Commit 87d31345 authored by Benjamin Herrenschmidt's avatar Benjamin Herrenschmidt

Merge commit 'gcl/next' into next

parents e98efaf3 d24720a4
MPC5121 PSC Device Tree Bindings
PSC in UART mode
----------------
For PSC in UART mode the needed PSC serial devices
are specified by fsl,mpc5121-psc-uart nodes in the
fsl,mpc5121-immr SoC node. Additionally the PSC FIFO
Controller node fsl,mpc5121-psc-fifo is requered there:
fsl,mpc5121-psc-uart nodes
--------------------------
Required properties :
- compatible : Should contain "fsl,mpc5121-psc-uart" and "fsl,mpc5121-psc"
- cell-index : Index of the PSC in hardware
- reg : Offset and length of the register set for the PSC device
- interrupts : <a b> where a is the interrupt number of the
PSC FIFO Controller and b is a field that represents an
encoding of the sense and level information for the interrupt.
- interrupt-parent : the phandle for the interrupt controller that
services interrupts for this device.
Recommended properties :
- fsl,rx-fifo-size : the size of the RX fifo slice (a multiple of 4)
- fsl,tx-fifo-size : the size of the TX fifo slice (a multiple of 4)
fsl,mpc5121-psc-fifo node
-------------------------
Required properties :
- compatible : Should be "fsl,mpc5121-psc-fifo"
- reg : Offset and length of the register set for the PSC
FIFO Controller
- interrupts : <a b> where a is the interrupt number of the
PSC FIFO Controller and b is a field that represents an
encoding of the sense and level information for the interrupt.
- interrupt-parent : the phandle for the interrupt controller that
services interrupts for this device.
Example for a board using PSC0 and PSC1 devices in serial mode:
serial@11000 {
compatible = "fsl,mpc5121-psc-uart", "fsl,mpc5121-psc";
cell-index = <0>;
reg = <0x11000 0x100>;
interrupts = <40 0x8>;
interrupt-parent = < &ipic >;
fsl,rx-fifo-size = <16>;
fsl,tx-fifo-size = <16>;
};
serial@11100 {
compatible = "fsl,mpc5121-psc-uart", "fsl,mpc5121-psc";
cell-index = <1>;
reg = <0x11100 0x100>;
interrupts = <40 0x8>;
interrupt-parent = < &ipic >;
fsl,rx-fifo-size = <16>;
fsl,tx-fifo-size = <16>;
};
pscfifo@11f00 {
compatible = "fsl,mpc5121-psc-fifo";
reg = <0x11f00 0x100>;
interrupts = <40 0x8>;
interrupt-parent = < &ipic >;
};
...@@ -13,6 +13,11 @@ Required properties: ...@@ -13,6 +13,11 @@ Required properties:
- interrupt-parent : the phandle for the interrupt controller that - interrupt-parent : the phandle for the interrupt controller that
services interrupts for this device. services interrupts for this device.
Optional properties:
- gpios : specifies the gpio pins to be used for chipselects.
The gpios will be referred to as reg = <index> in the SPI child nodes.
If unspecified, a single SPI device without a chip select can be used.
Example: Example:
spi@4c0 { spi@4c0 {
cell-index = <0>; cell-index = <0>;
...@@ -21,4 +26,6 @@ Example: ...@@ -21,4 +26,6 @@ Example:
interrupts = <82 0>; interrupts = <82 0>;
interrupt-parent = <700>; interrupt-parent = <700>;
mode = "cpu"; mode = "cpu";
gpios = <&gpio 18 1 // device reg=<0>
&gpio 19 1>; // device reg=<1>
}; };
...@@ -62,17 +62,12 @@ ...@@ -62,17 +62,12 @@
interrupt-parent = < &ipic >; interrupt-parent = < &ipic >;
#address-cells = <1>; #address-cells = <1>;
#size-cells = <1>; #size-cells = <1>;
bank-width = <1>;
// ADS has two Hynix 512MB Nand flash chips in a single // ADS has two Hynix 512MB Nand flash chips in a single
// stacked package . // stacked package.
chips = <2>; chips = <2>;
nand0@0 { nand@0 {
label = "nand0"; label = "nand";
reg = <0x00000000 0x02000000>; // first 32 MB of chip 0 reg = <0x00000000 0x40000000>; // 512MB + 512MB
};
nand1@20000000 {
label = "nand1";
reg = <0x20000000 0x02000000>; // first 32 MB of chip 1
}; };
}; };
...@@ -166,6 +161,11 @@ ...@@ -166,6 +161,11 @@
interrupt-parent = < &ipic >; interrupt-parent = < &ipic >;
}; };
reset@e00 { // Reset module
compatible = "fsl,mpc5121-reset";
reg = <0xe00 0x100>;
};
clock@f00 { // Clock control clock@f00 { // Clock control
compatible = "fsl,mpc5121-clock"; compatible = "fsl,mpc5121-clock";
reg = <0xf00 0x100>; reg = <0xf00 0x100>;
...@@ -185,17 +185,15 @@ ...@@ -185,17 +185,15 @@
interrupt-parent = < &ipic >; interrupt-parent = < &ipic >;
}; };
mscan@1300 { can@1300 {
compatible = "fsl,mpc5121-mscan"; compatible = "fsl,mpc5121-mscan";
cell-index = <0>;
interrupts = <12 0x8>; interrupts = <12 0x8>;
interrupt-parent = < &ipic >; interrupt-parent = < &ipic >;
reg = <0x1300 0x80>; reg = <0x1300 0x80>;
}; };
mscan@1380 { can@1380 {
compatible = "fsl,mpc5121-mscan"; compatible = "fsl,mpc5121-mscan";
cell-index = <1>;
interrupts = <13 0x8>; interrupts = <13 0x8>;
interrupt-parent = < &ipic >; interrupt-parent = < &ipic >;
reg = <0x1380 0x80>; reg = <0x1380 0x80>;
...@@ -205,17 +203,31 @@ ...@@ -205,17 +203,31 @@
#address-cells = <1>; #address-cells = <1>;
#size-cells = <0>; #size-cells = <0>;
compatible = "fsl,mpc5121-i2c", "fsl-i2c"; compatible = "fsl,mpc5121-i2c", "fsl-i2c";
cell-index = <0>;
reg = <0x1700 0x20>; reg = <0x1700 0x20>;
interrupts = <9 0x8>; interrupts = <9 0x8>;
interrupt-parent = < &ipic >; interrupt-parent = < &ipic >;
fsl,preserve-clocking;
hwmon@4a {
compatible = "adi,ad7414";
reg = <0x4a>;
};
eeprom@50 {
compatible = "at,24c32";
reg = <0x50>;
};
rtc@68 {
compatible = "stm,m41t62";
reg = <0x68>;
};
}; };
i2c@1720 { i2c@1720 {
#address-cells = <1>; #address-cells = <1>;
#size-cells = <0>; #size-cells = <0>;
compatible = "fsl,mpc5121-i2c", "fsl-i2c"; compatible = "fsl,mpc5121-i2c", "fsl-i2c";
cell-index = <1>;
reg = <0x1720 0x20>; reg = <0x1720 0x20>;
interrupts = <10 0x8>; interrupts = <10 0x8>;
interrupt-parent = < &ipic >; interrupt-parent = < &ipic >;
...@@ -225,7 +237,6 @@ ...@@ -225,7 +237,6 @@
#address-cells = <1>; #address-cells = <1>;
#size-cells = <0>; #size-cells = <0>;
compatible = "fsl,mpc5121-i2c", "fsl-i2c"; compatible = "fsl,mpc5121-i2c", "fsl-i2c";
cell-index = <2>;
reg = <0x1740 0x20>; reg = <0x1740 0x20>;
interrupts = <11 0x8>; interrupts = <11 0x8>;
interrupt-parent = < &ipic >; interrupt-parent = < &ipic >;
...@@ -244,7 +255,7 @@ ...@@ -244,7 +255,7 @@
}; };
display@2100 { display@2100 {
compatible = "fsl,mpc5121-diu", "fsl-diu"; compatible = "fsl,mpc5121-diu";
reg = <0x2100 0x100>; reg = <0x2100 0x100>;
interrupts = <64 0x8>; interrupts = <64 0x8>;
interrupt-parent = < &ipic >; interrupt-parent = < &ipic >;
...@@ -277,7 +288,7 @@ ...@@ -277,7 +288,7 @@
// USB1 using external ULPI PHY // USB1 using external ULPI PHY
//usb@3000 { //usb@3000 {
// compatible = "fsl,mpc5121-usb2-dr", "fsl-usb2-dr"; // compatible = "fsl,mpc5121-usb2-dr";
// reg = <0x3000 0x1000>; // reg = <0x3000 0x1000>;
// #address-cells = <1>; // #address-cells = <1>;
// #size-cells = <0>; // #size-cells = <0>;
...@@ -285,12 +296,11 @@ ...@@ -285,12 +296,11 @@
// interrupts = <43 0x8>; // interrupts = <43 0x8>;
// dr_mode = "otg"; // dr_mode = "otg";
// phy_type = "ulpi"; // phy_type = "ulpi";
// port1;
//}; //};
// USB0 using internal UTMI PHY // USB0 using internal UTMI PHY
usb@4000 { usb@4000 {
compatible = "fsl,mpc5121-usb2-dr", "fsl-usb2-dr"; compatible = "fsl,mpc5121-usb2-dr";
reg = <0x4000 0x1000>; reg = <0x4000 0x1000>;
#address-cells = <1>; #address-cells = <1>;
#size-cells = <0>; #size-cells = <0>;
...@@ -298,7 +308,8 @@ ...@@ -298,7 +308,8 @@
interrupts = <44 0x8>; interrupts = <44 0x8>;
dr_mode = "otg"; dr_mode = "otg";
phy_type = "utmi_wide"; phy_type = "utmi_wide";
port0; fsl,invert-drvvbus;
fsl,invert-pwr-fault;
}; };
// IO control // IO control
...@@ -365,7 +376,7 @@ ...@@ -365,7 +376,7 @@
}; };
dma@14000 { dma@14000 {
compatible = "fsl,mpc5121-dma2"; compatible = "fsl,mpc5121-dma";
reg = <0x14000 0x1800>; reg = <0x14000 0x1800>;
interrupts = <65 0x8>; interrupts = <65 0x8>;
interrupt-parent = < &ipic >; interrupt-parent = < &ipic >;
......
This diff is collapsed.
/*
* MPC5121 Prototypes and definitions
*
* This file is licensed under the terms of the GNU General Public
* License version 2.
*/
#ifndef __ASM_POWERPC_MPC5121_H__
#define __ASM_POWERPC_MPC5121_H__
/* MPC512x Reset module registers */
struct mpc512x_reset_module {
u32 rcwlr; /* Reset Configuration Word Low Register */
u32 rcwhr; /* Reset Configuration Word High Register */
u32 reserved1;
u32 reserved2;
u32 rsr; /* Reset Status Register */
u32 rmr; /* Reset Mode Register */
u32 rpr; /* Reset Protection Register */
u32 rcr; /* Reset Control Register */
u32 rcer; /* Reset Control Enable Register */
};
#endif /* __ASM_POWERPC_MPC5121_H__ */
...@@ -25,7 +25,11 @@ ...@@ -25,7 +25,11 @@
#include <asm/types.h> #include <asm/types.h>
/* Max number of PSCs */ /* Max number of PSCs */
#ifdef CONFIG_PPC_MPC512x
#define MPC52xx_PSC_MAXNUM 12
#else
#define MPC52xx_PSC_MAXNUM 6 #define MPC52xx_PSC_MAXNUM 6
#endif
/* Programmable Serial Controller (PSC) status register bits */ /* Programmable Serial Controller (PSC) status register bits */
#define MPC52xx_PSC_SR_UNEX_RX 0x0001 #define MPC52xx_PSC_SR_UNEX_RX 0x0001
......
...@@ -698,8 +698,7 @@ static struct clk_interface mpc5121_clk_functions = { ...@@ -698,8 +698,7 @@ static struct clk_interface mpc5121_clk_functions = {
.clk_get_parent = NULL, .clk_get_parent = NULL,
}; };
static int int __init mpc5121_clk_init(void)
mpc5121_clk_init(void)
{ {
struct device_node *np; struct device_node *np;
...@@ -724,6 +723,3 @@ mpc5121_clk_init(void) ...@@ -724,6 +723,3 @@ mpc5121_clk_init(void)
clk_functions = mpc5121_clk_functions; clk_functions = mpc5121_clk_functions;
return 0; return 0;
} }
arch_initcall(mpc5121_clk_init);
...@@ -64,8 +64,9 @@ define_machine(mpc5121_ads) { ...@@ -64,8 +64,9 @@ define_machine(mpc5121_ads) {
.name = "MPC5121 ADS", .name = "MPC5121 ADS",
.probe = mpc5121_ads_probe, .probe = mpc5121_ads_probe,
.setup_arch = mpc5121_ads_setup_arch, .setup_arch = mpc5121_ads_setup_arch,
.init = mpc512x_declare_of_platform_devices, .init = mpc512x_init,
.init_IRQ = mpc5121_ads_init_IRQ, .init_IRQ = mpc5121_ads_init_IRQ,
.get_irq = ipic_get_irq, .get_irq = ipic_get_irq,
.calibrate_decr = generic_calibrate_decr, .calibrate_decr = generic_calibrate_decr,
.restart = mpc512x_restart,
}; };
...@@ -51,8 +51,9 @@ static int __init mpc5121_generic_probe(void) ...@@ -51,8 +51,9 @@ static int __init mpc5121_generic_probe(void)
define_machine(mpc5121_generic) { define_machine(mpc5121_generic) {
.name = "MPC5121 generic", .name = "MPC5121 generic",
.probe = mpc5121_generic_probe, .probe = mpc5121_generic_probe,
.init = mpc512x_declare_of_platform_devices, .init = mpc512x_init,
.init_IRQ = mpc512x_init_IRQ, .init_IRQ = mpc512x_init_IRQ,
.get_irq = ipic_get_irq, .get_irq = ipic_get_irq,
.calibrate_decr = generic_calibrate_decr, .calibrate_decr = generic_calibrate_decr,
.restart = mpc512x_restart,
}; };
...@@ -12,5 +12,8 @@ ...@@ -12,5 +12,8 @@
#ifndef __MPC512X_H__ #ifndef __MPC512X_H__
#define __MPC512X_H__ #define __MPC512X_H__
extern void __init mpc512x_init_IRQ(void); extern void __init mpc512x_init_IRQ(void);
extern void __init mpc512x_init(void);
extern int __init mpc5121_clk_init(void);
void __init mpc512x_declare_of_platform_devices(void); void __init mpc512x_declare_of_platform_devices(void);
extern void mpc512x_restart(char *cmd);
#endif /* __MPC512X_H__ */ #endif /* __MPC512X_H__ */
...@@ -21,9 +21,38 @@ ...@@ -21,9 +21,38 @@
#include <asm/ipic.h> #include <asm/ipic.h>
#include <asm/prom.h> #include <asm/prom.h>
#include <asm/time.h> #include <asm/time.h>
#include <asm/mpc5121.h>
#include "mpc512x.h" #include "mpc512x.h"
static struct mpc512x_reset_module __iomem *reset_module_base;
static void __init mpc512x_restart_init(void)
{
struct device_node *np;
np = of_find_compatible_node(NULL, NULL, "fsl,mpc5121-reset");
if (!np)
return;
reset_module_base = of_iomap(np, 0);
of_node_put(np);
}
void mpc512x_restart(char *cmd)
{
if (reset_module_base) {
/* Enable software reset "RSTE" */
out_be32(&reset_module_base->rpr, 0x52535445);
/* Set software hard reset */
out_be32(&reset_module_base->rcr, 0x2);
} else {
pr_err("Restart module not mapped.\n");
}
for (;;)
;
}
void __init mpc512x_init_IRQ(void) void __init mpc512x_init_IRQ(void)
{ {
struct device_node *np; struct device_node *np;
...@@ -53,8 +82,22 @@ static struct of_device_id __initdata of_bus_ids[] = { ...@@ -53,8 +82,22 @@ static struct of_device_id __initdata of_bus_ids[] = {
void __init mpc512x_declare_of_platform_devices(void) void __init mpc512x_declare_of_platform_devices(void)
{ {
struct device_node *np;
if (of_platform_bus_probe(NULL, of_bus_ids, NULL)) if (of_platform_bus_probe(NULL, of_bus_ids, NULL))
printk(KERN_ERR __FILE__ ": " printk(KERN_ERR __FILE__ ": "
"Error while probing of_platform bus\n"); "Error while probing of_platform bus\n");
np = of_find_compatible_node(NULL, NULL, "fsl,mpc5121-nfc");
if (np) {
of_platform_device_create(np, NULL, NULL);
of_node_put(np);
}
} }
void __init mpc512x_init(void)
{
mpc512x_declare_of_platform_devices();
mpc5121_clk_init();
mpc512x_restart_init();
}
...@@ -868,4 +868,14 @@ config RTC_DRV_MC13783 ...@@ -868,4 +868,14 @@ config RTC_DRV_MC13783
help help
This enables support for the Freescale MC13783 PMIC RTC This enables support for the Freescale MC13783 PMIC RTC
config RTC_DRV_MPC5121
tristate "Freescale MPC5121 built-in RTC"
depends on PPC_MPC512x && RTC_CLASS
help
If you say yes here you will get support for the
built-in RTC MPC5121.
This driver can also be built as a module. If so, the module
will be called rtc-mpc5121.
endif # RTC_CLASS endif # RTC_CLASS
...@@ -55,6 +55,7 @@ obj-$(CONFIG_RTC_DRV_MAX6900) += rtc-max6900.o ...@@ -55,6 +55,7 @@ obj-$(CONFIG_RTC_DRV_MAX6900) += rtc-max6900.o
obj-$(CONFIG_RTC_DRV_MAX6902) += rtc-max6902.o obj-$(CONFIG_RTC_DRV_MAX6902) += rtc-max6902.o
obj-$(CONFIG_RTC_DRV_MC13783) += rtc-mc13783.o obj-$(CONFIG_RTC_DRV_MC13783) += rtc-mc13783.o
obj-$(CONFIG_RTC_DRV_MSM6242) += rtc-msm6242.o obj-$(CONFIG_RTC_DRV_MSM6242) += rtc-msm6242.o
obj-$(CONFIG_RTC_DRV_MPC5121) += rtc-mpc5121.o
obj-$(CONFIG_RTC_DRV_MV) += rtc-mv.o obj-$(CONFIG_RTC_DRV_MV) += rtc-mv.o
obj-$(CONFIG_RTC_DRV_NUC900) += rtc-nuc900.o obj-$(CONFIG_RTC_DRV_NUC900) += rtc-nuc900.o
obj-$(CONFIG_RTC_DRV_OMAP) += rtc-omap.o obj-$(CONFIG_RTC_DRV_OMAP) += rtc-omap.o
......
/*
* Real-time clock driver for MPC5121
*
* Copyright 2007, Domen Puncer <domen.puncer@telargo.com>
* Copyright 2008, Freescale Semiconductor, Inc. All rights reserved.
*
* 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/init.h>
#include <linux/module.h>
#include <linux/rtc.h>
#include <linux/of_device.h>
#include <linux/of_platform.h>
#include <linux/io.h>
struct mpc5121_rtc_regs {
u8 set_time; /* RTC + 0x00 */
u8 hour_set; /* RTC + 0x01 */
u8 minute_set; /* RTC + 0x02 */
u8 second_set; /* RTC + 0x03 */
u8 set_date; /* RTC + 0x04 */
u8 month_set; /* RTC + 0x05 */
u8 weekday_set; /* RTC + 0x06 */
u8 date_set; /* RTC + 0x07 */
u8 write_sw; /* RTC + 0x08 */
u8 sw_set; /* RTC + 0x09 */
u16 year_set; /* RTC + 0x0a */
u8 alm_enable; /* RTC + 0x0c */
u8 alm_hour_set; /* RTC + 0x0d */
u8 alm_min_set; /* RTC + 0x0e */
u8 int_enable; /* RTC + 0x0f */
u8 reserved1;
u8 hour; /* RTC + 0x11 */
u8 minute; /* RTC + 0x12 */
u8 second; /* RTC + 0x13 */
u8 month; /* RTC + 0x14 */
u8 wday_mday; /* RTC + 0x15 */
u16 year; /* RTC + 0x16 */
u8 int_alm; /* RTC + 0x18 */
u8 int_sw; /* RTC + 0x19 */
u8 alm_status; /* RTC + 0x1a */
u8 sw_minute; /* RTC + 0x1b */
u8 bus_error_1; /* RTC + 0x1c */
u8 int_day; /* RTC + 0x1d */
u8 int_min; /* RTC + 0x1e */
u8 int_sec; /* RTC + 0x1f */
/*
* target_time:
* intended to be used for hibernation but hibernation
* does not work on silicon rev 1.5 so use it for non-volatile
* storage of offset between the actual_time register and linux
* time
*/
u32 target_time; /* RTC + 0x20 */
/*
* actual_time:
* readonly time since VBAT_RTC was last connected
*/
u32 actual_time; /* RTC + 0x24 */
u32 keep_alive; /* RTC + 0x28 */
};
struct mpc5121_rtc_data {
unsigned irq;
unsigned irq_periodic;
struct mpc5121_rtc_regs __iomem *regs;
struct rtc_device *rtc;
struct rtc_wkalrm wkalarm;
};
/*
* Update second/minute/hour registers.
*
* This is just so alarm will work.
*/
static void mpc5121_rtc_update_smh(struct mpc5121_rtc_regs __iomem *regs,
struct rtc_time *tm)
{
out_8(&regs->second_set, tm->tm_sec);
out_8(&regs->minute_set, tm->tm_min);
out_8(&regs->hour_set, tm->tm_hour);
/* set time sequence */
out_8(&regs->set_time, 0x1);
out_8(&regs->set_time, 0x3);
out_8(&regs->set_time, 0x1);
out_8(&regs->set_time, 0x0);
}
static int mpc5121_rtc_read_time(struct device *dev, struct rtc_time *tm)
{
struct mpc5121_rtc_data *rtc = dev_get_drvdata(dev);
struct mpc5121_rtc_regs __iomem *regs = rtc->regs;
unsigned long now;
/*
* linux time is actual_time plus the offset saved in target_time
*/
now = in_be32(&regs->actual_time) + in_be32(&regs->target_time);
rtc_time_to_tm(now, tm);
/*
* update second minute hour registers
* so alarms will work
*/
mpc5121_rtc_update_smh(regs, tm);
return rtc_valid_tm(tm);
}
static int mpc5121_rtc_set_time(struct device *dev, struct rtc_time *tm)
{
struct mpc5121_rtc_data *rtc = dev_get_drvdata(dev);
struct mpc5121_rtc_regs __iomem *regs = rtc->regs;
int ret;
unsigned long now;
/*
* The actual_time register is read only so we write the offset
* between it and linux time to the target_time register.
*/
ret = rtc_tm_to_time(tm, &now);
if (ret == 0)
out_be32(&regs->target_time, now - in_be32(&regs->actual_time));
/*
* update second minute hour registers
* so alarms will work
*/
mpc5121_rtc_update_smh(regs, tm);
return 0;
}
static int mpc5121_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alarm)
{
struct mpc5121_rtc_data *rtc = dev_get_drvdata(dev);
struct mpc5121_rtc_regs __iomem *regs = rtc->regs;
*alarm = rtc->wkalarm;
alarm->pending = in_8(&regs->alm_status);
return 0;
}
static int mpc5121_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alarm)
{
struct mpc5121_rtc_data *rtc = dev_get_drvdata(dev);
struct mpc5121_rtc_regs __iomem *regs = rtc->regs;
/*
* the alarm has no seconds so deal with it
*/
if (alarm->time.tm_sec) {
alarm->time.tm_sec = 0;
alarm->time.tm_min++;
if (alarm->time.tm_min >= 60) {
alarm->time.tm_min = 0;
alarm->time.tm_hour++;
if (alarm->time.tm_hour >= 24)
alarm->time.tm_hour = 0;
}
}
alarm->time.tm_mday = -1;
alarm->time.tm_mon = -1;
alarm->time.tm_year = -1;
out_8(&regs->alm_min_set, alarm->time.tm_min);
out_8(&regs->alm_hour_set, alarm->time.tm_hour);
out_8(&regs->alm_enable, alarm->enabled);
rtc->wkalarm = *alarm;
return 0;
}
static irqreturn_t mpc5121_rtc_handler(int irq, void *dev)
{
struct mpc5121_rtc_data *rtc = dev_get_drvdata((struct device *)dev);
struct mpc5121_rtc_regs __iomem *regs = rtc->regs;
if (in_8(&regs->int_alm)) {
/* acknowledge and clear status */
out_8(&regs->int_alm, 1);
out_8(&regs->alm_status, 1);
rtc_update_irq(rtc->rtc, 1, RTC_IRQF | RTC_AF);
return IRQ_HANDLED;
}
return IRQ_NONE;
}
static irqreturn_t mpc5121_rtc_handler_upd(int irq, void *dev)
{
struct mpc5121_rtc_data *rtc = dev_get_drvdata((struct device *)dev);
struct mpc5121_rtc_regs __iomem *regs = rtc->regs;
if (in_8(&regs->int_sec) && (in_8(&regs->int_enable) & 0x1)) {
/* acknowledge */
out_8(&regs->int_sec, 1);
rtc_update_irq(rtc->rtc, 1, RTC_IRQF | RTC_UF);
return IRQ_HANDLED;
}
return IRQ_NONE;
}
static int mpc5121_rtc_alarm_irq_enable(struct device *dev,
unsigned int enabled)
{
struct mpc5121_rtc_data *rtc = dev_get_drvdata(dev);
struct mpc5121_rtc_regs __iomem *regs = rtc->regs;
int val;
if (enabled)
val = 1;
else
val = 0;
out_8(&regs->alm_enable, val);
rtc->wkalarm.enabled = val;
return 0;
}
static int mpc5121_rtc_update_irq_enable(struct device *dev,
unsigned int enabled)
{
struct mpc5121_rtc_data *rtc = dev_get_drvdata(dev);
struct mpc5121_rtc_regs __iomem *regs = rtc->regs;
int val;
val = in_8(&regs->int_enable);
if (enabled)
val = (val & ~0x8) | 0x1;
else
val &= ~0x1;
out_8(&regs->int_enable, val);
return 0;
}
static const struct rtc_class_ops mpc5121_rtc_ops = {
.read_time = mpc5121_rtc_read_time,
.set_time = mpc5121_rtc_set_time,
.read_alarm = mpc5121_rtc_read_alarm,
.set_alarm = mpc5121_rtc_set_alarm,
.alarm_irq_enable = mpc5121_rtc_alarm_irq_enable,
.update_irq_enable = mpc5121_rtc_update_irq_enable,
};
static int __devinit mpc5121_rtc_probe(struct of_device *op,
const struct of_device_id *match)
{
struct mpc5121_rtc_data *rtc;
int err = 0;
u32 ka;
rtc = kzalloc(sizeof(*rtc), GFP_KERNEL);
if (!rtc)
return -ENOMEM;
rtc->regs = of_iomap(op->node, 0);
if (!rtc->regs) {
dev_err(&op->dev, "%s: couldn't map io space\n", __func__);
err = -ENOSYS;
goto out_free;
}
device_init_wakeup(&op->dev, 1);
dev_set_drvdata(&op->dev, rtc);
rtc->irq = irq_of_parse_and_map(op->node, 1);
err = request_irq(rtc->irq, mpc5121_rtc_handler, IRQF_DISABLED,
"mpc5121-rtc", &op->dev);
if (err) {
dev_err(&op->dev, "%s: could not request irq: %i\n",
__func__, rtc->irq);
goto out_dispose;
}
rtc->irq_periodic = irq_of_parse_and_map(op->node, 0);
err = request_irq(rtc->irq_periodic, mpc5121_rtc_handler_upd,
IRQF_DISABLED, "mpc5121-rtc_upd", &op->dev);
if (err) {
dev_err(&op->dev, "%s: could not request irq: %i\n",
__func__, rtc->irq_periodic);
goto out_dispose2;
}
ka = in_be32(&rtc->regs->keep_alive);
if (ka & 0x02) {
dev_warn(&op->dev,
"mpc5121-rtc: Battery or oscillator failure!\n");
out_be32(&rtc->regs->keep_alive, ka);
}
rtc->rtc = rtc_device_register("mpc5121-rtc", &op->dev,
&mpc5121_rtc_ops, THIS_MODULE);
if (IS_ERR(rtc->rtc)) {
err = PTR_ERR(rtc->rtc);
goto out_free_irq;
}
return 0;
out_free_irq:
free_irq(rtc->irq_periodic, &op->dev);
out_dispose2:
irq_dispose_mapping(rtc->irq_periodic);
free_irq(rtc->irq, &op->dev);
out_dispose:
irq_dispose_mapping(rtc->irq);
iounmap(rtc->regs);
out_free:
kfree(rtc);
return err;
}
static int __devexit mpc5121_rtc_remove(struct of_device *op)
{
struct mpc5121_rtc_data *rtc = dev_get_drvdata(&op->dev);
struct mpc5121_rtc_regs __iomem *regs = rtc->regs;
/* disable interrupt, so there are no nasty surprises */
out_8(&regs->alm_enable, 0);
out_8(&regs->int_enable, in_8(&regs->int_enable) & ~0x1);
rtc_device_unregister(rtc->rtc);
iounmap(rtc->regs);
free_irq(rtc->irq, &op->dev);
free_irq(rtc->irq_periodic, &op->dev);
irq_dispose_mapping(rtc->irq);
irq_dispose_mapping(rtc->irq_periodic);
dev_set_drvdata(&op->dev, NULL);
kfree(rtc);
return 0;
}
static struct of_device_id mpc5121_rtc_match[] __devinitdata = {
{ .compatible = "fsl,mpc5121-rtc", },
{},
};
static struct of_platform_driver mpc5121_rtc_driver = {
.owner = THIS_MODULE,
.name = "mpc5121-rtc",
.match_table = mpc5121_rtc_match,
.probe = mpc5121_rtc_probe,
.remove = __devexit_p(mpc5121_rtc_remove),
};
static int __init mpc5121_rtc_init(void)
{
return of_register_platform_driver(&mpc5121_rtc_driver);
}
module_init(mpc5121_rtc_init);
static void __exit mpc5121_rtc_exit(void)
{
of_unregister_platform_driver(&mpc5121_rtc_driver);
}
module_exit(mpc5121_rtc_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("John Rigby <jcrigby@gmail.com>");
This diff is collapsed.
...@@ -1633,6 +1633,11 @@ static int __init fsl_diu_setup(char *options) ...@@ -1633,6 +1633,11 @@ static int __init fsl_diu_setup(char *options)
#endif #endif
static struct of_device_id fsl_diu_match[] = { static struct of_device_id fsl_diu_match[] = {
#ifdef CONFIG_PPC_MPC512x
{
.compatible = "fsl,mpc5121-diu",
},
#endif
{ {
.compatible = "fsl,diu", .compatible = "fsl,diu",
}, },
......
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