Message-Id: <1368467199-8702-6-git-send-email-soren.brinkmann@xilinx.com>
Date:	Mon, 13 May 2013 10:46:39 -0700
From:	Soren Brinkmann <soren.brinkmann@...inx.com>
To:	Michal Simek <michal.simek@...inx.com>,
	Josh Cartwright <joshc@....teric.us>,
	Mike Turquette <mturquette@...aro.org>,
	Lars-Peter Clausen <lars@...afoo.de>,
	Peter Crosthwaite <peter.crosthwaite@...inx.com>
Cc:	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	Arnd Bergmann <arnd@...db.de>,
	Russell King <linux@....linux.org.uk>,
	Stephen Warren <swarren@...dotorg.org>,
	Soren Brinkmann <soren.brinkmann@...inx.com>,
	Grant Likely <grant.likely@...aro.org>,
	Rob Herring <rob.herring@...xeda.com>,
	Rob Landley <rob@...dley.net>,
	devicetree-discuss@...ts.ozlabs.org, linux-doc@...r.kernel.org
Subject: [PATCH v2 5/5] clk: zynq: Remove deprecated clock code

Signed-off-by: Soren Brinkmann <soren.brinkmann@...inx.com>
Cc: Grant Likely <grant.likely@...aro.org>
Cc: Rob Herring <rob.herring@...xeda.com>
Cc: Rob Landley <rob@...dley.net>
Cc: devicetree-discuss@...ts.ozlabs.org
Cc: linux-doc@...r.kernel.org
---
 .../devicetree/bindings/clock/zynq-7000.txt        |  49 ---
 drivers/clk/clk-zynq.c                             | 378 ---------------------
 2 files changed, 427 deletions(-)
 delete mode 100644 drivers/clk/clk-zynq.c

diff --git a/Documentation/devicetree/bindings/clock/zynq-7000.txt b/Documentation/devicetree/bindings/clock/zynq-7000.txt
index 30bfca9..b013ec6 100644
--- a/Documentation/devicetree/bindings/clock/zynq-7000.txt
+++ b/Documentation/devicetree/bindings/clock/zynq-7000.txt
@@ -102,52 +102,3 @@ Example:
 		clocks = <&clkc 16>, <&clk_foo>;
 		clock-names = "gem1_emio_clk", "can_mio_clk_23";
         };
-
-
-== PLLs ==
-
-Used to describe the ARM_PLL, DDR_PLL, and IO_PLL.
-
-Required properties:
-- #clock-cells : shall be 0 (only one clock is output from this node)
-- compatible : "xlnx,zynq-pll"
-- reg : pair of u32 values, which are the address offsets within the SLCR
-        of the relevant PLL_CTRL register and PLL_CFG register respectively
-- clocks : phandle for parent clock.  should be the phandle for ps_clk
-
-Optional properties:
-- clock-output-names : name of the output clock
-
-Example:
-	armpll: armpll {
-		#clock-cells = <0>;
-		compatible = "xlnx,zynq-pll";
-		clocks = <&ps_clk>;
-		reg = <0x100 0x110>;
-		clock-output-names = "armpll";
-	};
-
-== Peripheral clocks ==
-
-Describes clock node for the SDIO, SMC, SPI, QSPI, and UART clocks.
-
-Required properties:
-- #clock-cells : shall be 1
-- compatible : "xlnx,zynq-periph-clock"
-- reg : a single u32 value, describing the offset within the SLCR where
-        the CLK_CTRL register is found for this peripheral
-- clocks : phandle for parent clocks.  should hold phandles for
-           the IO_PLL, ARM_PLL, and DDR_PLL in order
-- clock-output-names : names of the output clock(s).  For peripherals that have
-                       two output clocks (for example, the UART), two clocks
-                       should be listed.
-
-Example:
-	uart_clk: uart_clk {
-		#clock-cells = <1>;
-		compatible = "xlnx,zynq-periph-clock";
-		clocks = <&iopll &armpll &ddrpll>;
-		reg = <0x154>;
-		clock-output-names = "uart0_ref_clk",
-				     "uart1_ref_clk";
-	};
diff --git a/drivers/clk/clk-zynq.c b/drivers/clk/clk-zynq.c
deleted file mode 100644
index 3206297..0000000
--- a/drivers/clk/clk-zynq.c
+++ /dev/null
@@ -1,378 +0,0 @@
-/*
- * Copyright (c) 2012 National Instruments
- *
- * Josh Cartwright <josh.cartwright@...com>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope 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.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-#include <linux/io.h>
-#include <linux/of.h>
-#include <linux/slab.h>
-#include <linux/kernel.h>
-#include <linux/clk-provider.h>
-#include <linux/clk/zynq.h>
-
-static void __iomem *slcr_base;
-
-struct zynq_pll_clk {
-	struct clk_hw	hw;
-	void __iomem	*pll_ctrl;
-	void __iomem	*pll_cfg;
-};
-
-#define to_zynq_pll_clk(hw)	container_of(hw, struct zynq_pll_clk, hw)
-
-#define CTRL_PLL_FDIV(x)	((x) >> 12)
-
-static unsigned long zynq_pll_recalc_rate(struct clk_hw *hw,
-					  unsigned long parent_rate)
-{
-	struct zynq_pll_clk *pll = to_zynq_pll_clk(hw);
-	return parent_rate * CTRL_PLL_FDIV(ioread32(pll->pll_ctrl));
-}
-
-static const struct clk_ops zynq_pll_clk_ops = {
-	.recalc_rate	= zynq_pll_recalc_rate,
-};
-
-static void __init zynq_pll_clk_setup(struct device_node *np)
-{
-	struct clk_init_data init;
-	struct zynq_pll_clk *pll;
-	const char *parent_name;
-	struct clk *clk;
-	u32 regs[2];
-	int ret;
-
-	ret = of_property_read_u32_array(np, "reg", regs, ARRAY_SIZE(regs));
-	if (WARN_ON(ret))
-		return;
-
-	pll = kzalloc(sizeof(*pll), GFP_KERNEL);
-	if (WARN_ON(!pll))
-		return;
-
-	pll->pll_ctrl = slcr_base + regs[0];
-	pll->pll_cfg  = slcr_base + regs[1];
-
-	of_property_read_string(np, "clock-output-names", &init.name);
-
-	init.ops = &zynq_pll_clk_ops;
-	parent_name = of_clk_get_parent_name(np, 0);
-	init.parent_names = &parent_name;
-	init.num_parents = 1;
-
-	pll->hw.init = &init;
-
-	clk = clk_register(NULL, &pll->hw);
-	if (WARN_ON(IS_ERR(clk)))
-		return;
-
-	ret = of_clk_add_provider(np, of_clk_src_simple_get, clk);
-	if (WARN_ON(ret))
-		return;
-}
-CLK_OF_DECLARE(zynq_pll, "xlnx,zynq-pll", zynq_pll_clk_setup);
-
-struct zynq_periph_clk {
-	struct clk_hw		hw;
-	struct clk_onecell_data	onecell_data;
-	struct clk		*gates[2];
-	void __iomem		*clk_ctrl;
-	spinlock_t		clkact_lock;
-};
-
-#define to_zynq_periph_clk(hw)	container_of(hw, struct zynq_periph_clk, hw)
-
-static const u8 periph_clk_parent_map[] = {
-	0, 0, 1, 2
-};
-#define PERIPH_CLK_CTRL_SRC(x)	(periph_clk_parent_map[((x) & 0x30) >> 4])
-#define PERIPH_CLK_CTRL_DIV(x)	(((x) & 0x3F00) >> 8)
-
-static unsigned long zynq_periph_recalc_rate(struct clk_hw *hw,
-					     unsigned long parent_rate)
-{
-	struct zynq_periph_clk *periph = to_zynq_periph_clk(hw);
-	return parent_rate / PERIPH_CLK_CTRL_DIV(ioread32(periph->clk_ctrl));
-}
-
-static u8 zynq_periph_get_parent(struct clk_hw *hw)
-{
-	struct zynq_periph_clk *periph = to_zynq_periph_clk(hw);
-	return PERIPH_CLK_CTRL_SRC(ioread32(periph->clk_ctrl));
-}
-
-static const struct clk_ops zynq_periph_clk_ops = {
-	.recalc_rate	= zynq_periph_recalc_rate,
-	.get_parent	= zynq_periph_get_parent,
-};
-
-static void __init zynq_periph_clk_setup(struct device_node *np)
-{
-	struct zynq_periph_clk *periph;
-	const char *parent_names[3];
-	struct clk_init_data init;
-	int clk_num = 0, err;
-	const char *name;
-	struct clk *clk;
-	u32 reg;
-	int i;
-
-	err = of_property_read_u32(np, "reg", &reg);
-	if (WARN_ON(err))
-		return;
-
-	periph = kzalloc(sizeof(*periph), GFP_KERNEL);
-	if (WARN_ON(!periph))
-		return;
-
-	periph->clk_ctrl = slcr_base + reg;
-	spin_lock_init(&periph->clkact_lock);
-
-	init.name = np->name;
-	init.ops = &zynq_periph_clk_ops;
-	for (i = 0; i < ARRAY_SIZE(parent_names); i++)
-		parent_names[i] = of_clk_get_parent_name(np, i);
-	init.parent_names = parent_names;
-	init.num_parents = ARRAY_SIZE(parent_names);
-
-	periph->hw.init = &init;
-
-	clk = clk_register(NULL, &periph->hw);
-	if (WARN_ON(IS_ERR(clk)))
-		return;
-
-	err = of_clk_add_provider(np, of_clk_src_simple_get, clk);
-	if (WARN_ON(err))
-		return;
-
-	err = of_property_read_string_index(np, "clock-output-names", 0,
-					    &name);
-	if (WARN_ON(err))
-		return;
-
-	periph->gates[0] = clk_register_gate(NULL, name, np->name, 0,
-					     periph->clk_ctrl, 0, 0,
-					     &periph->clkact_lock);
-	if (WARN_ON(IS_ERR(periph->gates[0])))
-		return;
-	clk_num++;
-
-	/* some periph clks have 2 downstream gates */
-	err = of_property_read_string_index(np, "clock-output-names", 1,
-					    &name);
-	if (err != -ENODATA) {
-		periph->gates[1] = clk_register_gate(NULL, name, np->name, 0,
-						     periph->clk_ctrl, 1, 0,
-						     &periph->clkact_lock);
-		if (WARN_ON(IS_ERR(periph->gates[1])))
-			return;
-		clk_num++;
-	}
-
-	periph->onecell_data.clks = periph->gates;
-	periph->onecell_data.clk_num = clk_num;
-
-	err = of_clk_add_provider(np, of_clk_src_onecell_get,
-				  &periph->onecell_data);
-	if (WARN_ON(err))
-		return;
-}
-CLK_OF_DECLARE(zynq_periph, "xlnx,zynq-periph-clock", zynq_periph_clk_setup);
-
-/* CPU Clock domain is modelled as a mux with 4 children subclks, whose
- * derivative rates depend on CLK_621_TRUE
- */
-
-struct zynq_cpu_clk {
-	struct clk_hw		hw;
-	struct clk_onecell_data	onecell_data;
-	struct clk		*subclks[4];
-	void __iomem		*clk_ctrl;
-	spinlock_t		clkact_lock;
-};
-
-#define to_zynq_cpu_clk(hw)	container_of(hw, struct zynq_cpu_clk, hw)
-
-static const u8 zynq_cpu_clk_parent_map[] = {
-	1, 1, 2, 0
-};
-#define CPU_CLK_SRCSEL(x)	(zynq_cpu_clk_parent_map[(((x) & 0x30) >> 4)])
-#define CPU_CLK_CTRL_DIV(x)	(((x) & 0x3F00) >> 8)
-
-static u8 zynq_cpu_clk_get_parent(struct clk_hw *hw)
-{
-	struct zynq_cpu_clk *cpuclk = to_zynq_cpu_clk(hw);
-	return CPU_CLK_SRCSEL(ioread32(cpuclk->clk_ctrl));
-}
-
-static unsigned long zynq_cpu_clk_recalc_rate(struct clk_hw *hw,
-					      unsigned long parent_rate)
-{
-	struct zynq_cpu_clk *cpuclk = to_zynq_cpu_clk(hw);
-	return parent_rate / CPU_CLK_CTRL_DIV(ioread32(cpuclk->clk_ctrl));
-}
-
-static const struct clk_ops zynq_cpu_clk_ops = {
-	.get_parent	= zynq_cpu_clk_get_parent,
-	.recalc_rate	= zynq_cpu_clk_recalc_rate,
-};
-
-struct zynq_cpu_subclk {
-	struct clk_hw	hw;
-	void __iomem	*clk_621;
-	enum {
-		CPU_SUBCLK_6X4X,
-		CPU_SUBCLK_3X2X,
-		CPU_SUBCLK_2X,
-		CPU_SUBCLK_1X,
-	} which;
-};
-
-#define CLK_621_TRUE(x)	((x) & 1)
-
-#define to_zynq_cpu_subclk(hw)	container_of(hw, struct zynq_cpu_subclk, hw);
-
-static unsigned long zynq_cpu_subclk_recalc_rate(struct clk_hw *hw,
-						 unsigned long parent_rate)
-{
-	unsigned long uninitialized_var(rate);
-	struct zynq_cpu_subclk *subclk;
-	bool is_621;
-
-	subclk = to_zynq_cpu_subclk(hw)
-	is_621 = CLK_621_TRUE(ioread32(subclk->clk_621));
-
-	switch (subclk->which) {
-	case CPU_SUBCLK_6X4X:
-		rate = parent_rate;
-		break;
-	case CPU_SUBCLK_3X2X:
-		rate = parent_rate / 2;
-		break;
-	case CPU_SUBCLK_2X:
-		rate = parent_rate / (is_621 ? 3 : 2);
-		break;
-	case CPU_SUBCLK_1X:
-		rate = parent_rate / (is_621 ? 6 : 4);
-		break;
-	};
-
-	return rate;
-}
-
-static const struct clk_ops zynq_cpu_subclk_ops = {
-	.recalc_rate	= zynq_cpu_subclk_recalc_rate,
-};
-
-static struct clk *zynq_cpu_subclk_setup(struct device_node *np, u8 which,
-					 void __iomem *clk_621)
-{
-	struct zynq_cpu_subclk *subclk;
-	struct clk_init_data init;
-	struct clk *clk;
-	int err;
-
-	err = of_property_read_string_index(np, "clock-output-names",
-					    which, &init.name);
-	if (WARN_ON(err))
-		goto err_read_output_name;
-
-	subclk = kzalloc(sizeof(*subclk), GFP_KERNEL);
-	if (!subclk)
-		goto err_subclk_alloc;
-
-	subclk->clk_621 = clk_621;
-	subclk->which = which;
-
-	init.ops = &zynq_cpu_subclk_ops;
-	init.parent_names = &np->name;
-	init.num_parents = 1;
-
-	subclk->hw.init = &init;
-
-	clk = clk_register(NULL, &subclk->hw);
-	if (WARN_ON(IS_ERR(clk)))
-		goto err_clk_register;
-
-	return clk;
-
-err_clk_register:
-	kfree(subclk);
-err_subclk_alloc:
-err_read_output_name:
-	return ERR_PTR(-EINVAL);
-}
-
-static void __init zynq_cpu_clk_setup(struct device_node *np)
-{
-	struct zynq_cpu_clk *cpuclk;
-	const char *parent_names[3];
-	struct clk_init_data init;
-	void __iomem *clk_621;
-	struct clk *clk;
-	u32 reg[2];
-	int err;
-	int i;
-
-	err = of_property_read_u32_array(np, "reg", reg, ARRAY_SIZE(reg));
-	if (WARN_ON(err))
-		return;
-
-	cpuclk = kzalloc(sizeof(*cpuclk), GFP_KERNEL);
-	if (WARN_ON(!cpuclk))
-		return;
-
-	cpuclk->clk_ctrl = slcr_base + reg[0];
-	clk_621 = slcr_base + reg[1];
-	spin_lock_init(&cpuclk->clkact_lock);
-
-	init.name = np->name;
-	init.ops = &zynq_cpu_clk_ops;
-	for (i = 0; i < ARRAY_SIZE(parent_names); i++)
-		parent_names[i] = of_clk_get_parent_name(np, i);
-	init.parent_names = parent_names;
-	init.num_parents = ARRAY_SIZE(parent_names);
-
-	cpuclk->hw.init = &init;
-
-	clk = clk_register(NULL, &cpuclk->hw);
-	if (WARN_ON(IS_ERR(clk)))
-		return;
-
-	err = of_clk_add_provider(np, of_clk_src_simple_get, clk);
-	if (WARN_ON(err))
-		return;
-
-	for (i = 0; i < 4; i++) {
-		cpuclk->subclks[i] = zynq_cpu_subclk_setup(np, i, clk_621);
-		if (WARN_ON(IS_ERR(cpuclk->subclks[i])))
-			return;
-	}
-
-	cpuclk->onecell_data.clks = cpuclk->subclks;
-	cpuclk->onecell_data.clk_num = i;
-
-	err = of_clk_add_provider(np, of_clk_src_onecell_get,
-				  &cpuclk->onecell_data);
-	if (WARN_ON(err))
-		return;
-}
-CLK_OF_DECLARE(zynq_cpu, "xlnx,zynq-cpu-clock", zynq_cpu_clk_setup);
-
-void __init xilinx_zynq_clocks_init(void __iomem *slcr)
-{
-	slcr_base = slcr;
-	of_clk_init(NULL);
-}
-- 
1.8.2.3

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