diff options
Diffstat (limited to 'arch/arm/mach-davinci')
| -rw-r--r-- | arch/arm/mach-davinci/Makefile | 2 | ||||
| -rw-r--r-- | arch/arm/mach-davinci/board-dm646x-evm.c | 31 | ||||
| -rw-r--r-- | arch/arm/mach-davinci/cdce949.c | 295 | ||||
| -rw-r--r-- | arch/arm/mach-davinci/include/mach/cdce949.h | 19 |
4 files changed, 1 insertions, 346 deletions
diff --git a/arch/arm/mach-davinci/Makefile b/arch/arm/mach-davinci/Makefile index 2204239ed243..2e3464b8bab4 100644 --- a/arch/arm/mach-davinci/Makefile +++ b/arch/arm/mach-davinci/Makefile @@ -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 diff --git a/arch/arm/mach-davinci/board-dm646x-evm.c b/arch/arm/mach-davinci/board-dm646x-evm.c index ae129bc49273..846a84ddc28e 100644 --- a/arch/arm/mach-davinci/board-dm646x-evm.c +++ b/arch/arm/mach-davinci/board-dm646x-evm.c @@ -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" diff --git a/arch/arm/mach-davinci/cdce949.c b/arch/arm/mach-davinci/cdce949.c deleted file mode 100644 index abafb92031c0..000000000000 --- a/arch/arm/mach-davinci/cdce949.c +++ /dev/null @@ -1,295 +0,0 @@ -/* - * 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"); diff --git a/arch/arm/mach-davinci/include/mach/cdce949.h b/arch/arm/mach-davinci/include/mach/cdce949.h deleted file mode 100644 index c73331fae341..000000000000 --- a/arch/arm/mach-davinci/include/mach/cdce949.h +++ /dev/null @@ -1,19 +0,0 @@ -/* - * 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 |