From d026e9c76aac3632af174cf02d5c94defa5e6026 Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Mon, 24 Nov 2014 11:05:03 -0800 Subject: [PATCH] usb: musb: Change end point selection to use new IO access This allows the endpoints to work when multiple MUSB glue layers are built in. Cc: Fabio Baltieri Cc: Lee Jones Cc: Lars-Peter Clausen Acked-by: Linus Walleij Acked-by: Apelete Seketeli Signed-off-by: Tony Lindgren Signed-off-by: Felipe Balbi --- drivers/usb/musb/am35x.c | 1 + drivers/usb/musb/da8xx.c | 1 + drivers/usb/musb/jz4740.c | 1 + drivers/usb/musb/musb_core.c | 38 +++++++++++++++++++++++++++++++++++- drivers/usb/musb/musb_core.h | 37 +---------------------------------- drivers/usb/musb/musb_dsps.c | 1 + drivers/usb/musb/musb_io.h | 2 ++ drivers/usb/musb/musb_regs.h | 11 ----------- drivers/usb/musb/musbhsdma.c | 7 ++++--- drivers/usb/musb/tusb6010.c | 13 ++++++++++++ drivers/usb/musb/ux500.c | 1 + 11 files changed, 62 insertions(+), 51 deletions(-) diff --git a/drivers/usb/musb/am35x.c b/drivers/usb/musb/am35x.c index 7fc8d47ce18e..220fd4d3b41c 100644 --- a/drivers/usb/musb/am35x.c +++ b/drivers/usb/musb/am35x.c @@ -438,6 +438,7 @@ static void am35x_read_fifo(struct musb_hw_ep *hw_ep, u16 len, u8 *dst) } static const struct musb_platform_ops am35x_ops = { + .quirks = MUSB_INDEXED_EP, .init = am35x_musb_init, .exit = am35x_musb_exit, diff --git a/drivers/usb/musb/da8xx.c b/drivers/usb/musb/da8xx.c index 527c7fe60ece..9a6171300931 100644 --- a/drivers/usb/musb/da8xx.c +++ b/drivers/usb/musb/da8xx.c @@ -458,6 +458,7 @@ static int da8xx_musb_exit(struct musb *musb) } static const struct musb_platform_ops da8xx_ops = { + .quirks = MUSB_INDEXED_EP, .init = da8xx_musb_init, .exit = da8xx_musb_exit, diff --git a/drivers/usb/musb/jz4740.c b/drivers/usb/musb/jz4740.c index d1187290d4e3..40e98747d17f 100644 --- a/drivers/usb/musb/jz4740.c +++ b/drivers/usb/musb/jz4740.c @@ -106,6 +106,7 @@ static int jz4740_musb_exit(struct musb *musb) } static const struct musb_platform_ops jz4740_musb_ops = { + .quirks = MUSB_INDEXED_EP, .init = jz4740_musb_init, .exit = jz4740_musb_exit, }; diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c index 1c1a9a12fdc7..1ff944a07359 100644 --- a/drivers/usb/musb/musb_core.c +++ b/drivers/usb/musb/musb_core.c @@ -229,6 +229,27 @@ static u32 musb_default_fifo_offset(u8 epnum) return 0x20 + (epnum * 4); } +/* "flat" mapping: each endpoint has its own i/o address */ +static void musb_flat_ep_select(void __iomem *mbase, u8 epnum) +{ +} + +static u32 musb_flat_ep_offset(u8 epnum, u16 offset) +{ + return 0x100 + (0x10 * epnum) + offset; +} + +/* "indexed" mapping: INDEX register controls register bank select */ +static void musb_indexed_ep_select(void __iomem *mbase, u8 epnum) +{ + musb_writeb(mbase, MUSB_INDEX, epnum); +} + +static u32 musb_indexed_ep_offset(u8 epnum, u16 offset) +{ + return 0x10 + offset; +} + static u8 musb_default_readb(const void __iomem *addr, unsigned offset) { return __raw_readb(addr + offset); @@ -1537,7 +1558,7 @@ static int musb_core_init(u16 musb_type, struct musb *musb) } #endif - hw_ep->regs = MUSB_EP_OFFSET(i, 0) + mbase; + hw_ep->regs = musb->io.ep_offset(i, 0) + mbase; hw_ep->target_regs = musb_read_target_reg_base(i, mbase); hw_ep->rx_reinit = 1; hw_ep->tx_reinit = 1; @@ -2007,6 +2028,21 @@ musb_init_controller(struct device *dev, int nIrq, void __iomem *ctrl) if (musb->ops->quirks) musb->io.quirks = musb->ops->quirks; + /* At least tusb6010 has it's own offsets.. */ + if (musb->ops->ep_offset) + musb->io.ep_offset = musb->ops->ep_offset; + if (musb->ops->ep_select) + musb->io.ep_select = musb->ops->ep_select; + + /* ..and some devices use indexed offset or flat offset */ + if (musb->io.quirks & MUSB_INDEXED_EP) { + musb->io.ep_offset = musb_indexed_ep_offset; + musb->io.ep_select = musb_indexed_ep_select; + } else { + musb->io.ep_offset = musb_flat_ep_offset; + musb->io.ep_select = musb_flat_ep_select; + } + if (musb->ops->fifo_offset) musb->io.fifo_offset = musb->ops->fifo_offset; else diff --git a/drivers/usb/musb/musb_core.h b/drivers/usb/musb/musb_core.h index e5410bc67df6..d9248fdd9158 100644 --- a/drivers/usb/musb/musb_core.h +++ b/drivers/usb/musb/musb_core.h @@ -124,41 +124,6 @@ enum musb_g_ep0_state { #define OTG_TIME_A_AIDL_BDIS 200 /* min 200 msec */ #define OTG_TIME_B_ASE0_BRST 100 /* min 3.125 ms */ - -/*************************** REGISTER ACCESS ********************************/ - -/* Endpoint registers (other than dynfifo setup) can be accessed either - * directly with the "flat" model, or after setting up an index register. - */ - -#if defined(CONFIG_ARCH_DAVINCI) || defined(CONFIG_SOC_OMAP2430) \ - || defined(CONFIG_SOC_OMAP3430) || defined(CONFIG_BLACKFIN) \ - || defined(CONFIG_ARCH_OMAP4) -/* REVISIT indexed access seemed to - * misbehave (on DaVinci) for at least peripheral IN ... - */ -#define MUSB_FLAT_REG -#endif - -/* TUSB mapping: "flat" plus ep0 special cases */ -#if defined(CONFIG_USB_MUSB_TUSB6010) || \ - defined(CONFIG_USB_MUSB_TUSB6010_MODULE) -#define musb_ep_select(_mbase, _epnum) \ - musb_writeb((_mbase), MUSB_INDEX, (_epnum)) -#define MUSB_EP_OFFSET MUSB_TUSB_OFFSET - -/* "flat" mapping: each endpoint has its own i/o address */ -#elif defined(MUSB_FLAT_REG) -#define musb_ep_select(_mbase, _epnum) (((void)(_mbase)), ((void)(_epnum))) -#define MUSB_EP_OFFSET MUSB_FLAT_OFFSET - -/* "indexed" mapping: INDEX register controls register bank select */ -#else -#define musb_ep_select(_mbase, _epnum) \ - musb_writeb((_mbase), MUSB_INDEX, (_epnum)) -#define MUSB_EP_OFFSET MUSB_INDEXED_OFFSET -#endif - /****************************** FUNCTIONS ********************************/ #define MUSB_HST_MODE(_musb)\ @@ -515,7 +480,7 @@ static inline int musb_read_fifosize(struct musb *musb, u8 reg = 0; /* read from core using indexed model */ - reg = musb_readb(mbase, MUSB_EP_OFFSET(epnum, MUSB_FIFOSIZE)); + reg = musb_readb(mbase, musb->io.ep_offset(epnum, MUSB_FIFOSIZE)); /* 0's returned when no more endpoints */ if (!reg) return -ENODEV; diff --git a/drivers/usb/musb/musb_dsps.c b/drivers/usb/musb/musb_dsps.c index 440333fcf3a7..53bd0e71d19f 100644 --- a/drivers/usb/musb/musb_dsps.c +++ b/drivers/usb/musb/musb_dsps.c @@ -633,6 +633,7 @@ static int dsps_musb_reset(struct musb *musb) } static struct musb_platform_ops dsps_ops = { + .quirks = MUSB_INDEXED_EP, .init = dsps_musb_init, .exit = dsps_musb_exit, diff --git a/drivers/usb/musb/musb_io.h b/drivers/usb/musb/musb_io.h index 14aa21747b0a..8a57a6f4b3a6 100644 --- a/drivers/usb/musb/musb_io.h +++ b/drivers/usb/musb/musb_io.h @@ -37,6 +37,8 @@ #include +#define musb_ep_select(_mbase, _epnum) musb->io.ep_select((_mbase), (_epnum)) + /** * struct musb_io - IO functions for MUSB * @quirks: platform specific flags diff --git a/drivers/usb/musb/musb_regs.h b/drivers/usb/musb/musb_regs.h index b2b1f736392e..92b4c3df9ffa 100644 --- a/drivers/usb/musb/musb_regs.h +++ b/drivers/usb/musb/musb_regs.h @@ -287,19 +287,8 @@ #define MUSB_FIFOSIZE 0x0F #define MUSB_CONFIGDATA MUSB_FIFOSIZE /* Re-used for EP0 */ -/* Offsets to endpoint registers in indexed model (using INDEX register) */ -#define MUSB_INDEXED_OFFSET(_epnum, _offset) \ - (0x10 + (_offset)) - -/* Offsets to endpoint registers in flat models */ -#define MUSB_FLAT_OFFSET(_epnum, _offset) \ - (0x100 + (0x10*(_epnum)) + (_offset)) - #if defined(CONFIG_USB_MUSB_TUSB6010) || \ defined(CONFIG_USB_MUSB_TUSB6010_MODULE) -/* TUSB6010 EP0 configuration register is special */ -#define MUSB_TUSB_OFFSET(_epnum, _offset) \ - (0x10 + _offset) #include "tusb6010.h" /* Needed "only" for TUSB_EP0_CONF */ #endif diff --git a/drivers/usb/musb/musbhsdma.c b/drivers/usb/musb/musbhsdma.c index e8e9f9aab203..ab7ec09a8afe 100644 --- a/drivers/usb/musb/musbhsdma.c +++ b/drivers/usb/musb/musbhsdma.c @@ -195,6 +195,7 @@ static int dma_channel_abort(struct dma_channel *channel) { struct musb_dma_channel *musb_channel = channel->private_data; void __iomem *mbase = musb_channel->controller->base; + struct musb *musb = musb_channel->controller->private_data; u8 bchannel = musb_channel->idx; int offset; @@ -202,7 +203,7 @@ static int dma_channel_abort(struct dma_channel *channel) if (channel->status == MUSB_DMA_STATUS_BUSY) { if (musb_channel->transmit) { - offset = MUSB_EP_OFFSET(musb_channel->epnum, + offset = musb->io.ep_offset(musb_channel->epnum, MUSB_TXCSR); /* @@ -215,7 +216,7 @@ static int dma_channel_abort(struct dma_channel *channel) csr &= ~MUSB_TXCSR_DMAMODE; musb_writew(mbase, offset, csr); } else { - offset = MUSB_EP_OFFSET(musb_channel->epnum, + offset = musb->io.ep_offset(musb_channel->epnum, MUSB_RXCSR); csr = musb_readw(mbase, offset); @@ -326,7 +327,7 @@ static irqreturn_t dma_controller_irq(int irq, void *private_data) (musb_channel->max_packet_sz - 1))) ) { u8 epnum = musb_channel->epnum; - int offset = MUSB_EP_OFFSET(epnum, + int offset = musb->io.ep_offset(epnum, MUSB_TXCSR); u16 txcsr; diff --git a/drivers/usb/musb/tusb6010.c b/drivers/usb/musb/tusb6010.c index 16c4475e640c..3a5ffd575438 100644 --- a/drivers/usb/musb/tusb6010.c +++ b/drivers/usb/musb/tusb6010.c @@ -131,6 +131,17 @@ static u32 tusb_fifo_offset(u8 epnum) return 0x200 + (epnum * 0x20); } +static u32 tusb_ep_offset(u8 epnum, u16 offset) +{ + return 0x10 + offset; +} + +/* TUSB mapping: "flat" plus ep0 special cases */ +static void tusb_ep_select(void __iomem *mbase, u8 epnum) +{ + musb_writeb(mbase, MUSB_INDEX, epnum); +} + /* * TUSB6010 doesn't allow 8-bit access; 16-bit access is the minimum. */ @@ -1174,6 +1185,8 @@ static const struct musb_platform_ops tusb_ops = { .init = tusb_musb_init, .exit = tusb_musb_exit, + .ep_offset = tusb_ep_offset, + .ep_select = tusb_ep_select, .fifo_offset = tusb_fifo_offset, .readb = tusb_readb, .writeb = tusb_writeb, diff --git a/drivers/usb/musb/ux500.c b/drivers/usb/musb/ux500.c index 1d631d5f4a27..06e8b3523a0a 100644 --- a/drivers/usb/musb/ux500.c +++ b/drivers/usb/musb/ux500.c @@ -188,6 +188,7 @@ static int ux500_musb_exit(struct musb *musb) } static const struct musb_platform_ops ux500_ops = { + .quirks = MUSB_INDEXED_EP, .init = ux500_musb_init, .exit = ux500_musb_exit, -- 2.20.1