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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
commit5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch)
treea94efe259b9009378be6d90eb30d2b019d95c194 /include/soc/at91
parentInitial commit. (diff)
downloadlinux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.tar.xz
linux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.zip
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'include/soc/at91')
-rw-r--r--include/soc/at91/at91sam9_ddrsdr.h123
-rw-r--r--include/soc/at91/at91sam9_sdramc.h81
-rw-r--r--include/soc/at91/atmel-secumod.h16
-rw-r--r--include/soc/at91/atmel-sfr.h51
-rw-r--r--include/soc/at91/atmel_tcb.h275
5 files changed, 546 insertions, 0 deletions
diff --git a/include/soc/at91/at91sam9_ddrsdr.h b/include/soc/at91/at91sam9_ddrsdr.h
new file mode 100644
index 000000000..ffdec6f82
--- /dev/null
+++ b/include/soc/at91/at91sam9_ddrsdr.h
@@ -0,0 +1,123 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Header file for the Atmel DDR/SDR SDRAM Controller
+ *
+ * Copyright (C) 2010 Atmel Corporation
+ * Nicolas Ferre <nicolas.ferre@atmel.com>
+ */
+#ifndef AT91SAM9_DDRSDR_H
+#define AT91SAM9_DDRSDR_H
+
+#define AT91_DDRSDRC_MR 0x00 /* Mode Register */
+#define AT91_DDRSDRC_MODE (0x7 << 0) /* Command Mode */
+#define AT91_DDRSDRC_MODE_NORMAL 0
+#define AT91_DDRSDRC_MODE_NOP 1
+#define AT91_DDRSDRC_MODE_PRECHARGE 2
+#define AT91_DDRSDRC_MODE_LMR 3
+#define AT91_DDRSDRC_MODE_REFRESH 4
+#define AT91_DDRSDRC_MODE_EXT_LMR 5
+#define AT91_DDRSDRC_MODE_DEEP 6
+
+#define AT91_DDRSDRC_RTR 0x04 /* Refresh Timer Register */
+#define AT91_DDRSDRC_COUNT (0xfff << 0) /* Refresh Timer Counter */
+
+#define AT91_DDRSDRC_CR 0x08 /* Configuration Register */
+#define AT91_DDRSDRC_NC (3 << 0) /* Number of Column Bits */
+#define AT91_DDRSDRC_NC_SDR8 (0 << 0)
+#define AT91_DDRSDRC_NC_SDR9 (1 << 0)
+#define AT91_DDRSDRC_NC_SDR10 (2 << 0)
+#define AT91_DDRSDRC_NC_SDR11 (3 << 0)
+#define AT91_DDRSDRC_NC_DDR9 (0 << 0)
+#define AT91_DDRSDRC_NC_DDR10 (1 << 0)
+#define AT91_DDRSDRC_NC_DDR11 (2 << 0)
+#define AT91_DDRSDRC_NC_DDR12 (3 << 0)
+#define AT91_DDRSDRC_NR (3 << 2) /* Number of Row Bits */
+#define AT91_DDRSDRC_NR_11 (0 << 2)
+#define AT91_DDRSDRC_NR_12 (1 << 2)
+#define AT91_DDRSDRC_NR_13 (2 << 2)
+#define AT91_DDRSDRC_NR_14 (3 << 2)
+#define AT91_DDRSDRC_CAS (7 << 4) /* CAS Latency */
+#define AT91_DDRSDRC_CAS_2 (2 << 4)
+#define AT91_DDRSDRC_CAS_3 (3 << 4)
+#define AT91_DDRSDRC_CAS_25 (6 << 4)
+#define AT91_DDRSDRC_RST_DLL (1 << 7) /* Reset DLL */
+#define AT91_DDRSDRC_DICDS (1 << 8) /* Output impedance control */
+#define AT91_DDRSDRC_DIS_DLL (1 << 9) /* Disable DLL [SAM9 Only] */
+#define AT91_DDRSDRC_OCD (1 << 12) /* Off-Chip Driver [SAM9 Only] */
+#define AT91_DDRSDRC_DQMS (1 << 16) /* Mask Data is Shared [SAM9 Only] */
+#define AT91_DDRSDRC_ACTBST (1 << 18) /* Active Bank X to Burst Stop Read Access Bank Y [SAM9 Only] */
+
+#define AT91_DDRSDRC_T0PR 0x0C /* Timing 0 Register */
+#define AT91_DDRSDRC_TRAS (0xf << 0) /* Active to Precharge delay */
+#define AT91_DDRSDRC_TRCD (0xf << 4) /* Row to Column delay */
+#define AT91_DDRSDRC_TWR (0xf << 8) /* Write recovery delay */
+#define AT91_DDRSDRC_TRC (0xf << 12) /* Row cycle delay */
+#define AT91_DDRSDRC_TRP (0xf << 16) /* Row precharge delay */
+#define AT91_DDRSDRC_TRRD (0xf << 20) /* Active BankA to BankB */
+#define AT91_DDRSDRC_TWTR (0x7 << 24) /* Internal Write to Read delay */
+#define AT91_DDRSDRC_RED_WRRD (0x1 << 27) /* Reduce Write to Read Delay [SAM9 Only] */
+#define AT91_DDRSDRC_TMRD (0xf << 28) /* Load mode to active/refresh delay */
+
+#define AT91_DDRSDRC_T1PR 0x10 /* Timing 1 Register */
+#define AT91_DDRSDRC_TRFC (0x1f << 0) /* Row Cycle Delay */
+#define AT91_DDRSDRC_TXSNR (0xff << 8) /* Exit self-refresh to non-read */
+#define AT91_DDRSDRC_TXSRD (0xff << 16) /* Exit self-refresh to read */
+#define AT91_DDRSDRC_TXP (0xf << 24) /* Exit power-down delay */
+
+#define AT91_DDRSDRC_T2PR 0x14 /* Timing 2 Register [SAM9 Only] */
+#define AT91_DDRSDRC_TXARD (0xf << 0) /* Exit active power down delay to read command in mode "Fast Exit" */
+#define AT91_DDRSDRC_TXARDS (0xf << 4) /* Exit active power down delay to read command in mode "Slow Exit" */
+#define AT91_DDRSDRC_TRPA (0xf << 8) /* Row Precharge All delay */
+#define AT91_DDRSDRC_TRTP (0x7 << 12) /* Read to Precharge delay */
+
+#define AT91_DDRSDRC_LPR 0x1C /* Low Power Register */
+#define AT91_DDRSDRC_LPCB (3 << 0) /* Low-power Configurations */
+#define AT91_DDRSDRC_LPCB_DISABLE 0
+#define AT91_DDRSDRC_LPCB_SELF_REFRESH 1
+#define AT91_DDRSDRC_LPCB_POWER_DOWN 2
+#define AT91_DDRSDRC_LPCB_DEEP_POWER_DOWN 3
+#define AT91_DDRSDRC_CLKFR (1 << 2) /* Clock Frozen */
+#define AT91_DDRSDRC_LPDDR2_PWOFF (1 << 3) /* LPDDR Power Off */
+#define AT91_DDRSDRC_PASR (7 << 4) /* Partial Array Self Refresh */
+#define AT91_DDRSDRC_TCSR (3 << 8) /* Temperature Compensated Self Refresh */
+#define AT91_DDRSDRC_DS (3 << 10) /* Drive Strength */
+#define AT91_DDRSDRC_TIMEOUT (3 << 12) /* Time to define when Low Power Mode is enabled */
+#define AT91_DDRSDRC_TIMEOUT_0_CLK_CYCLES (0 << 12)
+#define AT91_DDRSDRC_TIMEOUT_64_CLK_CYCLES (1 << 12)
+#define AT91_DDRSDRC_TIMEOUT_128_CLK_CYCLES (2 << 12)
+#define AT91_DDRSDRC_APDE (1 << 16) /* Active power down exit time */
+#define AT91_DDRSDRC_UPD_MR (3 << 20) /* Update load mode register and extended mode register */
+
+#define AT91_DDRSDRC_MDR 0x20 /* Memory Device Register */
+#define AT91_DDRSDRC_MD (7 << 0) /* Memory Device Type */
+#define AT91_DDRSDRC_MD_SDR 0
+#define AT91_DDRSDRC_MD_LOW_POWER_SDR 1
+#define AT91_DDRSDRC_MD_LOW_POWER_DDR 3
+#define AT91_DDRSDRC_MD_LPDDR3 5
+#define AT91_DDRSDRC_MD_DDR2 6 /* [SAM9 Only] */
+#define AT91_DDRSDRC_MD_LPDDR2 7
+#define AT91_DDRSDRC_DBW (1 << 4) /* Data Bus Width */
+#define AT91_DDRSDRC_DBW_32BITS (0 << 4)
+#define AT91_DDRSDRC_DBW_16BITS (1 << 4)
+
+#define AT91_DDRSDRC_DLL 0x24 /* DLL Information Register */
+#define AT91_DDRSDRC_MDINC (1 << 0) /* Master Delay increment */
+#define AT91_DDRSDRC_MDDEC (1 << 1) /* Master Delay decrement */
+#define AT91_DDRSDRC_MDOVF (1 << 2) /* Master Delay Overflow */
+#define AT91_DDRSDRC_MDVAL (0xff << 8) /* Master Delay value */
+
+#define AT91_DDRSDRC_HS 0x2C /* High Speed Register [SAM9 Only] */
+#define AT91_DDRSDRC_DIS_ATCP_RD (1 << 2) /* Anticip read access is disabled */
+
+#define AT91_DDRSDRC_DELAY(n) (0x30 + (0x4 * (n))) /* Delay I/O Register n */
+
+#define AT91_DDRSDRC_WPMR 0xE4 /* Write Protect Mode Register [SAM9 Only] */
+#define AT91_DDRSDRC_WP (1 << 0) /* Write protect enable */
+#define AT91_DDRSDRC_WPKEY (0xffffff << 8) /* Write protect key */
+#define AT91_DDRSDRC_KEY (0x444452 << 8) /* Write protect key = "DDR" */
+
+#define AT91_DDRSDRC_WPSR 0xE8 /* Write Protect Status Register [SAM9 Only] */
+#define AT91_DDRSDRC_WPVS (1 << 0) /* Write protect violation status */
+#define AT91_DDRSDRC_WPVSRC (0xffff << 8) /* Write protect violation source */
+
+#endif
diff --git a/include/soc/at91/at91sam9_sdramc.h b/include/soc/at91/at91sam9_sdramc.h
new file mode 100644
index 000000000..e816f9979
--- /dev/null
+++ b/include/soc/at91/at91sam9_sdramc.h
@@ -0,0 +1,81 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * arch/arm/mach-at91/include/mach/at91sam9_sdramc.h
+ *
+ * Copyright (C) 2007 Andrew Victor
+ * Copyright (C) 2007 Atmel Corporation.
+ *
+ * SDRAM Controllers (SDRAMC) - System peripherals registers.
+ * Based on AT91SAM9261 datasheet revision D.
+ */
+
+#ifndef AT91SAM9_SDRAMC_H
+#define AT91SAM9_SDRAMC_H
+
+/* SDRAM Controller (SDRAMC) registers */
+#define AT91_SDRAMC_MR 0x00 /* SDRAM Controller Mode Register */
+#define AT91_SDRAMC_MODE (0xf << 0) /* Command Mode */
+#define AT91_SDRAMC_MODE_NORMAL 0
+#define AT91_SDRAMC_MODE_NOP 1
+#define AT91_SDRAMC_MODE_PRECHARGE 2
+#define AT91_SDRAMC_MODE_LMR 3
+#define AT91_SDRAMC_MODE_REFRESH 4
+#define AT91_SDRAMC_MODE_EXT_LMR 5
+#define AT91_SDRAMC_MODE_DEEP 6
+
+#define AT91_SDRAMC_TR 0x04 /* SDRAM Controller Refresh Timer Register */
+#define AT91_SDRAMC_COUNT (0xfff << 0) /* Refresh Timer Counter */
+
+#define AT91_SDRAMC_CR 0x08 /* SDRAM Controller Configuration Register */
+#define AT91_SDRAMC_NC (3 << 0) /* Number of Column Bits */
+#define AT91_SDRAMC_NC_8 (0 << 0)
+#define AT91_SDRAMC_NC_9 (1 << 0)
+#define AT91_SDRAMC_NC_10 (2 << 0)
+#define AT91_SDRAMC_NC_11 (3 << 0)
+#define AT91_SDRAMC_NR (3 << 2) /* Number of Row Bits */
+#define AT91_SDRAMC_NR_11 (0 << 2)
+#define AT91_SDRAMC_NR_12 (1 << 2)
+#define AT91_SDRAMC_NR_13 (2 << 2)
+#define AT91_SDRAMC_NB (1 << 4) /* Number of Banks */
+#define AT91_SDRAMC_NB_2 (0 << 4)
+#define AT91_SDRAMC_NB_4 (1 << 4)
+#define AT91_SDRAMC_CAS (3 << 5) /* CAS Latency */
+#define AT91_SDRAMC_CAS_1 (1 << 5)
+#define AT91_SDRAMC_CAS_2 (2 << 5)
+#define AT91_SDRAMC_CAS_3 (3 << 5)
+#define AT91_SDRAMC_DBW (1 << 7) /* Data Bus Width */
+#define AT91_SDRAMC_DBW_32 (0 << 7)
+#define AT91_SDRAMC_DBW_16 (1 << 7)
+#define AT91_SDRAMC_TWR (0xf << 8) /* Write Recovery Delay */
+#define AT91_SDRAMC_TRC (0xf << 12) /* Row Cycle Delay */
+#define AT91_SDRAMC_TRP (0xf << 16) /* Row Precharge Delay */
+#define AT91_SDRAMC_TRCD (0xf << 20) /* Row to Column Delay */
+#define AT91_SDRAMC_TRAS (0xf << 24) /* Active to Precharge Delay */
+#define AT91_SDRAMC_TXSR (0xf << 28) /* Exit Self Refresh to Active Delay */
+
+#define AT91_SDRAMC_LPR 0x10 /* SDRAM Controller Low Power Register */
+#define AT91_SDRAMC_LPCB (3 << 0) /* Low-power Configurations */
+#define AT91_SDRAMC_LPCB_DISABLE 0
+#define AT91_SDRAMC_LPCB_SELF_REFRESH 1
+#define AT91_SDRAMC_LPCB_POWER_DOWN 2
+#define AT91_SDRAMC_LPCB_DEEP_POWER_DOWN 3
+#define AT91_SDRAMC_PASR (7 << 4) /* Partial Array Self Refresh */
+#define AT91_SDRAMC_TCSR (3 << 8) /* Temperature Compensated Self Refresh */
+#define AT91_SDRAMC_DS (3 << 10) /* Drive Strength */
+#define AT91_SDRAMC_TIMEOUT (3 << 12) /* Time to define when Low Power Mode is enabled */
+#define AT91_SDRAMC_TIMEOUT_0_CLK_CYCLES (0 << 12)
+#define AT91_SDRAMC_TIMEOUT_64_CLK_CYCLES (1 << 12)
+#define AT91_SDRAMC_TIMEOUT_128_CLK_CYCLES (2 << 12)
+
+#define AT91_SDRAMC_IER 0x14 /* SDRAM Controller Interrupt Enable Register */
+#define AT91_SDRAMC_IDR 0x18 /* SDRAM Controller Interrupt Disable Register */
+#define AT91_SDRAMC_IMR 0x1C /* SDRAM Controller Interrupt Mask Register */
+#define AT91_SDRAMC_ISR 0x20 /* SDRAM Controller Interrupt Status Register */
+#define AT91_SDRAMC_RES (1 << 0) /* Refresh Error Status */
+
+#define AT91_SDRAMC_MDR 0x24 /* SDRAM Memory Device Register */
+#define AT91_SDRAMC_MD (3 << 0) /* Memory Device Type */
+#define AT91_SDRAMC_MD_SDRAM 0
+#define AT91_SDRAMC_MD_LOW_POWER_SDRAM 1
+
+#endif
diff --git a/include/soc/at91/atmel-secumod.h b/include/soc/at91/atmel-secumod.h
new file mode 100644
index 000000000..8dbdafe0a
--- /dev/null
+++ b/include/soc/at91/atmel-secumod.h
@@ -0,0 +1,16 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Atmel Security Module register offsets and bit definitions.
+ *
+ * Copyright (C) 2016 Atmel
+ *
+ * Author: Alexandre Belloni <alexandre.belloni@free-electrons.com>
+ */
+
+#ifndef _LINUX_SOC_AT91_ATMEL_SECUMOD_H
+#define _LINUX_SOC_AT91_ATMEL_SECUMOD_H
+
+#define AT91_SECUMOD_RAMRDY 0x14
+#define AT91_SECUMOD_RAMRDY_READY BIT(0)
+
+#endif /* _LINUX_SOC_AT91_ATMEL_SECUMOD_H */
diff --git a/include/soc/at91/atmel-sfr.h b/include/soc/at91/atmel-sfr.h
new file mode 100644
index 000000000..c71c0318b
--- /dev/null
+++ b/include/soc/at91/atmel-sfr.h
@@ -0,0 +1,51 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Atmel SFR (Special Function Registers) register offsets and bit definitions.
+ *
+ * Copyright (C) 2016 Atmel
+ *
+ * Author: Ludovic Desroches <ludovic.desroches@atmel.com>
+ */
+
+#ifndef _LINUX_MFD_SYSCON_ATMEL_SFR_H
+#define _LINUX_MFD_SYSCON_ATMEL_SFR_H
+
+#define AT91_SFR_DDRCFG 0x04 /* DDR Configuration Register */
+#define AT91_SFR_CCFG_EBICSA 0x04 /* EBI Chip Select Register */
+/* 0x08 ~ 0x0c: Reserved */
+#define AT91_SFR_OHCIICR 0x10 /* OHCI INT Configuration Register */
+#define AT91_SFR_OHCIISR 0x14 /* OHCI INT Status Register */
+#define AT91_SFR_UTMICKTRIM 0x30 /* UTMI Clock Trimming Register */
+#define AT91_SFR_UTMISWAP 0x3c /* UTMI DP/DM Pin Swapping Register */
+#define AT91_SFR_LS 0x7c /* Light Sleep Register */
+#define AT91_SFR_I2SCLKSEL 0x90 /* I2SC Register */
+#define AT91_SFR_WPMR 0xe4 /* Write Protection Mode Register */
+
+/* Field definitions */
+#define AT91_SFR_CCFG_EBI_CSA(cs, val) ((val) << (cs))
+#define AT91_SFR_CCFG_EBI_DBPUC BIT(8)
+#define AT91_SFR_CCFG_EBI_DBPDC BIT(9)
+#define AT91_SFR_CCFG_EBI_DRIVE BIT(17)
+#define AT91_SFR_CCFG_NFD0_ON_D16 BIT(24)
+#define AT91_SFR_CCFG_DDR_MP_EN BIT(25)
+
+#define AT91_SFR_OHCIICR_RES(x) BIT(x)
+#define AT91_SFR_OHCIICR_ARIE BIT(4)
+#define AT91_SFR_OHCIICR_APPSTART BIT(5)
+#define AT91_SFR_OHCIICR_USB_SUSP(x) BIT(8 + (x))
+#define AT91_SFR_OHCIICR_UDPPUDIS BIT(23)
+#define AT91_OHCIICR_USB_SUSPEND GENMASK(10, 8)
+
+#define AT91_SFR_OHCIISR_RIS(x) BIT(x)
+
+#define AT91_UTMICKTRIM_FREQ GENMASK(1, 0)
+
+#define AT91_SFR_UTMISWAP_PORT(x) BIT(x)
+
+#define AT91_SFR_LS_VALUE(x) BIT(x)
+#define AT91_SFR_LS_MEM_POWER_GATING_ULP1_EN BIT(16)
+
+#define AT91_SFR_WPMR_WPEN BIT(0)
+#define AT91_SFR_WPMR_WPKEY_MASK GENMASK(31, 8)
+
+#endif /* _LINUX_MFD_SYSCON_ATMEL_SFR_H */
diff --git a/include/soc/at91/atmel_tcb.h b/include/soc/at91/atmel_tcb.h
new file mode 100644
index 000000000..1d7071dc0
--- /dev/null
+++ b/include/soc/at91/atmel_tcb.h
@@ -0,0 +1,275 @@
+/*
+ * Timer/Counter Unit (TC) registers.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef __SOC_ATMEL_TCB_H
+#define __SOC_ATMEL_TCB_H
+
+#include <linux/compiler.h>
+#include <linux/list.h>
+
+/*
+ * Many 32-bit Atmel SOCs include one or more TC blocks, each of which holds
+ * three general-purpose 16-bit timers. These timers share one register bank.
+ * Depending on the SOC, each timer may have its own clock and IRQ, or those
+ * may be shared by the whole TC block.
+ *
+ * These TC blocks may have up to nine external pins: TCLK0..2 signals for
+ * clocks or clock gates, and per-timer TIOA and TIOB signals used for PWM
+ * or triggering. Those pins need to be set up for use with the TC block,
+ * else they will be used as GPIOs or for a different controller.
+ *
+ * Although we expect each TC block to have a platform_device node, those
+ * nodes are not what drivers bind to. Instead, they ask for a specific
+ * TC block, by number ... which is a common approach on systems with many
+ * timers. Then they use clk_get() and platform_get_irq() to get clock and
+ * IRQ resources.
+ */
+
+struct clk;
+
+/**
+ * struct atmel_tcb_config - SoC data for a Timer/Counter Block
+ * @counter_width: size in bits of a timer counter register
+ * @has_gclk: boolean indicating if a timer counter has a generic clock
+ * @has_qdec: boolean indicating if a timer counter has a quadrature
+ * decoder.
+ */
+struct atmel_tcb_config {
+ size_t counter_width;
+ bool has_gclk;
+ bool has_qdec;
+};
+
+/**
+ * struct atmel_tc - information about a Timer/Counter Block
+ * @pdev: physical device
+ * @regs: mapping through which the I/O registers can be accessed
+ * @id: block id
+ * @tcb_config: configuration data from SoC
+ * @irq: irq for each of the three channels
+ * @clk: internal clock source for each of the three channels
+ * @node: list node, for tclib internal use
+ * @allocated: if already used, for tclib internal use
+ *
+ * On some platforms, each TC channel has its own clocks and IRQs,
+ * while on others, all TC channels share the same clock and IRQ.
+ * Drivers should clk_enable() all the clocks they need even though
+ * all the entries in @clk may point to the same physical clock.
+ * Likewise, drivers should request irqs independently for each
+ * channel, but they must use IRQF_SHARED in case some of the entries
+ * in @irq are actually the same IRQ.
+ */
+struct atmel_tc {
+ struct platform_device *pdev;
+ void __iomem *regs;
+ int id;
+ const struct atmel_tcb_config *tcb_config;
+ int irq[3];
+ struct clk *clk[3];
+ struct clk *slow_clk;
+ struct list_head node;
+ bool allocated;
+};
+
+extern struct atmel_tc *atmel_tc_alloc(unsigned block);
+extern void atmel_tc_free(struct atmel_tc *tc);
+
+/* platform-specific ATMEL_TC_TIMER_CLOCKx divisors (0 means 32KiHz) */
+extern const u8 atmel_tc_divisors[5];
+
+
+/*
+ * Two registers have block-wide controls. These are: configuring the three
+ * "external" clocks (or event sources) used by the timer channels; and
+ * synchronizing the timers by resetting them all at once.
+ *
+ * "External" can mean "external to chip" using the TCLK0, TCLK1, or TCLK2
+ * signals. Or, it can mean "external to timer", using the TIOA output from
+ * one of the other two timers that's being run in waveform mode.
+ */
+
+#define ATMEL_TC_BCR 0xc0 /* TC Block Control Register */
+#define ATMEL_TC_SYNC (1 << 0) /* synchronize timers */
+
+#define ATMEL_TC_BMR 0xc4 /* TC Block Mode Register */
+#define ATMEL_TC_TC0XC0S (3 << 0) /* external clock 0 source */
+#define ATMEL_TC_TC0XC0S_TCLK0 (0 << 0)
+#define ATMEL_TC_TC0XC0S_NONE (1 << 0)
+#define ATMEL_TC_TC0XC0S_TIOA1 (2 << 0)
+#define ATMEL_TC_TC0XC0S_TIOA2 (3 << 0)
+#define ATMEL_TC_TC1XC1S (3 << 2) /* external clock 1 source */
+#define ATMEL_TC_TC1XC1S_TCLK1 (0 << 2)
+#define ATMEL_TC_TC1XC1S_NONE (1 << 2)
+#define ATMEL_TC_TC1XC1S_TIOA0 (2 << 2)
+#define ATMEL_TC_TC1XC1S_TIOA2 (3 << 2)
+#define ATMEL_TC_TC2XC2S (3 << 4) /* external clock 2 source */
+#define ATMEL_TC_TC2XC2S_TCLK2 (0 << 4)
+#define ATMEL_TC_TC2XC2S_NONE (1 << 4)
+#define ATMEL_TC_TC2XC2S_TIOA0 (2 << 4)
+#define ATMEL_TC_TC2XC2S_TIOA1 (3 << 4)
+
+
+/*
+ * Each TC block has three "channels", each with one counter and controls.
+ *
+ * Note that the semantics of ATMEL_TC_TIMER_CLOCKx (input clock selection
+ * when it's not "external") is silicon-specific. AT91 platforms use one
+ * set of definitions; AVR32 platforms use a different set. Don't hard-wire
+ * such knowledge into your code, use the global "atmel_tc_divisors" ...
+ * where index N is the divisor for clock N+1, else zero to indicate it uses
+ * the 32 KiHz clock.
+ *
+ * The timers can be chained in various ways, and operated in "waveform"
+ * generation mode (including PWM) or "capture" mode (to time events). In
+ * both modes, behavior can be configured in many ways.
+ *
+ * Each timer has two I/O pins, TIOA and TIOB. Waveform mode uses TIOA as a
+ * PWM output, and TIOB as either another PWM or as a trigger. Capture mode
+ * uses them only as inputs.
+ */
+#define ATMEL_TC_CHAN(idx) ((idx)*0x40)
+#define ATMEL_TC_REG(idx, reg) (ATMEL_TC_CHAN(idx) + ATMEL_TC_ ## reg)
+
+#define ATMEL_TC_CCR 0x00 /* Channel Control Register */
+#define ATMEL_TC_CLKEN (1 << 0) /* clock enable */
+#define ATMEL_TC_CLKDIS (1 << 1) /* clock disable */
+#define ATMEL_TC_SWTRG (1 << 2) /* software trigger */
+
+#define ATMEL_TC_CMR 0x04 /* Channel Mode Register */
+
+/* Both modes share some CMR bits */
+#define ATMEL_TC_TCCLKS (7 << 0) /* clock source */
+#define ATMEL_TC_TIMER_CLOCK1 (0 << 0)
+#define ATMEL_TC_TIMER_CLOCK2 (1 << 0)
+#define ATMEL_TC_TIMER_CLOCK3 (2 << 0)
+#define ATMEL_TC_TIMER_CLOCK4 (3 << 0)
+#define ATMEL_TC_TIMER_CLOCK5 (4 << 0)
+#define ATMEL_TC_XC0 (5 << 0)
+#define ATMEL_TC_XC1 (6 << 0)
+#define ATMEL_TC_XC2 (7 << 0)
+#define ATMEL_TC_CLKI (1 << 3) /* clock invert */
+#define ATMEL_TC_BURST (3 << 4) /* clock gating */
+#define ATMEL_TC_GATE_NONE (0 << 4)
+#define ATMEL_TC_GATE_XC0 (1 << 4)
+#define ATMEL_TC_GATE_XC1 (2 << 4)
+#define ATMEL_TC_GATE_XC2 (3 << 4)
+#define ATMEL_TC_WAVE (1 << 15) /* true = Waveform mode */
+
+/* CAPTURE mode CMR bits */
+#define ATMEL_TC_LDBSTOP (1 << 6) /* counter stops on RB load */
+#define ATMEL_TC_LDBDIS (1 << 7) /* counter disable on RB load */
+#define ATMEL_TC_ETRGEDG (3 << 8) /* external trigger edge */
+#define ATMEL_TC_ETRGEDG_NONE (0 << 8)
+#define ATMEL_TC_ETRGEDG_RISING (1 << 8)
+#define ATMEL_TC_ETRGEDG_FALLING (2 << 8)
+#define ATMEL_TC_ETRGEDG_BOTH (3 << 8)
+#define ATMEL_TC_ABETRG (1 << 10) /* external trigger is TIOA? */
+#define ATMEL_TC_CPCTRG (1 << 14) /* RC compare trigger enable */
+#define ATMEL_TC_LDRA (3 << 16) /* RA loading edge (of TIOA) */
+#define ATMEL_TC_LDRA_NONE (0 << 16)
+#define ATMEL_TC_LDRA_RISING (1 << 16)
+#define ATMEL_TC_LDRA_FALLING (2 << 16)
+#define ATMEL_TC_LDRA_BOTH (3 << 16)
+#define ATMEL_TC_LDRB (3 << 18) /* RB loading edge (of TIOA) */
+#define ATMEL_TC_LDRB_NONE (0 << 18)
+#define ATMEL_TC_LDRB_RISING (1 << 18)
+#define ATMEL_TC_LDRB_FALLING (2 << 18)
+#define ATMEL_TC_LDRB_BOTH (3 << 18)
+
+/* WAVEFORM mode CMR bits */
+#define ATMEL_TC_CPCSTOP (1 << 6) /* RC compare stops counter */
+#define ATMEL_TC_CPCDIS (1 << 7) /* RC compare disables counter */
+#define ATMEL_TC_EEVTEDG (3 << 8) /* external event edge */
+#define ATMEL_TC_EEVTEDG_NONE (0 << 8)
+#define ATMEL_TC_EEVTEDG_RISING (1 << 8)
+#define ATMEL_TC_EEVTEDG_FALLING (2 << 8)
+#define ATMEL_TC_EEVTEDG_BOTH (3 << 8)
+#define ATMEL_TC_EEVT (3 << 10) /* external event source */
+#define ATMEL_TC_EEVT_TIOB (0 << 10)
+#define ATMEL_TC_EEVT_XC0 (1 << 10)
+#define ATMEL_TC_EEVT_XC1 (2 << 10)
+#define ATMEL_TC_EEVT_XC2 (3 << 10)
+#define ATMEL_TC_ENETRG (1 << 12) /* external event is trigger */
+#define ATMEL_TC_WAVESEL (3 << 13) /* waveform type */
+#define ATMEL_TC_WAVESEL_UP (0 << 13)
+#define ATMEL_TC_WAVESEL_UPDOWN (1 << 13)
+#define ATMEL_TC_WAVESEL_UP_AUTO (2 << 13)
+#define ATMEL_TC_WAVESEL_UPDOWN_AUTO (3 << 13)
+#define ATMEL_TC_ACPA (3 << 16) /* RA compare changes TIOA */
+#define ATMEL_TC_ACPA_NONE (0 << 16)
+#define ATMEL_TC_ACPA_SET (1 << 16)
+#define ATMEL_TC_ACPA_CLEAR (2 << 16)
+#define ATMEL_TC_ACPA_TOGGLE (3 << 16)
+#define ATMEL_TC_ACPC (3 << 18) /* RC compare changes TIOA */
+#define ATMEL_TC_ACPC_NONE (0 << 18)
+#define ATMEL_TC_ACPC_SET (1 << 18)
+#define ATMEL_TC_ACPC_CLEAR (2 << 18)
+#define ATMEL_TC_ACPC_TOGGLE (3 << 18)
+#define ATMEL_TC_AEEVT (3 << 20) /* external event changes TIOA */
+#define ATMEL_TC_AEEVT_NONE (0 << 20)
+#define ATMEL_TC_AEEVT_SET (1 << 20)
+#define ATMEL_TC_AEEVT_CLEAR (2 << 20)
+#define ATMEL_TC_AEEVT_TOGGLE (3 << 20)
+#define ATMEL_TC_ASWTRG (3 << 22) /* software trigger changes TIOA */
+#define ATMEL_TC_ASWTRG_NONE (0 << 22)
+#define ATMEL_TC_ASWTRG_SET (1 << 22)
+#define ATMEL_TC_ASWTRG_CLEAR (2 << 22)
+#define ATMEL_TC_ASWTRG_TOGGLE (3 << 22)
+#define ATMEL_TC_BCPB (3 << 24) /* RB compare changes TIOB */
+#define ATMEL_TC_BCPB_NONE (0 << 24)
+#define ATMEL_TC_BCPB_SET (1 << 24)
+#define ATMEL_TC_BCPB_CLEAR (2 << 24)
+#define ATMEL_TC_BCPB_TOGGLE (3 << 24)
+#define ATMEL_TC_BCPC (3 << 26) /* RC compare changes TIOB */
+#define ATMEL_TC_BCPC_NONE (0 << 26)
+#define ATMEL_TC_BCPC_SET (1 << 26)
+#define ATMEL_TC_BCPC_CLEAR (2 << 26)
+#define ATMEL_TC_BCPC_TOGGLE (3 << 26)
+#define ATMEL_TC_BEEVT (3 << 28) /* external event changes TIOB */
+#define ATMEL_TC_BEEVT_NONE (0 << 28)
+#define ATMEL_TC_BEEVT_SET (1 << 28)
+#define ATMEL_TC_BEEVT_CLEAR (2 << 28)
+#define ATMEL_TC_BEEVT_TOGGLE (3 << 28)
+#define ATMEL_TC_BSWTRG (3 << 30) /* software trigger changes TIOB */
+#define ATMEL_TC_BSWTRG_NONE (0 << 30)
+#define ATMEL_TC_BSWTRG_SET (1 << 30)
+#define ATMEL_TC_BSWTRG_CLEAR (2 << 30)
+#define ATMEL_TC_BSWTRG_TOGGLE (3 << 30)
+
+#define ATMEL_TC_CV 0x10 /* counter Value */
+#define ATMEL_TC_RA 0x14 /* register A */
+#define ATMEL_TC_RB 0x18 /* register B */
+#define ATMEL_TC_RC 0x1c /* register C */
+
+#define ATMEL_TC_SR 0x20 /* status (read-only) */
+/* Status-only flags */
+#define ATMEL_TC_CLKSTA (1 << 16) /* clock enabled */
+#define ATMEL_TC_MTIOA (1 << 17) /* TIOA mirror */
+#define ATMEL_TC_MTIOB (1 << 18) /* TIOB mirror */
+
+#define ATMEL_TC_IER 0x24 /* interrupt enable (write-only) */
+#define ATMEL_TC_IDR 0x28 /* interrupt disable (write-only) */
+#define ATMEL_TC_IMR 0x2c /* interrupt mask (read-only) */
+
+/* Status and IRQ flags */
+#define ATMEL_TC_COVFS (1 << 0) /* counter overflow */
+#define ATMEL_TC_LOVRS (1 << 1) /* load overrun */
+#define ATMEL_TC_CPAS (1 << 2) /* RA compare */
+#define ATMEL_TC_CPBS (1 << 3) /* RB compare */
+#define ATMEL_TC_CPCS (1 << 4) /* RC compare */
+#define ATMEL_TC_LDRAS (1 << 5) /* RA loading */
+#define ATMEL_TC_LDRBS (1 << 6) /* RB loading */
+#define ATMEL_TC_ETRGS (1 << 7) /* external trigger */
+#define ATMEL_TC_ALL_IRQ (ATMEL_TC_COVFS | ATMEL_TC_LOVRS | \
+ ATMEL_TC_CPAS | ATMEL_TC_CPBS | \
+ ATMEL_TC_CPCS | ATMEL_TC_LDRAS | \
+ ATMEL_TC_LDRBS | ATMEL_TC_ETRGS) \
+ /* all IRQs */
+
+#endif