| Message ID | 1251284715-14676-1-git-send-email-swami.iyer@ti.com (mailing list archive) |
|---|---|
| State | Changes Requested |
| Headers | show |
Swaminathan S <swami.iyer@ti.com> writes: > This patch adds platform support for USB controller on DM6467 platform. The > patch sets up the clock, memory map, USB VBUS control logic. > > Signed-off-by: Swaminathan S <swami.iyer@ti.com> I'll wait on this one until you sort out the vbus control generalization. Kevin > -- > arch/arm/mach-davinci/board-dm646x-evm.c | 34 ++++++++++++++++++++++++++++++ > arch/arm/mach-davinci/dm646x.c | 7 ++++++ > 2 files changed, 41 insertions(+), 0 deletions(-) > > diff --git a/arch/arm/mach-davinci/board-dm646x-evm.c b/arch/arm/mach-davinci/board-dm646x-evm.c > index 8c88fd0..aeb4641 100644 > --- a/arch/arm/mach-davinci/board-dm646x-evm.c > +++ b/arch/arm/mach-davinci/board-dm646x-evm.c > @@ -59,6 +59,7 @@ > /* CPLD Register 0 bits to control ATA */ > #define DM646X_EVM_ATA_RST BIT(0) > #define DM646X_EVM_ATA_PWD BIT(1) > +#define DM646X_EVM_USB_VBUS BIT(7) > > #define DM646X_EVM_PHY_MASK (0x2) > #define DM646X_EVM_MDIO_FREQUENCY (2200000) /* PHY bus frequency */ > @@ -80,10 +81,13 @@ static struct davinci_uart_config uart_config __initdata = { > .enabled_uarts = (1 << 0), > }; > > +static struct i2c_client *cpld_reg0_client; > + > /* CPLD Register 0 Client: used for I/O Control */ > static int cpld_reg0_probe(struct i2c_client *client, > const struct i2c_device_id *id) > { > + cpld_reg0_client = client; > if (HAS_ATA) { > u8 data; > struct i2c_msg msg[2] = { > @@ -107,9 +111,39 @@ static int cpld_reg0_probe(struct i2c_client *client, > i2c_transfer(client->adapter, msg + 1, 1); > } > > + setup_usb(500, 8); > + > return 0; > } > > +void usb_vbus_control(u8 on) > +{ > + u8 data; > + struct i2c_msg msg[2] = { > + { > + .addr = cpld_reg0_client->addr, > + .flags = I2C_M_RD, > + .len = 1, > + .buf = &data, > + }, > + { > + .addr = cpld_reg0_client->addr, > + .flags = 0, > + .len = 1, > + .buf = &data, > + }, > + }; > + > + i2c_transfer(cpld_reg0_client->adapter, msg, 1); > + if (on) > + data |= DM646X_EVM_USB_VBUS; > + else > + data &= ~DM646X_EVM_USB_VBUS; > + > + i2c_transfer(cpld_reg0_client->adapter, msg + 1, 1); > +} > +EXPORT_SYMBOL(usb_vbus_control); > + > static const struct i2c_device_id cpld_reg_ids[] = { > { "cpld_reg0", 0, }, > { }, > diff --git a/arch/arm/mach-davinci/dm646x.c b/arch/arm/mach-davinci/dm646x.c > index a9b20e5..edfc22f 100644 > --- a/arch/arm/mach-davinci/dm646x.c > +++ b/arch/arm/mach-davinci/dm646x.c > @@ -315,6 +315,12 @@ static struct clk vpif1_clk = { > .flags = ALWAYS_ENABLED, > }; > > +static struct clk usb_clk = { > + .name = "usb", > + .parent = &pll1_sysclk3, > + .lpsc = DAVINCI_LPSC_USB, > +}; > + > struct davinci_clk dm646x_clks[] = { > CLK(NULL, "ref", &ref_clk), > CLK(NULL, "aux", &aux_clkin), > @@ -355,6 +361,7 @@ struct davinci_clk dm646x_clks[] = { > CLK("palm_bk3710", NULL, &ide_clk), > CLK(NULL, "vpif0", &vpif0_clk), > CLK(NULL, "vpif1", &vpif1_clk), > + CLK(NULL, "usb", &usb_clk), > CLK(NULL, NULL, NULL), > }; > > -- > 1.6.0.rc1.64.g61192 > > _______________________________________________ > Davinci-linux-open-source mailing list > Davinci-linux-open-source@linux.davincidsp.com > http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
diff --git a/arch/arm/mach-davinci/board-dm646x-evm.c b/arch/arm/mach-davinci/board-dm646x-evm.c index 8c88fd0..aeb4641 100644 --- a/arch/arm/mach-davinci/board-dm646x-evm.c +++ b/arch/arm/mach-davinci/board-dm646x-evm.c @@ -59,6 +59,7 @@ /* CPLD Register 0 bits to control ATA */ #define DM646X_EVM_ATA_RST BIT(0) #define DM646X_EVM_ATA_PWD BIT(1) +#define DM646X_EVM_USB_VBUS BIT(7) #define DM646X_EVM_PHY_MASK (0x2) #define DM646X_EVM_MDIO_FREQUENCY (2200000) /* PHY bus frequency */ @@ -80,10 +81,13 @@ static struct davinci_uart_config uart_config __initdata = { .enabled_uarts = (1 << 0), }; +static struct i2c_client *cpld_reg0_client; + /* CPLD Register 0 Client: used for I/O Control */ static int cpld_reg0_probe(struct i2c_client *client, const struct i2c_device_id *id) { + cpld_reg0_client = client; if (HAS_ATA) { u8 data; struct i2c_msg msg[2] = { @@ -107,9 +111,39 @@ static int cpld_reg0_probe(struct i2c_client *client, i2c_transfer(client->adapter, msg + 1, 1); } + setup_usb(500, 8); + return 0; } +void usb_vbus_control(u8 on) +{ + u8 data; + struct i2c_msg msg[2] = { + { + .addr = cpld_reg0_client->addr, + .flags = I2C_M_RD, + .len = 1, + .buf = &data, + }, + { + .addr = cpld_reg0_client->addr, + .flags = 0, + .len = 1, + .buf = &data, + }, + }; + + i2c_transfer(cpld_reg0_client->adapter, msg, 1); + if (on) + data |= DM646X_EVM_USB_VBUS; + else + data &= ~DM646X_EVM_USB_VBUS; + + i2c_transfer(cpld_reg0_client->adapter, msg + 1, 1); +} +EXPORT_SYMBOL(usb_vbus_control); + static const struct i2c_device_id cpld_reg_ids[] = { { "cpld_reg0", 0, }, { }, diff --git a/arch/arm/mach-davinci/dm646x.c b/arch/arm/mach-davinci/dm646x.c index a9b20e5..edfc22f 100644 --- a/arch/arm/mach-davinci/dm646x.c +++ b/arch/arm/mach-davinci/dm646x.c @@ -315,6 +315,12 @@ static struct clk vpif1_clk = { .flags = ALWAYS_ENABLED, }; +static struct clk usb_clk = { + .name = "usb", + .parent = &pll1_sysclk3, + .lpsc = DAVINCI_LPSC_USB, +}; + struct davinci_clk dm646x_clks[] = { CLK(NULL, "ref", &ref_clk), CLK(NULL, "aux", &aux_clkin), @@ -355,6 +361,7 @@ struct davinci_clk dm646x_clks[] = { CLK("palm_bk3710", NULL, &ide_clk), CLK(NULL, "vpif0", &vpif0_clk), CLK(NULL, "vpif1", &vpif1_clk), + CLK(NULL, "usb", &usb_clk), CLK(NULL, NULL, NULL), };
This patch adds platform support for USB controller on DM6467 platform. The patch sets up the clock, memory map, USB VBUS control logic. Signed-off-by: Swaminathan S <swami.iyer@ti.com> -- arch/arm/mach-davinci/board-dm646x-evm.c | 34 ++++++++++++++++++++++++++++++ arch/arm/mach-davinci/dm646x.c | 7 ++++++ 2 files changed, 41 insertions(+), 0 deletions(-)