From cde9070d9970eef1f7ec2360586c802a16230ad8 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 07:43:50 +0000
Subject: [PATCH] rtl88x2CE_WiFi_linux driver
---
kernel/drivers/clk/sunxi-ng/ccu-sun8i-r40.c | 161 +++++++++++++++++++++++++++++++----------------------
1 files changed, 95 insertions(+), 66 deletions(-)
diff --git a/kernel/drivers/clk/sunxi-ng/ccu-sun8i-r40.c b/kernel/drivers/clk/sunxi-ng/ccu-sun8i-r40.c
index 0f388f6..8415341 100644
--- a/kernel/drivers/clk/sunxi-ng/ccu-sun8i-r40.c
+++ b/kernel/drivers/clk/sunxi-ng/ccu-sun8i-r40.c
@@ -1,17 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2017 Icenowy Zheng <icenowy@aosc.io>
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * 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.
*/
#include <linux/clk-provider.h>
+#include <linux/io.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
@@ -52,32 +45,43 @@
* the base (2x, 4x and 8x), and one variable divider (the one true
* pll audio).
*
- * We don't have any need for the variable divider for now, so we just
- * hardcode it to match with the clock names
+ * With sigma-delta modulation for fractional-N on the audio PLL,
+ * we have to use specific dividers. This means the variable divider
+ * can no longer be used, as the audio codec requests the exact clock
+ * rates we support through this mechanism. So we now hard code the
+ * variable divider to 1. This means the clock rates will no longer
+ * match the clock names.
*/
#define SUN8I_R40_PLL_AUDIO_REG 0x008
-static SUNXI_CCU_NM_WITH_GATE_LOCK(pll_audio_base_clk, "pll-audio-base",
- "osc24M", 0x008,
- 8, 7, /* N */
- 0, 5, /* M */
- BIT(31), /* gate */
- BIT(28), /* lock */
- CLK_SET_RATE_UNGATE);
+static struct ccu_sdm_setting pll_audio_sdm_table[] = {
+ { .rate = 22579200, .pattern = 0xc0010d84, .m = 8, .n = 7 },
+ { .rate = 24576000, .pattern = 0xc000ac02, .m = 14, .n = 14 },
+};
-/* TODO: The result of N/M is required to be in [8, 25] range. */
-static SUNXI_CCU_NM_WITH_FRAC_GATE_LOCK_MIN(pll_video0_clk, "pll-video0",
- "osc24M", 0x0010,
- 192000000, /* Minimum rate */
- 8, 7, /* N */
- 0, 4, /* M */
- BIT(24), /* frac enable */
- BIT(25), /* frac select */
- 270000000, /* frac rate 0 */
- 297000000, /* frac rate 1 */
- BIT(31), /* gate */
- BIT(28), /* lock */
- CLK_SET_RATE_UNGATE);
+static SUNXI_CCU_NM_WITH_SDM_GATE_LOCK(pll_audio_base_clk, "pll-audio-base",
+ "osc24M", 0x008,
+ 8, 7, /* N */
+ 0, 5, /* M */
+ pll_audio_sdm_table, BIT(24),
+ 0x284, BIT(31),
+ BIT(31), /* gate */
+ BIT(28), /* lock */
+ CLK_SET_RATE_UNGATE);
+
+static SUNXI_CCU_NM_WITH_FRAC_GATE_LOCK_MIN_MAX(pll_video0_clk, "pll-video0",
+ "osc24M", 0x0010,
+ 192000000, /* Minimum rate */
+ 1008000000, /* Maximum rate */
+ 8, 7, /* N */
+ 0, 4, /* M */
+ BIT(24), /* frac enable */
+ BIT(25), /* frac select */
+ 270000000, /* frac rate 0 */
+ 297000000, /* frac rate 1 */
+ BIT(31), /* gate */
+ BIT(28), /* lock */
+ CLK_SET_RATE_UNGATE);
/* TODO: The result of N/M is required to be in [8, 25] range. */
static SUNXI_CCU_NM_WITH_FRAC_GATE_LOCK(pll_ve_clk, "pll-ve",
@@ -152,19 +156,19 @@
},
};
-/* TODO: The result of N/M is required to be in [8, 25] range. */
-static SUNXI_CCU_NM_WITH_FRAC_GATE_LOCK_MIN(pll_video1_clk, "pll-video1",
- "osc24M", 0x030,
- 192000000, /* Minimum rate */
- 8, 7, /* N */
- 0, 4, /* M */
- BIT(24), /* frac enable */
- BIT(25), /* frac select */
- 270000000, /* frac rate 0 */
- 297000000, /* frac rate 1 */
- BIT(31), /* gate */
- BIT(28), /* lock */
- CLK_SET_RATE_UNGATE);
+static SUNXI_CCU_NM_WITH_FRAC_GATE_LOCK_MIN_MAX(pll_video1_clk, "pll-video1",
+ "osc24M", 0x030,
+ 192000000, /* Minimum rate */
+ 1008000000, /* Maximum rate */
+ 8, 7, /* N */
+ 0, 4, /* M */
+ BIT(24), /* frac enable */
+ BIT(25), /* frac select */
+ 270000000, /* frac rate 0 */
+ 297000000, /* frac rate 1 */
+ BIT(31), /* gate */
+ BIT(28), /* lock */
+ CLK_SET_RATE_UNGATE);
static struct ccu_nkm pll_sata_clk = {
.enable = BIT(31),
@@ -768,7 +772,8 @@
.reg = 0x1f0,
.features = CCU_FEATURE_FIXED_PREDIV,
.hw.init = CLK_HW_INIT_PARENTS("outa", out_parents,
- &ccu_mp_ops, 0),
+ &ccu_mp_ops,
+ CLK_SET_RATE_PARENT),
}
};
@@ -786,7 +791,8 @@
.reg = 0x1f4,
.features = CCU_FEATURE_FIXED_PREDIV,
.hw.init = CLK_HW_INIT_PARENTS("outb", out_parents,
- &ccu_mp_ops, 0),
+ &ccu_mp_ops,
+ CLK_SET_RATE_PARENT),
}
};
@@ -951,25 +957,37 @@
};
/* Fixed Factor clocks */
-static CLK_FIXED_FACTOR(osc12M_clk, "osc12M", "osc24M", 2, 1, 0);
+static CLK_FIXED_FACTOR_FW_NAME(osc12M_clk, "osc12M", "hosc", 2, 1, 0);
-/* We hardcode the divider to 4 for now */
-static CLK_FIXED_FACTOR(pll_audio_clk, "pll-audio",
- "pll-audio-base", 4, 1, CLK_SET_RATE_PARENT);
-static CLK_FIXED_FACTOR(pll_audio_2x_clk, "pll-audio-2x",
- "pll-audio-base", 2, 1, CLK_SET_RATE_PARENT);
-static CLK_FIXED_FACTOR(pll_audio_4x_clk, "pll-audio-4x",
- "pll-audio-base", 1, 1, CLK_SET_RATE_PARENT);
-static CLK_FIXED_FACTOR(pll_audio_8x_clk, "pll-audio-8x",
- "pll-audio-base", 1, 2, CLK_SET_RATE_PARENT);
-static CLK_FIXED_FACTOR(pll_periph0_2x_clk, "pll-periph0-2x",
- "pll-periph0", 1, 2, 0);
-static CLK_FIXED_FACTOR(pll_periph1_2x_clk, "pll-periph1-2x",
- "pll-periph1", 1, 2, 0);
-static CLK_FIXED_FACTOR(pll_video0_2x_clk, "pll-video0-2x",
- "pll-video0", 1, 2, 0);
-static CLK_FIXED_FACTOR(pll_video1_2x_clk, "pll-video1-2x",
- "pll-video1", 1, 2, 0);
+static const struct clk_hw *clk_parent_pll_audio[] = {
+ &pll_audio_base_clk.common.hw
+};
+
+/* We hardcode the divider to 1 for now */
+static CLK_FIXED_FACTOR_HWS(pll_audio_clk, "pll-audio",
+ clk_parent_pll_audio,
+ 1, 1, CLK_SET_RATE_PARENT);
+static CLK_FIXED_FACTOR_HWS(pll_audio_2x_clk, "pll-audio-2x",
+ clk_parent_pll_audio,
+ 2, 1, CLK_SET_RATE_PARENT);
+static CLK_FIXED_FACTOR_HWS(pll_audio_4x_clk, "pll-audio-4x",
+ clk_parent_pll_audio,
+ 1, 1, CLK_SET_RATE_PARENT);
+static CLK_FIXED_FACTOR_HWS(pll_audio_8x_clk, "pll-audio-8x",
+ clk_parent_pll_audio,
+ 1, 2, CLK_SET_RATE_PARENT);
+static CLK_FIXED_FACTOR_HW(pll_periph0_2x_clk, "pll-periph0-2x",
+ &pll_periph0_clk.common.hw,
+ 1, 2, 0);
+static CLK_FIXED_FACTOR_HW(pll_periph1_2x_clk, "pll-periph1-2x",
+ &pll_periph1_clk.common.hw,
+ 1, 2, 0);
+static CLK_FIXED_FACTOR_HW(pll_video0_2x_clk, "pll-video0-2x",
+ &pll_video0_clk.common.hw,
+ 1, 2, 0);
+static CLK_FIXED_FACTOR_HW(pll_video1_2x_clk, "pll-video1-2x",
+ &pll_video1_clk.common.hw,
+ 1, 2, 0);
static struct clk_hw_onecell_data sun8i_r40_hw_clks = {
.hws = {
@@ -1284,6 +1302,9 @@
.writeable_reg = sun8i_r40_ccu_regmap_accessible_reg,
};
+#define SUN8I_R40_SYS_32K_CLK_REG 0x310
+#define SUN8I_R40_SYS_32K_CLK_KEY (0x16AA << 16)
+
static int sun8i_r40_ccu_probe(struct platform_device *pdev)
{
struct resource *res;
@@ -1297,10 +1318,10 @@
if (IS_ERR(reg))
return PTR_ERR(reg);
- /* Force the PLL-Audio-1x divider to 4 */
+ /* Force the PLL-Audio-1x divider to 1 */
val = readl(reg + SUN8I_R40_PLL_AUDIO_REG);
val &= ~GENMASK(19, 16);
- writel(val | (3 << 16), reg + SUN8I_R40_PLL_AUDIO_REG);
+ writel(val | (0 << 16), reg + SUN8I_R40_PLL_AUDIO_REG);
/* Force PLL-MIPI to MIPI mode */
val = readl(reg + SUN8I_R40_PLL_MIPI_REG);
@@ -1312,6 +1333,14 @@
val &= ~GENMASK(25, 20);
writel(val, reg + SUN8I_R40_USB_CLK_REG);
+ /*
+ * Force SYS 32k (otherwise known as LOSC throughout the CCU)
+ * clock parent to LOSC output from RTC module instead of the
+ * CCU's internal RC oscillator divided output.
+ */
+ writel(SUN8I_R40_SYS_32K_CLK_KEY | BIT(8),
+ reg + SUN8I_R40_SYS_32K_CLK_REG);
+
regmap = devm_regmap_init_mmio(&pdev->dev, reg,
&sun8i_r40_ccu_regmap_config);
if (IS_ERR(regmap))
--
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