Lines Matching defs:spi
14 #include <linux/spi/spi.h>
15 #include <linux/spi/spi_bitbang.h>
16 #include <linux/spi/spi_gpio.h>
27 * spi->controller_state ... reserved for bitbang framework code
29 * spi->controller->dev.driver_data ... points to spi_gpio->bitbang
62 * #include "spi-gpio.c"
75 spi_to_spi_gpio(const struct spi_device *spi)
80 bang = spi_controller_get_devdata(spi->controller);
86 static inline void setsck(const struct spi_device *spi, int is_on)
88 struct spi_gpio *spi_gpio = spi_to_spi_gpio(spi);
93 static inline void setmosi(const struct spi_device *spi, int is_on)
95 struct spi_gpio *spi_gpio = spi_to_spi_gpio(spi);
100 static inline int getmiso(const struct spi_device *spi)
102 struct spi_gpio *spi_gpio = spi_to_spi_gpio(spi);
104 if (spi->mode & SPI_3WIRE)
118 #include "spi-bitbang-txrx.h"
134 static u32 spi_gpio_txrx_word_mode0(struct spi_device *spi,
137 if (unlikely(spi->mode & SPI_LSB_FIRST))
138 return bitbang_txrx_le_cpha0(spi, nsecs, 0, flags, word, bits);
140 return bitbang_txrx_be_cpha0(spi, nsecs, 0, flags, word, bits);
143 static u32 spi_gpio_txrx_word_mode1(struct spi_device *spi,
146 if (unlikely(spi->mode & SPI_LSB_FIRST))
147 return bitbang_txrx_le_cpha1(spi, nsecs, 0, flags, word, bits);
149 return bitbang_txrx_be_cpha1(spi, nsecs, 0, flags, word, bits);
152 static u32 spi_gpio_txrx_word_mode2(struct spi_device *spi,
155 if (unlikely(spi->mode & SPI_LSB_FIRST))
156 return bitbang_txrx_le_cpha0(spi, nsecs, 1, flags, word, bits);
158 return bitbang_txrx_be_cpha0(spi, nsecs, 1, flags, word, bits);
161 static u32 spi_gpio_txrx_word_mode3(struct spi_device *spi,
164 if (unlikely(spi->mode & SPI_LSB_FIRST))
165 return bitbang_txrx_le_cpha1(spi, nsecs, 1, flags, word, bits);
167 return bitbang_txrx_be_cpha1(spi, nsecs, 1, flags, word, bits);
180 static u32 spi_gpio_spec_txrx_word_mode0(struct spi_device *spi,
183 flags = spi->controller->flags;
184 if (unlikely(spi->mode & SPI_LSB_FIRST))
185 return bitbang_txrx_le_cpha0(spi, nsecs, 0, flags, word, bits);
187 return bitbang_txrx_be_cpha0(spi, nsecs, 0, flags, word, bits);
190 static u32 spi_gpio_spec_txrx_word_mode1(struct spi_device *spi,
193 flags = spi->controller->flags;
194 if (unlikely(spi->mode & SPI_LSB_FIRST))
195 return bitbang_txrx_le_cpha1(spi, nsecs, 0, flags, word, bits);
197 return bitbang_txrx_be_cpha1(spi, nsecs, 0, flags, word, bits);
200 static u32 spi_gpio_spec_txrx_word_mode2(struct spi_device *spi,
203 flags = spi->controller->flags;
204 if (unlikely(spi->mode & SPI_LSB_FIRST))
205 return bitbang_txrx_le_cpha0(spi, nsecs, 1, flags, word, bits);
207 return bitbang_txrx_be_cpha0(spi, nsecs, 1, flags, word, bits);
210 static u32 spi_gpio_spec_txrx_word_mode3(struct spi_device *spi,
213 flags = spi->controller->flags;
214 if (unlikely(spi->mode & SPI_LSB_FIRST))
215 return bitbang_txrx_le_cpha1(spi, nsecs, 1, flags, word, bits);
217 return bitbang_txrx_be_cpha1(spi, nsecs, 1, flags, word, bits);
222 static void spi_gpio_chipselect(struct spi_device *spi, int is_active)
224 struct spi_gpio *spi_gpio = spi_to_spi_gpio(spi);
228 gpiod_set_value_cansleep(spi_gpio->sck, spi->mode & SPI_CPOL);
232 struct gpio_desc *cs = spi_gpio->cs_gpios[spi_get_chipselect(spi, 0)];
235 gpiod_set_value_cansleep(cs, (spi->mode & SPI_CS_HIGH) ? is_active : !is_active);
239 static int spi_gpio_setup(struct spi_device *spi)
243 struct spi_gpio *spi_gpio = spi_to_spi_gpio(spi);
250 cs = spi_gpio->cs_gpios[spi_get_chipselect(spi, 0)];
251 if (!spi->controller_state && cs)
253 !(spi->mode & SPI_CS_HIGH));
257 status = spi_bitbang_setup(spi);
262 static int spi_gpio_set_direction(struct spi_device *spi, bool output)
264 struct spi_gpio *spi_gpio = spi_to_spi_gpio(spi);
278 if (spi->mode & SPI_3WIRE) {
291 if (spi->mode & SPI_3WIRE_HIZ) {
293 !(spi->mode & SPI_CPOL));
295 !!(spi->mode & SPI_CPOL));
300 static void spi_gpio_cleanup(struct spi_device *spi)
302 spi_bitbang_cleanup(spi);
331 { .compatible = "spi-gpio" },