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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
commit | ace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch) | |
tree | b2d64bc10158fdd5497876388cd68142ca374ed3 /drivers/soc/fsl/qe/usb.c | |
parent | Initial commit. (diff) | |
download | linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip |
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/soc/fsl/qe/usb.c')
-rw-r--r-- | drivers/soc/fsl/qe/usb.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/drivers/soc/fsl/qe/usb.c b/drivers/soc/fsl/qe/usb.c new file mode 100644 index 0000000000..890f236ea6 --- /dev/null +++ b/drivers/soc/fsl/qe/usb.c @@ -0,0 +1,52 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * QE USB routines + * + * Copyright 2006 Freescale Semiconductor, Inc. + * Shlomi Gridish <gridish@freescale.com> + * Jerry Huang <Chang-Ming.Huang@freescale.com> + * Copyright (c) MontaVista Software, Inc. 2008. + * Anton Vorontsov <avorontsov@ru.mvista.com> + */ + +#include <linux/kernel.h> +#include <linux/errno.h> +#include <linux/export.h> +#include <linux/io.h> +#include <soc/fsl/qe/immap_qe.h> +#include <soc/fsl/qe/qe.h> + +int qe_usb_clock_set(enum qe_clock clk, int rate) +{ + struct qe_mux __iomem *mux = &qe_immr->qmx; + unsigned long flags; + u32 val; + + switch (clk) { + case QE_CLK3: val = QE_CMXGCR_USBCS_CLK3; break; + case QE_CLK5: val = QE_CMXGCR_USBCS_CLK5; break; + case QE_CLK7: val = QE_CMXGCR_USBCS_CLK7; break; + case QE_CLK9: val = QE_CMXGCR_USBCS_CLK9; break; + case QE_CLK13: val = QE_CMXGCR_USBCS_CLK13; break; + case QE_CLK17: val = QE_CMXGCR_USBCS_CLK17; break; + case QE_CLK19: val = QE_CMXGCR_USBCS_CLK19; break; + case QE_CLK21: val = QE_CMXGCR_USBCS_CLK21; break; + case QE_BRG9: val = QE_CMXGCR_USBCS_BRG9; break; + case QE_BRG10: val = QE_CMXGCR_USBCS_BRG10; break; + default: + pr_err("%s: requested unknown clock %d\n", __func__, clk); + return -EINVAL; + } + + if (qe_clock_is_brg(clk)) + qe_setbrg(clk, rate, 1); + + spin_lock_irqsave(&cmxgcr_lock, flags); + + qe_clrsetbits_be32(&mux->cmxgcr, QE_CMXGCR_USBCS, val); + + spin_unlock_irqrestore(&cmxgcr_lock, flags); + + return 0; +} +EXPORT_SYMBOL(qe_usb_clock_set); |