staging: dwc2: set up all module params
The DWC2 USB controller in the BCM2835 (Raspberry Pi) needs some non- default parameters. Select these based on the compatible value from the DT node. For all other HW, fall back to the default parameters currently in use. The values in params_bcm2835[] were posted to the mailing list by Paul quite some time ago. I made a couple of minor modifications since then; to set ahbcfg instead of ahb_single, and to set uframe_sched. Signed-off-by: Stephen Warren <swarren@wwwdotorg.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -2,7 +2,9 @@ Platform DesignWare HS OTG USB 2.0 controller
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-----------------------------------------------------
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-----------------------------------------------------
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Required properties:
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Required properties:
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- compatible : "snps,dwc2"
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- compatible : One of:
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- brcm,bcm2835-usb: The DWC2 USB controller instance in the BCM2835 SoC.
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- snps,dwc2: A generic DWC2 USB controller with default parameters.
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- reg : Should contain 1 register range (address and length)
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- reg : Should contain 1 register range (address and length)
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- interrupts : Should contain 1 interrupt
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- interrupts : Should contain 1 interrupt
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@ -39,6 +39,7 @@
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#include <linux/slab.h>
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#include <linux/slab.h>
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#include <linux/device.h>
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#include <linux/device.h>
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#include <linux/dma-mapping.h>
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#include <linux/dma-mapping.h>
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#include <linux/of_device.h>
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#include <linux/platform_device.h>
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#include <linux/platform_device.h>
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#include "core.h"
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#include "core.h"
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@ -46,6 +47,34 @@
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static const char dwc2_driver_name[] = "dwc2";
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static const char dwc2_driver_name[] = "dwc2";
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static const struct dwc2_core_params params_bcm2835 = {
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.otg_cap = 0, /* HNP/SRP capable */
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.otg_ver = 0, /* 1.3 */
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.dma_enable = 1,
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.dma_desc_enable = 0,
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.speed = 0, /* High Speed */
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.enable_dynamic_fifo = 1,
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.en_multiple_tx_fifo = 1,
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.host_rx_fifo_size = 774, /* 774 DWORDs */
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.host_nperio_tx_fifo_size = 256, /* 256 DWORDs */
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.host_perio_tx_fifo_size = 512, /* 512 DWORDs */
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.max_transfer_size = 65535,
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.max_packet_count = 511,
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.host_channels = 8,
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.phy_type = 1, /* UTMI */
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.phy_utmi_width = 8, /* 8 bits */
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.phy_ulpi_ddr = 0, /* Single */
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.phy_ulpi_ext_vbus = 0,
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.i2c_enable = 0,
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.ulpi_fs_ls = 0,
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.host_support_fs_ls_low_power = 0,
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.host_ls_low_power_phy_clk = 0, /* 48 MHz */
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.ts_dline = 0,
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.reload_ctl = 0,
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.ahbcfg = 0x10,
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.uframe_sched = 1,
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};
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/**
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/**
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* dwc2_driver_remove() - Called when the DWC_otg core is unregistered with the
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* dwc2_driver_remove() - Called when the DWC_otg core is unregistered with the
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* DWC_otg driver
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* DWC_otg driver
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@ -66,6 +95,13 @@ static int dwc2_driver_remove(struct platform_device *dev)
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return 0;
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return 0;
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}
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}
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static const struct of_device_id dwc2_of_match_table[] = {
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{ .compatible = "brcm,bcm2835-usb", .data = ¶ms_bcm2835 },
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{ .compatible = "snps,dwc2", .data = NULL },
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{},
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};
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MODULE_DEVICE_TABLE(of, dwc2_of_match_table);
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/**
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/**
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* dwc2_driver_probe() - Called when the DWC_otg core is bound to the DWC_otg
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* dwc2_driver_probe() - Called when the DWC_otg core is bound to the DWC_otg
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* driver
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* driver
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@ -80,14 +116,22 @@ static int dwc2_driver_remove(struct platform_device *dev)
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*/
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*/
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static int dwc2_driver_probe(struct platform_device *dev)
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static int dwc2_driver_probe(struct platform_device *dev)
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{
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{
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const struct of_device_id *match;
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const struct dwc2_core_params *params;
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struct dwc2_core_params defparams;
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struct dwc2_hsotg *hsotg;
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struct dwc2_hsotg *hsotg;
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struct resource *res;
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struct resource *res;
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int retval;
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int retval;
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int irq;
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int irq;
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struct dwc2_core_params params;
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/* Default all params to autodetect */
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match = of_match_device(dwc2_of_match_table, &dev->dev);
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dwc2_set_all_params(¶ms, -1);
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if (match && match->data) {
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params = match->data;
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} else {
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/* Default all params to autodetect */
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dwc2_set_all_params(&defparams, -1);
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params = &defparams;
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}
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hsotg = devm_kzalloc(&dev->dev, sizeof(*hsotg), GFP_KERNEL);
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hsotg = devm_kzalloc(&dev->dev, sizeof(*hsotg), GFP_KERNEL);
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if (!hsotg)
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if (!hsotg)
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@ -118,7 +162,7 @@ static int dwc2_driver_probe(struct platform_device *dev)
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dev_dbg(&dev->dev, "mapped PA %08lx to VA %p\n",
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dev_dbg(&dev->dev, "mapped PA %08lx to VA %p\n",
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(unsigned long)res->start, hsotg->regs);
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(unsigned long)res->start, hsotg->regs);
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retval = dwc2_hcd_init(hsotg, irq, ¶ms);
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retval = dwc2_hcd_init(hsotg, irq, params);
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if (retval)
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if (retval)
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return retval;
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return retval;
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@ -127,12 +171,6 @@ static int dwc2_driver_probe(struct platform_device *dev)
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return retval;
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return retval;
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}
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}
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static const struct of_device_id dwc2_of_match_table[] = {
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{ .compatible = "snps,dwc2" },
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{},
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};
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MODULE_DEVICE_TABLE(of, dwc2_of_match_table);
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static struct platform_driver dwc2_platform_driver = {
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static struct platform_driver dwc2_platform_driver = {
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.driver = {
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.driver = {
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.name = dwc2_driver_name,
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.name = dwc2_driver_name,
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