Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 1 | /* |
| 2 | * SuperH Mobile MERAM Driver for SuperH Mobile LCDC Driver |
| 3 | * |
| 4 | * Copyright (c) 2011 Damian Hobson-Garcia <dhobsong@igel.co.jp> |
| 5 | * Takanari Hayama <taki@igel.co.jp> |
| 6 | * |
| 7 | * This file is subject to the terms and conditions of the GNU General Public |
| 8 | * License. See the file "COPYING" in the main directory of this archive |
| 9 | * for more details. |
| 10 | */ |
| 11 | |
Laurent Pinchart | 7554340 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 12 | #include <linux/device.h> |
Laurent Pinchart | 974d250b | 2011-09-19 11:40:31 +0200 | [diff] [blame^] | 13 | #include <linux/genalloc.h> |
Laurent Pinchart | 7554340 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 14 | #include <linux/io.h> |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 15 | #include <linux/kernel.h> |
| 16 | #include <linux/module.h> |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 17 | #include <linux/platform_device.h> |
Laurent Pinchart | 7554340 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 18 | #include <linux/pm_runtime.h> |
| 19 | #include <linux/slab.h> |
| 20 | |
Laurent Pinchart | 8a20974 | 2011-07-13 12:13:47 +0200 | [diff] [blame] | 21 | #include <video/sh_mobile_meram.h> |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 22 | |
Laurent Pinchart | 7554340 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 23 | /* ----------------------------------------------------------------------------- |
| 24 | * MERAM registers |
| 25 | */ |
| 26 | |
Laurent Pinchart | f0a260f | 2011-07-13 12:13:47 +0200 | [diff] [blame] | 27 | #define MEVCR1 0x4 |
| 28 | #define MEVCR1_RST (1 << 31) |
| 29 | #define MEVCR1_WD (1 << 30) |
| 30 | #define MEVCR1_AMD1 (1 << 29) |
| 31 | #define MEVCR1_AMD0 (1 << 28) |
| 32 | #define MEQSEL1 0x40 |
| 33 | #define MEQSEL2 0x44 |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 34 | |
Laurent Pinchart | f0a260f | 2011-07-13 12:13:47 +0200 | [diff] [blame] | 35 | #define MExxCTL 0x400 |
| 36 | #define MExxCTL_BV (1 << 31) |
| 37 | #define MExxCTL_BSZ_SHIFT 28 |
| 38 | #define MExxCTL_MSAR_MASK (0x7ff << MExxCTL_MSAR_SHIFT) |
| 39 | #define MExxCTL_MSAR_SHIFT 16 |
| 40 | #define MExxCTL_NXT_MASK (0x1f << MExxCTL_NXT_SHIFT) |
| 41 | #define MExxCTL_NXT_SHIFT 11 |
| 42 | #define MExxCTL_WD1 (1 << 10) |
| 43 | #define MExxCTL_WD0 (1 << 9) |
| 44 | #define MExxCTL_WS (1 << 8) |
| 45 | #define MExxCTL_CB (1 << 7) |
| 46 | #define MExxCTL_WBF (1 << 6) |
| 47 | #define MExxCTL_WF (1 << 5) |
| 48 | #define MExxCTL_RF (1 << 4) |
| 49 | #define MExxCTL_CM (1 << 3) |
| 50 | #define MExxCTL_MD_READ (1 << 0) |
| 51 | #define MExxCTL_MD_WRITE (2 << 0) |
| 52 | #define MExxCTL_MD_ICB_WB (3 << 0) |
| 53 | #define MExxCTL_MD_ICB (4 << 0) |
| 54 | #define MExxCTL_MD_FB (7 << 0) |
| 55 | #define MExxCTL_MD_MASK (7 << 0) |
| 56 | #define MExxBSIZE 0x404 |
| 57 | #define MExxBSIZE_RCNT_SHIFT 28 |
| 58 | #define MExxBSIZE_YSZM1_SHIFT 16 |
| 59 | #define MExxBSIZE_XSZM1_SHIFT 0 |
| 60 | #define MExxMNCF 0x408 |
| 61 | #define MExxMNCF_KWBNM_SHIFT 28 |
| 62 | #define MExxMNCF_KRBNM_SHIFT 24 |
| 63 | #define MExxMNCF_BNM_SHIFT 16 |
| 64 | #define MExxMNCF_XBV (1 << 15) |
| 65 | #define MExxMNCF_CPL_YCBCR444 (1 << 12) |
| 66 | #define MExxMNCF_CPL_YCBCR420 (2 << 12) |
| 67 | #define MExxMNCF_CPL_YCBCR422 (3 << 12) |
| 68 | #define MExxMNCF_CPL_MSK (3 << 12) |
| 69 | #define MExxMNCF_BL (1 << 2) |
| 70 | #define MExxMNCF_LNM_SHIFT 0 |
| 71 | #define MExxSARA 0x410 |
| 72 | #define MExxSARB 0x414 |
| 73 | #define MExxSBSIZE 0x418 |
| 74 | #define MExxSBSIZE_HDV (1 << 31) |
| 75 | #define MExxSBSIZE_HSZ16 (0 << 28) |
| 76 | #define MExxSBSIZE_HSZ32 (1 << 28) |
| 77 | #define MExxSBSIZE_HSZ64 (2 << 28) |
| 78 | #define MExxSBSIZE_HSZ128 (3 << 28) |
| 79 | #define MExxSBSIZE_SBSIZZ_SHIFT 0 |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 80 | |
Laurent Pinchart | f0a260f | 2011-07-13 12:13:47 +0200 | [diff] [blame] | 81 | #define MERAM_MExxCTL_VAL(next, addr) \ |
| 82 | ((((next) << MExxCTL_NXT_SHIFT) & MExxCTL_NXT_MASK) | \ |
| 83 | (((addr) << MExxCTL_MSAR_SHIFT) & MExxCTL_MSAR_MASK)) |
| 84 | #define MERAM_MExxBSIZE_VAL(rcnt, yszm1, xszm1) \ |
| 85 | (((rcnt) << MExxBSIZE_RCNT_SHIFT) | \ |
| 86 | ((yszm1) << MExxBSIZE_YSZM1_SHIFT) | \ |
| 87 | ((xszm1) << MExxBSIZE_XSZM1_SHIFT)) |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 88 | |
Laurent Pinchart | 762f7cc | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 89 | static const unsigned long common_regs[] = { |
Damian Hobson-Garcia | 0b3bb77 | 2011-06-22 07:49:51 +0200 | [diff] [blame] | 90 | MEVCR1, |
| 91 | MEQSEL1, |
| 92 | MEQSEL2, |
| 93 | }; |
Laurent Pinchart | 7554340 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 94 | #define MERAM_REGS_SIZE ARRAY_SIZE(common_regs) |
Damian Hobson-Garcia | 0b3bb77 | 2011-06-22 07:49:51 +0200 | [diff] [blame] | 95 | |
Laurent Pinchart | 762f7cc | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 96 | static const unsigned long icb_regs[] = { |
Damian Hobson-Garcia | 0b3bb77 | 2011-06-22 07:49:51 +0200 | [diff] [blame] | 97 | MExxCTL, |
| 98 | MExxBSIZE, |
| 99 | MExxMNCF, |
| 100 | MExxSARA, |
| 101 | MExxSARB, |
| 102 | MExxSBSIZE, |
| 103 | }; |
| 104 | #define ICB_REGS_SIZE ARRAY_SIZE(icb_regs) |
| 105 | |
Laurent Pinchart | 2a618e0 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 106 | /* |
| 107 | * sh_mobile_meram_icb - MERAM ICB information |
| 108 | * @regs: Registers cache |
Laurent Pinchart | 974d250b | 2011-09-19 11:40:31 +0200 | [diff] [blame^] | 109 | * @offset: MERAM block offset |
| 110 | * @size: MERAM block size in bytes |
Laurent Pinchart | 2a618e0 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 111 | * @cache_unit: Bytes to cache per ICB |
| 112 | * @pixelformat: Video pixel format of the data stored in the ICB |
| 113 | * @current_reg: Which of Start Address Register A (0) or B (1) is in use |
| 114 | */ |
| 115 | struct sh_mobile_meram_icb { |
| 116 | unsigned long regs[ICB_REGS_SIZE]; |
Laurent Pinchart | 974d250b | 2011-09-19 11:40:31 +0200 | [diff] [blame^] | 117 | unsigned long offset; |
| 118 | unsigned int size; |
Laurent Pinchart | 2a618e0 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 119 | |
Laurent Pinchart | 2a618e0 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 120 | unsigned int cache_unit; |
| 121 | unsigned int pixelformat; |
| 122 | unsigned int current_reg; |
| 123 | }; |
| 124 | |
Laurent Pinchart | 7554340 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 125 | #define MERAM_ICB_NUM 32 |
| 126 | |
Laurent Pinchart | 2a618e0 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 127 | /* |
| 128 | * sh_mobile_meram_priv - MERAM device |
| 129 | * @base: Registers base address |
Laurent Pinchart | 974d250b | 2011-09-19 11:40:31 +0200 | [diff] [blame^] | 130 | * @meram: MERAM physical address |
Laurent Pinchart | 2a618e0 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 131 | * @regs: Registers cache |
| 132 | * @lock: Protects used_icb and icbs |
| 133 | * @used_icb: Bitmask of used ICBs |
| 134 | * @icbs: ICBs |
Laurent Pinchart | 974d250b | 2011-09-19 11:40:31 +0200 | [diff] [blame^] | 135 | * @pool: Allocation pool to manage the MERAM |
Laurent Pinchart | 2a618e0 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 136 | */ |
Damian Hobson-Garcia | 0aa492b | 2011-06-22 07:49:50 +0200 | [diff] [blame] | 137 | struct sh_mobile_meram_priv { |
Laurent Pinchart | 2a618e0 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 138 | void __iomem *base; |
Laurent Pinchart | 974d250b | 2011-09-19 11:40:31 +0200 | [diff] [blame^] | 139 | unsigned long meram; |
Laurent Pinchart | 7554340 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 140 | unsigned long regs[MERAM_REGS_SIZE]; |
Laurent Pinchart | 2a618e0 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 141 | |
| 142 | struct mutex lock; |
| 143 | unsigned long used_icb; |
Laurent Pinchart | 7554340 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 144 | struct sh_mobile_meram_icb icbs[MERAM_ICB_NUM]; |
Laurent Pinchart | 974d250b | 2011-09-19 11:40:31 +0200 | [diff] [blame^] | 145 | |
| 146 | struct gen_pool *pool; |
Damian Hobson-Garcia | 0aa492b | 2011-06-22 07:49:50 +0200 | [diff] [blame] | 147 | }; |
| 148 | |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 149 | /* settings */ |
Laurent Pinchart | 974d250b | 2011-09-19 11:40:31 +0200 | [diff] [blame^] | 150 | #define MERAM_GRANULARITY 1024 |
Laurent Pinchart | 7554340 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 151 | #define MERAM_SEC_LINE 15 |
| 152 | #define MERAM_LINE_WIDTH 2048 |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 153 | |
Laurent Pinchart | 7554340 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 154 | /* ----------------------------------------------------------------------------- |
| 155 | * Registers access |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 156 | */ |
| 157 | |
Laurent Pinchart | f0a260f | 2011-07-13 12:13:47 +0200 | [diff] [blame] | 158 | #define MERAM_ICB_OFFSET(base, idx, off) ((base) + (off) + (idx) * 0x20) |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 159 | |
Laurent Pinchart | 0543283 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 160 | static inline void meram_write_icb(void __iomem *base, unsigned int idx, |
| 161 | unsigned int off, unsigned long val) |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 162 | { |
| 163 | iowrite32(val, MERAM_ICB_OFFSET(base, idx, off)); |
| 164 | } |
| 165 | |
Laurent Pinchart | 0543283 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 166 | static inline unsigned long meram_read_icb(void __iomem *base, unsigned int idx, |
| 167 | unsigned int off) |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 168 | { |
| 169 | return ioread32(MERAM_ICB_OFFSET(base, idx, off)); |
| 170 | } |
| 171 | |
Laurent Pinchart | 0543283 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 172 | static inline void meram_write_reg(void __iomem *base, unsigned int off, |
| 173 | unsigned long val) |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 174 | { |
| 175 | iowrite32(val, base + off); |
| 176 | } |
| 177 | |
Laurent Pinchart | 0543283 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 178 | static inline unsigned long meram_read_reg(void __iomem *base, unsigned int off) |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 179 | { |
| 180 | return ioread32(base + off); |
| 181 | } |
| 182 | |
Laurent Pinchart | 7554340 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 183 | /* ----------------------------------------------------------------------------- |
| 184 | * Allocation |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 185 | */ |
| 186 | |
Laurent Pinchart | 7554340 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 187 | /* Check if there's no overlaps in MERAM allocation. */ |
Laurent Pinchart | 762f7cc | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 188 | static int meram_check_overlap(struct sh_mobile_meram_priv *priv, |
| 189 | const struct sh_mobile_meram_icb_cfg *new) |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 190 | { |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 191 | /* valid ICB? */ |
| 192 | if (new->marker_icb & ~0x1f || new->cache_icb & ~0x1f) |
| 193 | return 1; |
| 194 | |
| 195 | if (test_bit(new->marker_icb, &priv->used_icb) || |
Laurent Pinchart | 2a618e0 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 196 | test_bit(new->cache_icb, &priv->used_icb)) |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 197 | return 1; |
| 198 | |
Laurent Pinchart | 974d250b | 2011-09-19 11:40:31 +0200 | [diff] [blame^] | 199 | return 0; |
| 200 | } |
Laurent Pinchart | 2a618e0 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 201 | |
Laurent Pinchart | 974d250b | 2011-09-19 11:40:31 +0200 | [diff] [blame^] | 202 | /* Allocate memory for the ICBs and mark them as used. */ |
| 203 | static int meram_alloc(struct sh_mobile_meram_priv *priv, |
| 204 | const struct sh_mobile_meram_icb_cfg *new, |
| 205 | int pixelformat) |
| 206 | { |
| 207 | struct sh_mobile_meram_icb *marker = &priv->icbs[new->marker_icb]; |
| 208 | unsigned long mem; |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 209 | |
Laurent Pinchart | 974d250b | 2011-09-19 11:40:31 +0200 | [diff] [blame^] | 210 | mem = gen_pool_alloc(priv->pool, new->meram_size * 1024); |
| 211 | if (mem == 0) |
| 212 | return -ENOMEM; |
| 213 | |
| 214 | __set_bit(new->marker_icb, &priv->used_icb); |
| 215 | __set_bit(new->cache_icb, &priv->used_icb); |
| 216 | |
| 217 | marker->offset = mem - priv->meram; |
| 218 | marker->size = new->meram_size * 1024; |
| 219 | marker->current_reg = 1; |
| 220 | marker->pixelformat = pixelformat; |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 221 | |
| 222 | return 0; |
| 223 | } |
| 224 | |
Laurent Pinchart | 7554340 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 225 | /* Unmark the specified ICB as used. */ |
Laurent Pinchart | 974d250b | 2011-09-19 11:40:31 +0200 | [diff] [blame^] | 226 | static void meram_free(struct sh_mobile_meram_priv *priv, |
| 227 | const struct sh_mobile_meram_icb_cfg *icb) |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 228 | { |
Laurent Pinchart | 974d250b | 2011-09-19 11:40:31 +0200 | [diff] [blame^] | 229 | struct sh_mobile_meram_icb *marker = &priv->icbs[icb->marker_icb]; |
| 230 | |
| 231 | gen_pool_free(priv->pool, priv->meram + marker->offset, marker->size); |
| 232 | |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 233 | __clear_bit(icb->marker_icb, &priv->used_icb); |
| 234 | __clear_bit(icb->cache_icb, &priv->used_icb); |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 235 | } |
| 236 | |
Laurent Pinchart | 7554340 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 237 | /* Is this a YCbCr(NV12, NV16 or NV24) colorspace? */ |
Laurent Pinchart | 762f7cc | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 238 | static int is_nvcolor(int cspace) |
Damian | 3fedd2a | 2011-05-18 11:10:08 +0000 | [diff] [blame] | 239 | { |
| 240 | if (cspace == SH_MOBILE_MERAM_PF_NV || |
Laurent Pinchart | 2a618e0 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 241 | cspace == SH_MOBILE_MERAM_PF_NV24) |
Damian | 3fedd2a | 2011-05-18 11:10:08 +0000 | [diff] [blame] | 242 | return 1; |
| 243 | return 0; |
| 244 | } |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 245 | |
Laurent Pinchart | 7554340 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 246 | /* Set the next address to fetch. */ |
Laurent Pinchart | 762f7cc | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 247 | static void meram_set_next_addr(struct sh_mobile_meram_priv *priv, |
| 248 | const struct sh_mobile_meram_cfg *cfg, |
| 249 | unsigned long base_addr_y, |
| 250 | unsigned long base_addr_c) |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 251 | { |
Laurent Pinchart | 2a618e0 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 252 | struct sh_mobile_meram_icb *icb = &priv->icbs[cfg->icb[0].marker_icb]; |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 253 | unsigned long target; |
| 254 | |
Laurent Pinchart | 2a618e0 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 255 | icb->current_reg ^= 1; |
| 256 | target = icb->current_reg ? MExxSARB : MExxSARA; |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 257 | |
| 258 | /* set the next address to fetch */ |
Laurent Pinchart | 2a618e0 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 259 | meram_write_icb(priv->base, cfg->icb[0].cache_icb, target, |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 260 | base_addr_y); |
| 261 | meram_write_icb(priv->base, cfg->icb[0].marker_icb, target, |
Laurent Pinchart | 2a618e0 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 262 | base_addr_y + |
| 263 | priv->icbs[cfg->icb[0].marker_icb].cache_unit); |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 264 | |
Laurent Pinchart | 2a618e0 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 265 | if (is_nvcolor(icb->pixelformat)) { |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 266 | meram_write_icb(priv->base, cfg->icb[1].cache_icb, target, |
| 267 | base_addr_c); |
| 268 | meram_write_icb(priv->base, cfg->icb[1].marker_icb, target, |
Laurent Pinchart | 2a618e0 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 269 | base_addr_c + |
| 270 | priv->icbs[cfg->icb[1].marker_icb].cache_unit); |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 271 | } |
| 272 | } |
| 273 | |
Laurent Pinchart | 7554340 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 274 | /* Get the next ICB address. */ |
Laurent Pinchart | 762f7cc | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 275 | static void |
Laurent Pinchart | 2a618e0 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 276 | meram_get_next_icb_addr(struct sh_mobile_meram_info *pdata, |
| 277 | const struct sh_mobile_meram_cfg *cfg, |
| 278 | unsigned long *icb_addr_y, unsigned long *icb_addr_c) |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 279 | { |
Laurent Pinchart | 2a618e0 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 280 | struct sh_mobile_meram_priv *priv = pdata->priv; |
| 281 | struct sh_mobile_meram_icb *icb = &priv->icbs[cfg->icb[0].marker_icb]; |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 282 | unsigned long icb_offset; |
| 283 | |
| 284 | if (pdata->addr_mode == SH_MOBILE_MERAM_MODE0) |
Laurent Pinchart | 2a618e0 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 285 | icb_offset = 0x80000000 | (icb->current_reg << 29); |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 286 | else |
Laurent Pinchart | 2a618e0 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 287 | icb_offset = 0xc0000000 | (icb->current_reg << 23); |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 288 | |
| 289 | *icb_addr_y = icb_offset | (cfg->icb[0].marker_icb << 24); |
Laurent Pinchart | 2a618e0 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 290 | if (is_nvcolor(icb->pixelformat)) |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 291 | *icb_addr_c = icb_offset | (cfg->icb[1].marker_icb << 24); |
| 292 | } |
| 293 | |
| 294 | #define MERAM_CALC_BYTECOUNT(x, y) \ |
| 295 | (((x) * (y) + (MERAM_LINE_WIDTH - 1)) & ~(MERAM_LINE_WIDTH - 1)) |
| 296 | |
Laurent Pinchart | 7554340 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 297 | /* Initialize MERAM. */ |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 298 | static int meram_init(struct sh_mobile_meram_priv *priv, |
Laurent Pinchart | 2a618e0 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 299 | const struct sh_mobile_meram_icb_cfg *icb, |
Laurent Pinchart | 0543283 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 300 | unsigned int xres, unsigned int yres, |
| 301 | unsigned int *out_pitch) |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 302 | { |
Laurent Pinchart | 974d250b | 2011-09-19 11:40:31 +0200 | [diff] [blame^] | 303 | struct sh_mobile_meram_icb *marker = &priv->icbs[icb->marker_icb]; |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 304 | unsigned long total_byte_count = MERAM_CALC_BYTECOUNT(xres, yres); |
| 305 | unsigned long bnm; |
Laurent Pinchart | 0543283 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 306 | unsigned int lcdc_pitch; |
| 307 | unsigned int xpitch; |
| 308 | unsigned int line_cnt; |
| 309 | unsigned int save_lines; |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 310 | |
| 311 | /* adjust pitch to 1024, 2048, 4096 or 8192 */ |
| 312 | lcdc_pitch = (xres - 1) | 1023; |
| 313 | lcdc_pitch = lcdc_pitch | (lcdc_pitch >> 1); |
| 314 | lcdc_pitch = lcdc_pitch | (lcdc_pitch >> 2); |
| 315 | lcdc_pitch += 1; |
| 316 | |
| 317 | /* derive settings */ |
| 318 | if (lcdc_pitch == 8192 && yres >= 1024) { |
| 319 | lcdc_pitch = xpitch = MERAM_LINE_WIDTH; |
| 320 | line_cnt = total_byte_count >> 11; |
| 321 | *out_pitch = xres; |
| 322 | save_lines = (icb->meram_size / 16 / MERAM_SEC_LINE); |
| 323 | save_lines *= MERAM_SEC_LINE; |
| 324 | } else { |
| 325 | xpitch = xres; |
| 326 | line_cnt = yres; |
| 327 | *out_pitch = lcdc_pitch; |
| 328 | save_lines = icb->meram_size / (lcdc_pitch >> 10) / 2; |
| 329 | save_lines &= 0xff; |
| 330 | } |
| 331 | bnm = (save_lines - 1) << 16; |
| 332 | |
| 333 | /* TODO: we better to check if we have enough MERAM buffer size */ |
| 334 | |
| 335 | /* set up ICB */ |
| 336 | meram_write_icb(priv->base, icb->cache_icb, MExxBSIZE, |
| 337 | MERAM_MExxBSIZE_VAL(0x0, line_cnt - 1, xpitch - 1)); |
| 338 | meram_write_icb(priv->base, icb->marker_icb, MExxBSIZE, |
| 339 | MERAM_MExxBSIZE_VAL(0xf, line_cnt - 1, xpitch - 1)); |
| 340 | |
| 341 | meram_write_icb(priv->base, icb->cache_icb, MExxMNCF, bnm); |
| 342 | meram_write_icb(priv->base, icb->marker_icb, MExxMNCF, bnm); |
| 343 | |
| 344 | meram_write_icb(priv->base, icb->cache_icb, MExxSBSIZE, xpitch); |
| 345 | meram_write_icb(priv->base, icb->marker_icb, MExxSBSIZE, xpitch); |
| 346 | |
| 347 | /* save a cache unit size */ |
Laurent Pinchart | 2a618e0 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 348 | priv->icbs[icb->cache_icb].cache_unit = xres * save_lines; |
| 349 | priv->icbs[icb->marker_icb].cache_unit = xres * save_lines; |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 350 | |
| 351 | /* |
| 352 | * Set MERAM for framebuffer |
| 353 | * |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 354 | * we also chain the cache_icb and the marker_icb. |
| 355 | * we also split the allocated MERAM buffer between two ICBs. |
| 356 | */ |
| 357 | meram_write_icb(priv->base, icb->cache_icb, MExxCTL, |
Laurent Pinchart | 974d250b | 2011-09-19 11:40:31 +0200 | [diff] [blame^] | 358 | MERAM_MExxCTL_VAL(icb->marker_icb, marker->offset) | |
Laurent Pinchart | f0a260f | 2011-07-13 12:13:47 +0200 | [diff] [blame] | 359 | MExxCTL_WD1 | MExxCTL_WD0 | MExxCTL_WS | MExxCTL_CM | |
| 360 | MExxCTL_MD_FB); |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 361 | meram_write_icb(priv->base, icb->marker_icb, MExxCTL, |
Laurent Pinchart | 974d250b | 2011-09-19 11:40:31 +0200 | [diff] [blame^] | 362 | MERAM_MExxCTL_VAL(icb->cache_icb, marker->offset + |
Laurent Pinchart | f0a260f | 2011-07-13 12:13:47 +0200 | [diff] [blame] | 363 | icb->meram_size / 2) | |
| 364 | MExxCTL_WD1 | MExxCTL_WD0 | MExxCTL_WS | MExxCTL_CM | |
| 365 | MExxCTL_MD_FB); |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 366 | |
| 367 | return 0; |
| 368 | } |
| 369 | |
| 370 | static void meram_deinit(struct sh_mobile_meram_priv *priv, |
Laurent Pinchart | 2a618e0 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 371 | const struct sh_mobile_meram_icb_cfg *icb) |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 372 | { |
| 373 | /* disable ICB */ |
Laurent Pinchart | da6cf51 | 2011-08-31 13:00:52 +0200 | [diff] [blame] | 374 | meram_write_icb(priv->base, icb->cache_icb, MExxCTL, |
| 375 | MExxCTL_WBF | MExxCTL_WF | MExxCTL_RF); |
| 376 | meram_write_icb(priv->base, icb->marker_icb, MExxCTL, |
| 377 | MExxCTL_WBF | MExxCTL_WF | MExxCTL_RF); |
Laurent Pinchart | 2a618e0 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 378 | |
| 379 | priv->icbs[icb->cache_icb].cache_unit = 0; |
| 380 | priv->icbs[icb->marker_icb].cache_unit = 0; |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 381 | } |
| 382 | |
Laurent Pinchart | 7554340 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 383 | /* ----------------------------------------------------------------------------- |
| 384 | * Registration/unregistration |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 385 | */ |
| 386 | |
| 387 | static int sh_mobile_meram_register(struct sh_mobile_meram_info *pdata, |
Laurent Pinchart | 2a618e0 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 388 | const struct sh_mobile_meram_cfg *cfg, |
Laurent Pinchart | 0543283 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 389 | unsigned int xres, unsigned int yres, |
| 390 | unsigned int pixelformat, |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 391 | unsigned long base_addr_y, |
| 392 | unsigned long base_addr_c, |
| 393 | unsigned long *icb_addr_y, |
| 394 | unsigned long *icb_addr_c, |
Laurent Pinchart | 0543283 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 395 | unsigned int *pitch) |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 396 | { |
| 397 | struct platform_device *pdev; |
| 398 | struct sh_mobile_meram_priv *priv; |
Laurent Pinchart | 0543283 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 399 | unsigned int out_pitch; |
| 400 | unsigned int n; |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 401 | int error = 0; |
| 402 | |
| 403 | if (!pdata || !pdata->priv || !pdata->pdev || !cfg) |
| 404 | return -EINVAL; |
| 405 | |
| 406 | if (pixelformat != SH_MOBILE_MERAM_PF_NV && |
Damian | 3fedd2a | 2011-05-18 11:10:08 +0000 | [diff] [blame] | 407 | pixelformat != SH_MOBILE_MERAM_PF_NV24 && |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 408 | pixelformat != SH_MOBILE_MERAM_PF_RGB) |
| 409 | return -EINVAL; |
| 410 | |
| 411 | priv = pdata->priv; |
| 412 | pdev = pdata->pdev; |
| 413 | |
| 414 | dev_dbg(&pdev->dev, "registering %dx%d (%s) (y=%08lx, c=%08lx)", |
| 415 | xres, yres, (!pixelformat) ? "yuv" : "rgb", |
| 416 | base_addr_y, base_addr_c); |
| 417 | |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 418 | /* we can't handle wider than 8192px */ |
| 419 | if (xres > 8192) { |
| 420 | dev_err(&pdev->dev, "width exceeding the limit (> 8192)."); |
Laurent Pinchart | 7963e21 | 2011-07-13 12:13:47 +0200 | [diff] [blame] | 421 | return -EINVAL; |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 422 | } |
| 423 | |
| 424 | /* do we have at least one ICB config? */ |
| 425 | if (cfg->icb[0].marker_icb < 0 || cfg->icb[0].cache_icb < 0) { |
| 426 | dev_err(&pdev->dev, "at least one ICB is required."); |
Laurent Pinchart | 7963e21 | 2011-07-13 12:13:47 +0200 | [diff] [blame] | 427 | return -EINVAL; |
| 428 | } |
| 429 | |
| 430 | mutex_lock(&priv->lock); |
| 431 | |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 432 | /* make sure that there's no overlaps */ |
| 433 | if (meram_check_overlap(priv, &cfg->icb[0])) { |
| 434 | dev_err(&pdev->dev, "conflicting config detected."); |
| 435 | error = -EINVAL; |
| 436 | goto err; |
| 437 | } |
| 438 | n = 1; |
| 439 | |
| 440 | /* do the same if we have the second ICB set */ |
| 441 | if (cfg->icb[1].marker_icb >= 0 && cfg->icb[1].cache_icb >= 0) { |
| 442 | if (meram_check_overlap(priv, &cfg->icb[1])) { |
| 443 | dev_err(&pdev->dev, "conflicting config detected."); |
| 444 | error = -EINVAL; |
| 445 | goto err; |
| 446 | } |
| 447 | n = 2; |
| 448 | } |
| 449 | |
Damian | 3fedd2a | 2011-05-18 11:10:08 +0000 | [diff] [blame] | 450 | if (is_nvcolor(pixelformat) && n != 2) { |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 451 | dev_err(&pdev->dev, "requires two ICB sets for planar Y/C."); |
| 452 | error = -EINVAL; |
| 453 | goto err; |
| 454 | } |
| 455 | |
Laurent Pinchart | 974d250b | 2011-09-19 11:40:31 +0200 | [diff] [blame^] | 456 | /* We now register the ICBs and allocate the MERAM regions. */ |
| 457 | error = meram_alloc(priv, &cfg->icb[0], pixelformat); |
| 458 | if (error < 0) |
| 459 | goto err; |
| 460 | |
| 461 | if (is_nvcolor(pixelformat)) { |
| 462 | error = meram_alloc(priv, &cfg->icb[1], pixelformat); |
| 463 | if (error < 0) { |
| 464 | meram_free(priv, &cfg->icb[0]); |
| 465 | goto err; |
| 466 | } |
| 467 | } |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 468 | |
| 469 | /* initialize MERAM */ |
| 470 | meram_init(priv, &cfg->icb[0], xres, yres, &out_pitch); |
| 471 | *pitch = out_pitch; |
| 472 | if (pixelformat == SH_MOBILE_MERAM_PF_NV) |
| 473 | meram_init(priv, &cfg->icb[1], xres, (yres + 1) / 2, |
| 474 | &out_pitch); |
Damian | 3fedd2a | 2011-05-18 11:10:08 +0000 | [diff] [blame] | 475 | else if (pixelformat == SH_MOBILE_MERAM_PF_NV24) |
| 476 | meram_init(priv, &cfg->icb[1], 2 * xres, (yres + 1) / 2, |
| 477 | &out_pitch); |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 478 | |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 479 | meram_set_next_addr(priv, cfg, base_addr_y, base_addr_c); |
| 480 | meram_get_next_icb_addr(pdata, cfg, icb_addr_y, icb_addr_c); |
| 481 | |
| 482 | dev_dbg(&pdev->dev, "registered - can access via y=%08lx, c=%08lx", |
| 483 | *icb_addr_y, *icb_addr_c); |
| 484 | |
| 485 | err: |
| 486 | mutex_unlock(&priv->lock); |
| 487 | return error; |
| 488 | } |
| 489 | |
| 490 | static int sh_mobile_meram_unregister(struct sh_mobile_meram_info *pdata, |
Laurent Pinchart | 2a618e0 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 491 | const struct sh_mobile_meram_cfg *cfg) |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 492 | { |
| 493 | struct sh_mobile_meram_priv *priv; |
Laurent Pinchart | 2a618e0 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 494 | struct sh_mobile_meram_icb *icb; |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 495 | |
| 496 | if (!pdata || !pdata->priv || !cfg) |
| 497 | return -EINVAL; |
| 498 | |
| 499 | priv = pdata->priv; |
Laurent Pinchart | 2a618e0 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 500 | icb = &priv->icbs[cfg->icb[0].marker_icb]; |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 501 | |
| 502 | mutex_lock(&priv->lock); |
| 503 | |
| 504 | /* deinit & unmark */ |
Laurent Pinchart | 2a618e0 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 505 | if (is_nvcolor(icb->pixelformat)) { |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 506 | meram_deinit(priv, &cfg->icb[1]); |
Laurent Pinchart | 974d250b | 2011-09-19 11:40:31 +0200 | [diff] [blame^] | 507 | meram_free(priv, &cfg->icb[1]); |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 508 | } |
| 509 | meram_deinit(priv, &cfg->icb[0]); |
Laurent Pinchart | 974d250b | 2011-09-19 11:40:31 +0200 | [diff] [blame^] | 510 | meram_free(priv, &cfg->icb[0]); |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 511 | |
| 512 | mutex_unlock(&priv->lock); |
| 513 | |
| 514 | return 0; |
| 515 | } |
| 516 | |
| 517 | static int sh_mobile_meram_update(struct sh_mobile_meram_info *pdata, |
Laurent Pinchart | 2a618e0 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 518 | const struct sh_mobile_meram_cfg *cfg, |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 519 | unsigned long base_addr_y, |
| 520 | unsigned long base_addr_c, |
| 521 | unsigned long *icb_addr_y, |
| 522 | unsigned long *icb_addr_c) |
| 523 | { |
| 524 | struct sh_mobile_meram_priv *priv; |
| 525 | |
| 526 | if (!pdata || !pdata->priv || !cfg) |
| 527 | return -EINVAL; |
| 528 | |
| 529 | priv = pdata->priv; |
| 530 | |
| 531 | mutex_lock(&priv->lock); |
| 532 | |
| 533 | meram_set_next_addr(priv, cfg, base_addr_y, base_addr_c); |
| 534 | meram_get_next_icb_addr(pdata, cfg, icb_addr_y, icb_addr_c); |
| 535 | |
| 536 | mutex_unlock(&priv->lock); |
| 537 | |
| 538 | return 0; |
| 539 | } |
| 540 | |
Laurent Pinchart | 7554340 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 541 | static struct sh_mobile_meram_ops sh_mobile_meram_ops = { |
| 542 | .module = THIS_MODULE, |
| 543 | .meram_register = sh_mobile_meram_register, |
| 544 | .meram_unregister = sh_mobile_meram_unregister, |
| 545 | .meram_update = sh_mobile_meram_update, |
| 546 | }; |
| 547 | |
| 548 | /* ----------------------------------------------------------------------------- |
| 549 | * Power management |
| 550 | */ |
| 551 | |
Damian Hobson-Garcia | 0b3bb77 | 2011-06-22 07:49:51 +0200 | [diff] [blame] | 552 | static int sh_mobile_meram_runtime_suspend(struct device *dev) |
| 553 | { |
| 554 | struct platform_device *pdev = to_platform_device(dev); |
| 555 | struct sh_mobile_meram_priv *priv = platform_get_drvdata(pdev); |
Laurent Pinchart | 0543283 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 556 | unsigned int i, j; |
Damian Hobson-Garcia | 0b3bb77 | 2011-06-22 07:49:51 +0200 | [diff] [blame] | 557 | |
Laurent Pinchart | 7554340 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 558 | for (i = 0; i < MERAM_REGS_SIZE; i++) |
Laurent Pinchart | 2a618e0 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 559 | priv->regs[i] = meram_read_reg(priv->base, common_regs[i]); |
Damian Hobson-Garcia | 0b3bb77 | 2011-06-22 07:49:51 +0200 | [diff] [blame] | 560 | |
Laurent Pinchart | 0543283 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 561 | for (i = 0; i < 32; i++) { |
| 562 | if (!test_bit(i, &priv->used_icb)) |
Damian Hobson-Garcia | 0b3bb77 | 2011-06-22 07:49:51 +0200 | [diff] [blame] | 563 | continue; |
Laurent Pinchart | 0543283 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 564 | for (j = 0; j < ICB_REGS_SIZE; j++) { |
Laurent Pinchart | 2a618e0 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 565 | priv->icbs[i].regs[j] = |
Laurent Pinchart | 0543283 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 566 | meram_read_icb(priv->base, i, icb_regs[j]); |
Damian Hobson-Garcia | 0b3bb77 | 2011-06-22 07:49:51 +0200 | [diff] [blame] | 567 | /* Reset ICB on resume */ |
Laurent Pinchart | 0543283 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 568 | if (icb_regs[j] == MExxCTL) |
Laurent Pinchart | 2a618e0 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 569 | priv->icbs[i].regs[j] |= |
Laurent Pinchart | f0a260f | 2011-07-13 12:13:47 +0200 | [diff] [blame] | 570 | MExxCTL_WBF | MExxCTL_WF | MExxCTL_RF; |
Damian Hobson-Garcia | 0b3bb77 | 2011-06-22 07:49:51 +0200 | [diff] [blame] | 571 | } |
| 572 | } |
| 573 | return 0; |
| 574 | } |
| 575 | |
| 576 | static int sh_mobile_meram_runtime_resume(struct device *dev) |
| 577 | { |
| 578 | struct platform_device *pdev = to_platform_device(dev); |
| 579 | struct sh_mobile_meram_priv *priv = platform_get_drvdata(pdev); |
Laurent Pinchart | 0543283 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 580 | unsigned int i, j; |
Damian Hobson-Garcia | 0b3bb77 | 2011-06-22 07:49:51 +0200 | [diff] [blame] | 581 | |
Laurent Pinchart | 0543283 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 582 | for (i = 0; i < 32; i++) { |
| 583 | if (!test_bit(i, &priv->used_icb)) |
Damian Hobson-Garcia | 0b3bb77 | 2011-06-22 07:49:51 +0200 | [diff] [blame] | 584 | continue; |
Laurent Pinchart | 2a618e0 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 585 | for (j = 0; j < ICB_REGS_SIZE; j++) |
Laurent Pinchart | 0543283 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 586 | meram_write_icb(priv->base, i, icb_regs[j], |
Laurent Pinchart | 2a618e0 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 587 | priv->icbs[i].regs[j]); |
Damian Hobson-Garcia | 0b3bb77 | 2011-06-22 07:49:51 +0200 | [diff] [blame] | 588 | } |
| 589 | |
Laurent Pinchart | 7554340 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 590 | for (i = 0; i < MERAM_REGS_SIZE; i++) |
Laurent Pinchart | 2a618e0 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 591 | meram_write_reg(priv->base, common_regs[i], priv->regs[i]); |
Damian Hobson-Garcia | 0b3bb77 | 2011-06-22 07:49:51 +0200 | [diff] [blame] | 592 | return 0; |
| 593 | } |
| 594 | |
| 595 | static const struct dev_pm_ops sh_mobile_meram_dev_pm_ops = { |
| 596 | .runtime_suspend = sh_mobile_meram_runtime_suspend, |
| 597 | .runtime_resume = sh_mobile_meram_runtime_resume, |
| 598 | }; |
| 599 | |
Laurent Pinchart | 7554340 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 600 | /* ----------------------------------------------------------------------------- |
| 601 | * Probe/remove and driver init/exit |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 602 | */ |
| 603 | |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 604 | static int __devinit sh_mobile_meram_probe(struct platform_device *pdev) |
| 605 | { |
| 606 | struct sh_mobile_meram_priv *priv; |
| 607 | struct sh_mobile_meram_info *pdata = pdev->dev.platform_data; |
Laurent Pinchart | e1d1144 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 608 | struct resource *regs; |
| 609 | struct resource *meram; |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 610 | int error; |
| 611 | |
| 612 | if (!pdata) { |
| 613 | dev_err(&pdev->dev, "no platform data defined\n"); |
| 614 | return -EINVAL; |
| 615 | } |
| 616 | |
Laurent Pinchart | e1d1144 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 617 | regs = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 618 | meram = platform_get_resource(pdev, IORESOURCE_MEM, 1); |
| 619 | if (regs == NULL || meram == NULL) { |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 620 | dev_err(&pdev->dev, "cannot get platform resources\n"); |
| 621 | return -ENOENT; |
| 622 | } |
| 623 | |
| 624 | priv = kzalloc(sizeof(*priv), GFP_KERNEL); |
| 625 | if (!priv) { |
| 626 | dev_err(&pdev->dev, "cannot allocate device data\n"); |
| 627 | return -ENOMEM; |
| 628 | } |
| 629 | |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 630 | /* initialize private data */ |
| 631 | mutex_init(&priv->lock); |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 632 | pdata->ops = &sh_mobile_meram_ops; |
| 633 | pdata->priv = priv; |
| 634 | pdata->pdev = pdev; |
| 635 | |
Laurent Pinchart | 974d250b | 2011-09-19 11:40:31 +0200 | [diff] [blame^] | 636 | /* Request memory regions and remap the registers. */ |
Laurent Pinchart | e1d1144 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 637 | if (!request_mem_region(regs->start, resource_size(regs), pdev->name)) { |
| 638 | dev_err(&pdev->dev, "MERAM registers region already claimed\n"); |
| 639 | error = -EBUSY; |
| 640 | goto err_req_regs; |
| 641 | } |
| 642 | |
| 643 | if (!request_mem_region(meram->start, resource_size(meram), |
| 644 | pdev->name)) { |
| 645 | dev_err(&pdev->dev, "MERAM memory region already claimed\n"); |
| 646 | error = -EBUSY; |
| 647 | goto err_req_meram; |
| 648 | } |
| 649 | |
| 650 | priv->base = ioremap_nocache(regs->start, resource_size(regs)); |
| 651 | if (!priv->base) { |
| 652 | dev_err(&pdev->dev, "ioremap failed\n"); |
| 653 | error = -EFAULT; |
| 654 | goto err_ioremap; |
| 655 | } |
| 656 | |
Laurent Pinchart | 974d250b | 2011-09-19 11:40:31 +0200 | [diff] [blame^] | 657 | priv->meram = meram->start; |
| 658 | |
| 659 | /* Create and initialize the MERAM memory pool. */ |
| 660 | priv->pool = gen_pool_create(ilog2(MERAM_GRANULARITY), -1); |
| 661 | if (priv->pool == NULL) { |
| 662 | error = -ENOMEM; |
| 663 | goto err_genpool; |
| 664 | } |
| 665 | |
| 666 | error = gen_pool_add(priv->pool, meram->start, resource_size(meram), |
| 667 | -1); |
| 668 | if (error < 0) |
| 669 | goto err_genpool; |
| 670 | |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 671 | /* initialize ICB addressing mode */ |
| 672 | if (pdata->addr_mode == SH_MOBILE_MERAM_MODE1) |
Laurent Pinchart | f0a260f | 2011-07-13 12:13:47 +0200 | [diff] [blame] | 673 | meram_write_reg(priv->base, MEVCR1, MEVCR1_AMD1); |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 674 | |
Laurent Pinchart | e1d1144 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 675 | platform_set_drvdata(pdev, priv); |
Damian Hobson-Garcia | 1767377 | 2011-07-04 08:06:11 +0200 | [diff] [blame] | 676 | pm_runtime_enable(&pdev->dev); |
| 677 | |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 678 | dev_info(&pdev->dev, "sh_mobile_meram initialized."); |
| 679 | |
| 680 | return 0; |
| 681 | |
Laurent Pinchart | 974d250b | 2011-09-19 11:40:31 +0200 | [diff] [blame^] | 682 | err_genpool: |
| 683 | if (priv->pool) |
| 684 | gen_pool_destroy(priv->pool); |
| 685 | iounmap(priv->base); |
Laurent Pinchart | e1d1144 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 686 | err_ioremap: |
| 687 | release_mem_region(meram->start, resource_size(meram)); |
| 688 | err_req_meram: |
| 689 | release_mem_region(regs->start, resource_size(regs)); |
| 690 | err_req_regs: |
| 691 | mutex_destroy(&priv->lock); |
| 692 | kfree(priv); |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 693 | |
| 694 | return error; |
| 695 | } |
| 696 | |
| 697 | |
| 698 | static int sh_mobile_meram_remove(struct platform_device *pdev) |
| 699 | { |
| 700 | struct sh_mobile_meram_priv *priv = platform_get_drvdata(pdev); |
Laurent Pinchart | e1d1144 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 701 | struct resource *regs = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 702 | struct resource *meram = platform_get_resource(pdev, IORESOURCE_MEM, 1); |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 703 | |
Damian Hobson-Garcia | 1767377 | 2011-07-04 08:06:11 +0200 | [diff] [blame] | 704 | pm_runtime_disable(&pdev->dev); |
| 705 | |
Laurent Pinchart | 974d250b | 2011-09-19 11:40:31 +0200 | [diff] [blame^] | 706 | gen_pool_destroy(priv->pool); |
| 707 | |
Laurent Pinchart | e1d1144 | 2011-09-19 11:40:31 +0200 | [diff] [blame] | 708 | iounmap(priv->base); |
| 709 | release_mem_region(meram->start, resource_size(meram)); |
| 710 | release_mem_region(regs->start, resource_size(regs)); |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 711 | |
| 712 | mutex_destroy(&priv->lock); |
| 713 | |
| 714 | kfree(priv); |
| 715 | |
| 716 | return 0; |
| 717 | } |
| 718 | |
| 719 | static struct platform_driver sh_mobile_meram_driver = { |
| 720 | .driver = { |
| 721 | .name = "sh_mobile_meram", |
| 722 | .owner = THIS_MODULE, |
Damian Hobson-Garcia | 0b3bb77 | 2011-06-22 07:49:51 +0200 | [diff] [blame] | 723 | .pm = &sh_mobile_meram_dev_pm_ops, |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 724 | }, |
| 725 | .probe = sh_mobile_meram_probe, |
| 726 | .remove = sh_mobile_meram_remove, |
| 727 | }; |
| 728 | |
Axel Lin | 4277f2c | 2011-11-26 10:25:54 +0800 | [diff] [blame] | 729 | module_platform_driver(sh_mobile_meram_driver); |
Damian | 7caa434 | 2011-05-18 11:10:07 +0000 | [diff] [blame] | 730 | |
| 731 | MODULE_DESCRIPTION("SuperH Mobile MERAM driver"); |
| 732 | MODULE_AUTHOR("Damian Hobson-Garcia / Takanari Hayama"); |
| 733 | MODULE_LICENSE("GPL v2"); |