From patchwork Fri Apr 26 00:53:07 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Cercueil X-Patchwork-Id: 10918435 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 3252E1575 for ; Fri, 26 Apr 2019 07:09:35 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 20E5528D92 for ; Fri, 26 Apr 2019 07:09:35 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 153A928D95; Fri, 26 Apr 2019 07:09:35 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id A0CE328D92 for ; Fri, 26 Apr 2019 07:09:34 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 5423E89337; Fri, 26 Apr 2019 07:09:02 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from crapouillou.net (outils.crapouillou.net [89.234.176.41]) by gabe.freedesktop.org (Postfix) with ESMTPS id AC07D892A4 for ; Fri, 26 Apr 2019 00:53:21 +0000 (UTC) From: Paul Cercueil To: David Airlie , Daniel Vetter , Rob Herring , Mark Rutland , Maarten Lankhorst , Maxime Ripard , Sean Paul Subject: [PATCH v4 1/2] dt-bindings: Add doc for the Ingenic JZ47xx LCD controller driver Date: Fri, 26 Apr 2019 02:53:07 +0200 Message-Id: <20190426005308.27039-1-paul@crapouillou.net> MIME-Version: 1.0 X-Mailman-Approved-At: Fri, 26 Apr 2019 07:08:59 +0000 X-Mailman-Original-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=crapouillou.net; s=mail; t=1556239999; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-transfer-encoding:content-transfer-encoding: in-reply-to:references; bh=xk9yOjcMwGU3tfqxXUFP4ZOgKkcN/lKAiztLyr/p1f8=; b=pd7W1rH5gZm5dxfCUBwfuFhyUkb2uz2O67xmHuqB+0/4yumMaSKANAGTy5hcLQGl9WE1wa ko5RQeo8Vtwnx+pGIClIjGAiACA82Oxp5d7sQFI2FXOkVS1P8DhXaSLcYAvvI/xBgr3Law Y8d+GRJjky3/W/yR7+chDYONAQjj8jo= X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, Artur Rojek , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, Paul Cercueil , od@zcrc.me Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP Add documentation for the devicetree bindings of the LCD controller present in the JZ47xx family of SoCs from Ingenic. Signed-off-by: Paul Cercueil Tested-by: Artur Rojek Reviewed-by: Rob Herring --- Notes: v2: Remove ingenic,panel property. v3: - Rename compatible strings from ingenic,jz47XX-drm to ingenic,jz47XX-lcd - The ingenic,lcd-mode property is now read from the panel node instead of from the driver node v4: Remove ingenic,lcd-mode property completely. .../bindings/display/ingenic,lcd.txt | 44 +++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 Documentation/devicetree/bindings/display/ingenic,lcd.txt diff --git a/Documentation/devicetree/bindings/display/ingenic,lcd.txt b/Documentation/devicetree/bindings/display/ingenic,lcd.txt new file mode 100644 index 000000000000..7b536c8c6dde --- /dev/null +++ b/Documentation/devicetree/bindings/display/ingenic,lcd.txt @@ -0,0 +1,44 @@ +Ingenic JZ47xx LCD driver + +Required properties: +- compatible: one of: + * ingenic,jz4740-lcd + * ingenic,jz4725b-lcd +- reg: LCD registers location and length +- clocks: LCD pixclock and device clock specifiers. + The device clock is only required on the JZ4740. +- clock-names: "lcd_pclk" and "lcd" +- interrupts: Specifies the interrupt line the LCD controller is connected to. + +Example: + +panel { + compatible = "sharp,ls020b1dd01d"; + + backlight = <&backlight>; + power-supply = <&vcc>; + + port { + panel_input: endpoint { + remote-endpoint = <&panel_output>; + }; + }; +}; + + +lcd: lcd-controller@13050000 { + compatible = "ingenic,jz4725b-lcd"; + reg = <0x13050000 0x1000>; + + interrupt-parent = <&intc>; + interrupts = <31>; + + clocks = <&cgu JZ4725B_CLK_LCD>; + clock-names = "lcd"; + + port { + panel_output: endpoint { + remote-endpoint = <&panel_input>; + }; + }; +}; From patchwork Fri Apr 26 00:53:08 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Cercueil X-Patchwork-Id: 10918479 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 572881575 for ; Fri, 26 Apr 2019 07:10:18 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 42EAA28843 for ; Fri, 26 Apr 2019 07:10:18 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 36F6628C9D; Fri, 26 Apr 2019 07:10:18 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id C66C528843 for ; Fri, 26 Apr 2019 07:10:16 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id BD4918940F; Fri, 26 Apr 2019 07:09:07 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from crapouillou.net (outils.crapouillou.net [89.234.176.41]) by gabe.freedesktop.org (Postfix) with ESMTPS id 70BBA892A5 for ; Fri, 26 Apr 2019 00:53:26 +0000 (UTC) From: Paul Cercueil To: David Airlie , Daniel Vetter , Rob Herring , Mark Rutland , Maarten Lankhorst , Maxime Ripard , Sean Paul Subject: [PATCH v4 2/2] DRM: Add KMS driver for the Ingenic JZ47xx SoCs Date: Fri, 26 Apr 2019 02:53:08 +0200 Message-Id: <20190426005308.27039-2-paul@crapouillou.net> In-Reply-To: <20190426005308.27039-1-paul@crapouillou.net> References: <20190426005308.27039-1-paul@crapouillou.net> MIME-Version: 1.0 X-Mailman-Approved-At: Fri, 26 Apr 2019 07:08:59 +0000 X-Mailman-Original-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=crapouillou.net; s=mail; t=1556240004; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=N+xC6ecj2cktFF1lLWvW5SCw/H7rVP54BzodulaEzC8=; b=k3+Y9U9V2Va669cmrmYC65bTYSFWMtS7+NTFnBR67dH1sHn4UWiShekq468xV8iqgLho1F wPsXZMH6Eta5yjG/l2+wBcQ7zii31FchpKE2aeUOX7J3diwXxTsBHmKDoufrM+OZLq0n5x tEQ9i08ZAYZTMai8txBipBpMTUbnfMQ= X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, Artur Rojek , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, Paul Cercueil , od@zcrc.me Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP Add a KMS driver for the Ingenic JZ47xx family of SoCs. This driver is meant to replace the aging jz4740-fb driver. This driver does not make use of the simple pipe helper, for the reason that it will soon be updated to support more advanced features like multiple planes, IPU integration for colorspace conversion and up/down scaling, support for DSI displays, and TV-out and HDMI outputs. Signed-off-by: Paul Cercueil Tested-by: Artur Rojek --- Notes: v2: - Remove custom handling of panel. The panel is now discovered using the standard API. - Lots of small tweaks suggested by upstream v3: - Use devm_drm_dev_init() - Update compatible strings to -lcd instead of -drm - Add destroy() callbacks to plane and crtc - The ingenic,lcd-mode is now read from the bridge's DT node v4: Remove ingenic,lcd-mode property completely. The various modes are now deduced from the connector type, the pixel format or the bus flags. drivers/gpu/drm/Kconfig | 2 + drivers/gpu/drm/Makefile | 1 + drivers/gpu/drm/ingenic/Kconfig | 16 + drivers/gpu/drm/ingenic/Makefile | 1 + drivers/gpu/drm/ingenic/ingenic-drm.c | 835 ++++++++++++++++++++++++++ 5 files changed, 855 insertions(+) create mode 100644 drivers/gpu/drm/ingenic/Kconfig create mode 100644 drivers/gpu/drm/ingenic/Makefile create mode 100644 drivers/gpu/drm/ingenic/ingenic-drm.c diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig index 39d5f7562f1c..6863223c61d5 100644 --- a/drivers/gpu/drm/Kconfig +++ b/drivers/gpu/drm/Kconfig @@ -307,6 +307,8 @@ source "drivers/gpu/drm/sti/Kconfig" source "drivers/gpu/drm/imx/Kconfig" +source "drivers/gpu/drm/ingenic/Kconfig" + source "drivers/gpu/drm/v3d/Kconfig" source "drivers/gpu/drm/vc4/Kconfig" diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile index 3d0c75cd687c..1c2aca7965bd 100644 --- a/drivers/gpu/drm/Makefile +++ b/drivers/gpu/drm/Makefile @@ -95,6 +95,7 @@ obj-$(CONFIG_DRM_TEGRA) += tegra/ obj-$(CONFIG_DRM_STM) += stm/ obj-$(CONFIG_DRM_STI) += sti/ obj-$(CONFIG_DRM_IMX) += imx/ +obj-$(CONFIG_DRM_INGENIC) += ingenic/ obj-$(CONFIG_DRM_MEDIATEK) += mediatek/ obj-$(CONFIG_DRM_MESON) += meson/ obj-y += i2c/ diff --git a/drivers/gpu/drm/ingenic/Kconfig b/drivers/gpu/drm/ingenic/Kconfig new file mode 100644 index 000000000000..d82c3d37ec9c --- /dev/null +++ b/drivers/gpu/drm/ingenic/Kconfig @@ -0,0 +1,16 @@ +config DRM_INGENIC + tristate "DRM Support for Ingenic SoCs" + depends on MIPS || COMPILE_TEST + depends on DRM + depends on CMA + depends on OF + select DRM_BRIDGE + select DRM_PANEL_BRIDGE + select DRM_KMS_HELPER + select DRM_KMS_CMA_HELPER + select DRM_GEM_CMA_HELPER + select VT_HW_CONSOLE_BINDING if FRAMEBUFFER_CONSOLE + help + Choose this option for DRM support for the Ingenic SoCs. + + If M is selected the module will be called ingenic-drm. diff --git a/drivers/gpu/drm/ingenic/Makefile b/drivers/gpu/drm/ingenic/Makefile new file mode 100644 index 000000000000..11cac42ce0bb --- /dev/null +++ b/drivers/gpu/drm/ingenic/Makefile @@ -0,0 +1 @@ +obj-$(CONFIG_DRM_INGENIC) += ingenic-drm.o diff --git a/drivers/gpu/drm/ingenic/ingenic-drm.c b/drivers/gpu/drm/ingenic/ingenic-drm.c new file mode 100644 index 000000000000..b000a910d480 --- /dev/null +++ b/drivers/gpu/drm/ingenic/ingenic-drm.c @@ -0,0 +1,835 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// Ingenic JZ47xx KMS driver +// +// Copyright (C) 2019, Paul Cercueil + +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define JZ_REG_LCD_CFG 0x00 +#define JZ_REG_LCD_VSYNC 0x04 +#define JZ_REG_LCD_HSYNC 0x08 +#define JZ_REG_LCD_VAT 0x0C +#define JZ_REG_LCD_DAH 0x10 +#define JZ_REG_LCD_DAV 0x14 +#define JZ_REG_LCD_PS 0x18 +#define JZ_REG_LCD_CLS 0x1C +#define JZ_REG_LCD_SPL 0x20 +#define JZ_REG_LCD_REV 0x24 +#define JZ_REG_LCD_CTRL 0x30 +#define JZ_REG_LCD_STATE 0x34 +#define JZ_REG_LCD_IID 0x38 +#define JZ_REG_LCD_DA0 0x40 +#define JZ_REG_LCD_SA0 0x44 +#define JZ_REG_LCD_FID0 0x48 +#define JZ_REG_LCD_CMD0 0x4C +#define JZ_REG_LCD_DA1 0x50 +#define JZ_REG_LCD_SA1 0x54 +#define JZ_REG_LCD_FID1 0x58 +#define JZ_REG_LCD_CMD1 0x5C + +#define JZ_LCD_CFG_SLCD BIT(31) +#define JZ_LCD_CFG_PS_DISABLE BIT(23) +#define JZ_LCD_CFG_CLS_DISABLE BIT(22) +#define JZ_LCD_CFG_SPL_DISABLE BIT(21) +#define JZ_LCD_CFG_REV_DISABLE BIT(20) +#define JZ_LCD_CFG_HSYNCM BIT(19) +#define JZ_LCD_CFG_PCLKM BIT(18) +#define JZ_LCD_CFG_INV BIT(17) +#define JZ_LCD_CFG_SYNC_DIR BIT(16) +#define JZ_LCD_CFG_PS_POLARITY BIT(15) +#define JZ_LCD_CFG_CLS_POLARITY BIT(14) +#define JZ_LCD_CFG_SPL_POLARITY BIT(13) +#define JZ_LCD_CFG_REV_POLARITY BIT(12) +#define JZ_LCD_CFG_HSYNC_ACTIVE_LOW BIT(11) +#define JZ_LCD_CFG_PCLK_FALLING_EDGE BIT(10) +#define JZ_LCD_CFG_DE_ACTIVE_LOW BIT(9) +#define JZ_LCD_CFG_VSYNC_ACTIVE_LOW BIT(8) +#define JZ_LCD_CFG_18_BIT BIT(7) +#define JZ_LCD_CFG_PDW (BIT(5) | BIT(4)) + +#define JZ_LCD_CFG_MODE_GENERIC_16BIT 0 +#define JZ_LCD_CFG_MODE_GENERIC_18BIT BIT(7) +#define JZ_LCD_CFG_MODE_GENERIC_24BIT BIT(6) + +#define JZ_LCD_CFG_MODE_SPECIAL_TFT_1 1 +#define JZ_LCD_CFG_MODE_SPECIAL_TFT_2 2 +#define JZ_LCD_CFG_MODE_SPECIAL_TFT_3 3 + +#define JZ_LCD_CFG_MODE_TV_OUT_P 4 +#define JZ_LCD_CFG_MODE_TV_OUT_I 6 + +#define JZ_LCD_CFG_MODE_SINGLE_COLOR_STN 8 +#define JZ_LCD_CFG_MODE_SINGLE_MONOCHROME_STN 9 +#define JZ_LCD_CFG_MODE_DUAL_COLOR_STN 10 +#define JZ_LCD_CFG_MODE_DUAL_MONOCHROME_STN 11 + +#define JZ_LCD_CFG_MODE_8BIT_SERIAL 12 +#define JZ_LCD_CFG_MODE_LCM 13 + +#define JZ_LCD_VSYNC_VPS_OFFSET 16 +#define JZ_LCD_VSYNC_VPE_OFFSET 0 + +#define JZ_LCD_HSYNC_HPS_OFFSET 16 +#define JZ_LCD_HSYNC_HPE_OFFSET 0 + +#define JZ_LCD_VAT_HT_OFFSET 16 +#define JZ_LCD_VAT_VT_OFFSET 0 + +#define JZ_LCD_DAH_HDS_OFFSET 16 +#define JZ_LCD_DAH_HDE_OFFSET 0 + +#define JZ_LCD_DAV_VDS_OFFSET 16 +#define JZ_LCD_DAV_VDE_OFFSET 0 + +#define JZ_LCD_CTRL_BURST_4 (0x0 << 28) +#define JZ_LCD_CTRL_BURST_8 (0x1 << 28) +#define JZ_LCD_CTRL_BURST_16 (0x2 << 28) +#define JZ_LCD_CTRL_RGB555 BIT(27) +#define JZ_LCD_CTRL_OFUP BIT(26) +#define JZ_LCD_CTRL_FRC_GRAYSCALE_16 (0x0 << 24) +#define JZ_LCD_CTRL_FRC_GRAYSCALE_4 (0x1 << 24) +#define JZ_LCD_CTRL_FRC_GRAYSCALE_2 (0x2 << 24) +#define JZ_LCD_CTRL_PDD_MASK (0xff << 16) +#define JZ_LCD_CTRL_EOF_IRQ BIT(13) +#define JZ_LCD_CTRL_SOF_IRQ BIT(12) +#define JZ_LCD_CTRL_OFU_IRQ BIT(11) +#define JZ_LCD_CTRL_IFU0_IRQ BIT(10) +#define JZ_LCD_CTRL_IFU1_IRQ BIT(9) +#define JZ_LCD_CTRL_DD_IRQ BIT(8) +#define JZ_LCD_CTRL_QDD_IRQ BIT(7) +#define JZ_LCD_CTRL_REVERSE_ENDIAN BIT(6) +#define JZ_LCD_CTRL_LSB_FISRT BIT(5) +#define JZ_LCD_CTRL_DISABLE BIT(4) +#define JZ_LCD_CTRL_ENABLE BIT(3) +#define JZ_LCD_CTRL_BPP_1 0x0 +#define JZ_LCD_CTRL_BPP_2 0x1 +#define JZ_LCD_CTRL_BPP_4 0x2 +#define JZ_LCD_CTRL_BPP_8 0x3 +#define JZ_LCD_CTRL_BPP_15_16 0x4 +#define JZ_LCD_CTRL_BPP_18_24 0x5 +#define JZ_LCD_CTRL_BPP_MASK (JZ_LCD_CTRL_RGB555 | (0x7 << 0)) + +#define JZ_LCD_CMD_SOF_IRQ BIT(31) +#define JZ_LCD_CMD_EOF_IRQ BIT(30) +#define JZ_LCD_CMD_ENABLE_PAL BIT(28) + +#define JZ_LCD_SYNC_MASK 0x3ff + +#define JZ_LCD_STATE_EOF_IRQ BIT(5) +#define JZ_LCD_STATE_SOF_IRQ BIT(4) +#define JZ_LCD_STATE_DISABLED BIT(0) + +struct ingenic_dma_hwdesc { + u32 next; + u32 addr; + u32 id; + u32 cmd; +} __packed; + +struct jz_soc_info { + bool needs_dev_clk; +}; + +struct ingenic_drm { + struct drm_device drm; + struct drm_plane primary; + struct drm_crtc crtc; + struct drm_encoder encoder; + + struct device *dev; + struct regmap *map; + struct clk *lcd_clk, *pix_clk; + + struct ingenic_dma_hwdesc *dma_hwdesc; + dma_addr_t dma_hwdesc_phys; +}; + +static const u32 ingenic_drm_primary_formats[] = { + DRM_FORMAT_XRGB1555, + DRM_FORMAT_RGB565, + DRM_FORMAT_XRGB8888, +}; + +static bool ingenic_drm_writeable_reg(struct device *dev, unsigned int reg) +{ + switch (reg) { + case JZ_REG_LCD_IID: + case JZ_REG_LCD_SA0: + case JZ_REG_LCD_FID0: + case JZ_REG_LCD_CMD0: + case JZ_REG_LCD_SA1: + case JZ_REG_LCD_FID1: + case JZ_REG_LCD_CMD1: + return false; + default: + return true; + } +} + +static const struct regmap_config ingenic_drm_regmap_config = { + .reg_bits = 32, + .val_bits = 32, + .reg_stride = 4, + + .max_register = JZ_REG_LCD_CMD1, + .writeable_reg = ingenic_drm_writeable_reg, +}; + +static inline struct ingenic_drm *drm_device_get_priv(struct drm_device *drm) +{ + return container_of(drm, struct ingenic_drm, drm); +} + +static inline struct ingenic_drm *drm_crtc_get_priv(struct drm_crtc *crtc) +{ + return container_of(crtc, struct ingenic_drm, crtc); +} + +static inline struct ingenic_drm * +drm_encoder_get_priv(struct drm_encoder *encoder) +{ + return container_of(encoder, struct ingenic_drm, encoder); +} + +static inline struct ingenic_drm *drm_plane_get_priv(struct drm_plane *plane) +{ + return container_of(plane, struct ingenic_drm, primary); +} + +static void ingenic_drm_crtc_atomic_enable(struct drm_crtc *crtc, + struct drm_crtc_state *state) +{ + struct ingenic_drm *priv = drm_crtc_get_priv(crtc); + + regmap_write(priv->map, JZ_REG_LCD_STATE, 0); + + regmap_update_bits(priv->map, JZ_REG_LCD_CTRL, + JZ_LCD_CTRL_ENABLE | JZ_LCD_CTRL_DISABLE, + JZ_LCD_CTRL_ENABLE); + + drm_crtc_vblank_on(crtc); +} + +static void ingenic_drm_crtc_atomic_disable(struct drm_crtc *crtc, + struct drm_crtc_state *state) +{ + struct ingenic_drm *priv = drm_crtc_get_priv(crtc); + unsigned int var; + + drm_crtc_vblank_off(crtc); + + regmap_update_bits(priv->map, JZ_REG_LCD_CTRL, + JZ_LCD_CTRL_DISABLE, JZ_LCD_CTRL_DISABLE); + + regmap_read_poll_timeout(priv->map, JZ_REG_LCD_STATE, var, + var & JZ_LCD_STATE_DISABLED, + 1000, 0); +} + +static void ingenic_drm_crtc_update_timings(struct ingenic_drm *priv, + struct drm_display_mode *mode) +{ + unsigned int vpe, vds, vde, vt, hpe, hds, hde, ht; + + vpe = mode->vsync_end - mode->vsync_start; + vds = mode->vtotal - mode->vsync_start; + vde = vds + mode->vdisplay; + vt = vde + mode->vsync_start - mode->vdisplay; + + hpe = mode->hsync_end - mode->hsync_start; + hds = mode->htotal - mode->hsync_start; + hde = hds + mode->hdisplay; + ht = hde + mode->hsync_start - mode->hdisplay; + + regmap_write(priv->map, JZ_REG_LCD_VSYNC, + 0 << JZ_LCD_VSYNC_VPS_OFFSET | + vpe << JZ_LCD_VSYNC_VPE_OFFSET); + + regmap_write(priv->map, JZ_REG_LCD_HSYNC, + 0 << JZ_LCD_HSYNC_HPS_OFFSET | + hpe << JZ_LCD_HSYNC_HPE_OFFSET); + + regmap_write(priv->map, JZ_REG_LCD_VAT, + ht << JZ_LCD_VAT_HT_OFFSET | + vt << JZ_LCD_VAT_VT_OFFSET); + + regmap_write(priv->map, JZ_REG_LCD_DAH, + hds << JZ_LCD_DAH_HDS_OFFSET | + hde << JZ_LCD_DAH_HDE_OFFSET); + regmap_write(priv->map, JZ_REG_LCD_DAV, + vds << JZ_LCD_DAV_VDS_OFFSET | + vde << JZ_LCD_DAV_VDE_OFFSET); +} + +static void ingenic_drm_crtc_update_ctrl(struct ingenic_drm *priv, + unsigned int bpp) +{ + unsigned int ctrl = JZ_LCD_CTRL_OFUP | JZ_LCD_CTRL_BURST_16; + + switch (bpp) { + case 1: + ctrl |= JZ_LCD_CTRL_BPP_1; + break; + case 2: + ctrl |= JZ_LCD_CTRL_BPP_2; + break; + case 4: + ctrl |= JZ_LCD_CTRL_BPP_4; + break; + case 8: + ctrl |= JZ_LCD_CTRL_BPP_8; + break; + case 15: + ctrl |= JZ_LCD_CTRL_RGB555; + /* fall-through */ + case 16: + ctrl |= JZ_LCD_CTRL_BPP_15_16; + break; + case 18: + case 24: + case 32: + ctrl |= JZ_LCD_CTRL_BPP_18_24; + break; + default: + break; + } + + regmap_update_bits(priv->map, JZ_REG_LCD_CTRL, + JZ_LCD_CTRL_OFUP | JZ_LCD_CTRL_BURST_16 | + JZ_LCD_CTRL_BPP_MASK, ctrl); +} + +static int ingenic_drm_crtc_atomic_check(struct drm_crtc *crtc, + struct drm_crtc_state *state) +{ + struct ingenic_drm *priv = drm_crtc_get_priv(crtc); + long rate; + + if (!drm_atomic_crtc_needs_modeset(state)) + return 0; + + rate = clk_round_rate(priv->pix_clk, + state->adjusted_mode.clock * 1000); + if (rate < 0) + return rate; + + return 0; +} + +static void ingenic_drm_crtc_atomic_flush(struct drm_crtc *crtc, + struct drm_crtc_state *oldstate) +{ + struct ingenic_drm *priv = drm_crtc_get_priv(crtc); + struct drm_crtc_state *state = crtc->state; + struct drm_pending_vblank_event *event = state->event; + struct drm_framebuffer *drm_fb = crtc->primary->state->fb; + const struct drm_format_info *finfo; + + if (drm_atomic_crtc_needs_modeset(state)) { + finfo = drm_format_info(drm_fb->format->format); + + ingenic_drm_crtc_update_timings(priv, &state->mode); + ingenic_drm_crtc_update_ctrl(priv, finfo->depth); + + clk_set_rate(priv->pix_clk, state->adjusted_mode.clock * 1000); + + regmap_write(priv->map, JZ_REG_LCD_DA0, priv->dma_hwdesc->next); + } + + if (event) { + state->event = NULL; + + spin_lock_irq(&crtc->dev->event_lock); + if (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); + } +} + +static void ingenic_drm_plane_atomic_update(struct drm_plane *plane, + struct drm_plane_state *oldstate) +{ + struct ingenic_drm *priv = drm_plane_get_priv(plane); + struct drm_plane_state *state = plane->state; + const struct drm_format_info *finfo; + unsigned int width, height; + + finfo = drm_format_info(state->fb->format->format); + width = state->crtc->state->adjusted_mode.hdisplay; + height = state->crtc->state->adjusted_mode.vdisplay; + + priv->dma_hwdesc->addr = drm_fb_cma_get_gem_addr(state->fb, state, 0); + + priv->dma_hwdesc->cmd = width * height * ((finfo->depth + 7) / 8) / 4; + priv->dma_hwdesc->cmd |= JZ_LCD_CMD_EOF_IRQ; +} + +static void ingenic_drm_encoder_atomic_mode_set(struct drm_encoder *encoder, + struct drm_crtc_state *crtc_state, + struct drm_connector_state *conn_state) +{ + struct ingenic_drm *priv = drm_encoder_get_priv(encoder); + struct drm_display_mode *mode = &crtc_state->adjusted_mode; + struct drm_display_info *info = &conn_state->connector->display_info; + unsigned int cfg = JZ_LCD_CFG_PS_DISABLE + | JZ_LCD_CFG_CLS_DISABLE + | JZ_LCD_CFG_SPL_DISABLE + | JZ_LCD_CFG_REV_DISABLE; + + if (mode->flags & DRM_MODE_FLAG_NHSYNC) + cfg |= JZ_LCD_CFG_HSYNC_ACTIVE_LOW; + if (mode->flags & DRM_MODE_FLAG_NVSYNC) + cfg |= JZ_LCD_CFG_VSYNC_ACTIVE_LOW; + if (info->bus_flags & DRM_BUS_FLAG_DE_LOW) + cfg |= JZ_LCD_CFG_DE_ACTIVE_LOW; + if (info->bus_flags & DRM_BUS_FLAG_PIXDATA_NEGEDGE) + cfg |= JZ_LCD_CFG_PCLK_FALLING_EDGE; + + if (conn_state->connector->connector_type == DRM_MODE_CONNECTOR_TV) { + if (mode->flags & DRM_MODE_FLAG_INTERLACE) + cfg |= JZ_LCD_CFG_MODE_TV_OUT_I; + else + cfg |= JZ_LCD_CFG_MODE_TV_OUT_P; + } else { + switch (*info->bus_formats) { + case MEDIA_BUS_FMT_RGB565_1X16: + cfg |= JZ_LCD_CFG_MODE_GENERIC_16BIT; + break; + case MEDIA_BUS_FMT_RGB666_1X18: + cfg |= JZ_LCD_CFG_MODE_GENERIC_18BIT; + break; + case MEDIA_BUS_FMT_RGB888_1X24: + cfg |= JZ_LCD_CFG_MODE_GENERIC_24BIT; + break; + default: + break; + } + } + + regmap_write(priv->map, JZ_REG_LCD_CFG, cfg); +} + +static int ingenic_drm_encoder_atomic_check(struct drm_encoder *encoder, + struct drm_crtc_state *crtc_state, + struct drm_connector_state *conn_state) +{ + struct drm_display_info *info = &conn_state->connector->display_info; + + if (info->num_bus_formats != 1) + return -EINVAL; + + if (conn_state->connector->connector_type == DRM_MODE_CONNECTOR_TV) + return 0; + + switch (*info->bus_formats) { + case MEDIA_BUS_FMT_RGB565_1X16: + case MEDIA_BUS_FMT_RGB666_1X18: + return 0; + default: + return -EINVAL; + } +} + +static irqreturn_t ingenic_drm_irq_handler(int irq, void *arg) +{ + struct ingenic_drm *priv = arg; + unsigned int state; + + regmap_read(priv->map, JZ_REG_LCD_STATE, &state); + + regmap_update_bits(priv->map, JZ_REG_LCD_STATE, + JZ_LCD_STATE_EOF_IRQ, 0); + + if (state & JZ_LCD_STATE_EOF_IRQ) + drm_crtc_handle_vblank(&priv->crtc); + + return IRQ_HANDLED; +} + +static void ingenic_drm_release(struct drm_device *drm) +{ + struct ingenic_drm *priv = drm_device_get_priv(drm); + + drm_mode_config_cleanup(drm); + drm_dev_fini(drm); + kfree(priv); +} + +static int ingenic_drm_enable_vblank(struct drm_crtc *crtc) +{ + struct ingenic_drm *priv = drm_crtc_get_priv(crtc); + + regmap_update_bits(priv->map, JZ_REG_LCD_CTRL, + JZ_LCD_CTRL_EOF_IRQ, JZ_LCD_CTRL_EOF_IRQ); + + return 0; +} + +static void ingenic_drm_disable_vblank(struct drm_crtc *crtc) +{ + struct ingenic_drm *priv = drm_crtc_get_priv(crtc); + + regmap_update_bits(priv->map, JZ_REG_LCD_CTRL, JZ_LCD_CTRL_EOF_IRQ, 0); +} + +DEFINE_DRM_GEM_CMA_FOPS(ingenic_drm_fops); + +static struct drm_driver ingenic_drm_driver_data = { + .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME + | DRIVER_ATOMIC, + .name = "ingenic-drm", + .desc = "DRM module for Ingenic SoCs", + .date = "20190422", + .major = 1, + .minor = 0, + .patchlevel = 0, + + .fops = &ingenic_drm_fops, + + .dumb_create = drm_gem_cma_dumb_create, + .gem_free_object_unlocked = drm_gem_cma_free_object, + .gem_vm_ops = &drm_gem_cma_vm_ops, + + .prime_handle_to_fd = drm_gem_prime_handle_to_fd, + .prime_fd_to_handle = drm_gem_prime_fd_to_handle, + .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, + + .irq_handler = ingenic_drm_irq_handler, + .release = ingenic_drm_release, +}; + +static const struct drm_plane_funcs ingenic_drm_primary_plane_funcs = { + .update_plane = drm_atomic_helper_update_plane, + .disable_plane = drm_atomic_helper_disable_plane, + .reset = drm_atomic_helper_plane_reset, + .destroy = drm_plane_cleanup, + + .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state, + .atomic_destroy_state = drm_atomic_helper_plane_destroy_state, +}; + +static const struct drm_crtc_funcs ingenic_drm_crtc_funcs = { + .set_config = drm_atomic_helper_set_config, + .page_flip = drm_atomic_helper_page_flip, + .reset = drm_atomic_helper_crtc_reset, + .destroy = drm_crtc_cleanup, + + .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state, + .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state, + + .enable_vblank = ingenic_drm_enable_vblank, + .disable_vblank = ingenic_drm_disable_vblank, + + .gamma_set = drm_atomic_helper_legacy_gamma_set, +}; + +static const struct drm_plane_helper_funcs ingenic_drm_plane_helper_funcs = { + .atomic_update = ingenic_drm_plane_atomic_update, + .prepare_fb = drm_gem_fb_prepare_fb, +}; + +static const struct drm_crtc_helper_funcs ingenic_drm_crtc_helper_funcs = { + .atomic_enable = ingenic_drm_crtc_atomic_enable, + .atomic_disable = ingenic_drm_crtc_atomic_disable, + .atomic_flush = ingenic_drm_crtc_atomic_flush, + .atomic_check = ingenic_drm_crtc_atomic_check, +}; + +static const struct drm_encoder_helper_funcs ingenic_drm_encoder_helper_funcs = { + .atomic_mode_set = ingenic_drm_encoder_atomic_mode_set, + .atomic_check = ingenic_drm_encoder_atomic_check, +}; + +static const struct drm_mode_config_funcs ingenic_drm_mode_config_funcs = { + .fb_create = drm_gem_fb_create, + .output_poll_changed = drm_fb_helper_output_poll_changed, + .atomic_check = drm_atomic_helper_check, + .atomic_commit = drm_atomic_helper_commit, +}; + +static const struct drm_encoder_funcs ingenic_drm_encoder_funcs = { + .destroy = drm_encoder_cleanup, +}; + +static void ingenic_drm_free_dma_hwdesc(void *d) +{ + struct ingenic_drm *priv = d; + + dma_free_coherent(priv->dev, sizeof(*priv->dma_hwdesc), + priv->dma_hwdesc, priv->dma_hwdesc_phys); +} + +static int ingenic_drm_probe(struct platform_device *pdev) +{ + const struct jz_soc_info *soc_info; + struct device *dev = &pdev->dev; + struct ingenic_drm *priv; + struct clk *parent_clk; + struct drm_bridge *bridge; + struct drm_panel *panel; + struct drm_device *drm; + struct resource *mem; + void __iomem *base; + long parent_rate; + int ret, irq; + + soc_info = of_device_get_match_data(dev); + if (!soc_info) { + dev_err(dev, "Missing platform data\n"); + return -EINVAL; + } + + priv = kzalloc(sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->dev = dev; + drm = &priv->drm; + drm->dev_private = priv; + + platform_set_drvdata(pdev, priv); + + ret = devm_drm_dev_init(dev, drm, &ingenic_drm_driver_data); + if (ret) { + kfree(priv); + return ret; + } + + drm_mode_config_init(drm); + drm->mode_config.min_width = 0; + drm->mode_config.min_height = 0; + drm->mode_config.max_width = 800; + drm->mode_config.max_height = 600; + drm->mode_config.funcs = &ingenic_drm_mode_config_funcs; + + mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); + base = devm_ioremap_resource(dev, mem); + if (IS_ERR(base)) { + dev_err(dev, "Failed to get memory resource"); + return PTR_ERR(base); + } + + priv->map = devm_regmap_init_mmio(dev, base, + &ingenic_drm_regmap_config); + if (IS_ERR(priv->map)) { + dev_err(dev, "Failed to create regmap"); + return PTR_ERR(priv->map); + } + + irq = platform_get_irq(pdev, 0); + if (irq < 0) { + dev_err(dev, "Failed to get platform irq"); + return irq; + } + + if (soc_info->needs_dev_clk) { + priv->lcd_clk = devm_clk_get(dev, "lcd"); + if (IS_ERR(priv->lcd_clk)) { + dev_err(dev, "Failed to get lcd clock"); + return PTR_ERR(priv->lcd_clk); + } + } + + priv->pix_clk = devm_clk_get(dev, "lcd_pclk"); + if (IS_ERR(priv->pix_clk)) { + dev_err(dev, "Failed to get pixel clock"); + return PTR_ERR(priv->pix_clk); + } + + ret = drm_of_find_panel_or_bridge(dev->of_node, 0, 0, &panel, &bridge); + if (ret) { + if (ret != -EPROBE_DEFER) + dev_err(dev, "Failed to get panel handle"); + return ret; + } + + if (panel) { + bridge = devm_drm_panel_bridge_add(dev, panel, + DRM_MODE_CONNECTOR_Unknown); + } + + priv->dma_hwdesc = dma_alloc_coherent(dev, sizeof(*priv->dma_hwdesc), + &priv->dma_hwdesc_phys, + GFP_KERNEL); + if (!priv->dma_hwdesc) + return -ENOMEM; + + ret = devm_add_action_or_reset(dev, ingenic_drm_free_dma_hwdesc, priv); + if (ret) + return ret; + + priv->dma_hwdesc->next = priv->dma_hwdesc_phys; + priv->dma_hwdesc->id = 0xdeafbead; + + drm_plane_helper_add(&priv->primary, &ingenic_drm_plane_helper_funcs); + + ret = drm_universal_plane_init(drm, &priv->primary, + 0, &ingenic_drm_primary_plane_funcs, + ingenic_drm_primary_formats, + ARRAY_SIZE(ingenic_drm_primary_formats), + NULL, DRM_PLANE_TYPE_PRIMARY, NULL); + if (ret) { + dev_err(dev, "Failed to register primary plane: %i", ret); + return ret; + } + + drm_crtc_helper_add(&priv->crtc, &ingenic_drm_crtc_helper_funcs); + + ret = drm_crtc_init_with_planes(drm, &priv->crtc, &priv->primary, + NULL, &ingenic_drm_crtc_funcs, NULL); + if (ret) { + dev_err(dev, "Failed to init CRTC: %i", ret); + return ret; + } + + priv->encoder.possible_crtcs = 1; + + drm_encoder_helper_add(&priv->encoder, + &ingenic_drm_encoder_helper_funcs); + + ret = drm_encoder_init(drm, &priv->encoder, &ingenic_drm_encoder_funcs, + DRM_MODE_ENCODER_DPI, NULL); + if (ret) { + dev_err(dev, "Failed to init encoder: %i", ret); + return ret; + } + + ret = drm_bridge_attach(&priv->encoder, bridge, NULL); + if (ret) { + dev_err(dev, "Unable to attach bridge"); + return ret; + } + + ret = drm_irq_install(drm, irq); + if (ret) { + dev_err(dev, "Unable to install IRQ handler"); + return ret; + } + + ret = drm_vblank_init(drm, 1); + if (ret) { + dev_err(dev, "Failed calling drm_vblank_init()"); + return ret; + } + + drm_mode_config_reset(drm); + + ret = clk_prepare_enable(priv->pix_clk); + if (ret) { + dev_err(dev, "Unable to start pixel clock"); + return ret; + } + + if (priv->lcd_clk) { + parent_clk = clk_get_parent(priv->lcd_clk); + parent_rate = clk_get_rate(parent_clk); + + /* LCD Device clock must be 3x the pixel clock for STN panels, + * or 1.5x the pixel clock for TFT panels. To avoid having to + * check for the LCD device clock everytime we do a mode change, + * we set the LCD device clock to the highest rate possible. + */ + ret = clk_set_rate(priv->lcd_clk, parent_rate); + if (ret) { + dev_err(dev, "Unable to set LCD clock rate"); + goto err_pixclk_disable; + } + + ret = clk_prepare_enable(priv->lcd_clk); + if (ret) { + dev_err(dev, "Unable to start lcd clock"); + goto err_pixclk_disable; + } + } + + ret = drm_dev_register(drm, 0); + if (ret) { + dev_err(dev, "Failed to register DRM driver"); + goto err_devclk_disable; + } + + ret = drm_fbdev_generic_setup(drm, 16); + if (ret) + dev_warn(dev, "Unable to start fbdev emulation: %i", ret); + + return 0; + +err_devclk_disable: + if (priv->lcd_clk) + clk_disable_unprepare(priv->lcd_clk); +err_pixclk_disable: + clk_disable_unprepare(priv->pix_clk); + return ret; +} + +static int ingenic_drm_remove(struct platform_device *pdev) +{ + struct ingenic_drm *priv = platform_get_drvdata(pdev); + + if (priv->lcd_clk) + clk_disable_unprepare(priv->lcd_clk); + clk_disable_unprepare(priv->pix_clk); + + drm_dev_unregister(&priv->drm); + drm_atomic_helper_shutdown(&priv->drm); + + return 0; +} + +static const struct jz_soc_info jz4740_soc_info = { + .needs_dev_clk = true, +}; + +static const struct jz_soc_info jz4725b_soc_info = { + .needs_dev_clk = false, +}; + +static const struct of_device_id ingenic_drm_of_match[] = { + { .compatible = "ingenic,jz4740-lcd", .data = &jz4740_soc_info }, + { .compatible = "ingenic,jz4725b-lcd", .data = &jz4725b_soc_info }, + { /* sentinel */ }, +}; + +static struct platform_driver ingenic_drm_driver = { + .driver = { + .name = "ingenic-drm", + .of_match_table = of_match_ptr(ingenic_drm_of_match), + }, + .probe = ingenic_drm_probe, + .remove = ingenic_drm_remove, +}; +module_platform_driver(ingenic_drm_driver); + +MODULE_AUTHOR("Paul Cercueil "); +MODULE_DESCRIPTION("DRM driver for the Ingenic SoCs\n"); +MODULE_LICENSE("GPL v2");