/* * Analog Devices PPI header file * * Copyright (c) 2011 Analog Devices Inc. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #ifndef _PPI_H_ #define _PPI_H_ #include #include #include /* EPPI */ #ifdef EPPI_EN #define PORT_EN EPPI_EN #define PORT_DIR EPPI_DIR #define DMA32 0 #define PACK_EN PACKEN #endif /* EPPI3 */ #ifdef EPPI0_CTL2 #define PORT_EN EPPI_CTL_EN #define PORT_DIR EPPI_CTL_DIR #define PACK_EN EPPI_CTL_PACKEN #define DMA32 0 #define DLEN_8 EPPI_CTL_DLEN08 #define DLEN_16 EPPI_CTL_DLEN16 #endif struct ppi_if; struct ppi_params { u32 width; /* width in pixels */ u32 height; /* height in lines */ u32 hdelay; /* delay after the HSYNC in pixels */ u32 vdelay; /* delay after the VSYNC in lines */ u32 line; /* total pixels per line */ u32 frame; /* total lines per frame */ u32 hsync; /* HSYNC length in pixels */ u32 vsync; /* VSYNC length in lines */ int bpp; /* bits per pixel */ int dlen; /* data length for ppi in bits */ u32 ppi_control; /* ppi configuration */ u32 int_mask; /* interrupt mask */ }; struct ppi_ops { int (*attach_irq)(struct ppi_if *ppi, irq_handler_t handler); void (*detach_irq)(struct ppi_if *ppi); int (*start)(struct ppi_if *ppi); int (*stop)(struct ppi_if *ppi); int (*set_params)(struct ppi_if *ppi, struct ppi_params *params); void (*update_addr)(struct ppi_if *ppi, unsigned long addr); }; enum ppi_type { PPI_TYPE_PPI, PPI_TYPE_EPPI, PPI_TYPE_EPPI3, }; struct ppi_info { enum ppi_type type; int dma_ch; int irq_err; void __iomem *base; const unsigned short *pin_req; }; struct ppi_if { struct device *dev; unsigned long ppi_control; const struct ppi_ops *ops; const struct ppi_info *info; bool err_int; /* if we need request error interrupt */ bool err; /* if ppi has fifo error */ void *priv; }; struct ppi_if *ppi_create_instance(struct platform_device *pdev, const struct ppi_info *info); void ppi_delete_instance(struct ppi_if *ppi); #endif ption>
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authorJohan Hovold <johan@kernel.org>2017-01-30 11:26:38 +0100
committerJiri Kosina <jkosina@suse.cz>2017-01-31 12:59:32 +0100
commit7a7b5df84b6b4e5d599c7289526eed96541a0654 (patch)
treecf7514c7ddf4410fe37ca9099a2785e1cf08fa7d /include/dt-bindings/memory
parent877a021e08ccb6434718c0cc781fdf943c884cc0 (diff)
HID: cp2112: fix sleep-while-atomic
A recent commit fixing DMA-buffers on stack added a shared transfer buffer protected by a spinlock. This is broken as the USB HID request callbacks can sleep. Fix this up by replacing the spinlock with a mutex. Fixes: 1ffb3c40ffb5 ("HID: cp2112: make transfer buffers DMA capable") Cc: stable <stable@vger.kernel.org> # 4.9 Signed-off-by: Johan Hovold <johan@kernel.org> Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'include/dt-bindings/memory')