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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
commitace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch)
treeb2d64bc10158fdd5497876388cd68142ca374ed3 /drivers/clk/qcom/kpss-xcc.c
parentInitial commit. (diff)
downloadlinux-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/clk/qcom/kpss-xcc.c')
-rw-r--r--drivers/clk/qcom/kpss-xcc.c82
1 files changed, 82 insertions, 0 deletions
diff --git a/drivers/clk/qcom/kpss-xcc.c b/drivers/clk/qcom/kpss-xcc.c
new file mode 100644
index 0000000000..97358c98c6
--- /dev/null
+++ b/drivers/clk/qcom/kpss-xcc.c
@@ -0,0 +1,82 @@
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (c) 2018, The Linux Foundation. All rights reserved.
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/clk.h>
+#include <linux/clk-provider.h>
+
+static const struct clk_parent_data aux_parents[] = {
+ { .fw_name = "pll8_vote", .name = "pll8_vote" },
+ { .fw_name = "pxo", .name = "pxo_board" },
+};
+
+static const u32 aux_parent_map[] = {
+ 3,
+ 0,
+};
+
+static const struct of_device_id kpss_xcc_match_table[] = {
+ { .compatible = "qcom,kpss-acc-v1", .data = (void *)1UL },
+ { .compatible = "qcom,kpss-gcc" },
+ {}
+};
+MODULE_DEVICE_TABLE(of, kpss_xcc_match_table);
+
+static int kpss_xcc_driver_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ const struct of_device_id *id;
+ void __iomem *base;
+ struct clk_hw *hw;
+ const char *name;
+
+ id = of_match_device(kpss_xcc_match_table, dev);
+ if (!id)
+ return -ENODEV;
+
+ base = devm_platform_ioremap_resource(pdev, 0);
+ if (IS_ERR(base))
+ return PTR_ERR(base);
+
+ if (id->data) {
+ if (of_property_read_string_index(dev->of_node,
+ "clock-output-names",
+ 0, &name))
+ return -ENODEV;
+ base += 0x14;
+ } else {
+ name = "acpu_l2_aux";
+ base += 0x28;
+ }
+
+ hw = devm_clk_hw_register_mux_parent_data_table(dev, name, aux_parents,
+ ARRAY_SIZE(aux_parents), 0,
+ base, 0, 0x3,
+ 0, aux_parent_map, NULL);
+ if (IS_ERR(hw))
+ return PTR_ERR(hw);
+
+ of_clk_add_hw_provider(dev->of_node, of_clk_hw_simple_get, hw);
+
+ return 0;
+}
+
+static struct platform_driver kpss_xcc_driver = {
+ .probe = kpss_xcc_driver_probe,
+ .driver = {
+ .name = "kpss-xcc",
+ .of_match_table = kpss_xcc_match_table,
+ },
+};
+module_platform_driver(kpss_xcc_driver);
+
+MODULE_DESCRIPTION("Krait Processor Sub System (KPSS) Clock Driver");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:kpss-xcc");