2005-04-17 00:20:36 +02:00
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/*
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* linux/drivers/serial/cpm_uart_cpm2.c
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*
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* Driver for CPM (SCC/SMC) serial ports; CPM2 definitions
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*
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2005-11-14 01:06:30 +01:00
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* Maintainer: Kumar Gala (galak@kernel.crashing.org) (CPM2)
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2005-04-17 00:20:36 +02:00
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* Pantelis Antoniou (panto@intracom.gr) (CPM1)
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*
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* Copyright (C) 2004 Freescale Semiconductor, Inc.
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* (C) 2004 Intracom, S.A.
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2006-04-29 21:06:00 +02:00
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* (C) 2006 MontaVista Software, Inc.
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* Vitaly Bordug <vbordug@ru.mvista.com>
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2005-04-17 00:20:36 +02:00
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include <linux/module.h>
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#include <linux/tty.h>
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#include <linux/ioport.h>
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#include <linux/init.h>
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#include <linux/serial.h>
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#include <linux/console.h>
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#include <linux/sysrq.h>
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#include <linux/device.h>
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#include <linux/bootmem.h>
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#include <linux/dma-mapping.h>
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#include <asm/io.h>
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#include <asm/irq.h>
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2006-09-21 15:27:15 +02:00
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#include <asm/fs_pd.h>
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2008-04-10 17:01:27 +02:00
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#ifdef CONFIG_PPC_CPM_NEW_BINDING
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#include <asm/prom.h>
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#endif
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2005-04-17 00:20:36 +02:00
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#include <linux/serial_core.h>
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#include <linux/kernel.h>
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#include "cpm_uart.h"
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/**************************************************************/
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2007-07-18 00:59:06 +02:00
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#ifdef CONFIG_PPC_CPM_NEW_BINDING
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void cpm_line_cr_cmd(struct uart_cpm_port *port, int cmd)
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{
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2007-11-26 18:03:40 +01:00
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cpm_command(port->command, cmd);
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2007-07-18 00:59:06 +02:00
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}
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2008-04-10 17:01:27 +02:00
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void __iomem *cpm_uart_map_pram(struct uart_cpm_port *port,
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struct device_node *np)
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{
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void __iomem *pram;
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unsigned long offset;
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struct resource res;
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unsigned long len;
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/* Don't remap parameter RAM if it has already been initialized
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* during console setup.
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*/
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if (IS_SMC(port) && port->smcup)
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return port->smcup;
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else if (!IS_SMC(port) && port->sccup)
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return port->sccup;
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if (of_address_to_resource(np, 1, &res))
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return NULL;
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len = 1 + res.end - res.start;
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pram = ioremap(res.start, len);
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if (!pram)
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return NULL;
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if (!IS_SMC(port))
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return pram;
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if (len != 2) {
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printk(KERN_WARNING "cpm_uart[%d]: device tree references "
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"SMC pram, using boot loader/wrapper pram mapping. "
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"Please fix your device tree to reference the pram "
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"base register instead.\n",
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port->port.line);
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return pram;
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}
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offset = cpm_dpalloc(PROFF_SMC_SIZE, 64);
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out_be16(pram, offset);
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iounmap(pram);
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return cpm_muram_addr(offset);
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}
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void cpm_uart_unmap_pram(struct uart_cpm_port *port, void __iomem *pram)
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{
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if (!IS_SMC(port))
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iounmap(pram);
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}
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2007-07-18 00:59:06 +02:00
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#else
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void cpm_line_cr_cmd(struct uart_cpm_port *port, int cmd)
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2005-04-17 00:20:36 +02:00
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{
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ulong val;
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2007-07-18 00:59:06 +02:00
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int line = port - cpm_uart_ports;
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POWERPC: Get rid of remapping the whole immr
The stuff below cleans up the code attempting to remap the whole cpm2_immr
early, as well as places happily assuming that fact. This is more like the 2.4
legacy stuff, and is at least confusing and unclear now.
To keep the world comfortable, a new mechanism is introduced: before accessing
specific immr register/register set, one needs to map it, using cpm2_map(<reg>),
for instance, access to CPM command register will look like
volatile cpm_cpm2_t *cp = cpm2_map(im_cpm);
keeping the code clear, yet without "already defined somewhere" cpm2_immr.
So far, unmapping code is not implemented, but it's not a big deal to add it,
if the whole idea makes sense.
Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com>
2006-09-21 20:37:58 +02:00
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volatile cpm_cpm2_t *cp = cpm2_map(im_cpm);
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2005-04-17 00:20:36 +02:00
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switch (line) {
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case UART_SMC1:
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val = mk_cr_cmd(CPM_CR_SMC1_PAGE, CPM_CR_SMC1_SBLOCK, 0,
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cmd) | CPM_CR_FLG;
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break;
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case UART_SMC2:
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val = mk_cr_cmd(CPM_CR_SMC2_PAGE, CPM_CR_SMC2_SBLOCK, 0,
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cmd) | CPM_CR_FLG;
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break;
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case UART_SCC1:
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val = mk_cr_cmd(CPM_CR_SCC1_PAGE, CPM_CR_SCC1_SBLOCK, 0,
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cmd) | CPM_CR_FLG;
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break;
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case UART_SCC2:
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val = mk_cr_cmd(CPM_CR_SCC2_PAGE, CPM_CR_SCC2_SBLOCK, 0,
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cmd) | CPM_CR_FLG;
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break;
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case UART_SCC3:
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val = mk_cr_cmd(CPM_CR_SCC3_PAGE, CPM_CR_SCC3_SBLOCK, 0,
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cmd) | CPM_CR_FLG;
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break;
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case UART_SCC4:
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val = mk_cr_cmd(CPM_CR_SCC4_PAGE, CPM_CR_SCC4_SBLOCK, 0,
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cmd) | CPM_CR_FLG;
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break;
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default:
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return;
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}
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cp->cp_cpcr = val;
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while (cp->cp_cpcr & CPM_CR_FLG) ;
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POWERPC: Get rid of remapping the whole immr
The stuff below cleans up the code attempting to remap the whole cpm2_immr
early, as well as places happily assuming that fact. This is more like the 2.4
legacy stuff, and is at least confusing and unclear now.
To keep the world comfortable, a new mechanism is introduced: before accessing
specific immr register/register set, one needs to map it, using cpm2_map(<reg>),
for instance, access to CPM command register will look like
volatile cpm_cpm2_t *cp = cpm2_map(im_cpm);
keeping the code clear, yet without "already defined somewhere" cpm2_immr.
So far, unmapping code is not implemented, but it's not a big deal to add it,
if the whole idea makes sense.
Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com>
2006-09-21 20:37:58 +02:00
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cpm2_unmap(cp);
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2005-04-17 00:20:36 +02:00
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}
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void smc1_lineif(struct uart_cpm_port *pinfo)
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{
|
POWERPC: Get rid of remapping the whole immr
The stuff below cleans up the code attempting to remap the whole cpm2_immr
early, as well as places happily assuming that fact. This is more like the 2.4
legacy stuff, and is at least confusing and unclear now.
To keep the world comfortable, a new mechanism is introduced: before accessing
specific immr register/register set, one needs to map it, using cpm2_map(<reg>),
for instance, access to CPM command register will look like
volatile cpm_cpm2_t *cp = cpm2_map(im_cpm);
keeping the code clear, yet without "already defined somewhere" cpm2_immr.
So far, unmapping code is not implemented, but it's not a big deal to add it,
if the whole idea makes sense.
Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com>
2006-09-21 20:37:58 +02:00
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volatile iop_cpm2_t *io = cpm2_map(im_ioport);
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volatile cpmux_t *cpmux = cpm2_map(im_cpmux);
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2005-04-17 00:20:36 +02:00
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/* SMC1 is only on port D */
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io->iop_ppard |= 0x00c00000;
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io->iop_pdird |= 0x00400000;
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io->iop_pdird &= ~0x00800000;
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io->iop_psord &= ~0x00c00000;
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/* Wire BRG1 to SMC1 */
|
POWERPC: Get rid of remapping the whole immr
The stuff below cleans up the code attempting to remap the whole cpm2_immr
early, as well as places happily assuming that fact. This is more like the 2.4
legacy stuff, and is at least confusing and unclear now.
To keep the world comfortable, a new mechanism is introduced: before accessing
specific immr register/register set, one needs to map it, using cpm2_map(<reg>),
for instance, access to CPM command register will look like
volatile cpm_cpm2_t *cp = cpm2_map(im_cpm);
keeping the code clear, yet without "already defined somewhere" cpm2_immr.
So far, unmapping code is not implemented, but it's not a big deal to add it,
if the whole idea makes sense.
Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com>
2006-09-21 20:37:58 +02:00
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cpmux->cmx_smr &= 0x0f;
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2005-04-17 00:20:36 +02:00
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pinfo->brg = 1;
|
POWERPC: Get rid of remapping the whole immr
The stuff below cleans up the code attempting to remap the whole cpm2_immr
early, as well as places happily assuming that fact. This is more like the 2.4
legacy stuff, and is at least confusing and unclear now.
To keep the world comfortable, a new mechanism is introduced: before accessing
specific immr register/register set, one needs to map it, using cpm2_map(<reg>),
for instance, access to CPM command register will look like
volatile cpm_cpm2_t *cp = cpm2_map(im_cpm);
keeping the code clear, yet without "already defined somewhere" cpm2_immr.
So far, unmapping code is not implemented, but it's not a big deal to add it,
if the whole idea makes sense.
Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com>
2006-09-21 20:37:58 +02:00
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cpm2_unmap(cpmux);
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cpm2_unmap(io);
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2005-04-17 00:20:36 +02:00
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}
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void smc2_lineif(struct uart_cpm_port *pinfo)
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{
|
POWERPC: Get rid of remapping the whole immr
The stuff below cleans up the code attempting to remap the whole cpm2_immr
early, as well as places happily assuming that fact. This is more like the 2.4
legacy stuff, and is at least confusing and unclear now.
To keep the world comfortable, a new mechanism is introduced: before accessing
specific immr register/register set, one needs to map it, using cpm2_map(<reg>),
for instance, access to CPM command register will look like
volatile cpm_cpm2_t *cp = cpm2_map(im_cpm);
keeping the code clear, yet without "already defined somewhere" cpm2_immr.
So far, unmapping code is not implemented, but it's not a big deal to add it,
if the whole idea makes sense.
Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com>
2006-09-21 20:37:58 +02:00
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volatile iop_cpm2_t *io = cpm2_map(im_ioport);
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volatile cpmux_t *cpmux = cpm2_map(im_cpmux);
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2005-04-17 00:20:36 +02:00
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/* SMC2 is only on port A */
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io->iop_ppara |= 0x00c00000;
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io->iop_pdira |= 0x00400000;
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io->iop_pdira &= ~0x00800000;
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io->iop_psora &= ~0x00c00000;
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/* Wire BRG2 to SMC2 */
|
POWERPC: Get rid of remapping the whole immr
The stuff below cleans up the code attempting to remap the whole cpm2_immr
early, as well as places happily assuming that fact. This is more like the 2.4
legacy stuff, and is at least confusing and unclear now.
To keep the world comfortable, a new mechanism is introduced: before accessing
specific immr register/register set, one needs to map it, using cpm2_map(<reg>),
for instance, access to CPM command register will look like
volatile cpm_cpm2_t *cp = cpm2_map(im_cpm);
keeping the code clear, yet without "already defined somewhere" cpm2_immr.
So far, unmapping code is not implemented, but it's not a big deal to add it,
if the whole idea makes sense.
Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com>
2006-09-21 20:37:58 +02:00
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cpmux->cmx_smr &= 0xf0;
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2005-04-17 00:20:36 +02:00
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pinfo->brg = 2;
|
POWERPC: Get rid of remapping the whole immr
The stuff below cleans up the code attempting to remap the whole cpm2_immr
early, as well as places happily assuming that fact. This is more like the 2.4
legacy stuff, and is at least confusing and unclear now.
To keep the world comfortable, a new mechanism is introduced: before accessing
specific immr register/register set, one needs to map it, using cpm2_map(<reg>),
for instance, access to CPM command register will look like
volatile cpm_cpm2_t *cp = cpm2_map(im_cpm);
keeping the code clear, yet without "already defined somewhere" cpm2_immr.
So far, unmapping code is not implemented, but it's not a big deal to add it,
if the whole idea makes sense.
Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com>
2006-09-21 20:37:58 +02:00
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cpm2_unmap(cpmux);
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cpm2_unmap(io);
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2005-04-17 00:20:36 +02:00
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}
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void scc1_lineif(struct uart_cpm_port *pinfo)
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{
|
POWERPC: Get rid of remapping the whole immr
The stuff below cleans up the code attempting to remap the whole cpm2_immr
early, as well as places happily assuming that fact. This is more like the 2.4
legacy stuff, and is at least confusing and unclear now.
To keep the world comfortable, a new mechanism is introduced: before accessing
specific immr register/register set, one needs to map it, using cpm2_map(<reg>),
for instance, access to CPM command register will look like
volatile cpm_cpm2_t *cp = cpm2_map(im_cpm);
keeping the code clear, yet without "already defined somewhere" cpm2_immr.
So far, unmapping code is not implemented, but it's not a big deal to add it,
if the whole idea makes sense.
Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com>
2006-09-21 20:37:58 +02:00
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volatile iop_cpm2_t *io = cpm2_map(im_ioport);
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volatile cpmux_t *cpmux = cpm2_map(im_cpmux);
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2005-04-17 00:20:36 +02:00
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/* Use Port D for SCC1 instead of other functions. */
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io->iop_ppard |= 0x00000003;
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io->iop_psord &= ~0x00000001; /* Rx */
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io->iop_psord |= 0x00000002; /* Tx */
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io->iop_pdird &= ~0x00000001; /* Rx */
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io->iop_pdird |= 0x00000002; /* Tx */
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/* Wire BRG1 to SCC1 */
|
POWERPC: Get rid of remapping the whole immr
The stuff below cleans up the code attempting to remap the whole cpm2_immr
early, as well as places happily assuming that fact. This is more like the 2.4
legacy stuff, and is at least confusing and unclear now.
To keep the world comfortable, a new mechanism is introduced: before accessing
specific immr register/register set, one needs to map it, using cpm2_map(<reg>),
for instance, access to CPM command register will look like
volatile cpm_cpm2_t *cp = cpm2_map(im_cpm);
keeping the code clear, yet without "already defined somewhere" cpm2_immr.
So far, unmapping code is not implemented, but it's not a big deal to add it,
if the whole idea makes sense.
Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com>
2006-09-21 20:37:58 +02:00
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cpmux->cmx_scr &= 0x00ffffff;
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cpmux->cmx_scr |= 0x00000000;
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2005-04-17 00:20:36 +02:00
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pinfo->brg = 1;
|
POWERPC: Get rid of remapping the whole immr
The stuff below cleans up the code attempting to remap the whole cpm2_immr
early, as well as places happily assuming that fact. This is more like the 2.4
legacy stuff, and is at least confusing and unclear now.
To keep the world comfortable, a new mechanism is introduced: before accessing
specific immr register/register set, one needs to map it, using cpm2_map(<reg>),
for instance, access to CPM command register will look like
volatile cpm_cpm2_t *cp = cpm2_map(im_cpm);
keeping the code clear, yet without "already defined somewhere" cpm2_immr.
So far, unmapping code is not implemented, but it's not a big deal to add it,
if the whole idea makes sense.
Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com>
2006-09-21 20:37:58 +02:00
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cpm2_unmap(cpmux);
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cpm2_unmap(io);
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2005-04-17 00:20:36 +02:00
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}
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void scc2_lineif(struct uart_cpm_port *pinfo)
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{
|
2005-06-22 02:15:22 +02:00
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/*
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* STx GP3 uses the SCC2 secondary option pin assignment
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* which this driver doesn't account for in the static
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* pin assignments. This kind of board specific info
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* really has to get out of the driver so boards can
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* be supported in a sane fashion.
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*/
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2008-01-23 13:36:40 +01:00
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|
|
volatile cpmux_t *cpmux = cpm2_map(im_cpmux);
|
2005-06-22 02:15:22 +02:00
|
|
|
#ifndef CONFIG_STX_GP3
|
POWERPC: Get rid of remapping the whole immr
The stuff below cleans up the code attempting to remap the whole cpm2_immr
early, as well as places happily assuming that fact. This is more like the 2.4
legacy stuff, and is at least confusing and unclear now.
To keep the world comfortable, a new mechanism is introduced: before accessing
specific immr register/register set, one needs to map it, using cpm2_map(<reg>),
for instance, access to CPM command register will look like
volatile cpm_cpm2_t *cp = cpm2_map(im_cpm);
keeping the code clear, yet without "already defined somewhere" cpm2_immr.
So far, unmapping code is not implemented, but it's not a big deal to add it,
if the whole idea makes sense.
Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com>
2006-09-21 20:37:58 +02:00
|
|
|
volatile iop_cpm2_t *io = cpm2_map(im_ioport);
|
|
|
|
|
2005-04-17 00:20:36 +02:00
|
|
|
io->iop_pparb |= 0x008b0000;
|
|
|
|
io->iop_pdirb |= 0x00880000;
|
|
|
|
io->iop_psorb |= 0x00880000;
|
|
|
|
io->iop_pdirb &= ~0x00030000;
|
|
|
|
io->iop_psorb &= ~0x00030000;
|
2005-06-22 02:15:22 +02:00
|
|
|
#endif
|
POWERPC: Get rid of remapping the whole immr
The stuff below cleans up the code attempting to remap the whole cpm2_immr
early, as well as places happily assuming that fact. This is more like the 2.4
legacy stuff, and is at least confusing and unclear now.
To keep the world comfortable, a new mechanism is introduced: before accessing
specific immr register/register set, one needs to map it, using cpm2_map(<reg>),
for instance, access to CPM command register will look like
volatile cpm_cpm2_t *cp = cpm2_map(im_cpm);
keeping the code clear, yet without "already defined somewhere" cpm2_immr.
So far, unmapping code is not implemented, but it's not a big deal to add it,
if the whole idea makes sense.
Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com>
2006-09-21 20:37:58 +02:00
|
|
|
cpmux->cmx_scr &= 0xff00ffff;
|
|
|
|
cpmux->cmx_scr |= 0x00090000;
|
2005-04-17 00:20:36 +02:00
|
|
|
pinfo->brg = 2;
|
POWERPC: Get rid of remapping the whole immr
The stuff below cleans up the code attempting to remap the whole cpm2_immr
early, as well as places happily assuming that fact. This is more like the 2.4
legacy stuff, and is at least confusing and unclear now.
To keep the world comfortable, a new mechanism is introduced: before accessing
specific immr register/register set, one needs to map it, using cpm2_map(<reg>),
for instance, access to CPM command register will look like
volatile cpm_cpm2_t *cp = cpm2_map(im_cpm);
keeping the code clear, yet without "already defined somewhere" cpm2_immr.
So far, unmapping code is not implemented, but it's not a big deal to add it,
if the whole idea makes sense.
Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com>
2006-09-21 20:37:58 +02:00
|
|
|
|
|
|
|
cpm2_unmap(cpmux);
|
|
|
|
cpm2_unmap(io);
|
2005-04-17 00:20:36 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
void scc3_lineif(struct uart_cpm_port *pinfo)
|
|
|
|
{
|
POWERPC: Get rid of remapping the whole immr
The stuff below cleans up the code attempting to remap the whole cpm2_immr
early, as well as places happily assuming that fact. This is more like the 2.4
legacy stuff, and is at least confusing and unclear now.
To keep the world comfortable, a new mechanism is introduced: before accessing
specific immr register/register set, one needs to map it, using cpm2_map(<reg>),
for instance, access to CPM command register will look like
volatile cpm_cpm2_t *cp = cpm2_map(im_cpm);
keeping the code clear, yet without "already defined somewhere" cpm2_immr.
So far, unmapping code is not implemented, but it's not a big deal to add it,
if the whole idea makes sense.
Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com>
2006-09-21 20:37:58 +02:00
|
|
|
volatile iop_cpm2_t *io = cpm2_map(im_ioport);
|
|
|
|
volatile cpmux_t *cpmux = cpm2_map(im_cpmux);
|
|
|
|
|
2005-04-17 00:20:36 +02:00
|
|
|
io->iop_pparb |= 0x008b0000;
|
|
|
|
io->iop_pdirb |= 0x00880000;
|
|
|
|
io->iop_psorb |= 0x00880000;
|
|
|
|
io->iop_pdirb &= ~0x00030000;
|
|
|
|
io->iop_psorb &= ~0x00030000;
|
POWERPC: Get rid of remapping the whole immr
The stuff below cleans up the code attempting to remap the whole cpm2_immr
early, as well as places happily assuming that fact. This is more like the 2.4
legacy stuff, and is at least confusing and unclear now.
To keep the world comfortable, a new mechanism is introduced: before accessing
specific immr register/register set, one needs to map it, using cpm2_map(<reg>),
for instance, access to CPM command register will look like
volatile cpm_cpm2_t *cp = cpm2_map(im_cpm);
keeping the code clear, yet without "already defined somewhere" cpm2_immr.
So far, unmapping code is not implemented, but it's not a big deal to add it,
if the whole idea makes sense.
Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com>
2006-09-21 20:37:58 +02:00
|
|
|
cpmux->cmx_scr &= 0xffff00ff;
|
|
|
|
cpmux->cmx_scr |= 0x00001200;
|
2005-04-17 00:20:36 +02:00
|
|
|
pinfo->brg = 3;
|
POWERPC: Get rid of remapping the whole immr
The stuff below cleans up the code attempting to remap the whole cpm2_immr
early, as well as places happily assuming that fact. This is more like the 2.4
legacy stuff, and is at least confusing and unclear now.
To keep the world comfortable, a new mechanism is introduced: before accessing
specific immr register/register set, one needs to map it, using cpm2_map(<reg>),
for instance, access to CPM command register will look like
volatile cpm_cpm2_t *cp = cpm2_map(im_cpm);
keeping the code clear, yet without "already defined somewhere" cpm2_immr.
So far, unmapping code is not implemented, but it's not a big deal to add it,
if the whole idea makes sense.
Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com>
2006-09-21 20:37:58 +02:00
|
|
|
|
|
|
|
cpm2_unmap(cpmux);
|
|
|
|
cpm2_unmap(io);
|
2005-04-17 00:20:36 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
void scc4_lineif(struct uart_cpm_port *pinfo)
|
|
|
|
{
|
POWERPC: Get rid of remapping the whole immr
The stuff below cleans up the code attempting to remap the whole cpm2_immr
early, as well as places happily assuming that fact. This is more like the 2.4
legacy stuff, and is at least confusing and unclear now.
To keep the world comfortable, a new mechanism is introduced: before accessing
specific immr register/register set, one needs to map it, using cpm2_map(<reg>),
for instance, access to CPM command register will look like
volatile cpm_cpm2_t *cp = cpm2_map(im_cpm);
keeping the code clear, yet without "already defined somewhere" cpm2_immr.
So far, unmapping code is not implemented, but it's not a big deal to add it,
if the whole idea makes sense.
Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com>
2006-09-21 20:37:58 +02:00
|
|
|
volatile iop_cpm2_t *io = cpm2_map(im_ioport);
|
|
|
|
volatile cpmux_t *cpmux = cpm2_map(im_cpmux);
|
2005-04-17 00:20:36 +02:00
|
|
|
|
|
|
|
io->iop_ppard |= 0x00000600;
|
|
|
|
io->iop_psord &= ~0x00000600; /* Tx/Rx */
|
|
|
|
io->iop_pdird &= ~0x00000200; /* Rx */
|
|
|
|
io->iop_pdird |= 0x00000400; /* Tx */
|
|
|
|
|
POWERPC: Get rid of remapping the whole immr
The stuff below cleans up the code attempting to remap the whole cpm2_immr
early, as well as places happily assuming that fact. This is more like the 2.4
legacy stuff, and is at least confusing and unclear now.
To keep the world comfortable, a new mechanism is introduced: before accessing
specific immr register/register set, one needs to map it, using cpm2_map(<reg>),
for instance, access to CPM command register will look like
volatile cpm_cpm2_t *cp = cpm2_map(im_cpm);
keeping the code clear, yet without "already defined somewhere" cpm2_immr.
So far, unmapping code is not implemented, but it's not a big deal to add it,
if the whole idea makes sense.
Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com>
2006-09-21 20:37:58 +02:00
|
|
|
cpmux->cmx_scr &= 0xffffff00;
|
|
|
|
cpmux->cmx_scr |= 0x0000001b;
|
2005-04-17 00:20:36 +02:00
|
|
|
pinfo->brg = 4;
|
POWERPC: Get rid of remapping the whole immr
The stuff below cleans up the code attempting to remap the whole cpm2_immr
early, as well as places happily assuming that fact. This is more like the 2.4
legacy stuff, and is at least confusing and unclear now.
To keep the world comfortable, a new mechanism is introduced: before accessing
specific immr register/register set, one needs to map it, using cpm2_map(<reg>),
for instance, access to CPM command register will look like
volatile cpm_cpm2_t *cp = cpm2_map(im_cpm);
keeping the code clear, yet without "already defined somewhere" cpm2_immr.
So far, unmapping code is not implemented, but it's not a big deal to add it,
if the whole idea makes sense.
Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com>
2006-09-21 20:37:58 +02:00
|
|
|
|
|
|
|
cpm2_unmap(cpmux);
|
|
|
|
cpm2_unmap(io);
|
2005-04-17 00:20:36 +02:00
|
|
|
}
|
2007-07-18 00:59:06 +02:00
|
|
|
#endif
|
2005-04-17 00:20:36 +02:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Allocate DP-Ram and memory buffers. We need to allocate a transmit and
|
|
|
|
* receive buffer descriptors from dual port ram, and a character
|
|
|
|
* buffer area from host mem. If we are allocating for the console we need
|
|
|
|
* to do it from bootmem
|
|
|
|
*/
|
|
|
|
int cpm_uart_allocbuf(struct uart_cpm_port *pinfo, unsigned int is_con)
|
|
|
|
{
|
|
|
|
int dpmemsz, memsz;
|
2007-09-28 21:06:16 +02:00
|
|
|
u8 __iomem *dp_mem;
|
2007-05-08 21:46:36 +02:00
|
|
|
unsigned long dp_offset;
|
2005-04-17 00:20:36 +02:00
|
|
|
u8 *mem_addr;
|
|
|
|
dma_addr_t dma_addr = 0;
|
|
|
|
|
|
|
|
pr_debug("CPM uart[%d]:allocbuf\n", pinfo->port.line);
|
|
|
|
|
|
|
|
dpmemsz = sizeof(cbd_t) * (pinfo->rx_nrfifos + pinfo->tx_nrfifos);
|
|
|
|
dp_offset = cpm_dpalloc(dpmemsz, 8);
|
2007-05-08 21:46:36 +02:00
|
|
|
if (IS_ERR_VALUE(dp_offset)) {
|
2005-04-17 00:20:36 +02:00
|
|
|
printk(KERN_ERR
|
|
|
|
"cpm_uart_cpm.c: could not allocate buffer descriptors\n");
|
|
|
|
return -ENOMEM;
|
|
|
|
}
|
|
|
|
|
|
|
|
dp_mem = cpm_dpram_addr(dp_offset);
|
|
|
|
|
|
|
|
memsz = L1_CACHE_ALIGN(pinfo->rx_nrfifos * pinfo->rx_fifosize) +
|
|
|
|
L1_CACHE_ALIGN(pinfo->tx_nrfifos * pinfo->tx_fifosize);
|
2006-04-25 18:26:46 +02:00
|
|
|
if (is_con) {
|
2005-04-17 00:20:36 +02:00
|
|
|
mem_addr = alloc_bootmem(memsz);
|
2006-05-24 19:40:18 +02:00
|
|
|
dma_addr = virt_to_bus(mem_addr);
|
2006-04-25 18:26:46 +02:00
|
|
|
}
|
2005-04-17 00:20:36 +02:00
|
|
|
else
|
|
|
|
mem_addr = dma_alloc_coherent(NULL, memsz, &dma_addr,
|
|
|
|
GFP_KERNEL);
|
|
|
|
|
|
|
|
if (mem_addr == NULL) {
|
|
|
|
cpm_dpfree(dp_offset);
|
|
|
|
printk(KERN_ERR
|
|
|
|
"cpm_uart_cpm.c: could not allocate coherent memory\n");
|
|
|
|
return -ENOMEM;
|
|
|
|
}
|
|
|
|
|
|
|
|
pinfo->dp_addr = dp_offset;
|
|
|
|
pinfo->mem_addr = mem_addr;
|
|
|
|
pinfo->dma_addr = dma_addr;
|
2006-04-25 18:26:46 +02:00
|
|
|
pinfo->mem_size = memsz;
|
2005-04-17 00:20:36 +02:00
|
|
|
|
|
|
|
pinfo->rx_buf = mem_addr;
|
|
|
|
pinfo->tx_buf = pinfo->rx_buf + L1_CACHE_ALIGN(pinfo->rx_nrfifos
|
|
|
|
* pinfo->rx_fifosize);
|
|
|
|
|
2007-09-28 21:06:16 +02:00
|
|
|
pinfo->rx_bd_base = (cbd_t __iomem *)dp_mem;
|
2005-04-17 00:20:36 +02:00
|
|
|
pinfo->tx_bd_base = pinfo->rx_bd_base + pinfo->rx_nrfifos;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
void cpm_uart_freebuf(struct uart_cpm_port *pinfo)
|
|
|
|
{
|
|
|
|
dma_free_coherent(NULL, L1_CACHE_ALIGN(pinfo->rx_nrfifos *
|
|
|
|
pinfo->rx_fifosize) +
|
|
|
|
L1_CACHE_ALIGN(pinfo->tx_nrfifos *
|
2007-07-24 22:53:07 +02:00
|
|
|
pinfo->tx_fifosize), (void __force *)pinfo->mem_addr,
|
2005-04-17 00:20:36 +02:00
|
|
|
pinfo->dma_addr);
|
|
|
|
|
|
|
|
cpm_dpfree(pinfo->dp_addr);
|
|
|
|
}
|
|
|
|
|
2007-07-18 00:59:06 +02:00
|
|
|
#ifndef CONFIG_PPC_CPM_NEW_BINDING
|
2005-04-17 00:20:36 +02:00
|
|
|
/* Setup any dynamic params in the uart desc */
|
2007-05-10 06:44:58 +02:00
|
|
|
int cpm_uart_init_portdesc(void)
|
2005-04-17 00:20:36 +02:00
|
|
|
{
|
POWERPC: Get rid of remapping the whole immr
The stuff below cleans up the code attempting to remap the whole cpm2_immr
early, as well as places happily assuming that fact. This is more like the 2.4
legacy stuff, and is at least confusing and unclear now.
To keep the world comfortable, a new mechanism is introduced: before accessing
specific immr register/register set, one needs to map it, using cpm2_map(<reg>),
for instance, access to CPM command register will look like
volatile cpm_cpm2_t *cp = cpm2_map(im_cpm);
keeping the code clear, yet without "already defined somewhere" cpm2_immr.
So far, unmapping code is not implemented, but it's not a big deal to add it,
if the whole idea makes sense.
Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com>
2006-09-21 20:37:58 +02:00
|
|
|
#if defined(CONFIG_SERIAL_CPM_SMC1) || defined(CONFIG_SERIAL_CPM_SMC2)
|
2007-02-15 18:43:06 +01:00
|
|
|
u16 *addr;
|
POWERPC: Get rid of remapping the whole immr
The stuff below cleans up the code attempting to remap the whole cpm2_immr
early, as well as places happily assuming that fact. This is more like the 2.4
legacy stuff, and is at least confusing and unclear now.
To keep the world comfortable, a new mechanism is introduced: before accessing
specific immr register/register set, one needs to map it, using cpm2_map(<reg>),
for instance, access to CPM command register will look like
volatile cpm_cpm2_t *cp = cpm2_map(im_cpm);
keeping the code clear, yet without "already defined somewhere" cpm2_immr.
So far, unmapping code is not implemented, but it's not a big deal to add it,
if the whole idea makes sense.
Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com>
2006-09-21 20:37:58 +02:00
|
|
|
#endif
|
2005-04-17 00:20:36 +02:00
|
|
|
pr_debug("CPM uart[-]:init portdesc\n");
|
|
|
|
|
|
|
|
cpm_uart_nr = 0;
|
|
|
|
#ifdef CONFIG_SERIAL_CPM_SMC1
|
POWERPC: Get rid of remapping the whole immr
The stuff below cleans up the code attempting to remap the whole cpm2_immr
early, as well as places happily assuming that fact. This is more like the 2.4
legacy stuff, and is at least confusing and unclear now.
To keep the world comfortable, a new mechanism is introduced: before accessing
specific immr register/register set, one needs to map it, using cpm2_map(<reg>),
for instance, access to CPM command register will look like
volatile cpm_cpm2_t *cp = cpm2_map(im_cpm);
keeping the code clear, yet without "already defined somewhere" cpm2_immr.
So far, unmapping code is not implemented, but it's not a big deal to add it,
if the whole idea makes sense.
Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com>
2006-09-21 20:37:58 +02:00
|
|
|
cpm_uart_ports[UART_SMC1].smcp = (smc_t *) cpm2_map(im_smc[0]);
|
2005-04-17 00:20:36 +02:00
|
|
|
cpm_uart_ports[UART_SMC1].port.mapbase =
|
POWERPC: Get rid of remapping the whole immr
The stuff below cleans up the code attempting to remap the whole cpm2_immr
early, as well as places happily assuming that fact. This is more like the 2.4
legacy stuff, and is at least confusing and unclear now.
To keep the world comfortable, a new mechanism is introduced: before accessing
specific immr register/register set, one needs to map it, using cpm2_map(<reg>),
for instance, access to CPM command register will look like
volatile cpm_cpm2_t *cp = cpm2_map(im_cpm);
keeping the code clear, yet without "already defined somewhere" cpm2_immr.
So far, unmapping code is not implemented, but it's not a big deal to add it,
if the whole idea makes sense.
Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com>
2006-09-21 20:37:58 +02:00
|
|
|
(unsigned long)cpm_uart_ports[UART_SMC1].smcp;
|
|
|
|
|
|
|
|
cpm_uart_ports[UART_SMC1].smcup =
|
|
|
|
(smc_uart_t *) cpm2_map_size(im_dprambase[PROFF_SMC1], PROFF_SMC_SIZE);
|
|
|
|
addr = (u16 *)cpm2_map_size(im_dprambase[PROFF_SMC1_BASE], 2);
|
|
|
|
*addr = PROFF_SMC1;
|
|
|
|
cpm2_unmap(addr);
|
|
|
|
|
2005-04-17 00:20:36 +02:00
|
|
|
cpm_uart_ports[UART_SMC1].smcp->smc_smcm |= (SMCM_RX | SMCM_TX);
|
|
|
|
cpm_uart_ports[UART_SMC1].smcp->smc_smcmr &= ~(SMCMR_REN | SMCMR_TEN);
|
2006-09-21 15:27:15 +02:00
|
|
|
cpm_uart_ports[UART_SMC1].port.uartclk = uart_clock();
|
2005-04-17 00:20:36 +02:00
|
|
|
cpm_uart_port_map[cpm_uart_nr++] = UART_SMC1;
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#ifdef CONFIG_SERIAL_CPM_SMC2
|
POWERPC: Get rid of remapping the whole immr
The stuff below cleans up the code attempting to remap the whole cpm2_immr
early, as well as places happily assuming that fact. This is more like the 2.4
legacy stuff, and is at least confusing and unclear now.
To keep the world comfortable, a new mechanism is introduced: before accessing
specific immr register/register set, one needs to map it, using cpm2_map(<reg>),
for instance, access to CPM command register will look like
volatile cpm_cpm2_t *cp = cpm2_map(im_cpm);
keeping the code clear, yet without "already defined somewhere" cpm2_immr.
So far, unmapping code is not implemented, but it's not a big deal to add it,
if the whole idea makes sense.
Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com>
2006-09-21 20:37:58 +02:00
|
|
|
cpm_uart_ports[UART_SMC2].smcp = (smc_t *) cpm2_map(im_smc[1]);
|
2005-04-17 00:20:36 +02:00
|
|
|
cpm_uart_ports[UART_SMC2].port.mapbase =
|
POWERPC: Get rid of remapping the whole immr
The stuff below cleans up the code attempting to remap the whole cpm2_immr
early, as well as places happily assuming that fact. This is more like the 2.4
legacy stuff, and is at least confusing and unclear now.
To keep the world comfortable, a new mechanism is introduced: before accessing
specific immr register/register set, one needs to map it, using cpm2_map(<reg>),
for instance, access to CPM command register will look like
volatile cpm_cpm2_t *cp = cpm2_map(im_cpm);
keeping the code clear, yet without "already defined somewhere" cpm2_immr.
So far, unmapping code is not implemented, but it's not a big deal to add it,
if the whole idea makes sense.
Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com>
2006-09-21 20:37:58 +02:00
|
|
|
(unsigned long)cpm_uart_ports[UART_SMC2].smcp;
|
|
|
|
|
|
|
|
cpm_uart_ports[UART_SMC2].smcup =
|
|
|
|
(smc_uart_t *) cpm2_map_size(im_dprambase[PROFF_SMC2], PROFF_SMC_SIZE);
|
|
|
|
addr = (u16 *)cpm2_map_size(im_dprambase[PROFF_SMC2_BASE], 2);
|
|
|
|
*addr = PROFF_SMC2;
|
|
|
|
cpm2_unmap(addr);
|
|
|
|
|
2005-04-17 00:20:36 +02:00
|
|
|
cpm_uart_ports[UART_SMC2].smcp->smc_smcm |= (SMCM_RX | SMCM_TX);
|
|
|
|
cpm_uart_ports[UART_SMC2].smcp->smc_smcmr &= ~(SMCMR_REN | SMCMR_TEN);
|
2006-09-21 15:27:15 +02:00
|
|
|
cpm_uart_ports[UART_SMC2].port.uartclk = uart_clock();
|
2005-04-17 00:20:36 +02:00
|
|
|
cpm_uart_port_map[cpm_uart_nr++] = UART_SMC2;
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#ifdef CONFIG_SERIAL_CPM_SCC1
|
POWERPC: Get rid of remapping the whole immr
The stuff below cleans up the code attempting to remap the whole cpm2_immr
early, as well as places happily assuming that fact. This is more like the 2.4
legacy stuff, and is at least confusing and unclear now.
To keep the world comfortable, a new mechanism is introduced: before accessing
specific immr register/register set, one needs to map it, using cpm2_map(<reg>),
for instance, access to CPM command register will look like
volatile cpm_cpm2_t *cp = cpm2_map(im_cpm);
keeping the code clear, yet without "already defined somewhere" cpm2_immr.
So far, unmapping code is not implemented, but it's not a big deal to add it,
if the whole idea makes sense.
Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com>
2006-09-21 20:37:58 +02:00
|
|
|
cpm_uart_ports[UART_SCC1].sccp = (scc_t *) cpm2_map(im_scc[0]);
|
2005-04-17 00:20:36 +02:00
|
|
|
cpm_uart_ports[UART_SCC1].port.mapbase =
|
POWERPC: Get rid of remapping the whole immr
The stuff below cleans up the code attempting to remap the whole cpm2_immr
early, as well as places happily assuming that fact. This is more like the 2.4
legacy stuff, and is at least confusing and unclear now.
To keep the world comfortable, a new mechanism is introduced: before accessing
specific immr register/register set, one needs to map it, using cpm2_map(<reg>),
for instance, access to CPM command register will look like
volatile cpm_cpm2_t *cp = cpm2_map(im_cpm);
keeping the code clear, yet without "already defined somewhere" cpm2_immr.
So far, unmapping code is not implemented, but it's not a big deal to add it,
if the whole idea makes sense.
Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com>
2006-09-21 20:37:58 +02:00
|
|
|
(unsigned long)cpm_uart_ports[UART_SCC1].sccp;
|
|
|
|
cpm_uart_ports[UART_SCC1].sccup =
|
|
|
|
(scc_uart_t *) cpm2_map_size(im_dprambase[PROFF_SCC1], PROFF_SCC_SIZE);
|
|
|
|
|
2005-04-17 00:20:36 +02:00
|
|
|
cpm_uart_ports[UART_SCC1].sccp->scc_sccm &=
|
|
|
|
~(UART_SCCM_TX | UART_SCCM_RX);
|
|
|
|
cpm_uart_ports[UART_SCC1].sccp->scc_gsmrl &=
|
|
|
|
~(SCC_GSMRL_ENR | SCC_GSMRL_ENT);
|
2006-09-21 15:27:15 +02:00
|
|
|
cpm_uart_ports[UART_SCC1].port.uartclk = uart_clock();
|
2005-04-17 00:20:36 +02:00
|
|
|
cpm_uart_port_map[cpm_uart_nr++] = UART_SCC1;
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#ifdef CONFIG_SERIAL_CPM_SCC2
|
POWERPC: Get rid of remapping the whole immr
The stuff below cleans up the code attempting to remap the whole cpm2_immr
early, as well as places happily assuming that fact. This is more like the 2.4
legacy stuff, and is at least confusing and unclear now.
To keep the world comfortable, a new mechanism is introduced: before accessing
specific immr register/register set, one needs to map it, using cpm2_map(<reg>),
for instance, access to CPM command register will look like
volatile cpm_cpm2_t *cp = cpm2_map(im_cpm);
keeping the code clear, yet without "already defined somewhere" cpm2_immr.
So far, unmapping code is not implemented, but it's not a big deal to add it,
if the whole idea makes sense.
Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com>
2006-09-21 20:37:58 +02:00
|
|
|
cpm_uart_ports[UART_SCC2].sccp = (scc_t *) cpm2_map(im_scc[1]);
|
2005-04-17 00:20:36 +02:00
|
|
|
cpm_uart_ports[UART_SCC2].port.mapbase =
|
POWERPC: Get rid of remapping the whole immr
The stuff below cleans up the code attempting to remap the whole cpm2_immr
early, as well as places happily assuming that fact. This is more like the 2.4
legacy stuff, and is at least confusing and unclear now.
To keep the world comfortable, a new mechanism is introduced: before accessing
specific immr register/register set, one needs to map it, using cpm2_map(<reg>),
for instance, access to CPM command register will look like
volatile cpm_cpm2_t *cp = cpm2_map(im_cpm);
keeping the code clear, yet without "already defined somewhere" cpm2_immr.
So far, unmapping code is not implemented, but it's not a big deal to add it,
if the whole idea makes sense.
Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com>
2006-09-21 20:37:58 +02:00
|
|
|
(unsigned long)cpm_uart_ports[UART_SCC2].sccp;
|
|
|
|
cpm_uart_ports[UART_SCC2].sccup =
|
|
|
|
(scc_uart_t *) cpm2_map_size(im_dprambase[PROFF_SCC2], PROFF_SCC_SIZE);
|
|
|
|
|
2005-04-17 00:20:36 +02:00
|
|
|
cpm_uart_ports[UART_SCC2].sccp->scc_sccm &=
|
|
|
|
~(UART_SCCM_TX | UART_SCCM_RX);
|
|
|
|
cpm_uart_ports[UART_SCC2].sccp->scc_gsmrl &=
|
|
|
|
~(SCC_GSMRL_ENR | SCC_GSMRL_ENT);
|
2006-09-21 15:27:15 +02:00
|
|
|
cpm_uart_ports[UART_SCC2].port.uartclk = uart_clock();
|
2005-04-17 00:20:36 +02:00
|
|
|
cpm_uart_port_map[cpm_uart_nr++] = UART_SCC2;
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#ifdef CONFIG_SERIAL_CPM_SCC3
|
POWERPC: Get rid of remapping the whole immr
The stuff below cleans up the code attempting to remap the whole cpm2_immr
early, as well as places happily assuming that fact. This is more like the 2.4
legacy stuff, and is at least confusing and unclear now.
To keep the world comfortable, a new mechanism is introduced: before accessing
specific immr register/register set, one needs to map it, using cpm2_map(<reg>),
for instance, access to CPM command register will look like
volatile cpm_cpm2_t *cp = cpm2_map(im_cpm);
keeping the code clear, yet without "already defined somewhere" cpm2_immr.
So far, unmapping code is not implemented, but it's not a big deal to add it,
if the whole idea makes sense.
Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com>
2006-09-21 20:37:58 +02:00
|
|
|
cpm_uart_ports[UART_SCC3].sccp = (scc_t *) cpm2_map(im_scc[2]);
|
2005-04-17 00:20:36 +02:00
|
|
|
cpm_uart_ports[UART_SCC3].port.mapbase =
|
POWERPC: Get rid of remapping the whole immr
The stuff below cleans up the code attempting to remap the whole cpm2_immr
early, as well as places happily assuming that fact. This is more like the 2.4
legacy stuff, and is at least confusing and unclear now.
To keep the world comfortable, a new mechanism is introduced: before accessing
specific immr register/register set, one needs to map it, using cpm2_map(<reg>),
for instance, access to CPM command register will look like
volatile cpm_cpm2_t *cp = cpm2_map(im_cpm);
keeping the code clear, yet without "already defined somewhere" cpm2_immr.
So far, unmapping code is not implemented, but it's not a big deal to add it,
if the whole idea makes sense.
Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com>
2006-09-21 20:37:58 +02:00
|
|
|
(unsigned long)cpm_uart_ports[UART_SCC3].sccp;
|
|
|
|
cpm_uart_ports[UART_SCC3].sccup =
|
|
|
|
(scc_uart_t *) cpm2_map_size(im_dprambase[PROFF_SCC3], PROFF_SCC_SIZE);
|
|
|
|
|
2005-04-17 00:20:36 +02:00
|
|
|
cpm_uart_ports[UART_SCC3].sccp->scc_sccm &=
|
|
|
|
~(UART_SCCM_TX | UART_SCCM_RX);
|
|
|
|
cpm_uart_ports[UART_SCC3].sccp->scc_gsmrl &=
|
|
|
|
~(SCC_GSMRL_ENR | SCC_GSMRL_ENT);
|
2006-09-21 15:27:15 +02:00
|
|
|
cpm_uart_ports[UART_SCC3].port.uartclk = uart_clock();
|
2005-04-17 00:20:36 +02:00
|
|
|
cpm_uart_port_map[cpm_uart_nr++] = UART_SCC3;
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#ifdef CONFIG_SERIAL_CPM_SCC4
|
POWERPC: Get rid of remapping the whole immr
The stuff below cleans up the code attempting to remap the whole cpm2_immr
early, as well as places happily assuming that fact. This is more like the 2.4
legacy stuff, and is at least confusing and unclear now.
To keep the world comfortable, a new mechanism is introduced: before accessing
specific immr register/register set, one needs to map it, using cpm2_map(<reg>),
for instance, access to CPM command register will look like
volatile cpm_cpm2_t *cp = cpm2_map(im_cpm);
keeping the code clear, yet without "already defined somewhere" cpm2_immr.
So far, unmapping code is not implemented, but it's not a big deal to add it,
if the whole idea makes sense.
Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com>
2006-09-21 20:37:58 +02:00
|
|
|
cpm_uart_ports[UART_SCC4].sccp = (scc_t *) cpm2_map(im_scc[3]);
|
2005-04-17 00:20:36 +02:00
|
|
|
cpm_uart_ports[UART_SCC4].port.mapbase =
|
POWERPC: Get rid of remapping the whole immr
The stuff below cleans up the code attempting to remap the whole cpm2_immr
early, as well as places happily assuming that fact. This is more like the 2.4
legacy stuff, and is at least confusing and unclear now.
To keep the world comfortable, a new mechanism is introduced: before accessing
specific immr register/register set, one needs to map it, using cpm2_map(<reg>),
for instance, access to CPM command register will look like
volatile cpm_cpm2_t *cp = cpm2_map(im_cpm);
keeping the code clear, yet without "already defined somewhere" cpm2_immr.
So far, unmapping code is not implemented, but it's not a big deal to add it,
if the whole idea makes sense.
Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com>
2006-09-21 20:37:58 +02:00
|
|
|
(unsigned long)cpm_uart_ports[UART_SCC4].sccp;
|
|
|
|
cpm_uart_ports[UART_SCC4].sccup =
|
|
|
|
(scc_uart_t *) cpm2_map_size(im_dprambase[PROFF_SCC4], PROFF_SCC_SIZE);
|
|
|
|
|
2005-04-17 00:20:36 +02:00
|
|
|
cpm_uart_ports[UART_SCC4].sccp->scc_sccm &=
|
|
|
|
~(UART_SCCM_TX | UART_SCCM_RX);
|
|
|
|
cpm_uart_ports[UART_SCC4].sccp->scc_gsmrl &=
|
|
|
|
~(SCC_GSMRL_ENR | SCC_GSMRL_ENT);
|
2006-09-21 15:27:15 +02:00
|
|
|
cpm_uart_ports[UART_SCC4].port.uartclk = uart_clock();
|
2005-04-17 00:20:36 +02:00
|
|
|
cpm_uart_port_map[cpm_uart_nr++] = UART_SCC4;
|
|
|
|
#endif
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
2007-07-18 00:59:06 +02:00
|
|
|
#endif
|