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9 | 9 | #include <asm/arch/gpio.h>
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10 | 10 | #include <extcon.h>
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11 | 11 | #include <linux/libfdt.h>
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| 12 | +#include <mmc.h> |
12 | 13 | #include <power/max77686_pmic.h>
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13 | 14 | #include <power/max77693_muic.h>
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14 | 15 | #include <power/pmic.h>
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18 | 19 |
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19 | 20 | DECLARE_GLOBAL_DATA_PTR;
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20 | 21 |
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21 |
| -int get_board_rev(void) |
| 22 | +static uint64_t board_serial = 0; |
| 23 | +static char board_rev = 0xff; |
| 24 | +static char board_serial_str[17]; |
| 25 | + |
| 26 | +void board_load_info(void) |
22 | 27 | {
|
23 |
| - // TODO: GPM1[5:2] |
24 |
| - return 0; |
| 28 | + struct mmc *emmc = find_mmc_device(2); |
| 29 | + static const int rev_gpios[] = { |
| 30 | + EXYNOS4X12_GPIO_M15, |
| 31 | + EXYNOS4X12_GPIO_M14, |
| 32 | + EXYNOS4X12_GPIO_M13, |
| 33 | + EXYNOS4X12_GPIO_M12, |
| 34 | + }; |
| 35 | + |
| 36 | + board_rev = 0; |
| 37 | + |
| 38 | + for (int i = 0; i < ARRAY_SIZE(rev_gpios); i++) { |
| 39 | + gpio_request(rev_gpios[i], "HW_REV[0..3]"); |
| 40 | + gpio_cfg_pin(rev_gpios[i], S5P_GPIO_INPUT); |
| 41 | + gpio_set_pull(rev_gpios[i], S5P_GPIO_PULL_DOWN); |
| 42 | + |
| 43 | + board_rev <<= 1; |
| 44 | + board_rev |= gpio_get_value(rev_gpios[i]); |
| 45 | + } |
| 46 | + |
| 47 | + if (!emmc) { |
| 48 | + pr_err("%s: couldn't get serial number - no eMMC device found!\n", __func__); |
| 49 | + sprintf(board_serial_str, "%16x", 0); |
| 50 | + return; |
| 51 | + } |
| 52 | + |
| 53 | + if (mmc_init(emmc)) { |
| 54 | + pr_err("%s: eMMC init failed!\n", __func__); |
| 55 | + } else { |
| 56 | + board_serial = ((uint64_t)emmc->cid[2] << 32) | emmc->cid[3]; |
| 57 | + } |
| 58 | + sprintf(board_serial_str, "%16llx", board_serial); |
| 59 | + env_set("serial#", board_serial_str); |
| 60 | +} |
| 61 | + |
| 62 | +int get_board_rev(void) { |
| 63 | + if (board_rev == 0xff) |
| 64 | + board_load_info(); |
| 65 | + |
| 66 | + return board_rev; |
25 | 67 | }
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26 | 68 |
|
27 | 69 | static void board_gpio_init(void)
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@@ -169,3 +211,10 @@ int exynos_init(void)
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169 | 211 |
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170 | 212 | return 0;
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171 | 213 | }
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| 214 | + |
| 215 | +int exynos_late_init(void) |
| 216 | +{ |
| 217 | + board_load_info(); |
| 218 | + |
| 219 | + return 0; |
| 220 | +} |
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