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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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baef653a50
This patch is based on the discussion of a previous patch to fix an issue where the omap2430 musb driver is not working for N9/N950. Moving all the interrupt handling to the devices. Avoids inclusion of generic interrupt and breakage due to sometimes misleading CONFIG options. This makes sure usb always works if on of the subdrivers is chosen. Tested on Nokia N9/N950. Partially clean up CONFIG_SOC_OMAP3430 which is not necessary in the cases where I removed it. Also helps with the removal work of those options that Tony Lindgren predicted would happen at some point. Signed-off-by: Philippe De Swert <philippe.deswert@jollamobile.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
162 lines
4.9 KiB
C
162 lines
4.9 KiB
C
/*
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* MUSB OTG driver - support for Mentor's DMA controller
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*
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* Copyright 2005 Mentor Graphics Corporation
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* Copyright (C) 2005-2007 by Texas Instruments
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* 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., 51 Franklin St, Fifth Floor, Boston, MA
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* 02110-1301 USA
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*
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* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
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* NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#ifndef CONFIG_BLACKFIN
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#define MUSB_HSDMA_BASE 0x200
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#define MUSB_HSDMA_INTR (MUSB_HSDMA_BASE + 0)
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#define MUSB_HSDMA_CONTROL 0x4
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#define MUSB_HSDMA_ADDRESS 0x8
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#define MUSB_HSDMA_COUNT 0xc
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#define MUSB_HSDMA_CHANNEL_OFFSET(_bchannel, _offset) \
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(MUSB_HSDMA_BASE + (_bchannel << 4) + _offset)
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#define musb_read_hsdma_addr(mbase, bchannel) \
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musb_readl(mbase, \
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MUSB_HSDMA_CHANNEL_OFFSET(bchannel, MUSB_HSDMA_ADDRESS))
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#define musb_write_hsdma_addr(mbase, bchannel, addr) \
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musb_writel(mbase, \
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MUSB_HSDMA_CHANNEL_OFFSET(bchannel, MUSB_HSDMA_ADDRESS), \
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addr)
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#define musb_read_hsdma_count(mbase, bchannel) \
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musb_readl(mbase, \
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MUSB_HSDMA_CHANNEL_OFFSET(bchannel, MUSB_HSDMA_COUNT))
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#define musb_write_hsdma_count(mbase, bchannel, len) \
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musb_writel(mbase, \
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MUSB_HSDMA_CHANNEL_OFFSET(bchannel, MUSB_HSDMA_COUNT), \
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len)
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#else
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#define MUSB_HSDMA_BASE 0x400
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#define MUSB_HSDMA_INTR (MUSB_HSDMA_BASE + 0)
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#define MUSB_HSDMA_CONTROL 0x04
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#define MUSB_HSDMA_ADDR_LOW 0x08
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#define MUSB_HSDMA_ADDR_HIGH 0x0C
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#define MUSB_HSDMA_COUNT_LOW 0x10
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#define MUSB_HSDMA_COUNT_HIGH 0x14
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#define MUSB_HSDMA_CHANNEL_OFFSET(_bchannel, _offset) \
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(MUSB_HSDMA_BASE + (_bchannel * 0x20) + _offset)
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static inline u32 musb_read_hsdma_addr(void __iomem *mbase, u8 bchannel)
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{
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u32 addr = musb_readw(mbase,
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MUSB_HSDMA_CHANNEL_OFFSET(bchannel, MUSB_HSDMA_ADDR_HIGH));
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addr = addr << 16;
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addr |= musb_readw(mbase,
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MUSB_HSDMA_CHANNEL_OFFSET(bchannel, MUSB_HSDMA_ADDR_LOW));
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return addr;
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}
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static inline void musb_write_hsdma_addr(void __iomem *mbase,
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u8 bchannel, dma_addr_t dma_addr)
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{
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musb_writew(mbase,
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MUSB_HSDMA_CHANNEL_OFFSET(bchannel, MUSB_HSDMA_ADDR_LOW),
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dma_addr);
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musb_writew(mbase,
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MUSB_HSDMA_CHANNEL_OFFSET(bchannel, MUSB_HSDMA_ADDR_HIGH),
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(dma_addr >> 16));
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}
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static inline u32 musb_read_hsdma_count(void __iomem *mbase, u8 bchannel)
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{
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u32 count = musb_readw(mbase,
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MUSB_HSDMA_CHANNEL_OFFSET(bchannel, MUSB_HSDMA_COUNT_HIGH));
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count = count << 16;
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count |= musb_readw(mbase,
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MUSB_HSDMA_CHANNEL_OFFSET(bchannel, MUSB_HSDMA_COUNT_LOW));
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return count;
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}
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static inline void musb_write_hsdma_count(void __iomem *mbase,
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u8 bchannel, u32 len)
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{
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musb_writew(mbase,
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MUSB_HSDMA_CHANNEL_OFFSET(bchannel, MUSB_HSDMA_COUNT_LOW),len);
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musb_writew(mbase,
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MUSB_HSDMA_CHANNEL_OFFSET(bchannel, MUSB_HSDMA_COUNT_HIGH),
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(len >> 16));
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}
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#endif /* CONFIG_BLACKFIN */
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/* control register (16-bit): */
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#define MUSB_HSDMA_ENABLE_SHIFT 0
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#define MUSB_HSDMA_TRANSMIT_SHIFT 1
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#define MUSB_HSDMA_MODE1_SHIFT 2
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#define MUSB_HSDMA_IRQENABLE_SHIFT 3
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#define MUSB_HSDMA_ENDPOINT_SHIFT 4
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#define MUSB_HSDMA_BUSERROR_SHIFT 8
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#define MUSB_HSDMA_BURSTMODE_SHIFT 9
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#define MUSB_HSDMA_BURSTMODE (3 << MUSB_HSDMA_BURSTMODE_SHIFT)
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#define MUSB_HSDMA_BURSTMODE_UNSPEC 0
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#define MUSB_HSDMA_BURSTMODE_INCR4 1
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#define MUSB_HSDMA_BURSTMODE_INCR8 2
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#define MUSB_HSDMA_BURSTMODE_INCR16 3
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#define MUSB_HSDMA_CHANNELS 8
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struct musb_dma_controller;
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struct musb_dma_channel {
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struct dma_channel channel;
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struct musb_dma_controller *controller;
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u32 start_addr;
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u32 len;
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u16 max_packet_sz;
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u8 idx;
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u8 epnum;
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u8 transmit;
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};
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struct musb_dma_controller {
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struct dma_controller controller;
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struct musb_dma_channel channel[MUSB_HSDMA_CHANNELS];
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void *private_data;
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void __iomem *base;
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u8 channel_count;
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u8 used_channels;
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u8 irq;
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};
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