| /Linux-v5.4/drivers/spi/ |
| D | spi-stm32.c | 244 int (*get_fifo_size)(struct stm32_spi *spi);
245 int (*get_bpw_mask)(struct stm32_spi *spi);
246 void (*disable)(struct stm32_spi *spi);
247 int (*config)(struct stm32_spi *spi);
248 void (*set_bpw)(struct stm32_spi *spi);
249 int (*set_mode)(struct stm32_spi *spi, unsigned int comm_type);
250 void (*set_data_idleness)(struct stm32_spi *spi, u32 length);
251 int (*set_number_of_data)(struct stm32_spi *spi, u32 length);
252 void (*transfer_one_dma_start)(struct stm32_spi *spi);
255 int (*transfer_one_irq)(struct stm32_spi *spi);
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| D | Makefile | 10 obj-$(CONFIG_SPI_MASTER) += spi.o
11 obj-$(CONFIG_SPI_MEM) += spi-mem.o
13 obj-$(CONFIG_SPI_LOOPBACK_TEST) += spi-loopback-test.o
16 obj-$(CONFIG_SPI_ALTERA) += spi-altera.o
17 obj-$(CONFIG_SPI_ARMADA_3700) += spi-armada-3700.o
18 obj-$(CONFIG_SPI_ATMEL) += spi-atmel.o
20 obj-$(CONFIG_SPI_AT91_USART) += spi-at91-usart.o
21 obj-$(CONFIG_SPI_ATH79) += spi-ath79.o
22 obj-$(CONFIG_SPI_AU1550) += spi-au1550.o
23 obj-$(CONFIG_SPI_AXI_SPI_ENGINE) += spi-axi-spi-engine.o
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| D | spi-lantiq-ssc.c | 189 static u32 lantiq_ssc_readl(const struct lantiq_ssc_spi *spi, u32 reg) in lantiq_ssc_readl() argument
191 return __raw_readl(spi->regbase + reg); in lantiq_ssc_readl()
194 static void lantiq_ssc_writel(const struct lantiq_ssc_spi *spi, u32 val, in lantiq_ssc_writel() argument
197 __raw_writel(val, spi->regbase + reg); in lantiq_ssc_writel()
200 static void lantiq_ssc_maskl(const struct lantiq_ssc_spi *spi, u32 clr, in lantiq_ssc_maskl() argument
203 u32 val = __raw_readl(spi->regbase + reg); in lantiq_ssc_maskl()
207 __raw_writel(val, spi->regbase + reg); in lantiq_ssc_maskl()
210 static unsigned int tx_fifo_level(const struct lantiq_ssc_spi *spi) in tx_fifo_level() argument
212 u32 fstat = lantiq_ssc_readl(spi, LTQ_SPI_FSTAT); in tx_fifo_level()
217 static unsigned int rx_fifo_level(const struct lantiq_ssc_spi *spi) in rx_fifo_level() argument
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| D | spi-sifive.c | 99 static void sifive_spi_write(struct sifive_spi *spi, int offset, u32 value) in sifive_spi_write() argument
101 iowrite32(value, spi->regs + offset); in sifive_spi_write()
104 static u32 sifive_spi_read(struct sifive_spi *spi, int offset) in sifive_spi_read() argument
106 return ioread32(spi->regs + offset); in sifive_spi_read()
109 static void sifive_spi_init(struct sifive_spi *spi) in sifive_spi_init() argument
112 sifive_spi_write(spi, SIFIVE_SPI_REG_IE, 0); in sifive_spi_init()
115 sifive_spi_write(spi, SIFIVE_SPI_REG_TXMARK, 1); in sifive_spi_init()
116 sifive_spi_write(spi, SIFIVE_SPI_REG_RXMARK, 0); in sifive_spi_init()
119 sifive_spi_write(spi, SIFIVE_SPI_REG_DELAY0, in sifive_spi_init()
122 sifive_spi_write(spi, SIFIVE_SPI_REG_DELAY1, in sifive_spi_init()
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| D | spi-omap2-mcspi.c | 160 static inline void mcspi_write_cs_reg(const struct spi_device *spi, in mcspi_write_cs_reg() argument
163 struct omap2_mcspi_cs *cs = spi->controller_state; in mcspi_write_cs_reg()
168 static inline u32 mcspi_read_cs_reg(const struct spi_device *spi, int idx) in mcspi_read_cs_reg() argument
170 struct omap2_mcspi_cs *cs = spi->controller_state; in mcspi_read_cs_reg()
175 static inline u32 mcspi_cached_chconf0(const struct spi_device *spi) in mcspi_cached_chconf0() argument
177 struct omap2_mcspi_cs *cs = spi->controller_state; in mcspi_cached_chconf0()
182 static inline void mcspi_write_chconf0(const struct spi_device *spi, u32 val) in mcspi_write_chconf0() argument
184 struct omap2_mcspi_cs *cs = spi->controller_state; in mcspi_write_chconf0()
187 mcspi_write_cs_reg(spi, OMAP2_MCSPI_CHCONF0, val); in mcspi_write_chconf0()
188 mcspi_read_cs_reg(spi, OMAP2_MCSPI_CHCONF0); in mcspi_write_chconf0()
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| D | spi-orion.c | 133 static int orion_spi_baudrate_set(struct spi_device *spi, unsigned int speed) in orion_spi_baudrate_set() argument
142 orion_spi = spi_master_get_devdata(spi->master); in orion_spi_baudrate_set()
231 orion_spi_mode_set(struct spi_device *spi) in orion_spi_mode_set() argument
236 orion_spi = spi_master_get_devdata(spi->master); in orion_spi_mode_set()
240 if (spi->mode & SPI_CPOL) in orion_spi_mode_set()
242 if (spi->mode & SPI_CPHA) in orion_spi_mode_set()
244 if (spi->mode & SPI_LSB_FIRST) in orion_spi_mode_set()
253 orion_spi_50mhz_ac_timing_erratum(struct spi_device *spi, unsigned int speed) in orion_spi_50mhz_ac_timing_erratum() argument
258 orion_spi = spi_master_get_devdata(spi->master); in orion_spi_50mhz_ac_timing_erratum()
278 speed == 50000000 && spi->mode & SPI_CPOL && in orion_spi_50mhz_ac_timing_erratum()
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| D | spi-bitbang.c | 42 u32 (*txrx_word)(struct spi_device *spi, unsigned nsecs,
46 struct spi_device *spi,
55 struct spi_device *spi, in bitbang_txrx_8() argument
56 u32 (*txrx_word)(struct spi_device *spi, in bitbang_txrx_8() argument
74 word = txrx_word(spi, ns, word, bits, flags); in bitbang_txrx_8()
83 struct spi_device *spi, in bitbang_txrx_16() argument
84 u32 (*txrx_word)(struct spi_device *spi, in bitbang_txrx_16() argument
102 word = txrx_word(spi, ns, word, bits, flags); in bitbang_txrx_16()
111 struct spi_device *spi, in bitbang_txrx_32() argument
112 u32 (*txrx_word)(struct spi_device *spi, in bitbang_txrx_32() argument
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| D | spi-gpio.c | 76 spi_to_spi_gpio(const struct spi_device *spi) in spi_to_spi_gpio() argument
81 bang = spi_master_get_devdata(spi->master); in spi_to_spi_gpio()
87 static inline void setsck(const struct spi_device *spi, int is_on) in setsck() argument
89 struct spi_gpio *spi_gpio = spi_to_spi_gpio(spi); in setsck()
94 static inline void setmosi(const struct spi_device *spi, int is_on) in setmosi() argument
96 struct spi_gpio *spi_gpio = spi_to_spi_gpio(spi); in setmosi()
101 static inline int getmiso(const struct spi_device *spi) in getmiso() argument
103 struct spi_gpio *spi_gpio = spi_to_spi_gpio(spi); in getmiso()
105 if (spi->mode & SPI_3WIRE) in getmiso()
135 static u32 spi_gpio_txrx_word_mode0(struct spi_device *spi, in spi_gpio_txrx_word_mode0() argument
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| /Linux-v5.4/drivers/staging/pi433/ |
| D | rf69.c | 27 static u8 rf69_read_reg(struct spi_device *spi, u8 addr) in rf69_read_reg() argument
31 retval = spi_w8r8(spi, addr); in rf69_read_reg()
40 dev_dbg(&spi->dev, "read 0x%x FAILED\n", addr); in rf69_read_reg()
42 dev_dbg(&spi->dev, "read 0x%x from reg 0x%x\n", retval, addr); in rf69_read_reg()
48 static int rf69_write_reg(struct spi_device *spi, u8 addr, u8 value) in rf69_write_reg() argument
56 retval = spi_write(spi, &buffer, 2); in rf69_write_reg()
65 dev_dbg(&spi->dev, "write 0x%x to 0x%x FAILED\n", value, addr); in rf69_write_reg()
67 dev_dbg(&spi->dev, "wrote 0x%x to reg 0x%x\n", value, addr); in rf69_write_reg()
75 static int rf69_set_bit(struct spi_device *spi, u8 reg, u8 mask) in rf69_set_bit() argument
79 tmp = rf69_read_reg(spi, reg); in rf69_set_bit()
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| D | rf69.h | 20 int rf69_set_mode(struct spi_device *spi, enum mode mode);
21 int rf69_set_data_mode(struct spi_device *spi, u8 data_mode);
22 int rf69_set_modulation(struct spi_device *spi, enum modulation modulation);
23 int rf69_set_modulation_shaping(struct spi_device *spi,
25 int rf69_set_bit_rate(struct spi_device *spi, u16 bit_rate);
26 int rf69_set_deviation(struct spi_device *spi, u32 deviation);
27 int rf69_set_frequency(struct spi_device *spi, u32 frequency);
28 int rf69_enable_amplifier(struct spi_device *spi, u8 amplifier_mask);
29 int rf69_disable_amplifier(struct spi_device *spi, u8 amplifier_mask);
30 int rf69_set_output_power_level(struct spi_device *spi, u8 power_level);
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| /Linux-v5.4/drivers/net/wan/ |
| D | slic_ds26522.c | 39 static void slic_write(struct spi_device *spi, u16 addr, in slic_write() argument
51 spi_write(spi, &temp[0], SLIC_THREE_LEN); in slic_write()
54 static u8 slic_read(struct spi_device *spi, u16 addr) in slic_read() argument
63 spi_write_then_read(spi, &temp[0], SLIC_TWO_LEN, &data, in slic_read()
70 static bool get_slic_product_code(struct spi_device *spi) in get_slic_product_code() argument
74 device_id = slic_read(spi, DS26522_IDR_ADDR); in get_slic_product_code()
81 static void ds26522_e1_spec_config(struct spi_device *spi) in ds26522_e1_spec_config() argument
84 slic_write(spi, DS26522_RMMR_ADDR, DS26522_RMMR_E1); in ds26522_e1_spec_config()
87 slic_write(spi, DS26522_TMMR_ADDR, DS26522_TMMR_E1); in ds26522_e1_spec_config()
90 slic_write(spi, DS26522_RMMR_ADDR, in ds26522_e1_spec_config()
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| /Linux-v5.4/drivers/video/backlight/ |
| D | ili922x.c | 137 struct spi_device *spi; member
147 static int ili922x_read_status(struct spi_device *spi, u16 *rs) in ili922x_read_status() argument
160 CHECK_FREQ_REG(spi, &xfer); in ili922x_read_status()
174 ret = spi_sync(spi, &msg); in ili922x_read_status()
176 dev_dbg(&spi->dev, "Error sending SPI message 0x%x", ret); in ili922x_read_status()
190 static int ili922x_read(struct spi_device *spi, u8 reg, u16 *rx) in ili922x_read() argument
204 CHECK_FREQ_REG(spi, &xfer_regindex); in ili922x_read()
225 CHECK_FREQ_REG(spi, &xfer_regvalue); in ili922x_read()
228 ret = spi_sync(spi, &msg); in ili922x_read()
230 dev_dbg(&spi->dev, "Error sending SPI message 0x%x", ret); in ili922x_read()
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| D | l4f00242t03.c | 26 struct spi_device *spi; member
46 static void l4f00242t03_lcd_init(struct spi_device *spi) in l4f00242t03_lcd_init() argument
48 struct l4f00242t03_pdata *pdata = dev_get_platdata(&spi->dev); in l4f00242t03_lcd_init()
49 struct l4f00242t03_priv *priv = spi_get_drvdata(spi); in l4f00242t03_lcd_init()
53 dev_dbg(&spi->dev, "initializing LCD\n"); in l4f00242t03_lcd_init()
57 dev_err(&spi->dev, "failed to set the IO regulator voltage.\n"); in l4f00242t03_lcd_init()
62 dev_err(&spi->dev, "failed to enable the IO regulator.\n"); in l4f00242t03_lcd_init()
68 dev_err(&spi->dev, "failed to set the core regulator voltage.\n"); in l4f00242t03_lcd_init()
74 dev_err(&spi->dev, "failed to enable the core regulator.\n"); in l4f00242t03_lcd_init()
83 spi_write(spi, (const u8 *)cmd, ARRAY_SIZE(cmd) * sizeof(u16)); in l4f00242t03_lcd_init()
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| /Linux-v5.4/drivers/staging/greybus/ |
| D | spilib.c | 45 static struct spi_master *get_master_from_spi(struct gb_spilib *spi) in get_master_from_spi() argument
47 return gb_connection_get_data(spi->connection); in get_master_from_spi()
95 static void clean_xfer_state(struct gb_spilib *spi) in clean_xfer_state() argument
97 spi->first_xfer = NULL; in clean_xfer_state()
98 spi->last_xfer = NULL; in clean_xfer_state()
99 spi->rx_xfer_offset = 0; in clean_xfer_state()
100 spi->tx_xfer_offset = 0; in clean_xfer_state()
101 spi->last_xfer_size = 0; in clean_xfer_state()
102 spi->op_timeout = 0; in clean_xfer_state()
105 static bool is_last_xfer_done(struct gb_spilib *spi) in is_last_xfer_done() argument
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| /Linux-v5.4/drivers/media/pci/netup_unidvb/ |
| D | netup_unidvb_spi.c | 69 irqreturn_t netup_spi_interrupt(struct netup_spi *spi) in netup_spi_interrupt() argument
74 if (!spi) in netup_spi_interrupt()
77 spin_lock_irqsave(&spi->lock, flags); in netup_spi_interrupt()
78 reg = readw(&spi->regs->control_stat); in netup_spi_interrupt()
80 spin_unlock_irqrestore(&spi->lock, flags); in netup_spi_interrupt()
81 dev_dbg(&spi->master->dev, in netup_spi_interrupt()
85 writew(reg | NETUP_SPI_CTRL_IRQ, &spi->regs->control_stat); in netup_spi_interrupt()
86 reg = readw(&spi->regs->control_stat); in netup_spi_interrupt()
87 writew(reg & ~NETUP_SPI_CTRL_IMASK, &spi->regs->control_stat); in netup_spi_interrupt()
88 spi->state = SPI_STATE_DONE; in netup_spi_interrupt()
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| /Linux-v5.4/drivers/net/can/spi/ |
| D | mcp251x.c | 204 struct spi_device *spi; member
232 static inline int mcp251x_is_##_model(struct spi_device *spi) \
234 struct mcp251x_priv *priv = spi_get_drvdata(spi); \
265 static int mcp251x_spi_trans(struct spi_device *spi, int len) in mcp251x_spi_trans() argument
267 struct mcp251x_priv *priv = spi_get_drvdata(spi); in mcp251x_spi_trans()
280 ret = spi_sync(spi, &m); in mcp251x_spi_trans()
282 dev_err(&spi->dev, "spi transfer failed: ret = %d\n", ret); in mcp251x_spi_trans()
286 static u8 mcp251x_read_reg(struct spi_device *spi, u8 reg) in mcp251x_read_reg() argument
288 struct mcp251x_priv *priv = spi_get_drvdata(spi); in mcp251x_read_reg()
294 mcp251x_spi_trans(spi, 3); in mcp251x_read_reg()
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| D | hi311x.c | 147 struct spi_device *spi; member
199 static int hi3110_spi_trans(struct spi_device *spi, int len) in hi3110_spi_trans() argument
201 struct hi3110_priv *priv = spi_get_drvdata(spi); in hi3110_spi_trans()
214 ret = spi_sync(spi, &m); in hi3110_spi_trans()
217 dev_err(&spi->dev, "spi transfer failed: ret = %d\n", ret); in hi3110_spi_trans()
221 static u8 hi3110_cmd(struct spi_device *spi, u8 command) in hi3110_cmd() argument
223 struct hi3110_priv *priv = spi_get_drvdata(spi); in hi3110_cmd()
226 dev_dbg(&spi->dev, "hi3110_cmd: %02X\n", command); in hi3110_cmd()
228 return hi3110_spi_trans(spi, 1); in hi3110_cmd()
231 static u8 hi3110_read(struct spi_device *spi, u8 command) in hi3110_read() argument
[all …]
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| /Linux-v5.4/drivers/media/dvb-frontends/cxd2880/ |
| D | cxd2880_spi_device.c | 14 static int cxd2880_spi_device_write(struct cxd2880_spi *spi, in cxd2880_spi_device_write() argument
22 if (!spi || !spi->user || !data || size == 0) in cxd2880_spi_device_write()
25 spi_device = spi->user; in cxd2880_spi_device_write()
33 result = spi_sync(spi_device->spi, &msg); in cxd2880_spi_device_write()
41 static int cxd2880_spi_device_write_read(struct cxd2880_spi *spi, in cxd2880_spi_device_write_read() argument
50 if (!spi || !spi->user || !tx_data || in cxd2880_spi_device_write_read()
54 spi_device = spi->user; in cxd2880_spi_device_write_read()
56 result = spi_write_then_read(spi_device->spi, tx_data, in cxd2880_spi_device_write_read()
70 struct spi_device *spi = spi_device->spi; in cxd2880_spi_device_initialize() local
74 spi->mode = SPI_MODE_0; in cxd2880_spi_device_initialize()
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| /Linux-v5.4/drivers/misc/ |
| D | lattice-ecp3-config.c | 67 struct spi_device *spi = (struct spi_device *)context; in firmware_load() local
68 struct fpga_data *data = spi_get_drvdata(spi); in firmware_load()
79 dev_err(&spi->dev, "Cannot load firmware, aborting\n"); in firmware_load()
84 dev_err(&spi->dev, "Error: Firmware size is 0!\n"); in firmware_load()
95 ret = spi_write_then_read(spi, txbuf, 8, rxbuf, rx_len); in firmware_load()
97 dev_dbg(&spi->dev, "FPGA JTAG ID=%08x\n", jedec_id); in firmware_load()
104 dev_err(&spi->dev, in firmware_load()
110 dev_info(&spi->dev, "FPGA %s detected\n", ecp3_dev[i].name); in firmware_load()
113 ret = spi_write_then_read(spi, txbuf, 8, rxbuf, rx_len); in firmware_load()
115 dev_dbg(&spi->dev, "FPGA Status=%08x\n", status); in firmware_load()
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| /Linux-v5.4/drivers/video/fbdev/omap2/omapfb/displays/ |
| D | panel-lgphilips-lb035q02.c | 43 struct spi_device *spi; member
57 static int lb035q02_write_reg(struct spi_device *spi, u8 reg, u16 val) in lb035q02_write_reg() argument
85 return spi_sync(spi, &msg); in lb035q02_write_reg()
88 static void init_lb035q02_panel(struct spi_device *spi) in init_lb035q02_panel() argument
91 lb035q02_write_reg(spi, 0x01, 0x6300); in init_lb035q02_panel()
92 lb035q02_write_reg(spi, 0x02, 0x0200); in init_lb035q02_panel()
93 lb035q02_write_reg(spi, 0x03, 0x0177); in init_lb035q02_panel()
94 lb035q02_write_reg(spi, 0x04, 0x04c7); in init_lb035q02_panel()
95 lb035q02_write_reg(spi, 0x05, 0xffc0); in init_lb035q02_panel()
96 lb035q02_write_reg(spi, 0x06, 0xe806); in init_lb035q02_panel()
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| /Linux-v5.4/drivers/media/v4l2-core/ |
| D | v4l2-spi.c | 13 struct spi_device *spi = v4l2_get_subdevdata(sd); in v4l2_spi_subdev_unregister() local
15 if (spi && !spi->dev.of_node && !spi->dev.fwnode) in v4l2_spi_subdev_unregister()
16 spi_unregister_device(spi); in v4l2_spi_subdev_unregister()
19 void v4l2_spi_subdev_init(struct v4l2_subdev *sd, struct spi_device *spi, in v4l2_spi_subdev_init() argument
25 sd->owner = spi->dev.driver->owner; in v4l2_spi_subdev_init()
26 sd->dev = &spi->dev; in v4l2_spi_subdev_init()
28 v4l2_set_subdevdata(sd, spi); in v4l2_spi_subdev_init()
29 spi_set_drvdata(spi, sd); in v4l2_spi_subdev_init()
32 spi->dev.driver->name, dev_name(&spi->dev)); in v4l2_spi_subdev_init()
41 struct spi_device *spi = NULL; in v4l2_spi_new_subdev() local
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| /Linux-v5.4/drivers/rtc/ |
| D | rtc-ds1302.c | 41 struct spi_device *spi = dev_get_drvdata(dev); in ds1302_rtc_set_time() local
51 status = spi_write_then_read(spi, buf, 2, in ds1302_rtc_set_time()
70 return spi_write_then_read(spi, buf, sizeof(buf), in ds1302_rtc_set_time()
76 struct spi_device *spi = dev_get_drvdata(dev); in ds1302_rtc_get_time() local
84 status = spi_write_then_read(spi, &addr, sizeof(addr), in ds1302_rtc_get_time()
106 static int ds1302_probe(struct spi_device *spi) in ds1302_probe() argument
118 if (spi->bits_per_word && (spi->bits_per_word != 8)) { in ds1302_probe()
119 dev_err(&spi->dev, "bad word length\n"); in ds1302_probe()
121 } else if (spi->max_speed_hz > 2000000) { in ds1302_probe()
122 dev_err(&spi->dev, "speed is too high\n"); in ds1302_probe()
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| /Linux-v5.4/drivers/iio/chemical/ |
| D | bme680_spi.c | 16 struct spi_device *spi; member
28 struct spi_device *spi = ctx->spi; in bme680_regmap_spi_select_page() local
41 ret = spi_write_then_read(spi, buf, 1, buf + 1, 1); in bme680_regmap_spi_select_page()
43 dev_err(&spi->dev, "failed to set page %u\n", page); in bme680_regmap_spi_select_page()
53 ret = spi_write(spi, buf, 2); in bme680_regmap_spi_select_page()
55 dev_err(&spi->dev, "failed to set page %u\n", page); in bme680_regmap_spi_select_page()
68 struct spi_device *spi = ctx->spi; in bme680_regmap_spi_write() local
84 return spi_write(spi, buf, 2); in bme680_regmap_spi_write()
91 struct spi_device *spi = ctx->spi; in bme680_regmap_spi_read() local
101 return spi_write_then_read(spi, &addr, 1, val, val_size); in bme680_regmap_spi_read()
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| /Linux-v5.4/drivers/mtd/devices/ |
| D | mtd_dataflash.c | 94 struct spi_device *spi; member
113 static inline int dataflash_status(struct spi_device *spi) in dataflash_status() argument
118 return spi_w8r8(spi, OP_READ_STATUS); in dataflash_status()
125 static int dataflash_waitready(struct spi_device *spi) in dataflash_waitready() argument
130 status = dataflash_status(spi); in dataflash_waitready()
132 dev_dbg(&spi->dev, "status %d?\n", status); in dataflash_waitready()
151 struct spi_device *spi = priv->spi; in dataflash_erase() local
158 dev_dbg(&spi->dev, "erase addr=0x%llx len 0x%llx\n", in dataflash_erase()
192 dev_dbg(&spi->dev, "ERASE %s: (%x) %x %x %x [%i]\n", in dataflash_erase()
197 status = spi_sync(spi, &msg); in dataflash_erase()
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| /Linux-v5.4/net/ipv6/ |
| D | xfrm6_tunnel.c | 31 u32 spi; member
48 u32 spi; member
69 static inline unsigned int xfrm6_tunnel_spi_hash_byspi(u32 spi) in xfrm6_tunnel_spi_hash_byspi() argument
71 return spi % XFRM6_TUNNEL_SPI_BYSPI_HSIZE; in xfrm6_tunnel_spi_hash_byspi()
92 u32 spi; in xfrm6_tunnel_spi_lookup() local
96 spi = x6spi ? x6spi->spi : 0; in xfrm6_tunnel_spi_lookup()
98 return htonl(spi); in xfrm6_tunnel_spi_lookup()
102 static int __xfrm6_tunnel_spi_check(struct net *net, u32 spi) in __xfrm6_tunnel_spi_check() argument
106 int index = xfrm6_tunnel_spi_hash_byspi(spi); in __xfrm6_tunnel_spi_check()
111 if (x6spi->spi == spi) in __xfrm6_tunnel_spi_check()
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