From 61598093bbdd283a7edc367d900f223070ead8d2 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 07:43:03 +0000
Subject: [PATCH] add ax88772C AX88772C_eeprom_tools
---
kernel/drivers/clk/mediatek/clk-pll.c | 51 +++++++++++++++++++++++----------------------------
1 files changed, 23 insertions(+), 28 deletions(-)
diff --git a/kernel/drivers/clk/mediatek/clk-pll.c b/kernel/drivers/clk/mediatek/clk-pll.c
index 18842d6..f440f2c 100644
--- a/kernel/drivers/clk/mediatek/clk-pll.c
+++ b/kernel/drivers/clk/mediatek/clk-pll.c
@@ -1,15 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2014 MediaTek Inc.
* Author: James Liao <jamesjj.liao@mediatek.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * 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/of.h>
@@ -27,11 +19,13 @@
#define CON0_BASE_EN BIT(0)
#define CON0_PWR_ON BIT(0)
#define CON0_ISO_EN BIT(1)
-#define CON0_PCW_CHG BIT(31)
+#define PCW_CHG_MASK BIT(31)
#define AUDPLL_TUNER_EN BIT(31)
#define POSTDIV_MASK 0x7
+
+/* default 7 bits integer, can be overridden with pcwibits. */
#define INTEGER_BITS 7
/*
@@ -49,6 +43,7 @@
void __iomem *tuner_addr;
void __iomem *tuner_en_addr;
void __iomem *pcw_addr;
+ void __iomem *pcw_chg_addr;
const struct mtk_pll_data *data;
};
@@ -68,12 +63,15 @@
u32 pcw, int postdiv)
{
int pcwbits = pll->data->pcwbits;
- int pcwfbits;
+ int pcwfbits = 0;
+ int ibits;
u64 vco;
u8 c = 0;
/* The fractional part of the PLL divider. */
- pcwfbits = pcwbits > INTEGER_BITS ? pcwbits - INTEGER_BITS : 0;
+ ibits = pll->data->pcwibits ? pll->data->pcwibits : INTEGER_BITS;
+ if (pcwbits > ibits)
+ pcwfbits = pcwbits - ibits;
vco = (u64)fin * pcw;
@@ -117,10 +115,7 @@
static void mtk_pll_set_rate_regs(struct mtk_clk_pll *pll, u32 pcw,
int postdiv)
{
- u32 con1, val;
- int pll_en;
-
- pll_en = readl(pll->base_addr + REG_CON0) & CON0_BASE_EN;
+ u32 chg, val;
/* disable tuner */
__mtk_pll_tuner_disable(pll);
@@ -141,21 +136,15 @@
pll->data->pcw_shift);
val |= pcw << pll->data->pcw_shift;
writel(val, pll->pcw_addr);
-
- con1 = readl(pll->base_addr + REG_CON1);
-
- if (pll_en)
- con1 |= CON0_PCW_CHG;
-
- writel(con1, pll->base_addr + REG_CON1);
+ chg = readl(pll->pcw_chg_addr) | PCW_CHG_MASK;
+ writel(chg, pll->pcw_chg_addr);
if (pll->tuner_addr)
- writel(con1 + 1, pll->tuner_addr);
+ writel(val + 1, pll->tuner_addr);
/* restore tuner_en */
__mtk_pll_tuner_enable(pll);
- if (pll_en)
- udelay(20);
+ udelay(20);
}
/*
@@ -170,9 +159,10 @@
static void mtk_pll_calc_values(struct mtk_clk_pll *pll, u32 *pcw, u32 *postdiv,
u32 freq, u32 fin)
{
- unsigned long fmin = 1000 * MHZ;
+ unsigned long fmin = pll->data->fmin ? pll->data->fmin : (1000 * MHZ);
const struct mtk_pll_div_table *div_table = pll->data->div_table;
u64 _pcw;
+ int ibits;
u32 val;
if (freq > pll->data->fmax)
@@ -196,7 +186,8 @@
}
/* _pcw = freq * postdiv / fin * 2^pcwfbits */
- _pcw = ((u64)freq << val) << (pll->data->pcwbits - INTEGER_BITS);
+ ibits = pll->data->pcwibits ? pll->data->pcwibits : INTEGER_BITS;
+ _pcw = ((u64)freq << val) << (pll->data->pcwbits - ibits);
do_div(_pcw, fin);
*pcw = (u32)_pcw;
@@ -322,6 +313,10 @@
pll->pwr_addr = base + data->pwr_reg;
pll->pd_addr = base + data->pd_reg;
pll->pcw_addr = base + data->pcw_reg;
+ if (data->pcw_chg_reg)
+ pll->pcw_chg_addr = base + data->pcw_chg_reg;
+ else
+ pll->pcw_chg_addr = pll->base_addr + REG_CON1;
if (data->tuner_reg)
pll->tuner_addr = base + data->tuner_reg;
if (data->tuner_en_reg)
--
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