Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
62 lines
1.4 KiB
C
62 lines
1.4 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright 2019 NXP.
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*/
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#include <linux/device.h>
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#include <linux/of.h>
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#include <linux/slab.h>
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#include "dcss-dev.h"
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#define DCSS_BLKCTL_RESET_CTRL 0x00
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#define B_CLK_RESETN BIT(0)
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#define APB_CLK_RESETN BIT(1)
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#define P_CLK_RESETN BIT(2)
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#define RTR_CLK_RESETN BIT(4)
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#define DCSS_BLKCTL_CONTROL0 0x10
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#define HDMI_MIPI_CLK_SEL BIT(0)
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#define DISPMIX_REFCLK_SEL_POS 4
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#define DISPMIX_REFCLK_SEL_MASK GENMASK(5, 4)
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#define DISPMIX_PIXCLK_SEL BIT(8)
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#define HDMI_SRC_SECURE_EN BIT(16)
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struct dcss_blkctl {
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struct dcss_dev *dcss;
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void __iomem *base_reg;
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};
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void dcss_blkctl_cfg(struct dcss_blkctl *blkctl)
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{
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if (blkctl->dcss->hdmi_output)
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dcss_writel(0, blkctl->base_reg + DCSS_BLKCTL_CONTROL0);
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else
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dcss_writel(DISPMIX_PIXCLK_SEL,
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blkctl->base_reg + DCSS_BLKCTL_CONTROL0);
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dcss_set(B_CLK_RESETN | APB_CLK_RESETN | P_CLK_RESETN | RTR_CLK_RESETN,
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blkctl->base_reg + DCSS_BLKCTL_RESET_CTRL);
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}
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int dcss_blkctl_init(struct dcss_dev *dcss, unsigned long blkctl_base)
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{
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struct dcss_blkctl *blkctl;
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blkctl = devm_kzalloc(dcss->dev, sizeof(*blkctl), GFP_KERNEL);
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if (!blkctl)
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return -ENOMEM;
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blkctl->base_reg = devm_ioremap(dcss->dev, blkctl_base, SZ_4K);
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if (!blkctl->base_reg) {
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dev_err(dcss->dev, "unable to remap BLK CTRL base\n");
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return -ENOMEM;
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}
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dcss->blkctl = blkctl;
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blkctl->dcss = dcss;
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dcss_blkctl_cfg(blkctl);
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return 0;
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}
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