usb: ulpi: Extend the existing ulpi framework.
Extend the existing ulpi viewport framework to pass the port number information for any ulpi ops. Fix the usage of ulpi api's accordingly. Tested-by: Stefano Babic <sbabic@denx.de> Acked-by: Igor Grinberg <grinberg@compulab.co.il> Signed-off-by: Govindraj.R <govindraj.raja@ti.com>
This commit is contained in:
Govindraj.R
Albert ARIBAUD
parent
dd54d3147e
commit
3e6e809f56
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@ -120,6 +120,7 @@ static void efika_ehci_init(struct usb_ehci *ehci, uint32_t stp_gpio,
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{
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int ret;
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struct ulpi_regs *ulpi = (struct ulpi_regs *)0;
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struct ulpi_viewport ulpi_vp;
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mxc_request_iomux(stp_gpio, alt0);
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mxc_iomux_set_pad(stp_gpio, PAD_CTL_DRV_HIGH |
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@ -133,23 +134,26 @@ static void efika_ehci_init(struct usb_ehci *ehci, uint32_t stp_gpio,
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mxc_iomux_set_pad(stp_gpio, USB_PAD_CONFIG);
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udelay(10000);
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ret = ulpi_init((u32)&ehci->ulpi_viewpoint);
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ulpi_vp.viewport_addr = (u32)&ehci->ulpi_viewpoint;
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ulpi_vp.port_num = 0;
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ret = ulpi_init(&ulpi_vp);
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if (ret) {
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printf("Efika USB ULPI initialization failed\n");
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return;
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}
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/* ULPI set flags */
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ulpi_write((u32)&ehci->ulpi_viewpoint, &ulpi->otg_ctrl,
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ulpi_write(&ulpi_vp, &ulpi->otg_ctrl,
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ULPI_OTG_DP_PULLDOWN | ULPI_OTG_DM_PULLDOWN |
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ULPI_OTG_EXTVBUSIND);
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ulpi_write((u32)&ehci->ulpi_viewpoint, &ulpi->function_ctrl,
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ulpi_write(&ulpi_vp, &ulpi->function_ctrl,
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ULPI_FC_FULL_SPEED | ULPI_FC_OPMODE_NORMAL |
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ULPI_FC_SUSPENDM);
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ulpi_write((u32)&ehci->ulpi_viewpoint, &ulpi->iface_ctrl, 0);
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ulpi_write(&ulpi_vp, &ulpi->iface_ctrl, 0);
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/* Set VBus */
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ulpi_write((u32)&ehci->ulpi_viewpoint, &ulpi->otg_ctrl_set,
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ulpi_write(&ulpi_vp, &ulpi->otg_ctrl_set,
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ULPI_OTG_DRVVBUS | ULPI_OTG_DRVVBUS_EXT);
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/*
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@ -158,8 +162,7 @@ static void efika_ehci_init(struct usb_ehci *ehci, uint32_t stp_gpio,
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* NOTE: This violates USB specification, but otherwise, USB on Efika
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* doesn't work.
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*/
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ulpi_write((u32)&ehci->ulpi_viewpoint, &ulpi->otg_ctrl_set,
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ULPI_OTG_CHRGVBUS);
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ulpi_write(&ulpi_vp, &ulpi->otg_ctrl_set, ULPI_OTG_CHRGVBUS);
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}
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int board_ehci_hcd_init(int port)
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@ -177,9 +180,12 @@ void ehci_powerup_fixup(uint32_t *status_reg, uint32_t *reg)
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uint32_t port = OTG_BASE_ADDR + (0x200 * CONFIG_MXC_USB_PORT);
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struct usb_ehci *ehci = (struct usb_ehci *)port;
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struct ulpi_regs *ulpi = (struct ulpi_regs *)0;
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struct ulpi_viewport ulpi_vp;
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ulpi_write((u32)&ehci->ulpi_viewpoint, &ulpi->otg_ctrl_set,
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ULPI_OTG_CHRGVBUS);
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ulpi_vp.viewport_addr = (u32)&ehci->ulpi_viewpoint;
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ulpi_vp.port_num = 0;
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ulpi_write(&ulpi_vp, &ulpi->otg_ctrl_set, ULPI_OTG_CHRGVBUS);
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wait_ms(50);
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@ -40,13 +40,13 @@
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*
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* returns 0 on mask match, ULPI_ERROR on time out.
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*/
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static int ulpi_wait(u32 ulpi_viewport, u32 mask)
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static int ulpi_wait(struct ulpi_viewport *ulpi_vp, u32 mask)
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{
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int timeout = CONFIG_USB_ULPI_TIMEOUT;
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/* Wait for the bits in mask to become zero. */
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while (--timeout) {
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if ((readl(ulpi_viewport) & mask) == 0)
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if ((readl(ulpi_vp->viewport_addr) & mask) == 0)
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return 0;
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udelay(1);
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@ -60,16 +60,16 @@ static int ulpi_wait(u32 ulpi_viewport, u32 mask)
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*
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* returns 0 on success.
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*/
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static int ulpi_wakeup(u32 ulpi_viewport)
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static int ulpi_wakeup(struct ulpi_viewport *ulpi_vp)
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{
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int err;
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if (readl(ulpi_viewport) & ULPI_SS)
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if (readl(ulpi_vp->viewport_addr) & ULPI_SS)
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return 0; /* already awake */
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writel(ULPI_WU, ulpi_viewport);
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writel(ULPI_WU, ulpi_vp->viewport_addr);
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err = ulpi_wait(ulpi_viewport, ULPI_WU);
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err = ulpi_wait(ulpi_vp, ULPI_WU);
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if (err)
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printf("ULPI wakeup timed out\n");
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@ -81,38 +81,40 @@ static int ulpi_wakeup(u32 ulpi_viewport)
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*
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* @value - the ULPI request
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*/
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static int ulpi_request(u32 ulpi_viewport, u32 value)
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static int ulpi_request(struct ulpi_viewport *ulpi_vp, u32 value)
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{
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int err;
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err = ulpi_wakeup(ulpi_viewport);
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err = ulpi_wakeup(ulpi_vp);
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if (err)
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return err;
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writel(value, ulpi_viewport);
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writel(value, ulpi_vp->viewport_addr);
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err = ulpi_wait(ulpi_viewport, ULPI_RWRUN);
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err = ulpi_wait(ulpi_vp, ULPI_RWRUN);
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if (err)
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printf("ULPI request timed out\n");
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return err;
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}
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int ulpi_write(u32 ulpi_viewport, u8 *reg, u32 value)
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int ulpi_write(struct ulpi_viewport *ulpi_vp, u8 *reg, u32 value)
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{
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u32 val = ULPI_RWRUN | ULPI_RWCTRL | ((u32)reg << 16) | (value & 0xff);
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return ulpi_request(ulpi_viewport, val);
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val |= (ulpi_vp->port_num & 0x7) << 24;
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return ulpi_request(ulpi_vp, val);
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}
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u32 ulpi_read(u32 ulpi_viewport, u8 *reg)
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u32 ulpi_read(struct ulpi_viewport *ulpi_vp, u8 *reg)
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{
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int err;
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u32 val = ULPI_RWRUN | ((u32)reg << 16);
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err = ulpi_request(ulpi_viewport, val);
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val |= (ulpi_vp->port_num & 0x7) << 24;
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err = ulpi_request(ulpi_vp, val);
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if (err)
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return err;
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return (readl(ulpi_viewport) >> 8) & 0xff;
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return (readl(ulpi_vp->viewport_addr) >> 8) & 0xff;
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}
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@ -37,18 +37,18 @@
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static struct ulpi_regs *ulpi = (struct ulpi_regs *)0;
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static int ulpi_integrity_check(u32 ulpi_viewport)
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static int ulpi_integrity_check(struct ulpi_viewport *ulpi_vp)
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{
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u32 val, tval = ULPI_TEST_VALUE;
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int err, i;
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/* Use the 'special' test value to check all bits */
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for (i = 0; i < 2; i++, tval <<= 1) {
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err = ulpi_write(ulpi_viewport, &ulpi->scratch, tval);
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err = ulpi_write(ulpi_vp, &ulpi->scratch, tval);
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if (err)
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return err;
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val = ulpi_read(ulpi_viewport, &ulpi->scratch);
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val = ulpi_read(ulpi_vp, &ulpi->scratch);
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if (val != tval) {
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printf("ULPI integrity check failed\n");
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return val;
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@ -58,7 +58,7 @@ static int ulpi_integrity_check(u32 ulpi_viewport)
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return 0;
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}
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int ulpi_init(u32 ulpi_viewport)
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int ulpi_init(struct ulpi_viewport *ulpi_vp)
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{
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u32 val, id = 0;
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u8 *reg = &ulpi->product_id_high;
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@ -66,7 +66,7 @@ int ulpi_init(u32 ulpi_viewport)
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/* Assemble ID from four ULPI ID registers (8 bits each). */
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for (i = 0; i < ULPI_ID_REGS_COUNT; i++) {
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val = ulpi_read(ulpi_viewport, reg - i);
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val = ulpi_read(ulpi_vp, reg - i);
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if (val == ULPI_ERROR)
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return val;
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@ -76,10 +76,10 @@ int ulpi_init(u32 ulpi_viewport)
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/* Split ID into vendor and product ID. */
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debug("ULPI transceiver ID 0x%04x:0x%04x\n", id >> 16, id & 0xffff);
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return ulpi_integrity_check(ulpi_viewport);
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return ulpi_integrity_check(ulpi_vp);
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}
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int ulpi_select_transceiver(u32 ulpi_viewport, unsigned speed)
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int ulpi_select_transceiver(struct ulpi_viewport *ulpi_vp, unsigned speed)
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{
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u32 tspeed = ULPI_FC_FULL_SPEED;
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u32 val;
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@ -96,17 +96,18 @@ int ulpi_select_transceiver(u32 ulpi_viewport, unsigned speed)
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"falling back to full speed\n", __func__, speed);
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}
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val = ulpi_read(ulpi_viewport, &ulpi->function_ctrl);
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val = ulpi_read(ulpi_vp, &ulpi->function_ctrl);
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if (val == ULPI_ERROR)
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return val;
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/* clear the previous speed setting */
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val = (val & ~ULPI_FC_XCVRSEL_MASK) | tspeed;
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return ulpi_write(ulpi_viewport, &ulpi->function_ctrl, val);
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return ulpi_write(ulpi_vp, &ulpi->function_ctrl, val);
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}
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int ulpi_set_vbus(u32 ulpi_viewport, int on, int ext_power, int ext_ind)
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int ulpi_set_vbus(struct ulpi_viewport *ulpi_vp, int on, int ext_power,
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int ext_ind)
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{
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u32 flags = ULPI_OTG_DRVVBUS;
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u8 *reg = on ? &ulpi->otg_ctrl_set : &ulpi->otg_ctrl_clear;
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@ -116,18 +117,18 @@ int ulpi_set_vbus(u32 ulpi_viewport, int on, int ext_power, int ext_ind)
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if (ext_ind)
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flags |= ULPI_OTG_EXTVBUSIND;
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return ulpi_write(ulpi_viewport, reg, flags);
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return ulpi_write(ulpi_vp, reg, flags);
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}
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int ulpi_set_pd(u32 ulpi_viewport, int enable)
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int ulpi_set_pd(struct ulpi_viewport *ulpi_vp, int enable)
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{
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u32 val = ULPI_OTG_DP_PULLDOWN | ULPI_OTG_DM_PULLDOWN;
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u8 *reg = enable ? &ulpi->otg_ctrl_set : &ulpi->otg_ctrl_clear;
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return ulpi_write(ulpi_viewport, reg, val);
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return ulpi_write(ulpi_vp, reg, val);
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}
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int ulpi_opmode_sel(u32 ulpi_viewport, unsigned opmode)
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int ulpi_opmode_sel(struct ulpi_viewport *ulpi_vp, unsigned opmode)
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{
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u32 topmode = ULPI_FC_OPMODE_NORMAL;
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u32 val;
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@ -144,17 +145,17 @@ int ulpi_opmode_sel(u32 ulpi_viewport, unsigned opmode)
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"falling back to OpMode Normal\n", __func__, opmode);
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}
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val = ulpi_read(ulpi_viewport, &ulpi->function_ctrl);
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val = ulpi_read(ulpi_vp, &ulpi->function_ctrl);
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if (val == ULPI_ERROR)
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return val;
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/* clear the previous opmode setting */
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val = (val & ~ULPI_FC_OPMODE_MASK) | topmode;
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return ulpi_write(ulpi_viewport, &ulpi->function_ctrl, val);
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return ulpi_write(ulpi_vp, &ulpi->function_ctrl, val);
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}
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int ulpi_serial_mode_enable(u32 ulpi_viewport, unsigned smode)
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int ulpi_serial_mode_enable(struct ulpi_viewport *ulpi_vp, unsigned smode)
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{
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switch (smode) {
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case ULPI_IFACE_6_PIN_SERIAL_MODE:
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@ -166,14 +167,14 @@ int ulpi_serial_mode_enable(u32 ulpi_viewport, unsigned smode)
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return ULPI_ERROR;
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}
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return ulpi_write(ulpi_viewport, &ulpi->iface_ctrl_set, smode);
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return ulpi_write(ulpi_vp, &ulpi->iface_ctrl_set, smode);
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}
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int ulpi_suspend(u32 ulpi_viewport)
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int ulpi_suspend(struct ulpi_viewport *ulpi_vp)
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{
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int err;
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err = ulpi_write(ulpi_viewport, &ulpi->function_ctrl_clear,
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err = ulpi_write(ulpi_vp, &ulpi->function_ctrl_clear,
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ULPI_FC_SUSPENDM);
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if (err)
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printf("ULPI: %s: failed writing the suspend bit\n", __func__);
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@ -186,7 +187,7 @@ int ulpi_suspend(u32 ulpi_viewport)
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* Actual wait for reset must be done in a view port specific way,
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* because it involves checking the DIR line.
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*/
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static int __ulpi_reset_wait(u32 ulpi_viewport)
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static int __ulpi_reset_wait(struct ulpi_viewport *ulpi_vp)
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{
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u32 val;
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int timeout = CONFIG_USB_ULPI_TIMEOUT;
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@ -199,7 +200,7 @@ static int __ulpi_reset_wait(u32 ulpi_viewport)
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* for the error of ulpi_read(), if there is one, then
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* there will be a timeout.
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*/
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val = ulpi_read(ulpi_viewport, &ulpi->function_ctrl);
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val = ulpi_read(ulpi_vp, &ulpi->function_ctrl);
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if (!(val & ULPI_FC_RESET))
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return 0;
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@ -210,18 +211,19 @@ static int __ulpi_reset_wait(u32 ulpi_viewport)
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return ULPI_ERROR;
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}
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int ulpi_reset_wait(u32) __attribute__((weak, alias("__ulpi_reset_wait")));
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int ulpi_reset_wait(struct ulpi_viewport *ulpi_vp)
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__attribute__((weak, alias("__ulpi_reset_wait")));
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int ulpi_reset(u32 ulpi_viewport)
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int ulpi_reset(struct ulpi_viewport *ulpi_vp)
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{
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int err;
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err = ulpi_write(ulpi_viewport,
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err = ulpi_write(ulpi_vp,
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&ulpi->function_ctrl_set, ULPI_FC_RESET);
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if (err) {
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printf("ULPI: %s: failed writing reset bit\n", __func__);
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return err;
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}
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return ulpi_reset_wait(ulpi_viewport);
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return ulpi_reset_wait(ulpi_vp);
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}
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@ -27,13 +27,24 @@
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#define CONFIG_USB_ULPI_TIMEOUT 1000 /* timeout in us */
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#endif
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/*
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* ulpi view port address and
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* Port_number that can be passed.
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* Any additional data to be passed can
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* be extended from this structure
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*/
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struct ulpi_viewport {
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u32 viewport_addr;
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u32 port_num;
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};
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/*
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* Initialize the ULPI transciever and check the interface integrity.
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* @ulpi_viewport - the address of the ULPI viewport register.
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* @ulpi_vp - structure containing ULPI viewport data
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*
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* returns 0 on success, ULPI_ERROR on failure.
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*/
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int ulpi_init(u32 ulpi_viewport);
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int ulpi_init(struct ulpi_viewport *ulpi_vp);
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/*
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* Select transceiver speed.
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@ -41,7 +52,7 @@ int ulpi_init(u32 ulpi_viewport);
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* ULPI_FC_LOW_SPEED, ULPI_FC_FS4LS
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* returns 0 on success, ULPI_ERROR on failure.
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*/
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int ulpi_select_transceiver(u32 ulpi_viewport, unsigned speed);
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int ulpi_select_transceiver(struct ulpi_viewport *ulpi_vp, unsigned speed);
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/*
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* Enable/disable VBUS.
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@ -50,14 +61,15 @@ int ulpi_select_transceiver(u32 ulpi_viewport, unsigned speed);
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*
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* returns 0 on success, ULPI_ERROR on failure.
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*/
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int ulpi_enable_vbus(u32 ulpi_viewport, int on, int ext_power, int ext_ind);
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int ulpi_enable_vbus(struct ulpi_viewport *ulpi_vp,
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int on, int ext_power, int ext_ind);
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/*
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* Enable/disable pull-down resistors on D+ and D- USB lines.
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*
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* returns 0 on success, ULPI_ERROR on failure.
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*/
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int ulpi_set_pd(u32 ulpi_viewport, int enable);
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int ulpi_set_pd(struct ulpi_viewport *ulpi_vp, int enable);
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/*
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* Select OpMode.
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@ -66,7 +78,7 @@ int ulpi_set_pd(u32 ulpi_viewport, int enable);
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*
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* returns 0 on success, ULPI_ERROR on failure.
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*/
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int ulpi_opmode_sel(u32 ulpi_viewport, unsigned opmode);
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int ulpi_opmode_sel(struct ulpi_viewport *ulpi_vp, unsigned opmode);
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/*
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* Switch to Serial Mode.
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@ -78,7 +90,7 @@ int ulpi_opmode_sel(u32 ulpi_viewport, unsigned opmode);
|
|||
* Switches immediately to Serial Mode.
|
||||
* To return from Serial Mode, STP line needs to be asserted.
|
||||
*/
|
||||
int ulpi_serial_mode_enable(u32 ulpi_viewport, unsigned smode);
|
||||
int ulpi_serial_mode_enable(struct ulpi_viewport *ulpi_vp, unsigned smode);
|
||||
|
||||
/*
|
||||
* Put PHY into low power mode.
|
||||
|
|
@ -89,14 +101,14 @@ int ulpi_serial_mode_enable(u32 ulpi_viewport, unsigned smode);
|
|||
* STP line must be driven low to keep the PHY in suspend.
|
||||
* To resume the PHY, STP line needs to be asserted.
|
||||
*/
|
||||
int ulpi_suspend(u32 ulpi_viewport);
|
||||
int ulpi_suspend(struct ulpi_viewport *ulpi_vp);
|
||||
|
||||
/*
|
||||
* Reset the transceiver. ULPI interface and registers are not affected.
|
||||
*
|
||||
* returns 0 on success, ULPI_ERROR on failure.
|
||||
*/
|
||||
int ulpi_reset(u32 ulpi_viewport);
|
||||
int ulpi_reset(struct ulpi_viewport *ulpi_vp);
|
||||
|
||||
|
||||
/* ULPI access methods below must be implemented for each ULPI viewport. */
|
||||
|
|
@ -108,7 +120,7 @@ int ulpi_reset(u32 ulpi_viewport);
|
|||
*
|
||||
* returns 0 on success, ULPI_ERROR on failure.
|
||||
*/
|
||||
int ulpi_write(u32 ulpi_viewport, u8 *reg, u32 value);
|
||||
int ulpi_write(struct ulpi_viewport *ulpi_vp, u8 *reg, u32 value);
|
||||
|
||||
/*
|
||||
* Read the ULPI PHY register content via the viewport.
|
||||
|
|
@ -116,14 +128,14 @@ int ulpi_write(u32 ulpi_viewport, u8 *reg, u32 value);
|
|||
*
|
||||
* returns register content on success, ULPI_ERROR on failure.
|
||||
*/
|
||||
u32 ulpi_read(u32 ulpi_viewport, u8 *reg);
|
||||
u32 ulpi_read(struct ulpi_viewport *ulpi_vp, u8 *reg);
|
||||
|
||||
/*
|
||||
* Wait for the reset to complete.
|
||||
* The Link must not attempt to access the PHY until the reset has
|
||||
* completed and DIR line is de-asserted.
|
||||
*/
|
||||
int ulpi_reset_wait(u32 ulpi_viewport);
|
||||
int ulpi_reset_wait(struct ulpi_viewport *ulpi_vp);
|
||||
|
||||
/* Access Extended Register Set (indicator) */
|
||||
#define ACCESS_EXT_REGS_OFFSET 0x2f /* read-write */
|
||||
|
|
|
|||
Loading…
Reference in New Issue