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authorMike Rapoport <mike@compulab.co.il>2008-06-17 04:48:03 -0400
committerRussell King <rmk+kernel@arm.linux.org.uk>2008-07-09 16:33:49 -0400
commit779c545d945eeb7778c27c531bae58df7767229d (patch)
treecba44990c0d4edc57f636f542182a4b9a6192a32
parent2f01a973729712c373ccc8acde4d218c38f3029a (diff)
[ARM] 5104/1: CM-X270: PCMCIA updates
Convert to use gpio_lib interface. Remove support for second PCMCIA slot to avoid run-time conflicts with MMC/SD because of shared GPIO Signed-off-by: Mike Rapoport <mike@compulab.co.il> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
-rw-r--r--drivers/pcmcia/pxa2xx_cm_x270.c93
1 files changed, 27 insertions, 66 deletions
diff --git a/drivers/pcmcia/pxa2xx_cm_x270.c b/drivers/pcmcia/pxa2xx_cm_x270.c
index f123fce65f2e..bb95db7d2b76 100644
--- a/drivers/pcmcia/pxa2xx_cm_x270.c
+++ b/drivers/pcmcia/pxa2xx_cm_x270.c
@@ -5,83 +5,60 @@
5 * it under the terms of the GNU General Public License version 2 as 5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation. 6 * published by the Free Software Foundation.
7 * 7 *
8 * Compulab Ltd., 2003, 2007 8 * Compulab Ltd., 2003, 2007, 2008
9 * Mike Rapoport <mike@compulab.co.il> 9 * Mike Rapoport <mike@compulab.co.il>
10 * 10 *
11 */ 11 */
12 12
13#include <linux/kernel.h>
14#include <linux/sched.h>
15#include <linux/platform_device.h> 13#include <linux/platform_device.h>
16#include <linux/irq.h> 14#include <linux/irq.h>
17#include <linux/delay.h> 15#include <linux/delay.h>
16#include <linux/gpio.h>
18 17
19#include <pcmcia/ss.h>
20#include <asm/hardware.h>
21#include <asm/mach-types.h> 18#include <asm/mach-types.h>
22
23#include <asm/arch/pxa-regs.h> 19#include <asm/arch/pxa-regs.h>
24#include <asm/arch/pxa2xx-gpio.h>
25#include <asm/arch/cm-x270.h>
26 20
27#include "soc_common.h" 21#include "soc_common.h"
28 22
23#define GPIO_PCMCIA_S0_CD_VALID (84)
24#define GPIO_PCMCIA_S0_RDYINT (82)
25#define GPIO_PCMCIA_RESET (53)
26
27#define PCMCIA_S0_CD_VALID IRQ_GPIO(GPIO_PCMCIA_S0_CD_VALID)
28#define PCMCIA_S0_RDYINT IRQ_GPIO(GPIO_PCMCIA_S0_RDYINT)
29
30
29static struct pcmcia_irqs irqs[] = { 31static struct pcmcia_irqs irqs[] = {
30 { 0, PCMCIA_S0_CD_VALID, "PCMCIA0 CD" }, 32 { 0, PCMCIA_S0_CD_VALID, "PCMCIA0 CD" },
31 { 1, PCMCIA_S1_CD_VALID, "PCMCIA1 CD" },
32}; 33};
33 34
34static int cmx270_pcmcia_hw_init(struct soc_pcmcia_socket *skt) 35static int cmx270_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
35{ 36{
36 GPSR(GPIO48_nPOE) = GPIO_bit(GPIO48_nPOE) | 37 int ret = gpio_request(GPIO_PCMCIA_RESET, "PCCard reset");
37 GPIO_bit(GPIO49_nPWE) | 38 if (ret)
38 GPIO_bit(GPIO50_nPIOR) | 39 return ret;
39 GPIO_bit(GPIO51_nPIOW) | 40 gpio_direction_output(GPIO_PCMCIA_RESET, 0);
40 GPIO_bit(GPIO85_nPCE_1) | 41
41 GPIO_bit(GPIO54_nPCE_2); 42 skt->irq = PCMCIA_S0_RDYINT;
42 43 ret = soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs));
43 pxa_gpio_mode(GPIO48_nPOE_MD); 44 if (!ret)
44 pxa_gpio_mode(GPIO49_nPWE_MD); 45 gpio_free(GPIO_PCMCIA_RESET);
45 pxa_gpio_mode(GPIO50_nPIOR_MD); 46
46 pxa_gpio_mode(GPIO51_nPIOW_MD); 47 return ret;
47 pxa_gpio_mode(GPIO85_nPCE_1_MD);
48 pxa_gpio_mode(GPIO54_nPCE_2_MD);
49 pxa_gpio_mode(GPIO55_nPREG_MD);
50 pxa_gpio_mode(GPIO56_nPWAIT_MD);
51 pxa_gpio_mode(GPIO57_nIOIS16_MD);
52
53 /* Reset signal */
54 pxa_gpio_mode(GPIO53_nPCE_2 | GPIO_OUT);
55 GPCR(GPIO53_nPCE_2) = GPIO_bit(GPIO53_nPCE_2);
56
57 set_irq_type(PCMCIA_S0_CD_VALID, IRQ_TYPE_EDGE_BOTH);
58 set_irq_type(PCMCIA_S1_CD_VALID, IRQ_TYPE_EDGE_BOTH);
59
60 /* irq's for slots: */
61 set_irq_type(PCMCIA_S0_RDYINT, IRQ_TYPE_EDGE_FALLING);
62 set_irq_type(PCMCIA_S1_RDYINT, IRQ_TYPE_EDGE_FALLING);
63
64 skt->irq = (skt->nr == 0) ? PCMCIA_S0_RDYINT : PCMCIA_S1_RDYINT;
65 return soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs));
66} 48}
67 49
68static void cmx270_pcmcia_shutdown(struct soc_pcmcia_socket *skt) 50static void cmx270_pcmcia_shutdown(struct soc_pcmcia_socket *skt)
69{ 51{
70 soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs)); 52 soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs));
71 53 gpio_free(GPIO_PCMCIA_RESET);
72 set_irq_type(IRQ_TO_GPIO(PCMCIA_S0_CD_VALID), IRQ_TYPE_NONE);
73 set_irq_type(IRQ_TO_GPIO(PCMCIA_S1_CD_VALID), IRQ_TYPE_NONE);
74
75 set_irq_type(IRQ_TO_GPIO(PCMCIA_S0_RDYINT), IRQ_TYPE_NONE);
76 set_irq_type(IRQ_TO_GPIO(PCMCIA_S1_RDYINT), IRQ_TYPE_NONE);
77} 54}
78 55
79 56
80static void cmx270_pcmcia_socket_state(struct soc_pcmcia_socket *skt, 57static void cmx270_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
81 struct pcmcia_state *state) 58 struct pcmcia_state *state)
82{ 59{
83 state->detect = (PCC_DETECT(skt->nr) == 0) ? 1 : 0; 60 state->detect = (gpio_get_value(GPIO_PCMCIA_S0_CD_VALID) == 0) ? 1 : 0;
84 state->ready = (PCC_READY(skt->nr) == 0) ? 0 : 1; 61 state->ready = (gpio_get_value(GPIO_PCMCIA_S0_RDYINT) == 0) ? 0 : 1;
85 state->bvd1 = 1; 62 state->bvd1 = 1;
86 state->bvd2 = 1; 63 state->bvd2 = 1;
87 state->vs_3v = 0; 64 state->vs_3v = 0;
@@ -93,32 +70,16 @@ static void cmx270_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
93static int cmx270_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, 70static int cmx270_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
94 const socket_state_t *state) 71 const socket_state_t *state)
95{ 72{
96 GPSR(GPIO49_nPWE) = GPIO_bit(GPIO49_nPWE);
97 pxa_gpio_mode(GPIO49_nPWE | GPIO_OUT);
98
99 switch (skt->nr) { 73 switch (skt->nr) {
100 case 0: 74 case 0:
101 if (state->flags & SS_RESET) { 75 if (state->flags & SS_RESET) {
102 GPCR(GPIO49_nPWE) = GPIO_bit(GPIO49_nPWE); 76 gpio_set_value(GPIO_PCMCIA_RESET, 1);
103 GPSR(GPIO53_nPCE_2) = GPIO_bit(GPIO53_nPCE_2);
104 udelay(10);
105 GPCR(GPIO53_nPCE_2) = GPIO_bit(GPIO53_nPCE_2);
106 GPSR(GPIO49_nPWE) = GPIO_bit(GPIO49_nPWE);
107 }
108 break;
109 case 1:
110 if (state->flags & SS_RESET) {
111 GPCR(GPIO49_nPWE) = GPIO_bit(GPIO49_nPWE);
112 GPSR(GPIO53_nPCE_2) = GPIO_bit(GPIO53_nPCE_2);
113 udelay(10); 77 udelay(10);
114 GPCR(GPIO53_nPCE_2) = GPIO_bit(GPIO53_nPCE_2); 78 gpio_set_value(GPIO_PCMCIA_RESET, 0);
115 GPSR(GPIO49_nPWE) = GPIO_bit(GPIO49_nPWE);
116 } 79 }
117 break; 80 break;
118 } 81 }
119 82
120 pxa_gpio_mode(GPIO49_nPWE_MD);
121
122 return 0; 83 return 0;
123} 84}
124 85
@@ -139,7 +100,7 @@ static struct pcmcia_low_level cmx270_pcmcia_ops __initdata = {
139 .configure_socket = cmx270_pcmcia_configure_socket, 100 .configure_socket = cmx270_pcmcia_configure_socket,
140 .socket_init = cmx270_pcmcia_socket_init, 101 .socket_init = cmx270_pcmcia_socket_init,
141 .socket_suspend = cmx270_pcmcia_socket_suspend, 102 .socket_suspend = cmx270_pcmcia_socket_suspend,
142 .nr = 2, 103 .nr = 1,
143}; 104};
144 105
145static struct platform_device *cmx270_pcmcia_device; 106static struct platform_device *cmx270_pcmcia_device;