Lines Matching refs:spi
16 #include <linux/spi/spi.h>
37 static void slic_write(struct spi_device *spi, u16 addr,
48 /* write spi addr and value */
49 spi_write(spi, &temp[0], SLIC_THREE_LEN);
52 static u8 slic_read(struct spi_device *spi, u16 addr)
61 spi_write_then_read(spi, &temp[0], SLIC_TWO_LEN, &data,
68 static bool get_slic_product_code(struct spi_device *spi)
72 device_id = slic_read(spi, DS26522_IDR_ADDR);
79 static void ds26522_e1_spec_config(struct spi_device *spi)
82 slic_write(spi, DS26522_RMMR_ADDR, DS26522_RMMR_E1);
85 slic_write(spi, DS26522_TMMR_ADDR, DS26522_TMMR_E1);
88 slic_write(spi, DS26522_RMMR_ADDR,
89 slic_read(spi, DS26522_RMMR_ADDR) | DS26522_RMMR_FRM_EN);
92 slic_write(spi, DS26522_TMMR_ADDR,
93 slic_read(spi, DS26522_TMMR_ADDR) | DS26522_TMMR_FRM_EN);
96 slic_write(spi, DS26522_RCR1_ADDR,
100 slic_write(spi, DS26522_RIOCR_ADDR,
104 slic_write(spi, DS26522_TCR1_ADDR, DS26522_TCR1_TB8ZS);
107 slic_write(spi, DS26522_TIOCR_ADDR,
111 slic_write(spi, DS26522_E1TAF_ADDR, DS26522_E1TAF_DEFAULT);
114 slic_write(spi, DS26522_E1TNAF_ADDR, DS26522_E1TNAF_DEFAULT);
117 slic_write(spi, DS26522_RMMR_ADDR, slic_read(spi, DS26522_RMMR_ADDR) |
121 slic_write(spi, DS26522_TMMR_ADDR, slic_read(spi, DS26522_TMMR_ADDR) |
125 slic_write(spi, DS26522_LTRCR_ADDR, DS26522_LTRCR_E1);
128 slic_write(spi, DS26522_LTITSR_ADDR,
132 slic_write(spi, DS26522_LRISMR_ADDR,
136 slic_write(spi, DS26522_LMCR_ADDR, DS26522_LMCR_TE);
139 static int slic_ds26522_init_configure(struct spi_device *spi)
144 slic_write(spi, DS26522_GTCCR_ADDR, DS26522_GTCCR_BPREFSEL_REFCLKIN |
147 slic_write(spi, DS26522_GTCR2_ADDR, DS26522_GTCR2_TSSYNCOUT);
148 slic_write(spi, DS26522_GFCR_ADDR, DS26522_GFCR_BPCLK_2048KHZ);
151 slic_write(spi, DS26522_GTCR1_ADDR, DS26522_GTCR1);
154 slic_write(spi, DS26522_GLSRR_ADDR, DS26522_GLSRR_RESET);
157 slic_write(spi, DS26522_GFSRR_ADDR, DS26522_GFSRR_RESET);
161 slic_write(spi, DS26522_GLSRR_ADDR, DS26522_GLSRR_NORMAL);
162 slic_write(spi, DS26522_GFSRR_ADDR, DS26522_GFSRR_NORMAL);
165 slic_write(spi, DS26522_RMMR_ADDR, DS26522_RMMR_SFTRST);
168 slic_write(spi, DS26522_TMMR_ADDR, DS26522_TMMR_SFTRST);
175 slic_write(spi, addr, 0);
179 slic_write(spi, addr, 0);
183 slic_write(spi, addr, 0);
187 slic_write(spi, addr, 0);
190 ds26522_e1_spec_config(spi);
192 slic_write(spi, DS26522_GTCR1_ADDR, 0x00);
197 static void slic_ds26522_remove(struct spi_device *spi)
202 static int slic_ds26522_probe(struct spi_device *spi)
206 g_spi = spi;
207 spi->bits_per_word = 8;
209 if (!get_slic_product_code(spi))
212 ret = slic_ds26522_init_configure(spi);
214 pr_info("DS26522 cs%d configured\n", spi_get_chipselect(spi, 0));
223 MODULE_DEVICE_TABLE(spi, slic_ds26522_id);