soc/qualcomm/ipq40xx: Enable timer
BUG=chrome-os-partner:49249 TEST=None. Initial code not sure if it will even compile BRANCH=none Original-Commit-Id: 35c0e6046899dc1af03736ae9fa77f9eeec7f668 Original-Change-Id: I681e92fa673c1d3aee2974a7bba5074e2bfd6e02 Original-Signed-off-by: Varadarajan Narayanan <varada@codeaurora.org> Original-Reviewed-on: https://chromium-review.googlesource.com/333297 Original-Commit-Ready: David Hendricks <dhendrix@chromium.org> Original-Reviewed-by: David Hendricks <dhendrix@chromium.org> squashed: soc/qualcomm/ipq40xx: Enable UART on ipq40xx - BLSP/UART Clock configuration - GPIO Configuration BUG=chrome-os-partner:49249 TEST=None. Initial code not sure if it will even compile BRANCH=none Original-Commit-Id: 7bba1fc7f50e7aeb4e7b37f164e85771e53f47e6 Original-Change-Id: I474a0e97b24ac9b3f2cba599cd709b6801b08f91 Original-Signed-off-by: Varadarajan Narayanan <varada@codeaurora.org> Original-Reviewed-on: https://chromium-review.googlesource.com/333300 Original-Commit-Ready: David Hendricks <dhendrix@chromium.org> Original-Reviewed-by: David Hendricks <dhendrix@chromium.org> Change-Id: I5e31d036ee7ddcf72ed9739cef1f7f7d0ca6c427 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Reviewed-on: https://review.coreboot.org/14667 Tested-by: build bot (Jenkins) Reviewed-by: Martin Roth <martinroth@google.com>
This commit is contained in:
Varadarajan Narayanan
committed by
Patrick Georgi
Patrick Georgi
parent
5df833179d
commit
9541ba828f
@@ -31,104 +31,43 @@
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#include <soc/clock.h>
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#include <types.h>
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/**
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* uart_pll_vote_clk_enable - enables PLL8
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*/
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void uart_pll_vote_clk_enable(unsigned int clk_dummy)
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{
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setbits_le32(BB_PLL_ENA_SC0_REG, BIT(8));
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if (!clk_dummy)
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while ((read32(PLL_LOCK_DET_STATUS_REG) & BIT(8)) == 0)
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;
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}
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/**
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* uart_set_rate_mnd - configures divider M and D values
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*
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* Sets the M, D parameters of the divider to generate the GSBI UART
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* apps clock.
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*/
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static void uart_set_rate_mnd(unsigned int gsbi_port, unsigned int m,
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unsigned int n)
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{
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/* Assert MND reset. */
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setbits_le32(GSBIn_UART_APPS_NS_REG(gsbi_port), BIT(7));
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/* Program M and D values. */
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write32(GSBIn_UART_APPS_MD_REG(gsbi_port), MD16(m, n));
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/* Deassert MND reset. */
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clrbits_le32(GSBIn_UART_APPS_NS_REG(gsbi_port), BIT(7));
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}
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/**
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* uart_branch_clk_enable_reg - enables branch clock
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*
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* Enables branch clock for GSBI UART port.
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*/
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static void uart_branch_clk_enable_reg(unsigned int gsbi_port)
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{
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setbits_le32(GSBIn_UART_APPS_NS_REG(gsbi_port), BIT(9));
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}
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/**
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* uart_local_clock_enable - configures N value and enables root clocks
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*
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* Sets the N parameter of the divider and enables root clock and
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* branch clocks for GSBI UART port.
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*/
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static void uart_local_clock_enable(unsigned int gsbi_port, unsigned int n,
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unsigned int m)
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{
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unsigned int reg_val, uart_ns_val;
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void *const reg = (void *)GSBIn_UART_APPS_NS_REG(gsbi_port);
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/*
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* Program the NS register, if applicable. NS registers are not
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* set in the set_rate path because power can be saved by deferring
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* the selection of a clocked source until the clock is enabled.
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*/
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reg_val = read32(reg); // REG(0x29D4+(0x20*((n)-1)))
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reg_val &= ~(Uart_clk_ns_mask);
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uart_ns_val = NS(BIT_POS_31, BIT_POS_16, n, m, 5, 4, 3, 1, 2, 0, 3);
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reg_val |= (uart_ns_val & Uart_clk_ns_mask);
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write32(reg, reg_val);
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/* enable MNCNTR_EN */
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reg_val = read32(reg);
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reg_val |= BIT(8);
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write32(reg, reg_val);
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/* set source to PLL8 running @384MHz */
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reg_val = read32(reg);
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reg_val |= 0x3;
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write32(reg, reg_val);
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/* Enable root. */
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reg_val |= Uart_en_mask;
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write32(reg, reg_val);
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uart_branch_clk_enable_reg(gsbi_port);
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}
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/**
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* uart_set_gsbi_clk - enables HCLK for UART GSBI port
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*/
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static void uart_set_gsbi_clk(unsigned int gsbi_port)
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{
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setbits_le32(GSBIn_HCLK_CTL_REG(gsbi_port), BIT(4));
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}
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#define CLOCK_UPDATE_DELAY 1000
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/**
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* uart_clock_config - configures UART clocks
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*
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* Configures GSBI UART dividers, enable root and branch clocks.
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*/
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void uart_clock_config(unsigned int gsbi_port, unsigned int m,
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unsigned int n, unsigned int d, unsigned int clk_dummy)
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void uart_clock_config(unsigned int blsp_uart, unsigned int m,
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unsigned int n, unsigned int d)
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{
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uart_set_rate_mnd(gsbi_port, m, d);
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uart_pll_vote_clk_enable(clk_dummy);
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uart_local_clock_enable(gsbi_port, n, m);
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uart_set_gsbi_clk(gsbi_port);
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int i;
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/* Setup M, N & D */
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write32(GCC_BLSP1_UART_APPS_M(blsp_uart), m);
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write32(GCC_BLSP1_UART_APPS_N(blsp_uart), ~(n - m));
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write32(GCC_BLSP1_UART_APPS_D(blsp_uart), ~d);
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write32(GCC_BLSP1_UART_MISC(blsp_uart), 0);
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/* Setup source sel etc. */
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write32(GCC_BLSP1_UART_APPS_CFG_RCGR(blsp_uart),
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0 | /* 0: 4 SRC_DIV = Bypass */
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0 << 8 | /* 8:10 SRC_SEL = CxO */
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2 << 12); /* 13:12 Mode = Dual Edge */
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/* Trigger update */
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setbits_le32(GCC_BLSP1_UART_APPS_CMD_RCGR(blsp_uart), 1);
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/* Wait for update */
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for (i = 0; i < CLOCK_UPDATE_DELAY; i++) {
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if (!(read32(GCC_BLSP1_UART_APPS_CMD_RCGR(blsp_uart)) & 1)) {
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/* Updated */
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break;
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}
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udelay(1);
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}
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setbits_le32(GCC_CLK_BRANCH_ENA, BLSP1_AHB | BLSP1_SLEEP);
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}
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/**
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@@ -34,7 +34,7 @@
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#include <soc/iomap.h>
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/* UART clock @ 7.3728 MHz */
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#define UART_DM_CLK_RX_TX_BIT_RATE 0xCC
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#define UART_DM_CLK_RX_TX_BIT_RATE 0xFF
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/* UART specific definitions */
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@@ -205,8 +205,8 @@
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/* Uart specific clock settings */
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void uart_pll_vote_clk_enable(unsigned int);
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void uart_clock_config(unsigned int gsbi_port, unsigned int m, unsigned int n,
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unsigned int d, unsigned int clk_dummy);
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void uart_clock_config(unsigned int blsp_uart, unsigned int m, unsigned int n,
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unsigned int d);
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void nand_clock_config(void);
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void usb_clock_config(void);
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int audio_clock_config(unsigned frequency);
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@@ -69,16 +69,22 @@
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#define GPIO_MAX_NUM 68
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/* GPIO TLMM: Mask */
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#define GPIO_CFG_PULL_MASK 0x3
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#define GPIO_CFG_FUNC_MASK 0xF
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#define GPIO_CFG_DRV_MASK 0x7
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#define GPIO_CFG_OE_MASK 0x1
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#define GPIO_CFG_PULL_MASK 0x3
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#define GPIO_CFG_FUNC_MASK 0xF
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#define GPIO_CFG_DRV_MASK 0x7
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#define GPIO_CFG_OE_MASK 0x1
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#define GPIO_CFG_VM_MASK 0x1
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#define GPIO_CFG_OD_EN_MASK 0x1
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#define GPIO_CFG_PU_REMASKFT 0x3
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/* GPIO TLMM: Shift */
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#define GPIO_CFG_PULL_SHIFT 0
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#define GPIO_CFG_FUNC_SHIFT 2
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#define GPIO_CFG_DRV_SHIFT 6
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#define GPIO_CFG_OE_SHIFT 9
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#define GPIO_CFG_PULL_SHIFT 0
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#define GPIO_CFG_FUNC_SHIFT 2
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#define GPIO_CFG_DRV_SHIFT 6
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#define GPIO_CFG_OE_SHIFT 9
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#define GPIO_CFG_VM_SHIFT 11
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#define GPIO_CFG_OD_EN_SHIFT 12
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#define GPIO_CFG_PU_RES_SHIFT 13
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/* GPIO IO: Mask */
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#define GPIO_IO_IN_MASK 0x1
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@@ -49,37 +49,36 @@
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#define clrsetbits_le32_i(addr, clear, set) \
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clrsetbits_le32(((void *)(addr)), (clear), (set))
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#define MSM_CLK_CTL_BASE ((void *)0x00900000)
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#define GCC_CLK_CTL_REG ((void *)0x01800000u)
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#define MSM_CLK_CTL_BASE GCC_CLK_CTL_REG
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#define GCC_CLK_BRANCH_ENA (GCC_CLK_CTL_REG + 0x6000)
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#define IMEM_AXI (1 << 17)
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#define SYS_NOC_APSS_AHB (1 << 16)
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#define BIMC_AXI_M0 (1 << 15)
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#define APSS_AHB (1 << 14)
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#define APSS_AXI (1 << 13)
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#define MPM_AHB (1 << 12)
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#define GMEM_SYS_NOC_AXI (1 << 11)
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#define BLSP1_AHB (1 << 10)
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#define BLSP1_SLEEP (1 << 9)
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#define PRNG_AHB (1 << 8)
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#define BOOT_ROM_AHB (1 << 7)
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#define MSG_RAM_AHB (1 << 6)
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#define TLMM_AHB (1 << 5)
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#define TLMM (1 << 4)
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#define SPMI_PCNOC_AHB (1 << 3)
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#define CRYPTO (1 << 2)
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#define CRYPTO_AXI (1 << 1)
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#define CRYPTO_AHB (1 << 0)
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#define MSM_TMR_BASE ((void *)0x0200A000)
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#define MSM_GPT_BASE (MSM_TMR_BASE + 0x04)
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#define MSM_DGT_BASE (MSM_TMR_BASE + 0x24)
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#define GCNT_GLOBAL_CTRL_BASE ((void *)0x004a0000u)
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#define GCNT_CNTCR (GCNT_GLOBAL_CTRL_BASE + 0x1000)
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#define GCNT_GLB_CNTCV_LO (GCNT_GLOBAL_CTRL_BASE + 0x1008)
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#define GCNT_GLB_CNTCV_HI (GCNT_GLOBAL_CTRL_BASE + 0x100c)
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#define GCNT_CNTCV_LO (GCNT_GLOBAL_CTRL_BASE + 0x2000)
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#define GCNT_CNTCV_HI (GCNT_GLOBAL_CTRL_BASE + 0x2004)
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#define GPT_REG(off) (MSM_GPT_BASE + (off))
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#define DGT_REG(off) (MSM_DGT_BASE + (off))
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#define APCS_WDT0_EN (MSM_TMR_BASE + 0x0040)
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#define APCS_WDT0_RST (MSM_TMR_BASE + 0x0038)
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#define APCS_WDT0_BARK_TIME (MSM_TMR_BASE + 0x004C)
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#define APCS_WDT0_BITE_TIME (MSM_TMR_BASE + 0x005C)
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#define APCS_WDT0_CPU0_WDOG_EXPIRED_ENABLE (MSM_CLK_CTL_BASE + 0x3820)
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#define GPT_MATCH_VAL GPT_REG(0x0000)
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#define GPT_COUNT_VAL GPT_REG(0x0004)
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#define GPT_ENABLE GPT_REG(0x0008)
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#define GPT_CLEAR GPT_REG(0x000C)
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#define GPT1_MATCH_VAL GPT_REG(0x00010)
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#define GPT1_COUNT_VAL GPT_REG(0x00014)
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#define GPT1_ENABLE GPT_REG(0x00018)
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#define GPT1_CLEAR GPT_REG(0x0001C)
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#define DGT_MATCH_VAL DGT_REG(0x0000)
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#define DGT_COUNT_VAL DGT_REG(0x0004)
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#define DGT_ENABLE DGT_REG(0x0008)
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#define DGT_CLEAR DGT_REG(0x000C)
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#define DGT_CLK_CTL DGT_REG(0x0010)
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#define GCNT_PSHOLD ((void *)0x004AB000u)
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/* RPM interface constants */
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#define RPM_INT ((void *)0x63020)
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@@ -88,8 +87,8 @@
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#define RPM_SIGNAL_ENTRY ((void *)0x47C24)
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#define RPM_FW_MAGIC_NUM 0x4D505242
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#define TLMM_BASE_ADDR ((void *)0x00800000)
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#define GPIO_CONFIG_ADDR(x) (TLMM_BASE_ADDR + 0x1000 + (x)*0x10)
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#define TLMM_BASE_ADDR ((void *)0x01000000)
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#define GPIO_CONFIG_ADDR(x) (TLMM_BASE_ADDR + 0x1000 * (x))
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#define GPIO_IN_OUT_ADDR(x) (GPIO_CONFIG_ADDR(x) + 4)
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/* Yes, this is not a typo... host2 is actually mapped before host1. */
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@@ -100,16 +99,23 @@
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#define USB_HOST1_DWC3_BASE 0x1100C100
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#define USB_HOST1_PHY_BASE 0x110F8800
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#define GSBI_4 4
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#define UART1_DM_BASE 0x12450000
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#define UART_GSBI1_BASE 0x12440000
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#define UART2_DM_BASE 0x12490000
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#define UART_GSBI2_BASE 0x12480000
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#define UART4_DM_BASE 0x16340000
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#define UART_GSBI4_BASE 0x16300000
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#define UART1_DM_BASE ((void *)0x078af000)
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#define UART2_DM_BASE ((void *)0x078b0000)
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#define UART2_DM_BASE 0x12490000
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#define UART_GSBI2_BASE 0x12480000
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enum {
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BLSP1_UART1,
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BLSP1_UART2,
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};
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#define GCC_BLSP1_UART_BCR_BASE (GCC_CLK_CTL_REG + 0x2038)
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#define GCC_BLSP1_UART_BCR(x) (GCC_BLSP1_UART_BCR_BASE + (x) * 0xff0)
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#define GCC_BLSP1_UART_APPS_CBCR(x) (GCC_BLSP1_UART_BCR(x) + 4)
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#define GCC_BLSP1_UART_APPS_CMD_RCGR(x) (GCC_BLSP1_UART_APPS_CBCR(x) + 8)
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#define GCC_BLSP1_UART_APPS_CFG_RCGR(x) (GCC_BLSP1_UART_APPS_CMD_RCGR(x) + 4)
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#define GCC_BLSP1_UART_APPS_M(x) (GCC_BLSP1_UART_APPS_CFG_RCGR(x) + 4)
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#define GCC_BLSP1_UART_APPS_N(x) (GCC_BLSP1_UART_APPS_M(x) + 4)
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#define GCC_BLSP1_UART_APPS_D(x) (GCC_BLSP1_UART_APPS_N(x) + 4)
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#define GCC_BLSP1_UART_MISC(x) (GCC_BLSP1_UART_APPS_D(x) + 4)
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#define GSBI1_BASE ((void *)0x12440000)
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#define GSBI2_BASE ((void *)0x12480000)
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@@ -30,7 +30,7 @@
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#ifndef __UART_DM_H__
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#define __UART_DM_H__
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#define PERIPH_BLK_BLSP 0
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#define PERIPH_BLK_BLSP 1
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#define MSM_BOOT_UART_DM_EXTR_BITS(value, start_pos, end_pos) \
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((value << (32 - end_pos)) >> (32 - (end_pos - start_pos)))
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@@ -32,20 +32,10 @@
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#include <soc/ipq_timer.h>
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#include <timer.h>
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/*
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* DGT runs at 25 MHz / 4, or 6.25 ticks per microsecond
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*/
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#define DGT_MHZ_NUM 25
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#define DGT_MHZ_DEN 4
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#define GCNT_FREQ_MHZ 48
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#define TIMER_TICKS(us) ((DGT_MHZ_NUM*(us) + (DGT_MHZ_DEN - 1)) / DGT_MHZ_DEN)
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#define TIMER_USECS(ticks) (DGT_MHZ_DEN*(ticks) / DGT_MHZ_NUM)
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/* Clock divider values for the timer. */
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#define DGT_CLK_DIV_1 0
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#define DGT_CLK_DIV_2 1
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#define DGT_CLK_DIV_3 2
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#define DGT_CLK_DIV_4 3
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#define TIMER_TICKS(us) (GCNT_FREQ_MHZ * (us))
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#define TIMER_USECS(ticks) ((ticks) / GCNT_FREQ_MHZ)
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/**
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* init_timer - initialize timer
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@@ -53,18 +43,26 @@
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void init_timer(void)
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{
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/* disable timer */
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writel_i(0, DGT_ENABLE);
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write32(GCNT_CNTCR, 0);
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/* DGT uses TCXO source which is 25MHz.
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* The timer should run at 1/4th the frequency of TCXO
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* according to clock plan.
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* Set clock divider to 4.
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*/
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writel_i(DGT_CLK_DIV_4, DGT_CLK_CTL);
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/* Reset the counters to zero */
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write32(GCNT_GLB_CNTCV_LO, 0);
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write32(GCNT_GLB_CNTCV_HI, 0);
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/* Enable timer */
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writel_i(0, DGT_CLEAR);
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writel_i(DGT_ENABLE_EN, DGT_ENABLE);
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write32(GCNT_CNTCR, 1);
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}
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static inline uint64_t read_gcnt_val(void)
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{
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uint32_t hi, lo;
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do {
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hi = read32(GCNT_CNTCV_HI);
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lo = read32(GCNT_CNTCV_LO);
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} while (hi != read32(GCNT_CNTCV_HI));
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return ((((uint64_t)hi) << 32) | lo);
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}
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/**
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@@ -73,26 +71,15 @@ void init_timer(void)
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*/
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void udelay(unsigned usec)
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{
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uint32_t now;
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uint32_t last;
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uint32_t ticks;
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uint32_t curr_ticks = 0;
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uint64_t expire;
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/* Calculate number of ticks required. */
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ticks = TIMER_TICKS(usec);
|
||||
expire = read_gcnt_val() + TIMER_TICKS(usec);
|
||||
|
||||
/* Obtain the current timer value. */
|
||||
last = readl_i(DGT_COUNT_VAL);
|
||||
|
||||
/* Loop until the right number of ticks. */
|
||||
while (curr_ticks < ticks) {
|
||||
now = readl_i(DGT_COUNT_VAL);
|
||||
curr_ticks += now - last;
|
||||
last = now;
|
||||
}
|
||||
while (expire >= read_gcnt_val())
|
||||
;
|
||||
}
|
||||
|
||||
void timer_monotonic_get(struct mono_time *mt)
|
||||
{
|
||||
mono_time_set_usecs(mt, TIMER_USECS(readl_i(DGT_COUNT_VAL)));
|
||||
mono_time_set_usecs(mt, TIMER_USECS(read_gcnt_val()));
|
||||
}
|
||||
|
||||
@@ -44,9 +44,8 @@
|
||||
|
||||
typedef struct {
|
||||
void *uart_dm_base;
|
||||
void *uart_gsbi_base;
|
||||
unsigned uart_gsbi;
|
||||
uart_clk_mnd_t mnd_value;
|
||||
unsigned blsp_uart;
|
||||
gpio_func_data_t dbg_uart_gpio[NO_OF_DBG_UART_GPIOS];
|
||||
} uart_params_t;
|
||||
|
||||
@@ -55,28 +54,25 @@ typedef struct {
|
||||
* board/qcom/ipq40xx_cdp/ipq40xx_board_param.h
|
||||
*/
|
||||
static const uart_params_t uart_board_param = {
|
||||
.uart_dm_base = (void *)UART4_DM_BASE,
|
||||
.uart_gsbi_base = (void *)UART_GSBI4_BASE,
|
||||
.uart_gsbi = GSBI_4,
|
||||
.mnd_value = { 12, 625, 313 },
|
||||
.dbg_uart_gpio = {
|
||||
{
|
||||
.gpio = 10,
|
||||
.func = 1,
|
||||
.dir = GPIO_OUTPUT,
|
||||
.pull = GPIO_NO_PULL,
|
||||
.drvstr = GPIO_12MA,
|
||||
.enable = GPIO_DISABLE
|
||||
},
|
||||
{
|
||||
.gpio = 11,
|
||||
.func = 1,
|
||||
.dir = GPIO_INPUT,
|
||||
.pull = GPIO_NO_PULL,
|
||||
.drvstr = GPIO_12MA,
|
||||
.enable = GPIO_DISABLE
|
||||
},
|
||||
}
|
||||
.uart_dm_base = UART1_DM_BASE,
|
||||
.mnd_value = { 24, 625, 313 },
|
||||
.blsp_uart = BLSP1_UART1,
|
||||
.dbg_uart_gpio = {
|
||||
{
|
||||
.gpio = 60,
|
||||
.func = 2,
|
||||
.dir = GPIO_INPUT,
|
||||
.pull = GPIO_NO_PULL,
|
||||
.enable = GPIO_ENABLE
|
||||
},
|
||||
{
|
||||
.gpio = 61,
|
||||
.func = 2,
|
||||
.dir = GPIO_OUTPUT,
|
||||
.pull = GPIO_NO_PULL,
|
||||
.enable = GPIO_ENABLE
|
||||
},
|
||||
},
|
||||
};
|
||||
|
||||
/**
|
||||
@@ -115,84 +111,10 @@ static int valid_data = 0;
|
||||
/* Received data */
|
||||
static unsigned int word = 0;
|
||||
|
||||
/**
|
||||
* msm_boot_uart_dm_read - reads a word from the RX FIFO.
|
||||
* @data: location where the read data is stored
|
||||
* @count: no of valid data in the FIFO
|
||||
* @wait: indicates blocking call or not blocking call
|
||||
*
|
||||
* Reads a word from the RX FIFO. If no data is available blocks if
|
||||
* @wait is true, else returns %MSM_BOOT_UART_DM_E_RX_NOT_READY.
|
||||
*/
|
||||
#if 0 /* Not used yet */
|
||||
static unsigned int
|
||||
msm_boot_uart_dm_read(unsigned int *data, int *count, int wait)
|
||||
{
|
||||
static int total_rx_data = 0;
|
||||
static int rx_data_read = 0;
|
||||
void *base;
|
||||
uint32_t status_reg;
|
||||
|
||||
base = uart_board_param.uart_dm_base;
|
||||
|
||||
if (data == NULL)
|
||||
return MSM_BOOT_UART_DM_E_INVAL;
|
||||
|
||||
status_reg = readl(MSM_BOOT_UART_DM_MISR(base));
|
||||
|
||||
/* Check for DM_RXSTALE for RX transfer to finish */
|
||||
while (!(status_reg & MSM_BOOT_UART_DM_RXSTALE)) {
|
||||
status_reg = readl(MSM_BOOT_UART_DM_MISR(base));
|
||||
if (!wait)
|
||||
return MSM_BOOT_UART_DM_E_RX_NOT_READY;
|
||||
}
|
||||
|
||||
/* Check for Overrun error. We'll just reset Error Status */
|
||||
if (readl(MSM_BOOT_UART_DM_SR(base)) &
|
||||
MSM_BOOT_UART_DM_SR_UART_OVERRUN) {
|
||||
writel(MSM_BOOT_UART_DM_CMD_RESET_ERR_STAT,
|
||||
MSM_BOOT_UART_DM_CR(base));
|
||||
total_rx_data = rx_data_read = 0;
|
||||
msm_boot_uart_dm_init(base);
|
||||
return MSM_BOOT_UART_DM_E_RX_NOT_READY;
|
||||
}
|
||||
|
||||
/* Read UART_DM_RX_TOTAL_SNAP for actual number of bytes received */
|
||||
if (total_rx_data == 0)
|
||||
total_rx_data = readl(MSM_BOOT_UART_DM_RX_TOTAL_SNAP(base));
|
||||
|
||||
/* Data available in FIFO; read a word. */
|
||||
*data = readl(MSM_BOOT_UART_DM_RF(base, 0));
|
||||
|
||||
/* WAR for http://prism/CR/548280 */
|
||||
if (*data == 0)
|
||||
return MSM_BOOT_UART_DM_E_RX_NOT_READY;
|
||||
|
||||
/* increment the total count of chars we've read so far */
|
||||
rx_data_read += FIFO_DATA_SIZE;
|
||||
|
||||
/* actual count of valid data in word */
|
||||
*count = ((total_rx_data < rx_data_read) ?
|
||||
(FIFO_DATA_SIZE - (rx_data_read - total_rx_data)) :
|
||||
FIFO_DATA_SIZE);
|
||||
|
||||
/* If there are still data left in FIFO we'll read them before
|
||||
* initializing RX Transfer again
|
||||
*/
|
||||
if (rx_data_read < total_rx_data)
|
||||
return MSM_BOOT_UART_DM_E_SUCCESS;
|
||||
|
||||
msm_boot_uart_dm_init_rx_transfer(base);
|
||||
total_rx_data = rx_data_read = 0;
|
||||
|
||||
return MSM_BOOT_UART_DM_E_SUCCESS;
|
||||
}
|
||||
#endif
|
||||
|
||||
void uart_tx_byte(int idx, unsigned char data)
|
||||
{
|
||||
int num_of_chars = 1;
|
||||
unsigned tx_data = 0;
|
||||
void *base = uart_board_param.uart_dm_base;
|
||||
|
||||
/* Wait until transmit FIFO is empty. */
|
||||
@@ -206,7 +128,7 @@ void uart_tx_byte(int idx, unsigned char data)
|
||||
write32(MSM_BOOT_UART_DM_NO_CHARS_FOR_TX(base), num_of_chars);
|
||||
|
||||
/* And now write the character(s) */
|
||||
write32(MSM_BOOT_UART_DM_TF(base, 0), tx_data);
|
||||
write32(MSM_BOOT_UART_DM_TF(base, 0), data);
|
||||
}
|
||||
#endif /* CONFIG_SERIAL_UART */
|
||||
|
||||
@@ -230,7 +152,7 @@ static unsigned int msm_boot_uart_dm_reset(void *base)
|
||||
* msm_boot_uart_dm_init - initilaizes UART controller
|
||||
* @uart_dm_base: UART controller base address
|
||||
*/
|
||||
static unsigned int msm_boot_uart_dm_init(void *uart_dm_base)
|
||||
unsigned int msm_boot_uart_dm_init(void *uart_dm_base)
|
||||
{
|
||||
/* Configure UART mode registers MR1 and MR2 */
|
||||
/* Hardware flow control isn't supported */
|
||||
@@ -303,26 +225,21 @@ void uart_init(int idx)
|
||||
{
|
||||
/* Note int idx isn't used in this driver. */
|
||||
void *dm_base;
|
||||
void *gsbi_base;
|
||||
|
||||
dm_base = uart_board_param.uart_dm_base;
|
||||
|
||||
if (read32(MSM_BOOT_UART_DM_CSR(dm_base)) == UART_DM_CLK_RX_TX_BIT_RATE)
|
||||
return; /* UART must have been already initialized. */
|
||||
|
||||
gsbi_base = uart_board_param.uart_gsbi_base;
|
||||
ipq_configure_gpio(uart_board_param.dbg_uart_gpio,
|
||||
NO_OF_DBG_UART_GPIOS);
|
||||
|
||||
/* Configure the uart clock */
|
||||
uart_clock_config(uart_board_param.uart_gsbi,
|
||||
uart_clock_config(uart_board_param.blsp_uart,
|
||||
uart_board_param.mnd_value.m_value,
|
||||
uart_board_param.mnd_value.n_value,
|
||||
uart_board_param.mnd_value.d_value,
|
||||
0);
|
||||
uart_board_param.mnd_value.d_value);
|
||||
|
||||
write32(GSBI_CTRL_REG(gsbi_base),
|
||||
GSBI_PROTOCOL_CODE_I2C_UART << GSBI_CTRL_REG_PROTOCOL_CODE_S);
|
||||
write32(MSM_BOOT_UART_DM_CSR(dm_base), UART_DM_CLK_RX_TX_BIT_RATE);
|
||||
|
||||
/* Initialize UART_DM */
|
||||
@@ -335,13 +252,6 @@ void ipq40xx_uart_init(void)
|
||||
uart_init(0);
|
||||
}
|
||||
|
||||
#if 0 /* Not used yet */
|
||||
uint32_t uartmem_getbaseaddr(void)
|
||||
{
|
||||
return (uint32_t)uart_board_param.uart_dm_base;
|
||||
}
|
||||
#endif
|
||||
|
||||
/**
|
||||
* uart_tx_flush - transmits a string of data
|
||||
* @s: string to transmit
|
||||
@@ -355,27 +265,6 @@ void uart_tx_flush(int idx)
|
||||
;
|
||||
}
|
||||
|
||||
/**
|
||||
* uart_can_rx_byte - checks if data available for reading
|
||||
*
|
||||
* Returns 1 if data available, 0 otherwise
|
||||
*/
|
||||
#if 0 /* Not used yet */
|
||||
int uart_can_rx_byte(void)
|
||||
{
|
||||
/* Return if data is already read */
|
||||
if (valid_data)
|
||||
return 1;
|
||||
|
||||
/* Read data from the FIFO */
|
||||
if (msm_boot_uart_dm_read(&word, &valid_data, 0) !=
|
||||
MSM_BOOT_UART_DM_E_SUCCESS)
|
||||
return 0;
|
||||
|
||||
return 1;
|
||||
}
|
||||
#endif
|
||||
|
||||
#if IS_ENABLED(CONFIG_DRIVERS_UART)
|
||||
/**
|
||||
* ipq40xx_serial_getc - reads a character
|
||||
@@ -386,10 +275,6 @@ uint8_t uart_rx_byte(int idx)
|
||||
{
|
||||
uint8_t byte;
|
||||
|
||||
#if 0 /* Not used yet */
|
||||
while (!uart_can_rx_byte())
|
||||
; /* wait for incoming data */
|
||||
#endif
|
||||
byte = (uint8_t)(word & 0xff);
|
||||
word = word >> 8;
|
||||
valid_data--;
|
||||
|
||||
Reference in New Issue
Block a user