projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 5e41486c AV |
1 | /* |
| 2 | * QE USB routines | |
| 3 | * | |
| 8a56e1ee | 4 | * Copyright 2006 Freescale Semiconductor, Inc. |
| 5e41486c AV |
5 | * Shlomi Gridish <gridish@freescale.com> |
| 6 | * Jerry Huang <Chang-Ming.Huang@freescale.com> | |
| 7 | * Copyright (c) MontaVista Software, Inc. 2008. | |
| 8 | * Anton Vorontsov <avorontsov@ru.mvista.com> | |
| 9 | * | |
| 10 | * This program is free software; you can redistribute it and/or modify it | |
| 11 | * under the terms of the GNU General Public License as published by the | |
| 12 | * Free Software Foundation; either version 2 of the License, or (at your | |
| 13 | * option) any later version. | |
| 14 | */ | |
| 15 | ||
| 16 | #include <linux/kernel.h> | |
| 17 | #include <linux/errno.h> | |
| 93087948 | 18 | #include <linux/export.h> |
| 5e41486c AV |
19 | #include <linux/io.h> |
| 20 | #include <asm/immap_qe.h> | |
| 21 | #include <asm/qe.h> | |
| 22 | ||
| 23 | int qe_usb_clock_set(enum qe_clock clk, int rate) | |
| 24 | { | |
| 25 | struct qe_mux __iomem *mux = &qe_immr->qmx; | |
| 26 | unsigned long flags; | |
| 27 | u32 val; | |
| 28 | ||
| 29 | switch (clk) { | |
| 30 | case QE_CLK3: val = QE_CMXGCR_USBCS_CLK3; break; | |
| 31 | case QE_CLK5: val = QE_CMXGCR_USBCS_CLK5; break; | |
| 32 | case QE_CLK7: val = QE_CMXGCR_USBCS_CLK7; break; | |
| 33 | case QE_CLK9: val = QE_CMXGCR_USBCS_CLK9; break; | |
| 34 | case QE_CLK13: val = QE_CMXGCR_USBCS_CLK13; break; | |
| 35 | case QE_CLK17: val = QE_CMXGCR_USBCS_CLK17; break; | |
| 36 | case QE_CLK19: val = QE_CMXGCR_USBCS_CLK19; break; | |
| 37 | case QE_CLK21: val = QE_CMXGCR_USBCS_CLK21; break; | |
| 38 | case QE_BRG9: val = QE_CMXGCR_USBCS_BRG9; break; | |
| 39 | case QE_BRG10: val = QE_CMXGCR_USBCS_BRG10; break; | |
| 40 | default: | |
| 41 | pr_err("%s: requested unknown clock %d\n", __func__, clk); | |
| 42 | return -EINVAL; | |
| 43 | } | |
| 44 | ||
| 45 | if (qe_clock_is_brg(clk)) | |
| 46 | qe_setbrg(clk, rate, 1); | |
| 47 | ||
| 48 | spin_lock_irqsave(&cmxgcr_lock, flags); | |
| 49 | ||
| 50 | clrsetbits_be32(&mux->cmxgcr, QE_CMXGCR_USBCS, val); | |
| 51 | ||
| 52 | spin_unlock_irqrestore(&cmxgcr_lock, flags); | |
| 53 | ||
| 54 | return 0; | |
| 55 | } | |
| 56 | EXPORT_SYMBOL(qe_usb_clock_set); |