mirrors
/
linux-stable
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
1
0
Fork 0
Code Issues Releases Wiki Activity

powerpc/boot: Remove support for Marvell MPSC serial controller 

There are no longer any platforms that use Marvell's MPSC serial
controller so remove its driver.

Signed-off-by: Mark Greer <mgreer@animalcreek.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Mark Greer 2018-04-05 18:17:17 -07:00 committed by Michael Ellerman
parent 92c8c16f34
commit 30f4bbe047
4 changed files with 1 additions and 175 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/powerpc/boot/Makefile
View File

@ -126,7 +126,7 @@ src-wlib-$(CONFIG_40x) += 4xx.c planetcore.c
src-wlib-$(CONFIG_44x) += 4xx.c ebony.c bamboo.c
src-wlib-$(CONFIG_PPC_8xx) += mpc8xx.c planetcore.c fsl-soc.c
src-wlib-$(CONFIG_PPC_82xx) += pq2.c fsl-soc.c planetcore.c
src-wlib-$(CONFIG_EMBEDDED6xx) += mpsc.c mv64x60.c mv64x60_i2c.c ugecon.c fsl-soc.c
src-wlib-$(CONFIG_EMBEDDED6xx) += mv64x60.c mv64x60_i2c.c ugecon.c fsl-soc.c
src-wlib-$(CONFIG_XILINX_VIRTEX) += uartlite.c
src-wlib-$(CONFIG_CPM) += cpm-serial.c

169
arch/powerpc/boot/mpsc.c
View File

@ -1,169 +0,0 @@
/*
* MPSC/UART driver for the Marvell mv64360, mv64460, ...
*
* Author: Mark A. Greer <mgreer@mvista.com>
*
* 2007 (c) MontaVista Software, Inc. This file is licensed under
* the terms of the GNU General Public License version 2. This program
* is licensed "as is" without any warranty of any kind, whether express
* or implied.
*/
#include <stdarg.h>
#include <stddef.h>
#include "types.h"
#include "string.h"
#include "stdio.h"
#include "io.h"
#include "ops.h"
#define MPSC_CHR_1 0x000c
#define MPSC_CHR_2 0x0010
#define MPSC_CHR_2_TA (1<<7)
#define MPSC_CHR_2_TCS (1<<9)
#define MPSC_CHR_2_RA (1<<23)
#define MPSC_CHR_2_CRD (1<<25)
#define MPSC_CHR_2_EH (1<<31)
#define MPSC_CHR_4 0x0018
#define MPSC_CHR_4_Z (1<<29)
#define MPSC_CHR_5 0x001c
#define MPSC_CHR_5_CTL1_INTR (1<<12)
#define MPSC_CHR_5_CTL1_VALID (1<<15)
#define MPSC_CHR_10 0x0030
#define MPSC_INTR_CAUSE 0x0000
#define MPSC_INTR_CAUSE_RCC (1<<6)
#define MPSC_INTR_MASK 0x0080
#define SDMA_SDCM 0x0008
#define SDMA_SDCM_AR (1<<15)
#define SDMA_SDCM_AT (1<<31)
static volatile char *mpsc_base;
static volatile char *mpscintr_base;
static u32 chr1, chr2;
static int mpsc_open(void)
{
chr1 = in_le32((u32 *)(mpsc_base + MPSC_CHR_1)) & 0x00ff0000;
chr2 = in_le32((u32 *)(mpsc_base + MPSC_CHR_2)) & ~(MPSC_CHR_2_TA
| MPSC_CHR_2_TCS | MPSC_CHR_2_RA | MPSC_CHR_2_CRD
| MPSC_CHR_2_EH);
out_le32((u32 *)(mpsc_base + MPSC_CHR_4), MPSC_CHR_4_Z);
out_le32((u32 *)(mpsc_base + MPSC_CHR_5),
MPSC_CHR_5_CTL1_INTR | MPSC_CHR_5_CTL1_VALID);
out_le32((u32 *)(mpsc_base + MPSC_CHR_2), chr2 | MPSC_CHR_2_EH);
return 0;
}
static void mpsc_putc(unsigned char c)
{
while (in_le32((u32 *)(mpsc_base + MPSC_CHR_2)) & MPSC_CHR_2_TCS);
out_le32((u32 *)(mpsc_base + MPSC_CHR_1), chr1 | c);
out_le32((u32 *)(mpsc_base + MPSC_CHR_2), chr2 | MPSC_CHR_2_TCS);
}
static unsigned char mpsc_getc(void)
{
u32 cause = 0;
unsigned char c;
while (!(cause & MPSC_INTR_CAUSE_RCC))
cause = in_le32((u32 *)(mpscintr_base + MPSC_INTR_CAUSE));
c = in_8((u8 *)(mpsc_base + MPSC_CHR_10 + 2));
out_8((u8 *)(mpsc_base + MPSC_CHR_10 + 2), c);
out_le32((u32 *)(mpscintr_base + MPSC_INTR_CAUSE),
cause & ~MPSC_INTR_CAUSE_RCC);
return c;
}
static u8 mpsc_tstc(void)
{
return (u8)((in_le32((u32 *)(mpscintr_base + MPSC_INTR_CAUSE))
& MPSC_INTR_CAUSE_RCC) != 0);
}
static void mpsc_stop_dma(volatile char *sdma_base)
{
out_le32((u32 *)(mpsc_base + MPSC_CHR_2),MPSC_CHR_2_TA | MPSC_CHR_2_RA);
out_le32((u32 *)(sdma_base + SDMA_SDCM), SDMA_SDCM_AR | SDMA_SDCM_AT);
while ((in_le32((u32 *)(sdma_base + SDMA_SDCM))
& (SDMA_SDCM_AR | SDMA_SDCM_AT)) != 0)
udelay(100);
}
static volatile char *mpsc_get_virtreg_of_phandle(void *devp, char *prop)
{
void *v;
int n;
n = getprop(devp, prop, &v, sizeof(v));
if (n != sizeof(v))
goto err_out;
devp = find_node_by_linuxphandle((u32)v);
if (devp == NULL)
goto err_out;
n = getprop(devp, "virtual-reg", &v, sizeof(v));
if (n == sizeof(v))
return v;
err_out:
return NULL;
}
int mpsc_console_init(void *devp, struct serial_console_data *scdp)
{
void *v;
int n, reg_set;
volatile char *sdma_base;
n = getprop(devp, "virtual-reg", &v, sizeof(v));
if (n != sizeof(v))
goto err_out;
mpsc_base = v;
sdma_base = mpsc_get_virtreg_of_phandle(devp, "sdma");
if (sdma_base == NULL)
goto err_out;
mpscintr_base = mpsc_get_virtreg_of_phandle(devp, "mpscintr");
if (mpscintr_base == NULL)
goto err_out;
n = getprop(devp, "cell-index", &v, sizeof(v));
if (n != sizeof(v))
goto err_out;
reg_set = (int)v;
mpscintr_base += (reg_set == 0) ? 0x4 : 0xc;
/* Make sure the mpsc ctlrs are shutdown */
out_le32((u32 *)(mpscintr_base + MPSC_INTR_CAUSE), 0);
out_le32((u32 *)(mpscintr_base + MPSC_INTR_CAUSE), 0);
out_le32((u32 *)(mpscintr_base + MPSC_INTR_MASK), 0);
out_le32((u32 *)(mpscintr_base + MPSC_INTR_MASK), 0);
mpsc_stop_dma(sdma_base);
scdp->open = mpsc_open;
scdp->putc = mpsc_putc;
scdp->getc = mpsc_getc;
scdp->tstc = mpsc_tstc;
scdp->close = NULL;
return 0;
err_out:
return -1;
}

1
arch/powerpc/boot/ops.h
View File

@ -86,7 +86,6 @@ void start(void);
void fdt_init(void *blob);
int serial_console_init(void);
int ns16550_console_init(void *devp, struct serial_console_data *scdp);
int mpsc_console_init(void *devp, struct serial_console_data *scdp);
int cpm_console_init(void *devp, struct serial_console_data *scdp);
int mpc5200_psc_console_init(void *devp, struct serial_console_data *scdp);
int uartlite_console_init(void *devp, struct serial_console_data *scdp);

4
arch/powerpc/boot/serial.c
View File

@ -120,10 +120,6 @@ int serial_console_init(void)
if (dt_is_compatible(devp, "ns16550") ||
dt_is_compatible(devp, "pnpPNP,501"))
rc = ns16550_console_init(devp, &serial_cd);
#ifdef CONFIG_EMBEDDED6xx
else if (dt_is_compatible(devp, "marvell,mv64360-mpsc"))
rc = mpsc_console_init(devp, &serial_cd);
#endif
#ifdef CONFIG_CPM
else if (dt_is_compatible(devp, "fsl,cpm1-scc-uart") ||
dt_is_compatible(devp, "fsl,cpm1-smc-uart") ||