^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * linux/drivers/pcmcia/pxa2xx_lubbock.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Author: George Davis
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Created: Jan 10, 2002
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Copyright: MontaVista Software Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * Originally based upon linux/drivers/pcmcia/sa1100_neponset.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * Lubbock PCMCIA specific routines.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <mach/hardware.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <asm/hardware/sa1111.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <asm/mach-types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include "sa1111_generic.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include "max1600.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) static int lubbock_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) struct max1600 *m;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) ret = max1600_init(skt->socket.dev.parent, &m,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) skt->nr ? MAX1600_CHAN_B : MAX1600_CHAN_A,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) MAX1600_CODE_HIGH);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) if (ret == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) skt->driver_data = m;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) lubbock_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) const socket_state_t *state)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) struct max1600 *m = skt->driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) /* Lubbock uses the Maxim MAX1602, with the following connections:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) * Socket 0 (PCMCIA):
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) * MAX1602 Lubbock Register
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) * Pin Signal
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) * ----- ------- ----------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) * A0VPP S0_PWR0 SA-1111 GPIO A<0>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) * A1VPP S0_PWR1 SA-1111 GPIO A<1>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) * A0VCC S0_PWR2 SA-1111 GPIO A<2>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) * A1VCC S0_PWR3 SA-1111 GPIO A<3>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) * VX VCC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) * VY +3.3V
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) * 12IN +12V
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) * CODE +3.3V Cirrus Code, CODE = High (VY)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) * Socket 1 (CF):
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) * MAX1602 Lubbock Register
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) * Pin Signal
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) * ----- ------- ----------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) * A0VPP GND VPP is not connected
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) * A1VPP GND VPP is not connected
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) * A0VCC S1_PWR0 MISC_WR<14>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) * A1VCC S1_PWR1 MISC_WR<15>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) * VX VCC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) * VY +3.3V
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) * 12IN GND VPP is not connected
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) * CODE +3.3V Cirrus Code, CODE = High (VY)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) again:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) switch (skt->nr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) case 0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) case 1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) ret = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) if (ret == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) ret = sa1111_pcmcia_configure_socket(skt, state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) if (ret == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) ret = max1600_configure(m, state->Vcc, state->Vpp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) #if 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) if (ret == 0 && state->Vcc == 33) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) struct pcmcia_state new_state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) * HACK ALERT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) * We can't sense the voltage properly on Lubbock before
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) * actually applying some power to the socket (catch 22).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) * Resense the socket Voltage Sense pins after applying
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) * socket power.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) * Note: It takes about 2.5ms for the MAX1602 VCC output
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) * to rise.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) mdelay(3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) sa1111_pcmcia_socket_state(skt, &new_state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) if (!new_state.vs_3v && !new_state.vs_Xv) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) * Switch to 5V, Configure socket with 5V voltage
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) max1600_configure(m, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) * It takes about 100ms to turn off Vcc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) mdelay(100);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) * We need to hack around the const qualifier as
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) * well to keep this ugly workaround localized and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) * not force it to the rest of the code. Barf bags
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) * available in the seat pocket in front of you!
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) ((socket_state_t *)state)->Vcc = 50;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) ((socket_state_t *)state)->Vpp = 50;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) goto again;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) static struct pcmcia_low_level lubbock_pcmcia_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) .hw_init = lubbock_pcmcia_hw_init,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) .configure_socket = lubbock_pcmcia_configure_socket,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) .first = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) .nr = 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) #include "pxa2xx_base.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) int pcmcia_lubbock_init(struct sa1111_dev *sadev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) pxa2xx_drv_pcmcia_ops(&lubbock_pcmcia_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) pxa2xx_configure_sockets(&sadev->dev, &lubbock_pcmcia_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) return sa1111_pcmcia_add(sadev, &lubbock_pcmcia_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) pxa2xx_drv_pcmcia_add_one);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) MODULE_LICENSE("GPL");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
3 Commits
0 Branches
0 Tags