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ARM: mach-shmobile: add framebuffer support for ap4evb

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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@gmx.de>
Tested-by: Damian Hobson-Garcia <dhobsong@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Guennadi Liakhovetski 2010-05-23 14:04:03 +00:00 committed by Paul Mundt
parent 9fd04fe34a
commit 8eda2f21ed
2 changed files with 122 additions and 0 deletions
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1
arch/arm/mach-shmobile/Kconfig
View File

@ -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"

121
arch/arm/mach-shmobile/board-ap4evb.c
View File

@ -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>
@ -34,8 +35,14 @@
#include <linux/input.h>
#include <linux/input/sh_keysc.h>
#include <linux/usb/r8a66597.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>
@ -284,12 +291,87 @@ static struct platform_device usb1_host_device = {
.resource = usb1_host_resources,
};
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,
&usb1_host_device,
&lcdc_device,
&mipidsi0_device,
};
/* TouchScreen (Needs SW3 set to OFF) */
@ -333,6 +415,45 @@ 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, "sh_mobile_lcdc_fb.0");
if (IS_ERR(lcdc_clk))
return PTR_ERR(lcdc_clk);
dsitx_clk = clk_get(&mipidsi0_device.dev, "sh-mipi-dsi.0");
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();