gwj / at91sam9263 · Commits

Commit 4ea29f749d564da84f624f3f0c8620c02a183d01

Authored by balrog
1 parent 1f163b14

Tosa: dummy lcd support (Dmitry Baryshkov). 

Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com>
Signed-off-by: Andrzej Zaborowski <andrew.zaborowski@intel.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5616 c046a42c-6fe2-441c-8c8c-71466251a162
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Showing 1 changed file with 84 additions and 0 deletions
hw/tosa.c
  View file @4ea29f7
... ... @@ -17,6 +17,7 @@
17 17 #include "pcmcia.h"
18 18 #include "block.h"
19 19 #include "boards.h"
  20 +#include "i2c.h"
20 21  
21 22 #define TOSA_RAM 0x04000000
22 23 #define TOSA_ROM 0x00800000
... ... @@ -39,6 +40,10 @@
39 40 #define TOSA_GPIO_CHRG_ERR_LED (TOSA_SCOOP_JC_GPIO_BASE + 2)
40 41 #define TOSA_GPIO_WLAN_LED (TOSA_SCOOP_JC_GPIO_BASE + 7)
41 42  
  43 +#define DAC_BASE 0x4e
  44 +#define DAC_CH1 0
  45 +#define DAC_CH2 1
  46 +
42 47 static void tosa_microdrive_attach(struct pxa2xx_state_s *cpu)
43 48 {
44 49 struct pcmcia_card_s *md;
... ... @@ -105,6 +110,83 @@ static void tosa_gpio_setup(struct pxa2xx_state_s *cpu,
105 110 scoop_gpio_out_set(scp1, TOSA_GPIO_WLAN_LED, outsignals[3]);
106 111 }
107 112  
  113 +static uint32_t tosa_ssp_read(void *opaque)
  114 +{
  115 + return 0;
  116 +}
  117 +
  118 +static void tosa_ssp_write(void *opaque, uint32_t value)
  119 +{
  120 + fprintf(stderr, "TG: %d %02x\n", value >> 5, value & 0x1f);
  121 +}
  122 +
  123 +struct tosa_dac_i2c {
  124 + i2c_slave i2c;
  125 + int len;
  126 + char buf[3];
  127 +};
  128 +
  129 +static int tosa_dac_send(i2c_slave *i2c, uint8_t data)
  130 +{
  131 + struct tosa_dac_i2c *s = (struct tosa_dac_i2c *)i2c;
  132 + s->buf[s->len] = data;
  133 + if (s->len ++ > 2) {
  134 +#ifdef VERBOSE
  135 + fprintf(stderr, "%s: message too long (%i bytes)\n", __FUNCTION__, s->len);
  136 +#endif
  137 + return 1;
  138 + }
  139 +
  140 + if (s->len == 2) {
  141 + fprintf(stderr, "dac: channel %d value 0x%02x\n",
  142 + s->buf[0], s->buf[1]);
  143 + }
  144 +
  145 + return 0;
  146 +}
  147 +
  148 +static void tosa_dac_event(i2c_slave *i2c, enum i2c_event event)
  149 +{
  150 + struct tosa_dac_i2c *s = (struct tosa_dac_i2c *)i2c;
  151 + s->len = 0;
  152 + switch (event) {
  153 + case I2C_START_SEND:
  154 + break;
  155 + case I2C_START_RECV:
  156 + printf("%s: recv not supported!!!\n", __FUNCTION__);
  157 + break;
  158 + case I2C_FINISH:
  159 +#ifdef VERBOSE
  160 + if (s->len < 2)
  161 + printf("%s: message too short (%i bytes)\n", __FUNCTION__, s->len);
  162 + if (s->len > 2)
  163 + printf("%s: message too long\n", __FUNCTION__);
  164 +#endif
  165 + break;
  166 + default:
  167 + break;
  168 + }
  169 +}
  170 +
  171 +int tosa_dac_recv(i2c_slave *s)
  172 +{
  173 + printf("%s: recv not supported!!!\n", __FUNCTION__);
  174 + return -1;
  175 +}
  176 +
  177 +static void tosa_tg_init(struct pxa2xx_state_s *cpu)
  178 +{
  179 + struct i2c_bus *bus = pxa2xx_i2c_bus(cpu->i2c[0]);
  180 + struct i2c_slave *dac = i2c_slave_init(bus, 0, sizeof(struct tosa_dac_i2c));
  181 + dac->send = tosa_dac_send;
  182 + dac->event = tosa_dac_event;
  183 + dac->recv = tosa_dac_recv;
  184 + i2c_set_slave_address(dac, DAC_BASE);
  185 + pxa2xx_ssp_attach(cpu->ssp[1], tosa_ssp_read,
  186 + tosa_ssp_write, cpu);
  187 +}
  188 +
  189 +
108 190 static struct arm_boot_info tosa_binfo = {
109 191 .loader_start = PXA2XX_SDRAM_BASE,
110 192 .ram_size = 0x04000000,
... ... @@ -141,6 +223,8 @@ static void tosa_init(ram_addr_t ram_size, int vga_ram_size,
141 223  
142 224 tosa_microdrive_attach(cpu);
143 225  
  226 + tosa_tg_init(cpu);
  227 +
144 228 /* Setup initial (reset) machine state */
145 229 cpu->env->regs[15] = tosa_binfo.loader_start;
146 230  
... ...