* [Add mpc5121 support PATCH v4 0/4] Basic Freescale MPC512x support
@ 2008-01-28 17:28 John Rigby
2008-01-28 17:28 ` [Add mpc5121 support PATCH v4 1/4] " John Rigby
0 siblings, 1 reply; 5+ messages in thread
From: John Rigby @ 2008-01-28 17:28 UTC (permalink / raw)
To: linuxppc-dev
New patches set hopefully for 2.6.25
Changes since v3
First four patches have already gone in via Grant and Kumar
1/4 Basic-Freescale-MPC512x-support.patch
Previously Acked-by: Grant Likely <grant.likely@secretlab.ca>
2/4 Device-tree-for-MPC5121-ADS.patch
Updated to /dts-v1/
3/4 Factor out 5200 dependencies from 52xx psc driver
Fixed problem on no output in userland
4/4 Add MPC512x support to MPC52xx psc driver
No changes since v3
^ permalink raw reply [flat|nested] 5+ messages in thread* [Add mpc5121 support PATCH v4 1/4] Basic Freescale MPC512x support 2008-01-28 17:28 [Add mpc5121 support PATCH v4 0/4] Basic Freescale MPC512x support John Rigby @ 2008-01-28 17:28 ` John Rigby 2008-01-28 17:28 ` [Add mpc5121 support PATCH v4 2/4] Device tree for MPC5121 ADS John Rigby 0 siblings, 1 reply; 5+ messages in thread From: John Rigby @ 2008-01-28 17:28 UTC (permalink / raw) To: linuxppc-dev; +Cc: John Rigby 512x is very similar to 83xx and most of this is patterned after code from 83xx. New platform: changed: arch/powerpc/Kconfig arch/powerpc/platforms/Kconfig arch/powerpc/platforms/Kconfig.cputype arch/powerpc/platforms/Makefile new: arch/powerpc/platforms/512x/* include/asm-powerpc/mpc512x.h Signed-off-by: John Rigby <jrigby@freescale.com> Acked-by: Grant Likely <grant.likely@secretlab.ca> Conflicts: arch/powerpc/Kconfig --- arch/powerpc/Kconfig | 2 +- arch/powerpc/platforms/512x/Kconfig | 20 ++++++ arch/powerpc/platforms/512x/Makefile | 4 + arch/powerpc/platforms/512x/mpc5121_ads.c | 104 +++++++++++++++++++++++++++++ arch/powerpc/platforms/Kconfig | 1 + arch/powerpc/platforms/Kconfig.cputype | 6 +- arch/powerpc/platforms/Makefile | 1 + include/asm-powerpc/mpc512x.h | 22 ++++++ 8 files changed, 156 insertions(+), 4 deletions(-) create mode 100644 arch/powerpc/platforms/512x/Kconfig create mode 100644 arch/powerpc/platforms/512x/Makefile create mode 100644 arch/powerpc/platforms/512x/mpc5121_ads.c create mode 100644 include/asm-powerpc/mpc512x.h diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index 5e10838..12c5cde 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -481,7 +481,7 @@ 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 diff --git a/arch/powerpc/platforms/512x/Kconfig b/arch/powerpc/platforms/512x/Kconfig new file mode 100644 index 0000000..c6fa49e --- /dev/null +++ b/arch/powerpc/platforms/512x/Kconfig @@ -0,0 +1,20 @@ +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 diff --git a/arch/powerpc/platforms/512x/Makefile b/arch/powerpc/platforms/512x/Makefile new file mode 100644 index 0000000..232c89f --- /dev/null +++ b/arch/powerpc/platforms/512x/Makefile @@ -0,0 +1,4 @@ +# +# Makefile for the Freescale PowerPC 512x linux kernel. +# +obj-$(CONFIG_MPC5121_ADS) += mpc5121_ads.o diff --git a/arch/powerpc/platforms/512x/mpc5121_ads.c b/arch/powerpc/platforms/512x/mpc5121_ads.c new file mode 100644 index 0000000..50bd3a3 --- /dev/null +++ b/arch/powerpc/platforms/512x/mpc5121_ads.c @@ -0,0 +1,104 @@ +/* + * 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, +}; diff --git a/arch/powerpc/platforms/Kconfig b/arch/powerpc/platforms/Kconfig index 4286664..d0606a9 100644 --- a/arch/powerpc/platforms/Kconfig +++ b/arch/powerpc/platforms/Kconfig @@ -41,6 +41,7 @@ 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" diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype index c3ee0b5..fb86300 100644 --- a/arch/powerpc/platforms/Kconfig.cputype +++ b/arch/powerpc/platforms/Kconfig.cputype @@ -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 @@ -229,7 +229,7 @@ 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 diff --git a/arch/powerpc/platforms/Makefile b/arch/powerpc/platforms/Makefile index 6d9079d..a984894 100644 --- a/arch/powerpc/platforms/Makefile +++ b/arch/powerpc/platforms/Makefile @@ -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/ diff --git a/include/asm-powerpc/mpc512x.h b/include/asm-powerpc/mpc512x.h new file mode 100644 index 0000000..c48a165 --- /dev/null +++ b/include/asm-powerpc/mpc512x.h @@ -0,0 +1,22 @@ +/* + * 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__ */ + -- 1.5.3.8 ^ permalink raw reply related [flat|nested] 5+ messages in thread
* [Add mpc5121 support PATCH v4 2/4] Device tree for MPC5121 ADS 2008-01-28 17:28 ` [Add mpc5121 support PATCH v4 1/4] " John Rigby @ 2008-01-28 17:28 ` John Rigby 2008-01-28 17:28 ` [Add mpc5121 support PATCH v4 3/4] Factor out 5200 dependencies from 52xx psc driver John Rigby 0 siblings, 1 reply; 5+ messages in thread From: John Rigby @ 2008-01-28 17:28 UTC (permalink / raw) To: linuxppc-dev; +Cc: John Rigby Minimal /dts-v1/ device tree for mpc5121 ads. port-number property in uart nodes will go away after the driver learns to use aliases Signed-off-by: John Rigby <jrigby@freescale.com> --- arch/powerpc/boot/dts/mpc5121ads.dts | 122 ++++++++++++++++++++++++++++++++++ 1 files changed, 122 insertions(+), 0 deletions(-) create mode 100644 arch/powerpc/boot/dts/mpc5121ads.dts diff --git a/arch/powerpc/boot/dts/mpc5121ads.dts b/arch/powerpc/boot/dts/mpc5121ads.dts new file mode 100644 index 0000000..94ad7b2 --- /dev/null +++ b/arch/powerpc/boot/dts/mpc5121ads.dts @@ -0,0 +1,122 @@ +/* + * 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 >; + }; + }; +}; -- 1.5.3.8 ^ permalink raw reply related [flat|nested] 5+ messages in thread
* [Add mpc5121 support PATCH v4 3/4] Factor out 5200 dependencies from 52xx psc driver 2008-01-28 17:28 ` [Add mpc5121 support PATCH v4 2/4] Device tree for MPC5121 ADS John Rigby @ 2008-01-28 17:28 ` John Rigby 2008-01-28 17:28 ` [Add mpc5121 support PATCH v4 4/4] Add MPC512x support to MPC52xx " John Rigby 0 siblings, 1 reply; 5+ messages in thread From: John Rigby @ 2008-01-28 17:28 UTC (permalink / raw) To: linuxppc-dev; +Cc: John Rigby PSCs change from 5200 to 5121 this patch localizes the differences in preparation for adding 5121 support Signed-off-by: John Rigby <jrigby@freescale.com> --- drivers/serial/mpc52xx_uart.c | 256 ++++++++++++++++++++++++++++++---------- 1 files changed, 192 insertions(+), 64 deletions(-) diff --git a/drivers/serial/mpc52xx_uart.c b/drivers/serial/mpc52xx_uart.c index 1e3721a..5bd1171 100644 --- a/drivers/serial/mpc52xx_uart.c +++ b/drivers/serial/mpc52xx_uart.c @@ -67,7 +67,6 @@ #include <linux/serial.h> #include <linux/sysrq.h> #include <linux/console.h> - #include <linux/delay.h> #include <linux/io.h> @@ -111,8 +110,8 @@ 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 */ @@ -135,6 +134,162 @@ static struct of_device_id mpc52xx_uart_of_match[] = { }; #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); +}; + +#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, +}; + +static struct psc_ops *psc_ops = &mpc52xx_psc_ops; /* ======================================================================== */ /* UART operations */ @@ -143,8 +298,7 @@ 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 @@ -164,16 +318,14 @@ 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 @@ -186,8 +338,7 @@ 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); @@ -197,8 +348,7 @@ 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 @@ -225,7 +375,6 @@ 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 */ @@ -240,15 +389,7 @@ 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); @@ -331,8 +472,7 @@ 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) @@ -460,11 +600,9 @@ 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 @@ -479,6 +617,8 @@ 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)) { @@ -508,7 +648,7 @@ 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 @@ -518,7 +658,7 @@ 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; @@ -531,8 +671,8 @@ 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)) @@ -558,7 +698,6 @@ 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); @@ -567,18 +706,12 @@ 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 */ @@ -645,36 +778,33 @@ 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) @@ -719,7 +849,7 @@ 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; @@ -751,17 +881,16 @@ 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)); @@ -947,7 +1076,7 @@ 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; @@ -963,10 +1092,9 @@ 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; } @@ -974,7 +1102,7 @@ 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 | -- 1.5.3.8 ^ permalink raw reply related [flat|nested] 5+ messages in thread
* [Add mpc5121 support PATCH v4 4/4] Add MPC512x support to MPC52xx psc driver 2008-01-28 17:28 ` [Add mpc5121 support PATCH v4 3/4] Factor out 5200 dependencies from 52xx psc driver John Rigby @ 2008-01-28 17:28 ` John Rigby 0 siblings, 0 replies; 5+ messages in thread From: John Rigby @ 2008-01-28 17:28 UTC (permalink / raw) To: linuxppc-dev; +Cc: John Rigby Add 512x support using the psc_ops framework established with the previous patch. All 512x PSCs share the same interrupt so add IRQF_SHARED to irq flags. Signed-off-by: John Rigby <jrigby@freescale.com> --- drivers/serial/Kconfig | 12 ++-- drivers/serial/mpc52xx_uart.c | 177 +++++++++++++++++++++++++++++++++++-- include/asm-powerpc/mpc52xx_psc.h | 48 ++++++++++ 3 files changed, 222 insertions(+), 15 deletions(-) diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig index d962b74..d9d7673 100644 --- a/drivers/serial/Kconfig +++ b/drivers/serial/Kconfig @@ -1114,17 +1114,17 @@ 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 @@ -1132,7 +1132,7 @@ 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 diff --git a/drivers/serial/mpc52xx_uart.c b/drivers/serial/mpc52xx_uart.c index 5bd1171..75654f8 100644 --- a/drivers/serial/mpc52xx_uart.c +++ b/drivers/serial/mpc52xx_uart.c @@ -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> @@ -78,6 +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) @@ -127,12 +131,6 @@ static irqreturn_t mpc52xx_uart_int(int irq, void *dev_id); #define uart_console(port) (0) #endif -#if defined(CONFIG_PPC_MERGE) -static struct of_device_id mpc52xx_uart_of_match[] = { - { .type = "serial", .compatible = "mpc5200-psc-uart", }, - {}, -}; -#endif /* ======================================================================== */ /* PSC fifo operations for isolating differences between 52xx and 512x */ @@ -157,6 +155,7 @@ struct psc_ops { 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) { @@ -289,7 +288,161 @@ static struct psc_ops mpc52xx_psc_ops = { .getuartclk = mpc52xx_getuartclk, }; -static struct psc_ops *psc_ops = &mpc52xx_psc_ops; +#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; + +#if defined(CONFIG_PPC_MERGE) +static const struct of_device_id mpc52xx_uart_of_match[] = { +#ifdef CONFIG_PPC_MPC52xx + {.type = "serial", + .compatible = "mpc5200-psc-uart", + .data = &mpc52xx_psc_ops}, +#endif +#ifdef CONFIG_PPC_MPC512x + {.type = "serial", + .compatible = "fsl,mpc5121-psc-uart", + .data = &mpc512x_psc_ops}, +#endif + {}, +}; +#endif /* ======================================================================== */ /* UART operations */ @@ -379,7 +532,8 @@ mpc52xx_uart_startup(struct uart_port *port) /* 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; @@ -1206,15 +1360,19 @@ 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); @@ -1275,6 +1433,7 @@ 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", diff --git a/include/asm-powerpc/mpc52xx_psc.h b/include/asm-powerpc/mpc52xx_psc.h index bea42b9..710c5d3 100644 --- a/include/asm-powerpc/mpc52xx_psc.h +++ b/include/asm-powerpc/mpc52xx_psc.h @@ -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__ */ -- 1.5.3.8 ^ permalink raw reply related [flat|nested] 5+ messages in thread
end of thread, other threads:[~2008-01-28 17:30 UTC | newest] Thread overview: 5+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2008-01-28 17:28 [Add mpc5121 support PATCH v4 0/4] Basic Freescale MPC512x support John Rigby 2008-01-28 17:28 ` [Add mpc5121 support PATCH v4 1/4] " John Rigby 2008-01-28 17:28 ` [Add mpc5121 support PATCH v4 2/4] Device tree for MPC5121 ADS John Rigby 2008-01-28 17:28 ` [Add mpc5121 support PATCH v4 3/4] Factor out 5200 dependencies from 52xx psc driver John Rigby 2008-01-28 17:28 ` [Add mpc5121 support PATCH v4 4/4] Add MPC512x support to MPC52xx " John Rigby
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