clk: Loongson1: Refactor Loongson1 clock

Factor out the common functions into loongson1/clk.c
to support both Loongson1B and Loongson1C. And, put
the rest into loongson1/clk-loongson1b.c.

Signed-off-by: Kelvin Cheung <keguang.zhang@gmail.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>

1 files changed, 0 insertions, 162 deletions

diff --git a/drivers/clk/clk-ls1x.c b/drivers/clk/clk-ls1x.c
deleted file mode 100644
index 8430e45427f4..000000000000
--- a/drivers/clk/clk-ls1x.c
+++ /dev/null
@@ -1,162 +0,0 @@
-/*
- * Copyright (c) 2012 Zhang, Keguang <keguang.zhang@gmail.com>
- *
- * 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.
- */
-
-#include <linux/clkdev.h>
-#include <linux/clk-provider.h>
-#include <linux/io.h>
-#include <linux/slab.h>
-#include <linux/err.h>
-
-#include <loongson1.h>
-
-#define OSC		(33 * 1000000)
-#define DIV_APB		2
-
-static DEFINE_SPINLOCK(_lock);
-
-static int ls1x_pll_clk_enable(struct clk_hw *hw)
-{
-	return 0;
-}
-
-static void ls1x_pll_clk_disable(struct clk_hw *hw)
-{
-}
-
-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 & 0x3f) + (((pll >> 8) & 0x3ff) >> 10);
-	rate *= OSC;
-	rate >>= 1;
-
-	return rate;
-}
-
-static const struct clk_ops ls1x_pll_clk_ops = {
-	.enable = ls1x_pll_clk_enable,
-	.disable = ls1x_pll_clk_disable,
-	.recalc_rate = ls1x_pll_recalc_rate,
-};
-
-static struct clk_hw *__init clk_hw_register_pll(struct device *dev,
-						 const char *name,
-						 const char *parent_name,
-						 unsigned long flags)
-{
-	int ret;
-	struct clk_hw *hw;
-	struct clk_init_data init;
-
-	/* allocate the divider */
-	hw = kzalloc(sizeof(struct clk_hw), GFP_KERNEL);
-	if (!hw) {
-		pr_err("%s: could not allocate clk_hw\n", __func__);
-		return ERR_PTR(-ENOMEM);
-	}
-
-	init.name = name;
-	init.ops = &ls1x_pll_clk_ops;
-	init.flags = flags | CLK_IS_BASIC;
-	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;
-}
-
-static const char * const cpu_parents[] = { "cpu_clk_div", "osc_33m_clk", };
-static const char * const ahb_parents[] = { "ahb_clk_div", "osc_33m_clk", };
-static const char * const dc_parents[] = { "dc_clk_div", "osc_33m_clk", };
-
-void __init ls1x_clk_init(void)
-{
-	struct clk_hw *hw;
-
-	hw = clk_hw_register_fixed_rate(NULL, "osc_33m_clk", NULL, 0, OSC);
-	clk_hw_register_clkdev(hw, "osc_33m_clk", NULL);
-
-	/* clock derived from 33 MHz OSC clk */
-	hw = clk_hw_register_pll(NULL, "pll_clk", "osc_33m_clk", 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, "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_i2c", 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);
-}