43 static inline void xtfpga_spi_wait_busy(struct xtfpga_spi *xspi)  in xtfpga_spi_wait_busy()  argument
47 	for (i = 0; xtfpga_spi_read32(xspi, XTFPGA_SPI_BUSY) &&  in xtfpga_spi_wait_busy()
56 	struct xtfpga_spi *xspi = spi_controller_get_devdata(spi->controller);  in xtfpga_spi_txrx_word()  local
58 	xspi->data = (xspi->data << bits) | (v & GENMASK(bits - 1, 0));  in xtfpga_spi_txrx_word()
59 	xspi->data_sz += bits;  in xtfpga_spi_txrx_word()
60 	if (xspi->data_sz >= 16) {  in xtfpga_spi_txrx_word()
61 		xtfpga_spi_write32(xspi, XTFPGA_SPI_DATA,  in xtfpga_spi_txrx_word()
62 				   xspi->data >> (xspi->data_sz - 16));  in xtfpga_spi_txrx_word()
63 		xspi->data_sz -= 16;  in xtfpga_spi_txrx_word()
64 		xtfpga_spi_write32(xspi, XTFPGA_SPI_START, 1);  in xtfpga_spi_txrx_word()
65 		xtfpga_spi_wait_busy(xspi);  in xtfpga_spi_txrx_word()
66 		xtfpga_spi_write32(xspi, XTFPGA_SPI_START, 0);  in xtfpga_spi_txrx_word()
74 	struct xtfpga_spi *xspi = spi_controller_get_devdata(spi->controller);  in xtfpga_spi_chipselect()  local
76 	WARN_ON(xspi->data_sz != 0);  in xtfpga_spi_chipselect()
77 	xspi->data_sz = 0;  in xtfpga_spi_chipselect()
82 	struct xtfpga_spi *xspi;  in xtfpga_spi_probe()  local
95 	xspi = spi_controller_get_devdata(host);  in xtfpga_spi_probe()
96 	xspi->bitbang.ctlr = host;  in xtfpga_spi_probe()
97 	xspi->bitbang.chipselect = xtfpga_spi_chipselect;  in xtfpga_spi_probe()
98 	xspi->bitbang.txrx_word[SPI_MODE_0] = xtfpga_spi_txrx_word;  in xtfpga_spi_probe()
99 	xspi->regs = devm_platform_ioremap_resource(pdev, 0);  in xtfpga_spi_probe()
100 	if (IS_ERR(xspi->regs))  in xtfpga_spi_probe()
101 		return PTR_ERR(xspi->regs);  in xtfpga_spi_probe()
103 	xtfpga_spi_write32(xspi, XTFPGA_SPI_START, 0);  in xtfpga_spi_probe()
105 	if (xtfpga_spi_read32(xspi, XTFPGA_SPI_BUSY)) {  in xtfpga_spi_probe()
110 	ret = spi_bitbang_start(&xspi->bitbang);  in xtfpga_spi_probe()
123 	struct xtfpga_spi *xspi = spi_controller_get_devdata(host);  in xtfpga_spi_remove()  local
125 	spi_bitbang_stop(&xspi->bitbang);  in xtfpga_spi_remove()