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ARM: OMAP2: Clean-up mux code
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Misc clean-up for the mux code and remove some unnecessary
ifdefs. Patch changes debug function so it can be used on
both 24xx and 34xx.

Changes are mostly for omap2, but patch also cleans up some
omap1 and common mux code.

Signed-off-by: Tony Lindgren <tony@atomide.com>
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Tony Lindgren committed Apr 14, 2008
1 parent f7337a1 commit 9330899
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Showing 4 changed files with 63 additions and 51 deletions.
28 changes: 15 additions & 13 deletions arch/arm/mach-omap1/mux.c
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Original file line number Diff line number Diff line change
Expand Up @@ -3,9 +3,9 @@
*
* OMAP1 pin multiplexing configurations
*
* Copyright (C) 2003 - 2005 Nokia Corporation
* Copyright (C) 2003 - 2008 Nokia Corporation
*
* Written by Tony Lindgren <tony.lindgren@nokia.com>
* Written by Tony Lindgren
*
* 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
Expand Down Expand Up @@ -35,7 +35,7 @@
static struct omap_mux_cfg arch_mux_cfg;

#ifdef CONFIG_ARCH_OMAP730
struct pin_config __initdata_or_module omap730_pins[] = {
static struct pin_config __initdata_or_module omap730_pins[] = {
MUX_CFG_730("E2_730_KBR0", 12, 21, 0, 20, 1, 0)
MUX_CFG_730("J7_730_KBR1", 12, 25, 0, 24, 1, 0)
MUX_CFG_730("E1_730_KBR2", 12, 29, 0, 28, 1, 0)
Expand All @@ -51,10 +51,14 @@ MUX_CFG_730("AA17_730_USB_DM", 2, 21, 0, 20, 0, 0)
MUX_CFG_730("W16_730_USB_PU_EN", 2, 25, 0, 24, 0, 0)
MUX_CFG_730("W17_730_USB_VBUSI", 2, 29, 0, 28, 0, 0)
};
#endif
#define OMAP730_PINS_SZ ARRAY_SIZE(omap730_pins)
#else
#define omap730_pins NULL
#define OMAP730_PINS_SZ 0
#endif /* CONFIG_ARCH_OMAP730 */

#if defined(CONFIG_ARCH_OMAP15XX) || defined(CONFIG_ARCH_OMAP16XX)
struct pin_config __initdata_or_module omap1xxx_pins[] = {
static struct pin_config __initdata_or_module omap1xxx_pins[] = {
/*
* description mux mode mux pull pull pull pu_pd pu dbg
* reg offset mode reg bit ena reg
Expand Down Expand Up @@ -308,8 +312,11 @@ MUX_CFG("Y12_1610_CCP_CLKP", 8, 18, 6, 1, 24, 1, 1, 0, 0)
MUX_CFG("W13_1610_CCP_CLKM", 9, 0, 6, 1, 28, 1, 1, 0, 0)
MUX_CFG("W14_1610_CCP_DATAP", 9, 24, 6, 2, 4, 1, 2, 0, 0)
MUX_CFG("Y14_1610_CCP_DATAM", 9, 21, 6, 2, 3, 1, 2, 0, 0)

};
#define OMAP1XXX_PINS_SZ ARRAY_SIZE(omap1xxx_pins)
#else
#define omap1xxx_pins NULL
#define OMAP1XXX_PINS_SZ 0
#endif /* CONFIG_ARCH_OMAP15XX || CONFIG_ARCH_OMAP16XX */

int __init_or_module omap1_cfg_reg(const struct pin_config *cfg)
Expand Down Expand Up @@ -422,22 +429,17 @@ int __init_or_module omap1_cfg_reg(const struct pin_config *cfg)

int __init omap1_mux_init(void)
{

#ifdef CONFIG_ARCH_OMAP730
if (cpu_is_omap730()) {
arch_mux_cfg.pins = omap730_pins;
arch_mux_cfg.size = ARRAY_SIZE(omap730_pins);
arch_mux_cfg.size = OMAP730_PINS_SZ;
arch_mux_cfg.cfg_reg = omap1_cfg_reg;
}
#endif

#if defined(CONFIG_ARCH_OMAP15XX) || defined(CONFIG_ARCH_OMAP16XX)
if (cpu_is_omap15xx() || cpu_is_omap16xx()) {
arch_mux_cfg.pins = omap1xxx_pins;
arch_mux_cfg.size = ARRAY_SIZE(omap1xxx_pins);
arch_mux_cfg.size = OMAP1XXX_PINS_SZ;
arch_mux_cfg.cfg_reg = omap1_cfg_reg;
}
#endif

return omap_mux_register(&arch_mux_cfg);
}
Expand Down
69 changes: 43 additions & 26 deletions arch/arm/mach-omap2/mux.c
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Original file line number Diff line number Diff line change
@@ -1,11 +1,12 @@
/*
* linux/arch/arm/mach-omap2/mux.c
*
* OMAP1 pin multiplexing configurations
* OMAP2 pin multiplexing configurations
*
* Copyright (C) 2003 - 2005 Nokia Corporation
* Copyright (C) 2004 - 2008 Texas Instruments Inc.
* Copyright (C) 2003 - 2008 Nokia Corporation
*
* Written by Tony Lindgren <tony.lindgren@nokia.com>
* Written by Tony Lindgren
*
* 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
Expand Down Expand Up @@ -36,7 +37,8 @@ static struct omap_mux_cfg arch_mux_cfg;

/* NOTE: See mux.h for the enumeration */

struct pin_config __initdata_or_module omap24xx_pins[] = {
#ifdef CONFIG_ARCH_OMAP24XX
static struct pin_config __initdata_or_module omap24xx_pins[] = {
/*
* description mux mux pull pull debug
* offset mode ena type
Expand Down Expand Up @@ -209,54 +211,69 @@ MUX_CFG_24XX("AE13_2430_MCBSP2_DX_OFF", 0x0130, 0, 0, 0, 1)
MUX_CFG_24XX("AD13_2430_MCBSP2_DR_OFF", 0x0131, 0, 0, 0, 1)
};

#ifdef CONFIG_ARCH_OMAP24XX
#define OMAP24XX_PINS_SZ ARRAY_SIZE(omap24xx_pins)

#else
#define omap24xx_pins NULL
#define OMAP24XX_PINS_SZ 0
#endif /* CONFIG_ARCH_OMAP24XX */

#define OMAP24XX_L4_BASE 0x48000000
#define OMAP24XX_PULL_ENA (1 << 3)
#define OMAP24XX_PULL_UP (1 << 4)

/* REVISIT: Convert this code to use ctrl_{read,write}_reg */
#if defined(CONFIG_OMAP_MUX_DEBUG) || defined(CONFIG_OMAP_MUX_WARNINGS)
void __init_or_module omap2_cfg_debug(const struct pin_config *cfg, u8 reg)
{
u16 orig;
u8 warn = 0, debug = 0;

orig = omap_readb(OMAP24XX_L4_BASE + cfg->mux_reg);

#ifdef CONFIG_OMAP_MUX_DEBUG
debug = cfg->debug;
#endif
warn = (orig != reg);
if (debug || warn)
printk(KERN_WARNING
"MUX: setup %s (0x%08x): 0x%02x -> 0x%02x\n",
cfg->name, omap_readb(OMAP24XX_L4_BASE + cfg->mux_reg));
}
#else
#define omap2_cfg_debug(x, y) do {} while (0)
#endif

#ifdef CONFIG_ARCH_OMAP24XX
int __init_or_module omap24xx_cfg_reg(const struct pin_config *cfg)
{
static DEFINE_SPINLOCK(mux_spin_lock);
unsigned long flags;
u8 reg = 0;
unsigned int warn = 0;

spin_lock_irqsave(&mux_spin_lock, flags);
reg |= cfg->mask & 0x7;
if (cfg->pull_val)
reg |= OMAP24XX_PULL_ENA;
if(cfg->pu_pd_val)
if (cfg->pu_pd_val)
reg |= OMAP24XX_PULL_UP;
#if defined(CONFIG_OMAP_MUX_DEBUG) || defined(CONFIG_OMAP_MUX_WARNINGS)
{
u8 orig = omap_readb(OMAP24XX_L4_BASE + cfg->mux_reg);
u8 debug = 0;

#ifdef CONFIG_OMAP_MUX_DEBUG
debug = cfg->debug;
#endif
warn = (orig != reg);
if (debug || warn)
printk("MUX: setup %s (0x%08x): 0x%02x -> 0x%02x\n",
cfg->name, OMAP24XX_L4_BASE + cfg->mux_reg,
orig, reg);
}
#endif
omap2_cfg_debug(cfg, reg);
omap_writeb(reg, OMAP24XX_L4_BASE + cfg->mux_reg);
spin_unlock_irqrestore(&mux_spin_lock, flags);

return 0;
}
#else
#define omap24xx_cfg_reg 0
#endif

int __init omap2_mux_init(void)
{

#ifdef CONFIG_ARCH_OMAP24XX
if (cpu_is_omap24xx()) {
arch_mux_cfg.pins = omap24xx_pins;
arch_mux_cfg.size = ARRAY_SIZE(omap24xx_pins);
arch_mux_cfg.size = OMAP24XX_PINS_SZ;
arch_mux_cfg.cfg_reg = omap24xx_cfg_reg;
}
#endif

return omap_mux_register(&arch_mux_cfg);
}
Expand Down
4 changes: 2 additions & 2 deletions arch/arm/plat-omap/mux.c
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Original file line number Diff line number Diff line change
Expand Up @@ -3,9 +3,9 @@
*
* Utility to set the Omap MUX and PULL_DWN registers from a table in mux.h
*
* Copyright (C) 2003 - 2005 Nokia Corporation
* Copyright (C) 2003 - 2008 Nokia Corporation
*
* Written by Tony Lindgren <tony.lindgren@nokia.com>
* Written by Tony Lindgren
*
* 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
Expand Down
13 changes: 3 additions & 10 deletions include/asm-arm/arch-omap/mux.h
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Original file line number Diff line number Diff line change
Expand Up @@ -4,9 +4,10 @@
* Table of the Omap register configurations for the FUNC_MUX and
* PULL_DWN combinations.
*
* Copyright (C) 2003 - 2005 Nokia Corporation
* Copyright (C) 2004 - 2008 Texas Instruments Inc.
* Copyright (C) 2003 - 2008 Nokia Corporation
*
* Written by Tony Lindgren <tony.lindgren@nokia.com>
* Written by Tony Lindgren
*
* 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
Expand All @@ -27,14 +28,6 @@
* - W8 = ball
* - 1610 = 1510 or 1610, none if common for both 1510 and 1610
* - MMC2_DAT0 = function
*
* Change log:
* Added entry for the I2C interface. (02Feb 2004)
* Copyright (C) 2004 Texas Instruments
*
* Added entry for the keypad and uwire CS1. (09Mar 2004)
* Copyright (C) 2004 Texas Instruments
*
*/

#ifndef __ASM_ARCH_MUX_H
Expand Down

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