Adding upstream version 4.19.249.upstream/4.19.249upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 215 insertions, 0 deletions

diff --git a/drivers/clk/hisilicon/clk-hi3519.c b/drivers/clk/hisilicon/clk-hi3519.c
new file mode 100644
index 000000000..51b173ef1
--- /dev/null
+++ b/drivers/clk/hisilicon/clk-hi3519.c
@@ -0,0 +1,215 @@
+/*
+ * Hi3519 Clock Driver
+ *
+ * Copyright (c) 2015-2016 HiSilicon Technologies Co., Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <dt-bindings/clock/hi3519-clock.h>
+#include <linux/clk-provider.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include "clk.h"
+#include "reset.h"
+
+#define HI3519_INNER_CLK_OFFSET	64
+#define HI3519_FIXED_24M	65
+#define HI3519_FIXED_50M	66
+#define HI3519_FIXED_75M	67
+#define HI3519_FIXED_125M	68
+#define HI3519_FIXED_150M	69
+#define HI3519_FIXED_200M	70
+#define HI3519_FIXED_250M	71
+#define HI3519_FIXED_300M	72
+#define HI3519_FIXED_400M	73
+#define HI3519_FMC_MUX		74
+
+#define HI3519_NR_CLKS		128
+
+struct hi3519_crg_data {
+	struct hisi_clock_data *clk_data;
+	struct hisi_reset_controller *rstc;
+};
+
+static const struct hisi_fixed_rate_clock hi3519_fixed_rate_clks[] = {
+	{ HI3519_FIXED_24M, "24m", NULL, 0, 24000000, },
+	{ HI3519_FIXED_50M, "50m", NULL, 0, 50000000, },
+	{ HI3519_FIXED_75M, "75m", NULL, 0, 75000000, },
+	{ HI3519_FIXED_125M, "125m", NULL, 0, 125000000, },
+	{ HI3519_FIXED_150M, "150m", NULL, 0, 150000000, },
+	{ HI3519_FIXED_200M, "200m", NULL, 0, 200000000, },
+	{ HI3519_FIXED_250M, "250m", NULL, 0, 250000000, },
+	{ HI3519_FIXED_300M, "300m", NULL, 0, 300000000, },
+	{ HI3519_FIXED_400M, "400m", NULL, 0, 400000000, },
+};
+
+static const char *const fmc_mux_p[] = {
+		"24m", "75m", "125m", "150m", "200m", "250m", "300m", "400m", };
+static u32 fmc_mux_table[] = {0, 1, 2, 3, 4, 5, 6, 7};
+
+static const struct hisi_mux_clock hi3519_mux_clks[] = {
+	{ HI3519_FMC_MUX, "fmc_mux", fmc_mux_p, ARRAY_SIZE(fmc_mux_p),
+		CLK_SET_RATE_PARENT, 0xc0, 2, 3, 0, fmc_mux_table, },
+};
+
+static const struct hisi_gate_clock hi3519_gate_clks[] = {
+	{ HI3519_FMC_CLK, "clk_fmc", "fmc_mux",
+		CLK_SET_RATE_PARENT, 0xc0, 1, 0, },
+	{ HI3519_UART0_CLK, "clk_uart0", "24m",
+		CLK_SET_RATE_PARENT, 0xe4, 20, 0, },
+	{ HI3519_UART1_CLK, "clk_uart1", "24m",
+		CLK_SET_RATE_PARENT, 0xe4, 21, 0, },
+	{ HI3519_UART2_CLK, "clk_uart2", "24m",
+		CLK_SET_RATE_PARENT, 0xe4, 22, 0, },
+	{ HI3519_UART3_CLK, "clk_uart3", "24m",
+		CLK_SET_RATE_PARENT, 0xe4, 23, 0, },
+	{ HI3519_UART4_CLK, "clk_uart4", "24m",
+		CLK_SET_RATE_PARENT, 0xe4, 24, 0, },
+	{ HI3519_SPI0_CLK, "clk_spi0", "50m",
+		CLK_SET_RATE_PARENT, 0xe4, 16, 0, },
+	{ HI3519_SPI1_CLK, "clk_spi1", "50m",
+		CLK_SET_RATE_PARENT, 0xe4, 17, 0, },
+	{ HI3519_SPI2_CLK, "clk_spi2", "50m",
+		CLK_SET_RATE_PARENT, 0xe4, 18, 0, },
+};
+
+static struct hisi_clock_data *hi3519_clk_register(struct platform_device *pdev)
+{
+	struct hisi_clock_data *clk_data;
+	int ret;
+
+	clk_data = hisi_clk_alloc(pdev, HI3519_NR_CLKS);
+	if (!clk_data)
+		return ERR_PTR(-ENOMEM);
+
+	ret = hisi_clk_register_fixed_rate(hi3519_fixed_rate_clks,
+				     ARRAY_SIZE(hi3519_fixed_rate_clks),
+				     clk_data);
+	if (ret)
+		return ERR_PTR(ret);
+
+	ret = hisi_clk_register_mux(hi3519_mux_clks,
+				ARRAY_SIZE(hi3519_mux_clks),
+				clk_data);
+	if (ret)
+		goto unregister_fixed_rate;
+
+	ret = hisi_clk_register_gate(hi3519_gate_clks,
+				ARRAY_SIZE(hi3519_gate_clks),
+				clk_data);
+	if (ret)
+		goto unregister_mux;
+
+	ret = of_clk_add_provider(pdev->dev.of_node,
+			of_clk_src_onecell_get, &clk_data->clk_data);
+	if (ret)
+		goto unregister_gate;
+
+	return clk_data;
+
+unregister_fixed_rate:
+	hisi_clk_unregister_fixed_rate(hi3519_fixed_rate_clks,
+				ARRAY_SIZE(hi3519_fixed_rate_clks),
+				clk_data);
+
+unregister_mux:
+	hisi_clk_unregister_mux(hi3519_mux_clks,
+				ARRAY_SIZE(hi3519_mux_clks),
+				clk_data);
+unregister_gate:
+	hisi_clk_unregister_gate(hi3519_gate_clks,
+				ARRAY_SIZE(hi3519_gate_clks),
+				clk_data);
+	return ERR_PTR(ret);
+}
+
+static void hi3519_clk_unregister(struct platform_device *pdev)
+{
+	struct hi3519_crg_data *crg = platform_get_drvdata(pdev);
+
+	of_clk_del_provider(pdev->dev.of_node);
+
+	hisi_clk_unregister_gate(hi3519_gate_clks,
+				ARRAY_SIZE(hi3519_mux_clks),
+				crg->clk_data);
+	hisi_clk_unregister_mux(hi3519_mux_clks,
+				ARRAY_SIZE(hi3519_mux_clks),
+				crg->clk_data);
+	hisi_clk_unregister_fixed_rate(hi3519_fixed_rate_clks,
+				ARRAY_SIZE(hi3519_fixed_rate_clks),
+				crg->clk_data);
+}
+
+static int hi3519_clk_probe(struct platform_device *pdev)
+{
+	struct hi3519_crg_data *crg;
+
+	crg = devm_kmalloc(&pdev->dev, sizeof(*crg), GFP_KERNEL);
+	if (!crg)
+		return -ENOMEM;
+
+	crg->rstc = hisi_reset_init(pdev);
+	if (!crg->rstc)
+		return -ENOMEM;
+
+	crg->clk_data = hi3519_clk_register(pdev);
+	if (IS_ERR(crg->clk_data)) {
+		hisi_reset_exit(crg->rstc);
+		return PTR_ERR(crg->clk_data);
+	}
+
+	platform_set_drvdata(pdev, crg);
+	return 0;
+}
+
+static int hi3519_clk_remove(struct platform_device *pdev)
+{
+	struct hi3519_crg_data *crg = platform_get_drvdata(pdev);
+
+	hisi_reset_exit(crg->rstc);
+	hi3519_clk_unregister(pdev);
+	return 0;
+}
+
+
+static const struct of_device_id hi3519_clk_match_table[] = {
+	{ .compatible = "hisilicon,hi3519-crg" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, hi3519_clk_match_table);
+
+static struct platform_driver hi3519_clk_driver = {
+	.probe          = hi3519_clk_probe,
+	.remove		= hi3519_clk_remove,
+	.driver         = {
+		.name   = "hi3519-clk",
+		.of_match_table = hi3519_clk_match_table,
+	},
+};
+
+static int __init hi3519_clk_init(void)
+{
+	return platform_driver_register(&hi3519_clk_driver);
+}
+core_initcall(hi3519_clk_init);
+
+static void __exit hi3519_clk_exit(void)
+{
+	platform_driver_unregister(&hi3519_clk_driver);
+}
+module_exit(hi3519_clk_exit);
+
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("HiSilicon Hi3519 Clock Driver");