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Diffstat (limited to 'arch/arm/mach-omap2/common-board-devices.c')
-rw-r--r--arch/arm/mach-omap2/common-board-devices.c80
1 files changed, 20 insertions, 60 deletions
diff --git a/arch/arm/mach-omap2/common-board-devices.c b/arch/arm/mach-omap2/common-board-devices.c
index 48daac2581b4..d246efd9f734 100644
--- a/arch/arm/mach-omap2/common-board-devices.c
+++ b/arch/arm/mach-omap2/common-board-devices.c
@@ -25,7 +25,6 @@
25#include <linux/spi/ads7846.h> 25#include <linux/spi/ads7846.h>
26 26
27#include <linux/platform_data/spi-omap2-mcspi.h> 27#include <linux/platform_data/spi-omap2-mcspi.h>
28#include <linux/platform_data/mtd-nand-omap2.h>
29 28
30#include "common.h" 29#include "common.h"
31#include "common-board-devices.h" 30#include "common-board-devices.h"
@@ -64,30 +63,36 @@ void __init omap_ads7846_init(int bus_num, int gpio_pendown, int gpio_debounce,
64 struct spi_board_info *spi_bi = &ads7846_spi_board_info; 63 struct spi_board_info *spi_bi = &ads7846_spi_board_info;
65 int err; 64 int err;
66 65
67 err = gpio_request_one(gpio_pendown, GPIOF_IN, "TSPenDown"); 66 /*
68 if (err) { 67 * If a board defines get_pendown_state() function, request the pendown
69 pr_err("Couldn't obtain gpio for TSPenDown: %d\n", err); 68 * GPIO and set the GPIO debounce time.
70 return; 69 * If a board does not define the get_pendown_state() function, then
71 } 70 * the ads7846 driver will setup the pendown GPIO itself.
71 */
72 if (board_pdata && board_pdata->get_pendown_state) {
73 err = gpio_request_one(gpio_pendown, GPIOF_IN, "TSPenDown");
74 if (err) {
75 pr_err("Couldn't obtain gpio for TSPenDown: %d\n", err);
76 return;
77 }
78
79 if (gpio_debounce)
80 gpio_set_debounce(gpio_pendown, gpio_debounce);
72 81
73 if (gpio_debounce) 82 gpio_export(gpio_pendown, 0);
74 gpio_set_debounce(gpio_pendown, gpio_debounce); 83 }
75 84
76 spi_bi->bus_num = bus_num; 85 spi_bi->bus_num = bus_num;
77 spi_bi->irq = gpio_to_irq(gpio_pendown); 86 spi_bi->irq = gpio_to_irq(gpio_pendown);
78 87
88 ads7846_config.gpio_pendown = gpio_pendown;
89
79 if (board_pdata) { 90 if (board_pdata) {
80 board_pdata->gpio_pendown = gpio_pendown; 91 board_pdata->gpio_pendown = gpio_pendown;
92 board_pdata->gpio_pendown_debounce = gpio_debounce;
81 spi_bi->platform_data = board_pdata; 93 spi_bi->platform_data = board_pdata;
82 if (board_pdata->get_pendown_state)
83 gpio_export(gpio_pendown, 0);
84 } else {
85 ads7846_config.gpio_pendown = gpio_pendown;
86 } 94 }
87 95
88 if (!board_pdata || (board_pdata && !board_pdata->get_pendown_state))
89 gpio_free(gpio_pendown);
90
91 spi_register_board_info(&ads7846_spi_board_info, 1); 96 spi_register_board_info(&ads7846_spi_board_info, 1);
92} 97}
93#else 98#else
@@ -96,48 +101,3 @@ void __init omap_ads7846_init(int bus_num, int gpio_pendown, int gpio_debounce,
96{ 101{
97} 102}
98#endif 103#endif
99
100#if defined(CONFIG_MTD_NAND_OMAP2) || defined(CONFIG_MTD_NAND_OMAP2_MODULE)
101static struct omap_nand_platform_data nand_data;
102
103void __init omap_nand_flash_init(int options, struct mtd_partition *parts,
104 int nr_parts)
105{
106 u8 cs = 0;
107 u8 nandcs = GPMC_CS_NUM + 1;
108
109 /* find out the chip-select on which NAND exists */
110 while (cs < GPMC_CS_NUM) {
111 u32 ret = 0;
112 ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1);
113
114 if ((ret & 0xC00) == 0x800) {
115 printk(KERN_INFO "Found NAND on CS%d\n", cs);
116 if (nandcs > GPMC_CS_NUM)
117 nandcs = cs;
118 }
119 cs++;
120 }
121
122 if (nandcs > GPMC_CS_NUM) {
123 pr_info("NAND: Unable to find configuration in GPMC\n");
124 return;
125 }
126
127 if (nandcs < GPMC_CS_NUM) {
128 nand_data.cs = nandcs;
129 nand_data.parts = parts;
130 nand_data.nr_parts = nr_parts;
131 nand_data.devsize = options;
132
133 printk(KERN_INFO "Registering NAND on CS%d\n", nandcs);
134 if (gpmc_nand_init(&nand_data) < 0)
135 printk(KERN_ERR "Unable to register NAND device\n");
136 }
137}
138#else
139void __init omap_nand_flash_init(int options, struct mtd_partition *parts,
140 int nr_parts)
141{
142}
143#endif