diff options
Diffstat (limited to 'arch/mips/powertv/powertv-usb.c')
| -rw-r--r-- | arch/mips/powertv/powertv-usb.c | 404 |
1 files changed, 0 insertions, 404 deletions
diff --git a/arch/mips/powertv/powertv-usb.c b/arch/mips/powertv/powertv-usb.c deleted file mode 100644 index d845eac..0000000 --- a/arch/mips/powertv/powertv-usb.c +++ /dev/null @@ -1,404 +0,0 @@ -/* - * powertv-usb.c - * - * Description: ASIC-specific USB device setup and shutdown - * - * Copyright (C) 2005-2009 Scientific-Atlanta, Inc. - * Copyright (C) 2009 Cisco Systems, Inc. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - * - * Author: Ken Eppinett - * David Schleef <ds@schleef.org> - * - * NOTE: The bootloader allocates persistent memory at an address which is - * 16 MiB below the end of the highest address in KSEG0. All fixed - * address memory reservations must avoid this region. - */ - -#include <linux/kernel.h> -#include <linux/export.h> -#include <linux/ioport.h> -#include <linux/platform_device.h> -#include <asm/mach-powertv/asic.h> -#include <asm/mach-powertv/interrupts.h> - -/* misc_clk_ctl1 values */ -#define MCC1_30MHZ_POWERUP_SELECT (1 << 14) -#define MCC1_DIV9 (1 << 13) -#define MCC1_ETHMIPS_POWERUP_SELECT (1 << 11) -#define MCC1_USB_POWERUP_SELECT (1 << 1) -#define MCC1_CLOCK108_POWERUP_SELECT (1 << 0) - -/* Possible values for clock select */ -#define MCC1_USB_CLOCK_HIGH_Z (0 << 4) -#define MCC1_USB_CLOCK_48MHZ (1 << 4) -#define MCC1_USB_CLOCK_24MHZ (2 << 4) -#define MCC1_USB_CLOCK_6MHZ (3 << 4) - -#define MCC1_CONFIG (MCC1_30MHZ_POWERUP_SELECT | \ - MCC1_DIV9 | \ - MCC1_ETHMIPS_POWERUP_SELECT | \ - MCC1_USB_POWERUP_SELECT | \ - MCC1_CLOCK108_POWERUP_SELECT) - -/* misc_clk_ctl2 values */ -#define MCC2_GMII_GCLK_TO_PAD (1 << 31) -#define MCC2_ETHER125_0_CLOCK_SELECT (1 << 29) -#define MCC2_RMII_0_CLOCK_SELECT (1 << 28) -#define MCC2_GMII_TX0_CLOCK_SELECT (1 << 27) -#define MCC2_GMII_RX0_CLOCK_SELECT (1 << 26) -#define MCC2_ETHER125_1_CLOCK_SELECT (1 << 24) -#define MCC2_RMII_1_CLOCK_SELECT (1 << 23) -#define MCC2_GMII_TX1_CLOCK_SELECT (1 << 22) -#define MCC2_GMII_RX1_CLOCK_SELECT (1 << 21) -#define MCC2_ETHER125_2_CLOCK_SELECT (1 << 19) -#define MCC2_RMII_2_CLOCK_SELECT (1 << 18) -#define MCC2_GMII_TX2_CLOCK_SELECT (1 << 17) -#define MCC2_GMII_RX2_CLOCK_SELECT (1 << 16) - -#define ETHER_CLK_CONFIG (MCC2_GMII_GCLK_TO_PAD | \ - MCC2_ETHER125_0_CLOCK_SELECT | \ - MCC2_RMII_0_CLOCK_SELECT | \ - MCC2_GMII_TX0_CLOCK_SELECT | \ - MCC2_GMII_RX0_CLOCK_SELECT | \ - MCC2_ETHER125_1_CLOCK_SELECT | \ - MCC2_RMII_1_CLOCK_SELECT | \ - MCC2_GMII_TX1_CLOCK_SELECT | \ - MCC2_GMII_RX1_CLOCK_SELECT | \ - MCC2_ETHER125_2_CLOCK_SELECT | \ - MCC2_RMII_2_CLOCK_SELECT | \ - MCC2_GMII_TX2_CLOCK_SELECT | \ - MCC2_GMII_RX2_CLOCK_SELECT) - -/* misc_clk_ctl2 definitions for Gaia */ -#define FSX4A_REF_SELECT (1 << 16) -#define FSX4B_REF_SELECT (1 << 17) -#define FSX4C_REF_SELECT (1 << 18) -#define DDR_PLL_REF_SELECT (1 << 19) -#define MIPS_PLL_REF_SELECT (1 << 20) - -/* Definitions for the QAM frequency select register FS432X4A4_QAM_CTL */ -#define QAM_FS_SDIV_SHIFT 29 -#define QAM_FS_MD_SHIFT 24 -#define QAM_FS_MD_MASK 0x1f /* Cut down to 5 bits */ -#define QAM_FS_PE_SHIFT 8 - -#define QAM_FS_DISABLE_DIVIDE_BY_3 (1 << 5) -#define QAM_FS_ENABLE_PROGRAM (1 << 4) -#define QAM_FS_ENABLE_OUTPUT (1 << 3) -#define QAM_FS_SELECT_TEST_BYPASS (1 << 2) -#define QAM_FS_DISABLE_DIGITAL_STANDBY (1 << 1) -#define QAM_FS_CHOOSE_FS (1 << 0) - -/* Definitions for fs432x4a_ctl register */ -#define QAM_FS_NSDIV_54MHZ (1 << 2) - -/* Definitions for bcm1_usb2_ctl register */ -#define BCM1_USB2_CTL_BISTOK (1 << 11) -#define BCM1_USB2_CTL_PORT2_SHIFT_JK (1 << 7) -#define BCM1_USB2_CTL_PORT1_SHIFT_JK (1 << 6) -#define BCM1_USB2_CTL_PORT2_FAST_EDGE (1 << 5) -#define BCM1_USB2_CTL_PORT1_FAST_EDGE (1 << 4) -#define BCM1_USB2_CTL_EHCI_PRT_PWR_ACTIVE_HIGH (1 << 1) -#define BCM1_USB2_CTL_APP_PRT_OVRCUR_IN_ACTIVE_HIGH (1 << 0) - -/* Definitions for crt_spare register */ -#define CRT_SPARE_PORT2_SHIFT_JK (1 << 21) -#define CRT_SPARE_PORT1_SHIFT_JK (1 << 20) -#define CRT_SPARE_PORT2_FAST_EDGE (1 << 19) -#define CRT_SPARE_PORT1_FAST_EDGE (1 << 18) -#define CRT_SPARE_DIVIDE_BY_9_FROM_432 (1 << 17) -#define CRT_SPARE_USB_DIVIDE_BY_9 (1 << 16) - -/* Definitions for usb2_stbus_obc register */ -#define USB_STBUS_OBC_STORE32_LOAD32 0x3 - -/* Definitions for usb2_stbus_mess_size register */ -#define USB2_STBUS_MESS_SIZE_2 0x1 /* 2 packets */ - -/* Definitions for usb2_stbus_chunk_size register */ -#define USB2_STBUS_CHUNK_SIZE_2 0x1 /* 2 packets */ - -/* Definitions for usb2_strap register */ -#define USB2_STRAP_HFREQ_SELECT 0x1 - -/* - * USB Host Resource Definition - */ - -static struct resource ehci_resources[] = { - { - .parent = &asic_resource, - .start = 0, - .end = 0xff, - .flags = IORESOURCE_MEM, - }, - { - .start = irq_usbehci, - .end = irq_usbehci, - .flags = IORESOURCE_IRQ, - }, -}; - -static u64 ehci_dmamask = 0xffffffffULL; - -static struct platform_device ehci_device = { - .name = "powertv-ehci", - .id = 0, - .num_resources = 2, - .resource = ehci_resources, - .dev = { - .dma_mask = &ehci_dmamask, - .coherent_dma_mask = 0xffffffff, - }, -}; - -static struct resource ohci_resources[] = { - { - .parent = &asic_resource, - .start = 0, - .end = 0xff, - .flags = IORESOURCE_MEM, - }, - { - .start = irq_usbohci, - .end = irq_usbohci, - .flags = IORESOURCE_IRQ, - }, -}; - -static u64 ohci_dmamask = 0xffffffffULL; - -static struct platform_device ohci_device = { - .name = "powertv-ohci", - .id = 0, - .num_resources = 2, - .resource = ohci_resources, - .dev = { - .dma_mask = &ohci_dmamask, - .coherent_dma_mask = 0xffffffff, - }, -}; - -static unsigned usb_users; -static DEFINE_SPINLOCK(usb_regs_lock); - -/* - * - * fs_update - set frequency synthesizer for USB - * @pe_bits Phase tap setting - * @md_bits Coarse selector bus for algorithm of phase tap - * @sdiv_bits Output divider setting - * @disable_div_by_3 Either QAM_FS_DISABLE_DIVIDE_BY_3 or zero - * @standby Either QAM_FS_DISABLE_DIGITAL_STANDBY or zero - * - * QAM frequency selection code, which affects the frequency at which USB - * runs. The frequency is calculated as: - * 2^15 * ndiv * Fin - * Fout = ------------------------------------------------------------ - * (sdiv * (ipe * (1 + md/32) - (ipe - 2^15)*(1 + (md + 1)/32))) - * where: - * Fin 54 MHz - * ndiv QAM_FS_NSDIV_54MHZ ? 8 : 16 - * sdiv 1 << (sdiv_bits + 1) - * ipe Same as pe_bits - * md A five-bit, two's-complement integer (range [-16, 15]), which - * is the lower 5 bits of md_bits. - */ -static void fs_update(u32 pe_bits, int md_bits, u32 sdiv_bits, - u32 disable_div_by_3, u32 standby) -{ - u32 val; - - val = ((sdiv_bits << QAM_FS_SDIV_SHIFT) | - ((md_bits & QAM_FS_MD_MASK) << QAM_FS_MD_SHIFT) | - (pe_bits << QAM_FS_PE_SHIFT) | - QAM_FS_ENABLE_OUTPUT | - standby | - disable_div_by_3); - asic_write(val, fs432x4b4_usb_ctl); - asic_write(val | QAM_FS_ENABLE_PROGRAM, fs432x4b4_usb_ctl); - asic_write(val | QAM_FS_ENABLE_PROGRAM | QAM_FS_CHOOSE_FS, - fs432x4b4_usb_ctl); -} - -/* - * usb_eye_configure - for optimizing the shape USB eye waveform - * @set: Bits to set in the register - * @clear: Bits to clear in the register; each bit with a one will - * be set in the register, zero bits will not be modified - */ -static void usb_eye_configure(u32 set, u32 clear) -{ - u32 old; - - old = asic_read(crt_spare); - old |= set; - old &= ~clear; - asic_write(old, crt_spare); -} - -/* - * platform_configure_usb - usb configuration based on platform type. - */ -static void platform_configure_usb(void) -{ - u32 bcm1_usb2_ctl_value; - enum asic_type asic_type; - unsigned long flags; - - spin_lock_irqsave(&usb_regs_lock, flags); - usb_users++; - - if (usb_users != 1) { - spin_unlock_irqrestore(&usb_regs_lock, flags); - return; - } - - asic_type = platform_get_asic(); - - switch (asic_type) { - case ASIC_ZEUS: - fs_update(0x0000, -15, 0x02, 0, 0); - bcm1_usb2_ctl_value = BCM1_USB2_CTL_EHCI_PRT_PWR_ACTIVE_HIGH | - BCM1_USB2_CTL_APP_PRT_OVRCUR_IN_ACTIVE_HIGH; - break; - - case ASIC_CRONUS: - case ASIC_CRONUSLITE: - usb_eye_configure(0, CRT_SPARE_USB_DIVIDE_BY_9); - fs_update(0x8000, -14, 0x03, QAM_FS_DISABLE_DIVIDE_BY_3, - QAM_FS_DISABLE_DIGITAL_STANDBY); - bcm1_usb2_ctl_value = BCM1_USB2_CTL_EHCI_PRT_PWR_ACTIVE_HIGH | - BCM1_USB2_CTL_APP_PRT_OVRCUR_IN_ACTIVE_HIGH; - break; - - case ASIC_CALLIOPE: - fs_update(0x0000, -15, 0x02, QAM_FS_DISABLE_DIVIDE_BY_3, - QAM_FS_DISABLE_DIGITAL_STANDBY); - - switch (platform_get_family()) { - case FAMILY_1500VZE: - break; - - case FAMILY_1500VZF: - usb_eye_configure(CRT_SPARE_PORT2_SHIFT_JK | - CRT_SPARE_PORT1_SHIFT_JK | - CRT_SPARE_PORT2_FAST_EDGE | - CRT_SPARE_PORT1_FAST_EDGE, 0); - break; - - default: - usb_eye_configure(CRT_SPARE_PORT2_SHIFT_JK | - CRT_SPARE_PORT1_SHIFT_JK, 0); - break; - } - - bcm1_usb2_ctl_value = BCM1_USB2_CTL_BISTOK | - BCM1_USB2_CTL_EHCI_PRT_PWR_ACTIVE_HIGH | - BCM1_USB2_CTL_APP_PRT_OVRCUR_IN_ACTIVE_HIGH; - break; - - case ASIC_GAIA: - fs_update(0x8000, -14, 0x03, QAM_FS_DISABLE_DIVIDE_BY_3, - QAM_FS_DISABLE_DIGITAL_STANDBY); - bcm1_usb2_ctl_value = BCM1_USB2_CTL_BISTOK | - BCM1_USB2_CTL_EHCI_PRT_PWR_ACTIVE_HIGH | - BCM1_USB2_CTL_APP_PRT_OVRCUR_IN_ACTIVE_HIGH; - break; - - default: - pr_err("Unknown ASIC type: %d\n", asic_type); - bcm1_usb2_ctl_value = 0; - break; - } - - /* turn on USB power */ - asic_write(0, usb2_strap); - /* Enable all OHCI interrupts */ - asic_write(bcm1_usb2_ctl_value, usb2_control); - /* usb2_stbus_obc store32/load32 */ - asic_write(USB_STBUS_OBC_STORE32_LOAD32, usb2_stbus_obc); - /* usb2_stbus_mess_size 2 packets */ - asic_write(USB2_STBUS_MESS_SIZE_2, usb2_stbus_mess_size); - /* usb2_stbus_chunk_size 2 packets */ - asic_write(USB2_STBUS_CHUNK_SIZE_2, usb2_stbus_chunk_size); - spin_unlock_irqrestore(&usb_regs_lock, flags); -} - -static void platform_unconfigure_usb(void) -{ - unsigned long flags; - - spin_lock_irqsave(&usb_regs_lock, flags); - usb_users--; - if (usb_users == 0) - asic_write(USB2_STRAP_HFREQ_SELECT, usb2_strap); - spin_unlock_irqrestore(&usb_regs_lock, flags); -} - -/* - * Set up the USB EHCI interface - */ -void platform_configure_usb_ehci() -{ - platform_configure_usb(); -} -EXPORT_SYMBOL(platform_configure_usb_ehci); - -/* - * Set up the USB OHCI interface - */ -void platform_configure_usb_ohci() -{ - platform_configure_usb(); -} -EXPORT_SYMBOL(platform_configure_usb_ohci); - -/* - * Shut the USB EHCI interface down - */ -void platform_unconfigure_usb_ehci() -{ - platform_unconfigure_usb(); -} -EXPORT_SYMBOL(platform_unconfigure_usb_ehci); - -/* - * Shut the USB OHCI interface down - */ -void platform_unconfigure_usb_ohci() -{ - platform_unconfigure_usb(); -} -EXPORT_SYMBOL(platform_unconfigure_usb_ohci); - -/** - * platform_devices_init - sets up USB device resourse. - */ -int __init platform_usb_devices_init(struct platform_device **ehci_dev, - struct platform_device **ohci_dev) -{ - *ehci_dev = &ehci_device; - ehci_resources[0].start = asic_reg_phys_addr(ehci_hcapbase); - ehci_resources[0].end += ehci_resources[0].start; - - *ohci_dev = &ohci_device; - ohci_resources[0].start = asic_reg_phys_addr(ohci_hc_revision); - ohci_resources[0].end += ohci_resources[0].start; - - return 0; -} |
