61 static void mxc_spi_cs_activate(struct mxc_spi_slave *mxcs)  in mxc_spi_cs_activate()  argument
64 		dm_gpio_set_value(&mxcs->ss, mxcs->ss_pol);  in mxc_spi_cs_activate()
66 		if (mxcs->gpio > 0)  in mxc_spi_cs_activate()
67 			gpio_set_value(mxcs->gpio, mxcs->ss_pol);  in mxc_spi_cs_activate()
71 static void mxc_spi_cs_deactivate(struct mxc_spi_slave *mxcs)  in mxc_spi_cs_deactivate()  argument
74 		dm_gpio_set_value(&mxcs->ss, !(mxcs->ss_pol));  in mxc_spi_cs_deactivate()
76 		if (mxcs->gpio > 0)  in mxc_spi_cs_deactivate()
77 			gpio_set_value(mxcs->gpio, !(mxcs->ss_pol));  in mxc_spi_cs_deactivate()
93 static s32 spi_cfg_mxc(struct mxc_spi_slave *mxcs, unsigned int cs)  in spi_cfg_mxc()  argument
98 	unsigned int max_hz = mxcs->max_hz;  in spi_cfg_mxc()
99 	unsigned int mode = mxcs->mode;  in spi_cfg_mxc()
124 	mxcs->ctrl_reg = ctrl_reg;  in spi_cfg_mxc()
131 static s32 spi_cfg_mxc(struct mxc_spi_slave *mxcs, unsigned int cs)  in spi_cfg_mxc()  argument
137 	struct cspi_regs *regs = (struct cspi_regs *)mxcs->base;  in spi_cfg_mxc()
138 	unsigned int max_hz = mxcs->max_hz;  in spi_cfg_mxc()
139 	unsigned int mode = mxcs->mode;  in spi_cfg_mxc()
208 	mxcs->ctrl_reg = reg_ctrl;  in spi_cfg_mxc()
209 	mxcs->cfg_reg = reg_config;  in spi_cfg_mxc()
219 int spi_xchg_single(struct mxc_spi_slave *mxcs, unsigned int bitlen,  in spi_xchg_single()  argument
224 	struct cspi_regs *regs = (struct cspi_regs *)mxcs->base;  in spi_xchg_single()
231 	mxcs->ctrl_reg = (mxcs->ctrl_reg &  in spi_xchg_single()
235 	reg_write(&regs->ctrl, mxcs->ctrl_reg | MXC_CSPICTRL_EN);  in spi_xchg_single()
237 	reg_write(&regs->cfg, mxcs->cfg_reg);  in spi_xchg_single()
284 	reg_write(&regs->ctrl, mxcs->ctrl_reg |  in spi_xchg_single()
334 static int mxc_spi_xfer_internal(struct mxc_spi_slave *mxcs,  in mxc_spi_xfer_internal()  argument
345 	if (!mxcs)  in mxc_spi_xfer_internal()
349 		mxc_spi_cs_activate(mxcs);  in mxc_spi_xfer_internal()
359 		ret = spi_xchg_single(mxcs, n_bits, p_outbuf, p_inbuf, 0);  in mxc_spi_xfer_internal()
371 		mxc_spi_cs_deactivate(mxcs);  in mxc_spi_xfer_internal()
377 static int mxc_spi_claim_bus_internal(struct mxc_spi_slave *mxcs, int cs)  in mxc_spi_claim_bus_internal()  argument
379 	struct cspi_regs *regs = (struct cspi_regs *)mxcs->base;  in mxc_spi_claim_bus_internal()
384 	ret = spi_cfg_mxc(mxcs, cs);  in mxc_spi_claim_bus_internal()
399 	struct mxc_spi_slave *mxcs = to_mxc_spi_slave(slave);  in spi_xfer()  local
401 	return mxc_spi_xfer_internal(mxcs, bitlen, dout, din, flags);  in spi_xfer()
416 static int setup_cs_gpio(struct mxc_spi_slave *mxcs,  in setup_cs_gpio()  argument
421 	mxcs->gpio = board_spi_cs_gpio(bus, cs);  in setup_cs_gpio()
422 	if (mxcs->gpio == -1)  in setup_cs_gpio()
425 	gpio_request(mxcs->gpio, "spi-cs");  in setup_cs_gpio()
426 	ret = gpio_direction_output(mxcs->gpio, !(mxcs->ss_pol));  in setup_cs_gpio()
428 		printf("mxc_spi: cannot setup gpio %d\n", mxcs->gpio);  in setup_cs_gpio()
442 	struct mxc_spi_slave *mxcs;  in spi_setup_slave()  local
453 	mxcs = spi_alloc_slave(struct mxc_spi_slave, bus, cs);  in spi_setup_slave()
454 	if (!mxcs) {  in spi_setup_slave()
459 	mxcs->ss_pol = (mode & SPI_CS_HIGH) ? 1 : 0;  in spi_setup_slave()
461 	ret = setup_cs_gpio(mxcs, bus, cs);  in spi_setup_slave()
463 		free(mxcs);  in spi_setup_slave()
467 	mxcs->base = spi_bases[bus];  in spi_setup_slave()
468 	mxcs->max_hz = max_hz;  in spi_setup_slave()
469 	mxcs->mode = mode;  in spi_setup_slave()
471 	return &mxcs->slave;  in spi_setup_slave()
476 	struct mxc_spi_slave *mxcs = to_mxc_spi_slave(slave);  in spi_free_slave()  local
478 	free(mxcs);  in spi_free_slave()
483 	struct mxc_spi_slave *mxcs = to_mxc_spi_slave(slave);  in spi_claim_bus()  local
485 	return mxc_spi_claim_bus_internal(mxcs, slave->cs);  in spi_claim_bus()
497 	struct mxc_spi_slave *mxcs = dev_get_platdata(bus);  in mxc_spi_probe()  local
512 	ret = dm_gpio_set_value(&plat->ss, !(mxcs->ss_pol));  in mxc_spi_probe()
518 	mxcs->max_hz = fdtdec_get_int(blob, node, "spi-max-frequency",  in mxc_spi_probe()
527 	struct mxc_spi_slave *mxcs = dev_get_platdata(dev->parent);  in mxc_spi_xfer()  local
530 	return mxc_spi_xfer_internal(mxcs, bitlen, dout, din, flags);  in mxc_spi_xfer()
535 	struct mxc_spi_slave *mxcs = dev_get_platdata(dev->parent);  in mxc_spi_claim_bus()  local
538 	return mxc_spi_claim_bus_internal(mxcs, slave_plat->cs);  in mxc_spi_claim_bus()
554 	struct mxc_spi_slave *mxcs = dev_get_platdata(bus);  in mxc_spi_set_mode()  local
556 	mxcs->mode = mode;  in mxc_spi_set_mode()
557 	mxcs->ss_pol = (mode & SPI_CS_HIGH) ? 1 : 0;  in mxc_spi_set_mode()