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@@ -11,40 +11,93 @@
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* GNU General Public License for more details.
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- *
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- * You should have received a copy of the GNU General Public License
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- * along with this program; if not, write to the Free Software
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- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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*/
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+#include <linux/clk.h>
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+#include <linux/clockchips.h>
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+#include <linux/clocksource.h>
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+#include <linux/delay.h>
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+#include <linux/err.h>
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#include <linux/init.h>
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#include <linux/init.h>
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-#include <linux/platform_device.h>
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-#include <linux/spinlock.h>
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#include <linux/interrupt.h>
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#include <linux/interrupt.h>
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-#include <linux/ioport.h>
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#include <linux/io.h>
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#include <linux/io.h>
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-#include <linux/clk.h>
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+#include <linux/ioport.h>
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#include <linux/irq.h>
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#include <linux/irq.h>
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-#include <linux/err.h>
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-#include <linux/delay.h>
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-#include <linux/clocksource.h>
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-#include <linux/clockchips.h>
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-#include <linux/sh_timer.h>
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-#include <linux/slab.h>
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#include <linux/module.h>
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#include <linux/module.h>
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+#include <linux/platform_device.h>
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#include <linux/pm_domain.h>
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#include <linux/pm_domain.h>
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#include <linux/pm_runtime.h>
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#include <linux/pm_runtime.h>
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+#include <linux/sh_timer.h>
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+#include <linux/slab.h>
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+#include <linux/spinlock.h>
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+
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+struct sh_cmt_device;
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+
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+/*
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+ * The CMT comes in 5 different identified flavours, depending not only on the
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+ * SoC but also on the particular instance. The following table lists the main
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+ * characteristics of those flavours.
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+ *
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+ * 16B 32B 32B-F 48B 48B-2
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+ * -----------------------------------------------------------------------------
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+ * Channels 2 1/4 1 6 2/8
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+ * Control Width 16 16 16 16 32
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+ * Counter Width 16 32 32 32/48 32/48
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+ * Shared Start/Stop Y Y Y Y N
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+ *
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+ * The 48-bit gen2 version has a per-channel start/stop register located in the
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+ * channel registers block. All other versions have a shared start/stop register
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+ * located in the global space.
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+ *
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+ * Channels are indexed from 0 to N-1 in the documentation. The channel index
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+ * infers the start/stop bit position in the control register and the channel
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+ * registers block address. Some CMT instances have a subset of channels
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+ * available, in which case the index in the documentation doesn't match the
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+ * "real" index as implemented in hardware. This is for instance the case with
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+ * CMT0 on r8a7740, which is a 32-bit variant with a single channel numbered 0
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+ * in the documentation but using start/stop bit 5 and having its registers
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+ * block at 0x60.
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+ *
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+ * Similarly CMT0 on r8a73a4, r8a7790 and r8a7791, while implementing 32-bit
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+ * channels only, is a 48-bit gen2 CMT with the 48-bit channels unavailable.
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+ */
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+
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+enum sh_cmt_model {
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+ SH_CMT_16BIT,
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+ SH_CMT_32BIT,
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+ SH_CMT_32BIT_FAST,
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+ SH_CMT_48BIT,
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+ SH_CMT_48BIT_GEN2,
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+};
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+
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+struct sh_cmt_info {
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+ enum sh_cmt_model model;
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-struct sh_cmt_priv {
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- void __iomem *mapbase;
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- void __iomem *mapbase_str;
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- struct clk *clk;
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unsigned long width; /* 16 or 32 bit version of hardware block */
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unsigned long width; /* 16 or 32 bit version of hardware block */
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unsigned long overflow_bit;
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unsigned long overflow_bit;
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unsigned long clear_bits;
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unsigned long clear_bits;
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- struct irqaction irqaction;
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- struct platform_device *pdev;
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+ /* callbacks for CMSTR and CMCSR access */
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+ unsigned long (*read_control)(void __iomem *base, unsigned long offs);
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+ void (*write_control)(void __iomem *base, unsigned long offs,
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+ unsigned long value);
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+
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+ /* callbacks for CMCNT and CMCOR access */
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+ unsigned long (*read_count)(void __iomem *base, unsigned long offs);
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+ void (*write_count)(void __iomem *base, unsigned long offs,
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+ unsigned long value);
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+};
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+
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+struct sh_cmt_channel {
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+ struct sh_cmt_device *cmt;
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+
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+ unsigned int index; /* Index in the documentation */
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+ unsigned int hwidx; /* Real hardware index */
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+
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+ void __iomem *iostart;
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+ void __iomem *ioctrl;
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+
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+ unsigned int timer_bit;
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unsigned long flags;
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unsigned long flags;
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unsigned long match_value;
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unsigned long match_value;
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unsigned long next_match_value;
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unsigned long next_match_value;
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@@ -55,38 +108,52 @@ struct sh_cmt_priv {
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struct clocksource cs;
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struct clocksource cs;
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unsigned long total_cycles;
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unsigned long total_cycles;
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bool cs_enabled;
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bool cs_enabled;
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+};
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- /* callbacks for CMSTR and CMCSR access */
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- unsigned long (*read_control)(void __iomem *base, unsigned long offs);
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- void (*write_control)(void __iomem *base, unsigned long offs,
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- unsigned long value);
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+struct sh_cmt_device {
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+ struct platform_device *pdev;
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- /* callbacks for CMCNT and CMCOR access */
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- unsigned long (*read_count)(void __iomem *base, unsigned long offs);
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- void (*write_count)(void __iomem *base, unsigned long offs,
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- unsigned long value);
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+ const struct sh_cmt_info *info;
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+ bool legacy;
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+
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+ void __iomem *mapbase_ch;
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+ void __iomem *mapbase;
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+ struct clk *clk;
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+
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+ struct sh_cmt_channel *channels;
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+ unsigned int num_channels;
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+
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+ bool has_clockevent;
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+ bool has_clocksource;
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};
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};
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-/* Examples of supported CMT timer register layouts and I/O access widths:
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- *
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- * "16-bit counter and 16-bit control" as found on sh7263:
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- * CMSTR 0xfffec000 16-bit
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- * CMCSR 0xfffec002 16-bit
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- * CMCNT 0xfffec004 16-bit
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- * CMCOR 0xfffec006 16-bit
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- *
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- * "32-bit counter and 16-bit control" as found on sh7372, sh73a0, r8a7740:
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- * CMSTR 0xffca0000 16-bit
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- * CMCSR 0xffca0060 16-bit
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- * CMCNT 0xffca0064 32-bit
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- * CMCOR 0xffca0068 32-bit
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- *
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- * "32-bit counter and 32-bit control" as found on r8a73a4 and r8a7790:
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- * CMSTR 0xffca0500 32-bit
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- * CMCSR 0xffca0510 32-bit
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- * CMCNT 0xffca0514 32-bit
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- * CMCOR 0xffca0518 32-bit
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- */
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+#define SH_CMT16_CMCSR_CMF (1 << 7)
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+#define SH_CMT16_CMCSR_CMIE (1 << 6)
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+#define SH_CMT16_CMCSR_CKS8 (0 << 0)
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+#define SH_CMT16_CMCSR_CKS32 (1 << 0)
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+#define SH_CMT16_CMCSR_CKS128 (2 << 0)
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+#define SH_CMT16_CMCSR_CKS512 (3 << 0)
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+#define SH_CMT16_CMCSR_CKS_MASK (3 << 0)
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+
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+#define SH_CMT32_CMCSR_CMF (1 << 15)
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+#define SH_CMT32_CMCSR_OVF (1 << 14)
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+#define SH_CMT32_CMCSR_WRFLG (1 << 13)
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+#define SH_CMT32_CMCSR_STTF (1 << 12)
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+#define SH_CMT32_CMCSR_STPF (1 << 11)
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+#define SH_CMT32_CMCSR_SSIE (1 << 10)
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+#define SH_CMT32_CMCSR_CMS (1 << 9)
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+#define SH_CMT32_CMCSR_CMM (1 << 8)
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+#define SH_CMT32_CMCSR_CMTOUT_IE (1 << 7)
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+#define SH_CMT32_CMCSR_CMR_NONE (0 << 4)
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+#define SH_CMT32_CMCSR_CMR_DMA (1 << 4)
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+#define SH_CMT32_CMCSR_CMR_IRQ (2 << 4)
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+#define SH_CMT32_CMCSR_CMR_MASK (3 << 4)
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+#define SH_CMT32_CMCSR_DBGIVD (1 << 3)
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+#define SH_CMT32_CMCSR_CKS_RCLK8 (4 << 0)
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+#define SH_CMT32_CMCSR_CKS_RCLK32 (5 << 0)
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+#define SH_CMT32_CMCSR_CKS_RCLK128 (6 << 0)
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+#define SH_CMT32_CMCSR_CKS_RCLK1 (7 << 0)
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+#define SH_CMT32_CMCSR_CKS_MASK (7 << 0)
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static unsigned long sh_cmt_read16(void __iomem *base, unsigned long offs)
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static unsigned long sh_cmt_read16(void __iomem *base, unsigned long offs)
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{
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{
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@@ -110,64 +177,123 @@ static void sh_cmt_write32(void __iomem *base, unsigned long offs,
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iowrite32(value, base + (offs << 2));
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iowrite32(value, base + (offs << 2));
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}
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}
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+static const struct sh_cmt_info sh_cmt_info[] = {
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+ [SH_CMT_16BIT] = {
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+ .model = SH_CMT_16BIT,
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+ .width = 16,
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+ .overflow_bit = SH_CMT16_CMCSR_CMF,
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+ .clear_bits = ~SH_CMT16_CMCSR_CMF,
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+ .read_control = sh_cmt_read16,
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+ .write_control = sh_cmt_write16,
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+ .read_count = sh_cmt_read16,
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+ .write_count = sh_cmt_write16,
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+ },
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+ [SH_CMT_32BIT] = {
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+ .model = SH_CMT_32BIT,
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+ .width = 32,
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+ .overflow_bit = SH_CMT32_CMCSR_CMF,
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+ .clear_bits = ~(SH_CMT32_CMCSR_CMF | SH_CMT32_CMCSR_OVF),
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+ .read_control = sh_cmt_read16,
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+ .write_control = sh_cmt_write16,
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+ .read_count = sh_cmt_read32,
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+ .write_count = sh_cmt_write32,
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+ },
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+ [SH_CMT_32BIT_FAST] = {
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+ .model = SH_CMT_32BIT_FAST,
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+ .width = 32,
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+ .overflow_bit = SH_CMT32_CMCSR_CMF,
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+ .clear_bits = ~(SH_CMT32_CMCSR_CMF | SH_CMT32_CMCSR_OVF),
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+ .read_control = sh_cmt_read16,
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+ .write_control = sh_cmt_write16,
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+ .read_count = sh_cmt_read32,
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+ .write_count = sh_cmt_write32,
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+ },
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+ [SH_CMT_48BIT] = {
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+ .model = SH_CMT_48BIT,
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+ .width = 32,
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+ .overflow_bit = SH_CMT32_CMCSR_CMF,
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+ .clear_bits = ~(SH_CMT32_CMCSR_CMF | SH_CMT32_CMCSR_OVF),
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+ .read_control = sh_cmt_read32,
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+ .write_control = sh_cmt_write32,
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+ .read_count = sh_cmt_read32,
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+ .write_count = sh_cmt_write32,
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+ },
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+ [SH_CMT_48BIT_GEN2] = {
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+ .model = SH_CMT_48BIT_GEN2,
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+ .width = 32,
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+ .overflow_bit = SH_CMT32_CMCSR_CMF,
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+ .clear_bits = ~(SH_CMT32_CMCSR_CMF | SH_CMT32_CMCSR_OVF),
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+ .read_control = sh_cmt_read32,
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+ .write_control = sh_cmt_write32,
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+ .read_count = sh_cmt_read32,
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+ .write_count = sh_cmt_write32,
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+ },
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+};
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+
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#define CMCSR 0 /* channel register */
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#define CMCSR 0 /* channel register */
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#define CMCNT 1 /* channel register */
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#define CMCNT 1 /* channel register */
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#define CMCOR 2 /* channel register */
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#define CMCOR 2 /* channel register */
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-static inline unsigned long sh_cmt_read_cmstr(struct sh_cmt_priv *p)
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+static inline unsigned long sh_cmt_read_cmstr(struct sh_cmt_channel *ch)
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{
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{
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- return p->read_control(p->mapbase_str, 0);
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+ if (ch->iostart)
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+ return ch->cmt->info->read_control(ch->iostart, 0);
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+ else
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+ return ch->cmt->info->read_control(ch->cmt->mapbase, 0);
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}
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}
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-static inline unsigned long sh_cmt_read_cmcsr(struct sh_cmt_priv *p)
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+static inline void sh_cmt_write_cmstr(struct sh_cmt_channel *ch,
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+ unsigned long value)
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{
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{
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- return p->read_control(p->mapbase, CMCSR);
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+ if (ch->iostart)
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+ ch->cmt->info->write_control(ch->iostart, 0, value);
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+ else
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+ ch->cmt->info->write_control(ch->cmt->mapbase, 0, value);
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}
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}
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-static inline unsigned long sh_cmt_read_cmcnt(struct sh_cmt_priv *p)
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+static inline unsigned long sh_cmt_read_cmcsr(struct sh_cmt_channel *ch)
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{
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{
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- return p->read_count(p->mapbase, CMCNT);
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+ return ch->cmt->info->read_control(ch->ioctrl, CMCSR);
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}
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}
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-static inline void sh_cmt_write_cmstr(struct sh_cmt_priv *p,
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+static inline void sh_cmt_write_cmcsr(struct sh_cmt_channel *ch,
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unsigned long value)
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unsigned long value)
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{
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{
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- p->write_control(p->mapbase_str, 0, value);
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+ ch->cmt->info->write_control(ch->ioctrl, CMCSR, value);
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}
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}
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-static inline void sh_cmt_write_cmcsr(struct sh_cmt_priv *p,
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- unsigned long value)
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+static inline unsigned long sh_cmt_read_cmcnt(struct sh_cmt_channel *ch)
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{
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{
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- p->write_control(p->mapbase, CMCSR, value);
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+ return ch->cmt->info->read_count(ch->ioctrl, CMCNT);
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}
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}
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-static inline void sh_cmt_write_cmcnt(struct sh_cmt_priv *p,
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+static inline void sh_cmt_write_cmcnt(struct sh_cmt_channel *ch,
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unsigned long value)
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unsigned long value)
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{
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{
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- p->write_count(p->mapbase, CMCNT, value);
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+ ch->cmt->info->write_count(ch->ioctrl, CMCNT, value);
|
|
}
|
|
}
|
|
|
|
|
|
-static inline void sh_cmt_write_cmcor(struct sh_cmt_priv *p,
|
|
|
|
|
|
+static inline void sh_cmt_write_cmcor(struct sh_cmt_channel *ch,
|
|
unsigned long value)
|
|
unsigned long value)
|
|
{
|
|
{
|
|
- p->write_count(p->mapbase, CMCOR, value);
|
|
|
|
|
|
+ ch->cmt->info->write_count(ch->ioctrl, CMCOR, value);
|
|
}
|
|
}
|
|
|
|
|
|
-static unsigned long sh_cmt_get_counter(struct sh_cmt_priv *p,
|
|
|
|
|
|
+static unsigned long sh_cmt_get_counter(struct sh_cmt_channel *ch,
|
|
int *has_wrapped)
|
|
int *has_wrapped)
|
|
{
|
|
{
|
|
unsigned long v1, v2, v3;
|
|
unsigned long v1, v2, v3;
|
|
int o1, o2;
|
|
int o1, o2;
|
|
|
|
|
|
- o1 = sh_cmt_read_cmcsr(p) & p->overflow_bit;
|
|
|
|
|
|
+ o1 = sh_cmt_read_cmcsr(ch) & ch->cmt->info->overflow_bit;
|
|
|
|
|
|
/* Make sure the timer value is stable. Stolen from acpi_pm.c */
|
|
/* Make sure the timer value is stable. Stolen from acpi_pm.c */
|
|
do {
|
|
do {
|
|
o2 = o1;
|
|
o2 = o1;
|
|
- v1 = sh_cmt_read_cmcnt(p);
|
|
|
|
- v2 = sh_cmt_read_cmcnt(p);
|
|
|
|
- v3 = sh_cmt_read_cmcnt(p);
|
|
|
|
- o1 = sh_cmt_read_cmcsr(p) & p->overflow_bit;
|
|
|
|
|
|
+ v1 = sh_cmt_read_cmcnt(ch);
|
|
|
|
+ v2 = sh_cmt_read_cmcnt(ch);
|
|
|
|
+ v3 = sh_cmt_read_cmcnt(ch);
|
|
|
|
+ o1 = sh_cmt_read_cmcsr(ch) & ch->cmt->info->overflow_bit;
|
|
} while (unlikely((o1 != o2) || (v1 > v2 && v1 < v3)
|
|
} while (unlikely((o1 != o2) || (v1 > v2 && v1 < v3)
|
|
|| (v2 > v3 && v2 < v1) || (v3 > v1 && v3 < v2)));
|
|
|| (v2 > v3 && v2 < v1) || (v3 > v1 && v3 < v2)));
|
|
|
|
|
|
@@ -177,52 +303,56 @@ static unsigned long sh_cmt_get_counter(struct sh_cmt_priv *p,
|
|
|
|
|
|
static DEFINE_RAW_SPINLOCK(sh_cmt_lock);
|
|
static DEFINE_RAW_SPINLOCK(sh_cmt_lock);
|
|
|
|
|
|
-static void sh_cmt_start_stop_ch(struct sh_cmt_priv *p, int start)
|
|
|
|
|
|
+static void sh_cmt_start_stop_ch(struct sh_cmt_channel *ch, int start)
|
|
{
|
|
{
|
|
- struct sh_timer_config *cfg = p->pdev->dev.platform_data;
|
|
|
|
unsigned long flags, value;
|
|
unsigned long flags, value;
|
|
|
|
|
|
/* start stop register shared by multiple timer channels */
|
|
/* start stop register shared by multiple timer channels */
|
|
raw_spin_lock_irqsave(&sh_cmt_lock, flags);
|
|
raw_spin_lock_irqsave(&sh_cmt_lock, flags);
|
|
- value = sh_cmt_read_cmstr(p);
|
|
|
|
|
|
+ value = sh_cmt_read_cmstr(ch);
|
|
|
|
|
|
if (start)
|
|
if (start)
|
|
- value |= 1 << cfg->timer_bit;
|
|
|
|
|
|
+ value |= 1 << ch->timer_bit;
|
|
else
|
|
else
|
|
- value &= ~(1 << cfg->timer_bit);
|
|
|
|
|
|
+ value &= ~(1 << ch->timer_bit);
|
|
|
|
|
|
- sh_cmt_write_cmstr(p, value);
|
|
|
|
|
|
+ sh_cmt_write_cmstr(ch, value);
|
|
raw_spin_unlock_irqrestore(&sh_cmt_lock, flags);
|
|
raw_spin_unlock_irqrestore(&sh_cmt_lock, flags);
|
|
}
|
|
}
|
|
|
|
|
|
-static int sh_cmt_enable(struct sh_cmt_priv *p, unsigned long *rate)
|
|
|
|
|
|
+static int sh_cmt_enable(struct sh_cmt_channel *ch, unsigned long *rate)
|
|
{
|
|
{
|
|
int k, ret;
|
|
int k, ret;
|
|
|
|
|
|
- pm_runtime_get_sync(&p->pdev->dev);
|
|
|
|
- dev_pm_syscore_device(&p->pdev->dev, true);
|
|
|
|
|
|
+ pm_runtime_get_sync(&ch->cmt->pdev->dev);
|
|
|
|
+ dev_pm_syscore_device(&ch->cmt->pdev->dev, true);
|
|
|
|
|
|
/* enable clock */
|
|
/* enable clock */
|
|
- ret = clk_enable(p->clk);
|
|
|
|
|
|
+ ret = clk_enable(ch->cmt->clk);
|
|
if (ret) {
|
|
if (ret) {
|
|
- dev_err(&p->pdev->dev, "cannot enable clock\n");
|
|
|
|
|
|
+ dev_err(&ch->cmt->pdev->dev, "ch%u: cannot enable clock\n",
|
|
|
|
+ ch->index);
|
|
goto err0;
|
|
goto err0;
|
|
}
|
|
}
|
|
|
|
|
|
/* make sure channel is disabled */
|
|
/* make sure channel is disabled */
|
|
- sh_cmt_start_stop_ch(p, 0);
|
|
|
|
|
|
+ sh_cmt_start_stop_ch(ch, 0);
|
|
|
|
|
|
/* configure channel, periodic mode and maximum timeout */
|
|
/* configure channel, periodic mode and maximum timeout */
|
|
- if (p->width == 16) {
|
|
|
|
- *rate = clk_get_rate(p->clk) / 512;
|
|
|
|
- sh_cmt_write_cmcsr(p, 0x43);
|
|
|
|
|
|
+ if (ch->cmt->info->width == 16) {
|
|
|
|
+ *rate = clk_get_rate(ch->cmt->clk) / 512;
|
|
|
|
+ sh_cmt_write_cmcsr(ch, SH_CMT16_CMCSR_CMIE |
|
|
|
|
+ SH_CMT16_CMCSR_CKS512);
|
|
} else {
|
|
} else {
|
|
- *rate = clk_get_rate(p->clk) / 8;
|
|
|
|
- sh_cmt_write_cmcsr(p, 0x01a4);
|
|
|
|
|
|
+ *rate = clk_get_rate(ch->cmt->clk) / 8;
|
|
|
|
+ sh_cmt_write_cmcsr(ch, SH_CMT32_CMCSR_CMM |
|
|
|
|
+ SH_CMT32_CMCSR_CMTOUT_IE |
|
|
|
|
+ SH_CMT32_CMCSR_CMR_IRQ |
|
|
|
|
+ SH_CMT32_CMCSR_CKS_RCLK8);
|
|
}
|
|
}
|
|
|
|
|
|
- sh_cmt_write_cmcor(p, 0xffffffff);
|
|
|
|
- sh_cmt_write_cmcnt(p, 0);
|
|
|
|
|
|
+ sh_cmt_write_cmcor(ch, 0xffffffff);
|
|
|
|
+ sh_cmt_write_cmcnt(ch, 0);
|
|
|
|
|
|
/*
|
|
/*
|
|
* According to the sh73a0 user's manual, as CMCNT can be operated
|
|
* According to the sh73a0 user's manual, as CMCNT can be operated
|
|
@@ -236,41 +366,42 @@ static int sh_cmt_enable(struct sh_cmt_priv *p, unsigned long *rate)
|
|
* take RCLKx2 at maximum.
|
|
* take RCLKx2 at maximum.
|
|
*/
|
|
*/
|
|
for (k = 0; k < 100; k++) {
|
|
for (k = 0; k < 100; k++) {
|
|
- if (!sh_cmt_read_cmcnt(p))
|
|
|
|
|
|
+ if (!sh_cmt_read_cmcnt(ch))
|
|
break;
|
|
break;
|
|
udelay(1);
|
|
udelay(1);
|
|
}
|
|
}
|
|
|
|
|
|
- if (sh_cmt_read_cmcnt(p)) {
|
|
|
|
- dev_err(&p->pdev->dev, "cannot clear CMCNT\n");
|
|
|
|
|
|
+ if (sh_cmt_read_cmcnt(ch)) {
|
|
|
|
+ dev_err(&ch->cmt->pdev->dev, "ch%u: cannot clear CMCNT\n",
|
|
|
|
+ ch->index);
|
|
ret = -ETIMEDOUT;
|
|
ret = -ETIMEDOUT;
|
|
goto err1;
|
|
goto err1;
|
|
}
|
|
}
|
|
|
|
|
|
/* enable channel */
|
|
/* enable channel */
|
|
- sh_cmt_start_stop_ch(p, 1);
|
|
|
|
|
|
+ sh_cmt_start_stop_ch(ch, 1);
|
|
return 0;
|
|
return 0;
|
|
err1:
|
|
err1:
|
|
/* stop clock */
|
|
/* stop clock */
|
|
- clk_disable(p->clk);
|
|
|
|
|
|
+ clk_disable(ch->cmt->clk);
|
|
|
|
|
|
err0:
|
|
err0:
|
|
return ret;
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
|
|
-static void sh_cmt_disable(struct sh_cmt_priv *p)
|
|
|
|
|
|
+static void sh_cmt_disable(struct sh_cmt_channel *ch)
|
|
{
|
|
{
|
|
/* disable channel */
|
|
/* disable channel */
|
|
- sh_cmt_start_stop_ch(p, 0);
|
|
|
|
|
|
+ sh_cmt_start_stop_ch(ch, 0);
|
|
|
|
|
|
/* disable interrupts in CMT block */
|
|
/* disable interrupts in CMT block */
|
|
- sh_cmt_write_cmcsr(p, 0);
|
|
|
|
|
|
+ sh_cmt_write_cmcsr(ch, 0);
|
|
|
|
|
|
/* stop clock */
|
|
/* stop clock */
|
|
- clk_disable(p->clk);
|
|
|
|
|
|
+ clk_disable(ch->cmt->clk);
|
|
|
|
|
|
- dev_pm_syscore_device(&p->pdev->dev, false);
|
|
|
|
- pm_runtime_put(&p->pdev->dev);
|
|
|
|
|
|
+ dev_pm_syscore_device(&ch->cmt->pdev->dev, false);
|
|
|
|
+ pm_runtime_put(&ch->cmt->pdev->dev);
|
|
}
|
|
}
|
|
|
|
|
|
/* private flags */
|
|
/* private flags */
|
|
@@ -280,24 +411,24 @@ static void sh_cmt_disable(struct sh_cmt_priv *p)
|
|
#define FLAG_SKIPEVENT (1 << 3)
|
|
#define FLAG_SKIPEVENT (1 << 3)
|
|
#define FLAG_IRQCONTEXT (1 << 4)
|
|
#define FLAG_IRQCONTEXT (1 << 4)
|
|
|
|
|
|
-static void sh_cmt_clock_event_program_verify(struct sh_cmt_priv *p,
|
|
|
|
|
|
+static void sh_cmt_clock_event_program_verify(struct sh_cmt_channel *ch,
|
|
int absolute)
|
|
int absolute)
|
|
{
|
|
{
|
|
unsigned long new_match;
|
|
unsigned long new_match;
|
|
- unsigned long value = p->next_match_value;
|
|
|
|
|
|
+ unsigned long value = ch->next_match_value;
|
|
unsigned long delay = 0;
|
|
unsigned long delay = 0;
|
|
unsigned long now = 0;
|
|
unsigned long now = 0;
|
|
int has_wrapped;
|
|
int has_wrapped;
|
|
|
|
|
|
- now = sh_cmt_get_counter(p, &has_wrapped);
|
|
|
|
- p->flags |= FLAG_REPROGRAM; /* force reprogram */
|
|
|
|
|
|
+ now = sh_cmt_get_counter(ch, &has_wrapped);
|
|
|
|
+ ch->flags |= FLAG_REPROGRAM; /* force reprogram */
|
|
|
|
|
|
if (has_wrapped) {
|
|
if (has_wrapped) {
|
|
/* we're competing with the interrupt handler.
|
|
/* we're competing with the interrupt handler.
|
|
* -> let the interrupt handler reprogram the timer.
|
|
* -> let the interrupt handler reprogram the timer.
|
|
* -> interrupt number two handles the event.
|
|
* -> interrupt number two handles the event.
|
|
*/
|
|
*/
|
|
- p->flags |= FLAG_SKIPEVENT;
|
|
|
|
|
|
+ ch->flags |= FLAG_SKIPEVENT;
|
|
return;
|
|
return;
|
|
}
|
|
}
|
|
|
|
|
|
@@ -309,20 +440,20 @@ static void sh_cmt_clock_event_program_verify(struct sh_cmt_priv *p,
|
|
* but don't save the new match value yet.
|
|
* but don't save the new match value yet.
|
|
*/
|
|
*/
|
|
new_match = now + value + delay;
|
|
new_match = now + value + delay;
|
|
- if (new_match > p->max_match_value)
|
|
|
|
- new_match = p->max_match_value;
|
|
|
|
|
|
+ if (new_match > ch->max_match_value)
|
|
|
|
+ new_match = ch->max_match_value;
|
|
|
|
|
|
- sh_cmt_write_cmcor(p, new_match);
|
|
|
|
|
|
+ sh_cmt_write_cmcor(ch, new_match);
|
|
|
|
|
|
- now = sh_cmt_get_counter(p, &has_wrapped);
|
|
|
|
- if (has_wrapped && (new_match > p->match_value)) {
|
|
|
|
|
|
+ now = sh_cmt_get_counter(ch, &has_wrapped);
|
|
|
|
+ if (has_wrapped && (new_match > ch->match_value)) {
|
|
/* we are changing to a greater match value,
|
|
/* we are changing to a greater match value,
|
|
* so this wrap must be caused by the counter
|
|
* so this wrap must be caused by the counter
|
|
* matching the old value.
|
|
* matching the old value.
|
|
* -> first interrupt reprograms the timer.
|
|
* -> first interrupt reprograms the timer.
|
|
* -> interrupt number two handles the event.
|
|
* -> interrupt number two handles the event.
|
|
*/
|
|
*/
|
|
- p->flags |= FLAG_SKIPEVENT;
|
|
|
|
|
|
+ ch->flags |= FLAG_SKIPEVENT;
|
|
break;
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
@@ -333,7 +464,7 @@ static void sh_cmt_clock_event_program_verify(struct sh_cmt_priv *p,
|
|
* -> save programmed match value.
|
|
* -> save programmed match value.
|
|
* -> let isr handle the event.
|
|
* -> let isr handle the event.
|
|
*/
|
|
*/
|
|
- p->match_value = new_match;
|
|
|
|
|
|
+ ch->match_value = new_match;
|
|
break;
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
@@ -344,7 +475,7 @@ static void sh_cmt_clock_event_program_verify(struct sh_cmt_priv *p,
|
|
* -> save programmed match value.
|
|
* -> save programmed match value.
|
|
* -> let isr handle the event.
|
|
* -> let isr handle the event.
|
|
*/
|
|
*/
|
|
- p->match_value = new_match;
|
|
|
|
|
|
+ ch->match_value = new_match;
|
|
break;
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
@@ -360,138 +491,141 @@ static void sh_cmt_clock_event_program_verify(struct sh_cmt_priv *p,
|
|
delay = 1;
|
|
delay = 1;
|
|
|
|
|
|
if (!delay)
|
|
if (!delay)
|
|
- dev_warn(&p->pdev->dev, "too long delay\n");
|
|
|
|
|
|
+ dev_warn(&ch->cmt->pdev->dev, "ch%u: too long delay\n",
|
|
|
|
+ ch->index);
|
|
|
|
|
|
} while (delay);
|
|
} while (delay);
|
|
}
|
|
}
|
|
|
|
|
|
-static void __sh_cmt_set_next(struct sh_cmt_priv *p, unsigned long delta)
|
|
|
|
|
|
+static void __sh_cmt_set_next(struct sh_cmt_channel *ch, unsigned long delta)
|
|
{
|
|
{
|
|
- if (delta > p->max_match_value)
|
|
|
|
- dev_warn(&p->pdev->dev, "delta out of range\n");
|
|
|
|
|
|
+ if (delta > ch->max_match_value)
|
|
|
|
+ dev_warn(&ch->cmt->pdev->dev, "ch%u: delta out of range\n",
|
|
|
|
+ ch->index);
|
|
|
|
|
|
- p->next_match_value = delta;
|
|
|
|
- sh_cmt_clock_event_program_verify(p, 0);
|
|
|
|
|
|
+ ch->next_match_value = delta;
|
|
|
|
+ sh_cmt_clock_event_program_verify(ch, 0);
|
|
}
|
|
}
|
|
|
|
|
|
-static void sh_cmt_set_next(struct sh_cmt_priv *p, unsigned long delta)
|
|
|
|
|
|
+static void sh_cmt_set_next(struct sh_cmt_channel *ch, unsigned long delta)
|
|
{
|
|
{
|
|
unsigned long flags;
|
|
unsigned long flags;
|
|
|
|
|
|
- raw_spin_lock_irqsave(&p->lock, flags);
|
|
|
|
- __sh_cmt_set_next(p, delta);
|
|
|
|
- raw_spin_unlock_irqrestore(&p->lock, flags);
|
|
|
|
|
|
+ raw_spin_lock_irqsave(&ch->lock, flags);
|
|
|
|
+ __sh_cmt_set_next(ch, delta);
|
|
|
|
+ raw_spin_unlock_irqrestore(&ch->lock, flags);
|
|
}
|
|
}
|
|
|
|
|
|
static irqreturn_t sh_cmt_interrupt(int irq, void *dev_id)
|
|
static irqreturn_t sh_cmt_interrupt(int irq, void *dev_id)
|
|
{
|
|
{
|
|
- struct sh_cmt_priv *p = dev_id;
|
|
|
|
|
|
+ struct sh_cmt_channel *ch = dev_id;
|
|
|
|
|
|
/* clear flags */
|
|
/* clear flags */
|
|
- sh_cmt_write_cmcsr(p, sh_cmt_read_cmcsr(p) & p->clear_bits);
|
|
|
|
|
|
+ sh_cmt_write_cmcsr(ch, sh_cmt_read_cmcsr(ch) &
|
|
|
|
+ ch->cmt->info->clear_bits);
|
|
|
|
|
|
/* update clock source counter to begin with if enabled
|
|
/* update clock source counter to begin with if enabled
|
|
* the wrap flag should be cleared by the timer specific
|
|
* the wrap flag should be cleared by the timer specific
|
|
* isr before we end up here.
|
|
* isr before we end up here.
|
|
*/
|
|
*/
|
|
- if (p->flags & FLAG_CLOCKSOURCE)
|
|
|
|
- p->total_cycles += p->match_value + 1;
|
|
|
|
|
|
+ if (ch->flags & FLAG_CLOCKSOURCE)
|
|
|
|
+ ch->total_cycles += ch->match_value + 1;
|
|
|
|
|
|
- if (!(p->flags & FLAG_REPROGRAM))
|
|
|
|
- p->next_match_value = p->max_match_value;
|
|
|
|
|
|
+ if (!(ch->flags & FLAG_REPROGRAM))
|
|
|
|
+ ch->next_match_value = ch->max_match_value;
|
|
|
|
|
|
- p->flags |= FLAG_IRQCONTEXT;
|
|
|
|
|
|
+ ch->flags |= FLAG_IRQCONTEXT;
|
|
|
|
|
|
- if (p->flags & FLAG_CLOCKEVENT) {
|
|
|
|
- if (!(p->flags & FLAG_SKIPEVENT)) {
|
|
|
|
- if (p->ced.mode == CLOCK_EVT_MODE_ONESHOT) {
|
|
|
|
- p->next_match_value = p->max_match_value;
|
|
|
|
- p->flags |= FLAG_REPROGRAM;
|
|
|
|
|
|
+ if (ch->flags & FLAG_CLOCKEVENT) {
|
|
|
|
+ if (!(ch->flags & FLAG_SKIPEVENT)) {
|
|
|
|
+ if (ch->ced.mode == CLOCK_EVT_MODE_ONESHOT) {
|
|
|
|
+ ch->next_match_value = ch->max_match_value;
|
|
|
|
+ ch->flags |= FLAG_REPROGRAM;
|
|
}
|
|
}
|
|
|
|
|
|
- p->ced.event_handler(&p->ced);
|
|
|
|
|
|
+ ch->ced.event_handler(&ch->ced);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
- p->flags &= ~FLAG_SKIPEVENT;
|
|
|
|
|
|
+ ch->flags &= ~FLAG_SKIPEVENT;
|
|
|
|
|
|
- if (p->flags & FLAG_REPROGRAM) {
|
|
|
|
- p->flags &= ~FLAG_REPROGRAM;
|
|
|
|
- sh_cmt_clock_event_program_verify(p, 1);
|
|
|
|
|
|
+ if (ch->flags & FLAG_REPROGRAM) {
|
|
|
|
+ ch->flags &= ~FLAG_REPROGRAM;
|
|
|
|
+ sh_cmt_clock_event_program_verify(ch, 1);
|
|
|
|
|
|
- if (p->flags & FLAG_CLOCKEVENT)
|
|
|
|
- if ((p->ced.mode == CLOCK_EVT_MODE_SHUTDOWN)
|
|
|
|
- || (p->match_value == p->next_match_value))
|
|
|
|
- p->flags &= ~FLAG_REPROGRAM;
|
|
|
|
|
|
+ if (ch->flags & FLAG_CLOCKEVENT)
|
|
|
|
+ if ((ch->ced.mode == CLOCK_EVT_MODE_SHUTDOWN)
|
|
|
|
+ || (ch->match_value == ch->next_match_value))
|
|
|
|
+ ch->flags &= ~FLAG_REPROGRAM;
|
|
}
|
|
}
|
|
|
|
|
|
- p->flags &= ~FLAG_IRQCONTEXT;
|
|
|
|
|
|
+ ch->flags &= ~FLAG_IRQCONTEXT;
|
|
|
|
|
|
return IRQ_HANDLED;
|
|
return IRQ_HANDLED;
|
|
}
|
|
}
|
|
|
|
|
|
-static int sh_cmt_start(struct sh_cmt_priv *p, unsigned long flag)
|
|
|
|
|
|
+static int sh_cmt_start(struct sh_cmt_channel *ch, unsigned long flag)
|
|
{
|
|
{
|
|
int ret = 0;
|
|
int ret = 0;
|
|
unsigned long flags;
|
|
unsigned long flags;
|
|
|
|
|
|
- raw_spin_lock_irqsave(&p->lock, flags);
|
|
|
|
|
|
+ raw_spin_lock_irqsave(&ch->lock, flags);
|
|
|
|
|
|
- if (!(p->flags & (FLAG_CLOCKEVENT | FLAG_CLOCKSOURCE)))
|
|
|
|
- ret = sh_cmt_enable(p, &p->rate);
|
|
|
|
|
|
+ if (!(ch->flags & (FLAG_CLOCKEVENT | FLAG_CLOCKSOURCE)))
|
|
|
|
+ ret = sh_cmt_enable(ch, &ch->rate);
|
|
|
|
|
|
if (ret)
|
|
if (ret)
|
|
goto out;
|
|
goto out;
|
|
- p->flags |= flag;
|
|
|
|
|
|
+ ch->flags |= flag;
|
|
|
|
|
|
/* setup timeout if no clockevent */
|
|
/* setup timeout if no clockevent */
|
|
- if ((flag == FLAG_CLOCKSOURCE) && (!(p->flags & FLAG_CLOCKEVENT)))
|
|
|
|
- __sh_cmt_set_next(p, p->max_match_value);
|
|
|
|
|
|
+ if ((flag == FLAG_CLOCKSOURCE) && (!(ch->flags & FLAG_CLOCKEVENT)))
|
|
|
|
+ __sh_cmt_set_next(ch, ch->max_match_value);
|
|
out:
|
|
out:
|
|
- raw_spin_unlock_irqrestore(&p->lock, flags);
|
|
|
|
|
|
+ raw_spin_unlock_irqrestore(&ch->lock, flags);
|
|
|
|
|
|
return ret;
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
|
|
-static void sh_cmt_stop(struct sh_cmt_priv *p, unsigned long flag)
|
|
|
|
|
|
+static void sh_cmt_stop(struct sh_cmt_channel *ch, unsigned long flag)
|
|
{
|
|
{
|
|
unsigned long flags;
|
|
unsigned long flags;
|
|
unsigned long f;
|
|
unsigned long f;
|
|
|
|
|
|
- raw_spin_lock_irqsave(&p->lock, flags);
|
|
|
|
|
|
+ raw_spin_lock_irqsave(&ch->lock, flags);
|
|
|
|
|
|
- f = p->flags & (FLAG_CLOCKEVENT | FLAG_CLOCKSOURCE);
|
|
|
|
- p->flags &= ~flag;
|
|
|
|
|
|
+ f = ch->flags & (FLAG_CLOCKEVENT | FLAG_CLOCKSOURCE);
|
|
|
|
+ ch->flags &= ~flag;
|
|
|
|
|
|
- if (f && !(p->flags & (FLAG_CLOCKEVENT | FLAG_CLOCKSOURCE)))
|
|
|
|
- sh_cmt_disable(p);
|
|
|
|
|
|
+ if (f && !(ch->flags & (FLAG_CLOCKEVENT | FLAG_CLOCKSOURCE)))
|
|
|
|
+ sh_cmt_disable(ch);
|
|
|
|
|
|
/* adjust the timeout to maximum if only clocksource left */
|
|
/* adjust the timeout to maximum if only clocksource left */
|
|
- if ((flag == FLAG_CLOCKEVENT) && (p->flags & FLAG_CLOCKSOURCE))
|
|
|
|
- __sh_cmt_set_next(p, p->max_match_value);
|
|
|
|
|
|
+ if ((flag == FLAG_CLOCKEVENT) && (ch->flags & FLAG_CLOCKSOURCE))
|
|
|
|
+ __sh_cmt_set_next(ch, ch->max_match_value);
|
|
|
|
|
|
- raw_spin_unlock_irqrestore(&p->lock, flags);
|
|
|
|
|
|
+ raw_spin_unlock_irqrestore(&ch->lock, flags);
|
|
}
|
|
}
|
|
|
|
|
|
-static struct sh_cmt_priv *cs_to_sh_cmt(struct clocksource *cs)
|
|
|
|
|
|
+static struct sh_cmt_channel *cs_to_sh_cmt(struct clocksource *cs)
|
|
{
|
|
{
|
|
- return container_of(cs, struct sh_cmt_priv, cs);
|
|
|
|
|
|
+ return container_of(cs, struct sh_cmt_channel, cs);
|
|
}
|
|
}
|
|
|
|
|
|
static cycle_t sh_cmt_clocksource_read(struct clocksource *cs)
|
|
static cycle_t sh_cmt_clocksource_read(struct clocksource *cs)
|
|
{
|
|
{
|
|
- struct sh_cmt_priv *p = cs_to_sh_cmt(cs);
|
|
|
|
|
|
+ struct sh_cmt_channel *ch = cs_to_sh_cmt(cs);
|
|
unsigned long flags, raw;
|
|
unsigned long flags, raw;
|
|
unsigned long value;
|
|
unsigned long value;
|
|
int has_wrapped;
|
|
int has_wrapped;
|
|
|
|
|
|
- raw_spin_lock_irqsave(&p->lock, flags);
|
|
|
|
- value = p->total_cycles;
|
|
|
|
- raw = sh_cmt_get_counter(p, &has_wrapped);
|
|
|
|
|
|
+ raw_spin_lock_irqsave(&ch->lock, flags);
|
|
|
|
+ value = ch->total_cycles;
|
|
|
|
+ raw = sh_cmt_get_counter(ch, &has_wrapped);
|
|
|
|
|
|
if (unlikely(has_wrapped))
|
|
if (unlikely(has_wrapped))
|
|
- raw += p->match_value + 1;
|
|
|
|
- raw_spin_unlock_irqrestore(&p->lock, flags);
|
|
|
|
|
|
+ raw += ch->match_value + 1;
|
|
|
|
+ raw_spin_unlock_irqrestore(&ch->lock, flags);
|
|
|
|
|
|
return value + raw;
|
|
return value + raw;
|
|
}
|
|
}
|
|
@@ -499,53 +633,53 @@ static cycle_t sh_cmt_clocksource_read(struct clocksource *cs)
|
|
static int sh_cmt_clocksource_enable(struct clocksource *cs)
|
|
static int sh_cmt_clocksource_enable(struct clocksource *cs)
|
|
{
|
|
{
|
|
int ret;
|
|
int ret;
|
|
- struct sh_cmt_priv *p = cs_to_sh_cmt(cs);
|
|
|
|
|
|
+ struct sh_cmt_channel *ch = cs_to_sh_cmt(cs);
|
|
|
|
|
|
- WARN_ON(p->cs_enabled);
|
|
|
|
|
|
+ WARN_ON(ch->cs_enabled);
|
|
|
|
|
|
- p->total_cycles = 0;
|
|
|
|
|
|
+ ch->total_cycles = 0;
|
|
|
|
|
|
- ret = sh_cmt_start(p, FLAG_CLOCKSOURCE);
|
|
|
|
|
|
+ ret = sh_cmt_start(ch, FLAG_CLOCKSOURCE);
|
|
if (!ret) {
|
|
if (!ret) {
|
|
- __clocksource_updatefreq_hz(cs, p->rate);
|
|
|
|
- p->cs_enabled = true;
|
|
|
|
|
|
+ __clocksource_updatefreq_hz(cs, ch->rate);
|
|
|
|
+ ch->cs_enabled = true;
|
|
}
|
|
}
|
|
return ret;
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
|
|
static void sh_cmt_clocksource_disable(struct clocksource *cs)
|
|
static void sh_cmt_clocksource_disable(struct clocksource *cs)
|
|
{
|
|
{
|
|
- struct sh_cmt_priv *p = cs_to_sh_cmt(cs);
|
|
|
|
|
|
+ struct sh_cmt_channel *ch = cs_to_sh_cmt(cs);
|
|
|
|
|
|
- WARN_ON(!p->cs_enabled);
|
|
|
|
|
|
+ WARN_ON(!ch->cs_enabled);
|
|
|
|
|
|
- sh_cmt_stop(p, FLAG_CLOCKSOURCE);
|
|
|
|
- p->cs_enabled = false;
|
|
|
|
|
|
+ sh_cmt_stop(ch, FLAG_CLOCKSOURCE);
|
|
|
|
+ ch->cs_enabled = false;
|
|
}
|
|
}
|
|
|
|
|
|
static void sh_cmt_clocksource_suspend(struct clocksource *cs)
|
|
static void sh_cmt_clocksource_suspend(struct clocksource *cs)
|
|
{
|
|
{
|
|
- struct sh_cmt_priv *p = cs_to_sh_cmt(cs);
|
|
|
|
|
|
+ struct sh_cmt_channel *ch = cs_to_sh_cmt(cs);
|
|
|
|
|
|
- sh_cmt_stop(p, FLAG_CLOCKSOURCE);
|
|
|
|
- pm_genpd_syscore_poweroff(&p->pdev->dev);
|
|
|
|
|
|
+ sh_cmt_stop(ch, FLAG_CLOCKSOURCE);
|
|
|
|
+ pm_genpd_syscore_poweroff(&ch->cmt->pdev->dev);
|
|
}
|
|
}
|
|
|
|
|
|
static void sh_cmt_clocksource_resume(struct clocksource *cs)
|
|
static void sh_cmt_clocksource_resume(struct clocksource *cs)
|
|
{
|
|
{
|
|
- struct sh_cmt_priv *p = cs_to_sh_cmt(cs);
|
|
|
|
|
|
+ struct sh_cmt_channel *ch = cs_to_sh_cmt(cs);
|
|
|
|
|
|
- pm_genpd_syscore_poweron(&p->pdev->dev);
|
|
|
|
- sh_cmt_start(p, FLAG_CLOCKSOURCE);
|
|
|
|
|
|
+ pm_genpd_syscore_poweron(&ch->cmt->pdev->dev);
|
|
|
|
+ sh_cmt_start(ch, FLAG_CLOCKSOURCE);
|
|
}
|
|
}
|
|
|
|
|
|
-static int sh_cmt_register_clocksource(struct sh_cmt_priv *p,
|
|
|
|
- char *name, unsigned long rating)
|
|
|
|
|
|
+static int sh_cmt_register_clocksource(struct sh_cmt_channel *ch,
|
|
|
|
+ const char *name)
|
|
{
|
|
{
|
|
- struct clocksource *cs = &p->cs;
|
|
|
|
|
|
+ struct clocksource *cs = &ch->cs;
|
|
|
|
|
|
cs->name = name;
|
|
cs->name = name;
|
|
- cs->rating = rating;
|
|
|
|
|
|
+ cs->rating = 125;
|
|
cs->read = sh_cmt_clocksource_read;
|
|
cs->read = sh_cmt_clocksource_read;
|
|
cs->enable = sh_cmt_clocksource_enable;
|
|
cs->enable = sh_cmt_clocksource_enable;
|
|
cs->disable = sh_cmt_clocksource_disable;
|
|
cs->disable = sh_cmt_clocksource_disable;
|
|
@@ -554,47 +688,48 @@ static int sh_cmt_register_clocksource(struct sh_cmt_priv *p,
|
|
cs->mask = CLOCKSOURCE_MASK(sizeof(unsigned long) * 8);
|
|
cs->mask = CLOCKSOURCE_MASK(sizeof(unsigned long) * 8);
|
|
cs->flags = CLOCK_SOURCE_IS_CONTINUOUS;
|
|
cs->flags = CLOCK_SOURCE_IS_CONTINUOUS;
|
|
|
|
|
|
- dev_info(&p->pdev->dev, "used as clock source\n");
|
|
|
|
|
|
+ dev_info(&ch->cmt->pdev->dev, "ch%u: used as clock source\n",
|
|
|
|
+ ch->index);
|
|
|
|
|
|
/* Register with dummy 1 Hz value, gets updated in ->enable() */
|
|
/* Register with dummy 1 Hz value, gets updated in ->enable() */
|
|
clocksource_register_hz(cs, 1);
|
|
clocksource_register_hz(cs, 1);
|
|
return 0;
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
|
|
-static struct sh_cmt_priv *ced_to_sh_cmt(struct clock_event_device *ced)
|
|
|
|
|
|
+static struct sh_cmt_channel *ced_to_sh_cmt(struct clock_event_device *ced)
|
|
{
|
|
{
|
|
- return container_of(ced, struct sh_cmt_priv, ced);
|
|
|
|
|
|
+ return container_of(ced, struct sh_cmt_channel, ced);
|
|
}
|
|
}
|
|
|
|
|
|
-static void sh_cmt_clock_event_start(struct sh_cmt_priv *p, int periodic)
|
|
|
|
|
|
+static void sh_cmt_clock_event_start(struct sh_cmt_channel *ch, int periodic)
|
|
{
|
|
{
|
|
- struct clock_event_device *ced = &p->ced;
|
|
|
|
|
|
+ struct clock_event_device *ced = &ch->ced;
|
|
|
|
|
|
- sh_cmt_start(p, FLAG_CLOCKEVENT);
|
|
|
|
|
|
+ sh_cmt_start(ch, FLAG_CLOCKEVENT);
|
|
|
|
|
|
/* TODO: calculate good shift from rate and counter bit width */
|
|
/* TODO: calculate good shift from rate and counter bit width */
|
|
|
|
|
|
ced->shift = 32;
|
|
ced->shift = 32;
|
|
- ced->mult = div_sc(p->rate, NSEC_PER_SEC, ced->shift);
|
|
|
|
- ced->max_delta_ns = clockevent_delta2ns(p->max_match_value, ced);
|
|
|
|
|
|
+ ced->mult = div_sc(ch->rate, NSEC_PER_SEC, ced->shift);
|
|
|
|
+ ced->max_delta_ns = clockevent_delta2ns(ch->max_match_value, ced);
|
|
ced->min_delta_ns = clockevent_delta2ns(0x1f, ced);
|
|
ced->min_delta_ns = clockevent_delta2ns(0x1f, ced);
|
|
|
|
|
|
if (periodic)
|
|
if (periodic)
|
|
- sh_cmt_set_next(p, ((p->rate + HZ/2) / HZ) - 1);
|
|
|
|
|
|
+ sh_cmt_set_next(ch, ((ch->rate + HZ/2) / HZ) - 1);
|
|
else
|
|
else
|
|
- sh_cmt_set_next(p, p->max_match_value);
|
|
|
|
|
|
+ sh_cmt_set_next(ch, ch->max_match_value);
|
|
}
|
|
}
|
|
|
|
|
|
static void sh_cmt_clock_event_mode(enum clock_event_mode mode,
|
|
static void sh_cmt_clock_event_mode(enum clock_event_mode mode,
|
|
struct clock_event_device *ced)
|
|
struct clock_event_device *ced)
|
|
{
|
|
{
|
|
- struct sh_cmt_priv *p = ced_to_sh_cmt(ced);
|
|
|
|
|
|
+ struct sh_cmt_channel *ch = ced_to_sh_cmt(ced);
|
|
|
|
|
|
/* deal with old setting first */
|
|
/* deal with old setting first */
|
|
switch (ced->mode) {
|
|
switch (ced->mode) {
|
|
case CLOCK_EVT_MODE_PERIODIC:
|
|
case CLOCK_EVT_MODE_PERIODIC:
|
|
case CLOCK_EVT_MODE_ONESHOT:
|
|
case CLOCK_EVT_MODE_ONESHOT:
|
|
- sh_cmt_stop(p, FLAG_CLOCKEVENT);
|
|
|
|
|
|
+ sh_cmt_stop(ch, FLAG_CLOCKEVENT);
|
|
break;
|
|
break;
|
|
default:
|
|
default:
|
|
break;
|
|
break;
|
|
@@ -602,16 +737,18 @@ static void sh_cmt_clock_event_mode(enum clock_event_mode mode,
|
|
|
|
|
|
switch (mode) {
|
|
switch (mode) {
|
|
case CLOCK_EVT_MODE_PERIODIC:
|
|
case CLOCK_EVT_MODE_PERIODIC:
|
|
- dev_info(&p->pdev->dev, "used for periodic clock events\n");
|
|
|
|
- sh_cmt_clock_event_start(p, 1);
|
|
|
|
|
|
+ dev_info(&ch->cmt->pdev->dev,
|
|
|
|
+ "ch%u: used for periodic clock events\n", ch->index);
|
|
|
|
+ sh_cmt_clock_event_start(ch, 1);
|
|
break;
|
|
break;
|
|
case CLOCK_EVT_MODE_ONESHOT:
|
|
case CLOCK_EVT_MODE_ONESHOT:
|
|
- dev_info(&p->pdev->dev, "used for oneshot clock events\n");
|
|
|
|
- sh_cmt_clock_event_start(p, 0);
|
|
|
|
|
|
+ dev_info(&ch->cmt->pdev->dev,
|
|
|
|
+ "ch%u: used for oneshot clock events\n", ch->index);
|
|
|
|
+ sh_cmt_clock_event_start(ch, 0);
|
|
break;
|
|
break;
|
|
case CLOCK_EVT_MODE_SHUTDOWN:
|
|
case CLOCK_EVT_MODE_SHUTDOWN:
|
|
case CLOCK_EVT_MODE_UNUSED:
|
|
case CLOCK_EVT_MODE_UNUSED:
|
|
- sh_cmt_stop(p, FLAG_CLOCKEVENT);
|
|
|
|
|
|
+ sh_cmt_stop(ch, FLAG_CLOCKEVENT);
|
|
break;
|
|
break;
|
|
default:
|
|
default:
|
|
break;
|
|
break;
|
|
@@ -621,196 +758,341 @@ static void sh_cmt_clock_event_mode(enum clock_event_mode mode,
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static int sh_cmt_clock_event_next(unsigned long delta,
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static int sh_cmt_clock_event_next(unsigned long delta,
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struct clock_event_device *ced)
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struct clock_event_device *ced)
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{
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{
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- struct sh_cmt_priv *p = ced_to_sh_cmt(ced);
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+ struct sh_cmt_channel *ch = ced_to_sh_cmt(ced);
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BUG_ON(ced->mode != CLOCK_EVT_MODE_ONESHOT);
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BUG_ON(ced->mode != CLOCK_EVT_MODE_ONESHOT);
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- if (likely(p->flags & FLAG_IRQCONTEXT))
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- p->next_match_value = delta - 1;
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+ if (likely(ch->flags & FLAG_IRQCONTEXT))
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+ ch->next_match_value = delta - 1;
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else
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else
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- sh_cmt_set_next(p, delta - 1);
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+ sh_cmt_set_next(ch, delta - 1);
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return 0;
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return 0;
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}
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}
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static void sh_cmt_clock_event_suspend(struct clock_event_device *ced)
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static void sh_cmt_clock_event_suspend(struct clock_event_device *ced)
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{
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{
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- struct sh_cmt_priv *p = ced_to_sh_cmt(ced);
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+ struct sh_cmt_channel *ch = ced_to_sh_cmt(ced);
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- pm_genpd_syscore_poweroff(&p->pdev->dev);
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- clk_unprepare(p->clk);
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+ pm_genpd_syscore_poweroff(&ch->cmt->pdev->dev);
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+ clk_unprepare(ch->cmt->clk);
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}
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}
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static void sh_cmt_clock_event_resume(struct clock_event_device *ced)
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static void sh_cmt_clock_event_resume(struct clock_event_device *ced)
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{
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{
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- struct sh_cmt_priv *p = ced_to_sh_cmt(ced);
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+ struct sh_cmt_channel *ch = ced_to_sh_cmt(ced);
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- clk_prepare(p->clk);
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- pm_genpd_syscore_poweron(&p->pdev->dev);
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+ clk_prepare(ch->cmt->clk);
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+ pm_genpd_syscore_poweron(&ch->cmt->pdev->dev);
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}
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}
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-static void sh_cmt_register_clockevent(struct sh_cmt_priv *p,
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- char *name, unsigned long rating)
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+static int sh_cmt_register_clockevent(struct sh_cmt_channel *ch,
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+ const char *name)
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{
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{
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- struct clock_event_device *ced = &p->ced;
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+ struct clock_event_device *ced = &ch->ced;
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+ int irq;
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+ int ret;
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- memset(ced, 0, sizeof(*ced));
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+ irq = platform_get_irq(ch->cmt->pdev, ch->cmt->legacy ? 0 : ch->index);
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+ if (irq < 0) {
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+ dev_err(&ch->cmt->pdev->dev, "ch%u: failed to get irq\n",
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+ ch->index);
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+ return irq;
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+ }
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+
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+ ret = request_irq(irq, sh_cmt_interrupt,
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+ IRQF_TIMER | IRQF_IRQPOLL | IRQF_NOBALANCING,
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+ dev_name(&ch->cmt->pdev->dev), ch);
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+ if (ret) {
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+ dev_err(&ch->cmt->pdev->dev, "ch%u: failed to request irq %d\n",
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+ ch->index, irq);
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+ return ret;
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+ }
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ced->name = name;
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ced->name = name;
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ced->features = CLOCK_EVT_FEAT_PERIODIC;
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ced->features = CLOCK_EVT_FEAT_PERIODIC;
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ced->features |= CLOCK_EVT_FEAT_ONESHOT;
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ced->features |= CLOCK_EVT_FEAT_ONESHOT;
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- ced->rating = rating;
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- ced->cpumask = cpumask_of(0);
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+ ced->rating = 125;
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+ ced->cpumask = cpu_possible_mask;
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ced->set_next_event = sh_cmt_clock_event_next;
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ced->set_next_event = sh_cmt_clock_event_next;
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ced->set_mode = sh_cmt_clock_event_mode;
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ced->set_mode = sh_cmt_clock_event_mode;
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ced->suspend = sh_cmt_clock_event_suspend;
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ced->suspend = sh_cmt_clock_event_suspend;
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ced->resume = sh_cmt_clock_event_resume;
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ced->resume = sh_cmt_clock_event_resume;
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- dev_info(&p->pdev->dev, "used for clock events\n");
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+ dev_info(&ch->cmt->pdev->dev, "ch%u: used for clock events\n",
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+ ch->index);
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clockevents_register_device(ced);
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clockevents_register_device(ced);
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+
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+ return 0;
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}
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}
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-static int sh_cmt_register(struct sh_cmt_priv *p, char *name,
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- unsigned long clockevent_rating,
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- unsigned long clocksource_rating)
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+static int sh_cmt_register(struct sh_cmt_channel *ch, const char *name,
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+ bool clockevent, bool clocksource)
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{
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{
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- if (clockevent_rating)
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- sh_cmt_register_clockevent(p, name, clockevent_rating);
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+ int ret;
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+
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+ if (clockevent) {
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+ ch->cmt->has_clockevent = true;
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+ ret = sh_cmt_register_clockevent(ch, name);
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+ if (ret < 0)
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+ return ret;
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+ }
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- if (clocksource_rating)
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- sh_cmt_register_clocksource(p, name, clocksource_rating);
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+ if (clocksource) {
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+ ch->cmt->has_clocksource = true;
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+ sh_cmt_register_clocksource(ch, name);
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+ }
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return 0;
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return 0;
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}
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}
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-static int sh_cmt_setup(struct sh_cmt_priv *p, struct platform_device *pdev)
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+static int sh_cmt_setup_channel(struct sh_cmt_channel *ch, unsigned int index,
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+ unsigned int hwidx, bool clockevent,
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+ bool clocksource, struct sh_cmt_device *cmt)
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{
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{
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- struct sh_timer_config *cfg = pdev->dev.platform_data;
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- struct resource *res, *res2;
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- int irq, ret;
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- ret = -ENXIO;
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+ int ret;
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- memset(p, 0, sizeof(*p));
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- p->pdev = pdev;
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+ /* Skip unused channels. */
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+ if (!clockevent && !clocksource)
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+ return 0;
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- if (!cfg) {
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- dev_err(&p->pdev->dev, "missing platform data\n");
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- goto err0;
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+ ch->cmt = cmt;
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+ ch->index = index;
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+ ch->hwidx = hwidx;
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+
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+ /*
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+ * Compute the address of the channel control register block. For the
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+ * timers with a per-channel start/stop register, compute its address
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+ * as well.
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+ *
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+ * For legacy configuration the address has been mapped explicitly.
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+ */
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+ if (cmt->legacy) {
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+ ch->ioctrl = cmt->mapbase_ch;
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+ } else {
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+ switch (cmt->info->model) {
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+ case SH_CMT_16BIT:
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+ ch->ioctrl = cmt->mapbase + 2 + ch->hwidx * 6;
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+ break;
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+ case SH_CMT_32BIT:
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+ case SH_CMT_48BIT:
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+ ch->ioctrl = cmt->mapbase + 0x10 + ch->hwidx * 0x10;
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+ break;
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+ case SH_CMT_32BIT_FAST:
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+ /*
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+ * The 32-bit "fast" timer has a single channel at hwidx
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+ * 5 but is located at offset 0x40 instead of 0x60 for
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+ * some reason.
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+ */
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+ ch->ioctrl = cmt->mapbase + 0x40;
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+ break;
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+ case SH_CMT_48BIT_GEN2:
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+ ch->iostart = cmt->mapbase + ch->hwidx * 0x100;
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+ ch->ioctrl = ch->iostart + 0x10;
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+ break;
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+ }
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}
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}
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- res = platform_get_resource(p->pdev, IORESOURCE_MEM, 0);
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- if (!res) {
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- dev_err(&p->pdev->dev, "failed to get I/O memory\n");
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- goto err0;
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+ if (cmt->info->width == (sizeof(ch->max_match_value) * 8))
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+ ch->max_match_value = ~0;
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+ else
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+ ch->max_match_value = (1 << cmt->info->width) - 1;
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+
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+ ch->match_value = ch->max_match_value;
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+ raw_spin_lock_init(&ch->lock);
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+
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+ if (cmt->legacy) {
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+ ch->timer_bit = ch->hwidx;
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+ } else {
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+ ch->timer_bit = cmt->info->model == SH_CMT_48BIT_GEN2
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+ ? 0 : ch->hwidx;
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}
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}
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- /* optional resource for the shared timer start/stop register */
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- res2 = platform_get_resource(p->pdev, IORESOURCE_MEM, 1);
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+ ret = sh_cmt_register(ch, dev_name(&cmt->pdev->dev),
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+ clockevent, clocksource);
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+ if (ret) {
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+ dev_err(&cmt->pdev->dev, "ch%u: registration failed\n",
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+ ch->index);
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+ return ret;
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+ }
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+ ch->cs_enabled = false;
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- irq = platform_get_irq(p->pdev, 0);
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- if (irq < 0) {
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- dev_err(&p->pdev->dev, "failed to get irq\n");
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- goto err0;
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+ return 0;
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+}
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+
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+static int sh_cmt_map_memory(struct sh_cmt_device *cmt)
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+{
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+ struct resource *mem;
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+
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+ mem = platform_get_resource(cmt->pdev, IORESOURCE_MEM, 0);
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+ if (!mem) {
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+ dev_err(&cmt->pdev->dev, "failed to get I/O memory\n");
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+ return -ENXIO;
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}
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}
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- /* map memory, let mapbase point to our channel */
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- p->mapbase = ioremap_nocache(res->start, resource_size(res));
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- if (p->mapbase == NULL) {
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- dev_err(&p->pdev->dev, "failed to remap I/O memory\n");
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- goto err0;
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+ cmt->mapbase = ioremap_nocache(mem->start, resource_size(mem));
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+ if (cmt->mapbase == NULL) {
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+ dev_err(&cmt->pdev->dev, "failed to remap I/O memory\n");
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+ return -ENXIO;
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}
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}
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- /* map second resource for CMSTR */
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- p->mapbase_str = ioremap_nocache(res2 ? res2->start :
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- res->start - cfg->channel_offset,
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- res2 ? resource_size(res2) : 2);
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- if (p->mapbase_str == NULL) {
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- dev_err(&p->pdev->dev, "failed to remap I/O second memory\n");
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- goto err1;
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+ return 0;
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+}
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+
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+static int sh_cmt_map_memory_legacy(struct sh_cmt_device *cmt)
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+{
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+ struct sh_timer_config *cfg = cmt->pdev->dev.platform_data;
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+ struct resource *res, *res2;
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+
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+ /* map memory, let mapbase_ch point to our channel */
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+ res = platform_get_resource(cmt->pdev, IORESOURCE_MEM, 0);
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+ if (!res) {
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+ dev_err(&cmt->pdev->dev, "failed to get I/O memory\n");
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+ return -ENXIO;
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}
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}
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- /* request irq using setup_irq() (too early for request_irq()) */
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- p->irqaction.name = dev_name(&p->pdev->dev);
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- p->irqaction.handler = sh_cmt_interrupt;
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- p->irqaction.dev_id = p;
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- p->irqaction.flags = IRQF_TIMER | IRQF_IRQPOLL | IRQF_NOBALANCING;
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-
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- /* get hold of clock */
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- p->clk = clk_get(&p->pdev->dev, "cmt_fck");
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- if (IS_ERR(p->clk)) {
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- dev_err(&p->pdev->dev, "cannot get clock\n");
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- ret = PTR_ERR(p->clk);
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- goto err2;
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+ cmt->mapbase_ch = ioremap_nocache(res->start, resource_size(res));
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+ if (cmt->mapbase_ch == NULL) {
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+ dev_err(&cmt->pdev->dev, "failed to remap I/O memory\n");
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+ return -ENXIO;
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}
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}
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- ret = clk_prepare(p->clk);
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- if (ret < 0)
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- goto err3;
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+ /* optional resource for the shared timer start/stop register */
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+ res2 = platform_get_resource(cmt->pdev, IORESOURCE_MEM, 1);
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- if (res2 && (resource_size(res2) == 4)) {
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- /* assume both CMSTR and CMCSR to be 32-bit */
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- p->read_control = sh_cmt_read32;
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- p->write_control = sh_cmt_write32;
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- } else {
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- p->read_control = sh_cmt_read16;
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- p->write_control = sh_cmt_write16;
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+ /* map second resource for CMSTR */
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+ cmt->mapbase = ioremap_nocache(res2 ? res2->start :
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+ res->start - cfg->channel_offset,
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+ res2 ? resource_size(res2) : 2);
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+ if (cmt->mapbase == NULL) {
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+ dev_err(&cmt->pdev->dev, "failed to remap I/O second memory\n");
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+ iounmap(cmt->mapbase_ch);
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+ return -ENXIO;
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}
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}
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- if (resource_size(res) == 6) {
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- p->width = 16;
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- p->read_count = sh_cmt_read16;
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- p->write_count = sh_cmt_write16;
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- p->overflow_bit = 0x80;
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- p->clear_bits = ~0x80;
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- } else {
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- p->width = 32;
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- p->read_count = sh_cmt_read32;
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- p->write_count = sh_cmt_write32;
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- p->overflow_bit = 0x8000;
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- p->clear_bits = ~0xc000;
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+ /* identify the model based on the resources */
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+ if (resource_size(res) == 6)
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+ cmt->info = &sh_cmt_info[SH_CMT_16BIT];
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+ else if (res2 && (resource_size(res2) == 4))
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+ cmt->info = &sh_cmt_info[SH_CMT_48BIT_GEN2];
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+ else
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+ cmt->info = &sh_cmt_info[SH_CMT_32BIT];
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+
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+ return 0;
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+}
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+
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+static void sh_cmt_unmap_memory(struct sh_cmt_device *cmt)
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+{
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+ iounmap(cmt->mapbase);
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|
|
+ if (cmt->mapbase_ch)
|
|
|
|
+ iounmap(cmt->mapbase_ch);
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static int sh_cmt_setup(struct sh_cmt_device *cmt, struct platform_device *pdev)
|
|
|
|
+{
|
|
|
|
+ struct sh_timer_config *cfg = pdev->dev.platform_data;
|
|
|
|
+ const struct platform_device_id *id = pdev->id_entry;
|
|
|
|
+ unsigned int hw_channels;
|
|
|
|
+ int ret;
|
|
|
|
+
|
|
|
|
+ memset(cmt, 0, sizeof(*cmt));
|
|
|
|
+ cmt->pdev = pdev;
|
|
|
|
+
|
|
|
|
+ if (!cfg) {
|
|
|
|
+ dev_err(&cmt->pdev->dev, "missing platform data\n");
|
|
|
|
+ return -ENXIO;
|
|
}
|
|
}
|
|
|
|
|
|
- if (p->width == (sizeof(p->max_match_value) * 8))
|
|
|
|
- p->max_match_value = ~0;
|
|
|
|
|
|
+ cmt->info = (const struct sh_cmt_info *)id->driver_data;
|
|
|
|
+ cmt->legacy = cmt->info ? false : true;
|
|
|
|
+
|
|
|
|
+ /* Get hold of clock. */
|
|
|
|
+ cmt->clk = clk_get(&cmt->pdev->dev, cmt->legacy ? "cmt_fck" : "fck");
|
|
|
|
+ if (IS_ERR(cmt->clk)) {
|
|
|
|
+ dev_err(&cmt->pdev->dev, "cannot get clock\n");
|
|
|
|
+ return PTR_ERR(cmt->clk);
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ ret = clk_prepare(cmt->clk);
|
|
|
|
+ if (ret < 0)
|
|
|
|
+ goto err_clk_put;
|
|
|
|
+
|
|
|
|
+ /*
|
|
|
|
+ * Map the memory resource(s). We need to support both the legacy
|
|
|
|
+ * platform device configuration (with one device per channel) and the
|
|
|
|
+ * new version (with multiple channels per device).
|
|
|
|
+ */
|
|
|
|
+ if (cmt->legacy)
|
|
|
|
+ ret = sh_cmt_map_memory_legacy(cmt);
|
|
else
|
|
else
|
|
- p->max_match_value = (1 << p->width) - 1;
|
|
|
|
|
|
+ ret = sh_cmt_map_memory(cmt);
|
|
|
|
|
|
- p->match_value = p->max_match_value;
|
|
|
|
- raw_spin_lock_init(&p->lock);
|
|
|
|
|
|
+ if (ret < 0)
|
|
|
|
+ goto err_clk_unprepare;
|
|
|
|
|
|
- ret = sh_cmt_register(p, (char *)dev_name(&p->pdev->dev),
|
|
|
|
- cfg->clockevent_rating,
|
|
|
|
- cfg->clocksource_rating);
|
|
|
|
- if (ret) {
|
|
|
|
- dev_err(&p->pdev->dev, "registration failed\n");
|
|
|
|
- goto err4;
|
|
|
|
|
|
+ /* Allocate and setup the channels. */
|
|
|
|
+ if (cmt->legacy) {
|
|
|
|
+ cmt->num_channels = 1;
|
|
|
|
+ hw_channels = 0;
|
|
|
|
+ } else {
|
|
|
|
+ cmt->num_channels = hweight8(cfg->channels_mask);
|
|
|
|
+ hw_channels = cfg->channels_mask;
|
|
}
|
|
}
|
|
- p->cs_enabled = false;
|
|
|
|
|
|
|
|
- ret = setup_irq(irq, &p->irqaction);
|
|
|
|
- if (ret) {
|
|
|
|
- dev_err(&p->pdev->dev, "failed to request irq %d\n", irq);
|
|
|
|
- goto err4;
|
|
|
|
|
|
+ cmt->channels = kzalloc(cmt->num_channels * sizeof(*cmt->channels),
|
|
|
|
+ GFP_KERNEL);
|
|
|
|
+ if (cmt->channels == NULL) {
|
|
|
|
+ ret = -ENOMEM;
|
|
|
|
+ goto err_unmap;
|
|
}
|
|
}
|
|
|
|
|
|
- platform_set_drvdata(pdev, p);
|
|
|
|
|
|
+ if (cmt->legacy) {
|
|
|
|
+ ret = sh_cmt_setup_channel(&cmt->channels[0],
|
|
|
|
+ cfg->timer_bit, cfg->timer_bit,
|
|
|
|
+ cfg->clockevent_rating != 0,
|
|
|
|
+ cfg->clocksource_rating != 0, cmt);
|
|
|
|
+ if (ret < 0)
|
|
|
|
+ goto err_unmap;
|
|
|
|
+ } else {
|
|
|
|
+ unsigned int mask = hw_channels;
|
|
|
|
+ unsigned int i;
|
|
|
|
+
|
|
|
|
+ /*
|
|
|
|
+ * Use the first channel as a clock event device and the second
|
|
|
|
+ * channel as a clock source. If only one channel is available
|
|
|
|
+ * use it for both.
|
|
|
|
+ */
|
|
|
|
+ for (i = 0; i < cmt->num_channels; ++i) {
|
|
|
|
+ unsigned int hwidx = ffs(mask) - 1;
|
|
|
|
+ bool clocksource = i == 1 || cmt->num_channels == 1;
|
|
|
|
+ bool clockevent = i == 0;
|
|
|
|
+
|
|
|
|
+ ret = sh_cmt_setup_channel(&cmt->channels[i], i, hwidx,
|
|
|
|
+ clockevent, clocksource,
|
|
|
|
+ cmt);
|
|
|
|
+ if (ret < 0)
|
|
|
|
+ goto err_unmap;
|
|
|
|
+
|
|
|
|
+ mask &= ~(1 << hwidx);
|
|
|
|
+ }
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ platform_set_drvdata(pdev, cmt);
|
|
|
|
|
|
return 0;
|
|
return 0;
|
|
-err4:
|
|
|
|
- clk_unprepare(p->clk);
|
|
|
|
-err3:
|
|
|
|
- clk_put(p->clk);
|
|
|
|
-err2:
|
|
|
|
- iounmap(p->mapbase_str);
|
|
|
|
-err1:
|
|
|
|
- iounmap(p->mapbase);
|
|
|
|
-err0:
|
|
|
|
|
|
+
|
|
|
|
+err_unmap:
|
|
|
|
+ kfree(cmt->channels);
|
|
|
|
+ sh_cmt_unmap_memory(cmt);
|
|
|
|
+err_clk_unprepare:
|
|
|
|
+ clk_unprepare(cmt->clk);
|
|
|
|
+err_clk_put:
|
|
|
|
+ clk_put(cmt->clk);
|
|
return ret;
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
|
|
static int sh_cmt_probe(struct platform_device *pdev)
|
|
static int sh_cmt_probe(struct platform_device *pdev)
|
|
{
|
|
{
|
|
- struct sh_cmt_priv *p = platform_get_drvdata(pdev);
|
|
|
|
- struct sh_timer_config *cfg = pdev->dev.platform_data;
|
|
|
|
|
|
+ struct sh_cmt_device *cmt = platform_get_drvdata(pdev);
|
|
int ret;
|
|
int ret;
|
|
|
|
|
|
if (!is_early_platform_device(pdev)) {
|
|
if (!is_early_platform_device(pdev)) {
|
|
@@ -818,20 +1100,20 @@ static int sh_cmt_probe(struct platform_device *pdev)
|
|
pm_runtime_enable(&pdev->dev);
|
|
pm_runtime_enable(&pdev->dev);
|
|
}
|
|
}
|
|
|
|
|
|
- if (p) {
|
|
|
|
|
|
+ if (cmt) {
|
|
dev_info(&pdev->dev, "kept as earlytimer\n");
|
|
dev_info(&pdev->dev, "kept as earlytimer\n");
|
|
goto out;
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
|
|
- p = kmalloc(sizeof(*p), GFP_KERNEL);
|
|
|
|
- if (p == NULL) {
|
|
|
|
|
|
+ cmt = kzalloc(sizeof(*cmt), GFP_KERNEL);
|
|
|
|
+ if (cmt == NULL) {
|
|
dev_err(&pdev->dev, "failed to allocate driver data\n");
|
|
dev_err(&pdev->dev, "failed to allocate driver data\n");
|
|
return -ENOMEM;
|
|
return -ENOMEM;
|
|
}
|
|
}
|
|
|
|
|
|
- ret = sh_cmt_setup(p, pdev);
|
|
|
|
|
|
+ ret = sh_cmt_setup(cmt, pdev);
|
|
if (ret) {
|
|
if (ret) {
|
|
- kfree(p);
|
|
|
|
|
|
+ kfree(cmt);
|
|
pm_runtime_idle(&pdev->dev);
|
|
pm_runtime_idle(&pdev->dev);
|
|
return ret;
|
|
return ret;
|
|
}
|
|
}
|
|
@@ -839,7 +1121,7 @@ static int sh_cmt_probe(struct platform_device *pdev)
|
|
return 0;
|
|
return 0;
|
|
|
|
|
|
out:
|
|
out:
|
|
- if (cfg->clockevent_rating || cfg->clocksource_rating)
|
|
|
|
|
|
+ if (cmt->has_clockevent || cmt->has_clocksource)
|
|
pm_runtime_irq_safe(&pdev->dev);
|
|
pm_runtime_irq_safe(&pdev->dev);
|
|
else
|
|
else
|
|
pm_runtime_idle(&pdev->dev);
|
|
pm_runtime_idle(&pdev->dev);
|
|
@@ -852,12 +1134,24 @@ static int sh_cmt_remove(struct platform_device *pdev)
|
|
return -EBUSY; /* cannot unregister clockevent and clocksource */
|
|
return -EBUSY; /* cannot unregister clockevent and clocksource */
|
|
}
|
|
}
|
|
|
|
|
|
|
|
+static const struct platform_device_id sh_cmt_id_table[] = {
|
|
|
|
+ { "sh_cmt", 0 },
|
|
|
|
+ { "sh-cmt-16", (kernel_ulong_t)&sh_cmt_info[SH_CMT_16BIT] },
|
|
|
|
+ { "sh-cmt-32", (kernel_ulong_t)&sh_cmt_info[SH_CMT_32BIT] },
|
|
|
|
+ { "sh-cmt-32-fast", (kernel_ulong_t)&sh_cmt_info[SH_CMT_32BIT_FAST] },
|
|
|
|
+ { "sh-cmt-48", (kernel_ulong_t)&sh_cmt_info[SH_CMT_48BIT] },
|
|
|
|
+ { "sh-cmt-48-gen2", (kernel_ulong_t)&sh_cmt_info[SH_CMT_48BIT_GEN2] },
|
|
|
|
+ { }
|
|
|
|
+};
|
|
|
|
+MODULE_DEVICE_TABLE(platform, sh_cmt_id_table);
|
|
|
|
+
|
|
static struct platform_driver sh_cmt_device_driver = {
|
|
static struct platform_driver sh_cmt_device_driver = {
|
|
.probe = sh_cmt_probe,
|
|
.probe = sh_cmt_probe,
|
|
.remove = sh_cmt_remove,
|
|
.remove = sh_cmt_remove,
|
|
.driver = {
|
|
.driver = {
|
|
.name = "sh_cmt",
|
|
.name = "sh_cmt",
|
|
- }
|
|
|
|
|
|
+ },
|
|
|
|
+ .id_table = sh_cmt_id_table,
|
|
};
|
|
};
|
|
|
|
|
|
static int __init sh_cmt_init(void)
|
|
static int __init sh_cmt_init(void)
|