[PATCH/RFC 6/6] staging: board: armadillo800eva: Board staging for sh_mobile_lcdc_fb

[Geert Uytterhoeven]

Add staging board support for the r8a7740-based armadillo800eva board
and add platform devices to allow in-tree continuous development of the
drivers on the armadillo800eva board.

When DT bindings are ready for theses drivers then the platform devices
in the armadillo800eva staging board code can easily be removed. Until
then we use platform devices to continuously improve the driver and
integrate code.

Added platform devices:
  - sh_mobile_lcdc_fb for the on-board LCD.

Signed-off-by: Geert Uytterhoeven <geert+renesas at glider.be>
---
What other devices do we want to add?
---
 drivers/staging/board/Makefile          |   3 +-
 drivers/staging/board/armadillo800eva.c | 124 ++++++++++++++++++++++++++++++++
 2 files changed, 126 insertions(+), 1 deletion(-)
 create mode 100644 drivers/staging/board/armadillo800eva.c

diff --git a/drivers/staging/board/Makefile b/drivers/staging/board/Makefile
index 65d39ecfad63bbf4..6842745feb9404f8 100644
--- a/drivers/staging/board/Makefile
+++ b/drivers/staging/board/Makefile
@@ -1,2 +1,3 @@
 obj-y	:= board.o
-obj-$(CONFIG_ARCH_EMEV2)      += kzm9d.o
+obj-$(CONFIG_ARCH_EMEV2)	+= kzm9d.o
+obj-$(CONFIG_ARCH_R8A7740)	+= armadillo800eva.o
diff --git a/drivers/staging/board/armadillo800eva.c b/drivers/staging/board/armadillo800eva.c
new file mode 100644
index 0000000000000000..f9cb645877f52c52
--- /dev/null
+++ b/drivers/staging/board/armadillo800eva.c
@@ -0,0 +1,124 @@
+/*
+ * Staging board support for Armadillo 800 eva.
+ * Enable not-yet-DT-capable devices here.
+ *
+ * Based on board-armadillo800eva.c
+ *
+ * Copyright (C) 2012 Renesas Solutions Corp.
+ * Copyright (C) 2012 Kuninori Morimoto <kuninori.morimoto.gx at renesas.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * 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 <linux/dma-mapping.h>
+#include <linux/fb.h>
+#include <linux/gpio.h>
+#include <linux/kernel.h>
+#include <linux/pinctrl/machine.h>
+#include <linux/platform_device.h>
+#include <linux/videodev2.h>
+
+#include <video/sh_mobile_lcdc.h>
+
+#include "board.h"
+
+
+static struct fb_videomode lcdc0_mode = {
+	.name		= "AMPIER/AM-800480",
+	.xres		= 800,
+	.yres		= 480,
+	.left_margin	= 88,
+	.right_margin	= 40,
+	.hsync_len	= 128,
+	.upper_margin	= 20,
+	.lower_margin	= 5,
+	.vsync_len	= 5,
+	.sync		= 0,
+};
+
+static struct sh_mobile_lcdc_info lcdc0_info = {
+	.clock_source	= LCDC_CLK_BUS,
+	.ch[0] = {
+		.chan		= LCDC_CHAN_MAINLCD,
+		.fourcc		= V4L2_PIX_FMT_RGB565,
+		.interface_type	= RGB24,
+		.clock_divider	= 5,
+		.flags		= 0,
+		.lcd_modes	= &lcdc0_mode,
+		.num_modes	= 1,
+		.panel_cfg = {
+			.width	= 111,
+			.height = 68,
+		},
+	},
+};
+
+static struct resource lcdc0_resources[] = {
+	[0] = {
+		.name	= "LCD0",
+		.start	= 0xfe940000,
+		.end	= 0xfe943fff,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start	= 177 + 32,
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+static struct platform_device lcdc0_device = {
+	.name		= "sh_mobile_lcdc_fb",
+	.num_resources	= ARRAY_SIZE(lcdc0_resources),
+	.resource	= lcdc0_resources,
+	.id		= 0,
+	.dev	= {
+		.platform_data	= &lcdc0_info,
+		.coherent_dma_mask = DMA_BIT_MASK(32),
+	},
+};
+
+static const struct board_staging_clk lcdc0_clocks[] __initconst = {
+	{ "lcdc0", NULL, "sh_mobile_lcdc_fb.0" },
+};
+
+static const struct pinctrl_map lcdc0_pinmaps[] __initconst = {
+	PIN_MAP_MUX_GROUP_DEFAULT("sh_mobile_lcdc_fb.0", "e6050000.pfc",
+				  "lcd0_data24_0", "lcd0"),
+	PIN_MAP_MUX_GROUP_DEFAULT("sh_mobile_lcdc_fb.0", "e6050000.pfc",
+				  "lcd0_lclk_1", "lcd0"),
+	PIN_MAP_MUX_GROUP_DEFAULT("sh_mobile_lcdc_fb.0", "e6050000.pfc",
+				  "lcd0_sync", "lcd0"),
+};
+
+static const struct board_staging_gpio lcdc0_gpios[] __initconst = {
+	{ 176, GPIOF_OUT_INIT_HIGH },	/* DBGMD/LCDC0/FSIA MUX */
+};
+
+static const struct board_staging_dev armadillo800eva_devices[] __initconst = {
+	{
+		.pdev		= &lcdc0_device,
+		.clocks		= lcdc0_clocks,
+		.nclocks	= ARRAY_SIZE(lcdc0_clocks),
+		.pinmaps	= lcdc0_pinmaps,
+		.npinmaps	= ARRAY_SIZE(lcdc0_pinmaps),
+		.gpios		= lcdc0_gpios,
+		.ngpios		= ARRAY_SIZE(lcdc0_gpios),
+		.domain		= "a4lc",
+	},
+};
+
+static void __init armadillo800eva_init(void)
+{
+	board_staging_setup_hwirq_xlate("arm,cortex-a9-gic", 32);
+	board_staging_register_devices(armadillo800eva_devices,
+				       ARRAY_SIZE(armadillo800eva_devices));
+}
+
+board_staging("renesas,armadillo800eva", armadillo800eva_init);
-- 
1.9.1