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ARM: davinci: dm644x: add support for v4l2 video display
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Add functions to register various video devices like venc, osd,
vpbe and the v4l2 display driver for dm644x.

Change dm644x_init_video() to make room for display related
configuration. Register the vpfe or vpbe devices only if valid
display configuration is provided to make sure boards without
video support dont erroneously register video devices.

Signed-off-by: Manjunath Hadli <manjunath.hadli@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
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Manjunath Hadli authored and Sekhar Nori committed Mar 11, 2012
1 parent 12db958 commit af946f2
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Showing 3 changed files with 161 additions and 15 deletions.
2 changes: 1 addition & 1 deletion arch/arm/mach-davinci/board-dm644x-evm.c
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Original file line number Diff line number Diff line change
Expand Up @@ -696,7 +696,7 @@ static __init void davinci_evm_init(void)
evm_init_i2c();

davinci_setup_mmc(0, &dm6446evm_mmc_config);
dm644x_init_video(&dm644xevm_capture_cfg);
dm644x_init_video(&dm644xevm_capture_cfg, NULL);

davinci_serial_init(&uart_config);
dm644x_init_asp(&dm644x_evm_snd_data);
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8 changes: 7 additions & 1 deletion arch/arm/mach-davinci/davinci.h
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Expand Up @@ -29,9 +29,15 @@

#include <media/davinci/vpfe_capture.h>
#include <media/davinci/vpif_types.h>
#include <media/davinci/vpss.h>
#include <media/davinci/vpbe_types.h>
#include <media/davinci/vpbe_venc.h>
#include <media/davinci/vpbe.h>
#include <media/davinci/vpbe_osd.h>

#define DAVINCI_SYSTEM_MODULE_BASE 0x01c40000
#define SYSMOD_VIDCLKCTL 0x38
#define SYSMOD_VPSS_CLKCTL 0x44
#define SYSMOD_VDD3P3VPWDN 0x48
#define SYSMOD_VSCLKDIS 0x6c
#define SYSMOD_PUPDCTL1 0x7c
Expand Down Expand Up @@ -83,7 +89,7 @@ void dm365_set_vpfe_config(struct vpfe_config *cfg);
/* DM644x function declarations */
void __init dm644x_init(void);
void __init dm644x_init_asp(struct snd_platform_data *pdata);
int __init dm644x_init_video(struct vpfe_config *);
int __init dm644x_init_video(struct vpfe_config *, struct vpbe_config *);

/* DM646x function declarations */
void __init dm646x_init(void);
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166 changes: 153 additions & 13 deletions arch/arm/mach-davinci/dm644x.c
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Original file line number Diff line number Diff line change
Expand Up @@ -627,7 +627,7 @@ static struct resource dm644x_vpfe_resources[] = {
},
};

static u64 vpfe_capture_dma_mask = DMA_BIT_MASK(32);
static u64 dm644x_video_dma_mask = DMA_BIT_MASK(32);
static struct resource dm644x_ccdc_resource[] = {
/* CCDC Base address */
{
Expand All @@ -643,7 +643,7 @@ static struct platform_device dm644x_ccdc_dev = {
.num_resources = ARRAY_SIZE(dm644x_ccdc_resource),
.resource = dm644x_ccdc_resource,
.dev = {
.dma_mask = &vpfe_capture_dma_mask,
.dma_mask = &dm644x_video_dma_mask,
.coherent_dma_mask = DMA_BIT_MASK(32),
},
};
Expand All @@ -654,7 +654,134 @@ static struct platform_device dm644x_vpfe_dev = {
.num_resources = ARRAY_SIZE(dm644x_vpfe_resources),
.resource = dm644x_vpfe_resources,
.dev = {
.dma_mask = &vpfe_capture_dma_mask,
.dma_mask = &dm644x_video_dma_mask,
.coherent_dma_mask = DMA_BIT_MASK(32),
},
};

#define DM644X_OSD_BASE 0x01c72600

static struct resource dm644x_osd_resources[] = {
{
.start = DM644X_OSD_BASE,
.end = DM644X_OSD_BASE + 0x1ff,
.flags = IORESOURCE_MEM,
},
};

static struct osd_platform_data dm644x_osd_data = {
.vpbe_type = VPBE_VERSION_1,
};

static struct platform_device dm644x_osd_dev = {
.name = VPBE_OSD_SUBDEV_NAME,
.id = -1,
.num_resources = ARRAY_SIZE(dm644x_osd_resources),
.resource = dm644x_osd_resources,
.dev = {
.dma_mask = &dm644x_video_dma_mask,
.coherent_dma_mask = DMA_BIT_MASK(32),
.platform_data = &dm644x_osd_data,
},
};

#define DM644X_VENC_BASE 0x01c72400

static struct resource dm644x_venc_resources[] = {
{
.start = DM644X_VENC_BASE,
.end = DM644X_VENC_BASE + 0x17f,
.flags = IORESOURCE_MEM,
},
};

#define DM644X_VPSS_MUXSEL_PLL2_MODE BIT(0)
#define DM644X_VPSS_MUXSEL_VPBECLK_MODE BIT(1)
#define DM644X_VPSS_VENCLKEN BIT(3)
#define DM644X_VPSS_DACCLKEN BIT(4)

static int dm644x_venc_setup_clock(enum vpbe_enc_timings_type type,
unsigned int mode)
{
int ret = 0;
u32 v = DM644X_VPSS_VENCLKEN;

switch (type) {
case VPBE_ENC_STD:
v |= DM644X_VPSS_DACCLKEN;
writel(v, DAVINCI_SYSMOD_VIRT(SYSMOD_VPSS_CLKCTL));
break;
case VPBE_ENC_DV_PRESET:
switch (mode) {
case V4L2_DV_480P59_94:
case V4L2_DV_576P50:
v |= DM644X_VPSS_MUXSEL_PLL2_MODE |
DM644X_VPSS_DACCLKEN;
writel(v, DAVINCI_SYSMOD_VIRT(SYSMOD_VPSS_CLKCTL));
break;
case V4L2_DV_720P60:
case V4L2_DV_1080I60:
case V4L2_DV_1080P30:
/*
* For HD, use external clock source since
* HD requires higher clock rate
*/
v |= DM644X_VPSS_MUXSEL_VPBECLK_MODE;
writel(v, DAVINCI_SYSMOD_VIRT(SYSMOD_VPSS_CLKCTL));
break;
default:
ret = -EINVAL;
break;
}
break;
default:
ret = -EINVAL;
}

return ret;
}

static struct resource dm644x_v4l2_disp_resources[] = {
{
.start = IRQ_VENCINT,
.end = IRQ_VENCINT,
.flags = IORESOURCE_IRQ,
},
};

static struct platform_device dm644x_vpbe_display = {
.name = "vpbe-v4l2",
.id = -1,
.num_resources = ARRAY_SIZE(dm644x_v4l2_disp_resources),
.resource = dm644x_v4l2_disp_resources,
.dev = {
.dma_mask = &dm644x_video_dma_mask,
.coherent_dma_mask = DMA_BIT_MASK(32),
},
};

static struct venc_platform_data dm644x_venc_pdata = {
.venc_type = VPBE_VERSION_1,
.setup_clock = dm644x_venc_setup_clock,
};

static struct platform_device dm644x_venc_dev = {
.name = VPBE_VENC_SUBDEV_NAME,
.id = -1,
.num_resources = ARRAY_SIZE(dm644x_venc_resources),
.resource = dm644x_venc_resources,
.dev = {
.dma_mask = &dm644x_video_dma_mask,
.coherent_dma_mask = DMA_BIT_MASK(32),
.platform_data = &dm644x_venc_pdata,
},
};

static struct platform_device dm644x_vpbe_dev = {
.name = "vpbe_controller",
.id = -1,
.dev = {
.dma_mask = &dm644x_video_dma_mask,
.coherent_dma_mask = DMA_BIT_MASK(32),
},
};
Expand Down Expand Up @@ -786,17 +913,30 @@ void __init dm644x_init(void)
davinci_map_sysmod();
}

int __init dm644x_init_video(struct vpfe_config *vpfe_cfg)
int __init dm644x_init_video(struct vpfe_config *vpfe_cfg,
struct vpbe_config *vpbe_cfg)
{
dm644x_vpfe_dev.dev.platform_data = vpfe_cfg;

/* Add ccdc clock aliases */
clk_add_alias("master", dm644x_ccdc_dev.name, "vpss_master", NULL);
clk_add_alias("slave", dm644x_ccdc_dev.name, "vpss_slave", NULL);

platform_device_register(&dm644x_vpss_device);
platform_device_register(&dm644x_ccdc_dev);
platform_device_register(&dm644x_vpfe_dev);
if (vpfe_cfg || vpbe_cfg)
platform_device_register(&dm644x_vpss_device);

if (vpfe_cfg) {
dm644x_vpfe_dev.dev.platform_data = vpfe_cfg;
platform_device_register(&dm644x_ccdc_dev);
platform_device_register(&dm644x_vpfe_dev);
/* Add ccdc clock aliases */
clk_add_alias("master", dm644x_ccdc_dev.name,
"vpss_master", NULL);
clk_add_alias("slave", dm644x_ccdc_dev.name,
"vpss_slave", NULL);
}

if (vpbe_cfg) {
dm644x_vpbe_dev.dev.platform_data = vpbe_cfg;
platform_device_register(&dm644x_osd_dev);
platform_device_register(&dm644x_venc_dev);
platform_device_register(&dm644x_vpbe_dev);
platform_device_register(&dm644x_vpbe_display);
}

return 0;
}
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