many more interrupts. We counter this
+ * by toggling the IRQ back and forth from firing at vblank and
+ * firing at start of active image, which works around the problem
+ * since those occur strictly in sequence, and we get two IRQs for each
+ * frame, one at start of Vblank (that we make call into the CRTC) and
+ * another one at the start of the image (that we discard).
+ */
+ if (stat & TVE200_INT_V_STATUS) {
+ val = readl(priv->regs + TVE200_CTRL);
+ /* We have an actual start of vsync */
+ if (!(val & TVE200_VSTSTYPE_BITS)) {
+ drm_crtc_handle_vblank(&priv->pipe.crtc);
+ /* Toggle trigger to start of active image */
+ val |= TVE200_VSTSTYPE_VAI;
+ } else {
+ /* Toggle trigger back to start of vsync */
+ val &= ~TVE200_VSTSTYPE_BITS;
+ }
+ writel(val, priv->regs + TVE200_CTRL);
+ } else
+ dev_err(priv->drm->dev, "stray IRQ %08x\n", stat);
+
+ /* Clear the interrupt once done */
+ writel(stat, priv->regs + TVE200_INT_CLR);
+
+ return IRQ_HANDLED;
+}
+
+static int tve200_display_check(struct drm_simple_display_pipe *pipe,
+ struct drm_plane_state *pstate,
+ struct drm_crtc_state *cstate)
+{
+ const struct drm_display_mode *mode = &cstate->mode;
+ struct drm_framebuffer *old_fb = pipe->plane.state->fb;
+ struct drm_framebuffer *fb = pstate->fb;
+
+ /*
+ * We support these specific resolutions and nothing else.
+ */
+ if (!(mode->hdisplay == 352 && mode->vdisplay == 240) && /* SIF(525) */
+ !(mode->hdisplay == 352 && mode->vdisplay == 288) && /* CIF(625) */
+ !(mode->hdisplay == 640 && mode->vdisplay == 480) && /* VGA */
+ !(mode->hdisplay == 720 && mode->vdisplay == 480) && /* D1 */
+ !(mode->hdisplay == 720 && mode->vdisplay == 576)) { /* D1 */
+ DRM_DEBUG_KMS("unsupported display mode (%u x %u)\n",
+ mode->hdisplay, mode->vdisplay);
+ return -EINVAL;
+ }
+
+ if (fb) {
+ u32 offset = drm_fb_cma_get_gem_addr(fb, pstate, 0);
+
+ /* FB base address must be dword aligned. */
+ if (offset & 3) {
+ DRM_DEBUG_KMS("FB not 32-bit aligned\n");
+ return -EINVAL;
+ }
+
+ /*
+ * There's no pitch register, the mode's hdisplay
+ * controls this.
+ */
+ if (fb->pitches[0] != mode->hdisplay * fb->format->cpp[0]) {
+ DRM_DEBUG_KMS("can't handle pitches\n");
+ return -EINVAL;
+ }
+
+ /*
+ * We can't change the FB format in a flicker-free
+ * manner (and only update it during CRTC enable).
+ */
+ if (old_fb && old_fb->format != fb->format)
+ cstate->mode_changed = true;
+ }
+
+ return 0;
+}
+
+static void tve200_display_enable(struct drm_simple_display_pipe *pipe,
+ struct drm_crtc_state *cstate)
+{
+ struct drm_crtc *crtc = &pipe->crtc;
+ struct drm_plane *plane = &pipe->plane;
+ struct drm_device *drm = crtc->dev;
+ struct tve200_drm_dev_private *priv = drm->dev_private;
+ const struct drm_display_mode *mode = &cstate->mode;
+ struct drm_framebuffer *fb = plane->state->fb;
+ struct drm_connector *connector = &priv->connector.connector;
+ u32 format = fb->format->format;
+ u32 ctrl1 = 0;
+
+ clk_prepare_enable(priv->clk);
+
+ /* Function 1 */
+ ctrl1 |= TVE200_CTRL_CSMODE;
+ /* Interlace mode for CCIR656: parameterize? */
+ ctrl1 |= TVE200_CTRL_NONINTERLACE;
+ /* 32 words per burst */
+ ctrl1 |= TVE200_CTRL_BURST_32_WORDS;
+ /* 16 retries */
+ ctrl1 |= TVE200_CTRL_RETRYCNT_16;
+ /* NTSC mode: parametrize? */
+ ctrl1 |= TVE200_CTRL_NTSC;
+
+ /* Vsync IRQ at start of Vsync at first */
+ ctrl1 |= TVE200_VSTSTYPE_VSYNC;
+
+ if (connector->display_info.bus_flags & DRM_BUS_FLAG_PIXDATA_NEGEDGE)
+ ctrl1 |= TVE200_CTRL_TVCLKP;
+
+ if ((mode->hdisplay == 352 && mode->vdisplay == 240) || /* SIF(525) */
+ (mode->hdisplay == 352 && mode->vdisplay == 288)) { /* CIF(625) */
+ ctrl1 |= TVE200_CTRL_IPRESOL_CIF;
+ dev_info(drm->dev, "CIF mode\n");
+ } else if (mode->hdisplay == 640 && mode->vdisplay == 480) {
+ ctrl1 |= TVE200_CTRL_IPRESOL_VGA;
+ dev_info(drm->dev, "VGA mode\n");
+ } else if ((mode->hdisplay == 720 && mode->vdisplay == 480) ||
+ (mode->hdisplay == 720 && mode->vdisplay == 576)) {
+ ctrl1 |= TVE200_CTRL_IPRESOL_D1;
+ dev_info(drm->dev, "D1 mode\n");
+ }
+
+ if (format & DRM_FORMAT_BIG_ENDIAN) {
+ ctrl1 |= TVE200_CTRL_BBBP;
+ format &= ~DRM_FORMAT_BIG_ENDIAN;
+ }
+
+ switch (format) {
+ case DRM_FORMAT_XRGB8888:
+ ctrl1 |= TVE200_IPDMOD_RGB888;
+ break;
+ case DRM_FORMAT_RGB565:
+ ctrl1 |= TVE200_IPDMOD_RGB565;
+ break;
+ case DRM_FORMAT_XRGB1555:
+ ctrl1 |= TVE200_IPDMOD_RGB555;
+ break;
+ case DRM_FORMAT_XBGR8888:
+ ctrl1 |= TVE200_IPDMOD_RGB888 | TVE200_BGR;
+ break;
+ case DRM_FORMAT_BGR565:
+ ctrl1 |= TVE200_IPDMOD_RGB565 | TVE200_BGR;
+ break;
+ case DRM_FORMAT_XBGR1555:
+ ctrl1 |= TVE200_IPDMOD_RGB555 | TVE200_BGR;
+ break;
+ case DRM_FORMAT_YUYV:
+ ctrl1 |= TVE200_IPDMOD_YUV422;
+ ctrl1 |= TVE200_CTRL_YCBCRODR_CR0Y1CB0Y0;
+ break;
+ case DRM_FORMAT_YVYU:
+ ctrl1 |= TVE200_IPDMOD_YUV422;
+ ctrl1 |= TVE200_CTRL_YCBCRODR_CB0Y1CR0Y0;
+ break;
+ case DRM_FORMAT_UYVY:
+ ctrl1 |= TVE200_IPDMOD_YUV422;
+ ctrl1 |= TVE200_CTRL_YCBCRODR_Y1CR0Y0CB0;
+ break;
+ case DRM_FORMAT_VYUY:
+ ctrl1 |= TVE200_IPDMOD_YUV422;
+ ctrl1 |= TVE200_CTRL_YCBCRODR_Y1CB0Y0CR0;
+ break;
+ case DRM_FORMAT_YUV420:
+ ctrl1 |= TVE200_CTRL_YUV420;
+ ctrl1 |= TVE200_IPDMOD_YUV420;
+ break;
+ default:
+ dev_err(drm->dev, "Unknown FB format 0x%08x\n",
+ fb->format->format);
+ break;
+ }
+
+ ctrl1 |= TVE200_TVEEN;
+
+ drm_panel_prepare(priv->connector.panel);
+
+ /* Turn it on */
+ writel(ctrl1, priv->regs + TVE200_CTRL);
+
+ drm_panel_enable(priv->connector.panel);
+
+ drm_crtc_vblank_on(crtc);
+}
+
+void tve200_display_disable(struct drm_simple_display_pipe *pipe)
+{
+ struct drm_crtc *crtc = &pipe->crtc;
+ struct drm_device *drm = crtc->dev;
+ struct tve200_drm_dev_private *priv = drm->dev_private;
+
+ drm_crtc_vblank_off(crtc);
+
+ drm_panel_disable(priv->connector.panel);
+
+ /* Disable and Power Down */
+ writel(0, priv->regs + TVE200_CTRL);
+
+ drm_panel_unprepare(priv->connector.panel);
+
+ clk_disable_unprepare(priv->clk);
+}
+
+static void tve200_display_update(struct drm_simple_display_pipe *pipe,
+ struct drm_plane_state *old_pstate)
+{
+ struct drm_crtc *crtc = &pipe->crtc;
+ struct drm_device *drm = crtc->dev;
+ struct tve200_drm_dev_private *priv = drm->dev_private;
+ struct drm_pending_vblank_event *event = crtc->state->event;
+ struct drm_plane *plane = &pipe->plane;
+ struct drm_plane_state *pstate = plane->state;
+ struct drm_framebuffer *fb = pstate->fb;
+
+ if (fb) {
+ /* For RGB, the Y component is used as base address */
+ writel(drm_fb_cma_get_gem_addr(fb, pstate, 0),
+ priv->regs + TVE200_Y_FRAME_BASE_ADDR);
+
+ /* For three plane YUV we need two more addresses */
+ if (fb->format->format == DRM_FORMAT_YUV420) {
+ writel(drm_fb_cma_get_gem_addr(fb, pstate, 1),
+ priv->regs + TVE200_U_FRAME_BASE_ADDR);
+ writel(drm_fb_cma_get_gem_addr(fb, pstate, 2),
+ priv->regs + TVE200_V_FRAME_BASE_ADDR);
+ }
+ }
+
+ if (event) {
+ crtc->state->event = NULL;
+
+ spin_lock_irq(&crtc->dev->event_lock);
+ if (crtc->state->active && drm_crtc_vblank_get(crtc) == 0)
+ drm_crtc_arm_vblank_event(crtc, event);
+ else
+ drm_crtc_send_vblank_event(crtc, event);
+ spin_unlock_irq(&crtc->dev->event_lock);
+ }
+}
+
+int tve200_enable_vblank(struct drm_device *drm, unsigned int crtc)
+{
+ struct tve200_drm_dev_private *priv = drm->dev_private;
+
+ writel(TVE200_INT_V_STATUS, priv->regs + TVE200_INT_EN);
+ return 0;
+}
+
+void tve200_disable_vblank(struct drm_device *drm, unsigned int crtc)
+{
+ struct tve200_drm_dev_private *priv = drm->dev_private;
+
+ writel(0, priv->regs + TVE200_INT_EN);
+}
+
+static int tve200_display_prepare_fb(struct drm_simple_display_pipe *pipe,
+ struct drm_plane_state *plane_state)
+{
+ return drm_fb_cma_prepare_fb(&pipe->plane, plane_state);
+}
+
+const struct drm_simple_display_pipe_funcs tve200_display_funcs = {
+ .check = tve200_display_check,
+ .enable = tve200_display_enable,
+ .disable = tve200_display_disable,
+ .update = tve200_display_update,
+ .prepare_fb = tve200_display_prepare_fb,
+};
+
+int tve200_display_init(struct drm_device *drm)
+{
+ struct tve200_drm_dev_private *priv = drm->dev_private;
+ int ret;
+ static const u32 formats[] = {
+ DRM_FORMAT_XRGB8888,
+ DRM_FORMAT_XBGR8888,
+ DRM_FORMAT_RGB565,
+ DRM_FORMAT_BGR565,
+ DRM_FORMAT_XRGB1555,
+ DRM_FORMAT_XBGR1555,
+ /*
+ * The controller actually supports any YCbCr ordering,
+ * for packed YCbCr. This just lists the orderings that
+ * DRM supports.
+ */
+ DRM_FORMAT_YUYV,
+ DRM_FORMAT_YVYU,
+ DRM_FORMAT_UYVY,
+ DRM_FORMAT_VYUY,
+ /* This uses three planes */
+ DRM_FORMAT_YUV420,
+ };
+
+ ret = drm_simple_display_pipe_init(drm, &priv->pipe,
+ &tve200_display_funcs,
+ formats, ARRAY_SIZE(formats),
+ &priv->connector.connector);
+ if (ret)
+ return ret;
+
+ return 0;
+}
diff --git a/drivers/gpu/drm/tve200/tve200_drm.h b/drivers/gpu/drm/tve200/tve200_drm.h
new file mode 100644
index 000000000000..f00fc47a6bd1
--- /dev/null
+++ b/drivers/gpu/drm/tve200/tve200_drm.h
@@ -0,0 +1,129 @@
+/*
+ * Copyright (C) 2017 Linus Walleij <linus.walleij@linaro.org>
+ * Parts of this file were based on sources as follows:
+ *
+ * Copyright (C) 2006-2008 Intel Corporation
+ * Copyright (C) 2007 Amos Lee <amos_lee@storlinksemi.com>
+ * Copyright (C) 2007 Dave Airlie <airlied@linux.ie>
+ * Copyright (C) 2011 Texas Instruments
+ * Copyright (C) 2017 Eric Anholt
+ *
+ * This program is free software and is provided to you under the terms of the
+ * GNU General Public License version 2 as published by the Free Software
+ * Foundation, and any use by you of this program is subject to the terms of
+ * such GNU licence.
+ */
+
+#ifndef _TVE200_DRM_H_
+#define _TVE200_DRM_H_
+
+/* Bits 2-31 are valid physical base addresses */
+#define TVE200_Y_FRAME_BASE_ADDR 0x00
+#define TVE200_U_FRAME_BASE_ADDR 0x04
+#define TVE200_V_FRAME_BASE_ADDR 0x08
+
+#define TVE200_INT_EN 0x0C
+#define TVE200_INT_CLR 0x10
+#define TVE200_INT_STAT 0x14
+#define TVE200_INT_BUS_ERR BIT(7)
+#define TVE200_INT_V_STATUS BIT(6) /* vertical blank */
+#define TVE200_INT_V_NEXT_FRAME BIT(5)
+#define TVE200_INT_U_NEXT_FRAME BIT(4)
+#define TVE200_INT_Y_NEXT_FRAME BIT(3)
+#define TVE200_INT_V_FIFO_UNDERRUN BIT(2)
+#define TVE200_INT_U_FIFO_UNDERRUN BIT(1)
+#define TVE200_INT_Y_FIFO_UNDERRUN BIT(0)
+#define TVE200_FIFO_UNDERRUNS (TVE200_INT_V_FIFO_UNDERRUN | \
+ TVE200_INT_U_FIFO_UNDERRUN | \
+ TVE200_INT_Y_FIFO_UNDERRUN)
+
+#define TVE200_CTRL 0x18
+#define TVE200_CTRL_YUV420 BIT(31)
+#define TVE200_CTRL_CSMODE BIT(30)
+#define TVE200_CTRL_NONINTERLACE BIT(28) /* 0 = non-interlace CCIR656 */
+#define TVE200_CTRL_TVCLKP BIT(27) /* Inverted clock phase */
+/* Bits 24..26 define the burst size after arbitration on the bus */
+#define TVE200_CTRL_BURST_4_WORDS (0 << 24)
+#define TVE200_CTRL_BURST_8_WORDS (1 << 24)
+#define TVE200_CTRL_BURST_16_WORDS (2 << 24)
+#define TVE200_CTRL_BURST_32_WORDS (3 << 24)
+#define TVE200_CTRL_BURST_64_WORDS (4 << 24)
+#define TVE200_CTRL_BURST_128_WORDS (5 << 24)
+#define TVE200_CTRL_BURST_256_WORDS (6 << 24)
+#define TVE200_CTRL_BURST_0_WORDS (7 << 24) /* ? */
+/*
+ * Bits 16..23 is the retry count*16 before issueing a new AHB transfer
+ * on the AHB bus.
+ */
+#define TVE200_CTRL_RETRYCNT_MASK GENMASK(23, 16)
+#define TVE200_CTRL_RETRYCNT_16 (1 << 16)
+#define TVE200_CTRL_BBBP BIT(15) /* 0 = little-endian */
+/* Bits 12..14 define the YCbCr ordering */
+#define TVE200_CTRL_YCBCRODR_CB0Y0CR0Y1 (0 << 12)
+#define TVE200_CTRL_YCBCRODR_Y0CB0Y1CR0 (1 << 12)
+#define TVE200_CTRL_YCBCRODR_CR0Y0CB0Y1 (2 << 12)
+#define TVE200_CTRL_YCBCRODR_Y1CB0Y0CR0 (3 << 12)
+#define TVE200_CTRL_YCBCRODR_CR0Y1CB0Y0 (4 << 12)
+#define TVE200_CTRL_YCBCRODR_Y1CR0Y0CB0 (5 << 12)
+#define TVE200_CTRL_YCBCRODR_CB0Y1CR0Y0 (6 << 12)
+#define TVE200_CTRL_YCBCRODR_Y0CR0Y1CB0 (7 << 12)
+/* Bits 10..11 define the input resolution (framebuffer size) */
+#define TVE200_CTRL_IPRESOL_CIF (0 << 10)
+#define TVE200_CTRL_IPRESOL_VGA (1 << 10)
+#define TVE200_CTRL_IPRESOL_D1 (2 << 10)
+#define TVE200_CTRL_NTSC BIT(9) /* 0 = PAL, 1 = NTSC */
+#define TVE200_CTRL_INTERLACE BIT(8) /* 1 = interlace, only for D1 */
+#define TVE200_IPDMOD_RGB555 (0 << 6) /* TVE200_CTRL_YUV420 = 0 */
+#define TVE200_IPDMOD_RGB565 (1 << 6)
+#define TVE200_IPDMOD_RGB888 (2 << 6)
+#define TVE200_IPDMOD_YUV420 (2 << 6) /* TVE200_CTRL_YUV420 = 1 */
+#define TVE200_IPDMOD_YUV422 (3 << 6)
+/* Bits 4 & 5 define when to fire the vblank IRQ */
+#define TVE200_VSTSTYPE_VSYNC (0 << 4) /* start of vsync */
+#define TVE200_VSTSTYPE_VBP (1 << 4) /* start of v back porch */
+#define TVE200_VSTSTYPE_VAI (2 << 4) /* start of v active image */
+#define TVE200_VSTSTYPE_VFP (3 << 4) /* start of v front porch */
+#define TVE200_VSTSTYPE_BITS (BIT(4) | BIT(5))
+#define TVE200_BGR BIT(1) /* 0 = RGB, 1 = BGR */
+#define TVE200_TVEEN BIT(0) /* Enable TVE block */
+
+#define TVE200_CTRL_2 0x1c
+#define TVE200_CTRL_3 0x20
+
+#define TVE200_CTRL_4 0x24
+#define TVE200_CTRL_4_RESET BIT(0) /* triggers reset of TVE200 */
+
+#include <drm/drm_gem.h>
+#include <drm/drm_simple_kms_helper.h>
+
+struct tve200_drm_connector {
+ struct drm_connector connector;
+ struct drm_panel *panel;
+};
+
+struct tve200_drm_dev_private {
+ struct drm_device *drm;
+
+ struct tve200_drm_connector connector;
+ struct drm_simple_display_pipe pipe;
+ struct drm_fbdev_cma *fbdev;
+
+ void *regs;
+ struct clk *pclk;
+ struct clk *clk;
+};
+
+#define to_tve200_connector(x) \
+ container_of(x, struct tve200_drm_connector, connector)
+
+int tve200_display_init(struct drm_device *dev);
+int tve200_enable_vblank(struct drm_device *drm, unsigned int crtc);
+void tve200_disable_vblank(struct drm_device *drm, unsigned int crtc);
+irqreturn_t tve200_irq(int irq, void *data);
+int tve200_connector_init(struct drm_device *dev);
+int tve200_encoder_init(struct drm_device *dev);
+int tve200_dumb_create(struct drm_file *file_priv,
+ struct drm_device *dev,
+ struct drm_mode_create_dumb *args);
+
+#endif /* _TVE200_DRM_H_ */
diff --git a/drivers/gpu/drm/tve200/tve200_drv.c b/drivers/gpu/drm/tve200/tve200_drv.c
new file mode 100644
index 000000000000..fe742106db4e
--- /dev/null
+++ b/drivers/gpu/drm/tve200/tve200_drv.c
@@ -0,0 +1,278 @@
+/*
+ * Copyright (C) 2017 Linus Walleij <linus.walleij@linaro.org>
+ * Parts of this file were based on sources as follows:
+ *
+ * Copyright (C) 2006-2008 Intel Corporation
+ * Copyright (C) 2007 Amos Lee <amos_lee@storlinksemi.com>
+ * Copyright (C) 2007 Dave Airlie <airlied@linux.ie>
+ * Copyright (C) 2011 Texas Instruments
+ * Copyright (C) 2017 Eric Anholt
+ *
+ * This program is free software and is provided to you under the terms of the
+ * GNU General Public License version 2 as published by the Free Software
+ * Foundation, and any use by you of this program is subject to the terms of
+ * such GNU licence.
+ */
+
+/**
+ * DOC: Faraday TV Encoder TVE200 DRM Driver
+ *
+ * The Faraday TV Encoder TVE200 is also known as the Gemini TV Interface
+ * Controller (TVC) and is found in the Gemini Chipset from Storlink
+ * Semiconductor (later Storm Semiconductor, later Cortina Systems)
+ * but also in the Grain Media GM8180 chipset. On the Gemini the module
+ * is connected to 8 data lines and a single clock line, comprising an
+ * 8-bit BT.656 interface.
+ *
+ * This is a very basic YUV display driver. The datasheet specifies that
+ * it supports the ITU BT.656 standard. It requires a 27 MHz clock which is
+ * the hallmark of any TV encoder supporting both PAL and NTSC.
+ *
+ * This driver exposes a standard KMS interface for this TV encoder.
+ */
+
+#include <linux/clk.h>
+#include <linux/dma-buf.h>
+#include <linux/irq.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/shmem_fs.h>
+#include <linux/slab.h>
+#include <linux/version.h>
+
+#include <drm/drmP.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_gem_cma_helper.h>
+#include <drm/drm_fb_cma_helper.h>
+#include <drm/drm_panel.h>
+
+#include "tve200_drm.h"
+
+#define DRIVER_DESC "DRM module for Faraday TVE200"
+
+static const struct drm_mode_config_funcs mode_config_funcs = {
+ .fb_create = drm_fb_cma_create,
+ .atomic_check = drm_atomic_helper_check,
+ .atomic_commit = drm_atomic_helper_commit,
+};
+
+static int tve200_modeset_init(struct drm_device *dev)
+{
+ struct drm_mode_config *mode_config;
+ struct tve200_drm_dev_private *priv = dev->dev_private;
+ int ret = 0;
+
+ drm_mode_config_init(dev);
+ mode_config = &dev->mode_config;
+ mode_config->funcs = &mode_config_funcs;
+ mode_config->min_width = 352;
+ mode_config->max_width = 720;
+ mode_config->min_height = 240;
+ mode_config->max_height = 576;
+
+ ret = tve200_connector_init(dev);
+ if (ret) {
+ dev_err(dev->dev, "Failed to create tve200_drm_connector\n");
+ goto out_config;
+ }
+
+ /*
+ * Don't actually attach if we didn't find a drm_panel
+ * attached to us.
+ */
+ if (!priv->connector.panel) {
+ dev_info(dev->dev,
+ "deferring due to lack of DRM panel device\n");
+ ret = -EPROBE_DEFER;
+ goto out_config;
+ }
+ dev_info(dev->dev, "attached to panel %s\n",
+ dev_name(priv->connector.panel->dev));
+
+ ret = tve200_display_init(dev);
+ if (ret) {
+ dev_err(dev->dev, "failed to init display\n");
+ goto out_config;
+ }
+
+ ret = drm_vblank_init(dev, 1);
+ if (ret) {
+ dev_err(dev->dev, "failed to init vblank\n");
+ goto out_config;
+ }
+
+ drm_mode_config_reset(dev);
+
+ /*
+ * Passing in 16 here will make the RGB656 mode the default
+ * Passing in 32 will use XRGB8888 mode
+ */
+ priv->fbdev = drm_fbdev_cma_init(dev, 16,
+ dev->mode_config.num_connector);
+ drm_kms_helper_poll_init(dev);
+
+ goto finish;
+
+out_config:
+ drm_mode_config_cleanup(dev);
+finish:
+ return ret;
+}
+
+DEFINE_DRM_GEM_CMA_FOPS(drm_fops);
+
+static void tve200_lastclose(struct drm_device *dev)
+{
+ struct tve200_drm_dev_private *priv = dev->dev_private;
+
+ drm_fbdev_cma_restore_mode(priv->fbdev);
+}
+
+static struct drm_driver tve200_drm_driver = {
+ .driver_features =
+ DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME | DRIVER_ATOMIC,
+ .lastclose = tve200_lastclose,
+ .ioctls = NULL,
+ .fops = &drm_fops,
+ .name = "tve200",
+ .desc = DRIVER_DESC,
+ .date = "20170703",
+ .major = 1,
+ .minor = 0,
+ .patchlevel = 0,
+ .dumb_create = drm_gem_cma_dumb_create,
+ .gem_free_object_unlocked = drm_gem_cma_free_object,
+ .gem_vm_ops = &drm_gem_cma_vm_ops,
+
+ .enable_vblank = tve200_enable_vblank,
+ .disable_vblank = tve200_disable_vblank,
+
+ .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
+ .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
+ .gem_prime_import = drm_gem_prime_import,
+ .gem_prime_export = drm_gem_prime_export,
+ .gem_prime_get_sg_table = drm_gem_cma_prime_get_sg_table,
+ .gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table,
+ .gem_prime_vmap = drm_gem_cma_prime_vmap,
+ .gem_prime_vunmap = drm_gem_cma_prime_vunmap,
+ .gem_prime_mmap = drm_gem_cma_prime_mmap,
+};
+
+static int tve200_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct tve200_drm_dev_private *priv;
+ struct drm_device *drm;
+ struct resource *res;
+ int irq;
+ int ret;
+
+ priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ drm = drm_dev_alloc(&tve200_drm_driver, dev);
+ if (IS_ERR(drm))
+ return PTR_ERR(drm);
+ platform_set_drvdata(pdev, drm);
+ priv->drm = drm;
+ drm->dev_private = priv;
+
+ /* Clock the silicon so we can access the registers */
+ priv->pclk = devm_clk_get(dev, "PCLK");
+ if (IS_ERR(priv->pclk)) {
+ dev_err(dev, "unable to get PCLK\n");
+ ret = PTR_ERR(priv->pclk);
+ goto dev_unref;
+ }
+ ret = clk_prepare_enable(priv->pclk);
+ if (ret) {
+ dev_err(dev, "failed to enable PCLK\n");
+ goto dev_unref;
+ }
+
+ /* This clock is for the pixels (27MHz) */
+ priv->clk = devm_clk_get(dev, "TVE");
+ if (IS_ERR(priv->clk)) {
+ dev_err(dev, "unable to get TVE clock\n");
+ ret = PTR_ERR(priv->clk);
+ goto clk_disable;
+ }
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ priv->regs = devm_ioremap_resource(dev, res);
+ if (!priv->regs) {
+ dev_err(dev, "%s failed mmio\n", __func__);
+ ret = -EINVAL;
+ goto clk_disable;
+ }
+
+ irq = platform_get_irq(pdev, 0);
+ if (!irq) {
+ ret = -EINVAL;
+ goto clk_disable;
+ }
+
+ /* turn off interrupts before requesting the irq */
+ writel(0, priv->regs + TVE200_INT_EN);
+
+ ret = devm_request_irq(dev, irq, tve200_irq, 0, "tve200", priv);
+ if (ret) {
+ dev_err(dev, "failed to request irq %d\n", ret);
+ goto clk_disable;
+ }
+
+ ret = tve200_modeset_init(drm);
+ if (ret)
+ goto clk_disable;
+
+ ret = drm_dev_register(drm, 0);
+ if (ret < 0)
+ goto clk_disable;
+
+ return 0;
+
+clk_disable:
+ clk_disable_unprepare(priv->pclk);
+dev_unref:
+ drm_dev_unref(drm);
+ return ret;
+}
+
+static int tve200_remove(struct platform_device *pdev)
+{
+ struct drm_device *drm = platform_get_drvdata(pdev);
+ struct tve200_drm_dev_private *priv = drm->dev_private;
+
+ drm_dev_unregister(drm);
+ if (priv->fbdev)
+ drm_fbdev_cma_fini(priv->fbdev);
+ drm_mode_config_cleanup(drm);
+ clk_disable_unprepare(priv->pclk);
+ drm_dev_unref(drm);
+
+ return 0;
+}
+
+static const struct of_device_id tve200_of_match[] = {
+ {
+ .compatible = "faraday,tve200",
+ },
+ {},
+};
+
+static struct platform_driver tve200_driver = {
+ .driver = {
+ .name = "tve200",
+ .of_match_table = of_match_ptr(tve200_of_match),
+ },
+ .probe = tve200_probe,
+ .remove = tve200_remove,
+};
+module_platform_driver(tve200_driver);
+
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_AUTHOR("Linus Walleij <linus.walleij@linaro.org>");
+MODULE_LICENSE("GPL");
--
2.13.5
_______________________________________________
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dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel
^ permalink raw reply related [flat|nested] 12+ messages in thread
* [PATCH 3/4 v2] ARM: dts: Add TVE200 to the Gemini SoC DTSI
2017-08-20 10:05 ` Linus Walleij
@ 2017-08-20 10:05 ` Linus Walleij
-1 siblings, 0 replies; 12+ messages in thread
From: Linus Walleij @ 2017-08-20 10:05 UTC (permalink / raw)
To: linux-arm-kernel
The Faraday TVE200 is present in the Gemini SoC, sometimes
under the name "TVC". Add it to the SoC DTSI file along with
its resources.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
ChangeLog v1->v2:
- Move the definition of cells to this file as it is part
of the IP binding.
- Rename node from "tvc" to "display-controller"
DRM developers: I will merge this patch through the ARM SoC
tree. It is only included in this series for completion.
---
arch/arm/boot/dts/gemini.dtsi | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/arch/arm/boot/dts/gemini.dtsi b/arch/arm/boot/dts/gemini.dtsi
index c68e8d430234..53baba4d9392 100644
--- a/arch/arm/boot/dts/gemini.dtsi
+++ b/arch/arm/boot/dts/gemini.dtsi
@@ -141,6 +141,12 @@
groups = "idegrp";
};
};
+ tvc_default_pins: pinctrl-tvc {
+ mux {
+ function = "tvc";
+ groups = "tvcgrp";
+ };
+ };
};
};
@@ -346,5 +352,20 @@
memcpy-bus-width = <32>;
#dma-cells = <2>;
};
+
+ display-controller at 6a000000 {
+ compatible = "cortina,gemini-tvc", "faraday,tve200";
+ reg = <0x6a000000 0x1000>;
+ interrupts = <13 IRQ_TYPE_EDGE_RISING>;
+ resets = <&syscon GEMINI_RESET_TVC>;
+ clocks = <&syscon GEMINI_CLK_GATE_TVC>,
+ <&syscon GEMINI_CLK_TVC>;
+ clock-names = "PCLK", "TVE";
+ pinctrl-names = "default";
+ pinctrl-0 = <&tvc_default_pins>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "disabled";
+ };
};
};
--
2.13.5
^ permalink raw reply related [flat|nested] 12+ messages in thread
* [PATCH 3/4 v2] ARM: dts: Add TVE200 to the Gemini SoC DTSI
@ 2017-08-20 10:05 ` Linus Walleij
0 siblings, 0 replies; 12+ messages in thread
From: Linus Walleij @ 2017-08-20 10:05 UTC (permalink / raw)
To: dri-devel, Eric Anholt, Daniel Vetter, Jani Nikula, Sean Paul
Cc: linux-arm-kernel
The Faraday TVE200 is present in the Gemini SoC, sometimes
under the name "TVC". Add it to the SoC DTSI file along with
its resources.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
ChangeLog v1->v2:
- Move the definition of cells to this file as it is part
of the IP binding.
- Rename node from "tvc" to "display-controller"
DRM developers: I will merge this patch through the ARM SoC
tree. It is only included in this series for completion.
---
arch/arm/boot/dts/gemini.dtsi | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/arch/arm/boot/dts/gemini.dtsi b/arch/arm/boot/dts/gemini.dtsi
index c68e8d430234..53baba4d9392 100644
--- a/arch/arm/boot/dts/gemini.dtsi
+++ b/arch/arm/boot/dts/gemini.dtsi
@@ -141,6 +141,12 @@
groups = "idegrp";
};
};
+ tvc_default_pins: pinctrl-tvc {
+ mux {
+ function = "tvc";
+ groups = "tvcgrp";
+ };
+ };
};
};
@@ -346,5 +352,20 @@
memcpy-bus-width = <32>;
#dma-cells = <2>;
};
+
+ display-controller@6a000000 {
+ compatible = "cortina,gemini-tvc", "faraday,tve200";
+ reg = <0x6a000000 0x1000>;
+ interrupts = <13 IRQ_TYPE_EDGE_RISING>;
+ resets = <&syscon GEMINI_RESET_TVC>;
+ clocks = <&syscon GEMINI_CLK_GATE_TVC>,
+ <&syscon GEMINI_CLK_TVC>;
+ clock-names = "PCLK", "TVE";
+ pinctrl-names = "default";
+ pinctrl-0 = <&tvc_default_pins>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "disabled";
+ };
};
};
--
2.13.5
_______________________________________________
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dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel
^ permalink raw reply related [flat|nested] 12+ messages in thread
* [PATCH 4/4 v2] ARM: dts: Add TVE/TVC and ILI9322 panel to DIR-685
2017-08-20 10:05 ` Linus Walleij
@ 2017-08-20 10:05 ` Linus Walleij
-1 siblings, 0 replies; 12+ messages in thread
From: Linus Walleij @ 2017-08-20 10:05 UTC (permalink / raw)
To: linux-arm-kernel
This adds the TVE200/TVC TV-encoder and the Ilitek ILI9322 panel
to the DIR-685 device tree.
This brings graphics to this funky router and it is possible to
even run a console on its tiny screen.
Incidentally this requires us to disable the access to the
parallel (NOR) flash, as the communication pins to the panel
are shared with the flash memory.
To access the flash, a separate kernel with the panel disabled
and the flash enabled should be booted. The pin control selecting
whether to use the lines cannot be altered at runtime due to
hardware constraints.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
ChangeLog v1->v2:
- Rename node from "tvc" to "display-controller"
DRM developers: I will merge this patch through the ARM SoC
tree. It is only included in this series for completion.
---
arch/arm/boot/dts/gemini-dlink-dir-685.dts | 75 +++++++++++++++++++++++++++++-
1 file changed, 74 insertions(+), 1 deletion(-)
diff --git a/arch/arm/boot/dts/gemini-dlink-dir-685.dts b/arch/arm/boot/dts/gemini-dlink-dir-685.dts
index 094a29624b8d..8e4037597a2c 100644
--- a/arch/arm/boot/dts/gemini-dlink-dir-685.dts
+++ b/arch/arm/boot/dts/gemini-dlink-dir-685.dts
@@ -46,6 +46,59 @@
};
};
+ vdisp: regulator {
+ compatible = "regulator-fixed";
+ regulator-name = "display-power";
+ regulator-min-microvolt = <3600000>;
+ regulator-max-microvolt = <3600000>;
+ /* Collides with LCD E */
+ gpio = <&gpio0 16 GPIO_ACTIVE_HIGH>;
+ enable-active-high;
+ };
+
+ spi {
+ compatible = "spi-gpio";
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ /* Collides with IDE pins, that's cool (we do not use them) */
+ gpio-sck = <&gpio1 5 GPIO_ACTIVE_HIGH>;
+ gpio-miso = <&gpio1 8 GPIO_ACTIVE_HIGH>;
+ gpio-mosi = <&gpio1 7 GPIO_ACTIVE_HIGH>;
+ /* Collides with pflash CE1, not so cool */
+ cs-gpios = <&gpio0 20 GPIO_ACTIVE_HIGH>;
+ num-chipselects = <1>;
+
+ panel: display at 0 {
+ compatible = "ilitek,ili9322";
+ reg = <0>;
+ /* 50 ns min period = 20 MHz */
+ spi-max-frequency = <20000000>;
+ spi-cpol; /* Clock active low */
+
+ /* Panel LM918A01-1A SY-B4-091116-E0199 */
+ width-mm = <65>;
+ height-mm = <50>;
+ ilitek,entry-mode = <11>;
+ ilitek,vreg1out-microvolt = <4600>;
+ ilitek,vcom-high-percent = <91>;
+ ilitek,vcom-amplitude-percent = <114>;
+ ilitek,gamma-correction-neg = <0xa>, <0x5>, <0x7>,
+ <0x7>, <0x7>, <0x5>, <0x1>, <0x6>;
+ ilitek,gamma-correction-pos = <0x7>, <0x7>, <0x3>,
+ <0x2>, <0x3>, <0x5>, <0x7>, <0x2>;
+ vcc-supply = <&vdisp>;
+ iovcc-supply = <&vdisp>;
+ vci-supply = <&vdisp>;
+
+ port {
+ panel_in: endpoint {
+ remote-endpoint = <&display_out>;
+ };
+ };
+ };
+ };
+
leds {
compatible = "gpio-leds";
led at 7 {
@@ -114,7 +167,16 @@
soc {
flash at 30000000 {
- status = "okay";
+ /*
+ * Flash access is by default disabled, because it
+ * collides with the Chip Enable signal for the display
+ * panel, that reuse the parallel flash Chip Select 1
+ * (CS1). Enabling flash makes graphics stop working.
+ *
+ * We might be able to hack around this by letting
+ * GPIO poke around in the flash controller registers.
+ */
+ /* status = "okay"; */
/* 32MB of flash */
reg = <0x30000000 0x02000000>;
@@ -241,5 +303,16 @@
ata at 63000000 {
status = "okay";
};
+
+ display-controller at 6a000000 {
+ status = "okay";
+
+ port at 0 {
+ reg = <0>;
+ display_out: endpoint {
+ remote-endpoint = <&panel_in>;
+ };
+ };
+ };
};
};
--
2.13.5
^ permalink raw reply related [flat|nested] 12+ messages in thread
* [PATCH 4/4 v2] ARM: dts: Add TVE/TVC and ILI9322 panel to DIR-685
@ 2017-08-20 10:05 ` Linus Walleij
0 siblings, 0 replies; 12+ messages in thread
From: Linus Walleij @ 2017-08-20 10:05 UTC (permalink / raw)
To: dri-devel, Eric Anholt, Daniel Vetter, Jani Nikula, Sean Paul
Cc: linux-arm-kernel
This adds the TVE200/TVC TV-encoder and the Ilitek ILI9322 panel
to the DIR-685 device tree.
This brings graphics to this funky router and it is possible to
even run a console on its tiny screen.
Incidentally this requires us to disable the access to the
parallel (NOR) flash, as the communication pins to the panel
are shared with the flash memory.
To access the flash, a separate kernel with the panel disabled
and the flash enabled should be booted. The pin control selecting
whether to use the lines cannot be altered at runtime due to
hardware constraints.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
ChangeLog v1->v2:
- Rename node from "tvc" to "display-controller"
DRM developers: I will merge this patch through the ARM SoC
tree. It is only included in this series for completion.
---
arch/arm/boot/dts/gemini-dlink-dir-685.dts | 75 +++++++++++++++++++++++++++++-
1 file changed, 74 insertions(+), 1 deletion(-)
diff --git a/arch/arm/boot/dts/gemini-dlink-dir-685.dts b/arch/arm/boot/dts/gemini-dlink-dir-685.dts
index 094a29624b8d..8e4037597a2c 100644
--- a/arch/arm/boot/dts/gemini-dlink-dir-685.dts
+++ b/arch/arm/boot/dts/gemini-dlink-dir-685.dts
@@ -46,6 +46,59 @@
};
};
+ vdisp: regulator {
+ compatible = "regulator-fixed";
+ regulator-name = "display-power";
+ regulator-min-microvolt = <3600000>;
+ regulator-max-microvolt = <3600000>;
+ /* Collides with LCD E */
+ gpio = <&gpio0 16 GPIO_ACTIVE_HIGH>;
+ enable-active-high;
+ };
+
+ spi {
+ compatible = "spi-gpio";
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ /* Collides with IDE pins, that's cool (we do not use them) */
+ gpio-sck = <&gpio1 5 GPIO_ACTIVE_HIGH>;
+ gpio-miso = <&gpio1 8 GPIO_ACTIVE_HIGH>;
+ gpio-mosi = <&gpio1 7 GPIO_ACTIVE_HIGH>;
+ /* Collides with pflash CE1, not so cool */
+ cs-gpios = <&gpio0 20 GPIO_ACTIVE_HIGH>;
+ num-chipselects = <1>;
+
+ panel: display@0 {
+ compatible = "ilitek,ili9322";
+ reg = <0>;
+ /* 50 ns min period = 20 MHz */
+ spi-max-frequency = <20000000>;
+ spi-cpol; /* Clock active low */
+
+ /* Panel LM918A01-1A SY-B4-091116-E0199 */
+ width-mm = <65>;
+ height-mm = <50>;
+ ilitek,entry-mode = <11>;
+ ilitek,vreg1out-microvolt = <4600>;
+ ilitek,vcom-high-percent = <91>;
+ ilitek,vcom-amplitude-percent = <114>;
+ ilitek,gamma-correction-neg = <0xa>, <0x5>, <0x7>,
+ <0x7>, <0x7>, <0x5>, <0x1>, <0x6>;
+ ilitek,gamma-correction-pos = <0x7>, <0x7>, <0x3>,
+ <0x2>, <0x3>, <0x5>, <0x7>, <0x2>;
+ vcc-supply = <&vdisp>;
+ iovcc-supply = <&vdisp>;
+ vci-supply = <&vdisp>;
+
+ port {
+ panel_in: endpoint {
+ remote-endpoint = <&display_out>;
+ };
+ };
+ };
+ };
+
leds {
compatible = "gpio-leds";
led@7 {
@@ -114,7 +167,16 @@
soc {
flash@30000000 {
- status = "okay";
+ /*
+ * Flash access is by default disabled, because it
+ * collides with the Chip Enable signal for the display
+ * panel, that reuse the parallel flash Chip Select 1
+ * (CS1). Enabling flash makes graphics stop working.
+ *
+ * We might be able to hack around this by letting
+ * GPIO poke around in the flash controller registers.
+ */
+ /* status = "okay"; */
/* 32MB of flash */
reg = <0x30000000 0x02000000>;
@@ -241,5 +303,16 @@
ata@63000000 {
status = "okay";
};
+
+ display-controller@6a000000 {
+ status = "okay";
+
+ port@0 {
+ reg = <0>;
+ display_out: endpoint {
+ remote-endpoint = <&panel_in>;
+ };
+ };
+ };
};
};
--
2.13.5
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel
^ permalink raw reply related [flat|nested] 12+ messages in thread
* [PATCH 2/4 v2] drm/tve200: Add new driver for TVE200
2017-08-20 10:05 ` Linus Walleij
@ 2017-08-21 16:30 ` Daniel Vetter
-1 siblings, 0 replies; 12+ messages in thread
From: Daniel Vetter @ 2017-08-21 16:30 UTC (permalink / raw)
To: linux-arm-kernel
On Sun, Aug 20, 2017 at 12:05:55PM +0200, Linus Walleij wrote:
> This adds a new DRM driver for the Faraday Technology TVE200
> block. This "TV Encoder" encodes a ITU-T BT.656 stream and can
> be found in the StorLink SL3516 (later Cortina Systems CS3516)
> as well as the Grain Media GM8180.
>
> I do not have definitive word from anyone at Faraday that this
> IP block is theirs, but it bears the hallmark of their 3-digit
> version code (200) and is used in two SoCs from completely
> different companies. (Grain Media was fully owned by Faraday
> until it was transferred to NovoTek this january, and
> Faraday did lots of work on the StorLink SoCs.)
>
> The D-Link DIR-685 uses this in connection with the Ilitek
> ILI9322 panel driver that supports BT.656 input, while the
> GM8180 apparently has been used with the Cirrus Logic CS4954
> digital video encoder. The oldest user seems to be
> something called Techwall 2835.
>
> This driver is heavily inspired by Eric Anholt's PL111
> driver and therefore I have mentioned all the ancestor authors
> in the header file.
>
> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
> Reviewed-by: Eric Anholt <eric@anholt.net>
> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Just 2 comments for the discussion:
On wiring up the panel-bridge: The rough idea would be to be to wrap the
panel into drm_bridge using devm_drm_panel_bridge_add(). That should
remove pretty much all your connector code.
Then attach that bridge to your simple kms pipe using
drm_simple_display_pipe_attach_bridge(). If you use that one you can pass
NULL for the connector when calling drm_simple_display_pipe_init(), the
kernel-doc explains that.
I don't think anything else would be needed really, it should all just
work. Well, you'd need to remove all the explicit calls to enable/disable
the panel, since the bridge takes care of that.
But imo that can be done as a follow up, if you're bored.
> +static int tve200_display_prepare_fb(struct drm_simple_display_pipe *pipe,
> + struct drm_plane_state *plane_state)
> +{
> + return drm_fb_cma_prepare_fb(&pipe->plane, plane_state);
> +}
I think a wrapper in the simple_kms_helper for the above would be good.
Probably best done after Noralf's cleanup has landed (since that removes
the cma-specific prepare_fb function and replaces it by a generic one
which works for all gem based drivers).
btw for merging your driver I think you only need the DT ack from Rob
Herring, then you can push the entire pile to drm-misc.
Cheers, Daniel
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: [PATCH 2/4 v2] drm/tve200: Add new driver for TVE200
@ 2017-08-21 16:30 ` Daniel Vetter
0 siblings, 0 replies; 12+ messages in thread
From: Daniel Vetter @ 2017-08-21 16:30 UTC (permalink / raw)
To: Linus Walleij; +Cc: dri-devel, Daniel Vetter, linux-arm-kernel
On Sun, Aug 20, 2017 at 12:05:55PM +0200, Linus Walleij wrote:
> This adds a new DRM driver for the Faraday Technology TVE200
> block. This "TV Encoder" encodes a ITU-T BT.656 stream and can
> be found in the StorLink SL3516 (later Cortina Systems CS3516)
> as well as the Grain Media GM8180.
>
> I do not have definitive word from anyone at Faraday that this
> IP block is theirs, but it bears the hallmark of their 3-digit
> version code (200) and is used in two SoCs from completely
> different companies. (Grain Media was fully owned by Faraday
> until it was transferred to NovoTek this january, and
> Faraday did lots of work on the StorLink SoCs.)
>
> The D-Link DIR-685 uses this in connection with the Ilitek
> ILI9322 panel driver that supports BT.656 input, while the
> GM8180 apparently has been used with the Cirrus Logic CS4954
> digital video encoder. The oldest user seems to be
> something called Techwall 2835.
>
> This driver is heavily inspired by Eric Anholt's PL111
> driver and therefore I have mentioned all the ancestor authors
> in the header file.
>
> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
> Reviewed-by: Eric Anholt <eric@anholt.net>
> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Just 2 comments for the discussion:
On wiring up the panel-bridge: The rough idea would be to be to wrap the
panel into drm_bridge using devm_drm_panel_bridge_add(). That should
remove pretty much all your connector code.
Then attach that bridge to your simple kms pipe using
drm_simple_display_pipe_attach_bridge(). If you use that one you can pass
NULL for the connector when calling drm_simple_display_pipe_init(), the
kernel-doc explains that.
I don't think anything else would be needed really, it should all just
work. Well, you'd need to remove all the explicit calls to enable/disable
the panel, since the bridge takes care of that.
But imo that can be done as a follow up, if you're bored.
> +static int tve200_display_prepare_fb(struct drm_simple_display_pipe *pipe,
> + struct drm_plane_state *plane_state)
> +{
> + return drm_fb_cma_prepare_fb(&pipe->plane, plane_state);
> +}
I think a wrapper in the simple_kms_helper for the above would be good.
Probably best done after Noralf's cleanup has landed (since that removes
the cma-specific prepare_fb function and replaces it by a generic one
which works for all gem based drivers).
btw for merging your driver I think you only need the DT ack from Rob
Herring, then you can push the entire pile to drm-misc.
Cheers, Daniel
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel
^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: [PATCH 1/4 v2] drm/tve200: Add DT bindings
2017-08-20 10:05 ` Linus Walleij
@ 2017-08-21 19:21 ` Rob Herring
-1 siblings, 0 replies; 12+ messages in thread
From: Rob Herring @ 2017-08-21 19:21 UTC (permalink / raw)
To: Linus Walleij; +Cc: devicetree, dri-devel, Daniel Vetter, linux-arm-kernel
On Sun, Aug 20, 2017 at 5:05 AM, Linus Walleij <linus.walleij@linaro.org> wrote:
> This adds device tree bindings for the Faraday TVE200 IP block.
> This IP block is present in the Gemini ARM SoC and also in some
> Grain Media GMxxxx SoCs.
>
> Cc: devicetree@vger.kernel.org
> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
> ---
> ChangeLog v1->v2:
> - Fix display port bindings: list required endpoint.
> - Fix the example to include an endpoint.
> ---
> .../devicetree/bindings/display/faraday,tve200.txt | 54 ++++++++++++++++++++++
> 1 file changed, 54 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/display/faraday,tve200.txt
Acked-by: Rob Herring <robh@kernel.org>
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel
^ permalink raw reply [flat|nested] 12+ messages in thread
* [PATCH 1/4 v2] drm/tve200: Add DT bindings
@ 2017-08-21 19:21 ` Rob Herring
0 siblings, 0 replies; 12+ messages in thread
From: Rob Herring @ 2017-08-21 19:21 UTC (permalink / raw)
To: linux-arm-kernel
On Sun, Aug 20, 2017 at 5:05 AM, Linus Walleij <linus.walleij@linaro.org> wrote:
> This adds device tree bindings for the Faraday TVE200 IP block.
> This IP block is present in the Gemini ARM SoC and also in some
> Grain Media GMxxxx SoCs.
>
> Cc: devicetree at vger.kernel.org
> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
> ---
> ChangeLog v1->v2:
> - Fix display port bindings: list required endpoint.
> - Fix the example to include an endpoint.
> ---
> .../devicetree/bindings/display/faraday,tve200.txt | 54 ++++++++++++++++++++++
> 1 file changed, 54 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/display/faraday,tve200.txt
Acked-by: Rob Herring <robh@kernel.org>
^ permalink raw reply [flat|nested] 12+ messages in thread
end of thread, other threads:[~2017-08-21 19:21 UTC | newest]
Thread overview: 12+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2017-08-20 10:05 [PATCH 1/4 v2] drm/tve200: Add DT bindings Linus Walleij
2017-08-20 10:05 ` Linus Walleij
2017-08-20 10:05 ` [PATCH 2/4 v2] drm/tve200: Add new driver for TVE200 Linus Walleij
2017-08-20 10:05 ` Linus Walleij
2017-08-21 16:30 ` Daniel Vetter
2017-08-21 16:30 ` Daniel Vetter
2017-08-20 10:05 ` [PATCH 3/4 v2] ARM: dts: Add TVE200 to the Gemini SoC DTSI Linus Walleij
2017-08-20 10:05 ` Linus Walleij
2017-08-20 10:05 ` [PATCH 4/4 v2] ARM: dts: Add TVE/TVC and ILI9322 panel to DIR-685 Linus Walleij
2017-08-20 10:05 ` Linus Walleij
2017-08-21 19:21 ` [PATCH 1/4 v2] drm/tve200: Add DT bindings Rob Herring
2017-08-21 19:21 ` Rob Herring
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