help
Support for S3C2440 Samsung Mobile CPU based systems.
+config CPU_S3C2442
+ bool
+ depends on ARCH_S3C2410
+ select CPU_ARM920T
+ select S3C2410_CLOCK
+ select S3C2410_GPIO
+ select S3C2410_PM if PM
+ select CPU_S3C244X
+ select CPU_LLSERIAL_S3C2440
+ help
+ Support for S3C2442 Samsung Mobile CPU based systems.
+
config S3C2440_DMA
bool
depends on ARCH_S3C2410 && CPU_S3C24405B
obj- :=
obj-$(CONFIG_CPU_S3C2440) += s3c2440.o dsc.o
+obj-$(CONFIG_CPU_S3C2442) += s3c2442.o
+
obj-$(CONFIG_CPU_S3C2440) += irq.o
obj-$(CONFIG_CPU_S3C2440) += clock.o
obj-$(CONFIG_S3C2440_DMA) += dma.o
--- /dev/null
+/* linux/arch/arm/mach-s3c2442/s3c2442.c
+ *
+ * Copyright (c) 2004-2005 Simtec Electronics
+ * http://armlinux.simtec.co.uk/
+ * Ben Dooks <ben@simtec.co.uk>
+ *
+ * S3C2442 core and lock support
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+*/
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/list.h>
+#include <linux/errno.h>
+#include <linux/err.h>
+#include <linux/device.h>
+#include <linux/sysdev.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/mutex.h>
+#include <linux/clk.h>
+#include <linux/io.h>
+
+#include <mach/hardware.h>
+#include <asm/atomic.h>
+#include <asm/irq.h>
+
+#include <mach/regs-clock.h>
+
+#include <plat/clock.h>
+#include <plat/cpu.h>
+
+/* S3C2442 extended clock support */
+
+static unsigned long s3c2442_camif_upll_round(struct clk *clk,
+ unsigned long rate)
+{
+ unsigned long parent_rate = clk_get_rate(clk->parent);
+ int div;
+
+ if (rate > parent_rate)
+ return parent_rate;
+
+ div = parent_rate / rate;
+
+ if (div == 3)
+ return parent_rate / 3;
+
+ /* note, we remove the +/- 1 calculations for the divisor */
+
+ div /= 2;
+
+ if (div < 1)
+ div = 1;
+ else if (div > 16)
+ div = 16;
+
+ return parent_rate / (div * 2);
+}
+
+static int s3c2442_camif_upll_setrate(struct clk *clk, unsigned long rate)
+{
+ unsigned long parent_rate = clk_get_rate(clk->parent);
+ unsigned long camdivn = __raw_readl(S3C2440_CAMDIVN);
+
+ rate = s3c2442_camif_upll_round(clk, rate);
+
+ camdivn &= ~S3C2442_CAMDIVN_CAMCLK_DIV3;
+
+ if (rate == parent_rate) {
+ camdivn &= ~S3C2440_CAMDIVN_CAMCLK_SEL;
+ } else if ((parent_rate / rate) == 3) {
+ camdivn |= S3C2440_CAMDIVN_CAMCLK_SEL;
+ camdivn |= S3C2442_CAMDIVN_CAMCLK_DIV3;
+ } else {
+ camdivn &= ~S3C2440_CAMDIVN_CAMCLK_MASK;
+ camdivn |= S3C2440_CAMDIVN_CAMCLK_SEL;
+ camdivn |= (((parent_rate / rate) / 2) - 1);
+ }
+
+ __raw_writel(camdivn, S3C2440_CAMDIVN);
+
+ return 0;
+}
+
+/* Extra S3C2442 clocks */
+
+static struct clk s3c2442_clk_cam = {
+ .name = "camif",
+ .id = -1,
+ .enable = s3c2410_clkcon_enable,
+ .ctrlbit = S3C2440_CLKCON_CAMERA,
+};
+
+static struct clk s3c2442_clk_cam_upll = {
+ .name = "camif-upll",
+ .id = -1,
+ .ops = &(struct clk_ops) {
+ .set_rate = s3c2442_camif_upll_setrate,
+ .round_rate = s3c2442_camif_upll_round,
+ },
+};
+
+static int s3c2442_clk_add(struct sys_device *sysdev)
+{
+ struct clk *clock_upll;
+ struct clk *clock_h;
+ struct clk *clock_p;
+
+ clock_p = clk_get(NULL, "pclk");
+ clock_h = clk_get(NULL, "hclk");
+ clock_upll = clk_get(NULL, "upll");
+
+ if (IS_ERR(clock_p) || IS_ERR(clock_h) || IS_ERR(clock_upll)) {
+ printk(KERN_ERR "S3C2442: Failed to get parent clocks\n");
+ return -EINVAL;
+ }
+
+ s3c2442_clk_cam.parent = clock_h;
+ s3c2442_clk_cam_upll.parent = clock_upll;
+
+ s3c24xx_register_clock(&s3c2442_clk_cam);
+ s3c24xx_register_clock(&s3c2442_clk_cam_upll);
+
+ clk_disable(&s3c2442_clk_cam);
+
+ return 0;
+}
+
+static struct sysdev_driver s3c2442_clk_driver = {
+ .add = s3c2442_clk_add,
+};
+
+static __init int s3c2442_clk_init(void)
+{
+ return sysdev_driver_register(&s3c2442_sysclass, &s3c2442_clk_driver);
+}
+
+arch_initcall(s3c2442_clk_init);
+
+
+static struct sys_device s3c2442_sysdev = {
+ .cls = &s3c2442_sysclass,
+};
+
+int __init s3c2442_init(void)
+{
+ printk("S3C2442: Initialising architecture\n");
+
+ return sysdev_register(&s3c2442_sysdev);
+}
#
# Licensed under GPLv2
-config CPU_S3C2442
- bool
- depends on ARCH_S3C2410
- select CPU_ARM920T
- select S3C2410_CLOCK
- select S3C2410_GPIO
- select S3C2410_PM if PM
- select CPU_S3C244X
- select CPU_LLSERIAL_S3C2440
- help
- Support for S3C2442 Samsung Mobile CPU based systems.
+++ /dev/null
-/* linux/arch/arm/mach-s3c2442/s3c2442.c
- *
- * Copyright (c) 2004-2005 Simtec Electronics
- * http://armlinux.simtec.co.uk/
- * Ben Dooks <ben@simtec.co.uk>
- *
- * S3C2442 core and lock support
- *
- * 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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-*/
-
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/list.h>
-#include <linux/errno.h>
-#include <linux/err.h>
-#include <linux/device.h>
-#include <linux/sysdev.h>
-#include <linux/interrupt.h>
-#include <linux/ioport.h>
-#include <linux/mutex.h>
-#include <linux/clk.h>
-#include <linux/io.h>
-
-#include <mach/hardware.h>
-#include <asm/atomic.h>
-#include <asm/irq.h>
-
-#include <mach/regs-clock.h>
-
-#include <plat/clock.h>
-#include <plat/cpu.h>
-
-/* S3C2442 extended clock support */
-
-static unsigned long s3c2442_camif_upll_round(struct clk *clk,
- unsigned long rate)
-{
- unsigned long parent_rate = clk_get_rate(clk->parent);
- int div;
-
- if (rate > parent_rate)
- return parent_rate;
-
- div = parent_rate / rate;
-
- if (div == 3)
- return parent_rate / 3;
-
- /* note, we remove the +/- 1 calculations for the divisor */
-
- div /= 2;
-
- if (div < 1)
- div = 1;
- else if (div > 16)
- div = 16;
-
- return parent_rate / (div * 2);
-}
-
-static int s3c2442_camif_upll_setrate(struct clk *clk, unsigned long rate)
-{
- unsigned long parent_rate = clk_get_rate(clk->parent);
- unsigned long camdivn = __raw_readl(S3C2440_CAMDIVN);
-
- rate = s3c2442_camif_upll_round(clk, rate);
-
- camdivn &= ~S3C2442_CAMDIVN_CAMCLK_DIV3;
-
- if (rate == parent_rate) {
- camdivn &= ~S3C2440_CAMDIVN_CAMCLK_SEL;
- } else if ((parent_rate / rate) == 3) {
- camdivn |= S3C2440_CAMDIVN_CAMCLK_SEL;
- camdivn |= S3C2442_CAMDIVN_CAMCLK_DIV3;
- } else {
- camdivn &= ~S3C2440_CAMDIVN_CAMCLK_MASK;
- camdivn |= S3C2440_CAMDIVN_CAMCLK_SEL;
- camdivn |= (((parent_rate / rate) / 2) - 1);
- }
-
- __raw_writel(camdivn, S3C2440_CAMDIVN);
-
- return 0;
-}
-
-/* Extra S3C2442 clocks */
-
-static struct clk s3c2442_clk_cam = {
- .name = "camif",
- .id = -1,
- .enable = s3c2410_clkcon_enable,
- .ctrlbit = S3C2440_CLKCON_CAMERA,
-};
-
-static struct clk s3c2442_clk_cam_upll = {
- .name = "camif-upll",
- .id = -1,
- .ops = &(struct clk_ops) {
- .set_rate = s3c2442_camif_upll_setrate,
- .round_rate = s3c2442_camif_upll_round,
- },
-};
-
-static int s3c2442_clk_add(struct sys_device *sysdev)
-{
- struct clk *clock_upll;
- struct clk *clock_h;
- struct clk *clock_p;
-
- clock_p = clk_get(NULL, "pclk");
- clock_h = clk_get(NULL, "hclk");
- clock_upll = clk_get(NULL, "upll");
-
- if (IS_ERR(clock_p) || IS_ERR(clock_h) || IS_ERR(clock_upll)) {
- printk(KERN_ERR "S3C2442: Failed to get parent clocks\n");
- return -EINVAL;
- }
-
- s3c2442_clk_cam.parent = clock_h;
- s3c2442_clk_cam_upll.parent = clock_upll;
-
- s3c24xx_register_clock(&s3c2442_clk_cam);
- s3c24xx_register_clock(&s3c2442_clk_cam_upll);
-
- clk_disable(&s3c2442_clk_cam);
-
- return 0;
-}
-
-static struct sysdev_driver s3c2442_clk_driver = {
- .add = s3c2442_clk_add,
-};
-
-static __init int s3c2442_clk_init(void)
-{
- return sysdev_driver_register(&s3c2442_sysclass, &s3c2442_clk_driver);
-}
-
-arch_initcall(s3c2442_clk_init);
-
-
-static struct sys_device s3c2442_sysdev = {
- .cls = &s3c2442_sysclass,
-};
-
-int __init s3c2442_init(void)
-{
- printk("S3C2442: Initialising architecture\n");
-
- return sysdev_register(&s3c2442_sysdev);
-}
projects / firefly-linux-kernel-4.4.55.git / commitdiff