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authorRussell King <rmk@dyn-67.arm.linux.org.uk>2009-06-11 01:40:55 +0400
committerRussell King <rmk+kernel@arm.linux.org.uk>2009-06-11 01:41:06 +0400
commit547c32aeb5a24178ef20488ae0508efcc32ae8e4 (patch)
treefdc33154820cfddc845cef2f67380dace655b28f /arch/arm/plat-s3c64xx/include
parentb0efb42478c81ed0ed9aa0dc444db200c32624f0 (diff)
parent99ae99533a059750c4b0f76295625b8ac5ea751a (diff)
downloadlinux-547c32aeb5a24178ef20488ae0508efcc32ae8e4.tar.xz
Merge branch for-rmk-devel of git://aeryn.fluff.org.uk/bjdooks/linux into devel
Diffstat (limited to 'arch/arm/plat-s3c64xx/include')
-rw-r--r--arch/arm/plat-s3c64xx/include/plat/dma-plat.h70
-rw-r--r--arch/arm/plat-s3c64xx/include/plat/irqs.h1
-rw-r--r--arch/arm/plat-s3c64xx/include/plat/pm-core.h98
-rw-r--r--arch/arm/plat-s3c64xx/include/plat/regs-clock.h1
-rw-r--r--arch/arm/plat-s3c64xx/include/plat/s3c6400.h3
5 files changed, 172 insertions, 1 deletions
diff --git a/arch/arm/plat-s3c64xx/include/plat/dma-plat.h b/arch/arm/plat-s3c64xx/include/plat/dma-plat.h
new file mode 100644
index 000000000000..0c30dd986725
--- /dev/null
+++ b/arch/arm/plat-s3c64xx/include/plat/dma-plat.h
@@ -0,0 +1,70 @@
+/* linux/arch/arm/plat-s3c64xx/include/plat/dma-plat.h
+ *
+ * Copyright 2009 Openmoko, Inc.
+ * Copyright 2009 Simtec Electronics
+ * Ben Dooks <ben@simtec.co.uk>
+ * http://armlinux.simtec.co.uk/
+ *
+ * S3C64XX DMA core
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+#define DMACH_LOW_LEVEL (1<<28) /* use this to specifiy hardware ch no */
+
+struct s3c64xx_dma_buff;
+
+/** s3c64xx_dma_buff - S3C64XX DMA buffer descriptor
+ * @next: Pointer to next buffer in queue or ring.
+ * @pw: Client provided identifier
+ * @lli: Pointer to hardware descriptor this buffer is associated with.
+ * @lli_dma: Hardare address of the descriptor.
+ */
+struct s3c64xx_dma_buff {
+ struct s3c64xx_dma_buff *next;
+
+ void *pw;
+ struct pl080_lli *lli;
+ dma_addr_t lli_dma;
+};
+
+struct s3c64xx_dmac;
+
+struct s3c2410_dma_chan {
+ unsigned char number; /* number of this dma channel */
+ unsigned char in_use; /* channel allocated */
+ unsigned char bit; /* bit for enable/disable/etc */
+ unsigned char hw_width;
+ unsigned char peripheral;
+
+ unsigned int flags;
+ enum s3c2410_dmasrc source;
+
+
+ dma_addr_t dev_addr;
+
+ struct s3c2410_dma_client *client;
+ struct s3c64xx_dmac *dmac; /* pointer to controller */
+
+ void __iomem *regs;
+
+ /* cdriver callbacks */
+ s3c2410_dma_cbfn_t callback_fn; /* buffer done callback */
+ s3c2410_dma_opfn_t op_fn; /* channel op callback */
+
+ /* buffer list and information */
+ struct s3c64xx_dma_buff *curr; /* current dma buffer */
+ struct s3c64xx_dma_buff *next; /* next buffer to load */
+ struct s3c64xx_dma_buff *end; /* end of queue */
+
+ /* note, when channel is running in circular mode, curr is the
+ * first buffer enqueued, end is the last and curr is where the
+ * last buffer-done event is set-at. The buffers are not freed
+ * and the last buffer hardware descriptor points back to the
+ * first.
+ */
+};
+
+#include <plat/dma-core.h>
diff --git a/arch/arm/plat-s3c64xx/include/plat/irqs.h b/arch/arm/plat-s3c64xx/include/plat/irqs.h
index f865bf4d709e..743a70094d04 100644
--- a/arch/arm/plat-s3c64xx/include/plat/irqs.h
+++ b/arch/arm/plat-s3c64xx/include/plat/irqs.h
@@ -157,6 +157,7 @@
#define S3C_EINT(x) ((x) + S3C_IRQ_EINT_BASE)
#define IRQ_EINT(x) S3C_EINT(x)
+#define IRQ_EINT_BIT(x) ((x) - S3C_EINT(0))
/* Next the external interrupt groups. These are similar to the IRQ_EINT(x)
* that they are sourced from the GPIO pins but with a different scheme for
diff --git a/arch/arm/plat-s3c64xx/include/plat/pm-core.h b/arch/arm/plat-s3c64xx/include/plat/pm-core.h
new file mode 100644
index 000000000000..d347de3ba0dc
--- /dev/null
+++ b/arch/arm/plat-s3c64xx/include/plat/pm-core.h
@@ -0,0 +1,98 @@
+/* linux/arch/arm/plat-s3c64xx/include/plat/pm-core.h
+ *
+ * Copyright 2008 Openmoko, Inc.
+ * Copyright 2008 Simtec Electronics
+ * Ben Dooks <ben@simtec.co.uk>
+ * http://armlinux.simtec.co.uk/
+ *
+ * S3C64XX - PM core support for arch/arm/plat-s3c/pm.c
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <plat/regs-gpio.h>
+
+static inline void s3c_pm_debug_init_uart(void)
+{
+ u32 tmp = __raw_readl(S3C_PCLK_GATE);
+
+ /* As a note, since the S3C64XX UARTs generally have multiple
+ * clock sources, we simply enable PCLK at the moment and hope
+ * that the resume settings for the UART are suitable for the
+ * use with PCLK.
+ */
+
+ tmp |= S3C_CLKCON_PCLK_UART0;
+ tmp |= S3C_CLKCON_PCLK_UART1;
+ tmp |= S3C_CLKCON_PCLK_UART2;
+ tmp |= S3C_CLKCON_PCLK_UART3;
+
+ __raw_writel(tmp, S3C_PCLK_GATE);
+ udelay(10);
+}
+
+static inline void s3c_pm_arch_prepare_irqs(void)
+{
+ /* VIC should have already been taken care of */
+
+ /* clear any pending EINT0 interrupts */
+ __raw_writel(__raw_readl(S3C64XX_EINT0PEND), S3C64XX_EINT0PEND);
+}
+
+static inline void s3c_pm_arch_stop_clocks(void)
+{
+}
+
+static inline void s3c_pm_arch_show_resume_irqs(void)
+{
+}
+
+/* make these defines, we currently do not have any need to change
+ * the IRQ wake controls depending on the CPU we are running on */
+
+#define s3c_irqwake_eintallow ((1 << 28) - 1)
+#define s3c_irqwake_intallow (0)
+
+static inline void s3c_pm_arch_update_uart(void __iomem *regs,
+ struct pm_uart_save *save)
+{
+ u32 ucon = __raw_readl(regs + S3C2410_UCON);
+ u32 ucon_clk = ucon & S3C6400_UCON_CLKMASK;
+ u32 save_clk = save->ucon & S3C6400_UCON_CLKMASK;
+ u32 new_ucon;
+ u32 delta;
+
+ /* S3C64XX UART blocks only support level interrupts, so ensure that
+ * when we restore unused UART blocks we force the level interrupt
+ * settigs. */
+ save->ucon |= S3C2410_UCON_TXILEVEL | S3C2410_UCON_RXILEVEL;
+
+ /* We have a constraint on changing the clock type of the UART
+ * between UCLKx and PCLK, so ensure that when we restore UCON
+ * that the CLK field is correctly modified if the bootloader
+ * has changed anything.
+ */
+ if (ucon_clk != save_clk) {
+ new_ucon = save->ucon;
+ delta = ucon_clk ^ save_clk;
+
+ /* change from UCLKx => wrong PCLK,
+ * either UCLK can be tested for by a bit-test
+ * with UCLK0 */
+ if (ucon_clk & S3C6400_UCON_UCLK0 &&
+ !(save_clk & S3C6400_UCON_UCLK0) &&
+ delta & S3C6400_UCON_PCLK2) {
+ new_ucon &= ~S3C6400_UCON_UCLK0;
+ } else if (delta == S3C6400_UCON_PCLK2) {
+ /* as an precaution, don't change from
+ * PCLK2 => PCLK or vice-versa */
+ new_ucon ^= S3C6400_UCON_PCLK2;
+ }
+
+ S3C_PMDBG("ucon change %04x => %04x (save=%04x)\n",
+ ucon, new_ucon, save->ucon);
+ save->ucon = new_ucon;
+ }
+}
diff --git a/arch/arm/plat-s3c64xx/include/plat/regs-clock.h b/arch/arm/plat-s3c64xx/include/plat/regs-clock.h
index b1082c163247..52836d41e333 100644
--- a/arch/arm/plat-s3c64xx/include/plat/regs-clock.h
+++ b/arch/arm/plat-s3c64xx/include/plat/regs-clock.h
@@ -32,6 +32,7 @@
#define S3C_HCLK_GATE S3C_CLKREG(0x30)
#define S3C_PCLK_GATE S3C_CLKREG(0x34)
#define S3C_SCLK_GATE S3C_CLKREG(0x38)
+#define S3C_MEM0_GATE S3C_CLKREG(0x3C)
/* CLKDIV0 */
#define S3C6400_CLKDIV0_MFC_MASK (0xf << 28)
diff --git a/arch/arm/plat-s3c64xx/include/plat/s3c6400.h b/arch/arm/plat-s3c64xx/include/plat/s3c6400.h
index 571eaa2e54f1..11f2e1e119b0 100644
--- a/arch/arm/plat-s3c64xx/include/plat/s3c6400.h
+++ b/arch/arm/plat-s3c64xx/include/plat/s3c6400.h
@@ -15,12 +15,13 @@
/* Common init code for S3C6400 related SoCs */
extern void s3c6400_common_init_uarts(struct s3c2410_uartcfg *cfg, int no);
-extern void s3c6400_register_clocks(void);
+extern void s3c6400_register_clocks(unsigned armclk_divlimit);
extern void s3c6400_setup_clocks(void);
#ifdef CONFIG_CPU_S3C6400
extern int s3c6400_init(void);
+extern void s3c6400_init_irq(void);
extern void s3c6400_map_io(void);
extern void s3c6400_init_clocks(int xtal);