summaryrefslogtreecommitdiffstats
path: root/arch/arm/plat-stmp3xxx/core.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/plat-stmp3xxx/core.c')
-rw-r--r--arch/arm/plat-stmp3xxx/core.c128
1 files changed, 0 insertions, 128 deletions
diff --git a/arch/arm/plat-stmp3xxx/core.c b/arch/arm/plat-stmp3xxx/core.c
deleted file mode 100644
index 37b8a09148a4..000000000000
--- a/arch/arm/plat-stmp3xxx/core.c
+++ /dev/null
@@ -1,128 +0,0 @@
-/*
- * Freescale STMP37XX/STMP378X core routines
- *
- * Embedded Alley Solutions, Inc <source@embeddedalley.com>
- *
- * Copyright 2008 Freescale Semiconductor, Inc. All Rights Reserved.
- * Copyright 2008 Embedded Alley Solutions, Inc All Rights Reserved.
- */
-
-/*
- * The code contained herein is licensed under the GNU General Public
- * License. You may obtain a copy of the GNU General Public License
- * Version 2 or later at the following locations:
- *
- * http://www.opensource.org/licenses/gpl-license.html
- * http://www.gnu.org/copyleft/gpl.html
- */
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/io.h>
-
-#include <mach/stmp3xxx.h>
-#include <mach/platform.h>
-#include <mach/dma.h>
-#include <mach/regs-clkctrl.h>
-
-static int __stmp3xxx_reset_block(void __iomem *hwreg, int just_enable)
-{
- u32 c;
- int timeout;
-
- /* the process of software reset of IP block is done
- in several steps:
-
- - clear SFTRST and wait for block is enabled;
- - clear clock gating (CLKGATE bit);
- - set the SFTRST again and wait for block is in reset;
- - clear SFTRST and wait for reset completion.
- */
- c = __raw_readl(hwreg);
- c &= ~(1<<31); /* clear SFTRST */
- __raw_writel(c, hwreg);
- for (timeout = 1000000; timeout > 0; timeout--)
- /* still in SFTRST state ? */
- if ((__raw_readl(hwreg) & (1<<31)) == 0)
- break;
- if (timeout <= 0) {
- printk(KERN_ERR"%s(%p): timeout when enabling\n",
- __func__, hwreg);
- return -ETIME;
- }
-
- c = __raw_readl(hwreg);
- c &= ~(1<<30); /* clear CLKGATE */
- __raw_writel(c, hwreg);
-
- if (!just_enable) {
- c = __raw_readl(hwreg);
- c |= (1<<31); /* now again set SFTRST */
- __raw_writel(c, hwreg);
- for (timeout = 1000000; timeout > 0; timeout--)
- /* poll until CLKGATE set */
- if (__raw_readl(hwreg) & (1<<30))
- break;
- if (timeout <= 0) {
- printk(KERN_ERR"%s(%p): timeout when resetting\n",
- __func__, hwreg);
- return -ETIME;
- }
-
- c = __raw_readl(hwreg);
- c &= ~(1<<31); /* clear SFTRST */
- __raw_writel(c, hwreg);
- for (timeout = 1000000; timeout > 0; timeout--)
- /* still in SFTRST state ? */
- if ((__raw_readl(hwreg) & (1<<31)) == 0)
- break;
- if (timeout <= 0) {
- printk(KERN_ERR"%s(%p): timeout when enabling "
- "after reset\n", __func__, hwreg);
- return -ETIME;
- }
-
- c = __raw_readl(hwreg);
- c &= ~(1<<30); /* clear CLKGATE */
- __raw_writel(c, hwreg);
- }
- for (timeout = 1000000; timeout > 0; timeout--)
- /* still in SFTRST state ? */
- if ((__raw_readl(hwreg) & (1<<30)) == 0)
- break;
-
- if (timeout <= 0) {
- printk(KERN_ERR"%s(%p): timeout when unclockgating\n",
- __func__, hwreg);
- return -ETIME;
- }
-
- return 0;
-}
-
-int stmp3xxx_reset_block(void __iomem *hwreg, int just_enable)
-{
- int try = 10;
- int r;
-
- while (try--) {
- r = __stmp3xxx_reset_block(hwreg, just_enable);
- if (!r)
- break;
- pr_debug("%s: try %d failed\n", __func__, 10 - try);
- }
- return r;
-}
-EXPORT_SYMBOL(stmp3xxx_reset_block);
-
-struct platform_device stmp3xxx_dbguart = {
- .name = "stmp3xxx-dbguart",
- .id = -1,
-};
-
-void __init stmp3xxx_init(void)
-{
- /* Turn off auto-slow and other tricks */
- stmp3xxx_clearl(0x7f00000, REGS_CLKCTRL_BASE + HW_CLKCTRL_HBUS);
-
- stmp3xxx_dma_init();
-}
OpenPOWER on IntegriCloud