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authorEugene Konev <ejka@openwrt.org>2007-03-25 05:42:16 +0000
committerEugene Konev <ejka@openwrt.org>2007-03-25 05:42:16 +0000
commit8f80d431ddbbc5659b7f6fd65a0549db3b5ab321 (patch)
tree1bd93c920bb803af8b0d671b603dcebd74bad5da /target/linux/ar7-2.6/files
parentc931a35b7663c72ed2f3aee13ffb04229767584d (diff)
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ar7: clocks setup (prerequisite for dsl/usb) and misc cleanups.
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@6693 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/ar7-2.6/files')
-rw-r--r--target/linux/ar7-2.6/files/arch/mips/ar7/Makefile1
-rw-r--r--target/linux/ar7-2.6/files/arch/mips/ar7/clock.c362
-rw-r--r--target/linux/ar7-2.6/files/arch/mips/ar7/prom.c8
-rw-r--r--target/linux/ar7-2.6/files/arch/mips/ar7/setup.c11
-rw-r--r--target/linux/ar7-2.6/files/drivers/char/watchdog/ar7_wdt.c9
-rw-r--r--target/linux/ar7-2.6/files/drivers/mtd/ar7part.c3
-rw-r--r--target/linux/ar7-2.6/files/include/asm-mips/ar7/ar7.h84
-rw-r--r--target/linux/ar7-2.6/files/include/asm-mips/ar7/gpio.h14
8 files changed, 436 insertions, 56 deletions
diff --git a/target/linux/ar7-2.6/files/arch/mips/ar7/Makefile b/target/linux/ar7-2.6/files/arch/mips/ar7/Makefile
index 0771cfcf26..3ec49ee0d4 100644
--- a/target/linux/ar7-2.6/files/arch/mips/ar7/Makefile
+++ b/target/linux/ar7-2.6/files/arch/mips/ar7/Makefile
@@ -7,6 +7,7 @@ obj-y := \
time.o \
platform.o \
gpio.o \
+ clock.o \
vlynq.o
obj-$(CONFIG_PCI) += \
diff --git a/target/linux/ar7-2.6/files/arch/mips/ar7/clock.c b/target/linux/ar7-2.6/files/arch/mips/ar7/clock.c
new file mode 100644
index 0000000000..6da0c20aa9
--- /dev/null
+++ b/target/linux/ar7-2.6/files/arch/mips/ar7/clock.c
@@ -0,0 +1,362 @@
+/*
+ * $Id$
+ *
+ * Copyright (C) 2007 OpenWrt.org
+ *
+ * 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 program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <asm/addrspace.h>
+#include <asm/io.h>
+#include <asm/ar7/ar7.h>
+
+#define BOOT_PLL_SOURCE_MASK 0x3
+#define CPU_PLL_SOURCE_SHIFT 16
+#define BUS_PLL_SOURCE_SHIFT 14
+#define USB_PLL_SOURCE_SHIFT 18
+#define DSP_PLL_SOURCE_SHIFT 22
+#define BOOT_PLL_SOURCE_AFE 0
+#define BOOT_PLL_SOURCE_BUS 0
+#define BOOT_PLL_SOURCE_REF 1
+#define BOOT_PLL_SOURCE_XTAL 2
+#define BOOT_PLL_SOURCE_CPU 3
+#define BOOT_PLL_BYPASS 0x00000020
+#define BOOT_PLL_ASYNC_MODE 0x02000000
+#define BOOT_PLL_2TO1_MODE 0x00008000
+
+struct tnetd7300_clock {
+ u32 ctrl;
+#define PREDIV_MASK 0x001f0000
+#define PREDIV_SHIFT 16
+#define POSTDIV_MASK 0x0000001f
+ u32 unused1[3];
+ u32 pll;
+#define MUL_MASK 0x0000f000
+#define MUL_SHIFT 12
+#define PLL_MODE_MASK 0x00000001
+#define PLL_NDIV 0x00000800
+#define PLL_DIV 0x00000002
+#define PLL_STATUS 0x00000001
+ u32 unused2[3];
+} __attribute__ ((packed));
+
+struct tnetd7300_clocks {
+ struct tnetd7300_clock bus;
+ struct tnetd7300_clock cpu;
+ struct tnetd7300_clock usb;
+ struct tnetd7300_clock dsp;
+} __attribute__ ((packed));
+
+struct tnetd7200_clock {
+ u32 ctrl;
+ u32 unused1[3];
+#define DIVISOR_ENABLE_MASK 0x00008000
+ u32 mul;
+ u32 prediv;
+ u32 postdiv;
+ u32 unused2[7];
+ u32 cmd;
+ u32 status;
+ u32 cmden;
+ u32 padding[15];
+};
+
+struct tnetd7200_clocks {
+ struct tnetd7200_clock cpu;
+ struct tnetd7200_clock dsp;
+ struct tnetd7200_clock usb;
+};
+
+int ar7_afe_clock = 35328000;
+int ar7_ref_clock = 25000000;
+int ar7_xtal_clock = 24000000;
+
+int ar7_cpu_clock = 150000000;
+EXPORT_SYMBOL(ar7_cpu_clock);
+int ar7_bus_clock = 125000000;
+EXPORT_SYMBOL(ar7_bus_clock);
+int ar7_dsp_clock = 0;
+EXPORT_SYMBOL(ar7_dsp_clock);
+
+static int gcd(int x, int y)
+{
+ if (x > y)
+ return (x % y) ? gcd(y, x % y) : y;
+ return (y % x) ? gcd(x, y % x) : x;
+}
+
+static inline int ABS(int x)
+{
+ return (x >= 0) ? x : -x;
+}
+
+static void approximate(int base, int target, int *prediv,
+ int *postdiv, int *mul)
+{
+ int i, j, k, freq, res = target;
+ for (i = 1; i <= 16; i++) {
+ for (j = 1; j <= 32; j++) {
+ for (k = 1; k <= 32; k++) {
+ freq = ABS(base / j * i / k - target);
+ if (freq < res) {
+ res = freq;
+ *mul = i;
+ *prediv = j;
+ *postdiv = k;
+ }
+ }
+ }
+ }
+}
+
+static void calculate(int base, int target, int *prediv, int *postdiv,
+ int *mul)
+{
+ int tmp_gcd, tmp_base, tmp_freq;
+
+ for (*prediv = 1; *prediv <= 32; (*prediv)++) {
+ tmp_base = base / *prediv;
+ tmp_gcd = gcd(target, tmp_base);
+ *mul = target / tmp_gcd;
+ *postdiv = tmp_base / tmp_gcd;
+ if ((*mul < 1) || (*mul >= 16))
+ continue;
+ if ((*postdiv > 0) & (*postdiv <= 32))
+ break;
+ }
+
+ if (base / (*prediv) * (*mul) / (*postdiv) != target) {
+ approximate(base, target, prediv, postdiv, mul);
+ tmp_freq = base / (*prediv) * (*mul) / (*postdiv);
+ printk(KERN_WARNING
+ "Adjusted requested frequency %d to %d\n",
+ target, tmp_freq);
+ }
+
+ printk(KERN_DEBUG "Clocks: prediv: %d, postdiv: %d, mul: %d\n",
+ *prediv, *postdiv, *mul);
+}
+
+static int tnetd7300_dsp_clock(void)
+{
+ u32 didr1, didr2;
+ u8 rev = ar7_chip_rev();
+ didr1 = readl((void *)KSEG1ADDR(AR7_REGS_GPIO + 0x18));
+ didr2 = readl((void *)KSEG1ADDR(AR7_REGS_GPIO + 0x1c));
+ if (didr2 & (1 << 23))
+ return 0;
+ if ((rev >= 0x23) && (rev != 0x57))
+ return 250000000;
+ if ((((didr2 & 0x1fff) << 10) | ((didr1 & 0xffc00000) >> 22))
+ > 4208000)
+ return 250000000;
+ return 0;
+}
+
+static int tnetd7300_get_clock(u32 shift, struct tnetd7300_clock *clock,
+ u32 *bootcr, u32 bus_clock)
+{
+ int product;
+ int base_clock = ar7_ref_clock;
+ int prediv = ((clock->ctrl & PREDIV_MASK) >> PREDIV_SHIFT) + 1;
+ int postdiv = (clock->ctrl & POSTDIV_MASK) + 1;
+ int divisor = prediv * postdiv;
+ int mul = ((clock->pll & MUL_MASK) >> MUL_SHIFT) + 1;
+
+ switch ((*bootcr & (BOOT_PLL_SOURCE_MASK << shift)) >> shift) {
+ case BOOT_PLL_SOURCE_BUS:
+ base_clock = bus_clock;
+ break;
+ case BOOT_PLL_SOURCE_REF:
+ base_clock = ar7_ref_clock;
+ break;
+ case BOOT_PLL_SOURCE_XTAL:
+ base_clock = ar7_xtal_clock;
+ break;
+ case BOOT_PLL_SOURCE_CPU:
+ base_clock = ar7_cpu_clock;
+ break;
+ }
+
+ if (*bootcr & BOOT_PLL_BYPASS)
+ return base_clock / divisor;
+
+ if ((clock->pll & PLL_MODE_MASK) == 0)
+ return (base_clock >> (mul / 16 + 1)) / divisor;
+
+ if ((clock->pll & (PLL_NDIV | PLL_DIV)) == (PLL_NDIV | PLL_DIV)) {
+ product = (mul & 1) ?
+ (base_clock * mul) >> 1 :
+ (base_clock * (mul - 1)) >> 2;
+ return product / divisor;
+ }
+
+ if (mul == 16)
+ return base_clock / divisor;
+
+ return base_clock * mul / divisor;
+}
+
+static void tnetd7300_set_clock(u32 shift, struct tnetd7300_clock *clock,
+ u32 *bootcr, u32 frequency)
+{
+ volatile u32 status;
+ int prediv, postdiv, mul;
+ int base_clock = ar7_bus_clock;
+
+ switch ((*bootcr & (BOOT_PLL_SOURCE_MASK << shift)) >> shift) {
+ case BOOT_PLL_SOURCE_BUS:
+ base_clock = ar7_bus_clock;
+ break;
+ case BOOT_PLL_SOURCE_REF:
+ base_clock = ar7_ref_clock;
+ break;
+ case BOOT_PLL_SOURCE_XTAL:
+ base_clock = ar7_xtal_clock;
+ break;
+ case BOOT_PLL_SOURCE_CPU:
+ base_clock = ar7_cpu_clock;
+ break;
+ }
+
+ calculate(base_clock, frequency, &prediv, &postdiv, &mul);
+
+ clock->ctrl = ((prediv - 1) << PREDIV_SHIFT) | (postdiv - 1);
+ mdelay(1);
+ clock->pll = 4;
+ do {
+ status = clock->pll;
+ } while (status & PLL_STATUS);
+ clock->pll = ((mul - 1) << MUL_SHIFT) | (0xff << 3) | 0x0e;
+ mdelay(75);
+}
+
+static void __init tnetd7300_init_clocks(void)
+{
+ u32 *bootcr = (u32 *)ioremap_nocache(AR7_REGS_DCL, 4);
+ struct tnetd7300_clocks *clocks = (struct tnetd7300_clocks *)ioremap_nocache(AR7_REGS_POWER + 0x20, sizeof(struct tnetd7300_clocks));
+
+ ar7_bus_clock = tnetd7300_get_clock(BUS_PLL_SOURCE_SHIFT,
+ &clocks->bus, bootcr,
+ ar7_afe_clock);
+
+ if (*bootcr & BOOT_PLL_ASYNC_MODE) {
+ ar7_cpu_clock = tnetd7300_get_clock(CPU_PLL_SOURCE_SHIFT,
+ &clocks->cpu,
+ bootcr, ar7_afe_clock);
+ } else {
+ ar7_cpu_clock = ar7_bus_clock;
+ }
+
+ tnetd7300_set_clock(USB_PLL_SOURCE_SHIFT, &clocks->usb,
+ bootcr, 48000000);
+
+ if (ar7_dsp_clock == 250000000)
+ tnetd7300_set_clock(DSP_PLL_SOURCE_SHIFT, &clocks->dsp,
+ bootcr, ar7_dsp_clock);
+
+ iounmap(clocks);
+ iounmap(bootcr);
+}
+
+static int tnetd7200_get_clock(int base, struct tnetd7200_clock *clock,
+ u32 *bootcr, u32 bus_clock)
+{
+ int divisor = ((clock->prediv & 0x1f) + 1) *
+ ((clock->postdiv & 0x1f) + 1);
+
+ if (*bootcr & BOOT_PLL_BYPASS)
+ return base / divisor;
+
+ return base * ((clock->mul & 0xf) + 1) / divisor;
+}
+
+static void tnetd7200_set_clock(int base, struct tnetd7200_clock *clock,
+ u32 *bootcr, u32 frequency)
+{
+ volatile u32 status;
+ int prediv, postdiv, mul;
+
+ calculate(base, frequency, &prediv, &postdiv, &mul);
+
+ clock->ctrl = 0;
+ clock->prediv = DIVISOR_ENABLE_MASK | prediv;
+ clock->mul = mul;
+ mdelay(1);
+ do {
+ status = clock->status;
+ } while (status & PLL_STATUS);
+ clock->postdiv = DIVISOR_ENABLE_MASK | postdiv;
+ clock->cmden = 1;
+ clock->cmd = 1;
+ do {
+ status = clock->status;
+ } while (status & PLL_STATUS);
+ clock->ctrl = 1;
+}
+
+static void __init tnetd7200_init_clocks(void)
+{
+ u32 *bootcr = (u32 *)ioremap_nocache(AR7_REGS_DCL, 4);
+ struct tnetd7200_clocks *clocks = (struct tnetd7200_clocks *)ioremap_nocache(AR7_REGS_POWER + 0x80, sizeof(struct tnetd7200_clocks));
+
+ ar7_cpu_clock = tnetd7200_get_clock(ar7_afe_clock,
+ &clocks->cpu,
+ bootcr, ar7_afe_clock);
+
+ if (*bootcr & BOOT_PLL_ASYNC_MODE) {
+ ar7_bus_clock = 125000000;
+ } else {
+ if (*bootcr & BOOT_PLL_2TO1_MODE) {
+ ar7_bus_clock = ar7_cpu_clock / 2;
+ } else {
+ ar7_bus_clock = ar7_cpu_clock;
+ }
+ }
+
+ tnetd7200_set_clock(ar7_ref_clock * 5, &clocks->usb,
+ bootcr, 48000000);
+
+ if (ar7_dsp_clock == 250000000)
+ tnetd7200_set_clock(ar7_ref_clock, &clocks->dsp,
+ bootcr, ar7_dsp_clock);
+
+ iounmap(clocks);
+ iounmap(bootcr);
+}
+
+void __init ar7_init_clocks(void)
+{
+ switch (ar7_chip_id()) {
+ case AR7_CHIP_7100:
+ tnetd7200_init_clocks();
+ break;
+ case AR7_CHIP_7200:
+#warning FIXME: check revision
+ ar7_dsp_clock = 250000000;
+ tnetd7200_init_clocks();
+ break;
+ case AR7_CHIP_7300:
+ ar7_dsp_clock = tnetd7300_dsp_clock();
+ tnetd7300_init_clocks();
+ break;
+ default:
+ break;
+ }
+}
diff --git a/target/linux/ar7-2.6/files/arch/mips/ar7/prom.c b/target/linux/ar7-2.6/files/arch/mips/ar7/prom.c
index 7176be3022..e613164f06 100644
--- a/target/linux/ar7-2.6/files/arch/mips/ar7/prom.c
+++ b/target/linux/ar7-2.6/files/arch/mips/ar7/prom.c
@@ -47,7 +47,7 @@ struct psp_chip_map {
/* I hate this. No. *I* *HATE* *THIS* */
static __initdata struct psp_chip_map psp_chip_map[] = {
{
- .chip = 0x5,
+ .chip = AR7_CHIP_7100,
.names = {
"dummy", "cpufrequency", "memsize",
"flashsize", "modetty0", "modetty1", "prompt",
@@ -65,7 +65,7 @@ static __initdata struct psp_chip_map psp_chip_map[] = {
},
},
{
- .chip = 0x18,
+ .chip = AR7_CHIP_7200,
.names = {
"dummy", "cpufrequency", "memsize",
"flashsize", "modetty0", "modetty1", "prompt",
@@ -83,7 +83,7 @@ static __initdata struct psp_chip_map psp_chip_map[] = {
},
},
{
- .chip = 0x2b,
+ .chip = AR7_CHIP_7300,
.names = {
"dummy", "cpufrequency", "memsize",
"flashsize", "modetty0", "modetty1", "prompt",
@@ -186,7 +186,7 @@ static int __init parse_psp_env(void *start)
char *src, *dest, *name, *value;
struct psp_env_var *vars = start;
- chip = get_chip_id();
+ chip = ar7_chip_id();
for (map = psp_chip_map; map->chip; map++)
if (map->chip == chip)
break;
diff --git a/target/linux/ar7-2.6/files/arch/mips/ar7/setup.c b/target/linux/ar7-2.6/files/arch/mips/ar7/setup.c
index 301abe0689..fb3d20c183 100644
--- a/target/linux/ar7-2.6/files/arch/mips/ar7/setup.c
+++ b/target/linux/ar7-2.6/files/arch/mips/ar7/setup.c
@@ -72,13 +72,13 @@ static void ar7_machine_power_off(void)
const char *get_system_type(void)
{
- u16 chip_id = get_chip_id();
+ u16 chip_id = ar7_chip_id();
switch (chip_id) {
- case 0x5:
+ case AR7_CHIP_7300:
return "TI AR7 (TNETD7300)";
- case 0x18:
+ case AR7_CHIP_7100:
return "TI AR7 (TNETD7100)";
- case 0x2b:
+ case AR7_CHIP_7200:
return "TI AR7 (TNETD7200)";
default:
return "TI AR7 (Unknown)";
@@ -95,6 +95,8 @@ static int __init ar7_init_console(void)
* given by the bios and saves the command line.
*/
+extern void ar7_init_clocks(void);
+
void __init plat_mem_setup(void)
{
unsigned long io_base;
@@ -110,6 +112,7 @@ void __init plat_mem_setup(void)
set_io_port_base(io_base);
prom_meminit();
+ ar7_init_clocks();
ioport_resource.start = 0;
ioport_resource.end = ~0;
diff --git a/target/linux/ar7-2.6/files/drivers/char/watchdog/ar7_wdt.c b/target/linux/ar7-2.6/files/drivers/char/watchdog/ar7_wdt.c
index 00919e76e7..59ac693d43 100644
--- a/target/linux/ar7-2.6/files/drivers/char/watchdog/ar7_wdt.c
+++ b/target/linux/ar7-2.6/files/drivers/char/watchdog/ar7_wdt.c
@@ -70,9 +70,6 @@ typedef struct {
static struct semaphore open_semaphore;
static unsigned expect_close;
-/* XXX correct? assumed to be sysfreq/2. get this dynamically ... */
-#define vbus_freq (ar7_bus_freq() / 2)
-
/* XXX currently fixed, allows max margin ~68.72 secs */
#define prescale_value 0xFFFF
@@ -143,14 +140,14 @@ static void ar7_wdt_update_margin(int new_margin)
{
u32 change;
- change = new_margin * (vbus_freq / prescale_value);
+ change = new_margin * (ar7_vbus_freq() / prescale_value);
if (change < 1) change = 1;
if (change > 0xFFFF) change = 0xFFFF;
ar7_wdt_change(change);
- margin = change * prescale_value / vbus_freq;
+ margin = change * prescale_value / ar7_vbus_freq();
printk(KERN_INFO DRVNAME
": timer margin %d seconds (prescale %d, change %d, freq %d)\n",
- margin, prescale_value, change, vbus_freq);
+ margin, prescale_value, change, ar7_vbus_freq());
}
static void ar7_wdt_enable_wdt(void)
diff --git a/target/linux/ar7-2.6/files/drivers/mtd/ar7part.c b/target/linux/ar7-2.6/files/drivers/mtd/ar7part.c
index 2b3edf67b7..0ae96a305f 100644
--- a/target/linux/ar7-2.6/files/drivers/mtd/ar7part.c
+++ b/target/linux/ar7-2.6/files/drivers/mtd/ar7part.c
@@ -29,6 +29,7 @@
#include <linux/mtd/partitions.h>
#include <linux/bootmem.h>
#include <linux/squashfs_fs.h>
+#include <linux/root_dev.h>
struct ar7_bin_rec {
unsigned int checksum;
@@ -108,6 +109,7 @@ static int create_mtd_partitions(struct mtd_info *master,
ar7_parts[p - 1].size -= ar7_parts[p].size;
ar7_parts[p - 1].mask_flags |= MTD_WRITEABLE;
ar7_parts[p++].mask_flags = 0;
+ ROOT_DEV = MKDEV(MTD_BLOCK_MAJOR, p - 1);
} else {
printk("Squashfs not found. Moving rootfs partition to next erase block\n");
if ((root_offset % master->erasesize) > 0)
@@ -116,6 +118,7 @@ static int create_mtd_partitions(struct mtd_info *master,
ar7_parts[p].offset = root_offset;
ar7_parts[p].size = master->size - root_offset - post_size;
+ ROOT_DEV = MKDEV(MTD_BLOCK_MAJOR, p);
}
*pparts = ar7_parts;
return p;
diff --git a/target/linux/ar7-2.6/files/include/asm-mips/ar7/ar7.h b/target/linux/ar7-2.6/files/include/asm-mips/ar7/ar7.h
index fe51a8d67b..a5fa474aff 100644
--- a/target/linux/ar7-2.6/files/include/asm-mips/ar7/ar7.h
+++ b/target/linux/ar7-2.6/files/include/asm-mips/ar7/ar7.h
@@ -31,12 +31,20 @@
#define AR7_REGS_GPIO (AR7_REGS_BASE + 0x0900)
#define AR7_REGS_POWER (AR7_REGS_BASE + 0x0a00)
#define AR7_REGS_WDT (AR7_REGS_BASE + 0x0b00)
+#define AR7_REGS_TIMER0 (AR7_REGS_BASE + 0x0c00)
+#define AR7_REGS_TIMER1 (AR7_REGS_BASE + 0x0d00)
#define AR7_REGS_UART0 (AR7_REGS_BASE + 0x0e00)
#define AR7_REGS_UART1 (AR7_REGS_BASE + 0x0f00)
+#define AR7_REGS_I2C (AR7_REGS_BASE + 0x1000)
+#define AR7_REGS_USB (AR7_REGS_BASE + 0x1200)
+#define AR7_REGS_DMA (AR7_REGS_BASE + 0x1400)
#define AR7_REGS_RESET (AR7_REGS_BASE + 0x1600)
+#define AR7_REGS_BIST (AR7_REGS_BASE + 0x1700)
#define AR7_REGS_VLYNQ0 (AR7_REGS_BASE + 0x1800)
+#define AR7_REGS_DCL (AR7_REGS_BASE + 0x1A00)
#define AR7_REGS_VLYNQ1 (AR7_REGS_BASE + 0x1C00)
#define AR7_REGS_MDIO (AR7_REGS_BASE + 0x1E00)
+#define AR7_REGS_FSER (AR7_REGS_BASE + 0x2000)
#define AR7_REGS_IRQ (AR7_REGS_BASE + 0x2400)
#define AR7_REGS_MAC1 (AR7_REGS_BASE + 0x2800)
@@ -54,6 +62,9 @@
#define AR7_GPIO_BIT_STATUS_LED 8
+#define AR7_CHIP_7100 0x18
+#define AR7_CHIP_7200 0x2b
+#define AR7_CHIP_7300 0x05
/* Interrupts */
#define AR7_IRQ_UART0 15
@@ -66,49 +77,52 @@ struct plat_cpmac_data {
char dev_addr[6];
};
+struct plat_dsl_data {
+ int reset_bit_dsl;
+ int reset_bit_sar;
+};
+
extern char *prom_getenv(char *envname);
-/* A bunch of small bit-toggling functions */
-static inline u32 get_chip_id(void)
+extern int ar7_cpu_clock, ar7_bus_clock, ar7_dsp_clock;
+
+static inline u16 ar7_chip_id(void)
{
- return *((u16 *)KSEG1ADDR(AR7_REGS_GPIO + 0x14));
+ return readl((void *)KSEG1ADDR(AR7_REGS_GPIO + 0x14)) & 0xffff;
+}
+
+static inline u8 ar7_chip_rev(void)
+{
+ return (readl((void *)KSEG1ADDR(AR7_REGS_GPIO + 0x14)) >> 16) & 0xff;
}
static inline int ar7_cpu_freq(void)
{
- u16 chip_id = get_chip_id();
- switch (chip_id) {
- case 0x5:
- return 150000000;
- case 0x18:
- case 0x2b:
- return 211968000;
- default:
- return 150000000;
- }
+ return ar7_cpu_clock;
}
static inline int ar7_bus_freq(void)
{
- u16 chip_id = get_chip_id();
- switch (chip_id) {
- case 0x5:
- return 125000000;
- case 0x18:
- case 0x2b:
- return 105984000;
- default:
- return 125000000;
- }
+ return ar7_bus_clock;
+}
+
+static inline int ar7_vbus_freq(void)
+{
+ return ar7_bus_clock / 2;
+}
+#define ar7_cpmac_freq ar7_vbus_freq
+
+static inline int ar7_dsp_freq(void)
+{
+ return ar7_dsp_clock;
}
-#define ar7_cpmac_freq ar7_bus_freq
static inline int ar7_has_high_cpmac(void)
{
- u16 chip_id = get_chip_id();
+ u16 chip_id = ar7_chip_id();
switch (chip_id) {
- case 0x18:
- case 0x2b:
+ case AR7_CHIP_7100:
+ case AR7_CHIP_7200:
return 0;
default:
return 1;
@@ -118,15 +132,15 @@ static inline int ar7_has_high_cpmac(void)
static inline void ar7_device_enable(u32 bit)
{
- volatile u32 *reset_reg = (u32 *)KSEG1ADDR(AR7_REGS_RESET + AR7_RESET_PEREPHERIAL);
- *reset_reg |= (1 << bit);
+ void *reset_reg = (void *)KSEG1ADDR(AR7_REGS_RESET + AR7_RESET_PEREPHERIAL);
+ writel(readl(reset_reg) | (1 << bit), reset_reg);
mdelay(20);
}
static inline void ar7_device_disable(u32 bit)
{
- volatile u32 *reset_reg = (u32 *)KSEG1ADDR(AR7_REGS_RESET + AR7_RESET_PEREPHERIAL);
- *reset_reg &= ~(1 << bit);
+ void *reset_reg = (void *)KSEG1ADDR(AR7_REGS_RESET + AR7_RESET_PEREPHERIAL);
+ writel(readl(reset_reg) & ~(1 << bit), reset_reg);
mdelay(20);
}
@@ -138,15 +152,15 @@ static inline void ar7_device_reset(u32 bit)
static inline void ar7_device_on(u32 bit)
{
- volatile u32 *power_reg = (u32 *)KSEG1ADDR(AR7_REGS_POWER);
- *power_reg |= (1 << bit);
+ void *power_reg = (void *)KSEG1ADDR(AR7_REGS_POWER);
+ writel(readl(power_reg) | (1 << bit), power_reg);
mdelay(20);
}
static inline void ar7_device_off(u32 bit)
{
- volatile u32 *power_reg = (u32 *)KSEG1ADDR(AR7_REGS_POWER);
- *power_reg &= ~(1 << bit);
+ void *power_reg = (void *)KSEG1ADDR(AR7_REGS_POWER);
+ writel(readl(power_reg) & ~(1 << bit), power_reg);
mdelay(20);
}
diff --git a/target/linux/ar7-2.6/files/include/asm-mips/ar7/gpio.h b/target/linux/ar7-2.6/files/include/asm-mips/ar7/gpio.h
index 73673feff6..97638077fd 100644
--- a/target/linux/ar7-2.6/files/include/asm-mips/ar7/gpio.h
+++ b/target/linux/ar7-2.6/files/include/asm-mips/ar7/gpio.h
@@ -35,7 +35,7 @@ static inline int gpio_direction_input(unsigned gpio)
if (gpio >= AR7_GPIO_MAX)
return -EINVAL;
- __raw_writel(__raw_readl(gpio_dir) | (1 << gpio), gpio_dir);
+ writel(readl(gpio_dir) | (1 << gpio), gpio_dir);
return 0;
}
@@ -47,7 +47,7 @@ static inline int gpio_direction_output(unsigned gpio)
if (gpio >= AR7_GPIO_MAX)
return -EINVAL;
- __raw_writel(__raw_readl(gpio_dir) & ~(1 << gpio), gpio_dir);
+ writel(readl(gpio_dir) & ~(1 << gpio), gpio_dir);
return 0;
}
@@ -59,7 +59,7 @@ static inline int gpio_get_value(unsigned gpio)
if (gpio >= AR7_GPIO_MAX)
return -EINVAL;
- return ((__raw_readl(gpio_in) & (1 << gpio)) != 0);
+ return ((readl(gpio_in) & (1 << gpio)) != 0);
}
static inline void gpio_set_value(unsigned gpio, int value)
@@ -70,10 +70,10 @@ static inline void gpio_set_value(unsigned gpio, int value)
if (gpio >= AR7_GPIO_MAX)
return;
- tmp = __raw_readl(gpio_out) & ~(1 << gpio);
+ tmp = readl(gpio_out) & ~(1 << gpio);
if (value)
tmp |= 1 << gpio;
- __raw_writel(tmp, gpio_out);
+ writel(tmp, gpio_out);
}
static inline int gpio_to_irq(unsigned gpio)
@@ -94,7 +94,7 @@ static inline int ar7_gpio_enable(unsigned gpio)
if (gpio >= AR7_GPIO_MAX)
return -EINVAL;
- __raw_writel(__raw_readl(gpio_en) | (1 << gpio), gpio_en);
+ writel(readl(gpio_en) | (1 << gpio), gpio_en);
return 0;
}
@@ -106,7 +106,7 @@ static inline int ar7_gpio_disable(unsigned gpio)
if (gpio >= AR7_GPIO_MAX)
return -EINVAL;
- __raw_writel(__raw_readl(gpio_en) & ~(1 << gpio), gpio_en);
+ writel(readl(gpio_en) & ~(1 << gpio), gpio_en);
return 0;
}