Thomas Gleixner | d2912cb | 2019-06-04 10:11:33 +0200 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0-only |
Mike Rapoport | 87944f3 | 2007-09-23 16:00:20 +0100 | [diff] [blame] | 2 | /* |
| 3 | * linux/drivers/pcmcia/pxa/pxa_cm_x270.c |
| 4 | * |
Mike Rapoport | 779c545 | 2008-06-17 09:48:03 +0100 | [diff] [blame] | 5 | * Compulab Ltd., 2003, 2007, 2008 |
Mike Rapoport | 87944f3 | 2007-09-23 16:00:20 +0100 | [diff] [blame] | 6 | * Mike Rapoport <mike@compulab.co.il> |
Mike Rapoport | 87944f3 | 2007-09-23 16:00:20 +0100 | [diff] [blame] | 7 | */ |
| 8 | |
Mike Rapoport | 87944f3 | 2007-09-23 16:00:20 +0100 | [diff] [blame] | 9 | #include <linux/platform_device.h> |
| 10 | #include <linux/irq.h> |
| 11 | #include <linux/delay.h> |
Mike Rapoport | 779c545 | 2008-06-17 09:48:03 +0100 | [diff] [blame] | 12 | #include <linux/gpio.h> |
Paul Gortmaker | 402b20d | 2011-07-31 16:21:42 -0400 | [diff] [blame] | 13 | #include <linux/export.h> |
Mike Rapoport | 87944f3 | 2007-09-23 16:00:20 +0100 | [diff] [blame] | 14 | |
Mike Rapoport | 87944f3 | 2007-09-23 16:00:20 +0100 | [diff] [blame] | 15 | #include "soc_common.h" |
| 16 | |
Mike Rapoport | 779c545 | 2008-06-17 09:48:03 +0100 | [diff] [blame] | 17 | #define GPIO_PCMCIA_S0_CD_VALID (84) |
| 18 | #define GPIO_PCMCIA_S0_RDYINT (82) |
| 19 | #define GPIO_PCMCIA_RESET (53) |
| 20 | |
Mike Rapoport | 87944f3 | 2007-09-23 16:00:20 +0100 | [diff] [blame] | 21 | static int cmx270_pcmcia_hw_init(struct soc_pcmcia_socket *skt) |
| 22 | { |
Mike Rapoport | 779c545 | 2008-06-17 09:48:03 +0100 | [diff] [blame] | 23 | int ret = gpio_request(GPIO_PCMCIA_RESET, "PCCard reset"); |
| 24 | if (ret) |
| 25 | return ret; |
| 26 | gpio_direction_output(GPIO_PCMCIA_RESET, 0); |
Mike Rapoport | 87944f3 | 2007-09-23 16:00:20 +0100 | [diff] [blame] | 27 | |
Russell King | a9bb5a4 | 2012-01-13 22:56:32 +0000 | [diff] [blame] | 28 | skt->stat[SOC_STAT_CD].gpio = GPIO_PCMCIA_S0_CD_VALID; |
| 29 | skt->stat[SOC_STAT_CD].name = "PCMCIA0 CD"; |
| 30 | skt->stat[SOC_STAT_RDY].gpio = GPIO_PCMCIA_S0_RDYINT; |
| 31 | skt->stat[SOC_STAT_RDY].name = "PCMCIA0 RDY"; |
Mike Rapoport | 87944f3 | 2007-09-23 16:00:20 +0100 | [diff] [blame] | 32 | |
Mike Rapoport | 779c545 | 2008-06-17 09:48:03 +0100 | [diff] [blame] | 33 | return ret; |
Mike Rapoport | 87944f3 | 2007-09-23 16:00:20 +0100 | [diff] [blame] | 34 | } |
| 35 | |
| 36 | static void cmx270_pcmcia_shutdown(struct soc_pcmcia_socket *skt) |
| 37 | { |
Mike Rapoport | 779c545 | 2008-06-17 09:48:03 +0100 | [diff] [blame] | 38 | gpio_free(GPIO_PCMCIA_RESET); |
Mike Rapoport | 87944f3 | 2007-09-23 16:00:20 +0100 | [diff] [blame] | 39 | } |
| 40 | |
| 41 | |
| 42 | static void cmx270_pcmcia_socket_state(struct soc_pcmcia_socket *skt, |
| 43 | struct pcmcia_state *state) |
| 44 | { |
Mike Rapoport | 87944f3 | 2007-09-23 16:00:20 +0100 | [diff] [blame] | 45 | state->vs_3v = 0; |
| 46 | state->vs_Xv = 0; |
Mike Rapoport | 87944f3 | 2007-09-23 16:00:20 +0100 | [diff] [blame] | 47 | } |
| 48 | |
| 49 | |
| 50 | static int cmx270_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, |
| 51 | const socket_state_t *state) |
| 52 | { |
Mike Rapoport | 87944f3 | 2007-09-23 16:00:20 +0100 | [diff] [blame] | 53 | switch (skt->nr) { |
| 54 | case 0: |
| 55 | if (state->flags & SS_RESET) { |
Mike Rapoport | 779c545 | 2008-06-17 09:48:03 +0100 | [diff] [blame] | 56 | gpio_set_value(GPIO_PCMCIA_RESET, 1); |
Mike Rapoport | 87944f3 | 2007-09-23 16:00:20 +0100 | [diff] [blame] | 57 | udelay(10); |
Mike Rapoport | 779c545 | 2008-06-17 09:48:03 +0100 | [diff] [blame] | 58 | gpio_set_value(GPIO_PCMCIA_RESET, 0); |
Mike Rapoport | 87944f3 | 2007-09-23 16:00:20 +0100 | [diff] [blame] | 59 | } |
| 60 | break; |
| 61 | } |
| 62 | |
Mike Rapoport | 87944f3 | 2007-09-23 16:00:20 +0100 | [diff] [blame] | 63 | return 0; |
| 64 | } |
| 65 | |
Russell King | 4e5e8de | 2008-04-24 15:28:11 +0100 | [diff] [blame] | 66 | static struct pcmcia_low_level cmx270_pcmcia_ops __initdata = { |
Mike Rapoport | 87944f3 | 2007-09-23 16:00:20 +0100 | [diff] [blame] | 67 | .owner = THIS_MODULE, |
| 68 | .hw_init = cmx270_pcmcia_hw_init, |
| 69 | .hw_shutdown = cmx270_pcmcia_shutdown, |
| 70 | .socket_state = cmx270_pcmcia_socket_state, |
| 71 | .configure_socket = cmx270_pcmcia_configure_socket, |
Mike Rapoport | 779c545 | 2008-06-17 09:48:03 +0100 | [diff] [blame] | 72 | .nr = 1, |
Mike Rapoport | 87944f3 | 2007-09-23 16:00:20 +0100 | [diff] [blame] | 73 | }; |
| 74 | |
| 75 | static struct platform_device *cmx270_pcmcia_device; |
| 76 | |
Mike Rapoport | 8616e2f | 2008-10-05 10:27:22 +0100 | [diff] [blame] | 77 | int __init cmx270_pcmcia_init(void) |
Mike Rapoport | 87944f3 | 2007-09-23 16:00:20 +0100 | [diff] [blame] | 78 | { |
| 79 | int ret; |
| 80 | |
Mike Rapoport | 87944f3 | 2007-09-23 16:00:20 +0100 | [diff] [blame] | 81 | cmx270_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1); |
| 82 | |
| 83 | if (!cmx270_pcmcia_device) |
| 84 | return -ENOMEM; |
| 85 | |
Russell King | 4e5e8de | 2008-04-24 15:28:11 +0100 | [diff] [blame] | 86 | ret = platform_device_add_data(cmx270_pcmcia_device, &cmx270_pcmcia_ops, |
| 87 | sizeof(cmx270_pcmcia_ops)); |
Mike Rapoport | 87944f3 | 2007-09-23 16:00:20 +0100 | [diff] [blame] | 88 | |
Russell King | 4e5e8de | 2008-04-24 15:28:11 +0100 | [diff] [blame] | 89 | if (ret == 0) { |
| 90 | printk(KERN_INFO "Registering cm-x270 PCMCIA interface.\n"); |
| 91 | ret = platform_device_add(cmx270_pcmcia_device); |
| 92 | } |
Mike Rapoport | 87944f3 | 2007-09-23 16:00:20 +0100 | [diff] [blame] | 93 | |
| 94 | if (ret) |
| 95 | platform_device_put(cmx270_pcmcia_device); |
| 96 | |
| 97 | return ret; |
| 98 | } |
| 99 | |
Mike Rapoport | 8616e2f | 2008-10-05 10:27:22 +0100 | [diff] [blame] | 100 | void __exit cmx270_pcmcia_exit(void) |
Mike Rapoport | 87944f3 | 2007-09-23 16:00:20 +0100 | [diff] [blame] | 101 | { |
| 102 | platform_device_unregister(cmx270_pcmcia_device); |
| 103 | } |