From patchwork Fri Feb 3 09:59:06 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maxime Ripard X-Patchwork-Id: 9553749 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id E6CE0604A7 for ; Fri, 3 Feb 2017 09:59:29 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D749F2831C for ; Fri, 3 Feb 2017 09:59:29 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id CC31F284F1; Fri, 3 Feb 2017 09:59:29 +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=-4.2 required=2.0 tests=BAYES_00, 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 1C0F42831C for ; Fri, 3 Feb 2017 09:59:29 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id D80206EB40; Fri, 3 Feb 2017 09:59:23 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mail.free-electrons.com (mail.free-electrons.com [62.4.15.54]) by gabe.freedesktop.org (Postfix) with ESMTP id 8E2676EB3D for ; Fri, 3 Feb 2017 09:59:21 +0000 (UTC) Received: by mail.free-electrons.com (Postfix, from userid 110) id 43D8D20DB2; Fri, 3 Feb 2017 10:59:20 +0100 (CET) Received: from localhost (LStLambert-657-1-97-87.w90-63.abo.wanadoo.fr [90.63.216.87]) by mail.free-electrons.com (Postfix) with ESMTPSA id 114AD20B7C; Fri, 3 Feb 2017 10:59:10 +0100 (CET) From: Maxime Ripard To: Rob Herring , Mark Rutland , Thierry Reding Subject: [PATCH 2/2] drm/panel: Add driver for sitronix ST7789V panel Date: Fri, 3 Feb 2017 10:59:06 +0100 Message-Id: <8194211279dd2d1b1c2e88a3c17d154c356bbbc7.1486115846.git-series.maxime.ripard@free-electrons.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: References: In-Reply-To: References: Cc: devicetree@vger.kernel.org, Maxime Ripard , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP Signed-off-by: Maxime Ripard --- drivers/gpu/drm/panel/Kconfig | 4 +- drivers/gpu/drm/panel/Makefile | 1 +- drivers/gpu/drm/panel/panel-sitronix-st7789v.c | 435 ++++++++++++++++++- 3 files changed, 440 insertions(+), 0 deletions(-) create mode 100644 drivers/gpu/drm/panel/panel-sitronix-st7789v.c diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig index 62aba976e744..d07b996a07b8 100644 --- a/drivers/gpu/drm/panel/Kconfig +++ b/drivers/gpu/drm/panel/Kconfig @@ -81,4 +81,8 @@ config DRM_PANEL_SHARP_LS043T1LE01 Say Y here if you want to enable support for Sharp LS043T1LE01 qHD (540x960) DSI panel as found on the Qualcomm APQ8074 Dragonboard +config DRM_PANEL_SITRONIX_ST7789V + tristate "Sitronx ST7789V panel" + depends on OF && SPI + endmenu diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile index a5c7ec0236e0..41b245d39984 100644 --- a/drivers/gpu/drm/panel/Makefile +++ b/drivers/gpu/drm/panel/Makefile @@ -6,3 +6,4 @@ obj-$(CONFIG_DRM_PANEL_SAMSUNG_LD9040) += panel-samsung-ld9040.o obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E8AA0) += panel-samsung-s6e8aa0.o obj-$(CONFIG_DRM_PANEL_SHARP_LQ101R1SX01) += panel-sharp-lq101r1sx01.o obj-$(CONFIG_DRM_PANEL_SHARP_LS043T1LE01) += panel-sharp-ls043t1le01.o +obj-$(CONFIG_DRM_PANEL_SITRONIX_ST7789V) += panel-sitronix-st7789v.o diff --git a/drivers/gpu/drm/panel/panel-sitronix-st7789v.c b/drivers/gpu/drm/panel/panel-sitronix-st7789v.c new file mode 100644 index 000000000000..aab817b55aa6 --- /dev/null +++ b/drivers/gpu/drm/panel/panel-sitronix-st7789v.c @@ -0,0 +1,435 @@ +/* + * Copyright (C) 2017 Free Electrons + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License version + * 2 as published by the Free Software Foundation. + */ + +#include +#include + +#include +#include + +#define ST7789V_SLPIN_CMD 0x10 + +#define ST7789V_SLPOUT_CMD 0x11 + +#define ST7789V_INVON_CMD 0x21 + +#define ST7789V_DISPOFF_CMD 0x28 + +#define ST7789V_DISPON_CMD 0x29 + +#define ST7789V_MADCTL_CMD 0x36 + +#define ST7789V_COLMOD_CMD 0x3a +#define ST7789V_COLMOD_RGB_FMT_18BITS (6 << 4) +#define ST7789V_COLMOD_CTRL_FMT_18BITS (6 << 0) + +#define ST7789V_RAMCTRL_CMD 0xb0 +#define ST7789V_RAMCTRL_RM_RGB BIT(4) +#define ST7789V_RAMCTRL_DM_RGB BIT(0) +#define ST7789V_RAMCTRL_MAGIC (3 << 6) +#define ST7789V_RAMCTRL_EPF(n) (((n) & 3) << 4) + +#define ST7789V_RGBCTRL_CMD 0xb1 +#define ST7789V_RGBCTRL_WO BIT(7) +#define ST7789V_RGBCTRL_RCM(n) (((n) & 3) << 5) +#define ST7789V_RGBCTRL_VSYNC_HIGH BIT(3) +#define ST7789V_RGBCTRL_HSYNC_HIGH BIT(2) +#define ST7789V_RGBCTRL_PCLK_HIGH BIT(1) +#define ST7789V_RGBCTRL_VBP(n) ((n) & 0x7f) +#define ST7789V_RGBCTRL_HBP(n) ((n) & 0x1f) + +#define ST7789V_PORCTRL_CMD 0xb2 +#define ST7789V_PORCTRL_IDLE_BP(n) (((n) & 0xf) << 4) +#define ST7789V_PORCTRL_IDLE_FP(n) ((n) & 0xf) +#define ST7789V_PORCTRL_PARTIAL_BP(n) (((n) & 0xf) << 4) +#define ST7789V_PORCTRL_PARTIAL_FP(n) ((n) & 0xf) + +#define ST7789V_GCTRL_CMD 0xb7 +#define ST7789V_GCTRL_VGHS(n) (((n) & 7) << 4) +#define ST7789V_GCTRL_VGLS(n) ((n) & 7) + +#define ST7789V_VCOMS_CMD 0xbb + +#define ST7789V_LCMCTRL_CMD 0xc0 +#define ST7789V_LCMCTRL_XBGR BIT(5) +#define ST7789V_LCMCTRL_XMX BIT(3) +#define ST7789V_LCMCTRL_XMH BIT(2) + +#define ST7789V_VDVVRHEN_CMD 0xc2 +#define ST7789V_VDVVRHEN_CMDEN BIT(0) + +#define ST7789V_VRHS_CMD 0xc3 + +#define ST7789V_VDVS_CMD 0xc4 + +#define ST7789V_FRCTRL2_CMD 0xc6 + +#define ST7789V_PWCTRL1_CMD 0xd0 +#define ST7789V_PWCTRL1_MAGIC 0xa4 +#define ST7789V_PWCTRL1_AVDD(n) (((n) & 3) << 6) +#define ST7789V_PWCTRL1_AVCL(n) (((n) & 3) << 4) +#define ST7789V_PWCTRL1_VDS(n) ((n) & 3) + +#define ST7789V_PVGAMCTRL_CMD 0xe0 +#define ST7789V_PVGAMCTRL_JP0(n) (((n) & 3) << 4) +#define ST7789V_PVGAMCTRL_JP1(n) (((n) & 3) << 4) +#define ST7789V_PVGAMCTRL_VP0(n) ((n) & 0xf) +#define ST7789V_PVGAMCTRL_VP1(n) ((n) & 0x3f) +#define ST7789V_PVGAMCTRL_VP2(n) ((n) & 0x3f) +#define ST7789V_PVGAMCTRL_VP4(n) ((n) & 0x1f) +#define ST7789V_PVGAMCTRL_VP6(n) ((n) & 0x1f) +#define ST7789V_PVGAMCTRL_VP13(n) ((n) & 0xf) +#define ST7789V_PVGAMCTRL_VP20(n) ((n) & 0x7f) +#define ST7789V_PVGAMCTRL_VP27(n) ((n) & 7) +#define ST7789V_PVGAMCTRL_VP36(n) (((n) & 7) << 4) +#define ST7789V_PVGAMCTRL_VP43(n) ((n) & 0x7f) +#define ST7789V_PVGAMCTRL_VP50(n) ((n) & 0xf) +#define ST7789V_PVGAMCTRL_VP57(n) ((n) & 0x1f) +#define ST7789V_PVGAMCTRL_VP59(n) ((n) & 0x1f) +#define ST7789V_PVGAMCTRL_VP61(n) ((n) & 0x3f) +#define ST7789V_PVGAMCTRL_VP62(n) ((n) & 0x3f) +#define ST7789V_PVGAMCTRL_VP63(n) (((n) & 0xf) << 4) + +#define ST7789V_NVGAMCTRL_CMD 0xe1 +#define ST7789V_NVGAMCTRL_JN0(n) (((n) & 3) << 4) +#define ST7789V_NVGAMCTRL_JN1(n) (((n) & 3) << 4) +#define ST7789V_NVGAMCTRL_VN0(n) ((n) & 0xf) +#define ST7789V_NVGAMCTRL_VN1(n) ((n) & 0x3f) +#define ST7789V_NVGAMCTRL_VN2(n) ((n) & 0x3f) +#define ST7789V_NVGAMCTRL_VN4(n) ((n) & 0x1f) +#define ST7789V_NVGAMCTRL_VN6(n) ((n) & 0x1f) +#define ST7789V_NVGAMCTRL_VN13(n) ((n) & 0xf) +#define ST7789V_NVGAMCTRL_VN20(n) ((n) & 0x7f) +#define ST7789V_NVGAMCTRL_VN27(n) ((n) & 7) +#define ST7789V_NVGAMCTRL_VN36(n) (((n) & 7) << 4) +#define ST7789V_NVGAMCTRL_VN43(n) ((n) & 0x7f) +#define ST7789V_NVGAMCTRL_VN50(n) ((n) & 0xf) +#define ST7789V_NVGAMCTRL_VN57(n) ((n) & 0x1f) +#define ST7789V_NVGAMCTRL_VN59(n) ((n) & 0x1f) +#define ST7789V_NVGAMCTRL_VN61(n) ((n) & 0x3f) +#define ST7789V_NVGAMCTRL_VN62(n) ((n) & 0x3f) +#define ST7789V_NVGAMCTRL_VN63(n) (((n) & 0xf) << 4) + +struct st7789v { + struct drm_panel panel; + struct spi_device *spi; + struct gpio_desc *reset; + struct backlight_device *backlight; +}; + +enum st7789v_prefix { + ST7789V_COMMAND = 0, + ST7789V_DATA = 1, +}; + +static inline struct st7789v *panel_to_st7789v(struct drm_panel *panel) +{ + return container_of(panel, struct st7789v, panel); +} + +static int st7789v_spi_write(struct st7789v *ctx, u8 prefix, u8 data) +{ + struct spi_transfer xfer = { }; + struct spi_message msg; + u16 txbuf = ((prefix & 1) << 8) | data; + + spi_message_init(&msg); + + xfer.tx_buf = &txbuf; + xfer.bits_per_word = 9; + xfer.len = sizeof(txbuf); + + spi_message_add_tail(&xfer, &msg); + return spi_sync(ctx->spi, &msg); +} + +static int st7789v_write_command(struct st7789v *ctx, u8 cmd) +{ + return st7789v_spi_write(ctx, ST7789V_COMMAND, cmd); +} + +static int st7789v_write_data(struct st7789v *ctx, u8 cmd) +{ + return st7789v_spi_write(ctx, ST7789V_DATA, cmd); +} + +static int st7789v_write_command_data(struct st7789v *ctx, u8 cmd, + unsigned long n_data, ...) +{ + va_list ap; + int i; + + st7789v_write_command(ctx, cmd); + + va_start(ap, n_data); + for (i = 0; i < n_data; i++) + st7789v_write_data(ctx, va_arg(ap, int)); + va_end(ap); + + return 0; +} + +static const struct drm_display_mode default_mode = { + .clock = 7000, + .hdisplay = 240, + .hsync_start = 240 + 38, + .hsync_end = 240 + 38 + 10, + .htotal = 240 + 38 + 10 + 10, + .vdisplay = 320, + .vsync_start = 320 + 8, + .vsync_end = 320 + 8 + 4, + .vtotal = 320 + 8 + 4 + 4, + .vrefresh = 60, +}; + +static int st7789v_get_modes(struct drm_panel *panel) +{ + struct drm_connector *connector = panel->connector; + struct drm_display_mode *mode; + + mode = drm_mode_duplicate(panel->drm, &default_mode); + if (!mode) { + dev_err(panel->drm->dev, "failed to add mode %ux%ux@%u\n", + default_mode.hdisplay, default_mode.vdisplay, + default_mode.vrefresh); + return -ENOMEM; + } + + drm_mode_set_name(mode); + + mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED; + drm_mode_probed_add(connector, mode); + + panel->connector->display_info.width_mm = 61; + panel->connector->display_info.height_mm = 103; + + return 1; +} + +#define NUMARGS(...) (sizeof((int[]){__VA_ARGS__}) / sizeof(int)) +#define st7789v_send(ctx, cmd, ...) \ + st7789v_write_command_data(ctx, cmd, NUMARGS(__VA_ARGS__), \ + ##__VA_ARGS__) + +static int st7789v_prepare(struct drm_panel *panel) +{ + struct st7789v *ctx = panel_to_st7789v(panel); + + gpiod_set_value(ctx->reset, 1); + msleep(30); + gpiod_set_value(ctx->reset, 0); + msleep(120); + + st7789v_send(ctx, ST7789V_SLPOUT_CMD); + + /* We need to wait 120ms after a sleep out command */ + msleep(120); + + st7789v_send(ctx, ST7789V_MADCTL_CMD, 0); + + st7789v_send(ctx, ST7789V_COLMOD_CMD, + ST7789V_COLMOD_CTRL_FMT_18BITS | + ST7789V_COLMOD_RGB_FMT_18BITS); + + st7789v_send(ctx, ST7789V_PORCTRL_CMD, + 0xc, /* Backporch, normal mode*/ + 0xc, /* Frontporch, normal mode */ + 0, /* Disable separate porch control */ + ST7789V_PORCTRL_IDLE_BP(3) | + ST7789V_PORCTRL_IDLE_FP(3), + ST7789V_PORCTRL_PARTIAL_BP(3) | + ST7789V_PORCTRL_PARTIAL_FP(3)); + + st7789v_send(ctx, ST7789V_GCTRL_CMD, + ST7789V_GCTRL_VGLS(5) | ST7789V_GCTRL_VGHS(3)); + + st7789v_send(ctx, ST7789V_VCOMS_CMD, 0x2b); + + st7789v_send(ctx, ST7789V_LCMCTRL_CMD, ST7789V_LCMCTRL_XMH | + ST7789V_LCMCTRL_XMX | ST7789V_LCMCTRL_XBGR); + + st7789v_send(ctx, ST7789V_VDVVRHEN_CMD, ST7789V_VDVVRHEN_CMDEN); + + st7789v_send(ctx, ST7789V_VRHS_CMD, 0xf); + + st7789v_send(ctx, ST7789V_VDVS_CMD, 0x20); + + st7789v_send(ctx, ST7789V_FRCTRL2_CMD, 0xf); + + st7789v_send(ctx, ST7789V_PWCTRL1_CMD, ST7789V_PWCTRL1_MAGIC, + ST7789V_PWCTRL1_AVDD(2) | ST7789V_PWCTRL1_AVCL(2) | + ST7789V_PWCTRL1_VDS(1)); + + st7789v_send(ctx, ST7789V_PVGAMCTRL_CMD, + ST7789V_PVGAMCTRL_VP63(0xd), + ST7789V_PVGAMCTRL_VP1(0xca), + ST7789V_PVGAMCTRL_VP2(0xe), + ST7789V_PVGAMCTRL_VP4(8), + ST7789V_PVGAMCTRL_VP6(9), + ST7789V_PVGAMCTRL_VP13(7), + ST7789V_PVGAMCTRL_VP20(0x2d), + ST7789V_PVGAMCTRL_VP27(0xb) | ST7789V_PVGAMCTRL_VP36(3), + ST7789V_PVGAMCTRL_VP43(0x3d), + ST7789V_PVGAMCTRL_JP1(3) | ST7789V_PVGAMCTRL_VP50(4), + ST7789V_PVGAMCTRL_VP57(0xa), + ST7789V_PVGAMCTRL_VP59(0xa), + ST7789V_PVGAMCTRL_VP61(0x1b), + ST7789V_PVGAMCTRL_VP62(0x28)); + + st7789v_send(ctx, ST7789V_NVGAMCTRL_CMD, + ST7789V_NVGAMCTRL_VN63(0xd), + ST7789V_NVGAMCTRL_VN1(0xca), + ST7789V_NVGAMCTRL_VN2(0xf), + ST7789V_NVGAMCTRL_VN4(8), + ST7789V_NVGAMCTRL_VN6(8), + ST7789V_NVGAMCTRL_VN13(7), + ST7789V_NVGAMCTRL_VN20(0x2e), + ST7789V_NVGAMCTRL_VN27(0xc) | ST7789V_NVGAMCTRL_VN36(5), + ST7789V_NVGAMCTRL_VN43(0x40), + ST7789V_NVGAMCTRL_JN1(3) | ST7789V_NVGAMCTRL_VN50(4), + ST7789V_NVGAMCTRL_VN57(9), + ST7789V_NVGAMCTRL_VN59(0xb), + ST7789V_NVGAMCTRL_VN61(0x1b), + ST7789V_NVGAMCTRL_VN62(0x28)); + + st7789v_send(ctx, ST7789V_INVON_CMD); + + st7789v_send(ctx, ST7789V_RAMCTRL_CMD, + ST7789V_RAMCTRL_DM_RGB | ST7789V_RAMCTRL_RM_RGB, + ST7789V_RAMCTRL_EPF(3) | ST7789V_RAMCTRL_MAGIC); + + st7789v_send(ctx, ST7789V_RGBCTRL_CMD, + ST7789V_RGBCTRL_WO | ST7789V_RGBCTRL_RCM(2) | + ST7789V_RGBCTRL_VSYNC_HIGH | ST7789V_RGBCTRL_HSYNC_HIGH | + ST7789V_RGBCTRL_PCLK_HIGH, + ST7789V_RGBCTRL_VBP(8), ST7789V_RGBCTRL_HBP(20)); + + return 0; +} + +static int st7789v_enable(struct drm_panel *panel) +{ + struct st7789v *ctx = panel_to_st7789v(panel); + + if (ctx->backlight) { + ctx->backlight->props.state &= ~BL_CORE_FBBLANK; + ctx->backlight->props.power = FB_BLANK_UNBLANK; + backlight_update_status(ctx->backlight); + } + + return st7789v_send(ctx, ST7789V_DISPON_CMD); +} + +static int st7789v_disable(struct drm_panel *panel) +{ + struct st7789v *ctx = panel_to_st7789v(panel); + + st7789v_send(ctx, ST7789V_DISPOFF_CMD); + + if (ctx->backlight) { + ctx->backlight->props.power = FB_BLANK_POWERDOWN; + ctx->backlight->props.state |= BL_CORE_FBBLANK; + backlight_update_status(ctx->backlight); + } + + return 0; +} + +static int st7789v_unprepare(struct drm_panel *panel) +{ + struct st7789v *ctx = panel_to_st7789v(panel); + + st7789v_send(ctx, ST7789V_SLPIN_CMD); + + return 0; +} + +static const struct drm_panel_funcs st7789v_drm_funcs = { + .disable = st7789v_disable, + .enable = st7789v_enable, + .get_modes = st7789v_get_modes, + .prepare = st7789v_prepare, + .unprepare = st7789v_unprepare, +}; + +static int st7789v_probe(struct spi_device *spi) +{ + struct device_node *backlight; + struct st7789v *ctx; + int ret; + + ctx = devm_kzalloc(&spi->dev, sizeof(*ctx), GFP_KERNEL); + if (!ctx) + return -ENOMEM; + + spi_set_drvdata(spi, ctx); + ctx->spi = spi; + + ctx->panel.dev = &spi->dev; + ctx->panel.funcs = &st7789v_drm_funcs; + + ctx->reset = devm_gpiod_get(&spi->dev, "reset", GPIOD_OUT_LOW); + if (IS_ERR(ctx->reset)) { + dev_err(&spi->dev, "Couldn't get our reset line\n"); + return PTR_ERR(ctx->reset); + } + + backlight = of_parse_phandle(spi->dev.of_node, "backlight", 0); + if (backlight) { + ctx->backlight = of_find_backlight_by_node(backlight); + of_node_put(backlight); + + if (!ctx->backlight) + return -EPROBE_DEFER; + } + + ret = drm_panel_add(&ctx->panel); + if (ret < 0) + goto err_free_backlight; + + return 0; + +err_free_backlight: + if (ctx->backlight) + put_device(&ctx->backlight->dev); + + return ret; +} + +static int st7789v_remove(struct spi_device *spi) +{ + struct st7789v *ctx = spi_get_drvdata(spi); + + drm_panel_detach(&ctx->panel); + drm_panel_remove(&ctx->panel); + + if (ctx->backlight) + put_device(&ctx->backlight->dev); + + return 0; +} + +static const struct of_device_id st7789v_of_match[] = { + { .compatible = "sitronix,st7789v" }, + { } +}; +MODULE_DEVICE_TABLE(of, st7789v_of_match); + +static struct spi_driver st7789v_driver = { + .probe = st7789v_probe, + .remove = st7789v_remove, + .driver = { + .name = "st7789v", + .of_match_table = st7789v_of_match, + }, +}; +module_spi_driver(st7789v_driver); + +MODULE_AUTHOR("Maxime Ripard "); +MODULE_DESCRIPTION("Sitronix st7789v LCD Driver"); +MODULE_LICENSE("GPL v2");