From e9b29ffc519b9e63d4e1c0b1278bb951bb418a9d Mon Sep 17 00:00:00 2001 From: Peter Korsgaard Date: Sun, 27 Apr 2008 08:59:45 +0200 Subject: USB: add Cypress c67x00 OTG controller HCD driver This patch adds HCD support for the Cypress c67x00 family of devices. Signed-off-by: Peter Korsgaard Signed-off-by: Greg Kroah-Hartman --- drivers/usb/c67x00/c67x00-ll-hpi.c | 75 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 75 insertions(+) (limited to 'drivers/usb/c67x00/c67x00-ll-hpi.c') diff --git a/drivers/usb/c67x00/c67x00-ll-hpi.c b/drivers/usb/c67x00/c67x00-ll-hpi.c index e921991bc36a..f3430b372f09 100644 --- a/drivers/usb/c67x00/c67x00-ll-hpi.c +++ b/drivers/usb/c67x00/c67x00-ll-hpi.c @@ -296,6 +296,81 @@ static int c67x00_comm_exec_int(struct c67x00_device *dev, u16 nr, return rc; } +/* -------------------------------------------------------------------------- */ +/* Host specific functions */ + +void c67x00_ll_set_husb_eot(struct c67x00_device *dev, u16 value) +{ + mutex_lock(&dev->hpi.lcp.mutex); + hpi_write_word(dev, HUSB_pEOT, value); + mutex_unlock(&dev->hpi.lcp.mutex); +} + +static inline void c67x00_ll_husb_sie_init(struct c67x00_sie *sie) +{ + struct c67x00_device *dev = sie->dev; + struct c67x00_lcp_int_data data; + int rc; + + rc = c67x00_comm_exec_int(dev, HUSB_SIE_INIT_INT(sie->sie_num), &data); + BUG_ON(rc); /* No return path for error code; crash spectacularly */ +} + +void c67x00_ll_husb_reset(struct c67x00_sie *sie, int port) +{ + struct c67x00_device *dev = sie->dev; + struct c67x00_lcp_int_data data; + int rc; + + data.regs[0] = 50; /* Reset USB port for 50ms */ + data.regs[1] = port | (sie->sie_num << 1); + rc = c67x00_comm_exec_int(dev, HUSB_RESET_INT, &data); + BUG_ON(rc); /* No return path for error code; crash spectacularly */ +} + +void c67x00_ll_husb_set_current_td(struct c67x00_sie *sie, u16 addr) +{ + hpi_write_word(sie->dev, HUSB_SIE_pCurrentTDPtr(sie->sie_num), addr); +} + +u16 c67x00_ll_husb_get_current_td(struct c67x00_sie *sie) +{ + return hpi_read_word(sie->dev, HUSB_SIE_pCurrentTDPtr(sie->sie_num)); +} + +u16 c67x00_ll_husb_get_frame(struct c67x00_sie *sie) +{ + return hpi_read_word(sie->dev, HOST_FRAME_REG(sie->sie_num)); +} + +void c67x00_ll_husb_init_host_port(struct c67x00_sie *sie) +{ + /* Set port into host mode */ + hpi_set_bits(sie->dev, USB_CTL_REG(sie->sie_num), HOST_MODE); + c67x00_ll_husb_sie_init(sie); + /* Clear interrupts */ + c67x00_ll_usb_clear_status(sie, HOST_STAT_MASK); + /* Check */ + if (!(hpi_read_word(sie->dev, USB_CTL_REG(sie->sie_num)) & HOST_MODE)) + dev_warn(sie_dev(sie), + "SIE %d not set to host mode\n", sie->sie_num); +} + +void c67x00_ll_husb_reset_port(struct c67x00_sie *sie, int port) +{ + /* Clear connect change */ + c67x00_ll_usb_clear_status(sie, PORT_CONNECT_CHANGE(port)); + + /* Enable interrupts */ + hpi_set_bits(sie->dev, HPI_IRQ_ROUTING_REG, + SOFEOP_TO_CPU_EN(sie->sie_num)); + hpi_set_bits(sie->dev, HOST_IRQ_EN_REG(sie->sie_num), + SOF_EOP_IRQ_EN | DONE_IRQ_EN); + + /* Enable pull down transistors */ + hpi_set_bits(sie->dev, USB_CTL_REG(sie->sie_num), PORT_RES_EN(port)); +} + /* -------------------------------------------------------------------------- */ void c67x00_ll_irq(struct c67x00_device *dev, u16 int_status) -- cgit v1.2.3