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authorYou-Cheng Syu <youcheng@google.com>2018-12-20 15:41:25 +0800
committerPatrick Georgi <pgeorgi@google.com>2018-12-21 18:13:49 +0000
commit14df2ef729b92fa5e272c67692982606b19853ef (patch)
treeab58c2b26eebf11ea0bd6aedf2646f5d1698e046 /src/soc/mediatek/mt8183
parente956255509b3b614b2c879b645cbc155daf46157 (diff)
downloadcoreboot-14df2ef729b92fa5e272c67692982606b19853ef.tar.xz
mediatek/mt8183: Reduce compiled code size of SPI related code.
Refactor function mtk_spi_set_gpio_pinmux to reduce compiled code size. This change can save us about 552 bytes (before compression). Idea from Julius's comment in https://review.coreboot.org/c/coreboot/+/27498/4 BRANCH=none BUG=b:120588396 TEST=manually boot into kernel Change-Id: I93bc88c535b6a2ff94e85f247cf2d51f60b9b29c Signed-off-by: You-Cheng Syu <youcheng@google.com> Reviewed-on: https://review.coreboot.org/c/30328 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Diffstat (limited to 'src/soc/mediatek/mt8183')
-rw-r--r--src/soc/mediatek/mt8183/spi.c124
1 files changed, 63 insertions, 61 deletions
diff --git a/src/soc/mediatek/mt8183/spi.c b/src/soc/mediatek/mt8183/spi.c
index 0088d46a02..c85221c9ab 100644
--- a/src/soc/mediatek/mt8183/spi.c
+++ b/src/soc/mediatek/mt8183/spi.c
@@ -42,69 +42,71 @@ struct mtk_spi_bus spi_bus[SPI_BUS_NUMBER] = {
}
};
-void mtk_spi_set_gpio_pinmux(unsigned int bus,
- enum spi_pad_mask pad_select)
+struct pad_func {
+ u8 pin_id;
+ u8 func;
+};
+
+#define PAD_FUNC(name, func) {PAD_##name##_ID, PAD_##name##_FUNC_##func}
+
+static const struct pad_func pad0_funcs[SPI_BUS_NUMBER][4] = {
+ {
+ PAD_FUNC(SPI_MI, SPI0_MI),
+ PAD_FUNC(SPI_CSB, SPI0_CSB),
+ PAD_FUNC(SPI_MO, SPI0_MO),
+ PAD_FUNC(SPI_CLK, SPI0_CLK),
+ },
+ {
+ PAD_FUNC(SPI1_MI, SPI1_A_MI),
+ PAD_FUNC(SPI1_CSB, SPI1_A_CSB),
+ PAD_FUNC(SPI1_MO, SPI1_A_MO),
+ PAD_FUNC(SPI1_CLK, SPI1_A_CLK),
+ },
+ {
+ PAD_FUNC(KPCOL1, SPI2_MI),
+ PAD_FUNC(EINT0, SPI2_CSB),
+ PAD_FUNC(EINT1, SPI2_MO),
+ PAD_FUNC(EINT2, SPI2_CLK),
+ },
+ {
+ PAD_FUNC(DPI_D8, SPI3_MI),
+ PAD_FUNC(DPI_D9, SPI3_CSB),
+ PAD_FUNC(DPI_D10, SPI3_MO),
+ PAD_FUNC(DPI_D11, SPI3_CLK),
+ },
+ {
+ PAD_FUNC(DPI_D4, SPI4_MI),
+ PAD_FUNC(DPI_D5, SPI4_CSB),
+ PAD_FUNC(DPI_D6, SPI4_MO),
+ PAD_FUNC(DPI_D7, SPI4_CLK),
+ },
+ {
+ PAD_FUNC(DPI_D0, SPI5_MI),
+ PAD_FUNC(DPI_D1, SPI5_CSB),
+ PAD_FUNC(DPI_D2, SPI5_MO),
+ PAD_FUNC(DPI_D3, SPI5_CLK),
+ }
+};
+
+static const struct pad_func bus1_pad1_funcs[4] = {
+ PAD_FUNC(EINT7, SPI1_B_MI),
+ PAD_FUNC(EINT8, SPI1_B_CSB),
+ PAD_FUNC(EINT9, SPI1_B_MO),
+ PAD_FUNC(EINT10, SPI1_B_CLK),
+};
+
+void mtk_spi_set_gpio_pinmux(unsigned int bus, enum spi_pad_mask pad_select)
{
- switch (bus) {
- case 0:
- if (pad_select == SPI_PAD0_MASK) {
- gpio_set_mode(GPIO(SPI_MI), PAD_SPI_MI_FUNC_SPI0_MI);
- gpio_set_mode(GPIO(SPI_CSB), PAD_SPI_CSB_FUNC_SPI0_CSB);
- gpio_set_mode(GPIO(SPI_MO), PAD_SPI_MO_FUNC_SPI0_MO);
- gpio_set_mode(GPIO(SPI_CLK), PAD_SPI_CLK_FUNC_SPI0_CLK);
- }
- break;
- case 1:
- if (pad_select == SPI_PAD0_MASK) {
- gpio_set_mode(GPIO(SPI1_MI),
- PAD_SPI1_MI_FUNC_SPI1_A_MI);
- gpio_set_mode(GPIO(SPI1_CSB),
- PAD_SPI1_CSB_FUNC_SPI1_A_CSB);
- gpio_set_mode(GPIO(SPI1_MO),
- PAD_SPI1_MO_FUNC_SPI1_A_MO);
- gpio_set_mode(GPIO(SPI1_CLK),
- PAD_SPI1_CLK_FUNC_SPI1_A_CLK);
- }
- if (pad_select == SPI_PAD1_MASK) {
- gpio_set_mode(GPIO(EINT7), PAD_EINT7_FUNC_SPI1_B_MI);
- gpio_set_mode(GPIO(EINT8), PAD_EINT8_FUNC_SPI1_B_CSB);
- gpio_set_mode(GPIO(EINT9), PAD_EINT9_FUNC_SPI1_B_MO);
- gpio_set_mode(GPIO(EINT10), PAD_EINT10_FUNC_SPI1_B_CLK);
- }
- break;
- case 2:
- if (pad_select == SPI_PAD0_MASK) {
- gpio_set_mode(GPIO(KPCOL1), PAD_KPCOL1_FUNC_SPI2_MI);
- gpio_set_mode(GPIO(EINT0), PAD_EINT0_FUNC_SPI2_CSB);
- gpio_set_mode(GPIO(EINT1), PAD_EINT1_FUNC_SPI2_MO);
- gpio_set_mode(GPIO(EINT2), PAD_EINT2_FUNC_SPI2_CLK);
- }
- break;
- case 3:
- if (pad_select == SPI_PAD0_MASK) {
- gpio_set_mode(GPIO(DPI_D8), PAD_DPI_D8_FUNC_SPI3_MI);
- gpio_set_mode(GPIO(DPI_D9), PAD_DPI_D9_FUNC_SPI3_CSB);
- gpio_set_mode(GPIO(DPI_D10), PAD_DPI_D10_FUNC_SPI3_MO);
- gpio_set_mode(GPIO(DPI_D11), PAD_DPI_D11_FUNC_SPI3_CLK);
- }
- break;
- case 4:
- if (pad_select == SPI_PAD0_MASK) {
- gpio_set_mode(GPIO(DPI_D4), PAD_DPI_D4_FUNC_SPI4_MI);
- gpio_set_mode(GPIO(DPI_D5), PAD_DPI_D5_FUNC_SPI4_CSB);
- gpio_set_mode(GPIO(DPI_D6), PAD_DPI_D6_FUNC_SPI4_MO);
- gpio_set_mode(GPIO(DPI_D7), PAD_DPI_D7_FUNC_SPI4_CLK);
- }
- break;
- case 5:
- if (pad_select == SPI_PAD0_MASK) {
- gpio_set_mode(GPIO(DPI_D0), PAD_DPI_D0_FUNC_SPI5_MI);
- gpio_set_mode(GPIO(DPI_D1), PAD_DPI_D1_FUNC_SPI5_CSB);
- gpio_set_mode(GPIO(DPI_D2), PAD_DPI_D2_FUNC_SPI5_MO);
- gpio_set_mode(GPIO(DPI_D3), PAD_DPI_D3_FUNC_SPI5_CLK);
- }
- break;
+ assert(bus < SPI_BUS_NUMBER);
+ const struct pad_func *ptr;
+ if (pad_select == SPI_PAD0_MASK) {
+ ptr = pad0_funcs[bus];
+ } else {
+ assert(bus == 1 && pad_select == SPI_PAD1_MASK);
+ ptr = bus1_pad1_funcs;
}
+ for (int i = 0; i < 4; i++)
+ gpio_set_mode((gpio_t){.id = ptr[i].pin_id}, ptr[i].func);
}
void mtk_spi_set_timing(struct mtk_spi_regs *regs, u32 sck_ticks, u32 cs_ticks)