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Merge commit 'gcl/next' into next

This commit is contained in:
Benjamin Herrenschmidt 2010-02-19 14:38:23 +11:00
parent e98efaf303 d24720a45a
commit 87d31345c0
16 changed files with 2522 additions and 44 deletions
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70
Documentation/powerpc/dts-bindings/fsl/mpc5121-psc.txt Normal file
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@ -0,0 +1,70 @@
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 >;
};

7
Documentation/powerpc/dts-bindings/fsl/spi.txt
View File

@ -13,6 +13,11 @@ Required properties:
- interrupt-parent : the phandle for the interrupt controller that
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:
spi@4c0 {
cell-index = <0>;
@ -21,4 +26,6 @@ Example:
interrupts = <82 0>;
interrupt-parent = <700>;
mode = "cpu";
gpios = <&gpio 18 1 // device reg=<0>
&gpio 19 1>; // device reg=<1>
};

55
arch/powerpc/boot/dts/mpc5121ads.dts
View File

@ -62,17 +62,12 @@
interrupt-parent = < &ipic >;
#address-cells = <1>;
#size-cells = <1>;
bank-width = <1>;
// ADS has two Hynix 512MB Nand flash chips in a single
// stacked package .
// stacked package.
chips = <2>;
nand0@0 {
label = "nand0";
reg = <0x00000000 0x02000000>; // first 32 MB of chip 0
};
nand1@20000000 {
label = "nand1";
reg = <0x20000000 0x02000000>; // first 32 MB of chip 1
nand@0 {
label = "nand";
reg = <0x00000000 0x40000000>; // 512MB + 512MB
};
};
@ -166,6 +161,11 @@
interrupt-parent = < &ipic >;
};
reset@e00 { // Reset module
compatible = "fsl,mpc5121-reset";
reg = <0xe00 0x100>;
};
clock@f00 { // Clock control
compatible = "fsl,mpc5121-clock";
reg = <0xf00 0x100>;
@ -185,17 +185,15 @@
interrupt-parent = < &ipic >;
};
mscan@1300 {
can@1300 {
compatible = "fsl,mpc5121-mscan";
cell-index = <0>;
interrupts = <12 0x8>;
interrupt-parent = < &ipic >;
reg = <0x1300 0x80>;
};
mscan@1380 {
can@1380 {
compatible = "fsl,mpc5121-mscan";
cell-index = <1>;
interrupts = <13 0x8>;
interrupt-parent = < &ipic >;
reg = <0x1380 0x80>;
@ -205,17 +203,31 @@
#address-cells = <1>;
#size-cells = <0>;
compatible = "fsl,mpc5121-i2c", "fsl-i2c";
cell-index = <0>;
reg = <0x1700 0x20>;
interrupts = <9 0x8>;
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 {
#address-cells = <1>;
#size-cells = <0>;
compatible = "fsl,mpc5121-i2c", "fsl-i2c";
cell-index = <1>;
reg = <0x1720 0x20>;
interrupts = <10 0x8>;
interrupt-parent = < &ipic >;
@ -225,7 +237,6 @@
#address-cells = <1>;
#size-cells = <0>;
compatible = "fsl,mpc5121-i2c", "fsl-i2c";
cell-index = <2>;
reg = <0x1740 0x20>;
interrupts = <11 0x8>;
interrupt-parent = < &ipic >;
@ -244,7 +255,7 @@
};
display@2100 {
compatible = "fsl,mpc5121-diu", "fsl-diu";
compatible = "fsl,mpc5121-diu";
reg = <0x2100 0x100>;
interrupts = <64 0x8>;
interrupt-parent = < &ipic >;
@ -277,7 +288,7 @@
// USB1 using external ULPI PHY
//usb@3000 {
// compatible = "fsl,mpc5121-usb2-dr", "fsl-usb2-dr";
// compatible = "fsl,mpc5121-usb2-dr";
// reg = <0x3000 0x1000>;
// #address-cells = <1>;
// #size-cells = <0>;
@ -285,12 +296,11 @@
// interrupts = <43 0x8>;
// dr_mode = "otg";
// phy_type = "ulpi";
// port1;
//};
// USB0 using internal UTMI PHY
usb@4000 {
compatible = "fsl,mpc5121-usb2-dr", "fsl-usb2-dr";
compatible = "fsl,mpc5121-usb2-dr";
reg = <0x4000 0x1000>;
#address-cells = <1>;
#size-cells = <0>;
@ -298,7 +308,8 @@
interrupts = <44 0x8>;
dr_mode = "otg";
phy_type = "utmi_wide";
port0;
fsl,invert-drvvbus;
fsl,invert-pwr-fault;
};
// IO control
@ -365,7 +376,7 @@
};
dma@14000 {
compatible = "fsl,mpc5121-dma2";
compatible = "fsl,mpc5121-dma";
reg = <0x14000 0x1800>;
interrupts = <65 0x8>;
interrupt-parent = < &ipic >;

1694
arch/powerpc/configs/mpc512x_defconfig Normal file
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File diff suppressed because it is too large Load Diff

24
arch/powerpc/include/asm/mpc5121.h Normal file
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@ -0,0 +1,24 @@
/*
* 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__ */

4
arch/powerpc/include/asm/mpc52xx_psc.h
View File

@ -25,7 +25,11 @@
#include <asm/types.h>
/* Max number of PSCs */
#ifdef CONFIG_PPC_MPC512x
#define MPC52xx_PSC_MAXNUM 12
#else
#define MPC52xx_PSC_MAXNUM 6
#endif
/* Programmable Serial Controller (PSC) status register bits */
#define MPC52xx_PSC_SR_UNEX_RX 0x0001

6
arch/powerpc/platforms/512x/clock.c
View File

@ -698,8 +698,7 @@ static struct clk_interface mpc5121_clk_functions = {
.clk_get_parent = NULL,
};
static int
mpc5121_clk_init(void)
int __init mpc5121_clk_init(void)
{
struct device_node *np;
@ -724,6 +723,3 @@ mpc5121_clk_init(void)
clk_functions = mpc5121_clk_functions;
return 0;
}
arch_initcall(mpc5121_clk_init);

3
arch/powerpc/platforms/512x/mpc5121_ads.c
View File

@ -64,8 +64,9 @@ define_machine(mpc5121_ads) {
.name = "MPC5121 ADS",
.probe = mpc5121_ads_probe,
.setup_arch = mpc5121_ads_setup_arch,
.init = mpc512x_declare_of_platform_devices,
.init = mpc512x_init,
.init_IRQ = mpc5121_ads_init_IRQ,
.get_irq = ipic_get_irq,
.calibrate_decr = generic_calibrate_decr,
.restart = mpc512x_restart,
};

3
arch/powerpc/platforms/512x/mpc5121_generic.c
View File

@ -51,8 +51,9 @@ static int __init mpc5121_generic_probe(void)
define_machine(mpc5121_generic) {
.name = "MPC5121 generic",
.probe = mpc5121_generic_probe,
.init = mpc512x_declare_of_platform_devices,
.init = mpc512x_init,
.init_IRQ = mpc512x_init_IRQ,
.get_irq = ipic_get_irq,
.calibrate_decr = generic_calibrate_decr,
.restart = mpc512x_restart,
};

3
arch/powerpc/platforms/512x/mpc512x.h
View File

@ -12,5 +12,8 @@
#ifndef __MPC512X_H__
#define __MPC512X_H__
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);
extern void mpc512x_restart(char *cmd);
#endif /* __MPC512X_H__ */

43
arch/powerpc/platforms/512x/mpc512x_shared.c
View File

@ -21,9 +21,38 @@
#include <asm/ipic.h>
#include <asm/prom.h>
#include <asm/time.h>
#include <asm/mpc5121.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)
{
struct device_node *np;
@ -53,8 +82,22 @@ static struct of_device_id __initdata of_bus_ids[] = {
void __init mpc512x_declare_of_platform_devices(void)
{
struct device_node *np;
if (of_platform_bus_probe(NULL, of_bus_ids, NULL))
printk(KERN_ERR __FILE__ ": "
"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();
}

10
drivers/rtc/Kconfig
View File

@ -868,4 +868,14 @@ config RTC_DRV_MC13783
help
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

1
drivers/rtc/Makefile
View File

@ -55,6 +55,7 @@ obj-$(CONFIG_RTC_DRV_MAX6900) += rtc-max6900.o
obj-$(CONFIG_RTC_DRV_MAX6902) += rtc-max6902.o
obj-$(CONFIG_RTC_DRV_MC13783) += rtc-mc13783.o
obj-$(CONFIG_RTC_DRV_MSM6242) += rtc-msm6242.o
obj-$(CONFIG_RTC_DRV_MPC5121) += rtc-mpc5121.o
obj-$(CONFIG_RTC_DRV_MV) += rtc-mv.o
obj-$(CONFIG_RTC_DRV_NUC900) += rtc-nuc900.o
obj-$(CONFIG_RTC_DRV_OMAP) += rtc-omap.o

387
drivers/rtc/rtc-mpc5121.c Normal file
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@ -0,0 +1,387 @@
/*
* 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>");

251
drivers/serial/mpc52xx_uart.c
View File

@ -74,6 +74,7 @@
#include <linux/io.h>
#include <linux/of.h>
#include <linux/of_platform.h>
#include <linux/clk.h>
#include <asm/mpc52xx.h>
#include <asm/mpc52xx_psc.h>
@ -113,6 +114,7 @@ static void mpc52xx_uart_of_enumerate(void);
/* Forward declaration of the interruption handling routine */
static irqreturn_t mpc52xx_uart_int(int irq, void *dev_id);
static irqreturn_t mpc5xxx_uart_process_int(struct uart_port *port);
/* Simple macro to test if a port is console or not. This one is taken
@ -145,6 +147,11 @@ struct psc_ops {
void (*cw_disable_ints)(struct uart_port *port);
void (*cw_restore_ints)(struct uart_port *port);
unsigned long (*getuartclk)(void *p);
int (*clock)(struct uart_port *port, int enable);
int (*fifoc_init)(void);
void (*fifoc_uninit)(void);
void (*get_irq)(struct uart_port *, struct device_node *);
irqreturn_t (*handle_irq)(struct uart_port *port);
};
#ifdef CONFIG_PPC_MPC52xx
@ -256,6 +263,18 @@ static unsigned long mpc52xx_getuartclk(void *p)
return mpc5xxx_get_bus_frequency(p) / 2;
}
static void mpc52xx_psc_get_irq(struct uart_port *port, struct device_node *np)
{
port->irqflags = IRQF_DISABLED;
port->irq = irq_of_parse_and_map(np, 0);
}
/* 52xx specific interrupt handler. The caller holds the port lock */
static irqreturn_t mpc52xx_psc_handle_irq(struct uart_port *port)
{
return mpc5xxx_uart_process_int(port);
}
static struct psc_ops mpc52xx_psc_ops = {
.fifo_init = mpc52xx_psc_fifo_init,
.raw_rx_rdy = mpc52xx_psc_raw_rx_rdy,
@ -273,14 +292,32 @@ static struct psc_ops mpc52xx_psc_ops = {
.cw_disable_ints = mpc52xx_psc_cw_disable_ints,
.cw_restore_ints = mpc52xx_psc_cw_restore_ints,
.getuartclk = mpc52xx_getuartclk,
.get_irq = mpc52xx_psc_get_irq,
.handle_irq = mpc52xx_psc_handle_irq,
};
#endif /* CONFIG_MPC52xx */
#ifdef CONFIG_PPC_MPC512x
#define FIFO_512x(port) ((struct mpc512x_psc_fifo __iomem *)(PSC(port)+1))
/* PSC FIFO Controller for mpc512x */
struct psc_fifoc {
u32 fifoc_cmd;
u32 fifoc_int;
u32 fifoc_dma;
u32 fifoc_axe;
u32 fifoc_debug;
};
static struct psc_fifoc __iomem *psc_fifoc;
static unsigned int psc_fifoc_irq;
static void mpc512x_psc_fifo_init(struct uart_port *port)
{
/* /32 prescaler */
out_be16(&PSC(port)->mpc52xx_psc_clock_select, 0xdd00);
out_be32(&FIFO_512x(port)->txcmd, MPC512x_PSC_FIFO_RESET_SLICE);
out_be32(&FIFO_512x(port)->txcmd, MPC512x_PSC_FIFO_ENABLE_SLICE);
out_be32(&FIFO_512x(port)->txalarm, 1);
@ -393,6 +430,160 @@ static unsigned long mpc512x_getuartclk(void *p)
return mpc5xxx_get_bus_frequency(p);
}
#define DEFAULT_FIFO_SIZE 16
static unsigned int __init get_fifo_size(struct device_node *np,
char *fifo_name)
{
const unsigned int *fp;
fp = of_get_property(np, fifo_name, NULL);
if (fp)
return *fp;
pr_warning("no %s property in %s node, defaulting to %d\n",
fifo_name, np->full_name, DEFAULT_FIFO_SIZE);
return DEFAULT_FIFO_SIZE;
}
#define FIFOC(_base) ((struct mpc512x_psc_fifo __iomem *) \
((u32)(_base) + sizeof(struct mpc52xx_psc)))
/* Init PSC FIFO Controller */
static int __init mpc512x_psc_fifoc_init(void)
{
struct device_node *np;
void __iomem *psc;
unsigned int tx_fifo_size;
unsigned int rx_fifo_size;
int fifobase = 0; /* current fifo address in 32 bit words */
np = of_find_compatible_node(NULL, NULL,
"fsl,mpc5121-psc-fifo");
if (!np) {
pr_err("%s: Can't find FIFOC node\n", __func__);
return -ENODEV;
}
psc_fifoc = of_iomap(np, 0);
if (!psc_fifoc) {
pr_err("%s: Can't map FIFOC\n", __func__);
return -ENODEV;
}
psc_fifoc_irq = irq_of_parse_and_map(np, 0);
of_node_put(np);
if (psc_fifoc_irq == NO_IRQ) {
pr_err("%s: Can't get FIFOC irq\n", __func__);
iounmap(psc_fifoc);
return -ENODEV;
}
for_each_compatible_node(np, NULL, "fsl,mpc5121-psc-uart") {
tx_fifo_size = get_fifo_size(np, "fsl,tx-fifo-size");
rx_fifo_size = get_fifo_size(np, "fsl,rx-fifo-size");
/* size in register is in 4 byte units */
tx_fifo_size /= 4;
rx_fifo_size /= 4;
if (!tx_fifo_size)
tx_fifo_size = 1;
if (!rx_fifo_size)
rx_fifo_size = 1;
psc = of_iomap(np, 0);
if (!psc) {
pr_err("%s: Can't map %s device\n",
__func__, np->full_name);
continue;
}
/* FIFO space is 4KiB, check if requested size is available */
if ((fifobase + tx_fifo_size + rx_fifo_size) > 0x1000) {
pr_err("%s: no fifo space available for %s\n",
__func__, np->full_name);
iounmap(psc);
/*
* chances are that another device requests less
* fifo space, so we continue.
*/
continue;
}
/* set tx and rx fifo size registers */
out_be32(&FIFOC(psc)->txsz, (fifobase << 16) | tx_fifo_size);
fifobase += tx_fifo_size;
out_be32(&FIFOC(psc)->rxsz, (fifobase << 16) | rx_fifo_size);
fifobase += rx_fifo_size;
/* reset and enable the slices */
out_be32(&FIFOC(psc)->txcmd, 0x80);
out_be32(&FIFOC(psc)->txcmd, 0x01);
out_be32(&FIFOC(psc)->rxcmd, 0x80);
out_be32(&FIFOC(psc)->rxcmd, 0x01);
iounmap(psc);
}
return 0;
}
static void __exit mpc512x_psc_fifoc_uninit(void)
{
iounmap(psc_fifoc);
}
/* 512x specific interrupt handler. The caller holds the port lock */
static irqreturn_t mpc512x_psc_handle_irq(struct uart_port *port)
{
unsigned long fifoc_int;
int psc_num;
/* Read pending PSC FIFOC interrupts */
fifoc_int = in_be32(&psc_fifoc->fifoc_int);
/* Check if it is an interrupt for this port */
psc_num = (port->mapbase & 0xf00) >> 8;
if (test_bit(psc_num, &fifoc_int) ||
test_bit(psc_num + 16, &fifoc_int))
return mpc5xxx_uart_process_int(port);
return IRQ_NONE;
}
static int mpc512x_psc_clock(struct uart_port *port, int enable)
{
struct clk *psc_clk;
int psc_num;
char clk_name[10];
if (uart_console(port))
return 0;
psc_num = (port->mapbase & 0xf00) >> 8;
snprintf(clk_name, sizeof(clk_name), "psc%d_clk", psc_num);
psc_clk = clk_get(port->dev, clk_name);
if (IS_ERR(psc_clk)) {
dev_err(port->dev, "Failed to get PSC clock entry!\n");
return -ENODEV;
}
dev_dbg(port->dev, "%s %sable\n", clk_name, enable ? "en" : "dis");
if (enable)
clk_enable(psc_clk);
else
clk_disable(psc_clk);
return 0;
}
static void mpc512x_psc_get_irq(struct uart_port *port, struct device_node *np)
{
port->irqflags = IRQF_SHARED;
port->irq = psc_fifoc_irq;
}
static struct psc_ops mpc512x_psc_ops = {
.fifo_init = mpc512x_psc_fifo_init,
.raw_rx_rdy = mpc512x_psc_raw_rx_rdy,
@ -410,6 +601,11 @@ static struct psc_ops mpc512x_psc_ops = {
.cw_disable_ints = mpc512x_psc_cw_disable_ints,
.cw_restore_ints = mpc512x_psc_cw_restore_ints,
.getuartclk = mpc512x_getuartclk,
.clock = mpc512x_psc_clock,
.fifoc_init = mpc512x_psc_fifoc_init,
.fifoc_uninit = mpc512x_psc_fifoc_uninit,
.get_irq = mpc512x_psc_get_irq,
.handle_irq = mpc512x_psc_handle_irq,
};
#endif
@ -519,10 +715,15 @@ mpc52xx_uart_startup(struct uart_port *port)
struct mpc52xx_psc __iomem *psc = PSC(port);
int ret;
if (psc_ops->clock) {
ret = psc_ops->clock(port, 1);
if (ret)
return ret;
}
/* Request IRQ */
ret = request_irq(port->irq, mpc52xx_uart_int,
IRQF_DISABLED | IRQF_SAMPLE_RANDOM,
"mpc52xx_psc_uart", port);
port->irqflags, "mpc52xx_psc_uart", port);
if (ret)
return ret;
@ -553,6 +754,9 @@ mpc52xx_uart_shutdown(struct uart_port *port)
port->read_status_mask = 0;
out_be16(&psc->mpc52xx_psc_imr, port->read_status_mask);
if (psc_ops->clock)
psc_ops->clock(port, 0);
/* Release interrupt */
free_irq(port->irq, port);
}
@ -851,15 +1055,12 @@ mpc52xx_uart_int_tx_chars(struct uart_port *port)
}
static irqreturn_t
mpc52xx_uart_int(int irq, void *dev_id)
mpc5xxx_uart_process_int(struct uart_port *port)
{
struct uart_port *port = dev_id;
unsigned long pass = ISR_PASS_LIMIT;
unsigned int keepgoing;
u8 status;
spin_lock(&port->lock);
/* While we have stuff to do, we continue */
do {
/* If we don't find anything to do, we stop */
@ -886,11 +1087,23 @@ mpc52xx_uart_int(int irq, void *dev_id)
} while (keepgoing);
spin_unlock(&port->lock);
return IRQ_HANDLED;
}
static irqreturn_t
mpc52xx_uart_int(int irq, void *dev_id)
{
struct uart_port *port = dev_id;
irqreturn_t ret;
spin_lock(&port->lock);
ret = psc_ops->handle_irq(port);
spin_unlock(&port->lock);
return ret;
}
/* ======================================================================== */
/* Console ( if applicable ) */
@ -1152,7 +1365,7 @@ mpc52xx_uart_of_probe(struct of_device *op, const struct of_device_id *match)
return -EINVAL;
}
port->irq = irq_of_parse_and_map(op->node, 0);
psc_ops->get_irq(port, op->node);
if (port->irq == NO_IRQ) {
dev_dbg(&op->dev, "Could not get irq\n");
return -EINVAL;
@ -1163,10 +1376,8 @@ mpc52xx_uart_of_probe(struct of_device *op, const struct of_device_id *match)
/* Add the port to the uart sub-system */
ret = uart_add_one_port(&mpc52xx_uart_driver, port);
if (ret) {
irq_dispose_mapping(port->irq);
if (ret)
return ret;
}
dev_set_drvdata(&op->dev, (void *)port);
return 0;
@ -1178,10 +1389,8 @@ mpc52xx_uart_of_remove(struct of_device *op)
struct uart_port *port = dev_get_drvdata(&op->dev);
dev_set_drvdata(&op->dev, NULL);
if (port) {
if (port)
uart_remove_one_port(&mpc52xx_uart_driver, port);
irq_dispose_mapping(port->irq);
}
return 0;
}
@ -1288,6 +1497,15 @@ mpc52xx_uart_init(void)
mpc52xx_uart_of_enumerate();
/*
* Map the PSC FIFO Controller and init if on MPC512x.
*/
if (psc_ops->fifoc_init) {
ret = psc_ops->fifoc_init();
if (ret)
return ret;
}
ret = of_register_platform_driver(&mpc52xx_uart_of_driver);
if (ret) {
printk(KERN_ERR "%s: of_register_platform_driver failed (%i)\n",
@ -1302,6 +1520,9 @@ mpc52xx_uart_init(void)
static void __exit
mpc52xx_uart_exit(void)
{
if (psc_ops->fifoc_uninit)
psc_ops->fifoc_uninit();
of_unregister_platform_driver(&mpc52xx_uart_of_driver);
uart_unregister_driver(&mpc52xx_uart_driver);
}

5
drivers/video/fsl-diu-fb.c
View File

@ -1633,6 +1633,11 @@ static int __init fsl_diu_setup(char *options)
#endif
static struct of_device_id fsl_diu_match[] = {
#ifdef CONFIG_PPC_MPC512x
{
.compatible = "fsl,mpc5121-diu",
},
#endif
{
.compatible = "fsl,diu",
},