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authorLinus Torvalds <torvalds@linux-foundation.org>2026-08-24 08:46:03 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2026-08-24 08:46:03 -0700
commitcf9610f9116d55c5a66ef9f1faecacabd93a9322 (patch)
tree757a3d280760c654767631cab5ad8af2d86d1848 /drivers/dma/ste_dma40.h
downloadlinux-stable-cf9610f9116d55c5a66ef9f1faecacabd93a9322.tar.gz
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Merge tag 'pinctrl-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrlgrafted
Pull pin control updates from Linus Walleij: "Core changes: - Use the non-blocking mux_state_try_select() in the generic MUX pin control back-end - Free pin maps on pinctrl_generic_to_map() failure in the core helpers New hardware pin control: - Qualcomm Maili TLMM SoC, PMG1110 PMIC, and Eliza LPASS LPI TLMM SoC (this is for the low power audio, LPASS = Low Power Audio SubSystem portions) - Upboard support on top of the Intel pin controller - Apple T6030 and T6031 support (just compatible strings) - Samsung Exynos 8855 SoC - Mediatek MT6858 SoC - Rockchip RK3308B and RV1106 SoCs - Airoha EN7523 and AN7563 SoCs Improvements: - Qualcomm TLMM GPIOs are unconditionally marked as wakeup capable - Qualcomm improvements on top of the Qualcomm PDC (power domain controller) irqchip improvements from tglx:s tree - Qualcomm IPQ806x and IPQ9650 non-urgent pin grop fixups - The NPCM8xx driver has been put into shape fixing many pin and group definitions - Some non-urgent Tegra 264 pin assignments are fixed up - Some non-urgent fixups to Airoha AN7581 and AN7583 registers and pin assignments, missing features etc" * tag 'pinctrl-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (130 commits) dt-bindings: pinctrl: Convert TI DA850 pupd to DT schema pinctrl: meson: sync some modify from A4 pinctrl: meson: a4: Add input enable pin configuration pinctrl: realtek: rtd1625: remove unused group name spdif_sel pinctrl: realtek: rtd1625: fix base_bit for VE4 GPIO 13 dt-bindings: pinctrl: microchip,pic32mzda-pinctrl: Convert to DT schema Revert "Merge branch 'ib-rsk7204' into devel" pinctrl: rockchip: Add RV1106 pinctrl support dt-bindings: pinctrl: rockchip: Add RV1106 compatible pinctrl: rockchip: Decode drive strength in the get function pinctrl: fix PINCTRL_GENERIC_MUX not always being selectable pinctrl: airoha: add support of an7563 SoC dt-bindings: pinctrl: airoha: add support of an7563 pin controller pinctrl: airoha: try to find chip scu node by phandle first pinctrl: airoha: add support of en7523 SoC dt-bindings: pinctrl: airoha: add support of en7523 pin controller pinctrl: airoha: an7583: add support for olt pinmux pinctrl: airoha: an7583: add support for pon_alt pinmux pinctrl: airoha: an7583: add support for npu_uart pinmux dt-bindings: pinctrl: airoha: an7583: add missed features ...
Diffstat (limited to 'drivers/dma/ste_dma40.h')
-rw-r--r--drivers/dma/ste_dma40.h110
1 files changed, 110 insertions, 0 deletions
diff --git a/drivers/dma/ste_dma40.h b/drivers/dma/ste_dma40.h
new file mode 100644
index 000000000..a90c786ac
--- /dev/null
+++ b/drivers/dma/ste_dma40.h
@@ -0,0 +1,110 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef STE_DMA40_H
+#define STE_DMA40_H
+
+/*
+ * Maximum size for a single dma descriptor
+ * Size is limited to 16 bits.
+ * Size is in the units of addr-widths (1,2,4,8 bytes)
+ * Larger transfers will be split up to multiple linked desc
+ */
+#define STEDMA40_MAX_SEG_SIZE 0xFFFF
+
+/* dev types for memcpy */
+#define STEDMA40_DEV_DST_MEMORY (-1)
+#define STEDMA40_DEV_SRC_MEMORY (-1)
+
+enum stedma40_mode {
+ STEDMA40_MODE_LOGICAL = 0,
+ STEDMA40_MODE_PHYSICAL,
+ STEDMA40_MODE_OPERATION,
+};
+
+enum stedma40_mode_opt {
+ STEDMA40_PCHAN_BASIC_MODE = 0,
+ STEDMA40_LCHAN_SRC_LOG_DST_LOG = 0,
+ STEDMA40_PCHAN_MODULO_MODE,
+ STEDMA40_PCHAN_DOUBLE_DST_MODE,
+ STEDMA40_LCHAN_SRC_PHY_DST_LOG,
+ STEDMA40_LCHAN_SRC_LOG_DST_PHY,
+};
+
+#define STEDMA40_ESIZE_8_BIT 0x0
+#define STEDMA40_ESIZE_16_BIT 0x1
+#define STEDMA40_ESIZE_32_BIT 0x2
+#define STEDMA40_ESIZE_64_BIT 0x3
+
+/* The value 4 indicates that PEN-reg shall be set to 0 */
+#define STEDMA40_PSIZE_PHY_1 0x4
+#define STEDMA40_PSIZE_PHY_2 0x0
+#define STEDMA40_PSIZE_PHY_4 0x1
+#define STEDMA40_PSIZE_PHY_8 0x2
+#define STEDMA40_PSIZE_PHY_16 0x3
+
+/*
+ * The number of elements differ in logical and
+ * physical mode
+ */
+#define STEDMA40_PSIZE_LOG_1 STEDMA40_PSIZE_PHY_2
+#define STEDMA40_PSIZE_LOG_4 STEDMA40_PSIZE_PHY_4
+#define STEDMA40_PSIZE_LOG_8 STEDMA40_PSIZE_PHY_8
+#define STEDMA40_PSIZE_LOG_16 STEDMA40_PSIZE_PHY_16
+
+/* Maximum number of possible physical channels */
+#define STEDMA40_MAX_PHYS 32
+
+enum stedma40_flow_ctrl {
+ STEDMA40_NO_FLOW_CTRL,
+ STEDMA40_FLOW_CTRL,
+};
+
+/**
+ * struct stedma40_half_channel_info - dst/src channel configuration
+ *
+ * @big_endian: true if the src/dst should be read as big endian
+ * @data_width: Data width of the src/dst hardware
+ * @p_size: Burst size
+ * @flow_ctrl: Flow control on/off.
+ */
+struct stedma40_half_channel_info {
+ bool big_endian;
+ enum dma_slave_buswidth data_width;
+ int psize;
+ enum stedma40_flow_ctrl flow_ctrl;
+};
+
+/**
+ * struct stedma40_chan_cfg - Structure to be filled by client drivers.
+ *
+ * @dir: MEM 2 MEM, PERIPH 2 MEM , MEM 2 PERIPH, PERIPH 2 PERIPH
+ * @high_priority: true if high-priority
+ * @realtime: true if realtime mode is to be enabled. Only available on DMA40
+ * version 3+, i.e DB8500v2+
+ * @mode: channel mode: physical, logical, or operation
+ * @mode_opt: options for the chosen channel mode
+ * @dev_type: src/dst device type (driver uses dir to figure out which)
+ * @src_info: Parameters for dst half channel
+ * @dst_info: Parameters for dst half channel
+ * @use_fixed_channel: if true, use physical channel specified by phy_channel
+ * @phy_channel: physical channel to use, only if use_fixed_channel is true
+ *
+ * This structure has to be filled by the client drivers.
+ * It is recommended to do all dma configurations for clients in the machine.
+ *
+ */
+struct stedma40_chan_cfg {
+ enum dma_transfer_direction dir;
+ bool high_priority;
+ bool realtime;
+ enum stedma40_mode mode;
+ enum stedma40_mode_opt mode_opt;
+ int dev_type;
+ struct stedma40_half_channel_info src_info;
+ struct stedma40_half_channel_info dst_info;
+
+ bool use_fixed_channel;
+ int phy_channel;
+};
+
+#endif /* STE_DMA40_H */