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Message-Id: <20180406011720.7728-3-mgreer@animalcreek.com>
Date: Thu, 5 Apr 2018 18:17:17 -0700
From: Mark Greer <mgreer@...malcreek.com>
To: Benjamin Herrenschmidt <benh@...nel.crashing.org>,
Paul Mackerras <paulus@...ba.org>,
Michael Ellerman <mpe@...erman.id.au>
Cc: Remi Machet <rmachet@...dia.com>,
Dale Farnsworth <dale@...nsworth.org>,
linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
Mark Greer <mgreer@...malcreek.com>
Subject: [PATCH 2/5] 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@...malcreek.com>
---
arch/powerpc/boot/Makefile | 2 +-
arch/powerpc/boot/mpsc.c | 169 ---------------------------------------------
arch/powerpc/boot/ops.h | 1 -
arch/powerpc/boot/serial.c | 4 --
4 files changed, 1 insertion(+), 175 deletions(-)
delete mode 100644 arch/powerpc/boot/mpsc.c
diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile
index 70bf9b409fae..58f2dbfba275 100644
--- a/arch/powerpc/boot/Makefile
+++ b/arch/powerpc/boot/Makefile
@@ -120,7 +120,7 @@ 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
diff --git a/arch/powerpc/boot/mpsc.c b/arch/powerpc/boot/mpsc.c
deleted file mode 100644
index 425ad88cce8d..000000000000
--- a/arch/powerpc/boot/mpsc.c
+++ /dev/null
@@ -1,169 +0,0 @@
-/*
- * MPSC/UART driver for the Marvell mv64360, mv64460, ...
- *
- * Author: Mark A. Greer <mgreer@...sta.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;
-}
diff --git a/arch/powerpc/boot/ops.h b/arch/powerpc/boot/ops.h
index fad1862f4b2d..cd043726ed88 100644
--- a/arch/powerpc/boot/ops.h
+++ b/arch/powerpc/boot/ops.h
@@ -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);
diff --git a/arch/powerpc/boot/serial.c b/arch/powerpc/boot/serial.c
index 88955095ec07..48e3743faedf 100644
--- a/arch/powerpc/boot/serial.c
+++ b/arch/powerpc/boot/serial.c
@@ -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") ||
--
2.16.2
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