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authorTony Lindgren <tony@atomide.com>2005-11-10 14:26:50 +0000
committerRussell King <rmk+kernel@arm.linux.org.uk>2005-11-10 14:26:50 +0000
commit1a8bfa1eb998af6e650ad26201f7cae9f2a2fdc8 (patch)
tree1a9748171dbfe89a59e621009c32b5bb12d10f81 /arch/arm/plat-omap/mux.c
parent3179a019391f0f8081245fd564a5f1be308ba64f (diff)
[ARM] 3142/1: OMAP 2/5: Update files common to omap1 and omap2
Patch from Tony Lindgren This patch syncs the mainline kernel with linux-omap tree. The highlights of the patch are: - Serial port and framebuffer init improvments by Imre Deak - Common omap pin mux framework by Tony Lindgren - Common omap clock framework by Tony Lindren Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/plat-omap/mux.c')
-rw-r--r--arch/arm/plat-omap/mux.c65
1 files changed, 51 insertions, 14 deletions
diff --git a/arch/arm/plat-omap/mux.c b/arch/arm/plat-omap/mux.c
index 64482040f89..8c1c016aa68 100644
--- a/arch/arm/plat-omap/mux.c
+++ b/arch/arm/plat-omap/mux.c
@@ -3,7 +3,7 @@
*
* Utility to set the Omap MUX and PULL_DWN registers from a table in mux.h
*
- * Copyright (C) 2003 Nokia Corporation
+ * Copyright (C) 2003 - 2005 Nokia Corporation
*
* Written by Tony Lindgren <tony.lindgren@nokia.com>
*
@@ -25,38 +25,74 @@
#include <linux/config.h>
#include <linux/module.h>
#include <linux/init.h>
+#include <linux/kernel.h>
#include <asm/system.h>
#include <asm/io.h>
#include <linux/spinlock.h>
-
-#define __MUX_C__
#include <asm/arch/mux.h>
#ifdef CONFIG_OMAP_MUX
+#define OMAP24XX_L4_BASE 0x48000000
+#define OMAP24XX_PULL_ENA (1 << 3)
+#define OMAP24XX_PULL_UP (1 << 4)
+
+static struct pin_config * pin_table;
+static unsigned long pin_table_sz;
+
+extern struct pin_config * omap730_pins;
+extern struct pin_config * omap1xxx_pins;
+extern struct pin_config * omap24xx_pins;
+
+int __init omap_mux_register(struct pin_config * pins, unsigned long size)
+{
+ pin_table = pins;
+ pin_table_sz = size;
+
+ return 0;
+}
+
/*
* Sets the Omap MUX and PULL_DWN registers based on the table
*/
-int __init_or_module
-omap_cfg_reg(const reg_cfg_t reg_cfg)
+int __init_or_module omap_cfg_reg(const unsigned long index)
{
static DEFINE_SPINLOCK(mux_spin_lock);
unsigned long flags;
- reg_cfg_set *cfg;
+ struct pin_config *cfg;
unsigned int reg_orig = 0, reg = 0, pu_pd_orig = 0, pu_pd = 0,
pull_orig = 0, pull = 0;
unsigned int mask, warn = 0;
- if (cpu_is_omap7xx())
- return 0;
+ if (!pin_table)
+ BUG();
- if (reg_cfg > ARRAY_SIZE(reg_cfg_table)) {
- printk(KERN_ERR "MUX: reg_cfg %d\n", reg_cfg);
- return -EINVAL;
+ if (index >= pin_table_sz) {
+ printk(KERN_ERR "Invalid pin mux index: %lu (%lu)\n",
+ index, pin_table_sz);
+ dump_stack();
+ return -ENODEV;
}
- cfg = (reg_cfg_set *)&reg_cfg_table[reg_cfg];
+ cfg = (struct pin_config *)&pin_table[index];
+ if (cpu_is_omap24xx()) {
+ u8 reg = 0;
+
+ reg |= cfg->mask & 0x7;
+ if (cfg->pull_val)
+ reg |= OMAP24XX_PULL_ENA;
+ if(cfg->pu_pd_val)
+ reg |= OMAP24XX_PULL_UP;
+#ifdef CONFIG_OMAP_MUX_DEBUG
+ printk("Muxing %s (0x%08x): 0x%02x -> 0x%02x\n",
+ cfg->name, OMAP24XX_L4_BASE + cfg->mux_reg,
+ omap_readb(OMAP24XX_L4_BASE + cfg->mux_reg), reg);
+#endif
+ omap_writeb(reg, OMAP24XX_L4_BASE + cfg->mux_reg);
+
+ return 0;
+ }
/* Check the mux register in question */
if (cfg->mux_reg) {
@@ -157,7 +193,8 @@ omap_cfg_reg(const reg_cfg_t reg_cfg)
return 0;
#endif
}
-
EXPORT_SYMBOL(omap_cfg_reg);
-
+#else
+#define omap_mux_init() do {} while(0)
+#define omap_cfg_reg(x) do {} while(0)
#endif /* CONFIG_OMAP_MUX */