Adding upstream version 6.1.76.upstream/6.1.76upstream

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

1 files changed, 446 insertions, 0 deletions

diff --git a/drivers/clk/samsung/clk-s3c2410.c b/drivers/clk/samsung/clk-s3c2410.c
new file mode 100644
index 000000000..3d152a461
--- /dev/null
+++ b/drivers/clk/samsung/clk-s3c2410.c
@@ -0,0 +1,446 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2013 Heiko Stuebner <heiko@sntech.de>
+ *
+ * Common Clock Framework support for S3C2410 and following SoCs.
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/clk/samsung.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+
+#include <dt-bindings/clock/s3c2410.h>
+
+#include "clk.h"
+#include "clk-pll.h"
+
+#define LOCKTIME	0x00
+#define MPLLCON		0x04
+#define UPLLCON		0x08
+#define CLKCON		0x0c
+#define CLKSLOW		0x10
+#define CLKDIVN		0x14
+#define CAMDIVN		0x18
+
+/* the soc types */
+enum supported_socs {
+	S3C2410,
+	S3C2440,
+	S3C2442,
+};
+
+/* list of PLLs to be registered */
+enum s3c2410_plls {
+	mpll, upll,
+};
+
+static void __iomem *reg_base;
+
+/*
+ * list of controller registers to be saved and restored during a
+ * suspend/resume cycle.
+ */
+static unsigned long s3c2410_clk_regs[] __initdata = {
+	LOCKTIME,
+	MPLLCON,
+	UPLLCON,
+	CLKCON,
+	CLKSLOW,
+	CLKDIVN,
+	CAMDIVN,
+};
+
+PNAME(fclk_p) = { "mpll", "div_slow" };
+
+static struct samsung_mux_clock s3c2410_common_muxes[] __initdata = {
+	MUX(FCLK, "fclk", fclk_p, CLKSLOW, 4, 1),
+};
+
+static struct clk_div_table divslow_d[] = {
+	{ .val = 0, .div = 1 },
+	{ .val = 1, .div = 2 },
+	{ .val = 2, .div = 4 },
+	{ .val = 3, .div = 6 },
+	{ .val = 4, .div = 8 },
+	{ .val = 5, .div = 10 },
+	{ .val = 6, .div = 12 },
+	{ .val = 7, .div = 14 },
+	{ /* sentinel */ },
+};
+
+static struct samsung_div_clock s3c2410_common_dividers[] __initdata = {
+	DIV_T(0, "div_slow", "xti", CLKSLOW, 0, 3, divslow_d),
+	DIV(PCLK, "pclk", "hclk", CLKDIVN, 0, 1),
+};
+
+static struct samsung_gate_clock s3c2410_common_gates[] __initdata = {
+	GATE(PCLK_SPI, "spi", "pclk", CLKCON, 18, 0, 0),
+	GATE(PCLK_I2S, "i2s", "pclk", CLKCON, 17, 0, 0),
+	GATE(PCLK_I2C, "i2c", "pclk", CLKCON, 16, 0, 0),
+	GATE(PCLK_ADC, "adc", "pclk", CLKCON, 15, 0, 0),
+	GATE(PCLK_RTC, "rtc", "pclk", CLKCON, 14, 0, 0),
+	GATE(PCLK_GPIO, "gpio", "pclk", CLKCON, 13, CLK_IGNORE_UNUSED, 0),
+	GATE(PCLK_UART2, "uart2", "pclk", CLKCON, 12, 0, 0),
+	GATE(PCLK_UART1, "uart1", "pclk", CLKCON, 11, 0, 0),
+	GATE(PCLK_UART0, "uart0", "pclk", CLKCON, 10, 0, 0),
+	GATE(PCLK_SDI, "sdi", "pclk", CLKCON, 9, 0, 0),
+	GATE(PCLK_PWM, "pwm", "pclk", CLKCON, 8, 0, 0),
+	GATE(HCLK_USBD, "usb-device", "hclk", CLKCON, 7, 0, 0),
+	GATE(HCLK_USBH, "usb-host", "hclk", CLKCON, 6, 0, 0),
+	GATE(HCLK_LCD, "lcd", "hclk", CLKCON, 5, 0, 0),
+	GATE(HCLK_NAND, "nand", "hclk", CLKCON, 4, 0, 0),
+};
+
+/* should be added _after_ the soc-specific clocks are created */
+static struct samsung_clock_alias s3c2410_common_aliases[] __initdata = {
+	ALIAS(PCLK_I2C, "s3c2410-i2c.0", "i2c"),
+	ALIAS(PCLK_ADC, NULL, "adc"),
+	ALIAS(PCLK_RTC, NULL, "rtc"),
+	ALIAS(PCLK_PWM, NULL, "timers"),
+	ALIAS(HCLK_LCD, NULL, "lcd"),
+	ALIAS(HCLK_USBD, NULL, "usb-device"),
+	ALIAS(HCLK_USBH, NULL, "usb-host"),
+	ALIAS(UCLK, NULL, "usb-bus-host"),
+	ALIAS(UCLK, NULL, "usb-bus-gadget"),
+	ALIAS(ARMCLK, NULL, "armclk"),
+	ALIAS(UCLK, NULL, "uclk"),
+	ALIAS(HCLK, NULL, "hclk"),
+	ALIAS(MPLL, NULL, "mpll"),
+	ALIAS(FCLK, NULL, "fclk"),
+	ALIAS(PCLK, NULL, "watchdog"),
+	ALIAS(PCLK_SDI, NULL, "sdi"),
+	ALIAS(HCLK_NAND, NULL, "nand"),
+	ALIAS(PCLK_I2S, NULL, "iis"),
+	ALIAS(PCLK_I2C, NULL, "i2c"),
+};
+
+/* S3C2410 specific clocks */
+
+static struct samsung_pll_rate_table pll_s3c2410_12mhz_tbl[] __initdata = {
+	/* sorted in descending order */
+	/* 2410A extras */
+	PLL_S3C2410_MPLL_RATE(12 * MHZ, 270000000, 127, 1, 1),
+	PLL_S3C2410_MPLL_RATE(12 * MHZ, 268000000, 126, 1, 1),
+	PLL_S3C2410_MPLL_RATE(12 * MHZ, 266000000, 125, 1, 1),
+	PLL_S3C2410_MPLL_RATE(12 * MHZ, 226000000, 105, 1, 1),
+	PLL_S3C2410_MPLL_RATE(12 * MHZ, 210000000, 132, 2, 1),
+	/* 2410 common */
+	PLL_S3C2410_MPLL_RATE(12 * MHZ, 202800000, 161, 3, 1),
+	PLL_S3C2410_MPLL_RATE(12 * MHZ, 192000000, 88, 1, 1),
+	PLL_S3C2410_MPLL_RATE(12 * MHZ, 186000000, 85, 1, 1),
+	PLL_S3C2410_MPLL_RATE(12 * MHZ, 180000000, 82, 1, 1),
+	PLL_S3C2410_MPLL_RATE(12 * MHZ, 170000000, 77, 1, 1),
+	PLL_S3C2410_MPLL_RATE(12 * MHZ, 158000000, 71, 1, 1),
+	PLL_S3C2410_MPLL_RATE(12 * MHZ, 152000000, 68, 1, 1),
+	PLL_S3C2410_MPLL_RATE(12 * MHZ, 147000000, 90, 2, 1),
+	PLL_S3C2410_MPLL_RATE(12 * MHZ, 135000000, 82, 2, 1),
+	PLL_S3C2410_MPLL_RATE(12 * MHZ, 124000000, 116, 1, 2),
+	PLL_S3C2410_MPLL_RATE(12 * MHZ, 118500000, 150, 2, 2),
+	PLL_S3C2410_MPLL_RATE(12 * MHZ, 113000000, 105, 1, 2),
+	PLL_S3C2410_MPLL_RATE(12 * MHZ, 101250000, 127, 2, 2),
+	PLL_S3C2410_MPLL_RATE(12 * MHZ, 90000000, 112, 2, 2),
+	PLL_S3C2410_MPLL_RATE(12 * MHZ, 84750000, 105, 2, 2),
+	PLL_S3C2410_MPLL_RATE(12 * MHZ, 79000000, 71, 1, 2),
+	PLL_S3C2410_MPLL_RATE(12 * MHZ, 67500000, 82, 2, 2),
+	PLL_S3C2410_MPLL_RATE(12 * MHZ, 56250000, 142, 2, 3),
+	PLL_S3C2410_MPLL_RATE(12 * MHZ, 48000000, 120, 2, 3),
+	PLL_S3C2410_MPLL_RATE(12 * MHZ, 50700000, 161, 3, 3),
+	PLL_S3C2410_MPLL_RATE(12 * MHZ, 45000000, 82, 1, 3),
+	PLL_S3C2410_MPLL_RATE(12 * MHZ, 33750000, 82, 2, 3),
+	{ /* sentinel */ },
+};
+
+static struct samsung_pll_clock s3c2410_plls[] __initdata = {
+	[mpll] = PLL(pll_s3c2410_mpll, MPLL, "mpll", "xti",
+						LOCKTIME, MPLLCON, NULL),
+	[upll] = PLL(pll_s3c2410_upll, UPLL, "upll", "xti",
+						LOCKTIME, UPLLCON, NULL),
+};
+
+static struct samsung_div_clock s3c2410_dividers[] __initdata = {
+	DIV(HCLK, "hclk", "mpll", CLKDIVN, 1, 1),
+};
+
+static struct samsung_fixed_factor_clock s3c2410_ffactor[] __initdata = {
+	/*
+	 * armclk is directly supplied by the fclk, without
+	 * switching possibility like on the s3c244x below.
+	 */
+	FFACTOR(ARMCLK, "armclk", "fclk", 1, 1, 0),
+
+	/* uclk is fed from the unmodified upll */
+	FFACTOR(UCLK, "uclk", "upll", 1, 1, 0),
+};
+
+static struct samsung_clock_alias s3c2410_aliases[] __initdata = {
+	ALIAS(PCLK_UART0, "s3c2410-uart.0", "uart"),
+	ALIAS(PCLK_UART1, "s3c2410-uart.1", "uart"),
+	ALIAS(PCLK_UART2, "s3c2410-uart.2", "uart"),
+	ALIAS(PCLK_UART0, "s3c2410-uart.0", "clk_uart_baud0"),
+	ALIAS(PCLK_UART1, "s3c2410-uart.1", "clk_uart_baud0"),
+	ALIAS(PCLK_UART2, "s3c2410-uart.2", "clk_uart_baud0"),
+	ALIAS(UCLK, NULL, "clk_uart_baud1"),
+};
+
+/* S3C244x specific clocks */
+
+static struct samsung_pll_rate_table pll_s3c244x_12mhz_tbl[] __initdata = {
+	/* sorted in descending order */
+	PLL_S3C2440_MPLL_RATE(12 * MHZ, 400000000, 0x5c, 1, 1),
+	PLL_S3C2440_MPLL_RATE(12 * MHZ, 390000000, 0x7a, 2, 1),
+	PLL_S3C2440_MPLL_RATE(12 * MHZ, 380000000, 0x57, 1, 1),
+	PLL_S3C2440_MPLL_RATE(12 * MHZ, 370000000, 0xb1, 4, 1),
+	PLL_S3C2440_MPLL_RATE(12 * MHZ, 360000000, 0x70, 2, 1),
+	PLL_S3C2440_MPLL_RATE(12 * MHZ, 350000000, 0xa7, 4, 1),
+	PLL_S3C2440_MPLL_RATE(12 * MHZ, 340000000, 0x4d, 1, 1),
+	PLL_S3C2440_MPLL_RATE(12 * MHZ, 330000000, 0x66, 2, 1),
+	PLL_S3C2440_MPLL_RATE(12 * MHZ, 320000000, 0x98, 4, 1),
+	PLL_S3C2440_MPLL_RATE(12 * MHZ, 310000000, 0x93, 4, 1),
+	PLL_S3C2440_MPLL_RATE(12 * MHZ, 300000000, 0x75, 3, 1),
+	PLL_S3C2440_MPLL_RATE(12 * MHZ, 240000000, 0x70, 1, 2),
+	PLL_S3C2440_MPLL_RATE(12 * MHZ, 230000000, 0x6b, 1, 2),
+	PLL_S3C2440_MPLL_RATE(12 * MHZ, 220000000, 0x66, 1, 2),
+	PLL_S3C2440_MPLL_RATE(12 * MHZ, 210000000, 0x84, 2, 2),
+	PLL_S3C2440_MPLL_RATE(12 * MHZ, 200000000, 0x5c, 1, 2),
+	PLL_S3C2440_MPLL_RATE(12 * MHZ, 190000000, 0x57, 1, 2),
+	PLL_S3C2440_MPLL_RATE(12 * MHZ, 180000000, 0x70, 2, 2),
+	PLL_S3C2440_MPLL_RATE(12 * MHZ, 170000000, 0x4d, 1, 2),
+	PLL_S3C2440_MPLL_RATE(12 * MHZ, 160000000, 0x98, 4, 2),
+	PLL_S3C2440_MPLL_RATE(12 * MHZ, 150000000, 0x75, 3, 2),
+	PLL_S3C2440_MPLL_RATE(12 * MHZ, 120000000, 0x70, 1, 3),
+	PLL_S3C2440_MPLL_RATE(12 * MHZ, 110000000, 0x66, 1, 3),
+	PLL_S3C2440_MPLL_RATE(12 * MHZ, 100000000, 0x5c, 1, 3),
+	PLL_S3C2440_MPLL_RATE(12 * MHZ, 90000000, 0x70, 2, 3),
+	PLL_S3C2440_MPLL_RATE(12 * MHZ, 80000000, 0x98, 4, 3),
+	PLL_S3C2440_MPLL_RATE(12 * MHZ, 75000000, 0x75, 3, 3),
+	{ /* sentinel */ },
+};
+
+static struct samsung_pll_clock s3c244x_common_plls[] __initdata = {
+	[mpll] = PLL(pll_s3c2440_mpll, MPLL, "mpll", "xti",
+						LOCKTIME, MPLLCON, NULL),
+	[upll] = PLL(pll_s3c2410_upll, UPLL, "upll", "xti",
+						LOCKTIME, UPLLCON, NULL),
+};
+
+PNAME(hclk_p) = { "fclk", "div_hclk_2", "div_hclk_4", "div_hclk_3" };
+PNAME(armclk_p) = { "fclk", "hclk" };
+
+static struct samsung_mux_clock s3c244x_common_muxes[] __initdata = {
+	MUX(HCLK, "hclk", hclk_p, CLKDIVN, 1, 2),
+	MUX(ARMCLK, "armclk", armclk_p, CAMDIVN, 12, 1),
+};
+
+static struct samsung_fixed_factor_clock s3c244x_common_ffactor[] __initdata = {
+	FFACTOR(0, "div_hclk_2", "fclk", 1, 2, 0),
+	FFACTOR(0, "ff_cam", "div_cam", 2, 1, CLK_SET_RATE_PARENT),
+};
+
+static struct clk_div_table div_hclk_4_d[] = {
+	{ .val = 0, .div = 4 },
+	{ .val = 1, .div = 8 },
+	{ /* sentinel */ },
+};
+
+static struct clk_div_table div_hclk_3_d[] = {
+	{ .val = 0, .div = 3 },
+	{ .val = 1, .div = 6 },
+	{ /* sentinel */ },
+};
+
+static struct samsung_div_clock s3c244x_common_dividers[] __initdata = {
+	DIV(UCLK, "uclk", "upll", CLKDIVN, 3, 1),
+	DIV(0, "div_hclk", "fclk", CLKDIVN, 1, 1),
+	DIV_T(0, "div_hclk_4", "fclk", CAMDIVN, 9, 1, div_hclk_4_d),
+	DIV_T(0, "div_hclk_3", "fclk", CAMDIVN, 8, 1, div_hclk_3_d),
+	DIV(0, "div_cam", "upll", CAMDIVN, 0, 3),
+};
+
+static struct samsung_gate_clock s3c244x_common_gates[] __initdata = {
+	GATE(HCLK_CAM, "cam", "hclk", CLKCON, 19, 0, 0),
+};
+
+static struct samsung_clock_alias s3c244x_common_aliases[] __initdata = {
+	ALIAS(PCLK_UART0, "s3c2440-uart.0", "uart"),
+	ALIAS(PCLK_UART1, "s3c2440-uart.1", "uart"),
+	ALIAS(PCLK_UART2, "s3c2440-uart.2", "uart"),
+	ALIAS(PCLK_UART0, "s3c2440-uart.0", "clk_uart_baud2"),
+	ALIAS(PCLK_UART1, "s3c2440-uart.1", "clk_uart_baud2"),
+	ALIAS(PCLK_UART2, "s3c2440-uart.2", "clk_uart_baud2"),
+	ALIAS(HCLK_CAM, NULL, "camif"),
+	ALIAS(CAMIF, NULL, "camif-upll"),
+};
+
+/* S3C2440 specific clocks */
+
+PNAME(s3c2440_camif_p) = { "upll", "ff_cam" };
+
+static struct samsung_mux_clock s3c2440_muxes[] __initdata = {
+	MUX(CAMIF, "camif", s3c2440_camif_p, CAMDIVN, 4, 1),
+};
+
+static struct samsung_gate_clock s3c2440_gates[] __initdata = {
+	GATE(PCLK_AC97, "ac97", "pclk", CLKCON, 20, 0, 0),
+};
+
+/* S3C2442 specific clocks */
+
+static struct samsung_fixed_factor_clock s3c2442_ffactor[] __initdata = {
+	FFACTOR(0, "upll_3", "upll", 1, 3, 0),
+};
+
+PNAME(s3c2442_camif_p) = { "upll", "ff_cam", "upll", "upll_3" };
+
+static struct samsung_mux_clock s3c2442_muxes[] __initdata = {
+	MUX(CAMIF, "camif", s3c2442_camif_p, CAMDIVN, 4, 2),
+};
+
+/*
+ * fixed rate clocks generated outside the soc
+ * Only necessary until the devicetree-move is complete
+ */
+#define XTI	1
+static struct samsung_fixed_rate_clock s3c2410_common_frate_clks[] __initdata = {
+	FRATE(XTI, "xti", NULL, 0, 0),
+};
+
+static void __init s3c2410_common_clk_register_fixed_ext(
+		struct samsung_clk_provider *ctx,
+		unsigned long xti_f)
+{
+	struct samsung_clock_alias xti_alias = ALIAS(XTI, NULL, "xtal");
+
+	s3c2410_common_frate_clks[0].fixed_rate = xti_f;
+	samsung_clk_register_fixed_rate(ctx, s3c2410_common_frate_clks,
+				ARRAY_SIZE(s3c2410_common_frate_clks));
+
+	samsung_clk_register_alias(ctx, &xti_alias, 1);
+}
+
+void __init s3c2410_common_clk_init(struct device_node *np, unsigned long xti_f,
+				    int current_soc,
+				    void __iomem *base)
+{
+	struct samsung_clk_provider *ctx;
+	struct clk_hw **hws;
+	reg_base = base;
+
+	if (np) {
+		reg_base = of_iomap(np, 0);
+		if (!reg_base)
+			panic("%s: failed to map registers\n", __func__);
+	}
+
+	ctx = samsung_clk_init(np, reg_base, NR_CLKS);
+	hws = ctx->clk_data.hws;
+
+	/* Register external clocks only in non-dt cases */
+	if (!np)
+		s3c2410_common_clk_register_fixed_ext(ctx, xti_f);
+
+	if (current_soc == S3C2410) {
+		if (clk_hw_get_rate(hws[XTI]) == 12 * MHZ) {
+			s3c2410_plls[mpll].rate_table = pll_s3c2410_12mhz_tbl;
+			s3c2410_plls[upll].rate_table = pll_s3c2410_12mhz_tbl;
+		}
+
+		/* Register PLLs. */
+		samsung_clk_register_pll(ctx, s3c2410_plls,
+				ARRAY_SIZE(s3c2410_plls), reg_base);
+
+	} else { /* S3C2440, S3C2442 */
+		if (clk_hw_get_rate(hws[XTI]) == 12 * MHZ) {
+			/*
+			 * plls follow different calculation schemes, with the
+			 * upll following the same scheme as the s3c2410 plls
+			 */
+			s3c244x_common_plls[mpll].rate_table =
+							pll_s3c244x_12mhz_tbl;
+			s3c244x_common_plls[upll].rate_table =
+							pll_s3c2410_12mhz_tbl;
+		}
+
+		/* Register PLLs. */
+		samsung_clk_register_pll(ctx, s3c244x_common_plls,
+				ARRAY_SIZE(s3c244x_common_plls), reg_base);
+	}
+
+	/* Register common internal clocks. */
+	samsung_clk_register_mux(ctx, s3c2410_common_muxes,
+			ARRAY_SIZE(s3c2410_common_muxes));
+	samsung_clk_register_div(ctx, s3c2410_common_dividers,
+			ARRAY_SIZE(s3c2410_common_dividers));
+	samsung_clk_register_gate(ctx, s3c2410_common_gates,
+		ARRAY_SIZE(s3c2410_common_gates));
+
+	if (current_soc == S3C2440 || current_soc == S3C2442) {
+		samsung_clk_register_div(ctx, s3c244x_common_dividers,
+				ARRAY_SIZE(s3c244x_common_dividers));
+		samsung_clk_register_gate(ctx, s3c244x_common_gates,
+				ARRAY_SIZE(s3c244x_common_gates));
+		samsung_clk_register_mux(ctx, s3c244x_common_muxes,
+				ARRAY_SIZE(s3c244x_common_muxes));
+		samsung_clk_register_fixed_factor(ctx, s3c244x_common_ffactor,
+				ARRAY_SIZE(s3c244x_common_ffactor));
+	}
+
+	/* Register SoC-specific clocks. */
+	switch (current_soc) {
+	case S3C2410:
+		samsung_clk_register_div(ctx, s3c2410_dividers,
+				ARRAY_SIZE(s3c2410_dividers));
+		samsung_clk_register_fixed_factor(ctx, s3c2410_ffactor,
+				ARRAY_SIZE(s3c2410_ffactor));
+		samsung_clk_register_alias(ctx, s3c2410_aliases,
+			ARRAY_SIZE(s3c2410_aliases));
+		break;
+	case S3C2440:
+		samsung_clk_register_mux(ctx, s3c2440_muxes,
+				ARRAY_SIZE(s3c2440_muxes));
+		samsung_clk_register_gate(ctx, s3c2440_gates,
+				ARRAY_SIZE(s3c2440_gates));
+		break;
+	case S3C2442:
+		samsung_clk_register_mux(ctx, s3c2442_muxes,
+				ARRAY_SIZE(s3c2442_muxes));
+		samsung_clk_register_fixed_factor(ctx, s3c2442_ffactor,
+				ARRAY_SIZE(s3c2442_ffactor));
+		break;
+	}
+
+	/*
+	 * Register common aliases at the end, as some of the aliased clocks
+	 * are SoC specific.
+	 */
+	samsung_clk_register_alias(ctx, s3c2410_common_aliases,
+		ARRAY_SIZE(s3c2410_common_aliases));
+
+	if (current_soc == S3C2440 || current_soc == S3C2442) {
+		samsung_clk_register_alias(ctx, s3c244x_common_aliases,
+			ARRAY_SIZE(s3c244x_common_aliases));
+	}
+
+	samsung_clk_sleep_init(reg_base, s3c2410_clk_regs,
+			       ARRAY_SIZE(s3c2410_clk_regs));
+
+	samsung_clk_of_add_provider(np, ctx);
+}
+
+static void __init s3c2410_clk_init(struct device_node *np)
+{
+	s3c2410_common_clk_init(np, 0, S3C2410, NULL);
+}
+CLK_OF_DECLARE(s3c2410_clk, "samsung,s3c2410-clock", s3c2410_clk_init);
+
+static void __init s3c2440_clk_init(struct device_node *np)
+{
+	s3c2410_common_clk_init(np, 0, S3C2440, NULL);
+}
+CLK_OF_DECLARE(s3c2440_clk, "samsung,s3c2440-clock", s3c2440_clk_init);
+
+static void __init s3c2442_clk_init(struct device_node *np)
+{
+	s3c2410_common_clk_init(np, 0, S3C2442, NULL);
+}
+CLK_OF_DECLARE(s3c2442_clk, "samsung,s3c2442-clock", s3c2442_clk_init);