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Commit 65010564 authored by Rickard Strandqvist's avatar Rickard Strandqvist Committed by Sekhar Nori
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ARM: davinci: Remove CDCE949 driver 



Remove driver CDCE949 because it is not used anywhere in kernel.
It has remained unused for last 5 years.

Signed-off-by: default avatarRickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
[nsekhar@ti.com: remove additional cdce949 support vestiges
                 and minor updates to commit text]
Signed-off-by: default avatarSekhar Nori <nsekhar@ti.com>
parent 6e4b4dd5

arch/arm/mach-davinci/Makefile

+1 −1
Original line number Diff line number Diff line
@@ -27,7 +27,7 @@ obj-$(CONFIG_MACH_SFFSDR) += board-sffsdr.o 
obj-$(CONFIG_MACH_NEUROS_OSD2)		+= board-neuros-osd2.o

obj-$(CONFIG_MACH_DAVINCI_DM355_EVM)	+= board-dm355-evm.o

obj-$(CONFIG_MACH_DM355_LEOPARD)	+= board-dm355-leopard.o

obj-$(CONFIG_MACH_DAVINCI_DM6467_EVM)	+= board-dm646x-evm.o cdce949.o

obj-$(CONFIG_MACH_DAVINCI_DM6467_EVM)	+= board-dm646x-evm.o

obj-$(CONFIG_MACH_DAVINCI_DM365_EVM)	+= board-dm365-evm.o

obj-$(CONFIG_MACH_DAVINCI_DA830_EVM)	+= board-da830-evm.o

obj-$(CONFIG_MACH_DAVINCI_DA850_EVM)	+= board-da850-evm.o

arch/arm/mach-davinci/board-dm646x-evm.c

+0 −31
Original line number Diff line number Diff line
@@ -45,7 +45,6 @@ 
#include <mach/irqs.h>

#include <mach/serial.h>

#include <mach/clock.h>

#include <mach/cdce949.h>



#include "davinci.h"

#include "clock.h"
@@ -399,9 +398,6 @@ static struct i2c_board_info __initdata i2c_info[] = { 
	{

		I2C_BOARD_INFO("cpld_video", 0x3b),

	},

	{

		I2C_BOARD_INFO("cdce949", 0x6c),

	},

};



static struct davinci_i2c_platform_data i2c_pdata = {
@@ -715,31 +711,6 @@ static void __init evm_init_i2c(void) 
	evm_init_video();

}



#define CDCE949_XIN_RATE	27000000



/* CDCE949 support - "lpsc" field is overridden to work as clock number */

static struct clk cdce_clk_in = {

	.name	= "cdce_xin",

	.rate	= CDCE949_XIN_RATE,

};



static struct clk_lookup cdce_clks[] = {

	CLK(NULL, "xin", &cdce_clk_in),

	CLK(NULL, NULL, NULL),

};



static void __init cdce_clk_init(void)

{

	struct clk_lookup *c;

	struct clk *clk;



	for (c = cdce_clks; c->clk; c++) {

		clk = c->clk;

		clkdev_add(c);

		clk_register(clk);

	}

}



#define DM6467T_EVM_REF_FREQ		33000000



static void __init davinci_map_io(void)
@@ -748,8 +719,6 @@ static void __init davinci_map_io(void) 


	if (machine_is_davinci_dm6467tevm())

		davinci_set_refclk_rate(DM6467T_EVM_REF_FREQ);



	cdce_clk_init();

}



#define DM646X_EVM_PHY_ID		"davinci_mdio-0:01"

arch/arm/mach-davinci/cdce949.c

deleted100644 → 0
+0 −295
Original line number Diff line number Diff line 
/*

 * TI CDCE949 clock synthesizer driver

 *

 * Note: This implementation assumes an input of 27MHz to the CDCE.

 * This is by no means constrained by CDCE hardware although the datasheet

 * does use this as an example for all illustrations and more importantly:

 * that is the crystal input on boards it is currently used on.

 *

 * Copyright (C) 2009 Texas Instruments Incorporated. http://www.ti.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.

 *

 */

#include <linux/kernel.h>

#include <linux/clk.h>

#include <linux/platform_device.h>

#include <linux/i2c.h>

#include <linux/module.h>



#include <mach/clock.h>

#include <mach/cdce949.h>



#include "clock.h"



static struct i2c_client *cdce_i2c_client;

static DEFINE_MUTEX(cdce_mutex);



/* CDCE register descriptor */

struct cdce_reg {

	u8	addr;

	u8	val;

};



/* Per-Output (Y1, Y2 etc.) frequency descriptor */

struct cdce_freq {

	/* Frequency in KHz */

	unsigned long frequency;

	/*

	 * List of registers to program to obtain a particular frequency.

	 * 0x0 in register address and value is the end of list marker.

	 */

	struct cdce_reg *reglist;

};



#define CDCE_FREQ_TABLE_ENTRY(line, out)		\

{							\

	.reglist	= cdce_y ##line## _ ##out,		\

	.frequency	= out,				\

}



/* List of CDCE outputs  */

struct cdce_output {

	/* List of frequencies on this output */

	struct cdce_freq *freq_table;

	/* Number of possible frequencies */

	int size;

};



/*

 * Finding out the values to program into CDCE949 registers for a particular

 * frequency output is not a simple calculation. Have a look at the datasheet

 * for the details. There is desktop software available to help users with

 * the calculations. Here, we just depend on the output of that software

 * (or hand calculations) instead trying to runtime calculate the register

 * values and inflicting misery on ourselves.

 */

static struct cdce_reg cdce_y1_148500[] = {

	{ 0x13, 0x00 },

	/* program PLL1_0 multiplier */

	{ 0x18, 0xaf },

	{ 0x19, 0x50 },

	{ 0x1a, 0x02 },

	{ 0x1b, 0xc9 },

	/* program PLL1_11 multiplier */

	{ 0x1c, 0x00 },

	{ 0x1d, 0x40 },

	{ 0x1e, 0x02 },

	{ 0x1f, 0xc9 },

	/* output state selection */

	{ 0x15, 0x00 },

	{ 0x14, 0xef },

	/* switch MUX to PLL1 output */

	{ 0x14, 0x6f },

	{ 0x16, 0x06 },

	/* set P2DIV divider, P3DIV and input crystal */

	{ 0x17, 0x06 },

	{ 0x01, 0x00 },

	{ 0x05, 0x48 },

	{ 0x02, 0x80 },

	/* enable and disable PLL */

	{ 0x02, 0xbc },

	{ 0x03, 0x01 },

	{ },

};



static struct cdce_reg cdce_y1_74250[] = {

	{ 0x13, 0x00 },

	{ 0x18, 0xaf },

	{ 0x19, 0x50 },

	{ 0x1a, 0x02 },

	{ 0x1b, 0xc9 },

	{ 0x1c, 0x00 },

	{ 0x1d, 0x40 },

	{ 0x1e, 0x02 },

	{ 0x1f, 0xc9 },

	/* output state selection */

	{ 0x15, 0x00 },

	{ 0x14, 0xef },

	/* switch MUX to PLL1 output */

	{ 0x14, 0x6f },

	{ 0x16, 0x06 },

	/* set P2DIV divider, P3DIV and input crystal */

	{ 0x17, 0x06 },

	{ 0x01, 0x00 },

	{ 0x05, 0x48 },

	{ 0x02, 0x80 },

	/* enable and disable PLL */

	{ 0x02, 0xbc },

	{ 0x03, 0x02 },

	{ },

};



static struct cdce_reg cdce_y1_27000[] = {

	{ 0x13, 0x00 },

	{ 0x18, 0x00 },

	{ 0x19, 0x40 },

	{ 0x1a, 0x02 },

	{ 0x1b, 0x08 },

	{ 0x1c, 0x00 },

	{ 0x1d, 0x40 },

	{ 0x1e, 0x02 },

	{ 0x1f, 0x08 },

	{ 0x15, 0x02 },

	{ 0x14, 0xed },

	{ 0x16, 0x01 },

	{ 0x17, 0x01 },

	{ 0x01, 0x00 },

	{ 0x05, 0x50 },

	{ 0x02, 0xb4 },

	{ 0x03, 0x01 },

	{ },

};



static struct cdce_freq cdce_y1_freqs[] = {

	CDCE_FREQ_TABLE_ENTRY(1, 148500),

	CDCE_FREQ_TABLE_ENTRY(1, 74250),

	CDCE_FREQ_TABLE_ENTRY(1, 27000),

};



static struct cdce_reg cdce_y5_13500[] = {

	{ 0x27, 0x08 },

	{ 0x28, 0x00 },

	{ 0x29, 0x40 },

	{ 0x2a, 0x02 },

	{ 0x2b, 0x08 },

	{ 0x24, 0x6f },

	{ },

};



static struct cdce_reg cdce_y5_16875[] = {

	{ 0x27, 0x08 },

	{ 0x28, 0x9f },

	{ 0x29, 0xb0 },

	{ 0x2a, 0x02 },

	{ 0x2b, 0x89 },

	{ 0x24, 0x6f },

	{ },

};



static struct cdce_reg cdce_y5_27000[] = {

	{ 0x27, 0x04 },

	{ 0x28, 0x00 },

	{ 0x29, 0x40 },

	{ 0x2a, 0x02 },

	{ 0x2b, 0x08 },

	{ 0x24, 0x6f },

	{ },

};

static struct cdce_reg cdce_y5_54000[] = {

	{ 0x27, 0x04 },

	{ 0x28, 0xff },

	{ 0x29, 0x80 },

	{ 0x2a, 0x02 },

	{ 0x2b, 0x07 },

	{ 0x24, 0x6f },

	{ },

};



static struct cdce_reg cdce_y5_81000[] = {

	{ 0x27, 0x02 },

	{ 0x28, 0xbf },

	{ 0x29, 0xa0 },

	{ 0x2a, 0x03 },

	{ 0x2b, 0x0a },

	{ 0x24, 0x6f },

	{ },

};



static struct cdce_freq cdce_y5_freqs[] = {

	CDCE_FREQ_TABLE_ENTRY(5, 13500),

	CDCE_FREQ_TABLE_ENTRY(5, 16875),

	CDCE_FREQ_TABLE_ENTRY(5, 27000),

	CDCE_FREQ_TABLE_ENTRY(5, 54000),

	CDCE_FREQ_TABLE_ENTRY(5, 81000),

};





static struct cdce_output output_list[] = {

	[1]	= { cdce_y1_freqs, ARRAY_SIZE(cdce_y1_freqs) },

	[5]	= { cdce_y5_freqs, ARRAY_SIZE(cdce_y5_freqs) },

};



int cdce_set_rate(struct clk *clk, unsigned long rate)

{

	int i, ret = 0;

	struct cdce_freq *freq_table = output_list[clk->lpsc].freq_table;

	struct cdce_reg  *regs = NULL;



	if (!cdce_i2c_client)

		return -ENODEV;



	if (!freq_table)

		return -EINVAL;



	for (i = 0; i < output_list[clk->lpsc].size; i++) {

		if (freq_table[i].frequency == rate / 1000) {

			regs = freq_table[i].reglist;

			break;

		}

	}



	if (!regs)

		return -EINVAL;



	mutex_lock(&cdce_mutex);

	for (i = 0; regs[i].addr; i++) {

		ret = i2c_smbus_write_byte_data(cdce_i2c_client,

					regs[i].addr | 0x80, regs[i].val);

		if (ret)

			break;

	}

	mutex_unlock(&cdce_mutex);



	if (!ret)

		clk->rate = rate;



	return ret;

}



static int cdce_probe(struct i2c_client *client,

					const struct i2c_device_id *id)

{

	cdce_i2c_client = client;

	return 0;

}



static int cdce_remove(struct i2c_client *client)

{

	cdce_i2c_client = NULL;

	return 0;

}



static const struct i2c_device_id cdce_id[] = {

	{"cdce949", 0},

	{},

};

MODULE_DEVICE_TABLE(i2c, cdce_id);



static struct i2c_driver cdce_driver = {

	.driver = {

		.owner	= THIS_MODULE,

		.name	= "cdce949",

	},

	.probe		= cdce_probe,

	.remove		= cdce_remove,

	.id_table	= cdce_id,

};



static int __init cdce_init(void)

{

	return i2c_add_driver(&cdce_driver);

}

subsys_initcall(cdce_init);



static void __exit cdce_exit(void)

{

	i2c_del_driver(&cdce_driver);

}

module_exit(cdce_exit);



MODULE_AUTHOR("Texas Instruments");

MODULE_DESCRIPTION("CDCE949 clock synthesizer driver");

MODULE_LICENSE("GPL v2");

arch/arm/mach-davinci/include/mach/cdce949.h

deleted100644 → 0
+0 −19
Original line number Diff line number Diff line 
/*

 * TI CDCE949 off-chip clock synthesizer support

 *

 * 2009 (C) Texas Instruments, Inc. http://www.ti.com/

 *

 * This file is licensed under the terms of the GNU General Public License

 * version 2. This program is licensed "as is" without any warranty of any

 * kind, whether express or implied.

 */

#ifndef _MACH_DAVINCI_CDCE949_H

#define _MACH_DAVINCI_CDCE949_H



#include <linux/clk.h>



#include <mach/clock.h>



int cdce_set_rate(struct clk *clk, unsigned long rate);



#endif