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Commit 1f7d4f83 authored by Paul Mackerras's avatar Paul Mackerras
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Merge branch 'for-2.6.25' of git://git.secretlab.ca/git/linux-2.6-mpc52xx into for-2.6.25

parents b370b082 25ae3a07
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arch/powerpc/Kconfig
View file @ 1f7d4f83
......@@ -512,7 +512,7 @@ config PCI
bool "PCI support" if 40x || CPM2 || PPC_83xx || PPC_85xx || PPC_86xx \
|| PPC_MPC52xx || (EMBEDDED && (PPC_PSERIES || PPC_ISERIES)) \
|| PPC_PS3 || 44x
default y if !40x && !CPM2 && !8xx && !PPC_83xx \
default y if !40x && !CPM2 && !8xx && !PPC_MPC512x && !PPC_83xx \
&& !PPC_85xx && !PPC_86xx
default PCI_PERMEDIA if !4xx && !CPM2 && !8xx
default PCI_QSPAN if !4xx && !CPM2 && 8xx
......
arch/powerpc/boot/dts/mpc5121ads.dts 0 → 100644
View file @ 1f7d4f83
/*
* MPC5121E MDS Device Tree Source
*
* Copyright 2007 Freescale Semiconductor Inc.
*
* 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.
*/
/dts-v1/;
/ {
model = "mpc5121ads";
compatible = "fsl,mpc5121ads";
#address-cells = <1>;
#size-cells = <1>;
cpus {
#address-cells = <1>;
#size-cells = <0>;
PowerPC,5121@0 {
device_type = "cpu";
reg = <0>;
d-cache-line-size = <0x20>; // 32 bytes
i-cache-line-size = <0x20>; // 32 bytes
d-cache-size = <0x8000>; // L1, 32K
i-cache-size = <0x8000>; // L1, 32K
timebase-frequency = <49500000>;// 49.5 MHz (csb/4)
bus-frequency = <198000000>; // 198 MHz csb bus
clock-frequency = <396000000>; // 396 MHz ppc core
};
};
memory {
device_type = "memory";
reg = <0x00000000 0x10000000>; // 256MB at 0
};
localbus@80000020 {
compatible = "fsl,mpc5121ads-localbus";
#address-cells = <2>;
#size-cells = <1>;
reg = <0x80000020 0x40>;
ranges = <0x0 0x0 0xfc000000 0x04000000
0x2 0x0 0x82000000 0x00008000>;
flash@0,0 {
compatible = "cfi-flash";
reg = <0 0x0 0x4000000>;
bank-width = <4>;
device-width = <1>;
};
board-control@2,0 {
compatible = "fsl,mpc5121ads-cpld";
reg = <0x2 0x0 0x8000>;
};
};
soc@80000000 {
compatible = "fsl,mpc5121-immr";
#address-cells = <1>;
#size-cells = <1>;
#interrupt-cells = <2>;
ranges = <0x0 0x80000000 0x400000>;
reg = <0x80000000 0x400000>;
bus-frequency = <66000000>; // 66 MHz ips bus
// IPIC
// interrupts cell = <intr #, sense>
// sense values match linux IORESOURCE_IRQ_* defines:
// sense == 8: Level, low assertion
// sense == 2: Edge, high-to-low change
//
ipic: interrupt-controller@c00 {
compatible = "fsl,mpc5121-ipic", "fsl,ipic";
interrupt-controller;
#address-cells = <0>;
#interrupt-cells = <2>;
reg = <0xc00 0x100>;
};
// 512x PSCs are not 52xx PSCs compatible
// PSC3 serial port A aka ttyPSC0
serial@11300 {
device_type = "serial";
compatible = "fsl,mpc5121-psc-uart";
// Logical port assignment needed until driver
// learns to use aliases
port-number = <0>;
cell-index = <3>;
reg = <0x11300 0x100>;
interrupts = <0x28 0x8>; // actually the fifo irq
interrupt-parent = < &ipic >;
};
// PSC4 serial port B aka ttyPSC1
serial@11400 {
device_type = "serial";
compatible = "fsl,mpc5121-psc-uart";
// Logical port assignment needed until driver
// learns to use aliases
port-number = <1>;
cell-index = <4>;
reg = <0x11400 0x100>;
interrupts = <0x28 0x8>; // actually the fifo irq
interrupt-parent = < &ipic >;
};
pscsfifo@11f00 {
compatible = "fsl,mpc5121-psc-fifo";
reg = <0x11f00 0x100>;
interrupts = <0x28 0x8>;
interrupt-parent = < &ipic >;
};
};
};
arch/powerpc/platforms/512x/Kconfig 0 → 100644
View file @ 1f7d4f83
config PPC_MPC512x
bool
select FSL_SOC
select IPIC
default n
config PPC_MPC5121
bool
select PPC_MPC512x
default n
config MPC5121_ADS
bool "Freescale MPC5121E ADS"
depends on PPC_MULTIPLATFORM && PPC32
select DEFAULT_UIMAGE
select WANT_DEVICE_TREE
select PPC_MPC5121
help
This option enables support for the MPC5121E ADS board.
default n
arch/powerpc/platforms/512x/Makefile 0 → 100644
View file @ 1f7d4f83
#
# Makefile for the Freescale PowerPC 512x linux kernel.
#
obj-$(CONFIG_MPC5121_ADS) += mpc5121_ads.o
arch/powerpc/platforms/512x/mpc5121_ads.c 0 → 100644
View file @ 1f7d4f83
/*
* Copyright (C) 2007 Freescale Semiconductor, Inc. All rights reserved.
*
* Author: John Rigby, <jrigby@freescale.com>, Thur Mar 29 2007
*
* Description:
* MPC5121 ADS board setup
*
* This 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.
*
*/
#include <linux/kernel.h>
#include <linux/io.h>
#include <linux/irq.h>
#include <linux/of_platform.h>
#include <asm/machdep.h>
#include <asm/ipic.h>
#include <asm/prom.h>
#include <asm/time.h>
/**
* mpc512x_find_ips_freq - Find the IPS bus frequency for a device
* @node: device node
*
* Returns IPS bus frequency, or 0 if the bus frequency cannot be found.
*/
unsigned long
mpc512x_find_ips_freq(struct device_node *node)
{
struct device_node *np;
const unsigned int *p_ips_freq = NULL;
of_node_get(node);
while (node) {
p_ips_freq = of_get_property(node, "bus-frequency", NULL);
if (p_ips_freq)
break;
np = of_get_parent(node);
of_node_put(node);
node = np;
}
if (node)
of_node_put(node);
return p_ips_freq ? *p_ips_freq : 0;
}
EXPORT_SYMBOL(mpc512x_find_ips_freq);
static struct of_device_id __initdata of_bus_ids[] = {
{ .name = "soc", },
{ .name = "localbus", },
{},
};
static void __init mpc5121_ads_declare_of_platform_devices(void)
{
/* Find every child of the SOC node and add it to of_platform */
if (of_platform_bus_probe(NULL, of_bus_ids, NULL))
printk(KERN_ERR __FILE__ ": "
"Error while probing of_platform bus\n");
}
static void __init mpc5121_ads_init_IRQ(void)
{
struct device_node *np;
np = of_find_compatible_node(NULL, NULL, "fsl,ipic");
if (!np)
return;
ipic_init(np, 0);
of_node_put(np);
/*
* Initialize the default interrupt mapping priorities,
* in case the boot rom changed something on us.
*/
ipic_set_default_priority();
}
/*
* Called very early, MMU is off, device-tree isn't unflattened
*/
static int __init mpc5121_ads_probe(void)
{
unsigned long root = of_get_flat_dt_root();
return of_flat_dt_is_compatible(root, "fsl,mpc5121ads");
}
define_machine(mpc5121_ads) {
.name = "MPC5121 ADS",
.probe = mpc5121_ads_probe,
.init = mpc5121_ads_declare_of_platform_devices,
.init_IRQ = mpc5121_ads_init_IRQ,
.get_irq = ipic_get_irq,
.calibrate_decr = generic_calibrate_decr,
};
arch/powerpc/platforms/Kconfig
View file @ 1f7d4f83
......@@ -42,6 +42,7 @@ config CLASSIC32
source "arch/powerpc/platforms/pseries/Kconfig"
source "arch/powerpc/platforms/iseries/Kconfig"
source "arch/powerpc/platforms/chrp/Kconfig"
source "arch/powerpc/platforms/512x/Kconfig"
source "arch/powerpc/platforms/52xx/Kconfig"
source "arch/powerpc/platforms/powermac/Kconfig"
source "arch/powerpc/platforms/prep/Kconfig"
......
arch/powerpc/platforms/Kconfig.cputype
View file @ 1f7d4f83
......@@ -14,7 +14,7 @@ choice
There are five families of 32 bit PowerPC chips supported.
The most common ones are the desktop and server CPUs (601, 603,
604, 740, 750, 74xx) CPUs from Freescale and IBM, with their
embedded 52xx/82xx/83xx/86xx counterparts.
embedded 512x/52xx/82xx/83xx/86xx counterparts.
The other embeeded parts, namely 4xx, 8xx, e200 (55xx) and e500
(85xx) each form a family of their own that is not compatible
with the others.
......@@ -22,7 +22,7 @@ choice
If unsure, select 52xx/6xx/7xx/74xx/82xx/83xx/86xx.
config 6xx
bool "52xx/6xx/7xx/74xx/82xx/83xx/86xx"
bool "512x/52xx/6xx/7xx/74xx/82xx/83xx/86xx"
select PPC_FPU
config PPC_85xx
......@@ -225,7 +225,7 @@ config NR_CPUS
config NOT_COHERENT_CACHE
bool
depends on 4xx || 8xx || E200
depends on 4xx || 8xx || E200 || PPC_MPC512x
default y
config CHECK_CACHE_COHERENCY
......
arch/powerpc/platforms/Makefile
View file @ 1f7d4f83
......@@ -11,6 +11,7 @@ endif
obj-$(CONFIG_PPC_CHRP) += chrp/
obj-$(CONFIG_40x) += 40x/
obj-$(CONFIG_44x) += 44x/
obj-$(CONFIG_PPC_MPC512x) += 512x/
obj-$(CONFIG_PPC_MPC52xx) += 52xx/
obj-$(CONFIG_PPC_8xx) += 8xx/
obj-$(CONFIG_PPC_82xx) += 82xx/
......
drivers/serial/Kconfig
View file @ 1f7d4f83
......@@ -1138,17 +1138,17 @@ config SERIAL_SGI_L1_CONSOLE
say Y. Otherwise, say N.
config SERIAL_MPC52xx
tristate "Freescale MPC52xx family PSC serial support"
depends on PPC_MPC52xx
tristate "Freescale MPC52xx/MPC512x family PSC serial support"
depends on PPC_MPC52xx || PPC_MPC512x
select SERIAL_CORE
help
This drivers support the MPC52xx PSC serial ports. If you would
like to use them, you must answer Y or M to this option. Not that
This driver supports MPC52xx and MPC512x PSC serial ports. If you would
like to use them, you must answer Y or M to this option. Note that
for use as console, it must be included in kernel and not as a
module.
config SERIAL_MPC52xx_CONSOLE
bool "Console on a Freescale MPC52xx family PSC serial port"
bool "Console on a Freescale MPC52xx/MPC512x family PSC serial port"
depends on SERIAL_MPC52xx=y
select SERIAL_CORE_CONSOLE
help
......@@ -1156,7 +1156,7 @@ config SERIAL_MPC52xx_CONSOLE
of the Freescale MPC52xx family as a console.
config SERIAL_MPC52xx_CONSOLE_BAUD
int "Freescale MPC52xx family PSC serial port baud"
int "Freescale MPC52xx/MPC512x family PSC serial port baud"
depends on SERIAL_MPC52xx_CONSOLE=y
default "9600"
help
......
drivers/serial/mpc52xx_uart.c
View file @ 1f7d4f83
......@@ -16,6 +16,9 @@
* Some of the code has been inspired/copied from the 2.4 code written
* by Dale Farnsworth <dfarnsworth@mvista.com>.
*
* Copyright (C) 2008 Freescale Semiconductor Inc.
* John Rigby <jrigby@gmail.com>
* Added support for MPC5121
* Copyright (C) 2006 Secret Lab Technologies Ltd.
* Grant Likely <grant.likely@secretlab.ca>
* Copyright (C) 2004-2006 Sylvain Munaut <tnt@246tNt.com>
......@@ -67,7 +70,6 @@
#include <linux/serial.h>
#include <linux/sysrq.h>
#include <linux/console.h>
#include <linux/delay.h>
#include <linux/io.h>
......@@ -79,6 +81,7 @@
#endif
#include <asm/mpc52xx.h>
#include <asm/mpc512x.h>
#include <asm/mpc52xx_psc.h>
#if defined(CONFIG_SERIAL_MPC52xx_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
......@@ -111,8 +114,8 @@ static struct device_node *mpc52xx_uart_nodes[MPC52xx_PSC_MAXNUM];
static void mpc52xx_uart_of_enumerate(void);
#endif
#define PSC(port) ((struct mpc52xx_psc __iomem *)((port)->membase))
#define FIFO(port) ((struct mpc52xx_psc_fifo __iomem *)(PSC(port)+1))
/* Forward declaration of the interruption handling routine */
......@@ -130,13 +133,324 @@ static irqreturn_t mpc52xx_uart_int(int irq, void *dev_id);
#if defined(CONFIG_PPC_MERGE)
static struct of_device_id mpc52xx_uart_of_match[] = {
{ .type = "serial", .compatible = "fsl,mpc5200-psc-uart", },
{ .type = "serial", .compatible = "mpc5200-psc-uart", }, /* lite5200 */
{ .type = "serial", .compatible = "mpc5200-serial", }, /* efika */
#ifdef CONFIG_PPC_MPC52xx
{ .compatible = "fsl,mpc5200-psc-uart", .data = &mpc52xx_psc_ops, },
/* binding used by old lite5200 device trees: */
{ .compatible = "mpc5200-psc-uart", .data = &mpc52xx_psc_ops, },
/* binding used by efika: */
{ .compatible = "mpc5200-serial", .data = &mpc52xx_psc_ops, },
#endif
#ifdef CONFIG_PPC_MPC512x
{ .compatible = "fsl,mpc5121-psc-uart", .data = &mpc512x_psc_ops, },
{},
#endif
};
#if defined(CONFIG_PPC_MERGE)
static const struct of_device_id mpc52xx_uart_of_match[] = {
{.type = "serial",
.compatible = "mpc5200-psc-uart",
#endif
{},
};
#endif
#endif
/* ======================================================================== */
/* PSC fifo operations for isolating differences between 52xx and 512x */
/* ======================================================================== */
struct psc_ops {
void (*fifo_init)(struct uart_port *port);
int (*raw_rx_rdy)(struct uart_port *port);
int (*raw_tx_rdy)(struct uart_port *port);
int (*rx_rdy)(struct uart_port *port);
int (*tx_rdy)(struct uart_port *port);
int (*tx_empty)(struct uart_port *port);
void (*stop_rx)(struct uart_port *port);
void (*start_tx)(struct uart_port *port);
void (*stop_tx)(struct uart_port *port);
void (*rx_clr_irq)(struct uart_port *port);
void (*tx_clr_irq)(struct uart_port *port);
void (*write_char)(struct uart_port *port, unsigned char c);
unsigned char (*read_char)(struct uart_port *port);
void (*cw_disable_ints)(struct uart_port *port);
void (*cw_restore_ints)(struct uart_port *port);
unsigned long (*getuartclk)(void *p);
};
#ifdef CONFIG_PPC_MPC52xx
#define FIFO_52xx(port) ((struct mpc52xx_psc_fifo __iomem *)(PSC(port)+1))
static void mpc52xx_psc_fifo_init(struct uart_port *port)
{
struct mpc52xx_psc __iomem *psc = PSC(port);
struct mpc52xx_psc_fifo __iomem *fifo = FIFO_52xx(port);
/* /32 prescaler */
out_be16(&psc->mpc52xx_psc_clock_select, 0xdd00);
out_8(&fifo->rfcntl, 0x00);
out_be16(&fifo->rfalarm, 0x1ff);
out_8(&fifo->tfcntl, 0x07);
out_be16(&fifo->tfalarm, 0x80);
port->read_status_mask |= MPC52xx_PSC_IMR_RXRDY | MPC52xx_PSC_IMR_TXRDY;
out_be16(&psc->mpc52xx_psc_imr, port->read_status_mask);
}
static int mpc52xx_psc_raw_rx_rdy(struct uart_port *port)
{
return in_be16(&PSC(port)->mpc52xx_psc_status)
& MPC52xx_PSC_SR_RXRDY;
}
static int mpc52xx_psc_raw_tx_rdy(struct uart_port *port)
{
return in_be16(&PSC(port)->mpc52xx_psc_status)
& MPC52xx_PSC_SR_TXRDY;
}
static int mpc52xx_psc_rx_rdy(struct uart_port *port)
{
return in_be16(&PSC(port)->mpc52xx_psc_isr)
& port->read_status_mask
& MPC52xx_PSC_IMR_RXRDY;
}
static int mpc52xx_psc_tx_rdy(struct uart_port *port)
{
return in_be16(&PSC(port)->mpc52xx_psc_isr)
& port->read_status_mask
& MPC52xx_PSC_IMR_TXRDY;
}
static int mpc52xx_psc_tx_empty(struct uart_port *port)
{
return in_be16(&PSC(port)->mpc52xx_psc_status)
& MPC52xx_PSC_SR_TXEMP;
}
static void mpc52xx_psc_start_tx(struct uart_port *port)
{
port->read_status_mask |= MPC52xx_PSC_IMR_TXRDY;
out_be16(&PSC(port)->mpc52xx_psc_imr, port->read_status_mask);
}
static void mpc52xx_psc_stop_tx(struct uart_port *port)
{
port->read_status_mask &= ~MPC52xx_PSC_IMR_TXRDY;
out_be16(&PSC(port)->mpc52xx_psc_imr, port->read_status_mask);
}
static void mpc52xx_psc_stop_rx(struct uart_port *port)
{
port->read_status_mask &= ~MPC52xx_PSC_IMR_RXRDY;
out_be16(&PSC(port)->mpc52xx_psc_imr, port->read_status_mask);
}
static void mpc52xx_psc_rx_clr_irq(struct uart_port *port)
{
}
static void mpc52xx_psc_tx_clr_irq(struct uart_port *port)
{
}
static void mpc52xx_psc_write_char(struct uart_port *port, unsigned char c)
{
out_8(&PSC(port)->mpc52xx_psc_buffer_8, c);
}
static unsigned char mpc52xx_psc_read_char(struct uart_port *port)
{
return in_8(&PSC(port)->mpc52xx_psc_buffer_8);
}
static void mpc52xx_psc_cw_disable_ints(struct uart_port *port)
{
out_be16(&PSC(port)->mpc52xx_psc_imr, 0);
}
static void mpc52xx_psc_cw_restore_ints(struct uart_port *port)
{
out_be16(&PSC(port)->mpc52xx_psc_imr, port->read_status_mask);
}
/* Search for bus-frequency property in this node or a parent */
static unsigned long mpc52xx_getuartclk(void *p)
{
#if defined(CONFIG_PPC_MERGE)
/*
* 5200 UARTs have a / 32 prescaler
* but the generic serial code assumes 16
* so return ipb freq / 2
*/
return mpc52xx_find_ipb_freq(p) / 2;
#else
pr_debug("unexpected call to mpc52xx_getuartclk with arch/ppc\n");
return NULL;
#endif
}
static struct psc_ops mpc52xx_psc_ops = {
.fifo_init = mpc52xx_psc_fifo_init,
.raw_rx_rdy = mpc52xx_psc_raw_rx_rdy,
.raw_tx_rdy = mpc52xx_psc_raw_tx_rdy,
.rx_rdy = mpc52xx_psc_rx_rdy,
.tx_rdy = mpc52xx_psc_tx_rdy,
.tx_empty = mpc52xx_psc_tx_empty,
.stop_rx = mpc52xx_psc_stop_rx,
.start_tx = mpc52xx_psc_start_tx,
.stop_tx = mpc52xx_psc_stop_tx,
.rx_clr_irq = mpc52xx_psc_rx_clr_irq,
.tx_clr_irq = mpc52xx_psc_tx_clr_irq,
.write_char = mpc52xx_psc_write_char,
.read_char = mpc52xx_psc_read_char,
.cw_disable_ints = mpc52xx_psc_cw_disable_ints,
.cw_restore_ints = mpc52xx_psc_cw_restore_ints,
.getuartclk = mpc52xx_getuartclk,
};
#endif /* CONFIG_MPC52xx */
#ifdef CONFIG_PPC_MPC512x
#define FIFO_512x(port) ((struct mpc512x_psc_fifo __iomem *)(PSC(port)+1))
static void mpc512x_psc_fifo_init(struct uart_port *port)
{
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);
out_be32(&FIFO_512x(port)->tximr, 0);
out_be32(&FIFO_512x(port)->rxcmd, MPC512x_PSC_FIFO_RESET_SLICE);
out_be32(&FIFO_512x(port)->rxcmd, MPC512x_PSC_FIFO_ENABLE_SLICE);
out_be32(&FIFO_512x(port)->rxalarm, 1);
out_be32(&FIFO_512x(port)->rximr, 0);
out_be32(&FIFO_512x(port)->tximr, MPC512x_PSC_FIFO_ALARM);
out_be32(&FIFO_512x(port)->rximr, MPC512x_PSC_FIFO_ALARM);
}
static int mpc512x_psc_raw_rx_rdy(struct uart_port *port)
{
return !(in_be32(&FIFO_512x(port)->rxsr) & MPC512x_PSC_FIFO_EMPTY);
}
static int mpc512x_psc_raw_tx_rdy(struct uart_port *port)
{
return !(in_be32(&FIFO_512x(port)->txsr) & MPC512x_PSC_FIFO_FULL);
}
static int mpc512x_psc_rx_rdy(struct uart_port *port)
{
return in_be32(&FIFO_512x(port)->rxsr)
& in_be32(&FIFO_512x(port)->rximr)
& MPC512x_PSC_FIFO_ALARM;
}
static int mpc512x_psc_tx_rdy(struct uart_port *port)
{
return in_be32(&FIFO_512x(port)->txsr)
& in_be32(&FIFO_512x(port)->tximr)
& MPC512x_PSC_FIFO_ALARM;
}
static int mpc512x_psc_tx_empty(struct uart_port *port)
{
return in_be32(&FIFO_512x(port)->txsr)
& MPC512x_PSC_FIFO_EMPTY;
}
static void mpc512x_psc_stop_rx(struct uart_port *port)
{
unsigned long rx_fifo_imr;
rx_fifo_imr = in_be32(&FIFO_512x(port)->rximr);
rx_fifo_imr &= ~MPC512x_PSC_FIFO_ALARM;
out_be32(&FIFO_512x(port)->rximr, rx_fifo_imr);
}
static void mpc512x_psc_start_tx(struct uart_port *port)
{
unsigned long tx_fifo_imr;
tx_fifo_imr = in_be32(&FIFO_512x(port)->tximr);
tx_fifo_imr |= MPC512x_PSC_FIFO_ALARM;
out_be32(&FIFO_512x(port)->tximr, tx_fifo_imr);
}
static void mpc512x_psc_stop_tx(struct uart_port *port)
{
unsigned long tx_fifo_imr;
tx_fifo_imr = in_be32(&FIFO_512x(port)->tximr);
tx_fifo_imr &= ~MPC512x_PSC_FIFO_ALARM;
out_be32(&FIFO_512x(port)->tximr, tx_fifo_imr);
}
static void mpc512x_psc_rx_clr_irq(struct uart_port *port)
{
out_be32(&FIFO_512x(port)->rxisr, in_be32(&FIFO_512x(port)->rxisr));
}
static void mpc512x_psc_tx_clr_irq(struct uart_port *port)
{
out_be32(&FIFO_512x(port)->txisr, in_be32(&FIFO_512x(port)->txisr));
}
static void mpc512x_psc_write_char(struct uart_port *port, unsigned char c)
{
out_8(&FIFO_512x(port)->txdata_8, c);
}
static unsigned char mpc512x_psc_read_char(struct uart_port *port)
{
return in_8(&FIFO_512x(port)->rxdata_8);
}
static void mpc512x_psc_cw_disable_ints(struct uart_port *port)
{
port->read_status_mask =
in_be32(&FIFO_512x(port)->tximr) << 16 |
in_be32(&FIFO_512x(port)->rximr);
out_be32(&FIFO_512x(port)->tximr, 0);
out_be32(&FIFO_512x(port)->rximr, 0);
}
static void mpc512x_psc_cw_restore_ints(struct uart_port *port)
{
out_be32(&FIFO_512x(port)->tximr,
(port->read_status_mask >> 16) & 0x7f);
out_be32(&FIFO_512x(port)->rximr, port->read_status_mask & 0x7f);
}
static unsigned long mpc512x_getuartclk(void *p)
{
return mpc512x_find_ips_freq(p);
}
static struct psc_ops mpc512x_psc_ops = {
.fifo_init = mpc512x_psc_fifo_init,
.raw_rx_rdy = mpc512x_psc_raw_rx_rdy,
.raw_tx_rdy = mpc512x_psc_raw_tx_rdy,
.rx_rdy = mpc512x_psc_rx_rdy,
.tx_rdy = mpc512x_psc_tx_rdy,
.tx_empty = mpc512x_psc_tx_empty,
.stop_rx = mpc512x_psc_stop_rx,
.start_tx = mpc512x_psc_start_tx,
.stop_tx = mpc512x_psc_stop_tx,
.rx_clr_irq = mpc512x_psc_rx_clr_irq,
.tx_clr_irq = mpc512x_psc_tx_clr_irq,
.write_char = mpc512x_psc_write_char,
.read_char = mpc512x_psc_read_char,
.cw_disable_ints = mpc512x_psc_cw_disable_ints,
.cw_restore_ints = mpc512x_psc_cw_restore_ints,
.getuartclk = mpc512x_getuartclk,
};
#endif
static struct psc_ops *psc_ops;
/* ======================================================================== */
/* UART operations */
......@@ -145,8 +459,7 @@ static struct of_device_id mpc52xx_uart_of_match[] = {
static unsigned int
mpc52xx_uart_tx_empty(struct uart_port *port)
{
int status = in_be16(&PSC(port)->mpc52xx_psc_status);
return (status & MPC52xx_PSC_SR_TXEMP) ? TIOCSER_TEMT : 0;
return psc_ops->tx_empty(port) ? TIOCSER_TEMT : 0;
}
static void
......@@ -166,16 +479,14 @@ static void
mpc52xx_uart_stop_tx(struct uart_port *port)
{
/* port->lock taken by caller */
port->read_status_mask &= ~MPC52xx_PSC_IMR_TXRDY;
out_be16(&PSC(port)->mpc52xx_psc_imr, port->read_status_mask);
psc_ops->stop_tx(port);
}
static void
mpc52xx_uart_start_tx(struct uart_port *port)
{
/* port->lock taken by caller */
port->read_status_mask |= MPC52xx_PSC_IMR_TXRDY;
out_be16(&PSC(port)->mpc52xx_psc_imr, port->read_status_mask);
psc_ops->start_tx(port);
}
static void
......@@ -188,8 +499,7 @@ mpc52xx_uart_send_xchar(struct uart_port *port, char ch)
if (ch) {
/* Make sure tx interrupts are on */
/* Truly necessary ??? They should be anyway */
port->read_status_mask |= MPC52xx_PSC_IMR_TXRDY;
out_be16(&PSC(port)->mpc52xx_psc_imr, port->read_status_mask);
psc_ops->start_tx(port);
}
spin_unlock_irqrestore(&port->lock, flags);
......@@ -199,8 +509,7 @@ static void
mpc52xx_uart_stop_rx(struct uart_port *port)
{
/* port->lock taken by caller */
port->read_status_mask &= ~MPC52xx_PSC_IMR_RXRDY;
out_be16(&PSC(port)->mpc52xx_psc_imr, port->read_status_mask);
psc_ops->stop_rx(port);
}
static void
......@@ -227,12 +536,12 @@ static int
mpc52xx_uart_startup(struct uart_port *port)
{
struct mpc52xx_psc __iomem *psc = PSC(port);
struct mpc52xx_psc_fifo __iomem *fifo = FIFO(port);
int ret;
/* Request IRQ */
ret = request_irq(port->irq, mpc52xx_uart_int,
IRQF_DISABLED | IRQF_SAMPLE_RANDOM, "mpc52xx_psc_uart", port);
IRQF_DISABLED | IRQF_SAMPLE_RANDOM | IRQF_SHARED,
"mpc52xx_psc_uart", port);
if (ret)
return ret;
......@@ -242,15 +551,7 @@ mpc52xx_uart_startup(struct uart_port *port)
out_be32(&psc->sicr, 0); /* UART mode DCD ignored */
out_be16(&psc->mpc52xx_psc_clock_select, 0xdd00); /* /16 prescaler on */
out_8(&fifo->rfcntl, 0x00);
out_be16(&fifo->rfalarm, 0x1ff);
out_8(&fifo->tfcntl, 0x07);
out_be16(&fifo->tfalarm, 0x80);
port->read_status_mask |= MPC52xx_PSC_IMR_RXRDY | MPC52xx_PSC_IMR_TXRDY;
out_be16(&psc->mpc52xx_psc_imr, port->read_status_mask);
psc_ops->fifo_init(port);
out_8(&psc->command, MPC52xx_PSC_TX_ENABLE);
out_8(&psc->command, MPC52xx_PSC_RX_ENABLE);
......@@ -333,8 +634,7 @@ mpc52xx_uart_set_termios(struct uart_port *port, struct ktermios *new,
* boot for the console, all stuff is not yet ready to receive at that
* time and that just makes the kernel oops */
/* while (j-- && mpc52xx_uart_int_rx_chars(port)); */
while (!(in_be16(&psc->mpc52xx_psc_status) & MPC52xx_PSC_SR_TXEMP) &&
--j)
while (!mpc52xx_uart_tx_empty(port) && --j)
udelay(1);
if (!j)
......@@ -462,11 +762,9 @@ mpc52xx_uart_int_rx_chars(struct uart_port *port)
unsigned short status;
/* While we can read, do so ! */
while ((status = in_be16(&PSC(port)->mpc52xx_psc_status)) &
MPC52xx_PSC_SR_RXRDY) {
while (psc_ops->raw_rx_rdy(port)) {
/* Get the char */
ch = in_8(&PSC(port)->mpc52xx_psc_buffer_8);
ch = psc_ops->read_char(port);
/* Handle sysreq char */
#ifdef SUPPORT_SYSRQ
......@@ -481,6 +779,8 @@ mpc52xx_uart_int_rx_chars(struct uart_port *port)
flag = TTY_NORMAL;
port->icount.rx++;
status = in_be16(&PSC(port)->mpc52xx_psc_status);
if (status & (MPC52xx_PSC_SR_PE |
MPC52xx_PSC_SR_FE |
MPC52xx_PSC_SR_RB)) {
......@@ -510,7 +810,7 @@ mpc52xx_uart_int_rx_chars(struct uart_port *port)
tty_flip_buffer_push(tty);
return in_be16(&PSC(port)->mpc52xx_psc_status) & MPC52xx_PSC_SR_RXRDY;
return psc_ops->raw_rx_rdy(port);
}
static inline int
......@@ -520,7 +820,7 @@ mpc52xx_uart_int_tx_chars(struct uart_port *port)
/* Process out of band chars */
if (port->x_char) {
out_8(&PSC(port)->mpc52xx_psc_buffer_8, port->x_char);
psc_ops->write_char(port, port->x_char);
port->icount.tx++;
port->x_char = 0;
return 1;
......@@ -533,8 +833,8 @@ mpc52xx_uart_int_tx_chars(struct uart_port *port)
}
/* Send chars */
while (in_be16(&PSC(port)->mpc52xx_psc_status) & MPC52xx_PSC_SR_TXRDY) {
out_8(&PSC(port)->mpc52xx_psc_buffer_8, xmit->buf[xmit->tail]);
while (psc_ops->raw_tx_rdy(port)) {
psc_ops->write_char(port, xmit->buf[xmit->tail]);
xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
port->icount.tx++;
if (uart_circ_empty(xmit))
......@@ -560,7 +860,6 @@ mpc52xx_uart_int(int irq, void *dev_id)
struct uart_port *port = dev_id;
unsigned long pass = ISR_PASS_LIMIT;
unsigned int keepgoing;
unsigned short status;
spin_lock(&port->lock);
......@@ -569,18 +868,12 @@ mpc52xx_uart_int(int irq, void *dev_id)
/* If we don't find anything to do, we stop */
keepgoing = 0;
/* Read status */
status = in_be16(&PSC(port)->mpc52xx_psc_isr);
status &= port->read_status_mask;
/* Do we need to receive chars ? */
/* For this RX interrupts must be on and some chars waiting */
if (status & MPC52xx_PSC_IMR_RXRDY)
psc_ops->rx_clr_irq(port);
if (psc_ops->rx_rdy(port))
keepgoing |= mpc52xx_uart_int_rx_chars(port);
/* Do we need to send chars ? */
/* For this, TX must be ready and TX interrupt enabled */
if (status & MPC52xx_PSC_IMR_TXRDY)
psc_ops->tx_clr_irq(port);
if (psc_ops->tx_rdy(port))
keepgoing |= mpc52xx_uart_int_tx_chars(port);
/* Limit number of iteration */
......@@ -647,36 +940,33 @@ static void
mpc52xx_console_write(struct console *co, const char *s, unsigned int count)
{
struct uart_port *port = &mpc52xx_uart_ports[co->index];
struct mpc52xx_psc __iomem *psc = PSC(port);
unsigned int i, j;
/* Disable interrupts */
out_be16(&psc->mpc52xx_psc_imr, 0);
psc_ops->cw_disable_ints(port);
/* Wait the TX buffer to be empty */
j = 5000000; /* Maximum wait */
while (!(in_be16(&psc->mpc52xx_psc_status) & MPC52xx_PSC_SR_TXEMP) &&
--j)
while (!mpc52xx_uart_tx_empty(port) && --j)
udelay(1);
/* Write all the chars */
for (i = 0; i < count; i++, s++) {
/* Line return handling */
if (*s == '\n')
out_8(&psc->mpc52xx_psc_buffer_8, '\r');
psc_ops->write_char(port, '\r');
/* Send the char */
out_8(&psc->mpc52xx_psc_buffer_8, *s);
psc_ops->write_char(port, *s);
/* Wait the TX buffer to be empty */
j = 20000; /* Maximum wait */
while (!(in_be16(&psc->mpc52xx_psc_status) &
MPC52xx_PSC_SR_TXEMP) && --j)
while (!mpc52xx_uart_tx_empty(port) && --j)
udelay(1);
}
/* Restore interrupt state */
out_be16(&psc->mpc52xx_psc_imr, port->read_status_mask);
psc_ops->cw_restore_ints(port);
}
#if !defined(CONFIG_PPC_MERGE)
......@@ -721,7 +1011,7 @@ mpc52xx_console_setup(struct console *co, char *options)
{
struct uart_port *port = &mpc52xx_uart_ports[co->index];
struct device_node *np = mpc52xx_uart_nodes[co->index];
unsigned int ipb_freq;
unsigned int uartclk;
struct resource res;
int ret;
......@@ -753,17 +1043,16 @@ mpc52xx_console_setup(struct console *co, char *options)
return ret;
}
/* Search for bus-frequency property in this node or a parent */
ipb_freq = mpc52xx_find_ipb_freq(np);
if (ipb_freq == 0) {
pr_debug("Could not find IPB bus frequency!\n");
uartclk = psc_ops->getuartclk(np);
if (uartclk == 0) {
pr_debug("Could not find uart clock frequency!\n");
return -EINVAL;
}
/* Basic port init. Needed since we use some uart_??? func before
* real init for early access */
spin_lock_init(&port->lock);
port->uartclk = ipb_freq / 2;
port->uartclk = uartclk;
port->ops = &mpc52xx_uart_ops;
port->mapbase = res.start;
port->membase = ioremap(res.start, sizeof(struct mpc52xx_psc));
......@@ -949,7 +1238,7 @@ static int __devinit
mpc52xx_uart_of_probe(struct of_device *op, const struct of_device_id *match)
{
int idx = -1;
unsigned int ipb_freq;
unsigned int uartclk;
struct uart_port *port = NULL;
struct resource res;
int ret;
......@@ -965,10 +1254,9 @@ mpc52xx_uart_of_probe(struct of_device *op, const struct of_device_id *match)
pr_debug("Found %s assigned to ttyPSC%x\n",
mpc52xx_uart_nodes[idx]->full_name, idx);
/* Search for bus-frequency property in this node or a parent */
ipb_freq = mpc52xx_find_ipb_freq(op->node);
if (ipb_freq == 0) {
dev_dbg(&op->dev, "Could not find IPB bus frequency!\n");
uartclk = psc_ops->getuartclk(op->node);
if (uartclk == 0) {
dev_dbg(&op->dev, "Could not find uart clock frequency!\n");
return -EINVAL;
}
......@@ -976,7 +1264,7 @@ mpc52xx_uart_of_probe(struct of_device *op, const struct of_device_id *match)
port = &mpc52xx_uart_ports[idx];
spin_lock_init(&port->lock);
port->uartclk = ipb_freq / 2;
port->uartclk = uartclk;
port->fifosize = 512;
port->iotype = UPIO_MEM;
port->flags = UPF_BOOT_AUTOCONF |
......@@ -1080,15 +1368,19 @@ mpc52xx_uart_of_enumerate(void)
static int enum_done;
struct device_node *np;
const unsigned int *devno;
const struct of_device_id *match;
int i;
if (enum_done)
return;
for_each_node_by_type(np, "serial") {
if (!of_match_node(mpc52xx_uart_of_match, np))
match = of_match_node(mpc52xx_uart_of_match, np);
if (!match)
continue;
psc_ops = match->data;
/* Is a particular device number requested? */
devno = of_get_property(np, "port-number", NULL);
mpc52xx_uart_of_assign(np, devno ? *devno : -1);
......@@ -1149,6 +1441,7 @@ mpc52xx_uart_init(void)
return ret;
}
#else
psc_ops = &mpc52xx_psc_ops;
ret = platform_driver_register(&mpc52xx_uart_platform_driver);
if (ret) {
printk(KERN_ERR "%s: platform_driver_register failed (%i)\n",
......
include/asm-powerpc/mpc512x.h 0 → 100644
View file @ 1f7d4f83
/*
* Copyright (C) 2007 Freescale Semiconductor, Inc. All rights reserved.
*
* Author: John Rigby, <jrigby@freescale.com>, Friday Apr 13 2007
*
* Description:
* MPC5121 Prototypes and definitions
*
* This 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.
*
*/
#ifndef __ASM_POWERPC_MPC512x_H__
#define __ASM_POWERPC_MPC512x_H__
extern unsigned long mpc512x_find_ips_freq(struct device_node *node);
#endif /* __ASM_POWERPC_MPC512x_H__ */
include/asm-powerpc/mpc52xx_psc.h
View file @ 1f7d4f83
......@@ -190,5 +190,53 @@ struct mpc52xx_psc_fifo {
u16 tflwfptr; /* PSC + 0x9e */
};
#define MPC512x_PSC_FIFO_RESET_SLICE 0x80
#define MPC512x_PSC_FIFO_ENABLE_SLICE 0x01
#define MPC512x_PSC_FIFO_ENABLE_DMA 0x04
#define MPC512x_PSC_FIFO_EMPTY 0x1
#define MPC512x_PSC_FIFO_FULL 0x2
#define MPC512x_PSC_FIFO_ALARM 0x4
#define MPC512x_PSC_FIFO_URERR 0x8
#define MPC512x_PSC_FIFO_ORERR 0x01
#define MPC512x_PSC_FIFO_MEMERROR 0x02
struct mpc512x_psc_fifo {
u32 reserved1[10];
u32 txcmd; /* PSC + 0x80 */
u32 txalarm; /* PSC + 0x84 */
u32 txsr; /* PSC + 0x88 */
u32 txisr; /* PSC + 0x8c */
u32 tximr; /* PSC + 0x90 */
u32 txcnt; /* PSC + 0x94 */
u32 txptr; /* PSC + 0x98 */
u32 txsz; /* PSC + 0x9c */
u32 reserved2[7];
union {
u8 txdata_8;
u16 txdata_16;
u32 txdata_32;
} txdata; /* PSC + 0xbc */
#define txdata_8 txdata.txdata_8
#define txdata_16 txdata.txdata_16
#define txdata_32 txdata.txdata_32
u32 rxcmd; /* PSC + 0xc0 */
u32 rxalarm; /* PSC + 0xc4 */
u32 rxsr; /* PSC + 0xc8 */
u32 rxisr; /* PSC + 0xcc */
u32 rximr; /* PSC + 0xd0 */
u32 rxcnt; /* PSC + 0xd4 */
u32 rxptr; /* PSC + 0xd8 */
u32 rxsz; /* PSC + 0xdc */
u32 reserved3[7];
union {
u8 rxdata_8;
u16 rxdata_16;
u32 rxdata_32;
} rxdata; /* PSC + 0xfc */
#define rxdata_8 rxdata.rxdata_8
#define rxdata_16 rxdata.rxdata_16
#define rxdata_32 rxdata.rxdata_32
};
#endif /* __ASM_MPC52xx_PSC_H__ */
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