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imx233: fix ssp for stmp3600 and stmp3700
Using the ssp macros, we can easily handle the stmp3600 which has a single ssp block. Take care of all the nasty differences between targets like bus width Change-Id: If98a091cc262e9e6834f6fb9826f7c5515bfe621
This commit is contained in:
Amaury Pouly
parent
86ff093267
commit
b74a459189
2 changed files with 63 additions and 0 deletions
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@ -33,12 +33,21 @@
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#endif
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/* Hack to handle both single and multi devices at once */
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#if IMX233_SUBTARGET < 3700
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#define SSP_SETn(reg, n, field) BF_SET(reg, field)
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#define SSP_CLRn(reg, n, field) BF_CLR(reg, field)
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#define SSP_RDn(reg, n, field) BF_RD(reg, field)
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#define SSP_WRn(reg, n, field, val) BF_WR(reg, field, val)
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#define SSP_WRn_V(reg, n, field, val) BF_WR_V(reg, field, val)
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#define SSP_REGn(reg, n) HW_##reg
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#else
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#define SSP_SETn(reg, n, field) BF_SETn(reg, n, field)
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#define SSP_CLRn(reg, n, field) BF_CLRn(reg, n, field)
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#define SSP_RDn(reg, n, field) BF_RDn(reg, n, field)
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#define SSP_WRn(reg, n, field, val) BF_WRn(reg, n, field, val)
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#define SSP_WRn_V(reg, n, field, val) BF_WRn_V(reg, n, field, val)
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#define SSP_REGn(reg, n) HW_##reg(n)
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#endif
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/* Used for DMA */
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struct ssp_dma_command_t
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@ -126,7 +135,9 @@ void imx233_ssp_start(int ssp)
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* intdiv = 5 => clk_ssp = 96Mhz */
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imx233_clkctrl_enable(CLK_SSP, false);
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imx233_clkctrl_set_div(CLK_SSP, 5);
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#if IMX233_SUBTARGET >= 3700
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imx233_clkctrl_set_bypass(CLK_SSP, false); /* use IO */
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#endif
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imx233_clkctrl_enable(CLK_SSP, true);
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}
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ssp_nr_in_use++;
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@ -178,12 +189,17 @@ void imx233_ssp_setup_ssp1_sd_mmc_pins(bool enable_pullups, unsigned bus_width,
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}
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if(bus_width >= 8)
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{
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#ifdef VPIN_SSP1_D4
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if(use_alt)
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{
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#ifdef VPIN_SSP1_D4_ALT
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imx233_pinctrl_setup_vpin(VPIN_SSP1_D4_ALT, "ssp1_d4", drive_strength, enable_pullups);
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imx233_pinctrl_setup_vpin(VPIN_SSP1_D5_ALT, "ssp1_d5", drive_strength, enable_pullups);
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imx233_pinctrl_setup_vpin(VPIN_SSP1_D6_ALT, "ssp1_d6", drive_strength, enable_pullups);
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imx233_pinctrl_setup_vpin(VPIN_SSP1_D7_ALT, "ssp1_d7", drive_strength, enable_pullups);
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#else
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panicf("there is ssp1 alt on this soc!");
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#endif
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}
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else
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{
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@ -192,6 +208,9 @@ void imx233_ssp_setup_ssp1_sd_mmc_pins(bool enable_pullups, unsigned bus_width,
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imx233_pinctrl_setup_vpin(VPIN_SSP1_D6, "ssp1_d6", drive_strength, enable_pullups);
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imx233_pinctrl_setup_vpin(VPIN_SSP1_D7, "ssp1_d7", drive_strength, enable_pullups);
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}
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#else
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panicf("ssp1 bus width is limited to 4 on this soc!");
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#endif
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}
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}
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@ -201,6 +220,7 @@ void imx233_ssp_setup_ssp2_sd_mmc_pins(bool enable_pullups, unsigned bus_width,
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(void) enable_pullups;
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(void) bus_width;
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(void) drive_strength;
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#ifdef VPIN_SSP2_CMD
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/* SSP_{CMD,SCK} */
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imx233_pinctrl_setup_vpin(VPIN_SSP2_CMD, "ssp2_cmd", drive_strength, enable_pullups);
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imx233_pinctrl_setup_vpin(VPIN_SSP2_SCK, "ssp2_sck", drive_strength, false);
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@ -219,6 +239,9 @@ void imx233_ssp_setup_ssp2_sd_mmc_pins(bool enable_pullups, unsigned bus_width,
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imx233_pinctrl_setup_vpin(VPIN_SSP2_D6, "ssp2_d6", drive_strength, enable_pullups);
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imx233_pinctrl_setup_vpin(VPIN_SSP2_D7, "ssp2_d7", drive_strength, enable_pullups);
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}
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#else
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panicf("there is no ssp2 on this soc!");
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#endif
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}
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void imx233_ssp_set_mode(int ssp, unsigned mode)
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@ -245,13 +268,22 @@ void imx233_ssp_set_bus_width(int ssp, unsigned width)
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{
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case 1: ssp_bus_width[ssp - 1] = BV_SSP_CTRL0_BUS_WIDTH__ONE_BIT; break;
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case 4: ssp_bus_width[ssp - 1] = BV_SSP_CTRL0_BUS_WIDTH__FOUR_BIT; break;
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/* STMP3600 cannot do 8-bit bus */
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#if IMX233_SUBTARGET >= 3700
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case 8: ssp_bus_width[ssp - 1] = BV_SSP_CTRL0_BUS_WIDTH__EIGHT_BIT; break;
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#endif
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default: panicf("ssp: target doesn't handle %d-bits bus", width);
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}
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}
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void imx233_ssp_set_block_size(int ssp, unsigned log_block_size)
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{
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ASSERT_SSP(ssp)
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/* STMP3600 cannot change block size */
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#if IMX233_SUBTARGET < 3600
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if(log_block_size != 9)
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panicf("ssp: target doesn't block size %d", 1 << log_block_size);
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#endif
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ssp_log_block_size[ssp - 1] = log_block_size;
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}
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@ -268,8 +300,13 @@ enum imx233_ssp_error_t imx233_ssp_sd_mmc_transfer(int ssp, uint8_t cmd,
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imx233_dma_enable_channel_interrupt(APB_SSP(ssp), true);
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unsigned xfer_size = block_count * (1 << ssp_log_block_size[ssp - 1]);
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#if IMX233_SUBTARGET < 3700
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ssp_dma_cmd[ssp - 1].cmd0 = BF_OR1(SSP_CMD0, CMD(cmd));
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#else
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ssp_dma_cmd[ssp - 1].cmd0 = BF_OR4(SSP_CMD0, CMD(cmd), APPEND_8CYC(1),
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BLOCK_SIZE(ssp_log_block_size[ssp - 1]), BLOCK_COUNT(block_count - 1));
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#endif
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ssp_dma_cmd[ssp - 1].cmd1 = cmd_arg;
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/* setup all flags and run */
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ssp_dma_cmd[ssp - 1].ctrl0 = BF_OR9(SSP_CTRL0, XFER_COUNT(xfer_size),
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@ -322,10 +359,12 @@ enum imx233_ssp_error_t imx233_ssp_sd_mmc_transfer(int ssp, uint8_t cmd,
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void imx233_ssp_sd_mmc_power_up_sequence(int ssp)
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{
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ASSERT_SSP(ssp)
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#if IMX233_SUBTARGET >= 3780
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SSP_CLRn(SSP_CMD0, ssp, SLOW_CLKING_EN);
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SSP_SETn(SSP_CMD0, ssp, CONT_CLKING_EN);
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mdelay(1);
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SSP_CLRn(SSP_CMD0, ssp, CONT_CLKING_EN);
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#endif
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}
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static int ssp_detect_oneshot_callback(struct timeout *tmo)
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@ -353,7 +392,13 @@ void imx233_ssp_sdmmc_setup_detect(int ssp, bool enable, ssp_detect_cb_t fn,
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ASSERT_SSP(ssp)
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vpin_t vpin = VPIN_SSP1_DET;
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if(ssp == 2)
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{
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#ifdef VPIN_SSP2_DET
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vpin = VPIN_SSP2_DET;
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#else
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panicf("there is no ssp2 det on this soc!");
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#endif
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}
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unsigned bank = VPIN_UNPACK_BANK(vpin), pin = VPIN_UNPACK_PIN(vpin);
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ssp_detect_cb[ssp - 1] = fn;
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ssp_detect_invert[ssp - 1] = invert;
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@ -29,21 +29,38 @@
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#include "regs/regs-ssp.h"
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#if IMX233_SUBTARGET < 3700
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#define IMX233_NR_SSP 1
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#else
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#define IMX233_NR_SSP 2
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#endif
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/* ssp can value 1 or 2 */
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#if IMX233_NR_SSP >= 2
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#define __SSP_SELECT(ssp, ssp1, ssp2) ((ssp) == 1 ? (ssp1) : (ssp2))
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#else
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#define __SSP_SELECT(ssp, ssp1, ssp2) (ssp1)
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#endif
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#define INT_SRC_SSP_DMA(ssp) __SSP_SELECT(ssp, INT_SRC_SSP1_DMA, INT_SRC_SSP2_DMA)
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#define INT_SRC_SSP_ERROR(ssp) __SSP_SELECT(ssp, INT_SRC_SSP1_ERROR, INT_SRC_SSP2_ERROR)
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#define BP_SSP_CTRL1_ALL_IRQ 0
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#if IMX233_SUBTARGET < 3700
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#define BM_SSP_CTRL1_ALL_IRQ \
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BM_OR7(SSP_CTRL1, SDIO_IRQ, RESP_ERR_IRQ, RESP_TIMEOUT_IRQ, DATA_TIMEOUT_IRQ, \
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DATA_CRC_IRQ, RECV_TIMEOUT_IRQ, RECV_OVRFLW_IRQ)
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#define BM_SSP_CTRL1_ALL_IRQ_EN \
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BM_OR7(SSP_CTRL1, SDIO_IRQ_EN, RESP_ERR_IRQ_EN, RESP_TIMEOUT_IRQ_EN, DATA_TIMEOUT_IRQ_EN, \
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DATA_CRC_IRQ_EN, RECV_TIMEOUT_IRQ_EN, RECV_OVRFLW_IRQ_EN)
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#else
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#define BM_SSP_CTRL1_ALL_IRQ \
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BM_OR8(SSP_CTRL1, SDIO_IRQ, RESP_ERR_IRQ, RESP_TIMEOUT_IRQ, DATA_TIMEOUT_IRQ, \
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DATA_CRC_IRQ, FIFO_UNDERRUN_IRQ, RECV_TIMEOUT_IRQ, FIFO_OVERRUN_IRQ)
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#define BM_SSP_CTRL1_ALL_IRQ_EN \
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BM_OR8(SSP_CTRL1, SDIO_IRQ_EN, RESP_ERR_IRQ_EN, RESP_TIMEOUT_IRQ_EN, DATA_TIMEOUT_IRQ_EN, \
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DATA_CRC_IRQ_EN, FIFO_UNDERRUN_EN, RECV_TIMEOUT_IRQ_EN, FIFO_OVERRUN_IRQ_EN)
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#endif
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#define BM_SSP_CTRL1_TIMEOUT_IRQ \
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BM_OR3(SSP_CTRL1, RESP_TIMEOUT_IRQ, DATA_TIMEOUT_IRQ, RECV_TIMEOUT_IRQ)
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@ -80,6 +97,7 @@ void imx233_ssp_set_block_size(int ssp, unsigned log_block_size);
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enum imx233_ssp_error_t imx233_ssp_sd_mmc_transfer(int ssp, uint8_t cmd,
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uint32_t cmd_arg, enum imx233_ssp_resp_t resp, void *buffer, unsigned block_count,
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bool wait4irq, bool read, uint32_t *resp_ptr);
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/* pullups/alternative are ignored on targets which don't support it */
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void imx233_ssp_setup_ssp1_sd_mmc_pins(bool enable_pullups, unsigned bus_width,
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unsigned drive_strength, bool use_alt);
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void imx233_ssp_setup_ssp2_sd_mmc_pins(bool enable_pullups, unsigned bus_width,
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