2bb98fc1d4
dcss currently allocates and ioremaps quite a few resources in its probe function's call graph. Devres now provides convenient functions which perform the same task but do the cleanup automatically. Port all memory allocations and ioremap() calls to the devres counterparts. Signed-off-by: Philipp Stanner <pstanner@redhat.com> Reviewed-by: Laurentiu Palcu <laurentiu.palcu@oss.nxp.com> Signed-off-by: Laurentiu Palcu <laurentiu.palcu@oss.nxp.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240124111904.18261-4-pstanner@redhat.com
61 lines
1.4 KiB
C
61 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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