Chaithrika U S <[email protected]> writes:
> Add pin mux definitions, display device setup, clock setup functions
>
> Add pin mux related code for the display device, also 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.
>
> Signed-off-by: Chaithrika U S <[email protected]>
Chaithrika,
Sorry I wasn't a little more clear on this.
What I meant was that this patch could be just adding the definitions
of the clocks and the mux regs in a small patch. Basically, adding the
chip-specific definitions in a small patch, then a separate patch for
all the board-specific platform init and platform data which would go
along with the rest of the video driver series.
Details below...
> ---
> arch/arm/mach-davinci/board-dm646x-evm.c | 107
> +++++++++++++++++++++++++++
> arch/arm/mach-davinci/dm646x.c | 101 +++++++++++++++++++++++++
> arch/arm/mach-davinci/include/mach/dm646x.h | 9 ++
> arch/arm/mach-davinci/include/mach/mux.h | 17 ++++
> 4 files changed, 234 insertions(+), 0 deletions(-)
>
> diff --git a/arch/arm/mach-davinci/board-dm646x-evm.c
> b/arch/arm/mach-davinci/board-dm646x-evm.c
> index 907f424..2699979 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>
> @@ -46,6 +47,19 @@
> #include <linux/etherdevice.h>
> #include <mach/emac.h>
>
> +#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 davinci_uart_config uart_config __initdata = {
> .enabled_uarts = (1 << 0),
> };
> @@ -95,11 +109,54 @@ 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 = {
> @@ -107,10 +164,59 @@ 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 struct vpif_config dm646x_vpif_config = {
> + .set_clock = set_vpif_clock,
> +};
> +
> 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)
> @@ -123,6 +229,7 @@ static __init void evm_init(void)
> {
> evm_init_i2c();
> davinci_serial_init(&uart_config);
> + dm646x_setup_vpif(&dm646x_vpif_config);
> }
>
All this board-specific setup could go into a separate board specific patch
which would go in with the driver itself.
> 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 af040cf..7304183 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
> */
> @@ -230,6 +240,20 @@ static struct clk timer2_clk = {
> .flags = ALWAYS_ENABLED, /* no LPSC, always enabled; c.f. spruep9a */
> };
>
> +static struct clk vpif0_clk = {
> + .name = "vpif0",
> + .parent = &ref_clk,
> + .lpsc = DM646X_LPSC_VPSSMSTR,
> + .flags = ALWAYS_ENABLED,
> +};
> +
> +static struct clk vpif1_clk = {
> + .name = "vpif1",
> + .parent = &ref_clk,
> + .lpsc = DM646X_LPSC_VPSSSLV,
> + .flags = ALWAYS_ENABLED,
> +};
> +
>
> struct davinci_clk dm646x_clks[] = {
> CLK(NULL, "ref", &ref_clk),
> CLK(NULL, "aux", &aux_clkin),
> @@ -260,6 +284,8 @@ struct davinci_clk dm646x_clks[] = {
> CLK(NULL, "timer0", &timer0_clk),
> CLK(NULL, "timer1", &timer1_clk),
> CLK("watchdog", NULL, &timer2_clk),
> + CLK(NULL, "vpif0", &vpif0_clk),
> + CLK(NULL, "vpif1", &vpif1_clk),
> CLK(NULL, NULL, NULL),
> };
>
These chip-specific clock defines in a patch that can go in now.
> @@ -275,6 +301,28 @@ MUX_CFG(DM646X, ATAEN, 0, 0, 1, 1,
> true)
> MUX_CFG(DM646X, AUDCK1, 0, 29, 1, 0, false)
>
> MUX_CFG(DM646X, AUDCK0, 0, 28, 1, 0, false)
> +
> +MUX_CFG(DM646X, CRGMUX, 0, 24, 7, 5, true)
> +
> +MUX_CFG(DM646X, STSOMUX_DISABLE, 0, 22, 3, 0, true)
> +
> +MUX_CFG(DM646X, STSIMUX_DISABLE, 0, 20, 3, 0, true)
> +
> +MUX_CFG(DM646X, PTSOMUX_DISABLE, 0, 18, 3, 0, true)
> +
> +MUX_CFG(DM646X, PTSIMUX_DISABLE, 0, 16, 3, 0, true)
> +
> +MUX_CFG(DM646X, STSOMUX, 0, 22, 3, 2, true)
> +
> +MUX_CFG(DM646X, STSIMUX, 0, 20, 3, 2, true)
> +
> +MUX_CFG(DM646X, PTSOMUX_PARALLEL, 0, 18, 3, 2, true)
> +
> +MUX_CFG(DM646X, PTSIMUX_PARALLEL, 0, 16, 3, 2, true)
> +
> +MUX_CFG(DM646X, PTSOMUX_SERIAL, 0, 18, 3, 3, true)
> +
> +MUX_CFG(DM646X, PTSIMUX_SERIAL, 0, 16, 3, 3, true)
> };
>
As well as these MUX defines.
The rest of this is board-specific init and platform data that is best
kept as a separate patch that can go along with the video driver.
> /*----------------------------------------------------------------------*/
> @@ -345,8 +393,61 @@ 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);
> +}
>
> void __init dm646x_init(void)
> {
> diff --git a/arch/arm/mach-davinci/include/mach/dm646x.h
> b/arch/arm/mach-davinci/include/mach/dm646x.h
> index d917939..22c08d6 100644
> --- a/arch/arm/mach-davinci/include/mach/dm646x.h
> +++ b/arch/arm/mach-davinci/include/mach/dm646x.h
> @@ -12,7 +12,16 @@
> #define __ASM_ARCH_DM646X_H
>
> #include <mach/hardware.h>
> +#include <linux/i2c.h>
>
> void __init dm646x_init(void);
>
> +void dm646x_video_init(void);
> +
> +struct vpif_config {
> + int (*set_clock)(int, int);
> +};
> +
> +void dm646x_setup_vpif(struct vpif_config *config);
> +
> #endif /* __ASM_ARCH_DM646X_H */
> diff --git a/arch/arm/mach-davinci/include/mach/mux.h
> b/arch/arm/mach-davinci/include/mach/mux.h
> index cd95629..557bebf 100644
> --- a/arch/arm/mach-davinci/include/mach/mux.h
> +++ b/arch/arm/mach-davinci/include/mach/mux.h
> @@ -109,6 +109,23 @@ enum davinci_dm646x_index {
> /* AUDIO Clock */
> DM646X_AUDCK1,
> DM646X_AUDCK0,
> +
> + /* CRGEN Control */
> + DM646X_CRGMUX,
> +
> + /* VPIF Control */
> + DM646X_STSOMUX_DISABLE,
> + DM646X_STSIMUX_DISABLE,
> + DM646X_PTSOMUX_DISABLE,
> + DM646X_PTSIMUX_DISABLE,
> +
> + /* TSIF Control */
> + DM646X_STSOMUX,
> + DM646X_STSIMUX,
> + DM646X_PTSOMUX_PARALLEL,
> + DM646X_PTSIMUX_PARALLEL,
> + DM646X_PTSOMUX_SERIAL,
> + DM646X_PTSIMUX_SERIAL,
> };
>
> enum davinci_dm355_index {
> --
> 1.5.6
>
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