Merge tag 'omap-for-v4.16/ti-sysc-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/drivers

TI sysc driver updates for v4.16 merge window

We now have gotten ti-sysc driver to the point where it can parse
interconnect target configuration from device tree instead of the
legacy platform data. This series updates the device tree binding
and adds parsing to the driver for quirks and capabilities.

* tag 'omap-for-v4.16/ti-sysc-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  bus: ti-sysc: Add parsing of module capabilities
  bus: ti-sysc: Handle module quirks based dts configuration
  bus: ti-sysc: Detect i2c interconnect target module based on register layout
  bus: ti-sysc: Add register bits for interconnect target modules
  bus: ti-sysc: Make omap_hwmod_sysc_fields into sysc_regbits platform data
  ARM: OMAP2+: Move all omap_hwmod_sysc_fields to omap_hwmod_common_data.c
  ARM: dts: Add generic ti,sysc compatible in addition to the custom ones
  dt-bindings: ti-sysc: Update binding for timers and capabilities

Signed-off-by: Olof Johansson <olof@lixom.net>

2 files changed, 108 insertions, 0 deletions

diff --git a/include/dt-bindings/bus/ti-sysc.h b/include/dt-bindings/bus/ti-sysc.h
new file mode 100644
index 000000000000..2c005376ac0e
--- /dev/null
+++ b/include/dt-bindings/bus/ti-sysc.h
@@ -0,0 +1,22 @@
+/* TI sysc interconnect target module defines */
+
+/* Generic sysc found on omap2 and later, also known as type1 */
+#define SYSC_OMAP2_CLOCKACTIVITY	(3 << 8)
+#define SYSC_OMAP2_EMUFREE		(1 << 5)
+#define SYSC_OMAP2_ENAWAKEUP		(1 << 2)
+#define SYSC_OMAP2_SOFTRESET		(1 << 1)
+#define SYSC_OMAP2_AUTOIDLE		(1 << 0)
+
+/* Generic sysc found on omap4 and later, also known as type2 */
+#define SYSC_OMAP4_DMADISABLE		(1 << 16)
+#define SYSC_OMAP4_FREEEMU		(1 << 1)	/* Also known as EMUFREE */
+#define SYSC_OMAP4_SOFTRESET		(1 << 0)
+
+/* SmartReflex sysc found on 36xx and later */
+#define SYSC_OMAP3_SR_ENAWAKEUP		(1 << 26)
+
+/* SYSCONFIG STANDBYMODE/MIDLEMODE/SIDLEMODE supported by hardware */
+#define SYSC_IDLE_FORCE			0
+#define SYSC_IDLE_NO			1
+#define SYSC_IDLE_SMART			2
+#define SYSC_IDLE_SMART_WKUP		3
diff --git a/include/linux/platform_data/ti-sysc.h b/include/linux/platform_data/ti-sysc.h
new file mode 100644
index 000000000000..1be356330b96
--- /dev/null
+++ b/include/linux/platform_data/ti-sysc.h
@@ -0,0 +1,86 @@
+#ifndef __TI_SYSC_DATA_H__
+#define __TI_SYSC_DATA_H__
+
+enum ti_sysc_module_type {
+	TI_SYSC_OMAP2,
+	TI_SYSC_OMAP2_TIMER,
+	TI_SYSC_OMAP3_SHAM,
+	TI_SYSC_OMAP3_AES,
+	TI_SYSC_OMAP4,
+	TI_SYSC_OMAP4_TIMER,
+	TI_SYSC_OMAP4_SIMPLE,
+	TI_SYSC_OMAP34XX_SR,
+	TI_SYSC_OMAP36XX_SR,
+	TI_SYSC_OMAP4_SR,
+	TI_SYSC_OMAP4_MCASP,
+	TI_SYSC_OMAP4_USB_HOST_FS,
+};
+
+/**
+ * struct sysc_regbits - TI OCP_SYSCONFIG register field offsets
+ * @midle_shift: Offset of the midle bit
+ * @clkact_shift: Offset of the clockactivity bit
+ * @sidle_shift: Offset of the sidle bit
+ * @enwkup_shift: Offset of the enawakeup bit
+ * @srst_shift: Offset of the softreset bit
+ * @autoidle_shift: Offset of the autoidle bit
+ * @dmadisable_shift: Offset of the dmadisable bit
+ * @emufree_shift; Offset of the emufree bit
+ *
+ * Note that 0 is a valid shift, and for ti-sysc.c -ENODEV can be used if a
+ * feature is not available.
+ */
+struct sysc_regbits {
+	s8 midle_shift;
+	s8 clkact_shift;
+	s8 sidle_shift;
+	s8 enwkup_shift;
+	s8 srst_shift;
+	s8 autoidle_shift;
+	s8 dmadisable_shift;
+	s8 emufree_shift;
+};
+
+#define SYSC_QUIRK_RESET_STATUS		BIT(7)
+#define SYSC_QUIRK_NO_IDLE_ON_INIT	BIT(6)
+#define SYSC_QUIRK_NO_RESET_ON_INIT	BIT(5)
+#define SYSC_QUIRK_OPT_CLKS_NEEDED	BIT(4)
+#define SYSC_QUIRK_OPT_CLKS_IN_RESET	BIT(3)
+#define SYSC_QUIRK_16BIT		BIT(2)
+#define SYSC_QUIRK_UNCACHED		BIT(1)
+#define SYSC_QUIRK_USE_CLOCKACT		BIT(0)
+
+#define SYSC_NR_IDLEMODES		4
+
+/**
+ * struct sysc_capabilities - capabilities for an interconnect target module
+ *
+ * @sysc_mask: bitmask of supported SYSCONFIG register bits
+ * @regbits: bitmask of SYSCONFIG register bits
+ * @mod_quirks: bitmask of module specific quirks
+ */
+struct sysc_capabilities {
+	const enum ti_sysc_module_type type;
+	const u32 sysc_mask;
+	const struct sysc_regbits *regbits;
+	const u32 mod_quirks;
+};
+
+/**
+ * struct sysc_config - configuration for an interconnect target module
+ * @sysc_val: configured value for sysc register
+ * @midlemodes: bitmask of supported master idle modes
+ * @sidlemodes: bitmask of supported master idle modes
+ * @srst_udelay: optional delay needed after OCP soft reset
+ * @quirks: bitmask of enabled quirks
+ */
+struct sysc_config {
+	u32 sysc_val;
+	u32 syss_mask;
+	u8 midlemodes;
+	u8 sidlemodes;
+	u8 srst_udelay;
+	u32 quirks;
+};
+
+#endif	/* __TI_SYSC_DATA_H__ */