On 13/06/14 15:25, Felipe Balbi wrote:
> Hi,
>
>> + +#define FIRMWARE_NAME "r8a779x_usb3_v1.dlmem"
>> +MODULE_FIRMWARE(FIRMWARE_NAME);
Where can we get this from, it would be nice to test this.
>> +/*** Register Offset ***/ +#define RCAR_USB3_INT_ENA 0x224 /*
>> Interrupt Enable */ +#define RCAR_USB3_DL_CTRL 0x250 /* FW
>> Download Control & Status */ +#define RCAR_USB3_FW_DATA0 0x258
>> /* FW Data0 */ + +#define RCAR_USB3_LCLK 0xa44 /* LCLK Select */
>> +#define RCAR_USB3_CONF1 0xa48 /* USB3.0 Configuration1 */
>> +#define RCAR_USB3_CONF2 0xa5c /* USB3.0 Configuration2 */
>> +#define RCAR_USB3_CONF3 0xaa8 /* USB3.0 Configuration3 */
>> +#define RCAR_USB3_RX_POL 0xab0 /* USB3.0 RX Polarity */
>> +#define RCAR_USB3_TX_POL 0xab8 /* USB3.0 TX Polarity */ + +/***
>> Register Settings ***/ +/* Interrupt Enable */ +#define
>> RCAR_USB3_INT_XHC_ENA 0x00000001 +#define RCAR_USB3_INT_PME_ENA
>> 0x00000002 +#define RCAR_USB3_INT_HSE_ENA 0x00000004 +#define
>> RCAR_USB3_INT_ENA_VAL (RCAR_USB3_INT_XHC_ENA | \ +
>> RCAR_USB3_INT_PME_ENA | RCAR_USB3_INT_HSE_ENA) + +/* FW Download
>> Control & Status */ +#define RCAR_USB3_DL_CTRL_ENABLE 0x00000001
>> +#define RCAR_USB3_DL_CTRL_FW_SUCCESS 0x00000010 +#define
>> RCAR_USB3_DL_CTRL_FW_SET_DATA0 0x00000100 + +/* LCLK Select */
>> +#define RCAR_USB3_LCLK_ENA_VAL 0x01030001 + +/* USB3.0
>> Configuration */ +#define RCAR_USB3_CONF1_VAL 0x00030204
>> +#define RCAR_USB3_CONF2_VAL 0x00030300 +#define
>> RCAR_USB3_CONF3_VAL 0x13802007 + +/* USB3.0 Polarity */ +#define
>> RCAR_USB3_RX_POL_VAL BIT(21) +#define RCAR_USB3_TX_POL_VAL BIT(4)
>> + +void xhci_rcar_start(struct usb_hcd *hcd) +{ + u32 temp; + +
>> if (hcd->regs != NULL) { + /* Interrupt Enable */ + temp =
>> readl(hcd->regs + RCAR_USB3_INT_ENA); + temp |=
>> RCAR_USB3_INT_ENA_VAL; + writel(temp, hcd->regs +
>> RCAR_USB3_INT_ENA); + /* LCLK Select */ +
>> writel(RCAR_USB3_LCLK_ENA_VAL, hcd->regs + RCAR_USB3_LCLK); +
>> /* USB3.0 Configuration */ + writel(RCAR_USB3_CONF1_VAL,
>> hcd->regs + RCAR_USB3_CONF1); + writel(RCAR_USB3_CONF2_VAL,
>> hcd->regs + RCAR_USB3_CONF2); + writel(RCAR_USB3_CONF3_VAL,
>> hcd->regs + RCAR_USB3_CONF3); + /* USB3.0 Polarity */ +
>> writel(RCAR_USB3_RX_POL_VAL, hcd->regs + RCAR_USB3_RX_POL); +
>> writel(RCAR_USB3_TX_POL_VAL, hcd->regs + RCAR_USB3_TX_POL); + }
>> +} + +static int xhci_rcar_download_firmware(struct device *dev,
>> void __iomem *regs) +{ + const struct firmware *fw; + int
>> retval, index, j, time; + int timeout = 10000; + u32 data, val,
>> temp; + + /* request R-Car USB3.0 firmware */ + retval =
>> request_firmware(&fw, FIRMWARE_NAME, dev); + if (retval) + return
>> retval; + + /* download R-Car USB3.0 firmware */ + temp =
>> readl(regs + RCAR_USB3_DL_CTRL); + temp |=
>> RCAR_USB3_DL_CTRL_ENABLE; + writel(temp, regs +
>> RCAR_USB3_DL_CTRL); + + for (index = 0; index < fw->size; index
>> += 4) { + /* to avoid reading beyond the end of the buffer */ +
>> for (data = 0, j = 3; j >= 0; j--) { + if ((j + index) <
>> fw->size) + data |= fw->data[index + j] << (8 * j); + } +
>> writel(data, regs + RCAR_USB3_FW_DATA0); + temp = readl(regs +
>> RCAR_USB3_DL_CTRL); + temp |= RCAR_USB3_DL_CTRL_FW_SET_DATA0; +
>> writel(temp, regs + RCAR_USB3_DL_CTRL); + + for (time = 0; time
>> < timeout; time++) { + val = readl(regs + RCAR_USB3_DL_CTRL);
>> + if ((val & RCAR_USB3_DL_CTRL_FW_SET_DATA0) == 0) + break; +
>> udelay(1); + } + if (time == timeout) { + retval =
>> -ETIMEDOUT; + break; + } + } + + temp = readl(regs +
>> RCAR_USB3_DL_CTRL); + temp &= ~RCAR_USB3_DL_CTRL_ENABLE; +
>> writel(temp, regs + RCAR_USB3_DL_CTRL); + + for (time = 0; time
>> < timeout; time++) { + val = readl(regs + RCAR_USB3_DL_CTRL); +
>> if (val & RCAR_USB3_DL_CTRL_FW_SUCCESS) { + retval = 0; +
>> break; + } + udelay(1); + } + if (time == timeout) + retval =
>> -ETIMEDOUT; + + release_firmware(fw); + + return retval; +} +
>> +/* This function needs to initialize a "phy" of usb before */
>
> initializing a PHY looks like something that the PHY layer should
> do. Why don't you write a PHY driver and teach xhci-core about
> PHYs ? Then, more people would benefit.
The rcar phy code should already do this, so I agree.
--
Ben Dooks http://www.codethink.co.uk/
Senior Engineer Codethink - Providing Genius
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