[PATCH v8 1/2] ARM: davinci: dm365: add support for v4l2 video display
Prabhakar lad
prabhakar.csengg at gmail.com
Tue Apr 2 07:54:40 EDT 2013
From: Lad, Prabhakar <prabhakar.csengg at gmail.com>
Create platform devices for various video modules like venc,osd,
vpbe and v4l2 driver for dm365.
Signed-off-by: Lad, Prabhakar <prabhakar.csengg at gmail.com>
---
arch/arm/mach-davinci/board-dm365-evm.c | 4 +-
arch/arm/mach-davinci/davinci.h | 7 +-
arch/arm/mach-davinci/dm365.c | 185 +++++++++++++++++++++++++++++--
3 files changed, 184 insertions(+), 12 deletions(-)
diff --git a/arch/arm/mach-davinci/board-dm365-evm.c b/arch/arm/mach-davinci/board-dm365-evm.c
index c2d4958..cf77c46 100644
--- a/arch/arm/mach-davinci/board-dm365-evm.c
+++ b/arch/arm/mach-davinci/board-dm365-evm.c
@@ -564,8 +564,6 @@ static struct davinci_uart_config uart_config __initdata = {
static void __init dm365_evm_map_io(void)
{
- /* setup input configuration for VPFE input devices */
- dm365_set_vpfe_config(&vpfe_cfg);
dm365_init();
}
@@ -597,6 +595,8 @@ static __init void dm365_evm_init(void)
davinci_setup_mmc(0, &dm365evm_mmc_config);
+ dm365_init_video(&vpfe_cfg, NULL);
+
/* maybe setup mmc1/etc ... _after_ mmc0 */
evm_init_cpld();
diff --git a/arch/arm/mach-davinci/davinci.h b/arch/arm/mach-davinci/davinci.h
index 12d544b..a9de512 100644
--- a/arch/arm/mach-davinci/davinci.h
+++ b/arch/arm/mach-davinci/davinci.h
@@ -36,8 +36,13 @@
#include <media/davinci/vpbe_osd.h>
#define DAVINCI_SYSTEM_MODULE_BASE 0x01c40000
+#define SYSMOD_VDAC_CONFIG 0x2c
#define SYSMOD_VIDCLKCTL 0x38
#define SYSMOD_VPSS_CLKCTL 0x44
+#define VPSS_VENCCLKEN_ENABLE BIT(3)
+#define VPSS_DACCLKEN_ENABLE BIT(4)
+#define VPSS_PLLC2SYSCLK5_ENABLE BIT(5)
+
#define SYSMOD_VDD3P3VPWDN 0x48
#define SYSMOD_VSCLKDIS 0x6c
#define SYSMOD_PUPDCTL1 0x7c
@@ -84,7 +89,7 @@ void __init dm365_init_ks(struct davinci_ks_platform_data *pdata);
void __init dm365_init_rtc(void);
void dm365_init_spi0(unsigned chipselect_mask,
const struct spi_board_info *info, unsigned len);
-void dm365_set_vpfe_config(struct vpfe_config *cfg);
+int dm365_init_video(struct vpfe_config *, struct vpbe_config *);
/* DM644x function declarations */
void __init dm644x_init(void);
diff --git a/arch/arm/mach-davinci/dm365.c b/arch/arm/mach-davinci/dm365.c
index c61dd94..786c860 100644
--- a/arch/arm/mach-davinci/dm365.c
+++ b/arch/arm/mach-davinci/dm365.c
@@ -40,10 +40,14 @@
#define DM365_REF_FREQ 24000000 /* 24 MHz on the DM365 EVM */
+#define DM365_RTC_BASE 0x01c69000
+
/* Base of key scan register bank */
#define DM365_KEYSCAN_BASE 0x01c69400
-#define DM365_RTC_BASE 0x01c69000
+#define DM365_OSD_BASE 0x01c71c00
+
+#define DM365_VENC_BASE 0x01c71e00
#define DAVINCI_DM365_VC_BASE 0x01d0c000
#define DAVINCI_DMA_VC_TX 2
@@ -1233,6 +1237,177 @@ static struct platform_device dm365_isif_dev = {
},
};
+static struct resource dm365_osd_resources[] = {
+ {
+ .start = DM365_OSD_BASE,
+ .end = DM365_OSD_BASE + 0xff,
+ .flags = IORESOURCE_MEM,
+ },
+};
+
+static u64 dm365_video_dma_mask = DMA_BIT_MASK(32);
+
+static struct platform_device dm365_osd_dev = {
+ .name = DM365_VPBE_OSD_SUBDEV_NAME,
+ .id = -1,
+ .num_resources = ARRAY_SIZE(dm365_osd_resources),
+ .resource = dm365_osd_resources,
+ .dev = {
+ .dma_mask = &dm365_video_dma_mask,
+ .coherent_dma_mask = DMA_BIT_MASK(32),
+ },
+};
+
+static struct resource dm365_venc_resources[] = {
+ {
+ .start = IRQ_VENCINT,
+ .end = IRQ_VENCINT,
+ .flags = IORESOURCE_IRQ,
+ },
+ /* venc registers io space */
+ {
+ .start = DM365_VENC_BASE,
+ .end = DM365_VENC_BASE + 0x177,
+ .flags = IORESOURCE_MEM,
+ },
+ /* vdaccfg registers io space */
+ {
+ .start = DAVINCI_SYSTEM_MODULE_BASE + SYSMOD_VDAC_CONFIG,
+ .end = DAVINCI_SYSTEM_MODULE_BASE + SYSMOD_VDAC_CONFIG + 3,
+ .flags = IORESOURCE_MEM,
+ },
+};
+
+static struct resource dm365_v4l2_disp_resources[] = {
+ {
+ .start = IRQ_VENCINT,
+ .end = IRQ_VENCINT,
+ .flags = IORESOURCE_IRQ,
+ },
+ /* venc registers io space */
+ {
+ .start = DM365_VENC_BASE,
+ .end = DM365_VENC_BASE + 0x177,
+ .flags = IORESOURCE_MEM,
+ },
+};
+
+static int dm365_vpbe_setup_pinmux(enum v4l2_mbus_pixelcode if_type,
+ int field)
+{
+ switch (if_type) {
+ case V4L2_MBUS_FMT_SGRBG8_1X8:
+ davinci_cfg_reg(DM365_VOUT_FIELD_G81);
+ davinci_cfg_reg(DM365_VOUT_COUTL_EN);
+ davinci_cfg_reg(DM365_VOUT_COUTH_EN);
+ break;
+
+ case V4L2_MBUS_FMT_YUYV10_1X20:
+ if (field)
+ davinci_cfg_reg(DM365_VOUT_FIELD);
+ else
+ davinci_cfg_reg(DM365_VOUT_FIELD_G81);
+ davinci_cfg_reg(DM365_VOUT_COUTL_EN);
+ davinci_cfg_reg(DM365_VOUT_COUTH_EN);
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int dm365_venc_setup_clock(enum vpbe_enc_timings_type type,
+ unsigned int pclock)
+{
+ void __iomem *vpss_clkctl_reg;
+ u32 val;
+
+ vpss_clkctl_reg = DAVINCI_SYSMOD_VIRT(SYSMOD_VPSS_CLKCTL);
+
+ switch (type) {
+ case VPBE_ENC_STD:
+ val = VPSS_VENCCLKEN_ENABLE | VPSS_DACCLKEN_ENABLE;
+ break;
+
+ case VPBE_ENC_DV_TIMINGS:
+ if (pclock <= 27000000) {
+ val = VPSS_VENCCLKEN_ENABLE | VPSS_DACCLKEN_ENABLE;
+ } else {
+ /* set sysclk4 to output 74.25 MHz from pll1 */
+ val = VPSS_PLLC2SYSCLK5_ENABLE | VPSS_DACCLKEN_ENABLE |
+ VPSS_VENCCLKEN_ENABLE;
+ }
+ break;
+
+ default:
+ return -EINVAL;
+ }
+ writel(val, vpss_clkctl_reg);
+
+ return 0;
+}
+
+static struct platform_device dm365_vpbe_display = {
+ .name = "vpbe-v4l2",
+ .id = -1,
+ .num_resources = ARRAY_SIZE(dm365_v4l2_disp_resources),
+ .resource = dm365_v4l2_disp_resources,
+ .dev = {
+ .dma_mask = &dm365_video_dma_mask,
+ .coherent_dma_mask = DMA_BIT_MASK(32),
+ },
+};
+
+struct venc_platform_data dm365_venc_pdata = {
+ .setup_pinmux = dm365_vpbe_setup_pinmux,
+ .setup_clock = dm365_venc_setup_clock,
+};
+
+static struct platform_device dm365_venc_dev = {
+ .name = DM365_VPBE_VENC_SUBDEV_NAME,
+ .id = -1,
+ .num_resources = ARRAY_SIZE(dm365_venc_resources),
+ .resource = dm365_venc_resources,
+ .dev = {
+ .dma_mask = &dm365_video_dma_mask,
+ .coherent_dma_mask = DMA_BIT_MASK(32),
+ .platform_data = (void *)&dm365_venc_pdata,
+ },
+};
+
+static struct platform_device dm365_vpbe_dev = {
+ .name = "vpbe_controller",
+ .id = -1,
+ .dev = {
+ .dma_mask = &dm365_video_dma_mask,
+ .coherent_dma_mask = DMA_BIT_MASK(32),
+ },
+};
+
+int __init dm365_init_video(struct vpfe_config *vpfe_cfg,
+ struct vpbe_config *vpbe_cfg)
+{
+ if (vpfe_cfg || vpbe_cfg)
+ platform_device_register(&dm365_vpss_device);
+
+ if (vpfe_cfg) {
+ vpfe_capture_dev.dev.platform_data = vpfe_cfg;
+ platform_device_register(&dm365_isif_dev);
+ platform_device_register(&vpfe_capture_dev);
+ }
+ if (vpbe_cfg) {
+ dm365_vpbe_dev.dev.platform_data = vpbe_cfg;
+ platform_device_register(&dm365_osd_dev);
+ platform_device_register(&dm365_venc_dev);
+ platform_device_register(&dm365_vpbe_dev);
+ platform_device_register(&dm365_vpbe_display);
+ }
+
+ return 0;
+}
+
static int __init dm365_init_devices(void)
{
if (!cpu_is_davinci_dm365())
@@ -1246,14 +1421,6 @@ static int __init dm365_init_devices(void)
clk_add_alias(NULL, dev_name(&dm365_mdio_device.dev),
NULL, &dm365_emac_device.dev);
- platform_device_register(&dm365_vpss_device);
- platform_device_register(&dm365_isif_dev);
- platform_device_register(&vpfe_capture_dev);
return 0;
}
postcore_initcall(dm365_init_devices);
-
-void dm365_set_vpfe_config(struct vpfe_config *cfg)
-{
- vpfe_capture_dev.dev.platform_data = cfg;
-}
--
1.7.4.1
More information about the linux-arm-kernel
mailing list