Thomas Gleixner | d2912cb | 2019-06-04 10:11:33 +0200 | [diff] [blame^] | 1 | // SPDX-License-Identifier: GPL-2.0-only |
Grant Likely | ca632f5 | 2011-06-06 01:16:30 -0600 | [diff] [blame] | 2 | /* |
Wan ZongShun | 30eaed0 | 2009-12-01 14:29:20 +0000 | [diff] [blame] | 3 | * Copyright (c) 2009 Nuvoton technology. |
| 4 | * Wan ZongShun <mcuos.com@gmail.com> |
Grant Likely | ca632f5 | 2011-06-06 01:16:30 -0600 | [diff] [blame] | 5 | */ |
Wan ZongShun | 30eaed0 | 2009-12-01 14:29:20 +0000 | [diff] [blame] | 6 | |
Axel Lin | 00d2952 | 2011-11-24 11:10:51 +0800 | [diff] [blame] | 7 | #include <linux/module.h> |
Wan ZongShun | 30eaed0 | 2009-12-01 14:29:20 +0000 | [diff] [blame] | 8 | #include <linux/spinlock.h> |
Wan ZongShun | 30eaed0 | 2009-12-01 14:29:20 +0000 | [diff] [blame] | 9 | #include <linux/interrupt.h> |
| 10 | #include <linux/delay.h> |
| 11 | #include <linux/errno.h> |
| 12 | #include <linux/err.h> |
| 13 | #include <linux/clk.h> |
| 14 | #include <linux/device.h> |
| 15 | #include <linux/platform_device.h> |
| 16 | #include <linux/gpio.h> |
| 17 | #include <linux/io.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 18 | #include <linux/slab.h> |
Wan ZongShun | 30eaed0 | 2009-12-01 14:29:20 +0000 | [diff] [blame] | 19 | |
| 20 | #include <linux/spi/spi.h> |
| 21 | #include <linux/spi/spi_bitbang.h> |
| 22 | |
Arnd Bergmann | 54ecf4f | 2012-08-24 15:18:36 +0200 | [diff] [blame] | 23 | #include <linux/platform_data/spi-nuc900.h> |
Wan ZongShun | 30eaed0 | 2009-12-01 14:29:20 +0000 | [diff] [blame] | 24 | |
| 25 | /* usi registers offset */ |
| 26 | #define USI_CNT 0x00 |
| 27 | #define USI_DIV 0x04 |
| 28 | #define USI_SSR 0x08 |
| 29 | #define USI_RX0 0x10 |
| 30 | #define USI_TX0 0x10 |
| 31 | |
| 32 | /* usi register bit */ |
| 33 | #define ENINT (0x01 << 17) |
| 34 | #define ENFLG (0x01 << 16) |
Axel Lin | fb534f1 | 2014-03-21 13:24:14 +0800 | [diff] [blame] | 35 | #define SLEEP (0x0f << 12) |
Wan ZongShun | 30eaed0 | 2009-12-01 14:29:20 +0000 | [diff] [blame] | 36 | #define TXNUM (0x03 << 8) |
Axel Lin | fb534f1 | 2014-03-21 13:24:14 +0800 | [diff] [blame] | 37 | #define TXBITLEN (0x1f << 3) |
Wan ZongShun | 30eaed0 | 2009-12-01 14:29:20 +0000 | [diff] [blame] | 38 | #define TXNEG (0x01 << 2) |
| 39 | #define RXNEG (0x01 << 1) |
| 40 | #define LSB (0x01 << 10) |
| 41 | #define SELECTLEV (0x01 << 2) |
| 42 | #define SELECTPOL (0x01 << 31) |
| 43 | #define SELECTSLAVE 0x01 |
| 44 | #define GOBUSY 0x01 |
| 45 | |
| 46 | struct nuc900_spi { |
| 47 | struct spi_bitbang bitbang; |
| 48 | struct completion done; |
| 49 | void __iomem *regs; |
| 50 | int irq; |
| 51 | int len; |
| 52 | int count; |
| 53 | const unsigned char *tx; |
| 54 | unsigned char *rx; |
| 55 | struct clk *clk; |
Wan ZongShun | 30eaed0 | 2009-12-01 14:29:20 +0000 | [diff] [blame] | 56 | struct spi_master *master; |
Wan ZongShun | 30eaed0 | 2009-12-01 14:29:20 +0000 | [diff] [blame] | 57 | struct nuc900_spi_info *pdata; |
| 58 | spinlock_t lock; |
Wan ZongShun | 30eaed0 | 2009-12-01 14:29:20 +0000 | [diff] [blame] | 59 | }; |
| 60 | |
| 61 | static inline struct nuc900_spi *to_hw(struct spi_device *sdev) |
| 62 | { |
| 63 | return spi_master_get_devdata(sdev->master); |
| 64 | } |
| 65 | |
| 66 | static void nuc900_slave_select(struct spi_device *spi, unsigned int ssr) |
| 67 | { |
| 68 | struct nuc900_spi *hw = to_hw(spi); |
| 69 | unsigned int val; |
| 70 | unsigned int cs = spi->mode & SPI_CS_HIGH ? 1 : 0; |
| 71 | unsigned int cpol = spi->mode & SPI_CPOL ? 1 : 0; |
| 72 | unsigned long flags; |
| 73 | |
| 74 | spin_lock_irqsave(&hw->lock, flags); |
| 75 | |
| 76 | val = __raw_readl(hw->regs + USI_SSR); |
| 77 | |
| 78 | if (!cs) |
| 79 | val &= ~SELECTLEV; |
| 80 | else |
| 81 | val |= SELECTLEV; |
| 82 | |
| 83 | if (!ssr) |
| 84 | val &= ~SELECTSLAVE; |
| 85 | else |
| 86 | val |= SELECTSLAVE; |
| 87 | |
| 88 | __raw_writel(val, hw->regs + USI_SSR); |
| 89 | |
| 90 | val = __raw_readl(hw->regs + USI_CNT); |
| 91 | |
| 92 | if (!cpol) |
| 93 | val &= ~SELECTPOL; |
| 94 | else |
| 95 | val |= SELECTPOL; |
| 96 | |
| 97 | __raw_writel(val, hw->regs + USI_CNT); |
| 98 | |
| 99 | spin_unlock_irqrestore(&hw->lock, flags); |
| 100 | } |
| 101 | |
| 102 | static void nuc900_spi_chipsel(struct spi_device *spi, int value) |
| 103 | { |
| 104 | switch (value) { |
| 105 | case BITBANG_CS_INACTIVE: |
| 106 | nuc900_slave_select(spi, 0); |
| 107 | break; |
| 108 | |
| 109 | case BITBANG_CS_ACTIVE: |
| 110 | nuc900_slave_select(spi, 1); |
| 111 | break; |
| 112 | } |
| 113 | } |
| 114 | |
Axel Lin | fb534f1 | 2014-03-21 13:24:14 +0800 | [diff] [blame] | 115 | static void nuc900_spi_setup_txnum(struct nuc900_spi *hw, unsigned int txnum) |
Wan ZongShun | 30eaed0 | 2009-12-01 14:29:20 +0000 | [diff] [blame] | 116 | { |
| 117 | unsigned int val; |
| 118 | unsigned long flags; |
| 119 | |
| 120 | spin_lock_irqsave(&hw->lock, flags); |
| 121 | |
Axel Lin | fb534f1 | 2014-03-21 13:24:14 +0800 | [diff] [blame] | 122 | val = __raw_readl(hw->regs + USI_CNT) & ~TXNUM; |
Wan ZongShun | 30eaed0 | 2009-12-01 14:29:20 +0000 | [diff] [blame] | 123 | |
Axel Lin | fb534f1 | 2014-03-21 13:24:14 +0800 | [diff] [blame] | 124 | if (txnum) |
Wan ZongShun | 30eaed0 | 2009-12-01 14:29:20 +0000 | [diff] [blame] | 125 | val |= txnum << 0x08; |
| 126 | |
| 127 | __raw_writel(val, hw->regs + USI_CNT); |
| 128 | |
| 129 | spin_unlock_irqrestore(&hw->lock, flags); |
| 130 | |
| 131 | } |
| 132 | |
| 133 | static void nuc900_spi_setup_txbitlen(struct nuc900_spi *hw, |
| 134 | unsigned int txbitlen) |
| 135 | { |
| 136 | unsigned int val; |
| 137 | unsigned long flags; |
| 138 | |
| 139 | spin_lock_irqsave(&hw->lock, flags); |
| 140 | |
Axel Lin | fb534f1 | 2014-03-21 13:24:14 +0800 | [diff] [blame] | 141 | val = __raw_readl(hw->regs + USI_CNT) & ~TXBITLEN; |
Wan ZongShun | 30eaed0 | 2009-12-01 14:29:20 +0000 | [diff] [blame] | 142 | |
| 143 | val |= (txbitlen << 0x03); |
| 144 | |
| 145 | __raw_writel(val, hw->regs + USI_CNT); |
| 146 | |
| 147 | spin_unlock_irqrestore(&hw->lock, flags); |
| 148 | } |
| 149 | |
| 150 | static void nuc900_spi_gobusy(struct nuc900_spi *hw) |
| 151 | { |
| 152 | unsigned int val; |
| 153 | unsigned long flags; |
| 154 | |
| 155 | spin_lock_irqsave(&hw->lock, flags); |
| 156 | |
| 157 | val = __raw_readl(hw->regs + USI_CNT); |
| 158 | |
| 159 | val |= GOBUSY; |
| 160 | |
| 161 | __raw_writel(val, hw->regs + USI_CNT); |
| 162 | |
| 163 | spin_unlock_irqrestore(&hw->lock, flags); |
| 164 | } |
| 165 | |
Wan ZongShun | 30eaed0 | 2009-12-01 14:29:20 +0000 | [diff] [blame] | 166 | static inline unsigned int hw_txbyte(struct nuc900_spi *hw, int count) |
| 167 | { |
| 168 | return hw->tx ? hw->tx[count] : 0; |
| 169 | } |
| 170 | |
| 171 | static int nuc900_spi_txrx(struct spi_device *spi, struct spi_transfer *t) |
| 172 | { |
| 173 | struct nuc900_spi *hw = to_hw(spi); |
| 174 | |
| 175 | hw->tx = t->tx_buf; |
| 176 | hw->rx = t->rx_buf; |
| 177 | hw->len = t->len; |
| 178 | hw->count = 0; |
| 179 | |
| 180 | __raw_writel(hw_txbyte(hw, 0x0), hw->regs + USI_TX0); |
| 181 | |
| 182 | nuc900_spi_gobusy(hw); |
| 183 | |
| 184 | wait_for_completion(&hw->done); |
| 185 | |
| 186 | return hw->count; |
| 187 | } |
| 188 | |
| 189 | static irqreturn_t nuc900_spi_irq(int irq, void *dev) |
| 190 | { |
| 191 | struct nuc900_spi *hw = dev; |
| 192 | unsigned int status; |
| 193 | unsigned int count = hw->count; |
| 194 | |
| 195 | status = __raw_readl(hw->regs + USI_CNT); |
| 196 | __raw_writel(status, hw->regs + USI_CNT); |
| 197 | |
| 198 | if (status & ENFLG) { |
| 199 | hw->count++; |
| 200 | |
| 201 | if (hw->rx) |
| 202 | hw->rx[count] = __raw_readl(hw->regs + USI_RX0); |
| 203 | count++; |
| 204 | |
| 205 | if (count < hw->len) { |
| 206 | __raw_writel(hw_txbyte(hw, count), hw->regs + USI_TX0); |
| 207 | nuc900_spi_gobusy(hw); |
| 208 | } else { |
| 209 | complete(&hw->done); |
| 210 | } |
| 211 | |
| 212 | return IRQ_HANDLED; |
| 213 | } |
| 214 | |
| 215 | complete(&hw->done); |
| 216 | return IRQ_HANDLED; |
| 217 | } |
| 218 | |
| 219 | static void nuc900_tx_edge(struct nuc900_spi *hw, unsigned int edge) |
| 220 | { |
| 221 | unsigned int val; |
| 222 | unsigned long flags; |
| 223 | |
| 224 | spin_lock_irqsave(&hw->lock, flags); |
| 225 | |
| 226 | val = __raw_readl(hw->regs + USI_CNT); |
| 227 | |
| 228 | if (edge) |
| 229 | val |= TXNEG; |
| 230 | else |
| 231 | val &= ~TXNEG; |
| 232 | __raw_writel(val, hw->regs + USI_CNT); |
| 233 | |
| 234 | spin_unlock_irqrestore(&hw->lock, flags); |
| 235 | } |
| 236 | |
| 237 | static void nuc900_rx_edge(struct nuc900_spi *hw, unsigned int edge) |
| 238 | { |
| 239 | unsigned int val; |
| 240 | unsigned long flags; |
| 241 | |
| 242 | spin_lock_irqsave(&hw->lock, flags); |
| 243 | |
| 244 | val = __raw_readl(hw->regs + USI_CNT); |
| 245 | |
| 246 | if (edge) |
| 247 | val |= RXNEG; |
| 248 | else |
| 249 | val &= ~RXNEG; |
| 250 | __raw_writel(val, hw->regs + USI_CNT); |
| 251 | |
| 252 | spin_unlock_irqrestore(&hw->lock, flags); |
| 253 | } |
| 254 | |
| 255 | static void nuc900_send_first(struct nuc900_spi *hw, unsigned int lsb) |
| 256 | { |
| 257 | unsigned int val; |
| 258 | unsigned long flags; |
| 259 | |
| 260 | spin_lock_irqsave(&hw->lock, flags); |
| 261 | |
| 262 | val = __raw_readl(hw->regs + USI_CNT); |
| 263 | |
| 264 | if (lsb) |
| 265 | val |= LSB; |
| 266 | else |
| 267 | val &= ~LSB; |
| 268 | __raw_writel(val, hw->regs + USI_CNT); |
| 269 | |
| 270 | spin_unlock_irqrestore(&hw->lock, flags); |
| 271 | } |
| 272 | |
| 273 | static void nuc900_set_sleep(struct nuc900_spi *hw, unsigned int sleep) |
| 274 | { |
| 275 | unsigned int val; |
| 276 | unsigned long flags; |
| 277 | |
| 278 | spin_lock_irqsave(&hw->lock, flags); |
| 279 | |
Axel Lin | fb534f1 | 2014-03-21 13:24:14 +0800 | [diff] [blame] | 280 | val = __raw_readl(hw->regs + USI_CNT) & ~SLEEP; |
Wan ZongShun | 30eaed0 | 2009-12-01 14:29:20 +0000 | [diff] [blame] | 281 | |
| 282 | if (sleep) |
| 283 | val |= (sleep << 12); |
Axel Lin | fb534f1 | 2014-03-21 13:24:14 +0800 | [diff] [blame] | 284 | |
Wan ZongShun | 30eaed0 | 2009-12-01 14:29:20 +0000 | [diff] [blame] | 285 | __raw_writel(val, hw->regs + USI_CNT); |
| 286 | |
| 287 | spin_unlock_irqrestore(&hw->lock, flags); |
| 288 | } |
| 289 | |
| 290 | static void nuc900_enable_int(struct nuc900_spi *hw) |
| 291 | { |
| 292 | unsigned int val; |
| 293 | unsigned long flags; |
| 294 | |
| 295 | spin_lock_irqsave(&hw->lock, flags); |
| 296 | |
| 297 | val = __raw_readl(hw->regs + USI_CNT); |
| 298 | |
| 299 | val |= ENINT; |
| 300 | |
| 301 | __raw_writel(val, hw->regs + USI_CNT); |
| 302 | |
| 303 | spin_unlock_irqrestore(&hw->lock, flags); |
| 304 | } |
| 305 | |
| 306 | static void nuc900_set_divider(struct nuc900_spi *hw) |
| 307 | { |
| 308 | __raw_writel(hw->pdata->divider, hw->regs + USI_DIV); |
| 309 | } |
| 310 | |
| 311 | static void nuc900_init_spi(struct nuc900_spi *hw) |
| 312 | { |
| 313 | clk_enable(hw->clk); |
| 314 | spin_lock_init(&hw->lock); |
| 315 | |
| 316 | nuc900_tx_edge(hw, hw->pdata->txneg); |
| 317 | nuc900_rx_edge(hw, hw->pdata->rxneg); |
| 318 | nuc900_send_first(hw, hw->pdata->lsb); |
| 319 | nuc900_set_sleep(hw, hw->pdata->sleep); |
| 320 | nuc900_spi_setup_txbitlen(hw, hw->pdata->txbitlen); |
| 321 | nuc900_spi_setup_txnum(hw, hw->pdata->txnum); |
| 322 | nuc900_set_divider(hw); |
| 323 | nuc900_enable_int(hw); |
| 324 | } |
| 325 | |
Grant Likely | fd4a319 | 2012-12-07 16:57:14 +0000 | [diff] [blame] | 326 | static int nuc900_spi_probe(struct platform_device *pdev) |
Wan ZongShun | 30eaed0 | 2009-12-01 14:29:20 +0000 | [diff] [blame] | 327 | { |
| 328 | struct nuc900_spi *hw; |
| 329 | struct spi_master *master; |
Axel Lin | 8120ff8 | 2014-02-08 11:15:57 +0800 | [diff] [blame] | 330 | struct resource *res; |
Wan ZongShun | 30eaed0 | 2009-12-01 14:29:20 +0000 | [diff] [blame] | 331 | int err = 0; |
| 332 | |
| 333 | master = spi_alloc_master(&pdev->dev, sizeof(struct nuc900_spi)); |
| 334 | if (master == NULL) { |
| 335 | dev_err(&pdev->dev, "No memory for spi_master\n"); |
Jingoo Han | 7519459 | 2013-12-09 19:18:18 +0900 | [diff] [blame] | 336 | return -ENOMEM; |
Wan ZongShun | 30eaed0 | 2009-12-01 14:29:20 +0000 | [diff] [blame] | 337 | } |
| 338 | |
| 339 | hw = spi_master_get_devdata(master); |
Axel Lin | 94c69f7 | 2013-09-10 15:43:41 +0800 | [diff] [blame] | 340 | hw->master = master; |
Jingoo Han | 8074cf0 | 2013-07-30 16:58:59 +0900 | [diff] [blame] | 341 | hw->pdata = dev_get_platdata(&pdev->dev); |
Wan ZongShun | 30eaed0 | 2009-12-01 14:29:20 +0000 | [diff] [blame] | 342 | |
| 343 | if (hw->pdata == NULL) { |
| 344 | dev_err(&pdev->dev, "No platform data supplied\n"); |
| 345 | err = -ENOENT; |
| 346 | goto err_pdata; |
| 347 | } |
| 348 | |
| 349 | platform_set_drvdata(pdev, hw); |
| 350 | init_completion(&hw->done); |
| 351 | |
Axel Lin | 044d0bb | 2013-08-15 14:11:21 +0800 | [diff] [blame] | 352 | master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH; |
Axel Lin | f7db158 | 2014-01-20 23:22:07 +0800 | [diff] [blame] | 353 | if (hw->pdata->lsb) |
| 354 | master->mode_bits |= SPI_LSB_FIRST; |
Wan ZongShun | 30eaed0 | 2009-12-01 14:29:20 +0000 | [diff] [blame] | 355 | master->num_chipselect = hw->pdata->num_cs; |
| 356 | master->bus_num = hw->pdata->bus_num; |
| 357 | hw->bitbang.master = hw->master; |
Wan ZongShun | 30eaed0 | 2009-12-01 14:29:20 +0000 | [diff] [blame] | 358 | hw->bitbang.chipselect = nuc900_spi_chipsel; |
| 359 | hw->bitbang.txrx_bufs = nuc900_spi_txrx; |
Wan ZongShun | 30eaed0 | 2009-12-01 14:29:20 +0000 | [diff] [blame] | 360 | |
Axel Lin | 8120ff8 | 2014-02-08 11:15:57 +0800 | [diff] [blame] | 361 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 362 | hw->regs = devm_ioremap_resource(&pdev->dev, res); |
Jingoo Han | 7519459 | 2013-12-09 19:18:18 +0900 | [diff] [blame] | 363 | if (IS_ERR(hw->regs)) { |
| 364 | err = PTR_ERR(hw->regs); |
Wan ZongShun | 30eaed0 | 2009-12-01 14:29:20 +0000 | [diff] [blame] | 365 | goto err_pdata; |
| 366 | } |
| 367 | |
Wan ZongShun | 30eaed0 | 2009-12-01 14:29:20 +0000 | [diff] [blame] | 368 | hw->irq = platform_get_irq(pdev, 0); |
| 369 | if (hw->irq < 0) { |
| 370 | dev_err(&pdev->dev, "No IRQ specified\n"); |
| 371 | err = -ENOENT; |
Jingoo Han | 7519459 | 2013-12-09 19:18:18 +0900 | [diff] [blame] | 372 | goto err_pdata; |
Wan ZongShun | 30eaed0 | 2009-12-01 14:29:20 +0000 | [diff] [blame] | 373 | } |
| 374 | |
Jingoo Han | 7519459 | 2013-12-09 19:18:18 +0900 | [diff] [blame] | 375 | err = devm_request_irq(&pdev->dev, hw->irq, nuc900_spi_irq, 0, |
| 376 | pdev->name, hw); |
Wan ZongShun | 30eaed0 | 2009-12-01 14:29:20 +0000 | [diff] [blame] | 377 | if (err) { |
| 378 | dev_err(&pdev->dev, "Cannot claim IRQ\n"); |
Jingoo Han | 7519459 | 2013-12-09 19:18:18 +0900 | [diff] [blame] | 379 | goto err_pdata; |
Wan ZongShun | 30eaed0 | 2009-12-01 14:29:20 +0000 | [diff] [blame] | 380 | } |
| 381 | |
Jingoo Han | 7519459 | 2013-12-09 19:18:18 +0900 | [diff] [blame] | 382 | hw->clk = devm_clk_get(&pdev->dev, "spi"); |
Wan ZongShun | 30eaed0 | 2009-12-01 14:29:20 +0000 | [diff] [blame] | 383 | if (IS_ERR(hw->clk)) { |
| 384 | dev_err(&pdev->dev, "No clock for device\n"); |
| 385 | err = PTR_ERR(hw->clk); |
Jingoo Han | 7519459 | 2013-12-09 19:18:18 +0900 | [diff] [blame] | 386 | goto err_pdata; |
Wan ZongShun | 30eaed0 | 2009-12-01 14:29:20 +0000 | [diff] [blame] | 387 | } |
| 388 | |
Axel Lin | 97371fa | 2011-11-25 00:23:28 +0100 | [diff] [blame] | 389 | mfp_set_groupg(&pdev->dev, NULL); |
Wan ZongShun | 30eaed0 | 2009-12-01 14:29:20 +0000 | [diff] [blame] | 390 | nuc900_init_spi(hw); |
| 391 | |
| 392 | err = spi_bitbang_start(&hw->bitbang); |
| 393 | if (err) { |
| 394 | dev_err(&pdev->dev, "Failed to register SPI master\n"); |
| 395 | goto err_register; |
| 396 | } |
| 397 | |
| 398 | return 0; |
| 399 | |
| 400 | err_register: |
| 401 | clk_disable(hw->clk); |
Wan ZongShun | 30eaed0 | 2009-12-01 14:29:20 +0000 | [diff] [blame] | 402 | err_pdata: |
Joe Perches | bc3f67a | 2010-11-14 19:04:47 -0800 | [diff] [blame] | 403 | spi_master_put(hw->master); |
Wan ZongShun | 30eaed0 | 2009-12-01 14:29:20 +0000 | [diff] [blame] | 404 | return err; |
| 405 | } |
| 406 | |
Grant Likely | fd4a319 | 2012-12-07 16:57:14 +0000 | [diff] [blame] | 407 | static int nuc900_spi_remove(struct platform_device *dev) |
Wan ZongShun | 30eaed0 | 2009-12-01 14:29:20 +0000 | [diff] [blame] | 408 | { |
| 409 | struct nuc900_spi *hw = platform_get_drvdata(dev); |
| 410 | |
Axel Lin | 708a7e4 | 2011-05-15 07:33:28 +0800 | [diff] [blame] | 411 | spi_bitbang_stop(&hw->bitbang); |
Wan ZongShun | 30eaed0 | 2009-12-01 14:29:20 +0000 | [diff] [blame] | 412 | clk_disable(hw->clk); |
Wan ZongShun | 30eaed0 | 2009-12-01 14:29:20 +0000 | [diff] [blame] | 413 | spi_master_put(hw->master); |
| 414 | return 0; |
| 415 | } |
| 416 | |
| 417 | static struct platform_driver nuc900_spi_driver = { |
| 418 | .probe = nuc900_spi_probe, |
Grant Likely | fd4a319 | 2012-12-07 16:57:14 +0000 | [diff] [blame] | 419 | .remove = nuc900_spi_remove, |
Wan ZongShun | 30eaed0 | 2009-12-01 14:29:20 +0000 | [diff] [blame] | 420 | .driver = { |
| 421 | .name = "nuc900-spi", |
Wan ZongShun | 30eaed0 | 2009-12-01 14:29:20 +0000 | [diff] [blame] | 422 | }, |
| 423 | }; |
Grant Likely | 940ab88 | 2011-10-05 11:29:49 -0600 | [diff] [blame] | 424 | module_platform_driver(nuc900_spi_driver); |
Wan ZongShun | 30eaed0 | 2009-12-01 14:29:20 +0000 | [diff] [blame] | 425 | |
| 426 | MODULE_AUTHOR("Wan ZongShun <mcuos.com@gmail.com>"); |
| 427 | MODULE_DESCRIPTION("nuc900 spi driver!"); |
| 428 | MODULE_LICENSE("GPL"); |
| 429 | MODULE_ALIAS("platform:nuc900-spi"); |