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USB: m66592-udc: Add support for SH7722 USBF
Add support for SuperH SH7722 USB Function. M66592 is similar to SH7722 USBF. It can support SH7722 USBF by changing several M66592 code. Signed-off-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com> Acked-by: David Brownell <david-b@pacbell.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Yoshihiro Shimoda
Greg Kroah-Hartman
parent
9da0068a49
commit
8c73aff6d3
3 changed files with 118 additions and 1 deletions
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@ -220,6 +220,16 @@ config USB_M66592
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default USB_GADGET
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select USB_GADGET_SELECTED
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config SUPERH_BUILT_IN_M66592
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boolean "Enable SuperH built-in USB like the M66592"
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depends on USB_GADGET_M66592 && CPU_SUBTYPE_SH7722
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help
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SH7722 has USB like the M66592.
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The transfer rate is very slow when use "Ethernet Gadget".
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However, this problem is improved if change a value of
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NET_IP_ALIGN to 4.
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config USB_GADGET_GOKU
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boolean "Toshiba TC86C001 'Goku-S'"
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depends on PCI
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@ -36,9 +36,14 @@ MODULE_DESCRIPTION("M66592 USB gadget driver");
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MODULE_LICENSE("GPL");
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MODULE_AUTHOR("Yoshihiro Shimoda");
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#define DRIVER_VERSION "29 May 2007"
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#define DRIVER_VERSION "18 Oct 2007"
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/* module parameters */
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#if defined(CONFIG_SUPERH_BUILT_IN_M66592)
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static unsigned short endian = M66592_LITTLE;
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module_param(endian, ushort, 0644);
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MODULE_PARM_DESC(endian, "data endian: big=0, little=0 (default=0)");
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#else
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static unsigned short clock = M66592_XTAL24;
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module_param(clock, ushort, 0644);
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MODULE_PARM_DESC(clock, "input clock: 48MHz=32768, 24MHz=16384, 12MHz=0 "
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@ -56,6 +61,7 @@ static unsigned short irq_sense = M66592_INTL;
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module_param(irq_sense, ushort, 0644);
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MODULE_PARM_DESC(irq_sense, "IRQ sense: low level=2, falling edge=0 "
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"(default=2)");
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#endif
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static const char udc_name[] = "m66592_udc";
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static const char *m66592_ep_name[] = {
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@ -360,6 +366,7 @@ static void m66592_ep_setting(struct m66592 *m66592, struct m66592_ep *ep,
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ep->fifosel = M66592_D0FIFOSEL;
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ep->fifoctr = M66592_D0FIFOCTR;
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ep->fifotrn = M66592_D0FIFOTRN;
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#if !defined(CONFIG_SUPERH_BUILT_IN_M66592)
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} else if (m66592->num_dma == 1) {
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m66592->num_dma++;
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ep->use_dma = 1;
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@ -367,6 +374,7 @@ static void m66592_ep_setting(struct m66592 *m66592, struct m66592_ep *ep,
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ep->fifosel = M66592_D1FIFOSEL;
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ep->fifoctr = M66592_D1FIFOCTR;
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ep->fifotrn = M66592_D1FIFOTRN;
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#endif
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} else {
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ep->use_dma = 0;
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ep->fifoaddr = M66592_CFIFO;
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@ -611,6 +619,28 @@ static void start_ep0(struct m66592_ep *ep, struct m66592_request *req)
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}
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}
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#if defined(CONFIG_SUPERH_BUILT_IN_M66592)
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static void init_controller(struct m66592 *m66592)
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{
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usbf_start_clock();
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m66592_bset(m66592, M66592_HSE, M66592_SYSCFG); /* High spd */
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m66592_bclr(m66592, M66592_USBE, M66592_SYSCFG);
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m66592_bclr(m66592, M66592_DPRPU, M66592_SYSCFG);
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m66592_bset(m66592, M66592_USBE, M66592_SYSCFG);
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/* This is a workaound for SH7722 2nd cut */
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m66592_bset(m66592, 0x8000, M66592_DVSTCTR);
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m66592_bset(m66592, 0x1000, M66592_TESTMODE);
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m66592_bclr(m66592, 0x8000, M66592_DVSTCTR);
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m66592_bset(m66592, M66592_INTL, M66592_INTENB1);
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m66592_write(m66592, 0, M66592_CFBCFG);
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m66592_write(m66592, 0, M66592_D0FBCFG);
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m66592_bset(m66592, endian, M66592_CFBCFG);
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m66592_bset(m66592, endian, M66592_D0FBCFG);
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}
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#else /* #if defined(CONFIG_SUPERH_BUILT_IN_M66592) */
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static void init_controller(struct m66592 *m66592)
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{
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m66592_bset(m66592, (vif & M66592_LDRV) | (endian & M66592_BIGEND),
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@ -636,9 +666,13 @@ static void init_controller(struct m66592 *m66592)
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m66592_write(m66592, M66592_BURST | M66592_CPU_ADR_RD_WR,
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M66592_DMA0CFG);
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}
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#endif /* #if defined(CONFIG_SUPERH_BUILT_IN_M66592) */
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static void disable_controller(struct m66592 *m66592)
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{
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#if defined(CONFIG_SUPERH_BUILT_IN_M66592)
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usbf_stop_clock();
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#else
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m66592_bclr(m66592, M66592_SCKE, M66592_SYSCFG);
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udelay(1);
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m66592_bclr(m66592, M66592_PLLC, M66592_SYSCFG);
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@ -646,15 +680,20 @@ static void disable_controller(struct m66592 *m66592)
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m66592_bclr(m66592, M66592_RCKE, M66592_SYSCFG);
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udelay(1);
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m66592_bclr(m66592, M66592_XCKE, M66592_SYSCFG);
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#endif
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}
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static void m66592_start_xclock(struct m66592 *m66592)
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{
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#if defined(CONFIG_SUPERH_BUILT_IN_M66592)
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usbf_start_clock();
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#else
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u16 tmp;
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tmp = m66592_read(m66592, M66592_SYSCFG);
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if (!(tmp & M66592_XCKE))
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m66592_bset(m66592, M66592_XCKE, M66592_SYSCFG);
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#endif
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}
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/*-------------------------------------------------------------------------*/
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@ -1142,6 +1181,19 @@ static irqreturn_t m66592_irq(int irq, void *_m66592)
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intsts0 = m66592_read(m66592, M66592_INTSTS0);
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intenb0 = m66592_read(m66592, M66592_INTENB0);
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#if defined(CONFIG_SUPERH_BUILT_IN_M66592)
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if (!intsts0 && !intenb0) {
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/*
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* When USB clock stops, it cannot read register. Even if a
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* clock stops, the interrupt occurs. So this driver turn on
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* a clock by this timing and do re-reading of register.
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*/
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m66592_start_xclock(m66592);
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intsts0 = m66592_read(m66592, M66592_INTSTS0);
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intenb0 = m66592_read(m66592, M66592_INTENB0);
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}
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#endif
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savepipe = m66592_read(m66592, M66592_CFIFOSEL);
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mask0 = intsts0 & intenb0;
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@ -1485,6 +1537,7 @@ static int __exit m66592_remove(struct platform_device *pdev)
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iounmap(m66592->reg);
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free_irq(platform_get_irq(pdev, 0), m66592);
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m66592_free_request(&m66592->ep[0].ep, m66592->ep0_req);
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usbf_stop_clock();
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kfree(m66592);
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return 0;
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}
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@ -72,6 +72,11 @@
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#define M66592_P_TST_J 0x0001 /* PERI TEST J */
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#define M66592_P_TST_NORMAL 0x0000 /* PERI Normal Mode */
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#if defined(CONFIG_SUPERH_BUILT_IN_M66592)
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#define M66592_CFBCFG 0x0A
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#define M66592_D0FBCFG 0x0C
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#define M66592_LITTLE 0x0100 /* b8: Little endian mode */
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#else
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#define M66592_PINCFG 0x0A
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#define M66592_LDRV 0x8000 /* b15: Drive Current Adjust */
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#define M66592_BIGEND 0x0100 /* b8: Big endian mode */
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@ -91,6 +96,7 @@
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#define M66592_PKTM 0x0020 /* b5: Packet mode */
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#define M66592_DENDE 0x0010 /* b4: Dend enable */
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#define M66592_OBUS 0x0004 /* b2: OUTbus mode */
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#endif /* #if defined(CONFIG_SUPERH_BUILT_IN_M66592) */
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#define M66592_CFIFO 0x10
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#define M66592_D0FIFO 0x14
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@ -103,9 +109,13 @@
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#define M66592_REW 0x4000 /* b14: Buffer rewind */
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#define M66592_DCLRM 0x2000 /* b13: DMA buffer clear mode */
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#define M66592_DREQE 0x1000 /* b12: DREQ output enable */
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#if defined(CONFIG_SUPERH_BUILT_IN_M66592)
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#define M66592_MBW 0x0800 /* b11: Maximum bit width for FIFO */
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#else
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#define M66592_MBW 0x0400 /* b10: Maximum bit width for FIFO */
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#define M66592_MBW_8 0x0000 /* 8bit */
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#define M66592_MBW_16 0x0400 /* 16bit */
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#endif /* #if defined(CONFIG_SUPERH_BUILT_IN_M66592) */
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#define M66592_TRENB 0x0200 /* b9: Transaction counter enable */
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#define M66592_TRCLR 0x0100 /* b8: Transaction counter clear */
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#define M66592_DEZPM 0x0080 /* b7: Zero-length packet mode */
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@ -530,8 +540,13 @@ static inline void m66592_read_fifo(struct m66592 *m66592,
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{
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unsigned long fifoaddr = (unsigned long)m66592->reg + offset;
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#if defined(CONFIG_SUPERH_BUILT_IN_M66592)
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len = (len + 3) / 4;
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insl(fifoaddr, buf, len);
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#else
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len = (len + 1) / 2;
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insw(fifoaddr, buf, len);
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#endif
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}
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static inline void m66592_write(struct m66592 *m66592, u16 val,
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@ -545,6 +560,24 @@ static inline void m66592_write_fifo(struct m66592 *m66592,
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void *buf, unsigned long len)
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{
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unsigned long fifoaddr = (unsigned long)m66592->reg + offset;
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#if defined(CONFIG_SUPERH_BUILT_IN_M66592)
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unsigned long count;
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unsigned char *pb;
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int i;
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count = len / 4;
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outsl(fifoaddr, buf, count);
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if (len & 0x00000003) {
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pb = buf + count * 4;
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for (i = 0; i < (len & 0x00000003); i++) {
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if (m66592_read(m66592, M66592_CFBCFG)) /* little */
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outb(pb[i], fifoaddr + (3 - i));
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else
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outb(pb[i], fifoaddr + i);
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}
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}
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#else
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unsigned long odd = len & 0x0001;
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len = len / 2;
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@ -553,6 +586,7 @@ static inline void m66592_write_fifo(struct m66592 *m66592,
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unsigned char *p = buf + len*2;
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outb(*p, fifoaddr);
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}
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#endif /* #if defined(CONFIG_SUPERH_BUILT_IN_M66592) */
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}
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static inline void m66592_mdfy(struct m66592 *m66592, u16 val, u16 pat,
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@ -570,6 +604,26 @@ static inline void m66592_mdfy(struct m66592 *m66592, u16 val, u16 pat,
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#define m66592_bset(m66592, val, offset) \
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m66592_mdfy(m66592, val, 0, offset)
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#if defined(CONFIG_SUPERH_BUILT_IN_M66592)
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#include <asm/io.h>
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#define MSTPCR2 0xA4150038 /* for SH7722 */
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#define MSTPCR2_USB 0x00000800
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static inline void usbf_start_clock(void)
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{
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ctrl_outl(ctrl_inl(MSTPCR2) & ~MSTPCR2_USB, MSTPCR2);
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}
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static inline void usbf_stop_clock(void)
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{
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ctrl_outl(ctrl_inl(MSTPCR2) | MSTPCR2_USB, MSTPCR2);
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}
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#else
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#define usbf_start_clock(x)
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#define usbf_stop_clock(x)
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#endif /* if defined(CONFIG_SUPERH_BUILT_IN_M66592) */
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#endif /* ifndef __M66592_UDC_H__ */
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