1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * Copyright (C) 2006 Freescale Semiconductor, Inc. 4 * 5 * Dave Liu <daveliu (at) freescale.com> 6 * based on source code of Shlomi Gridish 7 */ 8 9 #include <common.h> 10 #include <linux/errno.h> 11 #include <asm/io.h> 12 #include <asm/immap_85xx.h> 13 14 #if defined(CONFIG_QE) && !defined(CONFIG_U_QE) 15 #define NUM_OF_PINS 32 16 void qe_config_iopin(u8 port, u8 pin, int dir, int open_drain, int assign) 17 { 18 u32 pin_2bit_mask; 19 u32 pin_2bit_dir; 20 u32 pin_2bit_assign; 21 u32 pin_1bit_mask; 22 u32 tmp_val; 23 volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR); 24 volatile par_io_t *par_io = (volatile par_io_t *) 25 &(gur->qe_par_io); 26 27 /* Caculate pin location and 2bit mask and dir */ 28 pin_2bit_mask = (u32)(0x3 << (NUM_OF_PINS-(pin%(NUM_OF_PINS/2)+1)*2)); 29 pin_2bit_dir = (u32)(dir << (NUM_OF_PINS-(pin%(NUM_OF_PINS/2)+1)*2)); 30 31 /* Setup the direction */ 32 tmp_val = (pin > (NUM_OF_PINS/2) - 1) ? \ 33 in_be32(&par_io[port].cpdir2) : 34 in_be32(&par_io[port].cpdir1); 35 36 if (pin > (NUM_OF_PINS/2) -1) { 37 out_be32(&par_io[port].cpdir2, ~pin_2bit_mask & tmp_val); 38 out_be32(&par_io[port].cpdir2, pin_2bit_dir | tmp_val); 39 } else { 40 out_be32(&par_io[port].cpdir1, ~pin_2bit_mask & tmp_val); 41 out_be32(&par_io[port].cpdir1, pin_2bit_dir | tmp_val); 42 } 43 44 /* Calculate pin location for 1bit mask */ 45 pin_1bit_mask = (u32)(1 << (NUM_OF_PINS - (pin+1))); 46 47 /* Setup the open drain */ 48 tmp_val = in_be32(&par_io[port].cpodr); 49 if (open_drain) 50 out_be32(&par_io[port].cpodr, pin_1bit_mask | tmp_val); 51 else 52 out_be32(&par_io[port].cpodr, ~pin_1bit_mask & tmp_val); 53 54 /* Setup the assignment */ 55 tmp_val = (pin > (NUM_OF_PINS/2) - 1) ? 56 in_be32(&par_io[port].cppar2): 57 in_be32(&par_io[port].cppar1); 58 pin_2bit_assign = (u32)(assign 59 << (NUM_OF_PINS - (pin%(NUM_OF_PINS/2)+1)*2)); 60 61 /* Clear and set 2 bits mask */ 62 if (pin > (NUM_OF_PINS/2) - 1) { 63 out_be32(&par_io[port].cppar2, ~pin_2bit_mask & tmp_val); 64 out_be32(&par_io[port].cppar2, pin_2bit_assign | tmp_val); 65 } else { 66 out_be32(&par_io[port].cppar1, ~pin_2bit_mask & tmp_val); 67 out_be32(&par_io[port].cppar1, pin_2bit_assign | tmp_val); 68 } 69 } 70 71 #endif /* CONFIG_QE */ 72
