[PATCH 3/3] drm/bridge: Add ITE IT6251 bridge driver
Add driver for the ITE IT6251 LVDS-to-eDP bridge.
Signed-off-by: Marek Vasut
Cc: Daniel Vetter
Cc: Sean Cross
To: dri-devel@lists.freedesktop.org
---
drivers/gpu/drm/bridge/Kconfig | 9 +
drivers/gpu/drm/bridge/Makefile | 1 +
drivers/gpu/drm/bridge/ite-it6251.c | 582
3 files changed, 592 insertions(+)
create mode 100644 drivers/gpu/drm/bridge/ite-it6251.c
diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig
index 0b9ca5862455..bebb78cf1ccf 100644
--- a/drivers/gpu/drm/bridge/Kconfig
+++ b/drivers/gpu/drm/bridge/Kconfig
@@ -35,6 +35,15 @@ config DRM_DUMB_VGA_DAC
Support for non-programmable RGB to VGA DAC bridges, such as ADI
ADV7123, TI THS8134 and THS8135 or passive resistor ladder DACs.
+config DRM_ITE_IT6251
+ tristate "ITE IT6251 LVDS/eDP bridge"
+ depends on OF
+ select DRM_KMS_HELPER
+ select DRM_PANEL
+ select REGMAP_I2C
+ help
+ ITE IT6251 LVDS-eDP bridge chip driver.
+
config DRM_LVDS_CODEC
tristate "Transparent LVDS encoders and decoders support"
depends on OF
diff --git a/drivers/gpu/drm/bridge/Makefile b/drivers/gpu/drm/bridge/Makefile
index cd16ce830270..b1af35c2151b 100644
--- a/drivers/gpu/drm/bridge/Makefile
+++ b/drivers/gpu/drm/bridge/Makefile
@@ -1,6 +1,7 @@
# SPDX-License-Identifier: GPL-2.0
obj-$(CONFIG_DRM_CDNS_DSI) += cdns-dsi.o
obj-$(CONFIG_DRM_DUMB_VGA_DAC) += dumb-vga-dac.o
+obj-$(CONFIG_DRM_ITE_IT6251) += ite-it6251.o
obj-$(CONFIG_DRM_LVDS_CODEC) += lvds-codec.o
obj-$(CONFIG_DRM_MEGACHIPS_STDP_GE_B850V3_FW) +=
megachips-stdp-ge-b850v3-fw.o
obj-$(CONFIG_DRM_NXP_PTN3460) += nxp-ptn3460.o
diff --git a/drivers/gpu/drm/bridge/ite-it6251.c
b/drivers/gpu/drm/bridge/ite-it6251.c
new file mode 100644
index ..78e86ebbad69
--- /dev/null
+++ b/drivers/gpu/drm/bridge/ite-it6251.c
@@ -0,0 +1,582 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2014 Sean Cross
+ *
+ * Rework for mainline: Marek Vasut
+ */
+
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+
+struct it6251_bridge {
+ struct i2c_client *client;
+ struct i2c_client *lvds_client;
+ struct regmap *regmap;
+ struct regmap *lvds_regmap;
+ struct regulator*regulator;
+
+ struct drm_connectorconnector;
+ struct drm_bridge bridge;
+ struct drm_panel*panel;
+};
+
+/* Register definitions */
+#define IT6251_VENDOR_ID_LOW 0x00
+#define IT6251_VENDOR_ID_HIGH 0x01
+#define IT6251_DEVICE_ID_LOW 0x02
+#define IT6251_DEVICE_ID_HIGH 0x03
+#define IT6251_SYSTEM_STATUS 0x0d
+#define IT6251_SYSTEM_STATUS_RINTSTATUSBIT(0)
+#define IT6251_SYSTEM_STATUS_RHPDSTATUSBIT(1)
+#define IT6251_SYSTEM_STATUS_RVIDEOSTABLE BIT(2)
+#define IT6251_SYSTEM_STATUS_RPLL_IOLOCK BIT(3)
+#define IT6251_SYSTEM_STATUS_RPLL_XPLOCK BIT(4)
+#define IT6251_SYSTEM_STATUS_RPLL_SPLOCK BIT(5)
+#define IT6251_SYSTEM_STATUS_RAUXFREQ_LOCK BIT(6)
+#define IT6251_REF_STATE 0x0e
+#define IT6251_REF_STATE_MAIN_LINK_DISABLEDBIT(0)
+#define IT6251_REF_STATE_AUX_CHANNEL_READ BIT(1)
+#define IT6251_REF_STATE_CR_PATTERNBIT(2)
+#define IT6251_REF_STATE_EQ_PATTERNBIT(3)
+#define IT6251_REF_STATE_NORMAL_OPERATION BIT(4)
+#define IT6251_REF_STATE_MUTED BIT(5)
+#define IT6251_RPCLK_CNT_LOW 0x13
+#define IT6251_RPCLK_CNT_HIGH 0x14
+#define IT6251_RPC_REQ 0x2b
+#define IT6251_RPC_REQ_RPC_FIFOFULLBIT(6)
+#define IT6251_RPC_REQ_RPC_FIFOEMPTY BIT(7)
+#define IT6251_PCLK_CNT_LOW0x57
+#define IT6251_PCLK_CNT_HIGH 0x58
+#define IT6251_DPHDEW_LOW 0xa5
+#define IT6251_DPHDEW_HIGH 0xa6
+#define IT6251_DPVDEW_LOW 0xaf
+#define IT6251_DPVDEW_HIGH 0xb0
+#define IT6251_LVDS_PORT_ADDR 0xfd
+#define IT6251_LVDS_PORT_CTRL 0xfe
+#define IT6251_LVDS_PORT_CTRL_EN BIT(0)
+
+/*
+ * Register programming sequences.
+ * NOTE: There is a lot of registers here which are completely undocumented
+ * and/or their meaning is not clear from the little documentation
+ * that is available for this chip. These values below just seem to
+ * work well enough.
+ */
+static const struct reg_sequence it6251_lvds_rx_sequence[] = {
+ { 0x05, 0x00 },
+
+ { 0x3b, 0x42 }, /* reset LVDSRX PLL */
+ { 0x3b, 0x43 },
+
+ { 0x3c, 0x08 }, /* something with SSC PLL */
+ { 0x0b, 0x88 }, /* don't swap links, wr
[PATCH 3/3] drm/bridge: Add ITE IT6251 bridge driver
Hi,
On 10/17/2016 10:03 PM, Marek Vasut wrote:
> Add driver for the ITE IT6251 LVDS-to-eDP bridge.
>
> Signed-off-by: Marek Vasut
> Cc: Daniel Vetter
> Cc: Sean Cross
> ---
> drivers/gpu/drm/bridge/Kconfig | 9 +
> drivers/gpu/drm/bridge/Makefile | 1 +
> drivers/gpu/drm/bridge/ite-it6251.c | 606
>
> 3 files changed, 616 insertions(+)
> create mode 100644 drivers/gpu/drm/bridge/ite-it6251.c
>
> diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig
> index 10e12e7..e9c96b9 100644
> --- a/drivers/gpu/drm/bridge/Kconfig
> +++ b/drivers/gpu/drm/bridge/Kconfig
> @@ -39,6 +39,15 @@ config DRM_DW_HDMI_AHB_AUDIO
> Designware HDMI block. This is used in conjunction with
> the i.MX6 HDMI driver.
>
> +config DRM_ITE_IT6251
> + tristate "ITE IT6251 LVDS/eDP bridge"
> + depends on OF
> + select DRM_KMS_HELPER
> + select DRM_PANEL
> + select REGMAP_I2C
> + ---help---
> + ITE IT6251 LVDS-eDP bridge chip driver.
> +
> config DRM_NXP_PTN3460
> tristate "NXP PTN3460 DP/LVDS bridge"
> depends on OF
> diff --git a/drivers/gpu/drm/bridge/Makefile b/drivers/gpu/drm/bridge/Makefile
> index cdf3a3c..736dba7 100644
> --- a/drivers/gpu/drm/bridge/Makefile
> +++ b/drivers/gpu/drm/bridge/Makefile
> @@ -4,6 +4,7 @@ obj-$(CONFIG_DRM_ANALOGIX_ANX78XX) += analogix-anx78xx.o
> obj-$(CONFIG_DRM_DUMB_VGA_DAC) += dumb-vga-dac.o
> obj-$(CONFIG_DRM_DW_HDMI) += dw-hdmi.o
> obj-$(CONFIG_DRM_DW_HDMI_AHB_AUDIO) += dw-hdmi-ahb-audio.o
> +obj-$(CONFIG_DRM_ITE_IT6251) += ite-it6251.o
> obj-$(CONFIG_DRM_NXP_PTN3460) += nxp-ptn3460.o
> obj-$(CONFIG_DRM_PARADE_PS8622) += parade-ps8622.o
> obj-$(CONFIG_DRM_SII902X) += sii902x.o
> diff --git a/drivers/gpu/drm/bridge/ite-it6251.c
> b/drivers/gpu/drm/bridge/ite-it6251.c
> new file mode 100644
> index 000..a19bb4d
> --- /dev/null
> +++ b/drivers/gpu/drm/bridge/ite-it6251.c
> @@ -0,0 +1,606 @@
> +/*
We're trying to mention the bridge name, and what encoding it does for all
bridge
drivers. Could you describe it here too? Thanks.
> + * Copyright (C) 2014 Sean Cross
> + *
> + * Rework for mainline: Marek Vasut
> + *
> + * This software is licensed under the terms of the GNU General Public
> + * License version 2, as published by the Free Software Foundation, and
> + * may be copied, distributed, and modified under those terms.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + */
> +
> +#include
> +#include
> +#include
> +#include
This shouldn't be needed.
> +#include
> +#include
This too.
> +#include
> +#include
> +#include
> +
> +#include "drmP.h"
> +#include "drm_crtc.h"
> +#include "drm_crtc_helper.h"
> +#include "drm_atomic_helper.h"
> +
> +struct it6251_bridge {
> + struct i2c_client *client;
> + struct i2c_client *lvds_client;
> + struct regmap *regmap;
> + struct regmap *lvds_regmap;
> + struct regulator*regulator;
> +
> + struct drm_connectorconnector;
> + struct drm_bridge bridge;
> + struct drm_panel*panel;
> +};
> +
> +/* Register definitions */
> +#define IT6251_VENDOR_ID_LOW 0x00
> +#define IT6251_VENDOR_ID_HIGH0x01
> +#define IT6251_DEVICE_ID_LOW 0x02
> +#define IT6251_DEVICE_ID_HIGH0x03
> +#define IT6251_SYSTEM_STATUS 0x0d
> +#define IT6251_SYSTEM_STATUS_RINTSTATUS BIT(0)
> +#define IT6251_SYSTEM_STATUS_RHPDSTATUS BIT(1)
> +#define IT6251_SYSTEM_STATUS_RVIDEOSTABLEBIT(2)
> +#define IT6251_SYSTEM_STATUS_RPLL_IOLOCK BIT(3)
> +#define IT6251_SYSTEM_STATUS_RPLL_XPLOCK BIT(4)
> +#define IT6251_SYSTEM_STATUS_RPLL_SPLOCK BIT(5)
> +#define IT6251_SYSTEM_STATUS_RAUXFREQ_LOCK BIT(6)
> +#define IT6251_REF_STATE 0x0e
> +#define IT6251_REF_STATE_MAIN_LINK_DISABLED BIT(0)
> +#define IT6251_REF_STATE_AUX_CHANNEL_READBIT(1)
> +#define IT6251_REF_STATE_CR_PATTERN BIT(2)
> +#define IT6251_REF_STATE_EQ_PATTERN BIT(3)
> +#define IT6251_REF_STATE_NORMAL_OPERATIONBIT(4)
> +#define IT6251_REF_STATE_MUTED BIT(5)
> +#define IT6251_RPCLK_CNT_LOW 0x13
> +#define IT6251_RPCLK_CNT_HIGH0x14
> +#define IT6251_RPC_REQ 0x2b
> +#define IT6251_RPC_REQ_RPC_FIFOFULL BIT(6)
> +#define IT6251_RPC_REQ_RPC_FIFOEMPTY BIT(7)
> +#define IT6251_PCLK_CNT_LOW 0x57
> +#define IT6251_PCLK_CNT_HIGH 0x58
> +#define IT6251_DPHDEW_LOW0xa5
> +#define IT6251_DPHDEW_HIGH 0xa6
> +#define IT6251_DPVDEW_LOW
[PATCH 3/3] drm/bridge: Add ITE IT6251 bridge driver
Add driver for the ITE IT6251 LVDS-to-eDP bridge.
Signed-off-by: Marek Vasut
Cc: Daniel Vetter
Cc: Sean Cross
---
drivers/gpu/drm/bridge/Kconfig | 9 +
drivers/gpu/drm/bridge/Makefile | 1 +
drivers/gpu/drm/bridge/ite-it6251.c | 606
3 files changed, 616 insertions(+)
create mode 100644 drivers/gpu/drm/bridge/ite-it6251.c
diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig
index 10e12e7..e9c96b9 100644
--- a/drivers/gpu/drm/bridge/Kconfig
+++ b/drivers/gpu/drm/bridge/Kconfig
@@ -39,6 +39,15 @@ config DRM_DW_HDMI_AHB_AUDIO
Designware HDMI block. This is used in conjunction with
the i.MX6 HDMI driver.
+config DRM_ITE_IT6251
+ tristate "ITE IT6251 LVDS/eDP bridge"
+ depends on OF
+ select DRM_KMS_HELPER
+ select DRM_PANEL
+ select REGMAP_I2C
+ ---help---
+ ITE IT6251 LVDS-eDP bridge chip driver.
+
config DRM_NXP_PTN3460
tristate "NXP PTN3460 DP/LVDS bridge"
depends on OF
diff --git a/drivers/gpu/drm/bridge/Makefile b/drivers/gpu/drm/bridge/Makefile
index cdf3a3c..736dba7 100644
--- a/drivers/gpu/drm/bridge/Makefile
+++ b/drivers/gpu/drm/bridge/Makefile
@@ -4,6 +4,7 @@ obj-$(CONFIG_DRM_ANALOGIX_ANX78XX) += analogix-anx78xx.o
obj-$(CONFIG_DRM_DUMB_VGA_DAC) += dumb-vga-dac.o
obj-$(CONFIG_DRM_DW_HDMI) += dw-hdmi.o
obj-$(CONFIG_DRM_DW_HDMI_AHB_AUDIO) += dw-hdmi-ahb-audio.o
+obj-$(CONFIG_DRM_ITE_IT6251) += ite-it6251.o
obj-$(CONFIG_DRM_NXP_PTN3460) += nxp-ptn3460.o
obj-$(CONFIG_DRM_PARADE_PS8622) += parade-ps8622.o
obj-$(CONFIG_DRM_SII902X) += sii902x.o
diff --git a/drivers/gpu/drm/bridge/ite-it6251.c
b/drivers/gpu/drm/bridge/ite-it6251.c
new file mode 100644
index 000..a19bb4d
--- /dev/null
+++ b/drivers/gpu/drm/bridge/ite-it6251.c
@@ -0,0 +1,606 @@
+/*
+ * Copyright (C) 2014 Sean Cross
+ *
+ * Rework for mainline: Marek Vasut
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+
+#include "drmP.h"
+#include "drm_crtc.h"
+#include "drm_crtc_helper.h"
+#include "drm_atomic_helper.h"
+
+struct it6251_bridge {
+ struct i2c_client *client;
+ struct i2c_client *lvds_client;
+ struct regmap *regmap;
+ struct regmap *lvds_regmap;
+ struct regulator*regulator;
+
+ struct drm_connectorconnector;
+ struct drm_bridge bridge;
+ struct drm_panel*panel;
+};
+
+/* Register definitions */
+#define IT6251_VENDOR_ID_LOW 0x00
+#define IT6251_VENDOR_ID_HIGH 0x01
+#define IT6251_DEVICE_ID_LOW 0x02
+#define IT6251_DEVICE_ID_HIGH 0x03
+#define IT6251_SYSTEM_STATUS 0x0d
+#define IT6251_SYSTEM_STATUS_RINTSTATUSBIT(0)
+#define IT6251_SYSTEM_STATUS_RHPDSTATUSBIT(1)
+#define IT6251_SYSTEM_STATUS_RVIDEOSTABLE BIT(2)
+#define IT6251_SYSTEM_STATUS_RPLL_IOLOCK BIT(3)
+#define IT6251_SYSTEM_STATUS_RPLL_XPLOCK BIT(4)
+#define IT6251_SYSTEM_STATUS_RPLL_SPLOCK BIT(5)
+#define IT6251_SYSTEM_STATUS_RAUXFREQ_LOCK BIT(6)
+#define IT6251_REF_STATE 0x0e
+#define IT6251_REF_STATE_MAIN_LINK_DISABLEDBIT(0)
+#define IT6251_REF_STATE_AUX_CHANNEL_READ BIT(1)
+#define IT6251_REF_STATE_CR_PATTERNBIT(2)
+#define IT6251_REF_STATE_EQ_PATTERNBIT(3)
+#define IT6251_REF_STATE_NORMAL_OPERATION BIT(4)
+#define IT6251_REF_STATE_MUTED BIT(5)
+#define IT6251_RPCLK_CNT_LOW 0x13
+#define IT6251_RPCLK_CNT_HIGH 0x14
+#define IT6251_RPC_REQ 0x2b
+#define IT6251_RPC_REQ_RPC_FIFOFULLBIT(6)
+#define IT6251_RPC_REQ_RPC_FIFOEMPTY BIT(7)
+#define IT6251_PCLK_CNT_LOW0x57
+#define IT6251_PCLK_CNT_HIGH 0x58
+#define IT6251_DPHDEW_LOW 0xa5
+#define IT6251_DPHDEW_HIGH 0xa6
+#define IT6251_DPVDEW_LOW 0xaf
+#define IT6251_DPVDEW_HIGH 0xb0
+#define IT6251_LVDS_PORT_ADDR 0xfd
+#define IT6251_LVDS_PORT_CTRL 0xfe
+#define IT6251_LVDS_PORT_CTRL_EN BIT(0)
+
+/*
+ * Register programming sequences.
+ * NOTE: There is a lot of registers here which are completely undocumented
+ * and/or their meaning is not clear from the little documentation
