diff options
Diffstat (limited to 'arch/powerpc/sysdev/qe_lib/ucc.c')
| -rw-r--r-- | arch/powerpc/sysdev/qe_lib/ucc.c | 212 |
1 files changed, 0 insertions, 212 deletions
diff --git a/arch/powerpc/sysdev/qe_lib/ucc.c b/arch/powerpc/sysdev/qe_lib/ucc.c deleted file mode 100644 index 621575b7e84a..000000000000 --- a/arch/powerpc/sysdev/qe_lib/ucc.c +++ /dev/null @@ -1,212 +0,0 @@ -/* - * arch/powerpc/sysdev/qe_lib/ucc.c - * - * QE UCC API Set - UCC specific routines implementations. - * - * Copyright (C) 2006 Freescale Semiconductor, Inc. All rights reserved. - * - * Authors: Shlomi Gridish <gridish@freescale.com> - * Li Yang <leoli@freescale.com> - * - * 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. - */ -#include <linux/kernel.h> -#include <linux/errno.h> -#include <linux/stddef.h> -#include <linux/spinlock.h> -#include <linux/export.h> - -#include <asm/irq.h> -#include <asm/io.h> -#include <asm/immap_qe.h> -#include <asm/qe.h> -#include <asm/ucc.h> - -int ucc_set_qe_mux_mii_mng(unsigned int ucc_num) -{ - unsigned long flags; - - if (ucc_num > UCC_MAX_NUM - 1) - return -EINVAL; - - spin_lock_irqsave(&cmxgcr_lock, flags); - clrsetbits_be32(&qe_immr->qmx.cmxgcr, QE_CMXGCR_MII_ENET_MNG, - ucc_num << QE_CMXGCR_MII_ENET_MNG_SHIFT); - spin_unlock_irqrestore(&cmxgcr_lock, flags); - - return 0; -} -EXPORT_SYMBOL(ucc_set_qe_mux_mii_mng); - -/* Configure the UCC to either Slow or Fast. - * - * A given UCC can be figured to support either "slow" devices (e.g. UART) - * or "fast" devices (e.g. Ethernet). - * - * 'ucc_num' is the UCC number, from 0 - 7. - * - * This function also sets the UCC_GUEMR_SET_RESERVED3 bit because that bit - * must always be set to 1. - */ -int ucc_set_type(unsigned int ucc_num, enum ucc_speed_type speed) -{ - u8 __iomem *guemr; - - /* The GUEMR register is at the same location for both slow and fast - devices, so we just use uccX.slow.guemr. */ - switch (ucc_num) { - case 0: guemr = &qe_immr->ucc1.slow.guemr; - break; - case 1: guemr = &qe_immr->ucc2.slow.guemr; - break; - case 2: guemr = &qe_immr->ucc3.slow.guemr; - break; - case 3: guemr = &qe_immr->ucc4.slow.guemr; - break; - case 4: guemr = &qe_immr->ucc5.slow.guemr; - break; - case 5: guemr = &qe_immr->ucc6.slow.guemr; - break; - case 6: guemr = &qe_immr->ucc7.slow.guemr; - break; - case 7: guemr = &qe_immr->ucc8.slow.guemr; - break; - default: - return -EINVAL; - } - - clrsetbits_8(guemr, UCC_GUEMR_MODE_MASK, - UCC_GUEMR_SET_RESERVED3 | speed); - - return 0; -} - -static void get_cmxucr_reg(unsigned int ucc_num, __be32 __iomem **cmxucr, - unsigned int *reg_num, unsigned int *shift) -{ - unsigned int cmx = ((ucc_num & 1) << 1) + (ucc_num > 3); - - *reg_num = cmx + 1; - *cmxucr = &qe_immr->qmx.cmxucr[cmx]; - *shift = 16 - 8 * (ucc_num & 2); -} - -int ucc_mux_set_grant_tsa_bkpt(unsigned int ucc_num, int set, u32 mask) -{ - __be32 __iomem *cmxucr; - unsigned int reg_num; - unsigned int shift; - - /* check if the UCC number is in range. */ - if (ucc_num > UCC_MAX_NUM - 1) - return -EINVAL; - - get_cmxucr_reg(ucc_num, &cmxucr, ®_num, &shift); - - if (set) - setbits32(cmxucr, mask << shift); - else - clrbits32(cmxucr, mask << shift); - - return 0; -} - -int ucc_set_qe_mux_rxtx(unsigned int ucc_num, enum qe_clock clock, - enum comm_dir mode) -{ - __be32 __iomem *cmxucr; - unsigned int reg_num; - unsigned int shift; - u32 clock_bits = 0; - - /* check if the UCC number is in range. */ - if (ucc_num > UCC_MAX_NUM - 1) - return -EINVAL; - - /* The communications direction must be RX or TX */ - if (!((mode == COMM_DIR_RX) || (mode == COMM_DIR_TX))) - return -EINVAL; - - get_cmxucr_reg(ucc_num, &cmxucr, ®_num, &shift); - - switch (reg_num) { - case 1: - switch (clock) { - case QE_BRG1: clock_bits = 1; break; - case QE_BRG2: clock_bits = 2; break; - case QE_BRG7: clock_bits = 3; break; - case QE_BRG8: clock_bits = 4; break; - case QE_CLK9: clock_bits = 5; break; - case QE_CLK10: clock_bits = 6; break; - case QE_CLK11: clock_bits = 7; break; - case QE_CLK12: clock_bits = 8; break; - case QE_CLK15: clock_bits = 9; break; - case QE_CLK16: clock_bits = 10; break; - default: break; - } - break; - case 2: - switch (clock) { - case QE_BRG5: clock_bits = 1; break; - case QE_BRG6: clock_bits = 2; break; - case QE_BRG7: clock_bits = 3; break; - case QE_BRG8: clock_bits = 4; break; - case QE_CLK13: clock_bits = 5; break; - case QE_CLK14: clock_bits = 6; break; - case QE_CLK19: clock_bits = 7; break; - case QE_CLK20: clock_bits = 8; break; - case QE_CLK15: clock_bits = 9; break; - case QE_CLK16: clock_bits = 10; break; - default: break; - } - break; - case 3: - switch (clock) { - case QE_BRG9: clock_bits = 1; break; - case QE_BRG10: clock_bits = 2; break; - case QE_BRG15: clock_bits = 3; break; - case QE_BRG16: clock_bits = 4; break; - case QE_CLK3: clock_bits = 5; break; - case QE_CLK4: clock_bits = 6; break; - case QE_CLK17: clock_bits = 7; break; - case QE_CLK18: clock_bits = 8; break; - case QE_CLK7: clock_bits = 9; break; - case QE_CLK8: clock_bits = 10; break; - case QE_CLK16: clock_bits = 11; break; - default: break; - } - break; - case 4: - switch (clock) { - case QE_BRG13: clock_bits = 1; break; - case QE_BRG14: clock_bits = 2; break; - case QE_BRG15: clock_bits = 3; break; - case QE_BRG16: clock_bits = 4; break; - case QE_CLK5: clock_bits = 5; break; - case QE_CLK6: clock_bits = 6; break; - case QE_CLK21: clock_bits = 7; break; - case QE_CLK22: clock_bits = 8; break; - case QE_CLK7: clock_bits = 9; break; - case QE_CLK8: clock_bits = 10; break; - case QE_CLK16: clock_bits = 11; break; - default: break; - } - break; - default: break; - } - - /* Check for invalid combination of clock and UCC number */ - if (!clock_bits) - return -ENOENT; - - if (mode == COMM_DIR_RX) - shift += 4; - - clrsetbits_be32(cmxucr, QE_CMXUCR_TX_CLK_SRC_MASK << shift, - clock_bits << shift); - - return 0; -} |