ap4evb uses an LCD, connected to the SoC over the MIPI bus. This patch adds
platform data to configure this display and a static clock activation.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@xxxxxx>
---
v1 -> v2:
1. right margin reduced from 1080 points down to 600 points. This
configures the blanking time, required for the LCD.
arch/arm/mach-shmobile/Kconfig | 1 +
arch/arm/mach-shmobile/board-ap4evb.c | 121 +++++++++++++++++++++++++++++++++
2 files changed, 122 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-shmobile/Kconfig b/arch/arm/mach-shmobile/Kconfig
index 9003ea9..e216132 100644
--- a/arch/arm/mach-shmobile/Kconfig
+++ b/arch/arm/mach-shmobile/Kconfig
@@ -42,6 +42,7 @@ config MACH_AP4EVB
bool "AP4EVB board"
depends on ARCH_SH7372
select ARCH_REQUIRE_GPIOLIB
+ select SH_LCD_MIPI_DSI
comment "SH-Mobile System Configuration"
diff --git a/arch/arm/mach-shmobile/board-ap4evb.c b/arch/arm/mach-shmobile/board-ap4evb.c
index d2bb7b0..e4ca9a9 100644
--- a/arch/arm/mach-shmobile/board-ap4evb.c
+++ b/arch/arm/mach-shmobile/board-ap4evb.c
@@ -17,6 +17,7 @@
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
+#include <linux/clk.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/interrupt.h>
@@ -32,8 +33,14 @@
#include <linux/gpio.h>
#include <linux/input.h>
#include <linux/input/sh_keysc.h>
+
+#include <video/sh_mobile_lcdc.h>
+#include <video/sh_mipi_dsi.h>
+
#include <mach/common.h>
+#include <mach/irqs.h>
#include <mach/sh7372.h>
+
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
@@ -237,11 +244,86 @@ static struct platform_device sdhi0_device = {
},
};
+static struct sh_mobile_lcdc_info sh_mobile_lcdc_info = {
+ .clock_source = LCDC_CLK_PERIPHERAL, /* One of interface clocks */
+ .ch[0] = {
+ .chan = LCDC_CHAN_MAINLCD,
+ .bpp = 16,
+ .interface_type = RGB24,
+ .clock_divider = 1,
+ .flags = LCDC_FLAGS_DWPOL,
+ .lcd_cfg = {
+ .name = "R63302(QHD)",
+ .xres = 544,
+ .yres = 961,
+ .left_margin = 72,
+ .right_margin = 600,
+ .hsync_len = 16,
+ .upper_margin = 8,
+ .lower_margin = 8,
+ .vsync_len = 2,
+ .sync = FB_SYNC_VERT_HIGH_ACT | FB_SYNC_HOR_HIGH_ACT,
+ },
+ .lcd_size_cfg = {
+ .width = 44,
+ .height = 79,
+ },
+ }
+};
+
+static struct resource lcdc_resources[] = {
+ [0] = {
+ .name = "LCDC",
+ .start = 0xfe940000, /* P4-only space */
+ .end = 0xfe943fff,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = intcs_evt2irq(0x580),
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct platform_device lcdc_device = {
+ .name = "sh_mobile_lcdc_fb",
+ .num_resources = ARRAY_SIZE(lcdc_resources),
+ .resource = lcdc_resources,
+ .dev = {
+ .platform_data = &sh_mobile_lcdc_info,
+ .coherent_dma_mask = ~0,
+ },
+};
+
+static struct resource mipidsi0_resources[] = {
+ [0] = {
+ .start = 0xffc60000,
+ .end = 0xffc68fff,
+ .flags = IORESOURCE_MEM,
+ },
+};
+
+static struct sh_mipi_dsi_info mipidsi0_info = {
+ .data_format = MIPI_RGB888,
+ .lcd_chan = &sh_mobile_lcdc_info.ch[0],
+};
+
+static struct platform_device mipidsi0_device = {
+ .name = "sh-mipi-dsi",
+ .num_resources = ARRAY_SIZE(mipidsi0_resources),
+ .resource = mipidsi0_resources,
+ .id = 0,
+ .dev = {
+ .platform_data = &mipidsi0_info,
+ },
+};
+
static struct platform_device *ap4evb_devices[] __initdata = {
&nor_flash_device,
&smc911x_device,
&keysc_device,
&sdhi0_device,
+ &lcdc_device,
+ &mipidsi0_device,
};
static struct map_desc ap4evb_io_desc[] __initdata = {
@@ -265,6 +347,45 @@ static void __init ap4evb_map_io(void)
shmobile_setup_console();
}
+/* This function will disappear when we switch to (runtime) PM */
+static int __init ap4evb_init_display_clk(void)
+{
+ struct clk *lcdc_clk;
+ struct clk *dsitx_clk;
+ int ret;
+
+ lcdc_clk = clk_get(&lcdc_device.dev, "lcdc0");
+ if (IS_ERR(lcdc_clk))
+ return PTR_ERR(lcdc_clk);
+
+ dsitx_clk = clk_get(&mipidsi0_device.dev, "dsitx");
+ if (IS_ERR(dsitx_clk)) {
+ ret = PTR_ERR(dsitx_clk);
+ goto eclkdsitxget;
+ }
+
+ ret = clk_enable(lcdc_clk);
+ if (ret < 0)
+ goto eclklcdcon;
+
+ ret = clk_enable(dsitx_clk);
+ if (ret < 0)
+ goto eclkdsitxon;
+
+ return 0;
+
+eclkdsitxon:
+ clk_disable(lcdc_clk);
+eclklcdcon:
+ clk_put(dsitx_clk);
+eclkdsitxget:
+ clk_put(lcdc_clk);
+
+ return ret;
+}
+
+device_initcall(ap4evb_init_display_clk);
+
static void __init ap4evb_init(void)
{
sh7372_pinmux_init();
--
1.6.2.4
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