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MIPS: Alchemy: remove old clock support 

With the clock framework in place, remove unused functions and bits,
and drop the CLK_IGNORE_UNUSED flag, which is now unneeded.

Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com>
Cc: Linux-MIPS <linux-mips@linux-mips.org>
Patchwork: https://patchwork.linux-mips.org/patch/7473/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
hifive-unleashed-5.1
Manuel Lauss 2014-07-23 16:36:57 +02:00 committed by Ralf Baechle
parent b6507596df
commit 72e1e2a30f
5 changed files with 5 additions and 177 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/mips/alchemy/common/Makefile
View File

@ -5,7 +5,7 @@
# Makefile for the Alchemy Au1xx0 CPUs, generic files.
#
obj-y += prom.o time.o clock.o clocks.o platform.o power.o \
obj-y += prom.o time.o clock.o platform.o power.o \
setup.o sleeper.o dma.o dbdma.o vss.o irq.o usb.o
# optional gpiolib support

10
arch/mips/alchemy/common/clock.c
View File

@ -151,7 +151,7 @@ static struct clk __init *alchemy_clk_setup_cpu(const char *parent_name,
id.name = ALCHEMY_CPU_CLK;
id.parent_names = &parent_name;
id.num_parents = 1;
id.flags = CLK_IS_BASIC | CLK_IGNORE_UNUSED;
id.flags = CLK_IS_BASIC;
id.ops = &alchemy_clkops_cpu;
h->init = &id;
@ -236,7 +236,7 @@ static struct clk __init *alchemy_clk_setup_aux(const char *parent_name,
id.name = name;
id.parent_names = &parent_name;
id.num_parents = 1;
id.flags = CLK_GET_RATE_NOCACHE | CLK_IGNORE_UNUSED;
id.flags = CLK_GET_RATE_NOCACHE;
id.ops = &alchemy_clkops_aux;
a->reg = reg;
@ -743,8 +743,7 @@ static int __init alchemy_clk_init_fgens(int ctype)
default:
return -ENODEV;
}
id.flags = CLK_SET_RATE_PARENT | CLK_GET_RATE_NOCACHE |
CLK_IGNORE_UNUSED;
id.flags = CLK_SET_RATE_PARENT | CLK_GET_RATE_NOCACHE;
a = kzalloc((sizeof(*a)) * 6, GFP_KERNEL);
if (!a)
@ -942,8 +941,7 @@ static int __init alchemy_clk_setup_imux(int ctype)
id.ops = &alchemy_clkops_csrc;
id.parent_names = (const char **)alchemy_clk_csrc_parents;
id.num_parents = 7;
id.flags = CLK_SET_RATE_PARENT | CLK_GET_RATE_NOCACHE |
CLK_IGNORE_UNUSED;
id.flags = CLK_SET_RATE_PARENT | CLK_GET_RATE_NOCACHE;
dt = alchemy_csrc_dt1;
switch (ctype) {

86
arch/mips/alchemy/common/clocks.c
View File

@ -1,86 +0,0 @@
/*
* BRIEF MODULE DESCRIPTION
* Simple Au1xx0 clocks routines.
*
* Copyright 2001, 2008 MontaVista Software Inc.
* Author: MontaVista Software, Inc. <source@mvista.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.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/module.h>
#include <linux/spinlock.h>
#include <asm/time.h>
#include <asm/mach-au1x00/au1000.h>
/*
* I haven't found anyone that doesn't use a 12 MHz source clock,
* but just in case.....
*/
#define AU1000_SRC_CLK 12000000
static unsigned int au1x00_clock; /* Hz */
/*
* Set the au1000_clock
*/
void set_au1x00_speed(unsigned int new_freq)
{
au1x00_clock = new_freq;
}
unsigned int get_au1x00_speed(void)
{
return au1x00_clock;
}
EXPORT_SYMBOL(get_au1x00_speed);
/*
* We read the real processor speed from the PLL. This is important
* because it is more accurate than computing it from the 32 KHz
* counter, if it exists. If we don't have an accurate processor
* speed, all of the peripherals that derive their clocks based on
* this advertised speed will introduce error and sometimes not work
* properly. This function is further convoluted to still allow configurations
* to do that in case they have really, really old silicon with a
* write-only PLL register. -- Dan
*/
unsigned long au1xxx_calc_clock(void)
{
unsigned long cpu_speed;
/*
* On early Au1000, sys_cpupll was write-only. Since these
* silicon versions of Au1000 are not sold by AMD, we don't bend
* over backwards trying to determine the frequency.
*/
if (au1xxx_cpu_has_pll_wo())
cpu_speed = 396000000;
else
cpu_speed = (alchemy_rdsys(AU1000_SYS_CPUPLL) & 0x3f) * AU1000_SRC_CLK;
/* On Alchemy CPU:counter ratio is 1:1 */
mips_hpt_frequency = cpu_speed;
set_au1x00_speed(cpu_speed);
return cpu_speed;
}

15
arch/mips/alchemy/common/setup.c
View File

@ -27,12 +27,9 @@
#include <linux/init.h>
#include <linux/ioport.h>
#include <linux/jiffies.h>
#include <linux/module.h>
#include <asm/dma-coherence.h>
#include <asm/mipsregs.h>
#include <asm/time.h>
#include <au1000.h>
@ -41,18 +38,6 @@ extern void set_cpuspec(void);
void __init plat_mem_setup(void)
{
unsigned long est_freq;
/* determine core clock */
est_freq = au1xxx_calc_clock();
est_freq += 5000; /* round */
est_freq -= est_freq % 10000;
printk(KERN_INFO "(PRId %08x) @ %lu.%02lu MHz\n", read_c0_prid(),
est_freq / 1000000, ((est_freq % 1000000) * 100) / 1000000);
/* this is faster than wasting cycles trying to approximate it */
preset_lpj = (est_freq >> 1) / HZ;
if (au1xxx_cpu_needs_config_od())
/* Various early Au1xx0 errata corrected by this */
set_c0_config(1 << 19); /* Set Config[OD] */

69
arch/mips/include/asm/mach-au1x00/au1000.h
View File

@ -470,72 +470,8 @@
/* Clock Controller */
#define AU1000_SYS_FREQCTRL0 0x20
# define SYS_FC_FRDIV2_BIT 22
# define SYS_FC_FRDIV2_MASK (0xff << SYS_FC_FRDIV2_BIT)
# define SYS_FC_FE2 (1 << 21)
# define SYS_FC_FS2 (1 << 20)
# define SYS_FC_FRDIV1_BIT 12
# define SYS_FC_FRDIV1_MASK (0xff << SYS_FC_FRDIV1_BIT)
# define SYS_FC_FE1 (1 << 11)
# define SYS_FC_FS1 (1 << 10)
# define SYS_FC_FRDIV0_BIT 2
# define SYS_FC_FRDIV0_MASK (0xff << SYS_FC_FRDIV0_BIT)
# define SYS_FC_FE0 (1 << 1)
# define SYS_FC_FS0 (1 << 0)
#define AU1000_SYS_FREQCTRL1 0x24
# define SYS_FC_FRDIV5_BIT 22
# define SYS_FC_FRDIV5_MASK (0xff << SYS_FC_FRDIV5_BIT)
# define SYS_FC_FE5 (1 << 21)
# define SYS_FC_FS5 (1 << 20)
# define SYS_FC_FRDIV4_BIT 12
# define SYS_FC_FRDIV4_MASK (0xff << SYS_FC_FRDIV4_BIT)
# define SYS_FC_FE4 (1 << 11)
# define SYS_FC_FS4 (1 << 10)
# define SYS_FC_FRDIV3_BIT 2
# define SYS_FC_FRDIV3_MASK (0xff << SYS_FC_FRDIV3_BIT)
# define SYS_FC_FE3 (1 << 1)
# define SYS_FC_FS3 (1 << 0)
#define AU1000_SYS_CLKSRC 0x28
# define SYS_CS_ME1_BIT 27
# define SYS_CS_ME1_MASK (0x7 << SYS_CS_ME1_BIT)
# define SYS_CS_DE1 (1 << 26)
# define SYS_CS_CE1 (1 << 25)
# define SYS_CS_ME0_BIT 22
# define SYS_CS_ME0_MASK (0x7 << SYS_CS_ME0_BIT)
# define SYS_CS_DE0 (1 << 21)
# define SYS_CS_CE0 (1 << 20)
# define SYS_CS_MI2_BIT 17
# define SYS_CS_MI2_MASK (0x7 << SYS_CS_MI2_BIT)
# define SYS_CS_DI2 (1 << 16)
# define SYS_CS_CI2 (1 << 15)
# define SYS_CS_ML_BIT 7
# define SYS_CS_ML_MASK (0x7 << SYS_CS_ML_BIT)
# define SYS_CS_DL (1 << 6)
# define SYS_CS_CL (1 << 5)
# define SYS_CS_MUH_BIT 12
# define SYS_CS_MUH_MASK (0x7 << SYS_CS_MUH_BIT)
# define SYS_CS_DUH (1 << 11)
# define SYS_CS_CUH (1 << 10)
# define SYS_CS_MUD_BIT 7
# define SYS_CS_MUD_MASK (0x7 << SYS_CS_MUD_BIT)
# define SYS_CS_DUD (1 << 6)
# define SYS_CS_CUD (1 << 5)
# define SYS_CS_MIR_BIT 2
# define SYS_CS_MIR_MASK (0x7 << SYS_CS_MIR_BIT)
# define SYS_CS_DIR (1 << 1)
# define SYS_CS_CIR (1 << 0)
# define SYS_CS_MUX_AUX 0x1
# define SYS_CS_MUX_FQ0 0x2
# define SYS_CS_MUX_FQ1 0x3
# define SYS_CS_MUX_FQ2 0x4
# define SYS_CS_MUX_FQ3 0x5
# define SYS_CS_MUX_FQ4 0x6
# define SYS_CS_MUX_FQ5 0x7
#define AU1000_SYS_CPUPLL 0x60
#define AU1000_SYS_AUXPLL 0x64
#define AU1300_SYS_AUXPLL2 0x68
@ -841,11 +777,6 @@ static inline int alchemy_get_macs(int type)
return 0;
}
/* arch/mips/au1000/common/clocks.c */
extern void set_au1x00_speed(unsigned int new_freq);
extern unsigned int get_au1x00_speed(void);
extern unsigned long au1xxx_calc_clock(void);
/* PM: arch/mips/alchemy/common/sleeper.S, power.c, irq.c */
void alchemy_sleep_au1000(void);
void alchemy_sleep_au1550(void);