Platform specific display device setup for DM646x EVM
Add platform device and resource structures. Also define a platform specific
clock setup function that can be accessed by the driver to configure the clock
and CPLD.
This patch is dependent on a patch submitted earlier, that patch adds
Pin Mux and clock definitions for Video on DM646x.
Signed-off-by: Chaithrika U S <chaithrika@xxxxxx>
---
Applies to DaVinci GIT tree
arch/arm/mach-davinci/board-dm646x-evm.c | 138 +++++++++++++++++++++++++++
arch/arm/mach-davinci/dm646x.c | 63 ++++++++++++
arch/arm/mach-davinci/include/mach/dm646x.h | 25 +++++
3 files changed, 226 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-davinci/board-dm646x-evm.c b/arch/arm/mach-davinci/board-dm646x-evm.c
index a300d5d..92d20f5 100644
--- a/arch/arm/mach-davinci/board-dm646x-evm.c
+++ b/arch/arm/mach-davinci/board-dm646x-evm.c
@@ -39,6 +39,7 @@
#include <mach/serial.h>
#include <mach/i2c.h>
#include <mach/mmc.h>
+#include <mach/mux.h>
#include <linux/platform_device.h>
#include <linux/i2c.h>
@@ -49,6 +50,19 @@
#define DM646X_EVM_PHY_MASK (0x2)
#define DM646X_EVM_MDIO_FREQUENCY (2200000) /* PHY bus frequency */
+#define VIDCLKCTL_OFFSET (0x38)
+#define VSCLKDIS_OFFSET (0x6c)
+
+#define VCH2CLK_MASK (BIT_MASK(10) | BIT_MASK(9) | BIT_MASK(8))
+#define VCH2CLK_SYSCLK8 (BIT(9))
+#define VCH2CLK_AUXCLK (BIT(9) | BIT(8))
+#define VCH3CLK_MASK (BIT_MASK(14) | BIT_MASK(13) | BIT_MASK(12))
+#define VCH3CLK_SYSCLK8 (BIT(13))
+#define VCH3CLK_AUXCLK (BIT(14) | BIT(13))
+
+#define VIDCH2CLK (BIT(10))
+#define VIDCH3CLK (BIT(11))
+
static struct emac_platform_data dm646x_evm_emac_pdata = {
.phy_mask = DM646X_EVM_PHY_MASK,
.mdio_max_freq = DM646X_EVM_MDIO_FREQUENCY,
@@ -103,11 +117,54 @@ int dm646xevm_eeprom_write(void *buf, off_t off, size_t count)
}
EXPORT_SYMBOL(dm646xevm_eeprom_write);
+static struct i2c_client *cpld_client;
+
+static int cpld_video_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ cpld_client = client;
+ return 0;
+}
+
+static int __devexit cpld_video_remove(struct i2c_client *client)
+{
+ cpld_client = NULL;
+ return 0;
+}
+
+static const struct i2c_device_id cpld_video_id[] = {
+ { "cpld_video", 0 },
+ { }
+};
+
+static struct i2c_driver cpld_video_driver = {
+ .driver = {
+ .name = "cpld_video",
+ },
+ .probe = cpld_video_probe,
+ .remove = cpld_video_remove,
+ .id_table = cpld_video_id,
+};
+
+static void evm_init_cpld(void)
+{
+ i2c_add_driver(&cpld_video_driver);
+}
+
static struct i2c_board_info __initdata i2c_info[] = {
{
I2C_BOARD_INFO("24c256", 0x50),
.platform_data = &eeprom_info,
},
+ {
+ I2C_BOARD_INFO("adv7343", 0x2A),
+ },
+ {
+ I2C_BOARD_INFO("ths7303", 0x2C),
+ },
+ {
+ I2C_BOARD_INFO("cpld_video", 0x3B),
+ },
};
static struct davinci_i2c_platform_data i2c_pdata = {
@@ -115,10 +172,90 @@ static struct davinci_i2c_platform_data i2c_pdata = {
.bus_delay = 0 /* usec */,
};
+static int set_vpif_clock(int mux_mode, int hd)
+{
+ int val = 0;
+ int err = 0;
+ unsigned int value;
+ void __iomem *base = IO_ADDRESS(DAVINCI_SYSTEM_MODULE_BASE);
+
+ /* disable the clock */
+ value = __raw_readl(base + VSCLKDIS_OFFSET);
+ value |= (VIDCH3CLK | VIDCH2CLK);
+ __raw_writel(value, base + VSCLKDIS_OFFSET);
+
+ val = i2c_smbus_read_byte(cpld_client);
+ if (val < 0)
+ return val;
+
+ if (mux_mode == 1)
+ val &= ~0x40;
+ else
+ val |= 0x40;
+
+ err = i2c_smbus_write_byte(cpld_client, val);
+ if (err)
+ return err;
+
+ value = __raw_readl(base + VIDCLKCTL_OFFSET);
+ value &= ~(VCH2CLK_MASK);
+ value &= ~(VCH3CLK_MASK);
+
+ if (hd >= 1)
+ value |= (VCH2CLK_SYSCLK8 | VCH3CLK_SYSCLK8);
+ else
+ value |= (VCH2CLK_AUXCLK | VCH3CLK_AUXCLK);
+
+ __raw_writel(value, base + VIDCLKCTL_OFFSET);
+
+ /* enable the clock */
+ value = __raw_readl(base + VSCLKDIS_OFFSET);
+ value &= ~(VIDCH3CLK | VIDCH2CLK);
+ __raw_writel(value, base + VSCLKDIS_OFFSET);
+
+ return 0;
+}
+
+static const struct subdev_info dm646x_vpif_subdev[] = {
+ {
+ .addr = 0x2A,
+ .name = "adv7343",
+ },
+ {
+ .addr = 0x2C,
+ .name = "ths7303",
+ },
+};
+
+static struct vpif_output output[] = {
+ {
+ .id = 0,
+ .name = "Composite"
+ },
+ {
+ .id = 1,
+ .name = "Component"
+ },
+ {
+ .id = 2,
+ .name = "S-Video"
+ },
+};
+
+static struct vpif_config dm646x_vpif_config = {
+ .set_clock = set_vpif_clock,
+ .subdevinfo = (struct subdev_info *)dm646x_vpif_subdev,
+ .subdev_count = ARRAY_SIZE(dm646x_vpif_subdev),
+ .output = output,
+ .output_count = ARRAY_SIZE(output),
+ .card_name = "DM646x EVM",
+};
+
static void __init evm_init_i2c(void)
{
davinci_init_i2c(&i2c_pdata);
i2c_register_board_info(1, i2c_info, ARRAY_SIZE(i2c_info));
+ evm_init_cpld();
}
static void __init davinci_map_io(void)
@@ -132,6 +269,7 @@ static __init void evm_init(void)
evm_init_i2c();
davinci_serial_init(&uart_config);
davinci_init_emac(&dm646x_evm_emac_pdata);
+ dm646x_setup_vpif(&dm646x_vpif_config);
}
static __init void davinci_dm646x_evm_irq_init(void)
diff --git a/arch/arm/mach-davinci/dm646x.c b/arch/arm/mach-davinci/dm646x.c
index b302f12..a94cb86 100644
--- a/arch/arm/mach-davinci/dm646x.c
+++ b/arch/arm/mach-davinci/dm646x.c
@@ -12,6 +12,7 @@
#include <linux/init.h>
#include <linux/clk.h>
#include <linux/platform_device.h>
+#include <linux/dma-mapping.h>
#include <mach/dm646x.h>
#include <mach/clock.h>
@@ -24,6 +25,15 @@
#include "clock.h"
#include "mux.h"
+#define DAVINCI_VPIF_BASE (0x01C12000)
+#define VDD3P3V_PWDN_OFFSET (0x48)
+#define VSCLKDIS_OFFSET (0x6C)
+
+#define VDD3P3V_VID_MASK (BIT_MASK(7) | BIT_MASK(6) | BIT_MASK(5) |\
+ BIT_MASK(4))
+#define VSCLKDIS_MASK (BIT_MASK(11) | BIT_MASK(10) | BIT_MASK(9) |\
+ BIT_MASK(8))
+
/*
* Device specific clocks
*/
@@ -421,8 +431,61 @@ static struct platform_device dm646x_edma_device = {
.resource = edma_resources,
};
+static u64 vpif_dma_mask = DMA_32BIT_MASK;
+
+static struct resource vpif_resource[] = {
+ {
+ .start = DAVINCI_VPIF_BASE,
+ .end = DAVINCI_VPIF_BASE + 0x03fff,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .start = IRQ_DM646X_VP_VERTINT2,
+ .end = IRQ_DM646X_VP_VERTINT2,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .start = IRQ_DM646X_VP_VERTINT3,
+ .end = IRQ_DM646X_VP_VERTINT3,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct platform_device vpif_display_dev = {
+ .name = "vpif_display",
+ .id = -1,
+ .dev = {
+ .dma_mask = &vpif_dma_mask,
+ .coherent_dma_mask = DMA_32BIT_MASK,
+ },
+ .resource = vpif_resource,
+ .num_resources = ARRAY_SIZE(vpif_resource),
+};
+
/*----------------------------------------------------------------------*/
+void dm646x_setup_vpif(struct vpif_config *config)
+{
+ unsigned int value;
+ void __iomem *base = IO_ADDRESS(DAVINCI_SYSTEM_MODULE_BASE);
+
+ value = __raw_readl(base + VSCLKDIS_OFFSET);
+ value &= ~VSCLKDIS_MASK;
+ __raw_writel(value, base + VSCLKDIS_OFFSET);
+
+ value = __raw_readl(base + VDD3P3V_PWDN_OFFSET);
+ value &= ~VDD3P3V_VID_MASK;
+ __raw_writel(value, base + VDD3P3V_PWDN_OFFSET);
+
+ davinci_cfg_reg(DM646X_STSOMUX_DISABLE);
+ davinci_cfg_reg(DM646X_STSIMUX_DISABLE);
+ davinci_cfg_reg(DM646X_PTSOMUX_DISABLE);
+ davinci_cfg_reg(DM646X_PTSIMUX_DISABLE);
+
+ vpif_display_dev.dev.platform_data = config;
+ platform_device_register(&vpif_display_dev);
+}
+
#if defined(CONFIG_TI_DAVINCI_EMAC) || defined(CONFIG_TI_DAVINCI_EMAC_MODULE)
void dm646x_init_emac(struct emac_platform_data *pdata)
diff --git a/arch/arm/mach-davinci/include/mach/dm646x.h b/arch/arm/mach-davinci/include/mach/dm646x.h
index 02ce872..2f9a1d8 100644
--- a/arch/arm/mach-davinci/include/mach/dm646x.h
+++ b/arch/arm/mach-davinci/include/mach/dm646x.h
@@ -12,6 +12,7 @@
#define __ASM_ARCH_DM646X_H
#include <linux/platform_device.h>
+#include <linux/i2c.h>
#include <mach/hardware.h>
#include <mach/emac.h>
@@ -25,4 +26,28 @@
void __init dm646x_init(void);
void dm646x_init_emac(struct emac_platform_data *pdata);
+void dm646x_video_init(void);
+
+struct vpif_output {
+ u16 id;
+ const char *name;
+};
+
+struct subdev_info {
+ u8 addr;
+ const char *name;
+};
+
+struct vpif_config {
+ int (*set_clock)(int, int);
+ struct subdev_info *subdevinfo;
+ int subdev_count;
+ struct vpif_output *output;
+ int output_count;
+ const char *card_name;
+};
+
+
+void dm646x_setup_vpif(struct vpif_config *config);
+
#endif /* __ASM_ARCH_DM646X_H */
--
1.5.6
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