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[35.220.130.94]) by smtp.gmail.com with ESMTPSA id f11-20020aa78b0b000000b005d4e89b69e5sm5143263pfd.127.2023.03.16.03.47.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 16 Mar 2023 03:47:24 -0700 (PDT) From: Keguang Zhang To: linux-clk@vger.kernel.org, devicetree@vger.kernel.org, linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Michael Turquette , Stephen Boyd , Rob Herring , Krzysztof Kozlowski , Thomas Bogendoerfer , Keguang Zhang Subject: [PATCH v3 2/4] clk: loongson1: Remove the outdated driver Date: Thu, 16 Mar 2023 18:47:05 +0800 Message-Id: <20230316104707.236034-3-keguang.zhang@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230316104707.236034-1-keguang.zhang@gmail.com> References: <20230316104707.236034-1-keguang.zhang@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org Remove the outdated driver due to the following aspects. - no DT support - duplicate code across LS1B and LS1C - does not fit into the current clock framework Signed-off-by: Keguang Zhang --- V2 -> V3: None V1 -> V2: Split the driver removal to a separate patch --- drivers/clk/Makefile | 1 - drivers/clk/loongson1/Makefile | 4 - drivers/clk/loongson1/clk-loongson1b.c | 118 ------------------------- drivers/clk/loongson1/clk-loongson1c.c | 95 -------------------- drivers/clk/loongson1/clk.c | 41 --------- drivers/clk/loongson1/clk.h | 15 ---- 6 files changed, 274 deletions(-) delete mode 100644 drivers/clk/loongson1/Makefile delete mode 100644 drivers/clk/loongson1/clk-loongson1b.c delete mode 100644 drivers/clk/loongson1/clk-loongson1c.c delete mode 100644 drivers/clk/loongson1/clk.c delete mode 100644 drivers/clk/loongson1/clk.h diff --git a/drivers/clk/Makefile b/drivers/clk/Makefile index e3ca0d058a25..b7b2c6d64636 100644 --- a/drivers/clk/Makefile +++ b/drivers/clk/Makefile @@ -93,7 +93,6 @@ obj-y += imx/ obj-y += ingenic/ obj-$(CONFIG_ARCH_K3) += keystone/ obj-$(CONFIG_ARCH_KEYSTONE) += keystone/ -obj-$(CONFIG_MACH_LOONGSON32) += loongson1/ obj-y += mediatek/ obj-$(CONFIG_ARCH_MESON) += meson/ obj-y += microchip/ diff --git a/drivers/clk/loongson1/Makefile b/drivers/clk/loongson1/Makefile deleted file mode 100644 index 251d0fe9dcd1..000000000000 --- a/drivers/clk/loongson1/Makefile +++ /dev/null @@ -1,4 +0,0 @@ -# SPDX-License-Identifier: GPL-2.0-only -obj-y += clk.o -obj-$(CONFIG_LOONGSON1_LS1B) += clk-loongson1b.o -obj-$(CONFIG_LOONGSON1_LS1C) += clk-loongson1c.o diff --git a/drivers/clk/loongson1/clk-loongson1b.c b/drivers/clk/loongson1/clk-loongson1b.c deleted file mode 100644 index 13a2ca23a159..000000000000 --- a/drivers/clk/loongson1/clk-loongson1b.c +++ /dev/null @@ -1,118 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - * Copyright (c) 2012-2016 Zhang, Keguang - */ - -#include -#include -#include -#include - -#include -#include "clk.h" - -#define OSC (33 * 1000000) -#define DIV_APB 2 - -static DEFINE_SPINLOCK(_lock); - -static unsigned long ls1x_pll_recalc_rate(struct clk_hw *hw, - unsigned long parent_rate) -{ - u32 pll, rate; - - pll = __raw_readl(LS1X_CLK_PLL_FREQ); - rate = 12 + (pll & GENMASK(5, 0)); - rate *= OSC; - rate >>= 1; - - return rate; -} - -static const struct clk_ops ls1x_pll_clk_ops = { - .recalc_rate = ls1x_pll_recalc_rate, -}; - -static const char *const cpu_parents[] = { "cpu_clk_div", "osc_clk", }; -static const char *const ahb_parents[] = { "ahb_clk_div", "osc_clk", }; -static const char *const dc_parents[] = { "dc_clk_div", "osc_clk", }; - -void __init ls1x_clk_init(void) -{ - struct clk_hw *hw; - - hw = clk_hw_register_fixed_rate(NULL, "osc_clk", NULL, 0, OSC); - clk_hw_register_clkdev(hw, "osc_clk", NULL); - - /* clock derived from 33 MHz OSC clk */ - hw = clk_hw_register_pll(NULL, "pll_clk", "osc_clk", - &ls1x_pll_clk_ops, 0); - clk_hw_register_clkdev(hw, "pll_clk", NULL); - - /* clock derived from PLL clk */ - /* _____ - * _______________________| | - * OSC ___/ | MUX |___ CPU CLK - * \___ PLL ___ CPU DIV ___| | - * |_____| - */ - hw = clk_hw_register_divider(NULL, "cpu_clk_div", "pll_clk", - CLK_GET_RATE_NOCACHE, LS1X_CLK_PLL_DIV, - DIV_CPU_SHIFT, DIV_CPU_WIDTH, - CLK_DIVIDER_ONE_BASED | - CLK_DIVIDER_ROUND_CLOSEST, &_lock); - clk_hw_register_clkdev(hw, "cpu_clk_div", NULL); - hw = clk_hw_register_mux(NULL, "cpu_clk", cpu_parents, - ARRAY_SIZE(cpu_parents), - CLK_SET_RATE_NO_REPARENT, LS1X_CLK_PLL_DIV, - BYPASS_CPU_SHIFT, BYPASS_CPU_WIDTH, 0, &_lock); - clk_hw_register_clkdev(hw, "cpu_clk", NULL); - - /* _____ - * _______________________| | - * OSC ___/ | MUX |___ DC CLK - * \___ PLL ___ DC DIV ___| | - * |_____| - */ - hw = clk_hw_register_divider(NULL, "dc_clk_div", "pll_clk", - 0, LS1X_CLK_PLL_DIV, DIV_DC_SHIFT, - DIV_DC_WIDTH, CLK_DIVIDER_ONE_BASED, &_lock); - clk_hw_register_clkdev(hw, "dc_clk_div", NULL); - hw = clk_hw_register_mux(NULL, "dc_clk", dc_parents, - ARRAY_SIZE(dc_parents), - CLK_SET_RATE_NO_REPARENT, LS1X_CLK_PLL_DIV, - BYPASS_DC_SHIFT, BYPASS_DC_WIDTH, 0, &_lock); - clk_hw_register_clkdev(hw, "dc_clk", NULL); - - /* _____ - * _______________________| | - * OSC ___/ | MUX |___ DDR CLK - * \___ PLL ___ DDR DIV ___| | - * |_____| - */ - hw = clk_hw_register_divider(NULL, "ahb_clk_div", "pll_clk", - 0, LS1X_CLK_PLL_DIV, DIV_DDR_SHIFT, - DIV_DDR_WIDTH, CLK_DIVIDER_ONE_BASED, - &_lock); - clk_hw_register_clkdev(hw, "ahb_clk_div", NULL); - hw = clk_hw_register_mux(NULL, "ahb_clk", ahb_parents, - ARRAY_SIZE(ahb_parents), - CLK_SET_RATE_NO_REPARENT, LS1X_CLK_PLL_DIV, - BYPASS_DDR_SHIFT, BYPASS_DDR_WIDTH, 0, &_lock); - clk_hw_register_clkdev(hw, "ahb_clk", NULL); - clk_hw_register_clkdev(hw, "ls1x-dma", NULL); - clk_hw_register_clkdev(hw, "stmmaceth", NULL); - - /* clock derived from AHB clk */ - /* APB clk is always half of the AHB clk */ - hw = clk_hw_register_fixed_factor(NULL, "apb_clk", "ahb_clk", 0, 1, - DIV_APB); - clk_hw_register_clkdev(hw, "apb_clk", NULL); - clk_hw_register_clkdev(hw, "ls1x-ac97", NULL); - clk_hw_register_clkdev(hw, "ls1x-i2c", NULL); - clk_hw_register_clkdev(hw, "ls1x-nand", NULL); - clk_hw_register_clkdev(hw, "ls1x-pwmtimer", NULL); - clk_hw_register_clkdev(hw, "ls1x-spi", NULL); - clk_hw_register_clkdev(hw, "ls1x-wdt", NULL); - clk_hw_register_clkdev(hw, "serial8250", NULL); -} diff --git a/drivers/clk/loongson1/clk-loongson1c.c b/drivers/clk/loongson1/clk-loongson1c.c deleted file mode 100644 index 1ebf740380ef..000000000000 --- a/drivers/clk/loongson1/clk-loongson1c.c +++ /dev/null @@ -1,95 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - * Copyright (c) 2016 Yang Ling - */ - -#include -#include -#include - -#include -#include "clk.h" - -#define OSC (24 * 1000000) -#define DIV_APB 1 - -static DEFINE_SPINLOCK(_lock); - -static unsigned long ls1x_pll_recalc_rate(struct clk_hw *hw, - unsigned long parent_rate) -{ - u32 pll, rate; - - pll = __raw_readl(LS1X_CLK_PLL_FREQ); - rate = ((pll >> 8) & 0xff) + ((pll >> 16) & 0xff); - rate *= OSC; - rate >>= 2; - - return rate; -} - -static const struct clk_ops ls1x_pll_clk_ops = { - .recalc_rate = ls1x_pll_recalc_rate, -}; - -static const struct clk_div_table ahb_div_table[] = { - [0] = { .val = 0, .div = 2 }, - [1] = { .val = 1, .div = 4 }, - [2] = { .val = 2, .div = 3 }, - [3] = { .val = 3, .div = 3 }, - [4] = { /* sentinel */ } -}; - -void __init ls1x_clk_init(void) -{ - struct clk_hw *hw; - - hw = clk_hw_register_fixed_rate(NULL, "osc_clk", NULL, 0, OSC); - clk_hw_register_clkdev(hw, "osc_clk", NULL); - - /* clock derived from 24 MHz OSC clk */ - hw = clk_hw_register_pll(NULL, "pll_clk", "osc_clk", - &ls1x_pll_clk_ops, 0); - clk_hw_register_clkdev(hw, "pll_clk", NULL); - - hw = clk_hw_register_divider(NULL, "cpu_clk_div", "pll_clk", - CLK_GET_RATE_NOCACHE, LS1X_CLK_PLL_DIV, - DIV_CPU_SHIFT, DIV_CPU_WIDTH, - CLK_DIVIDER_ONE_BASED | - CLK_DIVIDER_ROUND_CLOSEST, &_lock); - clk_hw_register_clkdev(hw, "cpu_clk_div", NULL); - hw = clk_hw_register_fixed_factor(NULL, "cpu_clk", "cpu_clk_div", - 0, 1, 1); - clk_hw_register_clkdev(hw, "cpu_clk", NULL); - - hw = clk_hw_register_divider(NULL, "dc_clk_div", "pll_clk", - 0, LS1X_CLK_PLL_DIV, DIV_DC_SHIFT, - DIV_DC_WIDTH, CLK_DIVIDER_ONE_BASED, &_lock); - clk_hw_register_clkdev(hw, "dc_clk_div", NULL); - hw = clk_hw_register_fixed_factor(NULL, "dc_clk", "dc_clk_div", - 0, 1, 1); - clk_hw_register_clkdev(hw, "dc_clk", NULL); - - hw = clk_hw_register_divider_table(NULL, "ahb_clk_div", "cpu_clk_div", - 0, LS1X_CLK_PLL_FREQ, DIV_DDR_SHIFT, - DIV_DDR_WIDTH, CLK_DIVIDER_ALLOW_ZERO, - ahb_div_table, &_lock); - clk_hw_register_clkdev(hw, "ahb_clk_div", NULL); - hw = clk_hw_register_fixed_factor(NULL, "ahb_clk", "ahb_clk_div", - 0, 1, 1); - clk_hw_register_clkdev(hw, "ahb_clk", NULL); - clk_hw_register_clkdev(hw, "ls1x-dma", NULL); - clk_hw_register_clkdev(hw, "stmmaceth", NULL); - - /* clock derived from AHB clk */ - hw = clk_hw_register_fixed_factor(NULL, "apb_clk", "ahb_clk", 0, 1, - DIV_APB); - clk_hw_register_clkdev(hw, "apb_clk", NULL); - clk_hw_register_clkdev(hw, "ls1x-ac97", NULL); - clk_hw_register_clkdev(hw, "ls1x-i2c", NULL); - clk_hw_register_clkdev(hw, "ls1x-nand", NULL); - clk_hw_register_clkdev(hw, "ls1x-pwmtimer", NULL); - clk_hw_register_clkdev(hw, "ls1x-spi", NULL); - clk_hw_register_clkdev(hw, "ls1x-wdt", NULL); - clk_hw_register_clkdev(hw, "serial8250", NULL); -} diff --git a/drivers/clk/loongson1/clk.c b/drivers/clk/loongson1/clk.c deleted file mode 100644 index f336a3126d31..000000000000 --- a/drivers/clk/loongson1/clk.c +++ /dev/null @@ -1,41 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - * Copyright (c) 2012-2016 Zhang, Keguang - */ - -#include -#include - -#include "clk.h" - -struct clk_hw *__init clk_hw_register_pll(struct device *dev, - const char *name, - const char *parent_name, - const struct clk_ops *ops, - unsigned long flags) -{ - int ret; - struct clk_hw *hw; - struct clk_init_data init; - - /* allocate the divider */ - hw = kzalloc(sizeof(*hw), GFP_KERNEL); - if (!hw) - return ERR_PTR(-ENOMEM); - - init.name = name; - init.ops = ops; - init.flags = flags; - init.parent_names = parent_name ? &parent_name : NULL; - init.num_parents = parent_name ? 1 : 0; - hw->init = &init; - - /* register the clock */ - ret = clk_hw_register(dev, hw); - if (ret) { - kfree(hw); - hw = ERR_PTR(ret); - } - - return hw; -} diff --git a/drivers/clk/loongson1/clk.h b/drivers/clk/loongson1/clk.h deleted file mode 100644 index 124642302b12..000000000000 --- a/drivers/clk/loongson1/clk.h +++ /dev/null @@ -1,15 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-or-later */ -/* - * Copyright (c) 2012-2016 Zhang, Keguang - */ - -#ifndef __LOONGSON1_CLK_H -#define __LOONGSON1_CLK_H - -struct clk_hw *clk_hw_register_pll(struct device *dev, - const char *name, - const char *parent_name, - const struct clk_ops *ops, - unsigned long flags); - -#endif /* __LOONGSON1_CLK_H */